Honeywell TH3110D Thermostat User Manual

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Installation  
Guide  
TH3110D  
Non-programmable Digital Thermostat  
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Product Application  
This thermostat provides electronic control of 24 VAC single-stage heating and cool-  
ing systems, or 750 mV heating systems.  
System Types  
Power Type  
Gas, oil, or electric heat with air  
conditioning  
Battery power  
Common wire  
Warm air, hot water, high-efficiency  
furnaces, heat pumps, steam, gravi-  
ty  
Common wire with battery backup  
System Settings  
Heat only  
Heat, Off, Cool  
Heat only with fan  
Cool only  
Fan Settings  
750 mV heating systems  
Auto, On  
Must be installed by a trained, experienced technician  
Read these instructions carefully. Failure to follow these instructions can dam-  
age the product or cause a hazardous condition.  
Check the ratings in this booklet to verify that this product is suitable for your  
application (see page 12).  
Always test for proper operation after installation (see pages 8-9).  
CAUTION: ELECTRICAL HAZARD  
Can cause electrical shock or equipment damage. Disconnect power before  
beginning installation.  
MERCURY NOTICE  
If this product is replacing a control that contains mercury in a sealed tube, do not  
place the old control in the trash. Contact your local waste management authority for  
instructions regarding recycling and proper disposal.  
®
U.S. Registered Trademark. Patents pending.  
Copyright © 2005 Honeywell International Inc. All rights reserved.  
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PRO TH3110D Non-programmable Digital Thermostat  
Table of contents  
Installation  
Pre-installation checklist ................2  
Appendices  
Quick reference to controls..........10  
Quick reference to display............10  
Compressor protection ................10  
In case of difficulty ......................11  
Accessories....................................12  
Specifications ................................12  
Wallplate installation ......................3  
Wiring..............................................4  
Wiring diagrams ..............................5  
Installer Setup  
Fan operation settings ....................6  
Battery installation ..........................7  
Thermostat mounting ....................7  
Installer setup..................................8  
Installer system test ........................8  
Installation tips  
Install the thermostat about 5 feet (1.5m) above the floor in an area  
with good air circulation at average temperature.  
NO  
NO  
NO  
Do not install in locations where the thermostat can be affected by:  
Drafts or dead spots behind doors and in corners  
Hot or cold air from ducts  
Sunlight or radiant heat from appliances  
Concealed pipes or chimneys  
Unheated/uncooled areas such as an outside wall behind the thermostat  
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Installation Guide  
Pre-installation checklist  
Package contents  
Check to make sure your package includes the following items:  
PRO TH3110D digital thermostat (wallplate attached to back)  
Operating manual  
Wall anchors and mounting screws (2 each)  
AA alkaline batteries (2)  
Required tools & supplies  
No. 2 Phillips screwdriver  
Small pocket screwdriver  
Drill  
Drill bit (3/16”for drywall, 7/32”for plaster)  
Hammer  
Pencil  
Electrical tape  
Level (optional)  
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PRO TH3110D Non-programmable Digital Thermostat  
Wallplate installation  
Grasp top and bottom of wallplate  
and pull to remove from thermostat.  
Remove the wallplate from the ther-  
mostat as shown at left, then follow  
directions below for mounting.  
1
2
Pull wires through wire hole.  
Position wallplate on wall, level and  
mark hole positions with pencil.  
3
4
Drill holes at marked positions as  
shown below, then tap in  
supplied wall anchors.  
Place wallplate over anchors, insert  
and tighten mounting screws.  
Drill 3/16” holes for drywall.  
Drill 7/32” holes for plaster.  
Wire hole  
Mounting screws  
Wall anchors  
3
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Installation Guide  
Wiring  
CAUTION: ELECTRICAL HAZARD. Can cause electrical shock or equipment damage.  
Disconnect power before wiring.  
Wiring  
Keep wires in this  
shaded area  
1
2
3
Loosen screw terminals, insert  
wires into terminal block, then re-  
tighten screws.  
Push excess wire back into the  
wall opening. Keep wires in shaded  
area as shown at left.  
Jumper  
Plug the wall opening with non-  
flammable insulation to prevent  
drafts from affecting thermostat  
operation.  
Terminal  
block  
Terminal Designations  
W Heat relay.  
Y Compressor contactor.  
G Fan relay.  
NOTES  
R & Rc terminals  
In single-transformer system, leave metal  
jumper in place between R & Rc. Remove  
metal jumper if two-transformer system.  
O Heat pump changeover valve ener-  
gized in cooling.  
Rc Cooling power. Connect to  
secondary side of cooling  
system transformer.  
Heat pump systems  
If wiring to a heat pump, use a small piece of  
wire (not supplied) to connect terminals W  
and Y.  
R Heating power. Connect to  
secondary side of heating  
system transformer.  
C terminal  
The C (common wire) terminal is optional  
when thermostat is powered by batteries.  
B Heat pump changeover valve ener-  
gized in heating.  
Wire specifications  
Use 18- to 22-gauge thermostat wire.  
Shielded cable is not required.  
C Common wire from secondary side  
of cooling system transformer.  
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PRO TH3110D Non-programmable Digital Thermostat  
Wiring diagrams  
1
2
3
4
5
6
Power supply. Provide disconnect means and overload protection as required.  
Factory-installed jumper. Remove for 2-transformer systems only.  
Use either O or B terminals for changeover valve.  
Use a small piece of wire (not supplied) to connect W and Y terminals.  
Set fan operation switch to Heat Pump (see page 6) and configure for heat pump (see pg. 8).  
Optional 24 VAC common connection.  
Typical 1H/1C system: 1 transformer  
Typical 1H/1C system: 2 transformers  
Remove jumper  
Typical 1H/1C heat pump system  
Typical heat-only system  
Typical heat-only system with fan  
Typical cool-only system  
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Installation Guide  
Fan operation settings  
Gas or Oil: For gas or oil heating  
systems, leave the fan operation  
switch in this factory-set position  
(This setting is for systems that  
control the fan in a call for heat.)  
Electric or Heat Pump: Change the  
switch to this setting for heat  
pump or electric heat systems.  
(This setting is for systems that  
allow the thermostat to control the  
fan in a call for heat, if a fan wire is  
connected to the G  
terminal.)  
Set fan operation switch  
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PRO TH3110D Non-programmable Digital Thermostat  
Power options & mounting  
AC Power  
The thermostat can be powered by 24  
VAC power, or by batteries.  
To wire the thermostat for AC power,  
connect the common side of the  
cooling transformer to the“C”terminal  
as shown at left.  
Connect common  
side of transformer  
to “C” terminal  
Important: Remove R/Rc jumper for  
2-transformer systems only. (See wiring  
diagram on page 5.)  
Battery Power  
The thermostat can be powered by  
batteries alone or, if used with AC  
power, can provide backup power to  
the display during power interruptions.  
Install batteries in back of thermostat  
(optional if AC powered).  
To Mount Thermostat  
Align the 4 tabs on the wallplate with  
corresponding slots on the back of the  
thermostat, then push gently until the  
thermostat snaps in place.  
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Installation Guide  
Installer setup  
Follow the procedure below to configure the thermostat to match the installed  
heating/cooling system, and customize feature operation as desired.  
Press and hold both buttons  
Function  
number  
Setting  
Setup  
0
1
To begin, press and hold the  
and  
Press  
to change settings  
buttons until the display changes  
Press  
to advance to next function  
Press and hold  
to exit and save settings  
Setup Function  
Settings & Options  
1
System type  
0
1
Gas, oil or electric heat with air conditioning  
Heat pump (5 minute compressor off time in heating and cooling)  
5
Heating cycle rate  
5
1
3
9
For gas or oil furnaces of less than 90% efficiency  
For steam or gravity systems  
(
CPH: cycles/hour)  
For hot water systems & furnaces of over 90% efficiency  
For electric furnaces  
[Other cycle rate options: 2, 4, 6, 7, 8, 10, 11 or 12 CPH]  
9
4
5
Compressor  
3
Recommended for most compressors  
cycle rate (CPH)  
[Other cycle rate options: 1, 2, 4, 5 or 6 CPH]  
1
1
Temperature  
display  
0
1
Fahrenheit  
Celsius  
Compressor  
protection  
5
Five-minute compressor off time **See page 10  
[Other options: 0, 1, 2, 3 or 4-minute off time]  
Installer system test  
After completing the installer setup above, press the  
system test (see next page).  
button again to begin a  
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PRO TH3110D Non-programmable Digital Thermostat  
Installer system test  
Follow the procedure below to test the heating and cooling system.  
System test  
number  
System status  
0
10  
Test  
System switch  
1
2
3
4
5
6
7
Set SYSTEM switch to Cool.  
Press  
Press  
to turn on cooling system, then check system status (see table, below).  
to turn off cooling system.  
Set SYSTEM switch to Heat.  
Press  
Press  
to turn on heating system, then check system status (see table, below).  
to turn off heating system.  
[Optional] Set SYSTEM switch to Off to display thermostat information (see table, below).  
Press to display 71-76.  
8
Press and hold  
to terminate system test at any time.  
System Test  
System Status  
10  
Heating system  
0
1
Heat and fan turn off.  
Heat turns on. Fan also turns on immediately if Fan Operation  
Switch is set to Electric Heat/Heat Pump (see page 6).  
3
0
0
Cooling system  
0
1
Compressor and fan turn off.  
Compressor and fan turn on.  
7
Thermostat  
information  
71 Software revision number (major revisions)  
72 Software revision number (minor revisions)  
73 Configuration identification code (major)  
(for reference only)  
74 Configuration identification code (minor)  
75 Production configuration date code (week)  
76 Production configuration date code (year)  
CAUTION: EQUIPMENT DAMAGE HAZARD  
Compressor protection (minimum off time) is bypassed during testing. To prevent  
equipment damage, avoid cycling the compressor quickly.  
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Installation Guide  
Quick reference to controls  
Digital display screen  
Temperature buttons  
Press to adjust temperature  
settings  
System switch  
Cool: Thermostat controls only  
the cooling system.  
Heat: Thermostat controls only  
the heating system.  
Fan switch  
Off: Heating and cooling  
systems are off.  
On: Fan runs continuously.  
Auto: Fan runs only when heating  
or cooling system is on.  
Quick reference to display screen  
Current inside temperature  
Temperature setting  
Inside  
Set To  
°
°
Low battery warning  
7
5
System status  
7
5
On when “calling” for  
heating or cooling;  
flashes when waiting for  
compressor restart  
Heat On  
Cool On  
Replace Batt  
Built-in compressor protection (Setup Function 15)  
This feature helps prevent damage to the  
compressor in the air conditioning or heat  
pump system.  
Inside  
Set To  
°
°
5
7
75  
Damage can occur if the compressor is re-  
started too soon after shutdown.This feature  
forces the compressor to wait for a few min-  
utes before restarting.  
Cool On  
During the wait time, the message Cool On  
Message flashes until safe  
restart time has elapsed  
(or Heat On if you have a heat pump) will  
flash on the display.When the safe wait time  
has elapsed, the message stops flashing and  
the compressor turns on.  
10  
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PRO TH3110D Non-programmable Digital Thermostat  
In case of difficulty  
If you have difficulty with your thermostat, please try the suggestions below. Most  
problems can be corrected quickly and easily.  
Display is blank  
Check circuit breaker and reset if necessary.  
Make sure heating & cooling power switches are on.  
Make sure equipment door is securely closed.  
If battery powered, make sure fresh AA alkaline batteries are installed.  
Temperature  
settings do not  
change  
Make sure heating and cooling temperatures are set to acceptable ranges:  
Heat: 40° to 90°F (4.5° to 32°C).  
Cool: 50° to 99°F (10° to 37°C).  
Heating system  
does not respond  
Check for 24 Vac at the equipment on the secondary side of the trans-  
former between power and common. If voltage is not present, check the  
heating equipment to find the cause of the problem.  
(“Heat On”  
appears on  
screen)  
Check for 24 Vac between the heat terminal (W) and the transformer  
common. If 24 Vac is present, the thermostat is functional. Check the  
heating equipment to find the cause of the problem.  
Check for loose or broken wires between the thermostat and the heating  
equipment.  
Cooling system  
does not respond  
Check for 24 Vac at the equipment on the secondary side of the trans-  
former between power and common. If voltage is not present, check the  
cooling equipment to find the cause of the problem  
(“Cool On”  
appears on  
screen)  
Check for 24 Vac between the cooling terminal (Y) and the transformer  
common. If 24 Vac is present, the thermostat is functional. Check the  
cooling system to find the cause of the problem.  
Check for loose or broken wires between the thermostat and the cooling  
equipment.  
Fan does not  
turn on in a  
call for heat  
Make sure the Fan Operation switch is set to the proper system.  
Cool On” or  
Heat On”  
Compressor protection timeout is engaged. Wait 5 minutes for the  
system to restart safely, without damage to the compressor.  
is flashing  
“Heat On” is  
Set the System switch to Heat, and set the temperature level above the  
current room temperature.  
not displayed  
“Cool On” is  
Set the System switch to Cool, and set the temperature level below the  
current room temperature.  
not displayed  
11  
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Installation Guide  
Accessories  
Please contact your distributor to order accessories.  
Cover plate assembly ............................................Part Number 50002883-001  
(Used to cover marks left by old thermostats.)  
Specifications  
Temperature Ranges  
Electrical Ratings  
Heat: 40° to 90°F (4.5° to 32°C)  
Cool: 50° to 99°F (10° to 37°C)  
System  
Heating  
Voltage (50/60Hz) Running Current  
Operating Ambient Temperature  
32° to 120°F (0° to 48.9°C)  
20-30 Vac  
750 mV DC  
20-30 Vac  
0.02-1.0 A  
100 mA DC  
0.02-1.0 A  
(Powerpile)  
Shipping Temperature  
-20° to 120°F (-28.9° to 48.9°C)  
Cooling  
Operating Relative Humidity  
5% to 90% (non-condensing)  
Physical Dimensions  
3-13/16” H x 5-3/8” W x 1-1/4” D  
97 mm H x 137 mm W x 32 mm D  
12  
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Automation and Control Solutions  
Honeywell International Inc.  
985 Douglas Drive North  
Golden Valley, MN 55422  
Honeywell Limited-Honeywell Limitée  
1
35 Dynamic Drive  
Scarborough, Ontario M1V 4Z9  
Printed in U.S.A. on recycled  
paper containing at least 10%  
post-consumer paper fibers.  
®
©
U.S. Registered Trademark.  
2005 Honeywell International Inc.  
Patents pending. All rights reserved.  
9-1846 • 06-2005  
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