Honeywell PRO TH4110B User manual

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 • AA alkaline batteries (2)
conditioning
• Warm air, hot water, high-efficiency System Settings
fllrnaces, heat pumps, steam, gravity • Heat, Oft, Cool
• Heat only
• Heat only with fan Fan Settings
• Cool only • Auto, On
• 750 mV heating systems
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 hternational Inc. All rights reserved.

PRO TH4110B Programmable Thermostat
r,
Installation
Preqnstallation checklist ............... .2
WMlplate installation ..................... .3
Wiring. ............................................ .4
Wiring diagrams .............................. 5
Installer Setup
Fan operation settings ................ .6
Batte W iustallation ......................... .7
Thermostat mounting ................... .7
Installer setup ................................. .8
Installer system test ....................... .9
Appendices
Quick reference to controls .......... 10
Quick reference m display ............ 10
Compressor protection ................ l0
In case of difficulty ...................... 11
Accessories. ................................... 12
Specifications ................................ 12
InstNI the thermostat about 5 feet (1.5m) above the floor in an area
wRh good air circulation at average temperature.
\
D
Do not instaR 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

Installation Guide
Package contents
Check to make sure your package includes the l()llowing items:
PRO TH4110B
digital thermostat
(wallplate attached to back)
Wall anchors and AA alkaline
mounting screws batteries (2)
(2 each)
Operating manual
Quick reference card
Required tools & supplies
• No. 2 Phillips screwdriver
• Small pocket screwdriver
• Drill
• Drill bit (3/16" for drywall, 7/32" for plaster)
" Hananaer
• Pencil
• Electrical tape
• Level (optional)

PRO TH41 lOB Programmable Thermostat
Grasp top and bottom of wallplate
and pull to remove from thermostat. Remove the wallplate from the ther-
mostat as shown at left, then fk_llow
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.
5 Insert quick reference card in slot
in [?ont of wall plate.
Insert quick reference card after
wallplate is mounted (see mounting
instructions, below)
Drill 3/16" holes for drywall.
Drill 7/32" holes for plaster.

Installation Guide
CAUTION: ELECTRICAL HAZARD. Can cause electrical shock or equipment damage.
Disconnect power before wiring.
Jumper
0000000
/
WYG ORcR B
Terminal
block
NOTES
R & Rc termirtals
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.
Wiring
I Loosenscrew 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.
Plug the wall opening with non-
flammable insulation to prevent
drafts from affecting thermostat
opemtion.
Terminal Designations
W Heat relay.
YColYlpressor contactor.
G Fan relay.
O Heat pump changeover valve
energized in cooling.
Rc Cooling powe> Connect to
secondary side of cooling
system transformer.
R Heating power. Connect to
secondary side of heating
system transformer.
B Heat pump changeover valve
energized in heating.

PRO TH41 lOB Programmable Thermostat
i
_. Power supply. Provide disconnect means and overload protection as required.
,_ Factory-installed jumper. Remove for 2-transformer systems only.
A Use either O or B terminals for changeover valve.
,_ Use asmall 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).
Typiea_ 1H/1C system." 1 transformer
_ HEATRELAY _]
COMPRESSOR
CONTACTOR
FAN RELAY
1(HOT)
I°°°_ "°.°1
W Y G O Rc R
Typical 1H/1C system: 2 transformers
HEATRELAVI _.L,
.....* kl (HOT)
°_A2LI {HOT)
Y G ORc R
Remove jumper
Typical 1H/1C heat pump system
IwYoososolA
Typical heat=only system
C_L2
......* 1 (HOT)
I'w°°° ° °°1
Y G 0 Rc R B
Typical heat=only system with fan
FAN RELAY CL2
I(HOT)
I°_°_ °°tlW Y G O Rc R
Typical cool=only system
CONTACTOR
FAN RELAY C L2
1(HOT)
Iw_°°_°".°1g G O Rc R

Installation Guide
Gas or Oil: For gas or oil heating
systems, leave the fan operation
switch in this factory-set position
(This setting is liar systems that
control the fan in a call liar heat.)
Electric or Heat Pump: Change the
switch to this setting lk)r heat
pump or electric heat systems.
(This setting is lk_rsystems 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

PRO TH41 lOB Programmable Thermostat
Install two AA alkaline batteries in the
back of the thermostat, as shown at
left.
Install batteries in back of thermostat
Fresh batteries should lye installed
immediately when the REPLACEBATT
warnh_g begins flashhlg (see page 10.)
The warning flashes about two months
befbre batteries are depleted.
Even if the wamh_g does not appear,
Batteries should lyereplaced once a year,
or befbre the home is left vacant tbr
more than a month.
0[
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.
i

Installation Guide
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
To begin, press and hold the A and V
buttons until the display changes
Function number Setting
Press Y to change settings
Press A to advance to next function
Press and hold Yak to exit and save settings
Setup Function
1Systemtype
5 Heating cycle rate
(CPH: cycles/hour)
9 Compressor
cycle rate (CPH)
Settings & Options
0Gas_ 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]
Recommended for most compressors
[Other cycle rate options: 1, 2, 4, 5 or 6 CPH]
14 Temperature 0 Fahrenheit
display 1 Celsius
t5 Compressor
protection 5 Five-minute cempressor off time **See page 10 [Other options: 0, 1, 2, 3 or 4-minute off time]
J"3.. = "3 "||l ""3
After completing the installer setup above, press the _k button again to begin a
system test (see next page).

PRO TH41 lOB Programmable Thermostat
Follow tile procedure below to test the heating and cooling system.
System test number System status
System switch
1 Set SYSTEMswitch to Cool.
2 Press V to turn on cooling system, then check system status (see table, below).
3 Press Y to turn off cooling system.
4 Set SYSTEMswitch to Heat.
5 Press Y to turn on heating system, then check system status (see table, below).
6 Press V to turn off heating system.
7 [Optional( Set SYSTEMswitch to Off to display thermostat information (see table, below).
Press Y to display 71-76.
8 Press and hold Y A to terminate system test at any time.
System Test
10 Heating system
30 Cooling system
70 Thermostat
information
(for reference only)
System Status
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)
CAUTION: EQUIPMENT DAMAGE HAZARD
Compressor protection (minimum off time) is bypassed during testing. To prevent
equipment damage, avoid cycling the compressor quickly.

Installation Guide
Digital display screen Temperature adjustment
*Set: Press to set time/day/
schedule
oHold: Press to override
programmed temperature control
-- , Run: Press to resume program
schedule
Fan switch
On: Fan runs continuously.
Auto: Fan runs only when heating
or cooling system is on.
System switch
Cooh Thermostat controls only
the cooling system.
,Heat: Thermostat controls only
the heating system.
,Off: Heating and cooling
systems are off.
ii,
Low battery warning Current day/time
Current inside
Currentreramor,oO
p g p -
System status
(Heat On, Cool On)
Message flashes until safe
restart time has elapsed
This feature helps prevent damage to the
compressor in the air conditioning or heat
pump system.
Damage can occur if the compressor is re-
started too soon after shutdown.This feature
forces the compressor to wait for a few
minutes before restarting.
During the wait time, the message Cool On
(or Heat On if you have a heat pun-lp) will
flash on the displw:When the safe wait time
has elapsed, the message stops flashing and
the compressor turns on.
10

PRO TH41 lOB Programmable Thermostat
[f you have difficulPy with your thermostat, please try the suggestions below. Most
problems can be corrected quickly and easii F
Display is blank * Make sure fresh AA alkaline batteries are correcUy installed (see page 7).
Terapetature
settings de net
change
Make sure heating and cooling temperatures are set to acceptable ranges:
o Heat: 40° to 90°F (4.5 ° to 32°C).
* Cool: 50° to 99°F (10 ° to 37°C).
Heating system
does not respond
("Heat On"
appears on
screen)
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.
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.
o Check for loose or broken wires between the thermostat and the heating
equipment.
Cooling system
does not respond
("Coal On"
appears en
screen)
* 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
* 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.
Fen does not
turn on in a
call for heat
_'CooI On" or
"Heat On"
is flashing
"Heat On" is
net displayed
o Make sure the Fan Operation switch is set to the proper system (see page 6).
* Compressor protection timeout is engaged. Wait 5 minutes for the
system to restart safely, without damage to the compressor.
o Set the System switch to Heat, and set the temperature level above the
current room temperature (see page 10).
"Ceel On" is * Set the System switch to Cool, and set the temperature level below the
not displayed current room temperature (see page 10).
11

InstallationGuide
Please contact your distributor to order accessories.
Cover plate assembly ............................................ Part Number 50002883-001
(Used to cover marks left by old thermostats.)
Temperature Ranges
Heat: 40° to 90°F (4.5 ° to 32°C)
* Cool: 50° to 99°F (10 ° to 37°C) System
Operating Ambient Temperature Heating
*32° to 120°F (0° to 48.9°C) (Powerpile)
Shipping Temperature
= -20 ° to 120°F (-28.9 ° to 48.9°C) Cooling
Electrical Ratings
Voltage (50/60Hz)
20-30 Vac
750 mV DC
20-30 Vac
RunningCurrent
0.02-1.0A
100mADC
0.02-1.0A
Operating Relative Humidity
* 5% to 90% (non-condensing)
Physical Dimensions
* 3-13/16" H x 5-3/8" W x 1-1/4" D
97mm H x137 mmWx32mm D
12