Honeywell T6380 Thermostat User Manual

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T6380 Series  
Electronic Fan Coil Thermostats  
PRODUCT DATA  
FEATURES  
Electronic temperature sensing provides energy­  
efficient, precision operation for maximum comfort.  
Contemporary white sculpted styling.  
Vertical or horizontal mounting configurations.  
Adjustment ranges 55° to 90°F or 13° to 32°C.  
Easy­to­use set point knob.  
LED system status indicator. "OFF" de­energizes all  
connected loads.  
Three level fan speed selection.  
Constant, cycled, or on­auto selectable fan operation  
available.  
Models for manual or remote heat­cool changeover,  
heating­only, or cooling­only systems.  
Models for 2 or 4­pipe systems.  
Rugged molded thermoplastic housing with captive  
mounting screws, mounts on single­gang NEMA­  
standard (U.S.) electrical box.  
APPLICATION  
Screw terminal block connections.  
The T6380 series of electronic fan coil thermostats provide  
precision line voltage control of fan-forced Heating, Ventilat-  
ing and Air Conditioning equipment. Models are available for  
cooling-only, manual heat-cool changeover, or remote heat-  
cool changeover systems. Hydronic source heat-cool  
systems may be two or four-pipe configuration with 0, 1, or 2  
valves. Fan control options include constant, cycled, or user-  
selectable "On-Auto" operation. Manual fan speed selection  
is standard. All models feature an “Off” switch.  
Suitable for inductive­rated loads such as valves,  
relays, contactors and fans.  
Range stops and cover locking kit available.  
UL Listed. CSA Certified.  
Contents  
Specifications.................................................................. 2  
Ordering Information....................................................... 2  
Installation....................................................................... 3  
Wiring .............................................................................. 3  
Operations .................................................................... 5  
Check-out ..................................................................... 5  
M.O'D. 8/98 © Honeywell Ltd.—Honeywell Ltée. 1998 Printed in Canada Form Number 95C-10758  
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T6380 - SPECIFICATIONS, ORDERING INFORMATION  
SPECIFICATIONS  
Operating range:  
2 to + 104 F [0 to +40 C], 5 to 95% RH, non-condensing.  
3
MODELS:  
3­Speed Fan Operation  
Cycled  
On­Auto  
Fan Coil System  
Constant  
Performance Specifications:  
Precision: ±1°F temperature swing [0.9°C differential].  
Accuracy: 2°F [1°C] droop with 4 A load.  
2
-pipe System  
Cooling only  
T6383A  
Fig. 2a  
T6381A  
Fig. 5a  
T6387A  
Fig. 8a  
Dimensions:  
See Fig. 1 - Nominal Dimensions.  
Heating only  
T6383A  
Fig. 2b  
T6381A  
Fig. 5b  
T6387A  
Fig. 8a  
2
-pipe Heat-Cool  
Mounting:  
Manual Change/Over  
T6383B  
Fig. 3  
T6383A  
Fig. 2c  
T6381B  
Fig. 6  
T6381A  
Fig. 5c  
N/A  
Direct mounting on single-gang NEMA 2" x 3" flush-mount  
or 2" x 4" surface-mount electrical box, or on 4" x 4" box  
Models available for vertical or horizontal mount.  
T6387A  
Fig. 8c  
Seasonal, auto C/O  
Seasonal, auto C/O  
with aux. electric heat  
Wiring Connections:  
Screw terminal block suitable for 1 – 14 AWG, 2 – 18 AWG,  
or 1 – 1.5 mm copper wire.  
T6383B  
Fig. 4b  
T6381B  
Fig. 7b  
N/A  
2
4
-pipe Heat-Cool  
Manual C/O  
T6383B  
Fig. 4a  
T6381B  
Fig. 7a  
N/A  
Approvals:  
CSA Certified LR1322  
Underwriters Laboratories Listed E47434.  
Electrical Ratings:  
T6380 Series - Power Supply: 110-130 or 208-277 Vac  
10/-15%, 50-60 Hz.  
T6381, T6387 - Output Rating, cycled (“Auto”) fan control  
Accessories:  
272824A-T6380 Range stop/cover locking kit.  
+
2
72827A-T6380 replacement cover with Cool-Warmer  
5
0-60 Hz  
120 V  
3.8  
208 V  
2.1  
230 V  
1.9  
277 V  
1.6  
Full Load Amps*  
Locked Rotor  
Pilot Duty  
22.8  
12.6  
11.4  
9.5  
Fig. 1 — Nominal dimensions in inches and  
millimetres  
125 VA  
*
Equivalent to NEMA 1/8 horsepower rating for a hermetically-sealed  
motor such as a compressor. Allowable connected load must be  
determined by adding nameplate full load and locked rotor (inrush) ratings  
of all loads.  
T6383 – Output Rating, constant fan operation  
Thermostat (Heat and Cool outputs):  
5
0-60 Hz  
120 V  
3.8  
208 V  
2.1  
230 V  
1.9  
277 V  
1.6  
Full Load Amps  
Locked Rotor A  
Pilot Duty  
22.8  
12.6  
11.4  
9.5  
125 VA  
N/A  
Resistive (heat only)  
10.0 A  
N/A  
5.6  
Fan (Air Handler):  
5
0-60 Hz  
110-130V  
5.8  
208 V 220-240V 277 V  
Full Load Amps**  
Locked Rotor  
3.2  
2.9  
2.4  
34.8  
19.2  
17.4  
14.4  
*
*
Equivalent to NEMA 1/4 horsepower rating for a hermetically-sealed  
motor. Allowable load must be determined from fan nameplate  
ratings .  
North American national electrical codes require all ungrounded  
conductors to electric resistance heating to be broken at the thermostat  
OFF setting. The 208V and 230V resistive ratings are not UL approved.  
The 230V rating is site-approveable in Canada on 416V 4-wire Wye  
distributed systems. The non-inductive rating for 230V “a.c. mains”  
with one ungrounded conductor is 6.0A.  
ORDERING INFORMATION  
Before ordering please determine the following:  
1
2
3
4
5
. The body type: 2-way or 3-way  
. The actuator voltage : 24V/50-60Hz  
. The pipe fitting, size, and flow capacity rating (Cv) required.  
. Order Specification Number  
. Accessories, if desired.  
If you have additional questions, need further information, or would like to comment on our products or services, please write or phone:  
1
2
. Your local Home and Building Control Sales Office (please check the white pages of your phone directory).  
. Honeywell Limited, 155 Gordon Baker Rd., North York, ON M2H 3N7.  
In U.S.A. - Honeywell Inc., 1885 Douglas Drive North, Minneapolis, Minnesota 55422-4386 (612) 951-1000. International Sales and Service  
Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France, Germany, Japan, Mexico, Netherlands, Spain,  
Taiwan, United Kingdom, U.S.A.  
2
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T6380 - INSTALLATION, WIRING  
Fig. 2c T6383A: 2-pipe, heat/cool, seasonal auto-changeover,  
INSTALLATION  
constant fan  
MOUNTING:  
.
T6383A  
Mount the thermostat on an inside wall 4’ to 5' [1.5 m] above  
the floor. Do not mount where thermostat can be affected by  
drafts, radiant heat from the sun, or other sources of heat.  
T6380's mount on NEMA standard 2"x3" single gang flush or  
AQUASTAT  
FAN  
W
R
B
Cool (YEL)  
Heat (ORG)  
TOHEAT/COOL  
VALVE  
2
"x4" surface mount electrical box, or on 4"x4" box with mud  
ring adaptor (not provided).  
3
(BRN) HI  
(BLU) MED  
1 (RED) LO  
VIO)  
2
Off  
1
WIRING  
(
3
Internal schematic and external wiring connections are  
BLK  
WHT  
shown in Fig. 2a through Fig. 8c. Wiring connections may be  
made to the 8 position screw terminal block with 1- 14 AWG,  
or 2- 18 AWG, solid or stranded copper wires.  
L1(HOT)  
L2  
NEUTRAL)  
1
Exte rnal jumpe r  
(
Fig. 2a T6383A for 2-pipe, constant fan, cooling only  
T6383A  
Fig. 3 T6383B: 2-pipe, heat/cool, manual changeover, constant  
FAN  
fan  
Cool (YEL)  
TO COOLING  
VALVE  
T6383B  
SYSTEM  
Heat (ORG)  
External jumper  
Cool (YEL)  
Heat (ORG)  
TOHEATING/  
COOLING  
VALVE  
3
2
(BRN)  
(BLU)  
HI  
MED  
LO  
Off  
1 (RED)  
Cool  
External jumper  
(VIO)  
Off  
Heat  
FAN  
BLK  
WHT  
Hi (BRN)  
HI  
MED  
LO  
Med (BLU)  
Lo (RED)  
L1(HOT)  
L2  
NEUTRAL)  
(
BLK  
L1(HOT)  
WHT  
To internal heat/cool  
circuits  
L2(NEUTRAL)  
Fig. 2b T6383A for 2-pipe, constant fan, heating only  
T6383A  
FAN  
Cool (YEL)  
Fig. 4a T6383B: 4-pipe, heat/cool, manual changeover,  
constant fan  
Heat (ORG)  
TO HEATING  
VALVE  
T6383B  
3
2
(
BRN)  
SYSTEM  
HI  
MED  
LO  
(BLU)  
Cool (YEL)  
TO COOLING  
VALVE  
Off  
1 (RED)  
(VIO)  
External jumper  
Cool  
Heat (ORG)  
Off  
Heat  
TO HEATING  
VALVE  
BLK  
FAN  
WHT  
Hi (BRN)  
HI  
MED  
LO  
L1(HOT)  
L2  
NEUTRAL)  
Med (BLU)  
Lo (RED)  
(
BLK  
L1(HOT)  
WHT  
To internal heat/cool  
circuits  
L2(NEUTRAL)  
3
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T6380  
Fig. 4b T6383B: 2-pipe, heat/cool, auto changeover, with aux.  
Fig. 5c T6381A: 2-pipe, heat/cool, auto-changeover, cycled fan  
electric heat, constant fan  
.
W
AQUASTAT  
T6381A  
T6383B  
R
TO HEAT/ COOL  
VALVE  
W
FAN  
SYSTEM  
B
W
R
Cool (YEL)  
Cool (YEL)  
R
B
L1 (HOT)  
Heat (ORG)  
TO SUPPLEMENTARY  
HEAT  
Cool  
Off  
Heat (ORG)  
B
3
2
(BRN)  
(BLU)  
HI  
MED  
LO  
Heat  
FAN  
Hi (BRN)  
HI  
MED  
LO  
Off  
1 (RED)  
WHT  
Med (BLU)  
Lo (RED)  
L2 (NEUTRAL)  
(
VIO)  
BLK  
L1(HOT)  
WHT  
L2(NEUTRAL)  
To internal heat/cool  
circuits  
Exte rnal jumpe r  
TO HEATING  
COOLING VALVE  
/
Fig. 5a T6381A: 2-pipe, cooling only, cycled fan  
Fig. 6 T6381B: 2-pipe, heat/cool, manual changeover, cycled  
fan  
T6381A  
T6381B  
FAN  
.
SYSTEM  
Cool (YEL)  
L1 (HOT)  
Cool (YEL)  
TO HEATING/COOLING  
VALVE  
Heat (ORG)  
Cool  
Off  
Heat  
Heat (ORG)  
External jumper  
3
(BRN)  
HI  
MED  
LO  
2
(BLU)  
FAN  
Off  
1 (RED)  
WHT  
(BRN)  
BLU)  
RED)  
HI  
MED  
LO  
(
L2  
(
(
NEUTRAL)  
BLK  
(VIO)  
BLK  
L1(HOT)  
WHT  
Exte rnal jumpe r  
L2(NEUTRAL)  
TO COOLING  
VALVE  
Fig. 5b T6381A: 2-pipe, heating only, cycled fan  
Fig. 7a T6381B: 4-pipe, heat/cool, manual changeover, cycled  
fan  
T6381A  
T6381B  
.
FAN  
SYSTEM  
Cool (YEL)  
Cool (YEL)  
TO COOLING  
VALVE  
L1 (HOT)  
Heat (ORG)  
3
(BRN)  
Cool  
HI  
MED  
LO  
2
(BLU)  
Off  
Heat (ORG)  
TO HEATING  
VALVE  
Off  
1 (RED)  
WHT  
Heat  
FAN  
L2  
(
NEUTRAL)  
(BRN)  
BLU)  
RED)  
HI  
MED  
LO  
(
BLK  
(VIO)  
(
Exte rnal jumpe r  
TO HEATING  
VALVE  
BLK  
L1(HOT)  
WHT  
L2(NEUTRAL)  
4
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T6380 - OPERATION  
Fig. 7b T6381B: 2-pipe, heat/cool, auto-changeover, cycled fan  
Fig. 8c T6387A: 2-pipe, heat/cool, auto-changeover, on–  
with  
aux. heat  
auto fan  
.
T6387A  
W
T6381B  
SYSTEM  
Cool (YEL)  
Heat (ORG)  
AQUASTAT  
R
W
R
B
TO HEAT/ COOL  
VALVE  
On  
SYSTEM  
B
W
R
Off  
TOHEAT/COOL  
VALVE  
Cool (YEL)  
Heat (ORG)  
Auto  
FAN  
TO SUPPLEMENTARY  
HEAT  
(BRN)  
BLU)  
Cool  
Off  
HI  
MED  
LO  
(
B
(
RED)  
Heat  
FAN  
Hi (BRN)  
(
VIO)  
HI  
MED  
LO  
Med (BLU)  
Lo (RED)  
BLK  
1
WHT  
External jumper  
L1(HOT) L2(NEUTRAL)  
BLK  
L1(HOT)  
WHT  
L2(NEUTRAL)  
To internal heat/cool  
circuits  
CAUTION  
!
1
. Disconnect power supply before connecting  
wiring to prevent electrical shock and equipment  
damage.  
Fig. 8a T6387A: 2-pipe, cooling only onauto fan  
T6387A  
2
. Never jumper the supply wires or actuator terminals  
even temporarily. This may damage the thermostat.  
SYSTEM  
On  
Cool (YEL)  
TO COOLING  
VALVE  
Off  
Auto  
OPERATION  
Heat (ORG)  
As the temperature changes, the thermostat makes to  
open a valve and/or power a blower to provide heating or  
cooling. The speed at which the air is circulated is con-  
trolled by the FAN switch. Continuous (ON) or intermittent  
FAN  
(
BRN)  
HI  
MED  
LO  
(
BLU)  
(
RED)  
VIO)  
(
AUTO) fan operation is determined by model number.  
(
External jumper  
CHECK-OUT  
BLK  
L1(HOT) L2(NEUTRAL)  
WHT  
Turn power on. Check out operation according to the  
SYSTEM switch present.  
SYSTEM switch OFF de-energizes valve and fan  
circuits.  
Fig. 8b T6387A: 2-pipe, heating only onauto fan  
Models T6381B,: T6383B  
SYSTEM: HEAT - OFF - COOL  
Set the SYSTEM switch to HEAT. Rotate the  
thermostat knob clockwise to energize the heating  
valve and/or fan (fan auto/cycled mode). The  
system LED on the thermostat will light when the  
heating circuit is energized.  
T6387A  
SYSTEM  
On  
Cool (YEL)  
Off  
Auto  
Heat (ORG)  
TO HEATING  
VALVE  
Set the SYSTEM switch to COOL. Rotate the thermo  
stat knob counter-clockwise to energize the cooling  
valve and/or fan (fan auto/cycled mode). The  
system LED on the thermostat will light.  
Model T6387A  
FAN  
(
BRN)  
HI  
MED  
LO  
(BLU)  
(
RED)  
(
VIO)  
SYSTEM: ON -AUTO - OFF  
External jumper  
Set the SYSTEM switch to ON. The valve will  
operate on heating or cooling cycle depending on  
whether hot or chilled water is being supplied. The  
fan will run continuously.  
BLK  
L1(HOT) L2(NEUTRAL)  
WHT  
Set the SYSTEM to AUTO. The fan will cycle with the  
heating or cooling operation.  
5
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T6380  
Models: T6381A; T6383A  
SYSTEM: HI-OFF-MED-LO  
Set the SYSTEM switch to HI. Rotate the thermostat  
knob clockwise to energize the heating\cooling valve  
and/or fan ( constant or cycled fan). The system  
LED on the thermostat will light when the heating or  
cooling circuit is energized.  
SETTING:  
The T6380 temperature scale is marked 55 to 90°F or 13 to  
3
2°C, depending on the model. Set the dial indicator marker  
to the desired temperature.  
CALIBRATION:  
T6380 thermostats are accurately calibrated at the factory  
under controlled conditions. Do not attempt to field calibrate  
this device.This thermostat has line voltage connections.  
Home and Building Control  
In U.S.A.  
Helping You Control Your World  
Honeywell Ltd.  
Honeywell Inc.  
1
55 Gordon Baker Road  
1985 Douglas Drive North  
Golden Valley, MN 55422-3992  
North York, Ontario M2H 3N7  
Printed in Canada  

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