Honeywell PRO TH3110B User manual

Installation
Guide
TH3110B
Non-programmable Digital Thermostat

PRO TH3110B Non-programmable Digital Thermostat
1
Product Application
This thermostat provides electronic control of 24 VAC single-stage heating and cool-
ing systems, or 750 mV heating systems.
System Types
• Gas, oil, or electric heat with air
conditioning
• Warm air, hot water, high-efficiency
furnaces, heat pumps, steam, gravi-
ty
• Heat only
• Heat only with fan
• Cool only
• 750 mV heating systems
Power Type
• AA alkaline batteries (2)
System Settings
• Heat, Off, Cool
Fan Settings
• 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.
Install the thermostat about 5 feet (1.5m) above the floor in an area
with good air circulation at average temperature.
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
NO
NO NO
® U.S. Registered Trademark. Patents pending.
Copyright © 2005 Honeywell International Inc. All rights reserved.
IInnssttaallllaattiioonn
Pre-installation checklist ................2
Wallplate installation ......................3
Wiring..............................................4
Wiring diagrams ..............................5
IInnssttaalllleerrSSeettuupp
Fan operation settings ....................6
Battery installation ..........................7
Thermostat mounting ....................7
Installer setup..................................8
Installer system test ........................9
AAppppeennddiicceess
Quick reference to controls..........10
Quick reference to display............10
Compressor protection ................10
In case of difficulty ......................11
Accessories....................................12
Specifications ................................12
Table of contents
Installation tips

PRO TH3110B Non-programmable Digital Thermostat
1
Product Application
This thermostat provides electronic control of 24 VAC single-stage heating and cool-
ing systems, or 750 mV heating systems.
System Types
• Gas, oil, or electric heat with air
conditioning
• Warm air, hot water, high-efficiency
furnaces, heat pumps, steam, gravi-
ty
• Heat only
• Heat only with fan
• Cool only
• 750 mV heating systems
Power Type
• AA alkaline batteries (2)
System Settings
• Heat, Off, Cool
Fan Settings
• 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.
Install the thermostat about 5 feet (1.5m) above the floor in an area
with good air circulation at average temperature.
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
NO
NO NO
® U.S. Registered Trademark. Patents pending.
Copyright © 2005 Honeywell International Inc. All rights reserved.
IInnssttaallllaattiioonn
Pre-installation checklist ................2
Wallplate installation ......................3
Wiring..............................................4
Wiring diagrams ..............................5
IInnssttaalllleerrSSeettuupp
Fan operation settings ....................6
Battery installation ..........................7
Thermostat mounting ....................7
Installer setup..................................8
Installer system test ........................9
AAppppeennddiicceess
Quick reference to controls..........10
Quick reference to display............10
Compressor protection ................10
In case of difficulty ......................11
Accessories....................................12
Specifications ................................12
Table of contents
Installation tips

PRO TH3110B Non-programmable Digital Thermostat
3
Installation Guide
2
Pre-installation checklist
Package contents
Check to make sure your package includes the following items:
Operating manual
Wall anchors and
mounting screws
(2 each)
AA alkaline
batteries (2)
PRO TH3110B
digital thermostat
(wallplate attached to back)
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)
Remove the wallplate from the ther-
mostat as shown at left, then follow
directions below for mounting.
1 Pull wires through wire hole.
2 Position wallplate on wall, level and
mark hole positions with pencil.
3 Drill holes at marked positions as
shown below, then tap in
supplied wall anchors.
4 Place wallplate over anchors, insert
and tighten mounting screws.
Grasp top and bottom of wallplate
and pull to remove from thermostat.
Drill 3/16” holes for drywall.
Drill 7/32” holes for plaster.
Wall anchors
Mounting screwsWire hole
Wallplate installation

PRO TH3110B Non-programmable Digital Thermostat
3
Installation Guide
2
Pre-installation checklist
Package contents
Check to make sure your package includes the following items:
Operating manual
Wall anchors and
mounting screws
(2 each)
AA alkaline
batteries (2)
PRO TH3110B
digital thermostat
(wallplate attached to back)
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)
Remove the wallplate from the ther-
mostat as shown at left, then follow
directions below for mounting.
1 Pull wires through wire hole.
2 Position wallplate on wall, level and
mark hole positions with pencil.
3 Drill holes at marked positions as
shown below, then tap in
supplied wall anchors.
4 Place wallplate over anchors, insert
and tighten mounting screws.
Grasp top and bottom of wallplate
and pull to remove from thermostat.
Drill 3/16” holes for drywall.
Drill 7/32” holes for plaster.
Wall anchors
Mounting screwsWire hole
Wallplate installation

PRO TH3110B Non-programmable Digital Thermostat
5
Installation Guide
4
Wiring
1 Loosen screw terminals, insert
wires into terminal block, then re-
tighten screws.
2 Push excess wire back into the
wall opening. Keep wires in shaded
area as shown at left.
3 Plug the wall opening with non-
flammable insulation to prevent
drafts from affecting thermostat
operation.
Terminal Designations
WWHeat relay.
YYCompressor contactor.
GGFan relay.
OOHeat pump changeover valve ener-
gized in cooling.
RRccCooling power. Connect to
secondary side of cooling
system transformer.
RRHeating power. Connect to
secondary side of heating
system transformer.
BBHeat pump changeover valve ener-
gized in heating.
Terminal
block
NOTES
R & Rc terminals
In single-transformer system, leave metal
jumper in place between R & Rc. Remove
metal jumper if two-transformer system.
Heat pump systems
If wiring to a heat pump, use a small piece of
wire (not supplied) to connect terminals W
and Y.
Wire specifications
Use 18- to 22-gauge thermostat wire.
Shielded cable is not required.
Keep wires in this
shaded area
CAUTION: ELECTRICAL HAZARD. Can cause electrical shock or equipment damage.
Disconnect power before wiring.
Wiring
Typical 1H/1C system: 1 transformer Typical 1H/1C system: 2 transformers
Power supply. Provide disconnect means and overload protection as required.
Factory-installed jumper. Remove for 2-transformer systems only.
Use either Oor Bterminals for changeover valve.
Use a small piece of wire (not supplied) to connect Wand Yterminals.
Set fan operation switch to Heat Pump (see page 6) and configure for heat pump (see pg. 8).
Remove jumper
Wiring diagrams
Typical 1H/1C heat pump system Typical heat-only system
Typical heat-only system with fan Typical cool-only system

PRO TH3110B Non-programmable Digital Thermostat
5
Installation Guide
4
Wiring
1 Loosen screw terminals, insert
wires into terminal block, then re-
tighten screws.
2 Push excess wire back into the
wall opening. Keep wires in shaded
area as shown at left.
3 Plug the wall opening with non-
flammable insulation to prevent
drafts from affecting thermostat
operation.
Terminal Designations
WWHeat relay.
YYCompressor contactor.
GGFan relay.
OOHeat pump changeover valve ener-
gized in cooling.
RRccCooling power. Connect to
secondary side of cooling
system transformer.
RRHeating power. Connect to
secondary side of heating
system transformer.
BBHeat pump changeover valve ener-
gized in heating.
Terminal
block
NOTES
R & Rc terminals
In single-transformer system, leave metal
jumper in place between R & Rc. Remove
metal jumper if two-transformer system.
Heat pump systems
If wiring to a heat pump, use a small piece of
wire (not supplied) to connect terminals W
and Y.
Wire specifications
Use 18- to 22-gauge thermostat wire.
Shielded cable is not required.
Keep wires in this
shaded area
CAUTION: ELECTRICAL HAZARD. Can cause electrical shock or equipment damage.
Disconnect power before wiring.
Wiring
Typical 1H/1C system: 1 transformer Typical 1H/1C system: 2 transformers
Power supply. Provide disconnect means and overload protection as required.
Factory-installed jumper. Remove for 2-transformer systems only.
Use either Oor Bterminals for changeover valve.
Use a small piece of wire (not supplied) to connect Wand Yterminals.
Set fan operation switch to Heat Pump (see page 6) and configure for heat pump (see pg. 8).
Remove jumper
Wiring diagrams
Typical 1H/1C heat pump system Typical heat-only system
Typical heat-only system with fan Typical cool-only system

PRO TH3110B Non-programmable Digital Thermostat
7
Installation Guide
6
•GGaassoorrOOiill::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.)
•EElleeccttrriiccoorrHHeeaattPPuummpp::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 GG
terminal.)
Set fan operation switch
Fan operation settings
Install batteries in back of thermostat
Install two AA alkaline batteries in the
back of the thermostat, as shown at
left.
Fresh batteries should be installed
immediately when the RREEPPLLAACCEEBBAATTTTwarn-
ing begins flashing (see page 10.) The
warning flashes about two months
before batteries are depleted.
Even if the warning does not appear,
Batteries should be replaced once a year,
or before the home is left vacant for
more than a month.
Battery installation
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.
Thermostat mounting

PRO TH3110B Non-programmable Digital Thermostat
7
Installation Guide
6
•GGaassoorrOOiill::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.)
•EElleeccttrriiccoorrHHeeaattPPuummpp::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 GG
terminal.)
Set fan operation switch
Fan operation settings
Install batteries in back of thermostat
Install two AA alkaline batteries in the
back of the thermostat, as shown at
left.
Fresh batteries should be installed
immediately when the RREEPPLLAACCEEBBAATTTTwarn-
ing begins flashing (see page 10.) The
warning flashes about two months
before batteries are depleted.
Even if the warning does not appear,
Batteries should be replaced once a year,
or before the home is left vacant for
more than a month.
Battery installation
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.
Thermostat mounting

10
PRO TH3110B Non-programmable Digital Thermostat
9
Installation Guide
8
1
5
9
14
15
System type
Heating cycle rate
(CPH: cycles/hour)
Compressor
cycle rate (CPH)
Temperature
display
Compressor
protection
0 Gas, oil or electric heat with air conditioning
1 Heat pump (5 minute compressor off time in heating and cooling)
5 For gas or oil furnaces of less than 90% efficiency
1 For steam or gravity systems
3 For hot water systems & furnaces of over 90% efficiency
9 For electric furnaces
[Other cycle rate options: 2, 4, 6, 7, 8, 10, 11 or 12 CPH]
3 Recommended for most compressors
[Other cycle rate options: 1, 2, 4, 5 or 6 CPH]
0 Fahrenheit
1 Celsius
5 Five-minute compressor off time **See page 10
[Other options: 0, 1, 2, 3 or 4-minute off time]
Setup Function Settings & Options
To begin, press and hold the and
buttons until the display changes
Function
number
Press to change settings
Press to advance to next function
Press and hold to exit and save settings
Setting
Installer setup
Follow the procedure below to configure the thermostat to match the installed
heating/cooling system, and customize feature operation as desired.
Setup 10 0
Test
10
30
70
Heating system
Cooling system
Thermostat
information
(for reference only)
0 Heat and fan turn off.
1 Heat turns on. Fan also turns on immediately if Fan Operation
Switch is set to Electric Heat/Heat Pump (see page 6).
0 Compressor and fan turn off.
1 Compressor and fan turn on.
71 Software revision number (major revisions)
72 Software revision number (minor revisions)
73 Configuration identification code (major)
74 Configuration identification code (minor)
75 Production configuration date code (week)
76 Production configuration date code (year)
System Test System Status
Installer system test
CAUTION: EQUIPMENT DAMAGE HAZARD
Compressor protection (minimum off time) is bypassed during testing. To prevent
equipment damage, avoid cycling the compressor quickly.
System switch
System test
number
System status
Installer system test
After completing the installer setup above, press the button again to begin a
system test (see next page).
Press and hold both buttons
1 Set SSYYSSTTEEMMswitch to Cool.
2 Press to turn on cooling system, then check system status (see table, below).
3 Press to turn off cooling system.
4 Set SSYYSSTTEEMMswitch to Heat.
5 Press to turn on heating system, then check system status (see table, below).
6 Press to turn off heating system.
7 [Optional] Set SSYYSSTTEEMMswitch to Offto display thermostat information (see table, below).
Press to display 71-76.
8Press and hold to terminate system test at any time.
Follow the procedure below to test the heating and cooling system.