Trane RT SVX19A E4 Thermostat User Manual

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Installation  
Operation  
Maintenance  
Voyager™ II Rooftop units  
Cooling onlyTKD/TKH 155 175 200 250  
Reversible WKD/WKH 125 155 200  
Gas-FiredYKD/YKH 155 175 200 250  
R22 - R407C Refrigerant  
RT-SVX19A-E4  
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General information  
Foreword  
Warnings and cautions  
Reception  
These instructions are given as a  
guide to good practice in the  
installation, start-up, operation, and  
maintenance by the user, ofTrane  
TKD/TKH, WKD/WKH andYKD/YKH  
units.They do not contain full  
service procedures necessary for  
the continued successful operation  
of this equipment.The services of a  
qualified technician should be  
employed through the medium of a  
maintenance contract with a  
Warnings and Cautions appear at  
appropriate sections throughout  
this manual.Your personal safety  
and the proper operation of this  
machine require that you follow  
them carefully.The constructor  
assumes no liability for installations  
or servicing performed by  
On arrival, inspect the unit before  
signing the delivery note.  
In case of visible damage:The  
consignee (or the site  
representative) must specify any  
damage on the delivery note,  
legibly sign and date the delivery  
note, and the truck driver must  
countersign it.The consignee (or the  
site representative) must notify  
Trane Epinal Operations - Claims  
team and send a copy of the  
delivery note.The customer (or the  
site representative) should send a  
registered letter to the last carrier  
within 3 days of delivery.  
unqualified personnel.  
WARNING! : Indicates a potentially  
hazardous situation which, if not  
avoided, could result in death or  
serious injury.  
reputable service company. Read  
this manual thoroughly before unit  
start-up.  
CAUTION! : Indicates a potentially  
hazardous situation which, if not  
avoided, may result in minor or  
moderate injury. It may also be  
used to alert against unsafe  
TKD/TKH units are designed to  
operate in cooling mode only, with  
optional auxiliary heat (electric  
heater or hot water coil).  
Reception in France only:  
practices or for equipment or  
property-damage-only accidents.  
Concealed damage must be looked  
for at delivery and immediately  
treated as visible damage.  
WKD/WKH can operate in cooling  
mode or heating mode by reversing  
the refrigeration cycle with or  
without auxiliary heat.  
Safety recommendations  
Reception in all countries except  
France:  
To avoid death, injury, equipment or  
property damage, the following  
recommendations should be  
observed during maintenance and  
service visits:  
1. The maximum allowable  
pressures for system leak testing  
on low and high pressure side  
are given in the chapter  
YKD/YKH units are designed to  
operate In cooling mode and  
equipped with a gas fired heating  
module.  
In case of concealed damage:The  
consignee (or the site  
representative) must send a  
registered letter to the last carrier  
within 7 days of delivery, claiming  
for the described damage. A copy of  
this letter must be sent toTrane  
Epinal Operations - Claims team.  
TKD/TKH, WKD/WKH andYKD/YKH  
units are assembled, pressure  
tested, dehydrated, charged and run  
tested before shipment.  
"Installation". Always provide a  
pressure regulator.  
2. Disconnect the main power  
supply before any servicing on  
the unit.  
3. Service work on the refrigeration  
system and the electrical system  
should be carried out only by  
qualified and experienced  
personnel.  
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General information  
Warranty  
Refrigerant  
Storage  
Warranty is based on the general  
terms and conditions of the  
manufacturer.The warranty is void if  
the equipment is repaired or  
The refrigerant provided by the  
manufacturer meets all the  
Take precautions to prevent  
condensate formation inside the  
unit's electrical components and  
motors when:  
1. The unit is stored before it is  
installed; or,  
2. The unit is set on the roof curb  
and temporary auxiliary heat is  
provided in the building.  
requirements of our units. When  
using recycled or reprocessed  
refrigerant, it is advisable to ensure  
its quality is equivalent to that of a  
new refrigerant. For this, it is  
necessary to have a precise analysis  
made by a specialized laboratory. If  
this condition is not respected, the  
manufacturer warranty could be  
cancelled.  
modified without the written  
approval of the manufacturer, if the  
operating limits are exceeded or if  
the control system or the electrical  
wiring is modified. Damage due to  
misuse, lack of maintenance or  
failure to comply with the  
manufacturer's instructions or  
recommendations is not covered by  
the warranty obligation. If the user  
does not conform to the rules of  
this manual, it may entail  
Isolate all side panel service  
entrances and base pan openings  
(e.g., conduit holes, S/A and R/A  
openings, and flue openings) to  
minimize ambient air from entering  
the unit until it is ready for start-up.  
Maintenance contract  
It is strongly recommended that you  
sign a maintenance contract with  
your local Service Agency.This  
contract provides regular  
maintenance of your installation by  
a specialist in our equipment.  
Regular maintenance ensures that  
any malfunction is detected and  
corrected in good time and  
minimizes the possibility that  
serious damage will occur. Finally,  
regular maintenance ensures the  
maximum operating life of your  
equipment. We would remind you  
that failure to respect these  
installation and maintenance  
instructions may result in  
cancellation of warranty and  
liabilities by the manufacturer.  
Do not use the unit's heater as  
temporary heat without completing  
the start-up procedures detailed  
under "Unit Start-Up".  
TheTrane Company will not assume  
responsibility for equipment  
damage resulting from  
accumulation of condensate on the  
unit electrical components.  
Training  
To assist you in obtaining the best  
use of it and maintaining it in  
perfect operating condition over a  
long period of time, the  
manufacturer has at your disposal a  
refrigeration and air conditioning  
service school.The principal aim of  
this is to give operators and  
immediate cancellation of the  
warranty.  
technicians a better knowledge of  
the equipment they are using, or  
that is under their charge. Emphasis  
is particularly given to the  
importance of periodic checks on  
the unit operating parameters as  
well as on preventive maintenance,  
which reduces the cost of owning  
the unit by avoiding serious and  
costly breakdown.  
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Contents  
Foreword  
2
2
2
2
3
3
3
3
3
Warnings and Cautions  
Safety recommendations  
Reception  
Warranty  
Refrigerant  
Maintenance contract  
Storage  
Training  
Installation  
6
Reception of units  
6
Roof curb installation  
7
Dimensions/Weights/Clearances  
Installing the unit  
8
10  
12  
13  
14  
15  
17  
20  
26  
Condensate drain piping  
Gas pipework installation  
Filter installation  
Supply fan adjustment  
Component air pressure drops  
Supply fan performances  
Electrical connection  
Controls  
31  
Control wiring  
31  
33  
36  
37  
38  
38  
38  
38  
38  
39  
CO sensors  
2
Remote potentiometer  
Fire thermostat  
Clogged filter detector  
Smoke detector  
High temperature safety thermostat  
Remote fault relay  
Thermostats  
Communication Interfaces  
4
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Contents  
Unit Options  
40  
Hot water coil  
40  
41  
41  
42  
43  
Electric Heater  
Soft Starter  
0 - 25% fresh air hood  
Barometric relief  
Operation  
44  
Operation with a conventional thermostat  
Setting the economizer  
Test procedures  
44  
47  
49  
50  
51  
54  
55  
55  
56  
56  
56  
57  
Test modes  
Unit start-up  
Cooling without an Economizer  
Low Ambient Operation  
Cooling with an Economizer  
Economizer Set-Up  
ReliaTel™ Control Heating Operation  
Ignition Module  
Final installation checklist  
Maintenance  
58  
End user routine maintenance  
Service technician maintenance  
Troubleshooting  
58  
59  
60  
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Installation  
General information :The  
installation must conform to all  
local standards and regulations.  
There are two ways to handle the  
unit:  
1. Use the openings in the wooden  
frame to handle the machine  
using a fork lift, in accordance  
with applicable safety  
Reception of units  
Rooftop unit  
regulations.  
The unit is supplied on a wooden  
frame. It is recommended to check  
the machine's condition upon  
reception.  
2. Use a lifting beam correctly  
adjusted to fit the unit  
(Figure 1a).  
Unit handling  
The units are supplied on the truck  
but are not unloaded. An opening is  
provided on each corner of the unit  
base to facilitate handling.  
4 shackles and 4 slings are required.  
Use a lifting beam to prevent the  
cables pressing too hard on top of  
the unit during lifting.  
Figure 1a indicates the position of  
the center of gravity and the lifting  
recommendations.  
Important: For unit to fit on the  
roof curb the fork lift pockets must  
be removed.  
Figure 1a - Unit handling  
B
A
1 = Clevis  
2 = Base Rail  
3 = Spreader Bar  
L = Length (Center of Gravity)  
W = Width (Center of Gravity)  
Refer toTable 2 for weights and center of gravity.  
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Installation  
Table 1 - Sling lengths and maximum unit weight  
Roof curb Installation  
(TKD-WKD-YKD  
accessories)  
Maximm weight  
Unit size  
A (mm)  
B (mm)  
kg  
125  
155  
175  
400  
500  
3000  
3000  
3000  
3500  
3500  
1900  
1900  
1900  
2200  
2200  
644  
773  
Roof curbs are available as an  
accessory for "downflow" units to  
support the unit and ensure the  
water tightness between the rooftop  
and the roof.Two types of roof  
curbs are available:The standard  
version to allow the installation of  
the unit on a flat roof and the  
adjustable version for a sloped roof  
installation. (See Figure 1b for the  
maximum slope correction of  
adjustable roofcurb.)  
810  
1001  
1027  
Figure 1b - Maximum slope correction of adjustable roof curb.  
The adjustable roof curbs are  
supplied pre-assembled on a skid.  
Two types of self-adhesive seals are  
provided separately. (40 mm wide  
for the perimeter, 20 mm wide for  
the cross pieces). Make sure they  
are properly installed where  
indicated to assure an adequate  
curb to unit seal.  
Instructions for the roof curb  
assembly and installation with curb  
dimensions are provided with each  
roof curb kit.  
Figure 2 - Waterproofing  
4
3
1
2
1 = Roofcurb  
2 = Roof membrane  
3 = Seal  
4 = Rooftop  
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Installation  
Dimensions/Weights/Clearances  
Figure 3 - Minimum clearances  
Table 2 - Minimum clearances (mm)  
Minimum clearance  
UNIT  
1
2
3
4
5
YKD/YKH 155  
YKD/YKH 175  
YKD/YKH 200  
YKD/YKH 250  
TKD/TKH 155  
TKD/TKH 175  
TKD/TKH 200  
TKD/TKH 250  
WKD/WKH 125  
WKD/WKH 155  
WKD/WKH 200  
1900  
1900  
1900  
1900  
1900  
1900  
1900  
1900  
1900  
1900  
1900  
1800  
1800  
1800  
1800  
1800  
1800  
1800  
1800  
1800  
1800  
1800  
1220  
1220  
1220  
1220  
1220  
1220  
1220  
1220  
1220  
1220  
1220  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1000  
1300  
1300  
1300  
1300  
1300  
1300  
1300  
1300  
1300  
1300  
1300  
The structure accommodating the unit(s) must be designed to support the  
equipment in operation, as a minimum. Refer toTable 3a and the space  
requirement plan.  
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Installation  
Table 3a - Weigths & center of gravity (Figure 1)  
Maximum weight  
Corner Weight (1)  
Center of Gravity  
Shipping  
Net  
(kg)  
698  
735  
920  
946  
623  
660  
841  
866  
625  
642  
871  
A
B
C
D
Length (L)  
Width (W)  
(mm)  
737  
UNIT  
(kg)  
866  
(kg)  
243  
251  
324  
327  
219  
227  
297  
300  
218  
228  
291  
(kg)  
176  
188  
242  
251  
159  
172  
221  
230  
159  
162  
226  
(kg)  
118  
127  
151  
159  
103  
112  
138  
145  
105  
105  
155  
(kg)  
162  
169  
203  
208  
142  
149  
185  
206  
144  
147  
199  
(mm)  
1143  
1168  
1321  
1346  
1143  
1168  
1321  
1346  
1143  
1143  
1346  
YKD/YKH 155  
YKD/YKH 175  
YKD/YKH 200  
YKD/YKH 250  
TKD/TKH 155  
TKD/TKH 175  
TKD/TKH 200  
TKD/TKH 250  
WKD/WKH 125  
WKD/WKH 155  
WKD/WKH 200  
902  
737  
1128  
1154  
790  
838  
838  
711  
827  
711  
1050  
1075  
792  
838  
838  
711  
809  
711  
1080  
889  
1. Corner weights are given for information only. All models must be supported continuously by a curb or equivalent frame support.  
Table 3b - Weights of Options & accessories  
Motorized  
Outside Air  
Damper  
Standard Roof Adjustable Roof  
Manual Outside  
Air Damper  
UNIT  
Curb  
Curb  
220  
220  
260  
260  
Economizer  
30  
Electric heater Hot water coil  
YKD 155  
YKD 175  
YKD 200  
YKD 250  
YKH 155  
YKH 175  
YKH 200  
YKH 250  
TKD 155  
TKD 175  
TKD 200  
TKD 250  
TKH 155  
TKH 175  
TKH 200  
TKH 250  
WKD 125  
WKD 155  
WKD 200  
WKH 125  
WKH 155  
WKH 200  
93  
15  
15  
15  
15  
15  
15  
15  
15  
15  
15  
15  
15  
15  
15  
15  
15  
15  
15  
15  
15  
15  
15  
27  
27  
34  
34  
27  
27  
34  
34  
27  
27  
34  
34  
27  
27  
34  
34  
27  
27  
34  
27  
27  
34  
93  
30  
107  
107  
37  
37  
30  
30  
37  
37  
93  
93  
220  
220  
260  
260  
30  
14  
14  
18  
18  
14  
14  
18  
18  
18  
18  
18  
18  
18  
18  
85  
85  
30  
107  
107  
37  
110  
110  
37  
30  
30  
37  
37  
93  
93  
180  
220  
260  
20  
85  
85  
30  
107  
37  
110  
20  
30  
37  
Notes :  
Net weight should be added to unit weight when ordering factory installed accessories.  
To estimate shipping weight add 2.3 kg to net weight.  
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Installation  
Installing the unit  
1) Unit mounting on roof  
Fix the rooftop curb on the joint  
beam of the building's structure.  
Make the rooftop curb's sealing  
surface level using angle brackets  
adjusted by screw bolts, located  
around its perimeter. Place the  
adhesive seals on the curb's sealing  
surface (perimeter and cross  
Figure 4  
pieces). Make the rooftop leak-tight  
around the curbs before installing  
the unit, in compliance with current  
construction standards.  
Note:The unit must be installed  
perfectly level to ensure  
condensates flow from the  
condensate tray.  
The rooftop unit nests into the curb  
and is supported by it. Position the  
unit, taking care to comply with the  
indicated directions: the unit's  
discharge and intake openings must  
match those of the curb.  
1 = Frame  
2) Installing the unit on the ground  
Figure 5  
To install the unit on the ground, its  
base must be level and supported  
securely.  
For horizontal discharge units, a  
support is required such as a metal  
or concrete slab whose height must  
be determined according to the  
amount of snow cover, to prevent  
problems with condensation  
drainage and obstruction of the  
external coil. If necessary use an  
anti-vibration material between the  
rooftop unit's base and the support.  
Note: Unit installation must comply  
to local codes  
1 = Concrete slab  
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Installation  
. Installation of a section of  
flexible ducts to limit  
transmission of the unit's  
vibrations  
. Use of movable vanes or  
deflectors to reduce the sound  
level.  
Connection of duct  
network  
1) Downflow discharge units  
(TKD,WKD,YKD)  
Using the rooftop curb  
The rooftop curb must be  
insulated on the outside walls at  
the discharge and intake  
openings to prevent  
2) Horizontal discharge units  
(TKH,WKH,YKH)  
The intake and discharge ducts  
must be insulated (thermal  
insulation).  
The duct section located outside  
must be leak-tight.  
Provide a flexible connector to  
prevent transmission of the unit  
vibrations.This flexible duct  
must be installed inside the  
building.  
condensation in the ducts.  
The rims around the discharge  
and intake openings make it  
possible to attach the flanges on  
the ends of the ducts. If you are  
using rigid duct ends  
recommended on the rooftop  
curb plan, it is essential to fix  
these components before  
installing the unit.  
For the design of the duct  
network, comply with  
recommendations currently  
applicable on the market, in  
particular:  
Note: In case of use ofTKH, WKH or  
YKH units with economizer option,  
temperature and humidity sensors  
must be installed in return duct.  
Economizer linkage is factory  
mounted but the damper position  
must be adjusted on site.  
Figure 6 - Condensate Drain location  
1 = Condensate drain connection  
A =TKH/YKH 155, 175, 200, 250 - WKH 125,155, 200  
B =TKD/YKD 155, 175, 200, 250 - WKD 125,155,200  
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Installation  
Condensate drain piping  
A 42mm PVC condensate drain  
connection with P-trap is provided.  
Follow local codes and standard  
piping practices when running the  
drain line. Install a trap and be sure  
to fill with water before starting the  
unit. Pitch the line downward, away  
from the unit to avoid long, level,  
horizontal runs. Refer to Figure 7.  
Figure 7 - Condensate drain line connection  
1 = Static pressure drain pan  
2 = Panel enclosure  
3 = 42mm PVC drain  
4 = Cleanout plug  
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Installation  
CAUTION! Should the pressure at  
the unit valve gas inlet be higher  
than 0.035 bar, an expansion valve  
must be installed.  
CAUTION!The gas pipework must  
not exert any stress on the burner  
gas connection.  
Gas pipework installation  
The installation must conform to all  
standards and regulations.  
Note: Expansion valve must be  
The gas supply pipework and gas  
stop valve to be installed near the  
unit must be sized so as to assure  
the gas pressure is sufficient at the  
unit inlet when operating at full  
load.  
The pipework must be self-  
supporting and the final connection  
to the burner must be made by a  
flexible pipe. Provide a dust  
protection (filter) upstream the unit  
connection.  
adapted to the type of gas used:  
G 20 : 20 mb  
G 25 : 25 mb  
G 31 : (Propane): 37 or 50 mb  
Table 4 - Gas burner models  
Unit  
Burner size  
G350A  
YKD/H  
YKD/H  
YKD/H  
YKD/H  
155  
175  
200  
250  
G350A  
G350A  
G350A  
SeeTable 38 for burner  
performance.  
Gas leak check procedure  
1. Vent the gas line  
2. Gas supply line pressure test:  
close valve 4 and open valve 2  
Figure 8 -Typical gas supply Pipework  
3. Leak-check the gas pipe  
Look for gas pipe leaks using  
"Typol", "1000 bulles" or a similar  
product. Do not use soapy water.  
WARNING! Never use an open  
flame to check for gas leaks.  
Required gas pressure at the unit  
inlet connection are given in  
Table 37.  
Note:To operate with propane gas,  
the burner is fitted with a pressure  
limiter (supplied byTrane)  
1 = Evaporator section  
2 = Gas burner section  
3 = Condenser section  
4 = Gas supply connection  
5 = Gas supply line  
6,8 = Gas stop valve (Field supplied)  
7 = Expansion valve (Field supplied)  
9 = Filter (Field supplied)  
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Installation  
CAUTION! Do not operate unit  
without filters in place.  
Filter installation  
To gain access to filters, remove the  
supply fan access panel on  
downflow units and the filter access  
panel on the end for horizontal  
units.  
The maximum pressure drops  
allowable on filters are:  
EU2/G2: 120 Pa  
EU4/G4: 150 Pa  
Each unit ships with 40 or 50 mm  
thick filters. Number and size of  
filters is determined by size and  
configuration of the unit.  
Table 5 - Filter arrangement  
EU2/G2  
EU4/G4  
Size  
UNIT  
Qty  
Size  
Qty  
2
4
2
4
8
4
4
8
4
4
2
4
2
4
8
4
4
8
4
4
2
4
2
4
8
4
4
2
(508x508x50)  
(508x635x50)  
(508x508x50)  
(508x635x50)  
(508x635x50)  
(508x508x50)  
(508x635x50)  
(508x635x50)  
(508x508x50)  
(508x635x50)  
(508x508x50)  
(508x635x50)  
(508x508x50)  
(508x635x50)  
(508x635x50)  
(508x508x50)  
(508x635x50)  
(508x635x50)  
(508x508x50)  
(508x635x50)  
(508x508x50)  
(508x635x50)  
(508x508x50)  
(508x635x50)  
(508x635x50)  
(508x508x50)  
(508x635x50)  
(498x498x40)  
(500x625x50)  
(498x498x40)  
(500x625x50)  
(500x625x50)  
(498x498x40)  
(500x625x50)  
(500x625x50)  
(498x498x40)  
(500x625x50)  
(498x498x40)  
(500x625x50)  
(498x498x40)  
(500x625x50)  
(500x625x50)  
(498x498x40)  
(500x625x50)  
(500x625x50)  
(498x498x40)  
(500x625x50)  
(498x498x40)  
(500x625x50)  
(498x498x40)  
(500x625x50)  
(500x625x50)  
(498x498x40)  
(500x625x50)  
YKH/YKD 155  
4
2
YKH/YKD 175  
4
YKH 200  
YKD 200  
YKH 250  
YKD 250  
8
4
4
8
4
4
2
4
2
4
8
4
4
8
4
4
2
4
2
4
8
4
4
TKH/TKD 155  
TKH/TKD 175  
TKH 200  
TKD 200  
TKH 250  
TKD 250  
WKH/WKD 125  
WKH/WKD 155  
WKH 200  
WKD 200  
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Installation  
b. Add static pressure drop of the  
accessories installed on the  
unit. (Table 7,8 & 9)  
c. Add the total accessory static  
pressure drop (from step 1b) to  
the design external static  
pressure (from step 1a).The  
sum of these two values is the  
total system external static  
pressure.  
2. Using theTables 10 through 20 to  
find the external static pressure  
that most closely approximates  
total system external static  
pressure.Then locate the  
Supply fan adjustment  
Use the following procedure to  
determine the proper adjustment of  
the supply fan for a specific  
application.  
1. Determine total external static  
pressure about system and  
accessories.  
appropriate airflow rate for your  
unit.The value obtained  
represents the brake horsepower  
for the supply fan motor and the  
fan RPM.  
a. Obtain the design airflow rate  
and the design external static  
pressure drop through the  
distribution system.  
3. Adjust motor sheave according  
toTable 6.  
Table 6 - Motor sheave / Fan speed  
Fan Speed (RPM)  
Standard Drive  
6 turns  
Open  
566  
5 turns  
4 turns  
Open  
637  
3 turns  
Open  
672  
2 turns  
1 turns  
Open  
743  
UNIT  
YKD/YKH 155  
YKD/YKH 175  
YKD/YKH 200  
YKD/YKH 250  
TKD/TKH 155  
TKD/TKH 175  
TKD/TKH 200  
TKD/TKH 250  
WKD/WKH 125  
WKD/WKH 155  
WKD/WKH 200  
Open  
601  
769  
550  
619  
601  
769  
550  
619  
566  
601  
550  
Open  
708  
906  
659  
712  
708  
906  
659  
712  
667  
708  
659  
Closed  
N/A  
N/A  
N/A  
N/A  
N/A  
N/A  
N/A  
N/A  
N/A  
N/A  
N/A  
724  
815  
860  
951  
696  
743  
513  
586  
623  
588  
650  
681  
566  
637  
672  
743  
724  
815  
860  
951  
696  
743  
513  
586  
623  
588  
650  
681  
533  
600  
633  
700  
743  
566  
637  
672  
513  
586  
623  
696  
Fan Speed (RPM)  
Oversized Drive  
6 turns  
Open  
672  
5 turns  
Open  
714  
4 turns  
Open  
756  
3 turns  
Open  
798  
2 turns  
Open  
840  
1 turns  
Open  
882  
UNIT  
YKD/YKH 155  
YKD/YKH 175  
YKD/YKH 200  
YKD/YKH 250  
TKD/TKH 155  
TKD/TKH 175  
TKD/TKH 200  
TKD/TKH 250  
WKD/WKH 125  
WKD/WKH 155  
WKD/WKH 200  
Closed  
N/A  
N/A  
N/A  
N/A  
N/A  
N/A  
N/A  
N/A  
N/A  
N/A  
N/A  
791  
840  
711  
890  
939  
989  
1038  
835  
680  
742  
773  
804  
690  
722  
714  
754  
786  
818  
850  
672  
756  
798  
840  
882  
791  
840  
711  
890  
939  
989  
1038  
835  
680  
742  
773  
804  
690  
722  
769  
754  
786  
818  
850  
724  
815  
860  
906  
951  
513  
550  
619  
586  
623  
659  
696  
588  
650  
681  
712  
743  
RT-SVX19A-E4  
15  
href="
Installation  
Figure 9 -Typical fan, motor, and sheave  
assembly  
To increase airflow  
Loosen variable sheave set screw  
and turn sheave clockwise.  
To decrease airflow  
Loosen variable sheave set screw  
and turn sheave counter-clockwise.  
To increase belt tension  
Loosen the nut (next to the idler  
sheave) that secures the sheave in  
place. With a wrench, apply  
pressure clockwise on the outside  
nut (round headed one), until  
tension desired is reached. While  
holding pressure with the tension  
nut, retighten the nut next to the  
idler sheave.  
A = Fan Housing  
B =Terminal Block  
C = Fan Sheave  
D = Plastic Bushing  
E = BeltTension Adjustment Bolt  
F = Idler Pulley  
Table 6b - Belt tensioning  
Fan pulley  
Type /  
diam. (mm)  
Fan pulley  
Type /  
diam. (mm)  
Belt  
deflexion  
(mm)  
Deflexion Deflexion Belt tensionBelt tension  
TK* /YK* /  
Motor kW  
WK*  
Belt type  
/ lengh (mm)  
effort  
effort  
mini  
N
maxi  
N
mini kg  
maxi kg  
125  
155  
175  
200  
250  
125  
155  
175  
200  
250  
1,5  
1,5  
3
BK90 / 222  
BK85 / 210  
BK130 / 324  
BK160 / 400  
BK190 / 476  
BK130 / 324  
BK140 / 349  
BK140 / 349  
BK190 / 476  
BK190 / 476  
1VP44 / 105  
1VP44 / 105  
1VP44 / 105  
1VL40 / 95  
BX68 / 1727  
BX68 / 1727  
BX75 / 1905  
BX90 / 2286  
BX96 / 2438  
BX75 / 1905  
BX77 / 1955  
BX75 / 1905  
BX96 / 2438  
BX96 / 2438  
5,89  
6
2,4  
2,4  
2,4  
2,4  
2,4  
2,4  
2,4  
2,4  
2,4  
2,4  
2,9  
2,9  
2,9  
2,9  
2,9  
2,9  
2,9  
2,9  
2,9  
2,9  
400  
400  
400  
400  
400  
400  
400  
400  
400  
400  
500  
500  
500  
500  
500  
500  
500  
500  
500  
500  
6,05  
6,96  
6,91  
5,85  
6,17  
5,45  
6,87  
6,32  
3
4,6  
3
1VP50 / 121  
1VP44 / 105  
1VP44 / 105  
1VP56 / 136  
1VP56 / 136  
1VP56 / 136  
3
4,6  
4,6  
4,6  
16  
RT-SVX19A-E4  
href="
Installation  
Component air pressure drops  
Table 7 -YKD/YKH Pressure drop through accessories  
Filter  
Filter  
Economizer Economizer  
100%  
outside air  
100%  
return air  
Airflow  
EU2/G2  
EU4/G4  
6800  
7650  
8500  
9350  
10200  
7870  
13  
16  
19  
22  
26  
17  
21  
25  
30  
35  
12  
15  
19  
23  
27  
11  
14  
17  
20  
23  
18  
24  
29  
36  
43  
17  
21  
26  
31  
36  
27  
30  
34  
37  
40  
30  
34  
38  
43  
47  
26  
30  
33  
37  
41  
23  
26  
29  
33  
36  
32  
36  
41  
46  
51  
30  
34  
38  
43  
47  
8
10  
12  
14  
16  
10  
12  
15  
17  
20  
29  
37  
45  
55  
65  
33  
41  
51  
61  
72  
46  
58  
71  
86  
102  
52  
65  
80  
96  
114  
6
7
8
9
10  
7
8
9
11  
12  
6
8
9
11  
13  
6
YKD/YKH 155  
YKD/YKH 175  
YKD 200  
8860  
9850  
10840  
11830  
8970  
10090  
11210  
12330  
13450  
8970  
10090  
11210  
12330  
13450  
11280  
12690  
14100  
15510  
16920  
11280  
12690  
14100  
15510  
16920  
8
9
YKH 200  
11  
13  
10  
12  
14  
17  
19  
10  
12  
14  
17  
19  
YKD 250  
YKH 250  
RT-SVX19A-E4  
17  
href="
Installation  
Table 8 -TKD/TKH Pressure drop through accessories  
Filter  
Filter  
Economizer  
Economizer  
Electric  
heater  
Hot water coil  
Downflow only  
100%  
outside air  
100%  
return air  
Airflow  
EU2/G2  
EU4/G4  
6800  
7650  
13  
16  
19  
22  
26  
17  
21  
25  
30  
35  
12  
15  
19  
23  
27  
11  
14  
17  
20  
23  
18  
24  
29  
36  
43  
17  
21  
26  
31  
36  
27  
30  
34  
37  
40  
30  
34  
38  
43  
47  
26  
30  
33  
37  
41  
23  
26  
29  
33  
36  
32  
36  
41  
46  
51  
30  
34  
38  
43  
47  
8
10  
12  
14  
16  
10  
12  
15  
17  
20  
29  
37  
45  
55  
65  
33  
41  
51  
61  
72  
46  
58  
71  
86  
102  
52  
65  
80  
96  
114  
6
7
7
33  
40  
48  
56  
65  
42  
51  
61  
72  
83  
33  
40  
48  
56  
65  
-
9
TKD/TKH 155  
TKD/TKH 175  
TKD 200  
8500  
8
11  
13  
16  
10  
13  
16  
19  
23  
13  
17  
21  
25  
30  
13  
17  
21  
25  
30  
20  
25  
32  
38  
46  
19  
24  
29  
35  
42  
9350  
9
10200  
7870  
10  
7
8860  
8
9850  
9
10840  
11830  
8970  
11  
12  
6
10090  
11210  
12330  
13450  
8970  
8
9
11  
13  
6
10090  
11210  
12330  
13450  
11280  
12690  
14100  
15510  
16920  
11280  
12690  
14100  
15510  
16920  
8
-
TKH 200  
9
-
11  
13  
10  
12  
14  
17  
19  
10  
12  
14  
17  
19  
-
-
49  
59  
71  
82  
95  
-
TKD 250  
-
TKH 250  
-
-
-
18  
RT-SVX19A-E4  
href="
Installation  
Table 9 - WKD/WKH Pressure drop through accessories  
Economizer  
Economizer  
100%  
Filter  
EU2/G2  
Filter  
EU4/G4  
100%  
Electric  
heater  
Hot water coil  
Downflow only  
Airflow  
5720  
outside air  
return air  
9
21  
24  
27  
30  
33  
27  
30  
34  
37  
40  
26  
30  
33  
37  
41  
23  
26  
29  
33  
36  
6
5
6
4
37  
45  
53  
62  
72  
33  
40  
48  
56  
65  
33  
40  
48  
56  
65  
-
6430  
11  
14  
17  
20  
13  
16  
19  
22  
26  
12  
15  
19  
23  
27  
11  
14  
17  
20  
23  
7
6
WKD/WKH 125  
WKD/WKH 155  
WKD 200  
7140  
9
6
7
7850  
10  
12  
8
7
9
8560  
8
12  
7
6800  
6
7650  
10  
12  
14  
16  
29  
37  
45  
55  
65  
33  
41  
51  
61  
72  
7
9
8500  
8
11  
13  
16  
13  
17  
21  
25  
30  
13  
17  
21  
25  
30  
9350  
9
10200  
8970  
10  
6
10090  
11210  
12330  
13450  
8970  
8
9
11  
13  
6
10090  
11210  
12330  
13450  
8
-
WKH 200  
9
-
11  
13  
-
-
RT-SVX19A-E4  
19  
href="
Installation  
Supply fan performances  
Table 10 -YK 155 External static pressure  
External Static Pressure (Pa)  
125 150  
RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)  
564 587 1.07 610 1.15 633 1.23 655 1.31 677 1.39  
25  
50  
75  
100  
175  
200  
225  
250  
3
m /h  
6800  
7650  
8500  
9350  
10200  
1
560 1.14 583 1.23 605 1.31 627 1.39 648 1.48 669 1.56 690 1.65 710 1.74  
559 1.31 584 1.41 606 1.5 628 1.6 649 1.69 669 1.78 689 1.87 708 1.97 727 2.06 746 2.16  
610 1.72 633 1.83 654 1.94 675 2.04 694 2.14 713 2.24 732 2.34 750 2.45 767 2.55 785 2.65  
661 2.21 683 2.33 703 2.45 722 2.56  
External Static Pressure (Pa)  
275  
300  
325  
350  
375  
400  
425  
450  
475  
500  
3
m /h  
RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)  
699 1.47 719 1.55 739 1.63 758 1.71 777 1.79 795 1.86 813 1.94 830 2.01 847 2.09 863 2.16  
729 1.82 749 1.92 768 2.01 787 2.1 806 2.19 824 2.28 841 2.37 858 2.46 875 2.55  
764 2.25 782 2.35 800 2.45 818 2.55  
6800  
7650  
8500  
9350  
10200  
Standard drive  
Oversized drive  
20  
RT-SVX19A-E4  
href="
Installation  
Table 11 -YK 175 External static pressure  
External Static Pressure (Pa)  
125 150  
25  
50  
75  
100  
175  
200  
225  
250  
3
m /h  
RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)  
726 1.58 748 1.66 770 1.74 791 1.83 813 1.92 835 2.02  
7870  
8860  
9850  
10840  
11830  
751 1.96 772 2.05 792 2.13 811 2.22 831 2.31 850 2.4 869 2.5 888 2.6  
779 2.41 801 2.52 822 2.62 841 2.72 859 2.82 877 2.91 895 3.01 912 3.11 929 3.21 947 3.31  
852 3.19 874 3.31 893 3.42 911 3.53 928 3.64 945 3.75 961 3.85 977 3.96 993 4.07 1009 4.18  
926 4.12 946 4.25  
External Static Pressure (Pa)  
275  
300  
325  
350  
375  
400  
425  
450  
475  
500  
3
m /h  
RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)  
857 2.12 879 2.22 900 2.33 921 2.44 942 2.55 962 2.65 981 2.75 1000 2.86 1018 2.96 1036 3.06  
907 2.7 927 2.81 946 2.92 965 3.03 985 3.15  
7870  
8860  
9850  
10840  
11830  
964 3.42 981 3.53 998 3.64 1016 3.76 1033 3.88  
1024 4.29  
Standard drive  
Oversized drive  
Table 12 -YK 200 External static pressure  
External Static Pressure (Pa)  
125 150  
RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)  
530 1.5 551 1.61 572 1.74 593 1.87 614  
25  
50  
75  
100  
175  
200  
225  
250  
3
m /h  
8970  
2
10090  
11210  
12330  
13450  
529 1.71 548 1.83 567 1.94 586 2.06 604 2.18 623 2.31 641 2.45  
530 1.99 551 2.12 570 2.24 588 2.36 606 2.48 623 2.61 640 2.74 657 2.87 673 3.01  
548 2.41 573 2.58 594 2.73 613 2.87 630  
3
646 3.13 662 3.27 678 3.4 693 3.54 709 3.69  
593 3.1 617 3.29 638 3.46 656 3.61 672 3.76 688 3.9 703 4.05 718 4.19  
External Static Pressure (Pa)  
275  
300  
325  
350  
375  
400  
425  
450  
475  
500  
3
m /h  
RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)  
633 2.14 652 2.27 670 2.4 688 2.54 705 2.67 721 2.8 737 2.93 753 3.06 768 3.19 783 3.31  
660 2.6 679 2.75 697 2.91 714 3.06 731 3.21 747 3.35 763 3.5 778 3.65 793 3.8 808 3.95  
690 3.16 707 3.31 724 3.47 741 3.64 757 3.81 773 3.98 789 4.14 804 4.31  
724 3.84 739 3.99 754 4.15 770 4.31  
8970  
10090  
11210  
12330  
13450  
Standard drive  
Oversized drive  
RT-SVX19A-E4  
21  
href="
Installation  
Table 13 -YK 250 External static pressure  
External Static Pressure (Pa)  
125 150  
25  
50  
75  
100  
175  
200  
225  
250  
3
m /h  
RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)  
606 1.62 625 1.72 643 1.82  
9870  
11280  
12690  
14100  
15510  
16920  
603 1.88 620 1.97 637 2.07 653 2.17 670 2.27 686 2.37  
602 2.18 622 2.30 640 2.41 657 2.52 673 2.63 688 2.74 704 2.85 719 2.96 733 3.08  
639 2.77 660 2.92 679 3.06 696 3.19 712 3.32 727 3.44 742 3.56 756 3.68 770 3.80 784 3.92  
699 3.65 719 3.82 736 3.98 753 4.13 768 4.27 782 4.40 796 4.54 810 4.67 823 4.81 836 4.94  
758 4.70 777 4.89 794 5.06 810 5.23 824 5.39 838 5.54  
External Static Pressure (Pa)  
275  
300  
325  
350  
375  
400  
425  
450  
475  
500  
3
m /h  
RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)  
662 1.92 681 2.03 699 2.15 717 2.26 735 2.36 752 2.48 768 2.59 784 2.69 800 2.81 815 2.91  
702 2.48 718 2.59 734 2.70 750 2.82 767 2.94 783 3.08 800 3.20 815 3.33 831 3.46 846 3.59  
748 3.19 762 3.30 776 3.42 791 3.54 805 3.66 819 3.79 834 3.92 848 4.05  
797 4.05 810 4.17 823 4.30 836 4.43 849 4.55  
9870  
11280  
12690  
14100  
15510  
16920  
848 5.08  
Standard drive  
Oversized drive  
Table 14 -TK 155 External static pressure  
External Static Pressure (Pa)  
125 150  
25  
50  
75  
100  
175  
200  
225  
250  
3
m /h  
RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)  
565 0.7 599 0.77 633 0.85 665 0.93 697 1.02 728 1.1 758 1.19  
6800  
7650  
8500  
9350  
10200  
571 0.82 603 0.9 634 0.99 665 1.07 694 1.16 723 1.25 752 1.34 780 1.44  
580 0.97 613 1.07 643 1.16 672 1.25 700 1.34 727 1.43 754 1.53 781 1.63 807 1.73  
590 1.13 624 1.24 656 1.35 684 1.46 711 1.55 738 1.65 763 1.75 788 1.86 813 1.96 838 2.07  
637 1.44 670 1.57 699 1.69 727 1.81 753 1.92 777 2.02 801 2.13 825 2.24 848 2.35 871 2.46  
External Static Pressure (Pa)  
275  
300  
325  
350  
375  
400  
425  
450  
475  
500  
3
m /h  
RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)  
6800  
7650  
8500  
9350  
10200  
787 1.28 815 1.37 842 1.46 868 1.54  
808 1.53 836 1.63 862 1.74  
833 1.83 858 1.93 883 2.04  
862 2.18 885 2.29 909 2.4  
894 2.58  
Standard drive  
Oversized drive  
22  
RT-SVX19A-E4  
href="
Installation  
Table 15 -TK 175 External static pressure  
External Static Pressure (Pa)  
125 150  
25  
50  
75  
100  
175  
200  
225  
250  
3
m /h  
RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)  
593 0.95 623 1.03 651 1.11 679 1.19 706 1.28 733 1.37 761 1.47 788 1.57 815 1.68  
623 1.21 653 1.31 680 1.4 706 1.49 731 1.58 756 1.67 780 1.77 805 1.87 829 1.97 853 2.08  
687 1.64 714 1.75 739 1.85 763 1.95 786 2.05 809 2.15 831 2.25 853 2.36 875 2.47 897 2.58  
750 2.16 775 2.28 799 2.4 821 2.51 843 2.62 864 2.73 884 2.84 905 2.95 925 3.07 945 3.18  
814 2.78 837 2.92 860 3.05 881 3.17 901 3.29 921 3.41 940 3.53 959 3.65 978 3.77 996 3.89  
7870  
8860  
9850  
10840  
11830  
External Static Pressure (Pa)  
275  
300  
325  
350  
375  
400  
425  
450  
475  
500  
3
m /h  
RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)  
842 1.79 869 1.91 896 2.03 921 2.15 946 2.27 970 2.39 994 2.51 1016 2.63 1038 2.75  
877 2.19 901 2.31 925 2.43 949 2.56 973 2.69 997 2.83 1020 2.96 1043 3.1  
919 2.7 941 2.82 962 2.94 984 3.07 1006 3.2 1027 3.33  
7870  
8860  
9850  
10840  
11830  
965 3.3 985 3.43 1005 3.55 1025 3.68 1044 3.82  
1015 4.02 1033 4.15  
Standard drive  
Oversized drive  
Table 16 -TK 200 External static pressure  
External Static Pressure (Pa)  
125 150  
25  
50  
75  
100  
175  
200  
225  
250  
3
m /h  
RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)  
512 0.98 542 1.09 571 1.21 600 1.33 629 1.45 656 1.58 684 1.72  
8970  
10090  
11210  
12330  
13450  
519 1.16 547 1.28 575 1.39 601 1.51 627 1.64 653 1.77 679 1.91 704 2.05  
528 1.36 557 1.5 584 1.63 610 1.76 634 1.89 658 2.02 682 2.16 705 2.3 729 2.44  
537 1.58 568 1.74 596 1.9 622 2.05 647 2.19 670 2.33 692 2.47 714 2.62 735 2.77 757 2.92  
580 2.01 609 2.19 636 2.37 661 2.54 684 2.7 706 2.85 728 3.01 748 3.16 768 3.32 788 3.48  
External Static Pressure (Pa)  
275  
RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)  
710 1.86 735 759 2.14 783 2.27 805 2.41 827 2.55  
300  
325  
350  
375  
400  
425  
450  
475  
500  
3
m /h  
8970  
2
10090  
11210  
12330  
13450  
729 2.2 753 2.35 777 2.5 800 2.66 823 2.81  
752 2.6 774 2.75 797 2.92 819 3.08 841 3.25  
778 3.08 799 3.24 820 3.4 841 3.57  
808 3.64 828 3.81  
Standard drive  
Oversized drive  
RT-SVX19A-E4  
23  
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Installation  
Table 17 -TK 250 External static pressure  
External Static Pressure (Pa)  
125 150  
25  
50  
75  
100  
175  
200  
225  
250  
3
m /h  
RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)  
585 1.31 609 1.42 632 1.51 654 1.6 675 1.69 695 1.78  
9870  
11280  
12690  
14100  
15510  
16920  
606 1.63 633 1.77 657 1.9 679 2.02 700 2.13 720 2.24 739 2.35  
599 1.8 628 1.97 655 2.15 681 2.31 704 2.47 726 2.62 747 2.76 766 2.89 785 3.02  
631 2.2 654 2.38 679 2.57 705 2.76 729 2.96 752 3.14 774 3.32 795 3.49 814 3.65 832 3.8  
690 2.9 711 3.08 733 3.28 756 3.5 779 3.71 801 3.93 822 4.13 842 4.33  
749 3.73 768 3.92 788 4.14 809 4.36  
External Static Pressure (Pa)  
275  
300  
325  
350  
375  
400  
425  
450  
475  
500  
3
m /h  
RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)  
714 1.86 733 1.94 751 2.02 769 2.1 786 2.17 802 2.25 818 2.32 834 2.39 849 2.46 864 2.53  
757 2.45 775 2.55 793 2.65 810 2.74 827 2.84 843 2.93 859 3.02 874 3.11 889 3.19 904 3.28  
803 3.14 820 3.26 837 3.38 853 3.49 869 3.61 885 3.72 901 3.83 916 3.93 931 4.04  
850 3.95 866 4.09 883 4.23 898 4.37  
9870  
11280  
12690  
14100  
15510  
16920  
Standard drive  
Oversized drive  
Table 18 - WK 125 External static pressure  
External Static Pressure (Pa)  
125 150  
25  
50  
75  
100  
175  
200  
225  
250  
3
m /h  
RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)  
562 0.55 601 0.63 639 0.71 675 0.8 709 0.89 741 0.98  
8970  
10090  
11210  
12330  
13450  
548 0.6 584 0.68 620 0.76 655 0.84 690 0.93 723 1.03 755 1.13  
544 0.68 578 0.75 611 0.83 644 0.91 676  
1
708 1.09 739 1.19 770 1.29  
542 0.77 577 0.85 609 0.93 640 1.01 670 1.1 700 1.19 730 1.28 759 1.38 788 1.48  
541 0.85 578 0.96 612 1.05 643 1.14 671 1.23 699 1.32 727 1.41 755 1.51 782 1.61 809 1.71  
External Static Pressure (Pa)  
275  
300  
325  
350  
375  
400  
425  
450  
475  
500  
3
m /h  
RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)  
772 1.06 802 1.15 830 1.24 857 1.33 883 1.41 909 1.5 933 1.59 957 1.68  
786 1.23 815 1.32 843 1.42 871 1.52 897 1.62 922 1.72 947 1.82  
800 1.4 829 1.51 857 1.62 884 1.73 911 1.84 936 1.94 960 2.05  
816 1.59 844 1.7 872 1.82 898 1.94 925 2.06 950 2.18  
5720  
6430  
7140  
7850  
8560  
835 1.82 862 1.94 888 2.05 913 2.18 939 2.3  
Standard drive  
Oversized drive  
24  
RT-SVX19A-E4  
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Installation  
Table 19 - WK 155 External static pressure  
External Static Pressure (Pa)  
125 150  
25  
50  
75  
100  
175  
200  
225  
250  
3
m /h  
RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)  
566 0.7 599 0.77 632 0.85 664 0.93 696 1.02 727 1.11 757 1.2  
6800  
7650  
8500  
9350  
10200  
571 0.82 604 0.9 634 0.99 664 1.07 694 1.16 723 1.25 751 1.34 779 1.44  
578 0.95 612 1.05 644 1.15 673 1.25 700 1.34 727 1.43 754 1.53 780 1.63 806 1.73  
586 1.09 622 1.22 655 1.33 685 1.44 712 1.55 739 1.65 764 1.75 788 1.86 813 1.96 837 2.07  
633 1.39 667 1.53 698 1.66 726 1.78 753 1.9 778 2.02 803 2.13 826 2.24 848 2.35 871 2.47  
External Static Pressure (Pa)  
275  
300  
325  
350  
375  
400  
425  
450  
475  
500  
3
m /h  
RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)  
6800  
7650  
8500  
9350  
10200  
787 1.29 816 1.38 843 1.47  
807 1.54 834 1.64 861 1.74  
832 1.83 857 1.94 882 2.04  
861 2.18 884 2.29  
893 2.58  
Standard drive  
Oversized drive  
Table 20 - WK 200 External static pressure  
External Static Pressure (Pa)  
125 150  
25  
50  
75  
100  
175  
200  
225  
250  
3
m /h  
RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)  
521 1.01 550 1.12 579 1.24 608 1.36 636 1.49 664 1.62 691 1.76  
8970  
10090  
11210  
12330  
13450  
14570  
15690  
16810  
529 1.2 557 1.32 584 1.44 610 1.56 636 1.68 662 1.82 687 1.95 712 2.1  
540 1.42 569 1.56 595 1.69 621 1.82 645 1.95 669 2.08 692 2.22 715 2.36 738 2.51  
552 1.66 582 1.82 610 1.98 635 2.13 659 2.27 681 2.41 704 2.55 725 2.7 747 2.85 768  
3
597 2.11 625 2.3 651 2.47 675 2.64 698 2.8 720 2.95 741 3.11 761 3.26 781 3.42 801 3.58  
638 2.59 666 2.8 692 3.01 716 3.2 740 3.39 762 3.58 783 3.75 803 3.92  
677 3.1 707 3.37 735 3.61 761 3.85  
715 3.66 748 3.98  
External Static Pressure (Pa)  
275  
300  
325  
350  
375  
400  
425  
450  
475  
500  
3
m /h  
RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW) RPM (kW)  
717 1.9 742 2.04 766 2.17 789 2.31 811 2.45 833 2.58  
737 2.25 761 2.4 785 2.56 808 2.71 830 2.87  
761 2.66 784 2.82 806 2.98 828 3.15  
8970  
10090  
11210  
12330  
13450  
14570  
15690  
16810  
789 3.16 810 3.32 831 3.49  
820 3.75 840 3.91  
Standard drive  
Oversized drive  
RT-SVX19A-E4  
25  
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Installation  
Over current protection  
Electrical connection  
The branch circuit feeding the unit  
must be protected in accordance  
with national or local codes and  
max unit amps indicated inTable 21  
to 28.  
The electric panel is located in the  
unit compressor section. Remove  
the compressor access panel. The  
unit is designed to run with 400 V  
+/- 5%/50 Hz/ 3 ph.  
Power wiring  
Factory supplied Disconnect switch  
(Option)  
The unit power supply must be  
provided by 4-wire cable with cross-  
sectional areas complying with  
legislation.  
The disconnect switch is factory  
mounted. It is located on the side of  
the Electrical panel and equipped  
with fuses as standard.  
The power supply cables must be  
laid in leak-tight pipes and pass  
through the bottom of the electric  
panel.The cables must not be taut.  
Appropriate connectors must be  
provided. Flexible pipe supports are  
required to prevent noise  
transmission in the building  
structure. Ensure all the connections  
are tightened.  
Note:  
Figure 10 - Power supply  
1. earthing must be executed in  
accordance with local legislation.  
2. the machines are designed for a  
short-circuit current of 10 kA. In  
the event of a higher application,  
contact yourTrane sales office.  
TKD/TKH, WKD/WKH units:  
YKD/YKH units:  
1 = Power supply from the bottom or from the side.  
26  
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Installation  
Scroll compressors  
The direction of rotation may be  
reversed by interchanging any two  
of the line wires. It is this possible  
interchange of wiring that makes a  
phase sequence indicator necessary  
if the operator is to quickly  
Compressor electrical phasing  
Proper phasing of the electrical  
power wiring is critical for proper  
operation and reliability of the scroll  
compressor and fans.  
determine the phase rotation of the  
compressor motor.  
Proper rotation of the scroll  
compressor must be established  
before the unit is started.This is  
accomplished by confirming that  
the electrical phase sequence of the  
power supply is correct.The motor  
is internally connected for clockwise  
rotation with the inlet power supply  
phased A, B, C.  
The "ABC" indicator on the face of  
the phase indicator will glow if  
phase is ABC for terminals L1, L2,  
L3.  
CAUTION! After completion of  
wiring, check all electrical  
connections, and ensure all  
connections are tight. Replace and  
secure all electrical box covers and  
access doors before leaving unit or  
connecting power to circuit  
supplying unit.  
CAUTION! Units with Scroll  
compressors are not equipped with  
crankcase heaters.  
Table 21 - Electrical data -YKD/YKH Unit Wiring  
Electrical Characteristics Unit amps  
Standard Evaporator  
Fan Motor  
Maximum  
WARNING !  
Disconnect all power,including  
remote disconnects, and discharge  
all capacitors before servicing.  
Follow proper lockout/tagout  
procedures to ensure the power  
cannot be inadvertently energized.  
After power is removed, allow  
4 minutes for capacitors to  
Oversized Evaporator  
Fan Motor  
Maximum  
Overcurrent  
Protective  
Device (Fuse  
or Circuit  
Overcurrent  
Protective  
UNIT  
MPS  
Minimum  
Circuit  
Ampacity  
Minimum  
circuit  
Device (Fuse  
ampacity  
or Circuit  
Breaker)  
Breaker)  
discharge. Verify with an  
Without Electric heat option  
appropriate voltmeter that all  
capacitors have discharged. Failure  
to disconnect power and/or  
discharge capacitors before  
servicing could result in death or  
serious injury. For additional  
information regarding the safe  
discharge of capacitors, seeTrane  
Service Bulletin PROD-SVB06A.  
TKD/H 155  
TKD/H 175  
TKD/H 200  
TKD/H 250  
WKD/H 125  
WKD/H 155  
WKD/H 200  
YKD/H 155  
YKD/H 175  
YKD/H 200  
YKD/H 250  
400/3/50  
400/3/50  
400/3/50  
400/3/50  
400/3/50  
400/3/50  
400/3/50  
400/3/50  
400/3/50  
400/3/50  
400/3/50  
35  
50  
50  
63  
63  
40  
50  
63  
50  
50  
63  
63  
36.9  
41.9  
44.5  
-
50  
50  
63  
-
41  
44  
46.4  
31.9  
35.1  
50.4  
35.6  
42.3  
44.6  
46.4  
33.8  
37  
40  
50  
63  
50  
50  
63  
-
50.9  
37.5  
43.2  
45.1  
-
With Electric heat  
TKD/H 155  
TKD/H 175  
TKD/H 200  
TKD/H 250  
WKD/H 125  
WKD/H 155  
WKD/H 200  
400/3/50  
41  
43  
63  
63  
80  
80  
80  
80  
125  
43  
43  
63  
63  
80  
-
400/3/50  
400/3/50  
400/3/50  
400/3/50  
400/3/50  
400/3/50  
61  
61  
62  
-
68  
69.9  
73.1  
105  
80  
80  
125  
71.2  
104.5  
RT-SVX19A-E4  
27  
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Installation  
Table 22 - Electrical data -TKD/TKH Compressor motor and condenser motor  
YKD/H  
YKD/H  
175  
YKD/H  
200  
YKD/H  
250  
155  
Compressor  
Number  
2
2
2
2
Type  
Scroll  
Scroll  
Scroll  
Scroll  
Model  
9T / 5T  
15.0 / 8.5  
118 / 65.5  
10T / 6.7T  
15.1 / 11.4  
118 / 101  
9T / 9T  
14.7 / 14.7  
118 / 118  
10T / 10T  
15.3 / 15.3  
118 / 118  
Nominal Amps (1)  
Locked rotor Amps (2)  
(A)  
(A)  
Outdoor Fan  
3
Nominal Airflow  
Type  
(m /h)  
15350  
Axial  
660  
Direct  
2
19750  
Axial  
660  
Direct  
2
21000  
Axial  
710  
23500  
Axial  
710  
Diameter  
(mm)  
Drive type  
Direct  
2
Direct  
2
Number / Voltage  
Motor HP  
(kW)  
(A)  
0.25  
1.6  
0.25  
1.6  
0.56  
2.3  
0.56  
2.3  
Motor Rated Amps (1)  
Motor Locked rotor Amps (2)  
Motor RPM  
(A)  
3.8  
3.8  
5.8  
5.8  
(rpm)  
925  
925  
925  
925  
(1) At Eurovent rating conditions : Indoor return Air (27°C DB / 19°C WB) - Ambiant 35°C  
(2) per motor  
Table 23 - Electrical data -YKD/YKH Compressor motor and condenser motor  
TKD/H  
TKD/H  
175  
TKD/H  
200  
TKD/H  
250  
155  
Compressor  
Number  
2
2
2
2
Type  
Scroll  
Scroll  
Scroll  
Scroll  
Model  
9T / 5T  
15.0 / 8.5  
118 / 65.5  
10T / 6.7T  
15.1 / 11.4  
118 / 101  
9T / 9T  
14.7 / 14.7  
118 / 118  
10T / 10T  
15.3 / 15.3  
118 / 118  
Rated Amps (1)  
Locked rotor Amps (2)  
(A)  
(A)  
Outdoor Fan  
3
Nominal Airflow  
Type  
(m /h)  
(mm)  
15350  
Axial  
660  
Direct  
2
19750  
Axial  
660  
Direct  
2
21000  
Axial  
710  
23500  
Axial  
710  
Diameter  
Drive type  
Direct  
2
Direct  
2
Number  
Motor HP  
(kW)  
(A)  
0.25  
1.6  
0.25  
1.6  
0.56  
2.3  
0.56  
2.3  
Motor Rated Amps (1)  
Motor Locked rotor Amps (2)  
Motor RPM  
(A)  
3.8  
3.8  
5.8  
5.8  
(rpm)  
925  
925  
925  
925  
(1) At Eurovent rating conditions : Indoor return Air (27°C DB / 19°C WB) - Ambiant 35°C  
(2) per motor  
28  
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Installation  
Table 24 - Electrical data - WKD/WKH Compressor motor and condenser motor  
WKD/H  
WKD/H  
155  
WKD/H  
200  
125  
Compressor  
Number  
2
2
2
Type  
Scroll  
Scroll  
Scroll  
Model  
6T / 6T  
10.0 / 10.0  
74 / 74  
7.5T /7.5T  
12.1 / 12.1  
79 / 79  
10T / 10T  
17.5 / 17.5  
98 / 98  
Rated Amps (1)  
Locked rotor Amps (2)  
(A)  
(A)  
Outdoor Fan  
3
Nominal Airflow  
Type  
(m /h)  
15300  
Axial  
660  
Direct  
2
15850  
Axial  
660  
Direct  
2
23600  
Axial  
710  
Diameter  
(mm)  
Drive type  
Direct  
2
Number  
Motor HP  
(kW)  
(A)  
0.25  
1.6  
0.25  
1.6  
0.56  
2.3  
Motor Rated Amps (1)  
Motor Locked rotor Amps (2)  
Motor RPM  
(A)  
3.8  
3.8  
5.8  
(rpm)  
925  
925  
950  
(1) At Eurovent rating conditions : Indoor return Air (27°C DB / 19°C WB) - Ambiant 35°C  
(2) per motor  
Table 25 - Electrical data -TKD/TKH Supply fan motor  
YKD/H  
155  
YKD/H  
YKD/H  
YKD/H  
250  
175  
200  
Indoor Fan  
3
Nominal Airflow  
(m /h)  
8500  
150  
9850  
75  
11210  
175  
14100  
75  
Static pressure available (4)  
Maximum static pressure available (5)  
Type  
(Pa)  
(Pa)  
350  
375  
450  
375  
FC Centrifugal  
15" / 15"  
Belt  
FC Centrifugal  
15" / 15"  
Belt  
FC Centrifugal  
18" / 18"  
Belt  
FC Centrifugal  
18" / 18"  
Belt  
Diameter / Width  
(in / in)  
Drive type  
Number  
#
1
1
1
1
Motor HP (Standard/Oversized)  
Motor Rated Amps (Standard/Oversized)  
(kW)  
(A)  
2.2 / 3.0  
4.6 / 6.5  
36.4 / 57  
1450 / 2870  
3.0 / 4.6  
6.5 / 9.0  
57 / 71.9  
2870 / 2900  
3.0 / 4.6  
6.5 / 9.0  
57 / 71.9  
2870 / 2900  
4.6 / -  
9 / -  
Motor Locked rotor Amps (Standard/Oversized) (A)  
71.9 / -  
2900 / -  
Motor RPM (Standard/Oversized)  
(rpm)  
(4) At the nominal airflow with standard drive  
(5) At the nominal airflow with oversized drive when available  
RT-SVX19A-E4  
29  
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Installation  
Table 26 - Electrical data -YKD/YKH Supply fan motor  
TKD/H  
155  
TKD/H  
175  
TKD/H  
200  
TKD/H  
250  
Indoor Fan  
Nominal Airflow  
3
(m /h)  
8500  
175  
9850  
250  
11210  
200  
14100  
125  
Static pressure available (4)  
Maximum static pressure available (5)  
Type  
(Pa)  
(Pa)  
325  
400  
375  
350  
FC Centrifugal  
15" / 15"  
Belt  
FC Centrifugal  
15" / 15"  
Belt  
FC Centrifugal  
18" / 18"  
Belt  
FC Centrifugal  
18" / 18"  
Belt  
Diameter / Width  
(in / in)  
Drive type  
Number  
#
1
1
1
1
Motor HP (Standard/Oversized)  
Motor Rated Amps (Standard/Oversized)  
(kW)  
(A)  
2.2 / 3.0  
4.6 / 6.5  
36.4 / 57  
1450 / 2870  
3.0 / 4.6  
6.5 / 9.0  
57 / 71.9  
2870 / 2900  
3.0 / 4.6  
6.5 / 9.0  
57 / 71.9  
2870 / 2900  
4.6 / -  
9 / -  
Motor Locked rotor Amps (Standard/Oversized) (A)  
71.9 / -  
2900 / -  
Motor RPM (Standard/Oversized)  
(rpm)  
(4) At the nominal airflow with standard drive  
(5) At the nominal airflow with oversized drive when available  
Table 27 - Electrical data - WKD/WKH Supply fan motor  
WKD/H  
WKD/H  
155  
WKD/H  
200  
125  
Indoor Fan  
3
Nominal Airflow  
(m /h)  
7140  
200  
8500  
175  
11210  
200  
Static pressure available (4)  
Maximum static pressure available (5)  
Type  
(Pa)  
(Pa)  
425  
325  
350  
FC Centrifugal  
15" / 15"  
Belt  
FC Centrifugal  
15" / 15"  
Belt  
FC Centrifugal  
18" / 18"  
Belt  
Diameter / Width  
(in / in)  
Drive type  
Number  
#
1
1
1
Motor HP (Standard/Oversized)  
Motor Rated Amps (Standard/Oversized)  
Motor Locked rotor Amps (Standard/Oversized)  
Motor RPM (Standard/Oversized)  
(kW)  
(A)  
2.2 / 3.0  
4.6 / 6.5  
36.4 / 57  
1450 / 2870  
2.2 / 3.0  
4.6 / 6.5  
36.4 / 57  
1450 / 2870  
3.0 / 4.6  
6.5 / 9.0  
57 / 71.9  
2870 / 2900  
(A)  
(rpm)  
(4) At the nominal airflow with standard drive  
(5) At the nominal airflow with oversized drive when available  
Table 28 - Electrical data - Combustion Blower Motorr  
YKD/H  
YKD/H  
175  
YKD/H  
200  
YKD/H  
250  
155  
Gas burner  
Heating Models  
G350  
G350  
G350  
G350  
Heating Input (G20)  
Heating Output  
(kW)  
(kW)  
(%)  
77  
77  
77  
77  
69.3  
69.3  
69.3  
69.3  
Steady State Efficiency  
No. Burners  
90  
90  
90  
90  
1
2
1
2
1
2
1
2
No. Stages  
Gas Connection Pipe Size  
3/4" NPT  
3/4" NPT  
3/4" NPT  
3/4" NPT  
30  
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Controls  
TraneTHS01,THS02,THP01 and  
THP02Thermostats are directly  
connected to RTRM board  
(J7 connector).TRANETHS02 and  
THP03 thermostats are directly  
connected to RTRM board  
(J6 connector).  
Control wiring  
The control circuit is 24 V AC. Unit  
includes a 400/24 V transformer.  
WARNING!The unit disconnect  
switch must be opened and locked  
open. Risk of injury and  
electrocution.  
Install the electrical link between the  
thermostat (thermostat terminal  
strip) and the unit (J6 or J7  
CAUTION!The unit 24 V transformer  
must not be used to power  
connector) in compliance with the  
interconnection diagram.The low  
voltage wiring must not be laid in  
the same pipes as the power cables.  
accessories mounted on site, other  
than those proposed byTrane.  
Unit controlled by thermostat  
Figure 11 -Thermostat wiring  
The sizes and lengths of the  
thermostat connection wires are  
given inTable 29.The total  
resistance of these control cables  
must not exceed 5 ohms. If the  
resistance exceeds this value the  
thermostat may not operate with  
the same precision.  
RTRM  
3J6  
7
8
7
8
7
8
7
8
THP03  
SR6  
9
9
1
2
S2  
S1  
9
9
10  
11  
12  
14  
10  
11  
12  
14  
10  
10  
11  
12  
14  
11  
12  
14  
Table 29 - Zone sensor wire size and  
maximum length  
1
RTRM  
3J6  
SR6  
1
2
1
2
1
2
1
2
1
2
3
3
3
4
5
3
4
5
Maximum length  
4
5
4
5
THS03  
1
6
7
6
7
Zone sensor wire size  
6
7
6
7
8
8
8
8
Wire  
size  
(mm²)  
Maximum  
wire lengh  
(m)  
9
9
9
9
10  
10  
11  
12  
14  
10  
10  
11  
12  
14  
(WH)  
11  
12  
14  
(GN)  
(RD)  
(BK)  
THA01  
THS/THP 03  
0.33  
0.5  
0.75  
1.3  
45  
76  
115  
185  
300  
10  
RTRM  
2
3J7  
0
0
Conventionnal  
thermostat  
THS/THP 01-02  
0.33  
0.5  
0.75  
1.3  
W1  
G
W1  
G
15  
THS02  
4239070  
23  
Y1  
Y2  
R
37  
THP02  
4240530  
Y1  
Y2  
R
2
60  
24V  
24V(C)  
COM  
RTRM  
3J7  
W1  
W2  
G
W1  
W2  
G
THS01  
4239060  
Y1  
Y2  
R
Y1  
Y2  
R
THP01  
4240520  
24V  
COM  
24V(C)  
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Controls  
Unit controlled by BAS  
Unit controlled byTracker™  
supervisor  
Each unit must be equipped with a  
TCI-R board. A communication bus  
(twisted shielded pair) must link  
eachTCI-R to theTrane RoofTop  
Manager (RTM) or to the  
The units must also be equipped  
with theTCI-R communication  
board. One remote sensor is  
required on each unit for a constant  
flow volume. In the case of a  
variable flow installation  
(VariTrac™) these sensors must not  
be installed. A twisted shielded pair  
must be used for the  
communication link.The main  
functions of theTracker™ supervisor  
are control of setpoints, timetable  
management (Programming) and  
display of faults. For more details  
refer to the supervisor  
communication gateway (in the  
case of an external BAS). Connect  
one temperature sensor to each  
®
unit. LonTalk communication  
interface LTCl-R board allows ICS  
communication between a  
ReliaTel™ unit and LonTalk  
®
communication applications.  
documentation.  
32  
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Controls  
CO sensors  
2
Wall-mounted and duct-mounted  
CO sensors  
2
Table 30 - Specifications  
WaII-mounted  
Duct-mounted  
Measuring range CO  
0-200 ppm  
2
<+/- [30 ppm CO  
+ 2%  
of reading]  
(included  
repeatability and  
caiibration  
2
<+/- [40 ppm CO  
3%  
of reading]  
(included repeatability  
and calibration  
+
2
Accuracy at 25°C  
Non-linearity  
uncertainty)  
uncertainty)  
<1.0% full scale  
Ternperature dependence  
of output  
0.3% full scale/°C  
<5.0% fulI scale /  
5 years  
Long-term stability  
Recomrnended  
calibration interval  
5 years  
Response time  
1 minute (0-63%)  
15-35°C  
Operating temperature  
Storage temperature  
- 5-45°C  
-20-70°C  
0-85% relative  
humidity  
Humidity range  
Airflow range  
0-10 m/s)  
Output signals (jumper  
selectable)  
0-10Vdc  
Resolution of anaIog  
outputs  
10 ppm CO2  
Recomrnended external  
load  
Current output:  
max 500  
Voltage output:  
min. 1000  
Power supply  
Nominal 24Vac  
<5 VA  
Power consumption  
Warm-up time  
<15 minutes  
108 x 80 x 36  
Dimensions (mm)  
80 x 80 x 200  
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Controls  
Power supply requirements  
Wiring the duct-mounted CO  
sensor  
1. Connect the DCV signal lwire to  
the connector DCV of the ECA  
2. Connect the power according to  
the guidelines in Power supply  
requirements.  
2
CAUTION! Make sure that you  
connect the power wire only to the  
24V terminal. Connecting the power  
wire to the output terminal may  
result in equipment damage.  
The CO sensor is designed to  
2
To connect the wall mounted CO  
sensor, Refer to the wiring diagram  
provided in the unit.  
operate with a nominal 24 Vac  
supply.The power supply should  
maintain the voltage between 20 to  
26 Vac.  
2
Mounting the wall-mounted sensor  
1. Select a proper location in the  
Table 31 - CO sensor wire size  
2
room to mount the CO sensor.  
2
Cross  
Maximum wire  
section  
Iength  
Look for an interior wall with  
good air circulation,  
approximately 1.4 m from the  
floor.  
(mm2)  
(mn)  
0.25  
50  
0.5  
1
100  
200  
2. Remove the back plate from the  
sensor and thread the power  
wires and output signal wire  
through the hole in the back  
plate.  
Wiring the wall-mounted CO  
sensor  
2
For surface wiring, make cut-  
outs with pliers to the thinner  
section of the upper or lower  
edge of the back plate and to  
thread the wires through.  
DVC setpoint potentiometer on  
economizer module can be adjusted  
as follows:  
0% - 500ppm, 50% - 1000 ppm,  
100% - 1500ppm  
3. Mount the back plate to the wall  
with screws. Note that the arrow  
on the back plate shows the  
mounting direction.  
The outside air damper will  
modulate from minimum position  
setting to up to 100% while  
attempting to maintain the CO  
2
setpoint.  
To connect the wall mounted CO  
2
sensor, Refer to the wiring diagram  
provided in the unit.  
Figure 12 - Jumper settings  
OUTPUT  
SELECTION  
JUMPERS  
34  
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Controls  
Mounting the duct-mounted CO  
sensor  
1. Select a proper location on the  
CO sensor maintenance  
2
2
This CO sensor has excellent  
2
stability and requires no  
duct to mount the CO sensor.  
2
maintenance. In most environments  
the recommended calibration  
interval is five years. A trained  
service technician can use a  
2. Drill a 22-25 mm hole in the  
mounting surface for sensor  
insertion (Figure 13).  
portable CO meter to certify sensor  
3. Attach the mounting plate to the  
duct wall with four screws.  
4. Insert the sensor through the  
mounting plate, adjusting the  
depth for optimal air sensing.  
2
calibration. If, when checking the  
sensor, the reading differs too much  
from the reference value, the sensor  
can be recalibrated in the field. A  
calibration kit, software, and  
calibration gases are required. If  
certified accuracy is required, the  
sensor must be calibrated against  
accurate and traceable calibration  
gases in a laboratory. ConsultTrane  
BAS for further details.  
Figure 13 - Duct-mounted CO sensor  
2
5
1 /8 in.( 42 mm)  
7
/8 in.(2 2 mm)  
5
1 /8 in.  
(42 mm)  
Figure 14 - Duct-mounted CO insertion depth  
2
1
1
1
2 /2 in.(64 mm)  
3 /8 - 5 /2 in. (80 - 140mm)  
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Controls  
Note:This potentiometer allows to  
adjust the permanent fresh air  
intake from 0 to 50%.  
Remote potentiometer  
To install the remote potentiometer,  
cut the jumper WL on the  
economizer ECA board, and connect  
the wires to P and P1.  
0 W corresponds to closed fresh air  
damper.  
270 W corresponds to 50% open  
fresh air damper.  
Note:This potentiometer allows to  
adjust the permanent fresh air  
intake from 0 to 50%.  
0 W corresponds to closed fresh air  
damper.  
270 W corresponds to 50% open  
fresh air damper.  
Figure 15 - Remote potentiometer dimensions  
Figure 16 - Remote potentiometer wiring  
P
P
1 = Remote potentiometer  
2 = ECA Board  
WH = White wire  
RD = Red Wire  
BU = Blue wire  
_____ Factory wiring  
-------- Field wiring  
36  
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Controls  
Note: Do not permit element guard  
to touch internal parts. Do not  
locate sensor where the air  
Fire thermostat  
There are two sensors in the fire  
thermostat Kit: Sensor X13100040-  
01 is factory-set to open at 57°C.  
Sensor X13100040-02 is set to open  
at 115°C.  
circulation is restricted by baffles.  
Connection of the fire thermostat  
withTCI board : Refer to the wiring  
diagram provided in the unit.  
Sensors are mounted directly in the  
ductwork.They should be installed  
where elements can respond quickly  
to air temperature changes. If not  
possible, the sensor may be  
installed on a suitable bracket so  
the air is drawn across the element.  
Sensor X13100040-01 has to be  
mounted in the return air duct.  
Sensor X13100040-02 has to be  
mounted in the supply air duct.  
Connection withoutTCI board  
Connect according to the standard  
wiring diagram provided on the  
unit.  
Remove sensor cover and fasten  
control securely with screws. Loads  
connected must not exceed 2 amps,  
30V Ac.  
Figure 17 - Duct mounting of fire thermostat  
1 = Fire thermostat  
2 = Hole in the duct  
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Controls  
Clogged filter detector  
High temperature safety  
thermostat  
This additional safety device is a  
manual reset thermostat for gas  
fired units (YKD/YKH), required  
mainly by the French ERP  
regulation. It is located in the gas  
burner section. It stops the gas  
burner and the supply air fan when  
the supply air temperature rises to  
120°C.  
Thermostats  
6 thermostats are available:  
This device is mounted in the filter  
section.The sensor measures the  
difference in pressure before and  
after the filter section.The  
information is sent to theTHP03  
thermostat, to aTracker™ or to a  
BMS.  
THS01/THP01,THS02/THP02 and  
THS03/THP03.  
"THS" are non programmable  
thermostats, "THP" are  
programmable.  
01 and 02 series are conventional  
thermostat, 03 series are dedicated  
to the controller.  
Smoke detector  
This device is used to detect smoke  
in the air stream. It includes a  
factory mounted detector connected  
to a central panel, both fitted in the  
fan section.  
Remote fault relay  
This is a factory mounted relay used  
to send alarm signals (dry contact)  
to a local BMS or a local control  
panel. With this relay, the  
compressor, heating, fan and power  
supply alarm output signals from  
the controller are reported to a  
single dry contact.  
When smoke is detected, it shuts off  
the unit. A dry contact is available  
on the control panel for a remote  
default.  
Table 32 -Thermostats features  
THS01  
THP01  
THS02  
THP02  
THS03  
THP03  
non-programmable  
programmable  
X
-
X
-
X
-
-
X
-
X
-
X
electronic  
X
X
X
X
X
X
unit control type design  
interface card needed  
for Cooling Only units  
for Heat Pump units  
for Gas Fired units  
Cooling stages  
electromech.  
electromech.  
electromech.  
electromech.  
Reliatel  
Reliatel  
CTI*  
CTI*  
CTI*  
CTI*  
none  
none  
X
-
X
-
-
X
-
-
X
-
X
X
X
2
X
X
X
2
X
2
X
2
2
2
auxiliary heating stages  
(elec. heater, HWC )  
2
2
1
1
2
2
heating stages  
(heat pump mode)  
none  
none  
1
1
1
1
liquid crystal display  
X
X
X
X
-
X
*some important features are lost while using the CTI card.  
Note: thermostats are powered up by the rooftop control (24V)  
38  
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Controls  
Other accessories available  
Communication Interfaces  
TRANE Communication Interface  
(TCI-R) board  
Remote temperature sensor to be  
used withTHS/THP 01-02  
TZS01: Remote room temperature  
sensor to be used withTHS/THP 03,  
Tracker or Varitrac systems.  
This is an electronic board, factory-  
mounted in the main control panel,  
needed to allow communication  
between aTRANE Integrated  
Comfort system (TRACKER or  
Varitrac CCP2) and the unit. (COM3-  
COM4)  
DTS: Duct temperature sensor to be  
used withTHS/THP 03  
TZS02: Remote room temperature  
sensor with adjustable thumwheel  
setpoint to be used withTracker or  
Varitrac systems  
LON Communication Interface  
(LCI-R) board  
TZS04: Room temperature sensor  
with adjustable thumbwheel and  
override button, to be used with  
Tracker or Varitrac systems  
This is an electronic board, factory-  
mounted in the main control panel,  
needed to allow communication on  
®
a LonTalk Network at the unit level.  
Refer to separate documentation for  
more information.  
®
LonTalk . Communication Interface  
(LCI-R) board  
This interface board allows Voyager  
®
units to communicate on a LonTalk  
Network at the unit level. Network  
variables are based on the  
®
LonMark . Space Comfort Controller  
Functional ProfileTemplate.The LCI-  
V uses a FreeTopology transceiver  
FTT-10A.The FTT-10A transceiver  
supports non-polarity sensitive, free  
topology wiring, allowing the  
system installer to use star, bus,  
and loop architecture.The LCI-V can  
also be connected to an optional  
HighTemperature Limit Switch if  
installed with the rooftop unit. For  
more information, see attached  
manual LTCI-IN-1.  
RT-SVX19A-E4  
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Unit Options  
Hot water coil: Installation and  
connection  
Hot water coil  
(Down flow units only)  
In order to prevent water to freeze  
up in the coil during unoccupied  
period or shutdown limited period,  
it is recommended to use ethylene  
glycol.The services of a water  
treatment specialist are  
recommended if water used can  
cause scaling deposits or erosion.  
Insulate all the water piping likely to  
be exposed to freezing  
temperatures in order to avoid  
freeze up of the coil and heat losses.  
The water distribution network must  
be fitted with vents in places where  
air is likely to be trapped.  
In order to prevent water to freeze  
up in the coil during unoccupied  
period or shutdown limited period,  
a thermostat opens when there is a  
risk of freeze-up.The services of a  
water treatment specialist are  
recommended if water used can  
cause scaling deposits or erosion.  
Insulate all the water piping likely to  
be exposed to freezing  
temperatures in order to avoid  
freeze up of the coil and heat losses.  
The water distribution network must  
be fitted with vents in places where  
air is likely to be trapped.  
The hot water coil is factory  
Table 33 - Ethylene glycol percentage  
mounted in the discharge section.  
Two holes are provided to connect  
the hot water coil.They are located  
at the base of the unit. Remove the  
central panel to access the coil,  
using an 8 mm wrench (the bolts  
are located on the bottom part of  
the panels).The tubes for entering  
and leaving water are equipped  
with a threaded female connector.  
Ethylene glycol  
Freezing point  
percentage  
(%)  
10  
(°C)  
-4  
20  
-10  
Water connection inlet/outlet: 1 ¼"  
ISO R7.  
Figure 18 - Hot water coil connections  
40  
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Unit Options  
Electric Heater  
Soft Starter  
Electric heaters are fitted on the fan  
discharge.  
The soft starter is used to achieve a  
progressive supply fan start and a  
reduced starting current as well as  
the motor starting torque.This  
option is well adapted for textile  
duct applications. It is factory  
Heaters have two heating stages  
and provided with two types of  
overheat thermostats:  
Automatic reset thermostats  
which stop the electric heater  
when the air temperature rises to  
76°C. Automatic reset at 60°C. No  
alarm output available.  
installed in the main control panel.  
The soft starter gradually increases  
the voltage of the supply fan motor  
until it reaches full line voltage.  
The manual reset thermostat  
which stop the unit when the air  
temperature rises to 120°C. No  
alarm output available.  
The starting time can be adjusted  
from 0 to 64 seconds but the soft  
starter is factory set to the  
maximum starting time value,  
64 seconds.  
Figure 19 - Soft starter  
1
Supply  
Start / Line  
Stop / Load  
6
Urg.  
Stop  
Motor  
Softstarter  
5
4
Ctrl  
Byp.  
Diag.  
INITAL  
TORQUE  
Time(s)  
3
2
1 =Three phase mains connections  
2 = Motor connections  
3 = Settings  
4 = Status outputs  
5 = Controls  
6 = LEDs  
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Unit Options  
This option includes for the hood  
itself, a wire mesh and a slidable  
damper.  
0 - 25% fresh air hood  
The 0-25% fresh air hood allows to  
introduce fresh air into the unit.  
The slidable damper has to be  
adjusted manually by removing the  
screws and sliding it off up or down  
(Figure 20).  
This is a manual device fitted on the  
back of the unit, sized for a  
maximum of 25% of the nominal  
rooftop air flow.  
The amount of fresh air introduced  
is then permanently fixed.  
Figure 20 - 0-25% manual fresh air hood  
1
3
2
1 = Intake hood  
2 = Wire mesh  
3 = Slidable damper  
42  
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Unit Options  
This option includes exhaust hoods  
and gravity dampers located in the  
return air section (Figure 22). When  
the pressure of the building  
increase, the gravity dampers open  
and relieve air to the outside.  
Barometric relief  
The barometric relief allows to  
minimize overpressure in the  
building caused by the introduction  
of fresh air.This option is typically  
installed when fresh air intake is  
below 25% of the nominal air flow  
and when the return air pressure  
drop is below 25Pa.  
If the return air duct pressure drop  
is higher than the building  
overpressure, the gravity dampers  
will not open.  
If the return air duct pressure drop  
is lower than the building  
overpressure, the gravity dampers  
will open and releive air outside of  
the building.  
Figure 21 - Economizer flow chart with barometric relief  
S
R
S
E
R
F
F
Downflow version  
Horizontal flow version  
R = return  
S = supply  
F = fresh air  
E = exhaust  
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Operation  
Remote Sensing Capabilities are  
not available on most  
mechanical thermostats.  
SpaceTemperature Averaging  
capabilities are not available on  
most mechanical thermostats.  
27½ to 50 VAV – Conventional  
thermostat input terminals are  
inactive.  
Built in Night Set Back and  
Unoccupied Functions function  
differently with a conventional  
mechanical thermostat.  
A built-in algorithm which allows  
for automatic reset of the  
Customers occasionally require  
operation with a conventional  
thermostat rather than a zone  
sensor. In some cases there is a  
preference for a specific thermostat  
model, and in others there is  
reluctance to adopt newer  
technology that may not be as well  
understood as conventional  
thermostats. In addition, non-Trane  
Building Controllers typically  
provide an interface to HVAC  
equipment based on a conventional  
thermostat interface. Units applied  
with this type of controller need to  
accept conventional thermostat  
inputs.  
Operation with a  
conventional thermostat  
The ReliaTel module has  
conventional thermostat  
connections as well as Zone Sensor  
Module connections. When a  
conventional thermostat is  
controlling the unit, operation  
differs as follows.  
Supply AirTempering feature is  
not available. If outdoor air is  
being introduced through the  
equipment, discharge air  
temperature may be cold when  
not actively heating.  
discharge air temperature while  
economizing is not available.  
Proportional Integral (PI) control  
is not available.  
Conventional thermostat signals  
represent direct calls for unit  
functions. In their simplest  
applications, thermostat contacts  
directly control contactors or other  
load switching devices.This function  
provides inputs for the thermostat  
signals and processing to enhance  
reliability and performance.  
The terminal strip for attaching the  
thermostat wires is located on the  
RTRM module in the control  
compartment.  
Zone Sensor Diagnostics are  
only available on the RTRM  
module on the J6 terminals,  
instead of at the Zone Sensor in  
the space.  
The purpose of each terminal is  
discussed in the next section.  
Intelligent Fall-Back is not  
available. If a failure occurs in  
the device controlling the  
COM  
T
Compressor protection and  
equipment, operation will cease.  
reliability enhancement functions  
(HPC, LPC, Minimum On/Off timers,  
etc.). All operate the same whether  
applied with zone sensors or a  
conventional thermostat.  
Heat Pump Smart Recovery and  
Smart Staging is not available.  
Heat Pump operation becomes  
more costly unless the generic  
control being applied can  
accomplish this.  
X2  
Y2  
W2  
G
Logic is also provided to cause  
appropriate unit functions when  
inappropriate thermostat signals are  
provided. Simultaneous calls for  
heating and cooling will be ignored,  
and the fan will be turned on with a  
call for heating or cooling even if  
the fan request is not detected.  
W1/0  
Y1  
R
If the thermostat is immediately  
changed from a heating to a cooling  
call, or vice versa, there will be a  
five minute delay before the new  
call will initiate.  
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Operation  
Thermostat signals are as follows:  
Conventional thermostat –  
Gas/ Electric, Electric Heat:  
Conventional thermostat –  
Heat Pump  
R 24VAC power to thermostat  
Function when  
Input/connection energized  
Y1 Call for compressor 1 or first  
stage cooling  
Function when  
Input/connection energized :  
Cooling mode:  
G (fan)  
G (fan)  
Fan runs continuously  
except during  
unoccupied mode  
(see next page)  
Y2 Call for compressor 2 or 2nd  
stage cooling  
Fan runs continuously  
except during  
unoccupied mode  
(see next page)  
G Call for supply fan  
W1 Call for heat 1  
Y1 (compressor 1 Compressor #1 runs  
or economizer)  
or economizer  
operates  
O (reversing valve Reversing valve in  
W2 Call for heat 2  
during cooling)  
cool mode  
Heat pump only:  
Y1 + O  
Compressor #1 runs  
Y2 (compressor 2 Compressor #2 also  
or compressor 1 runs, or #1  
while economizing)compressor runs  
while economizing  
(first stage cooling) or economizer  
operates  
Y1 +Y2 + O  
X2 Call for emergency heat  
O Switchover valve On = cooling,  
Off = heating  
Compressor #2 also  
runs, or #1  
(2nd stage cool)  
W1 (gas / electric 1st stage heat  
heat first stage)  
compressor runs  
while economizing.  
T Bias for heat anticipation for those  
mechanical thermostats that use  
this function  
W2 (gas / electric 2nd stage heat (if  
Heating mode:  
G (fan)  
heat 2nd stage)  
available)  
Fan runs continuously  
except during  
unoccupied mode  
(see below)  
Y1 (both  
Both compressors  
compressors 1st run  
stage heat)  
Y2 (during heating No change  
– nothing happens)  
W2 (electric heat 2nd stage (electric)  
2nd stage)  
X2 (electric heat Electric heat only –  
only) no compressors  
heat  
T (provides heat anticipation signal for  
those mechanical thermostats that use this  
feature. If the thermostat used does not  
have a “T” terminal, disregard this  
terminal.  
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Operation  
Unoccupied mode:  
Cooling/Economizer Operation:  
If the thermostat being used is  
programmable, it will have its own  
strategy for unoccupied mode and  
will control the unit directly. If a  
mechanical thermostat is being  
used, a field applied time clock with  
relay contacts connected to J6-11  
and J6-12 can initiate an  
If unit does not have an economizer,  
the Cool/Econ Stage 1 and Stage 2  
will call directly for mechanical  
cooling (compressor) stages. If the  
unit has an economizer, the  
Cool/Econ stages will function as  
follows.  
unoccupied mode as follows:  
Contacts open: Normal occupied  
operation.  
Contacts closed: Unoccupied  
operation as follows - Fan in  
auto mode regardless of fan  
switch position. Economizer  
closes except while economizing  
regardless of minimum position  
setting.  
Table 34 - Cooling/Economizer Operation withThermostat1,2  
OK to  
Thermostat Thermostat Call for Economizer Compressor Staging  
Economize?  
Y1  
Y2  
Cooling  
Request  
No  
No  
On  
Off  
Inactive  
Compressor Output 1  
Off  
On  
On  
On  
Inactive  
Inactive  
Compressor Output 2  
Compressor  
Outputs 1 & 2  
No  
Yes  
Yes  
Yes  
On  
Off  
On  
Off  
On  
On  
Active  
Active  
Active  
Off  
Compressor off  
Compessor  
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Operation  
Table 35 - ECA board LED  
Setting the economizer  
or 0-50% motorized hood  
(option)  
OFF:  
ON:  
No Power or Failure  
Normal, OK to Economize  
Slow Flash: Normal, Not OK to  
Economize  
The ECA board is mounted on the  
damper actuator.To access the ECA  
board on economizers:  
Fast Flash: Communications Failure  
Pulse Flash: Error Code:  
1 Flash:  
Actuator Fault  
Remove the access panel located  
on the economizer section.  
The electrical power must be  
disconnected to set the  
minimum position and check the  
economizer.  
Disconnect the power supply,  
put the thermostat fan selector  
to "ON" and the "HEAT/COOL"  
selector to "OFF".This puts the  
damper in the minimum  
2 Flashes:  
3 Flashes:  
4 Flashes  
5 Flashes:  
6 Flashes:  
7 Flashes:  
8 Flashes:  
9 Flashes:  
C0 Sensor  
2
RA Humidity Sensor  
RATemp Sensor  
OA Quality Sensor  
OA Humidity Sensor  
OATernp Sensor  
MATemp Sensor  
RAM Fault  
10 Flashes: ROM Fault  
ventilation position.  
11 Flashes: EEPROM Fault  
To set the required minimum  
ventilation air position, turn the  
dial on the ECA clockwise to  
increase ventilation, or anti-  
clockwise to decrease ventilation.  
The damper will open at this  
setting whenever the fan circuit  
is powered up.  
When the arrow on the dial  
adjustment screw is pointing to 8  
o'clock, the minimum position is  
roughly 0%. When the dial is  
pointing to 12 o'clock it is  
roughly 25%, and when the dial  
is pointing to 4 o'clock it is  
roughly 50%  
While setting the minimum position  
the damper may move toward the  
new setting in several small steps.  
Once the damper has remained in  
the same position for 10 to  
15 seconds it can be assumed it is  
in the new position.  
To check the damper is functioning  
correctly, the ECA is equipped with  
an indicator light in the middle of  
the board.This light operates as in  
Table 35.  
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Operation  
Figure 22 - Minimum fresh air adjustment  
+
2-10 VDC  
POWER EXHAUST  
1
2
+
-
POWWER EXAHUST  
EXF  
MAT  
FEEDBACK  
CONTACTS  
INPUT  
1
MIXED AIR SENSOR  
1
2
PPUUTT  
2-10 VDC  
+
-
INPUT COMMON  
CONTROL  
OUTPUT  
COMMON  
1
2
OAAH/  
OAE  
OHS INPUT  
N
C
O
O  
T
N  
U
N
S
E
E
C
D
T
-
E
O
D  
A
TO  
T
IS  
1
2
OAT  
RAT  
MIN POS.  
SETPOINT  
T  
RA INPUT  
1
2
0-50%  
COMMON  
LED  
GREEN  
ABCD  
SETTINGS  
COMMON  
RHS INPUT  
T  
1
2
RAAH/  
RAE  
CO2 “PURGE”  
ADJUSTMENT  
500-1500 PPM  
SETPOINT  
1
2
CO SENSOR INPUT  
2
DDCV  
P1  
COMMON  
P
-
MODBUS  
+
COMMON  
24VAC  
SHORTED=CLOSED  
OPEN=ON CARD POT.  
270 omega = 50%  
REMOTE  
MINIMUM  
POTENTIOMETER  
WHT  
WHT  
RED  
RED  
BLUE  
BLUE  
1 = ECA board  
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Operation  
WARNING! If any operating checks  
must be performed with the unit  
operating, it is the technician's  
responsibility to recognize any  
possible hazards and proceed in a  
safe manner. Failure to do so could  
result in severe personal injury or  
death due to electrical shock or  
contact with moving parts.  
Test mode procedure at the  
ReliaTel™ control board  
Test procedures  
Operating checklist before start-up  
Operating the unit from the roof  
using the test mode at the  
ReliaTel™ control board.  
Unit is level, with sufficient  
clearance all round  
Duct network is correctly sized  
according to the unit  
configuration, insulated, and  
water-tight  
CAUTION! Before proceeding with  
the following test procedures, make  
sure that thermostat or zone sensor  
is off.  
Condensate drainage line is  
correctly sized, equipped with a  
trap, and sloped  
Power-up initialization  
CAUTION! Use one of the following  
"Test" procedures to bypass some  
time delays and to start the unit at  
the control panel.  
CAUTION! Before proceeding with  
any test procedure or operation,  
make sure that crankcase heaters  
have been energized for at least 8  
hours.  
Filters are in position, of correct  
size and quantity and clean  
Wiring is correctly sized and  
connected in accordance with  
wiring diagrams  
Each step of unit operation can be  
activated individually by  
temporarily shorting across the  
"Test" terminals for two to three  
seconds.The Liteport LED located  
on the RTRM module will blink  
when the test mode has been  
initiated.The unit can be left in any  
"Test" step for up to one hour  
before it will automatically  
terminate, or it can be terminated  
by opening the main power  
disconnect switch. Once the test  
mode has been terminated, the  
Liteport LED will glow continuously  
and the unit will revert to the  
"System" control.  
Units equipped with Scroll  
compressors do not have crankcase  
heaters.  
Power supply lines are protected  
by recommended fuses and  
correctly earthed  
Note:  
Thermostat is correctly wired  
and positioned  
Unit is checked for refrigerant  
charge and leaks  
Indoor and outdoor fans rotate  
freely and are fixed on shafts  
Upon power initialization, the RTRM  
performs self-diagnostic checks to  
insure that all internal controls are  
functional. It also checks the  
configuration parameters against  
the components connected to the  
system.The Liteport LED located on  
the RTRM module is turned "On"  
within 1 second of power-up if  
internal operation is okay.  
Supply fan rotation speed is set  
Access panels and doors are  
replaced to prevent air entering  
and risks of injury  
Checking of the gas heating  
section, in accordance with  
above procedure  
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Operation  
2. AutoTest Mode  
Test modes  
This method is not recommended  
for start-up due to the short timing  
between individual component  
steps.This method initiates the  
different components of the unit,  
one at a time, when a jumper is  
installed across the test terminals.  
The unit will start the first test step  
and change to the next step every  
30 seconds. At the end of the test  
mode, control of the unit will  
automatically revert to the applied  
"System" control method.  
There are 2 methods in which the  
"Test" mode can be cycled with the  
test button:  
1. StepTest Mode  
This method initiates the different  
components of the unit, one at a  
time, by temporarily shorting across  
the two test terminals for two to  
three seconds. For the initial start-  
up of the unit, this method allows  
the technician to cycle a component  
"On" and have up to 1 hour to  
complete the check.  
For unit test steps and test modes,  
values to cycle the various  
components, refer toTable 36.  
Table 36 - ServiceTest Guide for Component Operation on gas-fired units  
Indoor  
Fan  
Compressor Compressor  
Step  
Mode  
Economizer  
Heat 1  
Heat 2  
Outdoor 1 Outdoor 2  
1
2
1
2*  
3
Fan On  
Econ.  
CooI1  
CooI2  
Heat1  
Heat2  
On  
On  
On  
On  
On  
On  
Min  
Open  
Min  
Off  
Off  
On  
On  
Off  
Off  
Off  
Off  
Off  
On  
Off  
Off  
Off  
Off  
Off  
Off  
On  
On  
Off  
Off  
Off  
Off  
Off  
On  
Off  
Off  
On  
On  
Off  
Off  
Off  
Off  
**  
4
Min  
**  
5
Min  
Off  
Off  
6
Min  
* With Optional Accessory  
** "Off" If temperature falls below 16° ( 1°)°C, "On" if temperature rises above 18°( 1°)°C.  
Note: Steps for optional accessories and modes not present in unit will be skipped.  
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Operation  
Note: Unit to be installed outside  
only.  
Unit start-up  
Verification of gas valve settings -  
(Reserved for the qualified gas  
technician)  
Note: Expansion valve must be  
adapted to the type of gas used:  
G 20: 20 mb  
G 25: 25 mb  
G 31 (Propane): 37 or 50 mb  
WARNING! Improper gas valve  
setting may lead to burner  
destruction and people injury.  
Note: Unit factory-set for G20.  
Figure 23 - Gas valve  
1 = Negative pressure controller  
2 = Safety solenoid valve  
3 = Gas injector  
4 = Air inlets  
5 =To the burner  
6 = Fan  
7 = Gas unit  
8 = Minimum gas pressure cut-out  
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Operation  
Table 37 - Marking category of the gas section in different countries  
Country  
Category  
Type of gas  
G20  
FR  
CH+ES-GB-IE-PT  
II2H3P  
IT  
NL  
BE  
LU-DE  
AT-DK-Fl-SE  
I2H  
II2E+3P  
II2H3+  
II2L3P  
I2E+ & I3P  
I2E & I3P  
Pressure in mbar  
20  
25  
37  
20  
-
20  
-
-
20  
25  
37  
20  
20  
50  
20  
G25  
25  
30  
-
-
G31  
37  
37  
Table 38 - Gas burner data  
G350  
YK* 155-175-200-225  
1
Burner  
G350  
3
Natural Gas G20 (20mbar) 34.02 MJ/m (15°C-1013)  
Nominal rate  
Reduced rate  
Nominal rate  
Reduced rate  
Nominal rate  
Reduced rate  
Nominal rate  
Reduced rate  
CO %  
8.1  
3
Gas Flow (15 C-1013 mbar)  
Heating Capacity  
Heating Rate  
(m /h)  
(kW)  
(kW)  
%
8.13  
69.3  
69.1  
77  
76.8  
90  
Efficiency  
90  
< 0.001%  
9 ppm  
9.7%  
G20 - 20mbar  
@ 400V-3-50Hz  
Nox ppm  
Smoke analysis  
CO  
%
2
Burner  
G350  
3
Natural Gas G25 (20 ou 25 mbar) 29.30 MJ/m (15°C-1013)  
Nominal rate  
Reduced rate  
Nominal rate  
Reduced rate  
Nominal rate  
Reduced rate  
Nominal rate  
Reduced rate  
CO %  
8.8  
3
Gas Flow (15 C-1013 mbar)  
Heating Capacity  
Heating Rate  
(m /h)  
(kW)  
(kW)  
%
8.21  
62.9  
59.5  
71.5  
66.8  
88  
Efficiency  
89  
< 0.001%  
-
G25 - 25mbar  
@ 400V-3-50Hz  
Nox ppm  
Smoke analysis  
CO  
%
7. 4 %  
2
Burner  
G350  
3
Propane Gas G31 (30, 37ou 50 mbar) 88.00 MJ/m (15 C-1013)  
Nominal rate  
Reduced rate  
Nominal rate  
Reduced rate  
Nominal rate  
Reduced rate  
Nominal rate  
Reduced rate  
Nominal rate  
2.7  
3
Gas Flow (15 C-1013 mbar)  
Gas Flow (15 C-1013 mbar)  
Heating Capacity  
(m /h)  
2.56  
5.1  
(kg/h)  
(kW)  
(kW)  
4.9  
57.5  
55.3  
65.3  
62.6  
88  
Heating Rate  
Efficiency  
%
Reduced rate  
88.3  
98  
Nominal rate  
Combustion Air Flow  
(Avec E=25%)  
3
(m /h)  
Reduced rate  
CO %  
93  
< 0.001%  
-
G31 - 37mbar  
@ 400V-3-50Hz  
Nox ppm  
Smoke analysis  
CO  
%
8.9%  
2
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Operation  
Starting the unit in cooling mode  
Operating pressures  
Final installation checklist  
Are all power cables tightened?  
Check torque of power  
cables contact !  
Is the condenser fan and indoor  
blower operating correctly, i.e.  
correct rotation and without  
undue noise?  
Are the compressors operating  
correctly and has the system  
been checked for leaks?  
Have the voltage and running  
currents been checked to  
determine if they are within  
limits?  
Have the air discharge grilles  
been adjusted to balance the  
system?  
Has the ductwork been checked  
for air leaks and any  
condensation?  
Has the air temperature rise  
been checked?  
Before start-up, ensure that all  
power cables are tightened.  
After the unit has operated in  
cooling mode for a short period of  
time, install pressure gauges on the  
gauge ports of the discharge and  
suction line valves.  
Verify that the unit airflow rate is  
adjusted according to the  
information provided in the "Supply  
fan adjustment" section of this  
manual.  
Note:To bypass time delays and  
verify the operation of this unit from  
the roof, use the "Test procedure"  
section in this manual. Check the  
suction and discharge pressures.  
To start the unit in cooling mode:  
Place the zone sensor system  
switch in the "COOL" position.  
Note: Always route refrigerant  
hoses through the port hole  
provided and ensure that the  
compressor access panel is in place.  
Position the cooling setpoint  
approximately 10° below room  
temperature and place the fan  
switch in the "AUTO" or "ON"  
position.  
Cooling shutdown  
Turn on unit main power supply.  
To exit the test mode, disconnect  
unit power for 3-5 seconds and  
reapply. When running the unit  
using the zone sensor as the  
control, position the selector switch  
to "OFF".  
The condenser fan motor,  
compressor and supply fan motor  
should operate automatically.  
There will be a delay of up to  
5 minutes before the unit starts in  
cooling mode.  
Has the indoor airflow been  
checked and adjusted if  
necessary?  
Has the unit been checked for  
tubing and sheet metal rattles or  
any unusual noises?  
There may be a delay of up to  
3 minutes before compressors shut  
down and an additional one minute  
before the fan shuts down in this  
setting.  
Do not de-energize main power  
disconnect except when unit is to  
be serviced. Power is required to  
keep the compressor crankcase  
warm and boil off refrigerant in the  
oil (except on units with Scroll  
compressors).  
Are all covers and panels in  
place and properly fastened?  
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Operation  
ReliaTel™ is a microelectronic  
control feature, which provides  
operating functions that are  
significantly different from  
conventional electro-mechanical  
units.The master module is the  
ReliaTel™ Refrigeration Module  
(RTRM).  
Evaporator Fan Operation  
Cooling without an  
Economizer  
When the fan selection switch is set  
to the "Auto" position, the RTRM  
energizes the (K6) relay coil  
approximately one second after  
energizing the compressor  
contactor coil (CC1) in the cooling  
mode. In heating mode, the RTRM  
energizes the (K6) relay coil  
approximately 45 seconds after gas  
ignition. Closing the K6 contacts on  
the RTRM energizes the supply fan  
relay (F) coil to start the supply fan  
motor (IDM).  
When the system switch is set to  
the "Cool" position and the zone  
temperature rises above the cooling  
setpoint controlband, the RTRM  
energizes the (K9) relay coil located  
on the RTRM. When the K9 relay  
contacts close, the compressor  
contactor (CC1) coil is energized  
provided the low pressure control  
(LPC1) and high pressure control  
(HPC1) are closed. When the CC1  
contacts close, compressor (CPR1)  
and the outdoor fan motor (ODM)  
start to maintain the zone  
The RTRM provides compressor  
antishort cycle timing functions  
through minimum "Off" and "On"  
timing to increase reliability,  
performance and to maximize unit  
efficiency.  
Upon power initialization, the RTRM  
performs self-diagnostic checks to  
insure that all internal controls are  
functioning. It checks the  
configuration parameters against  
the components connected to the  
system.  
The RTRM de-energizes the fan  
relay (F) approximately 60 seconds  
after the cooling requirement has be  
satisfied to enhance unit efficiency.  
temperature to within 2 F of the  
sensor setpoint at the sensed  
location.  
When the heating cycle is  
terminated, the supply fan relay (F)  
coil is de-energized approximately  
90 seconds after the heating  
requirement.  
If the first stage of cooling can not  
satisfy the cooling requirement, the  
RTRM energizes the (K10) relay coil  
located on the RTRM. When the  
(K10) relay contacts close, the  
compressor contactor (CC2) coil is  
energized provided the low  
pressure control (LPC2) and high  
pressure control (HPC2) are closed.  
When the CC2 contacts close,  
compressor (CPR2) starts to  
The LED located on the RTRM  
module is turned "On" within one  
second after power-up if all internal  
operations are okay.  
When the fan selection switch is set  
to the "On" position, the RTRM  
keeps the supply fan relay coil (F)  
energized for continuous fan motor  
operation.  
When the unit is equipped with the  
optional clogged filter switch, wired  
between terminals J7-3 and J7-4 on  
the ReliaTel™ Options Module  
(RTOM), the RTRM produces an  
analog output if the clogged filter  
switch (CFS) closes for two minutes  
after a request for fan operation.  
When the system is connected to a  
remote panel, the "SERVICE" LED  
will be turned on when this failure  
occurs.  
maintain the zone temperature to  
within 2 F of the sensor setpoint  
at the sensed location.  
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Operation  
The ECA continues to modulate the  
economizer damper open/closed to  
keep the mixed air temperature that  
is calculated by the RTRM.  
Low Ambient Operation  
Cooling with an  
Economizer  
The economizer is utilized to control  
the zone temperature providing the  
outside air conditions are suitable.  
During low ambient operation,  
outside air temperature below 13ºC,  
the RTRM will cycle the compressor  
and outdoor fan motor "Off" for  
approximately three minutes after  
every 10 minutes of accumulated  
compressor run time.The supply  
fan motor (IDM) will continue to  
operate during this evaporator  
defrost cycle (EDC) and the  
compressor and outdoor fan will  
return to normal operation once the  
defrost cycle has terminated and  
the compressor "Off" time delay has  
been satisfied.  
If economizing is not possible, the  
ECA drives the damper to the  
minimum position setpoint when  
the supply fan relay (F) is energized  
and allows mechanical cooling  
operation. When the unit is  
equipped with the optional fan  
failure switch, wired between  
terminals J7-5 and J7-6 on the  
RTOM, the RTRM will stop all  
cooling functions and produce an  
analog output if the fan failure  
switch (FFS) does not open within  
40 seconds after a request for fan  
operation. When the system is  
connected to a remote panel, the  
"SERVICE" LED will flash when this  
failure occurs.  
Outside air is drawn into the unit  
through modulating dampers. When  
cooling is required and economizing  
is possible, the RTRM sends the  
cooling request to the unit  
economizer actuator (ECA) to open  
the economizer damper.The RTRM  
tries to cool the zone utilizing the  
economizer to slightly below the  
zone temperature setpoint. If the  
mixed air sensor (MAS) senses that  
the mixed air temperature is below  
53ºF, the damper modulates toward  
the closed position. If the zone  
temperature continues to rise above  
the zone temperature setpoint  
controlband and the economizer  
damper is full open, the RTRM  
energizes the compressor contactor  
(CC1). If the zone temperature  
continues to rise above the zone  
temperature setpoint controlband  
and the economizer damper is fully  
open, the RTRM energizes the  
compressor contactor (CC2).  
RT-SVX19A-E4  
55  
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Operation  
3. Comparative Enthalpy - By  
utilizing a humidity sensor and a  
temperature sensor in both the  
return air stream and the  
Economizer Set-Up  
Ignition Module  
Adjusting the minimum position  
potentiometer located on the unit  
economizer Actuator (ECA) sets the  
required amount of ventilation air.  
Two Stage (IGN) runs self-check  
(including verification that the gas  
valve is de-energized). (IGN) checks  
the high-limit switches (TC01 &  
TC02) for normally closed contacts.  
With 115 VAC power supplied to the  
ignition module (IGN), the hot  
surface ignition probe (IP) is  
preheated for approximately  
45 seconds.The gas valve (GV) is  
energized for approximately  
7 seconds for trial for ignition, to  
ignite the burner.  
outdoor air stream, the unit  
control processor (RTRM) will be  
able to establish which  
conditions are best suited for  
maintaining the zone  
Two of the three methods for  
determining the suitability of the  
outside air can be selected utilizing  
the enthalpy potentiometer on the  
ECA, as described below:  
1. AmbientTemperature -  
controlling the economizing  
cycle by sensing the outside air  
dry bulb temperature.TheTable  
below lists the selectable dry  
bulb values by potentiometer  
setting.  
2. Reference Enthalpy - controlling  
the economizer cycle by sensing  
the outdoor air humidity.The  
Table below lists the selectable  
enthalpy values by  
temperature, i.e. indoor  
conditions or outdoor conditions.  
The potentiometer located on  
the ECA is non-functional when  
both the temperature and  
humidity sensors are installed.  
Once the burner is ignited, the hot  
surface ignition probe (IP) is de-  
energized by the ignition module  
(IGN) and functions as the flame  
sensing device.  
Table 39 - Potentiometer Setting  
Dry BuIb  
(°C)  
23*  
21  
Enthalpy  
(KJ/kg)  
63  
Potentiometer  
Setting  
A