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Remove Old Thermostat

Before removing wires from old thermostat, mark wires for 
terminal identification so the proper connections will be made 
to the new thermostat. 

Installing New Thermostat

1.  Pull the thermostat body off the thermostat base. Forcing 

or prying on the thermostat will cause damage to the unit.

2.  Place base over hole in wall and mark mounting hole 

locations on wall using base as a template.

3.  Move base out of the way. Drill mounting holes. If you 

are using existing mounting holes and the holes drilled 
are too large and do not allow you to tighten base snugly, 
use plastic screw anchors to secure the base.

4.  Fasten base snugly to wall using mounting holes shown 

in Figure 1 and two mounting screws. Leveling is for 
appearance only and will not affect thermostat operation.

5.  Connect wires to terminal block on base using appropriate  

wiring schematic.

6.  Push excess wire into wall and plug hole with a fire resis-

tant material (such as fiberglass insulation) to prevent 
drafts from affecting thermostat operation.

7.  Carefully line the thermostat up with the base and snap 

into place.

Battery Location

2 "AA" alkaline batteries are included in the thermostat at the 
factory with a battery tag to prevent power drainage. Remove 
the battery tag to engage the batteries.
To replace batteries, set system to 

OFF

, remove thermostat 

from wall and install the batteries in the rear along the top 
of the thermostat (see Figure 1). For best results, use a 
premium brand "AA" alkaline battery such as Duracell

®

 or 

Energizer

®

. If the home is going to be unoccupied for an 

extended period (over 3 months) and 

 is displayed, the 

batteries should be replaced before leaving.

Power Stealing Switches

The Power Stealing Switches (Fig. 1) should be left in the 

"On"

 position for most systems. The information in the 

following table details the thermostat power method and 
switch options.

WARNING

!

Thermostat installation and all components of the 
control system shall conform to Class II circuits per 
the NEC code.

INSTALLATION 

Figure 1 – Thermostat Base Multi-Stage 1F95-1277

2 "AA" Batteries

Power 
Stealing 
Switches

Stack 

Power

Stealing 

Switch

Mounting

Hole

Mounting

Hole

Place Level

across Mounting Tabs

(for appearance only)

Place Level
across Mounting Tabs 
(for appearance only)

+
S
-

W/E

6

Y2

O/B

L

Y

W2

Rear view of thermostat

Thermostat Power Method

Switch Position/Description

Battery Powered,

 no 24 

Volt system power available.

Switches 

"On"

, thermostat 

runs on batteries.

Hardwired with Battery  
Back-up,

 for 24 Volt systems 

with common connection from 
transformer to "C" terminal 
on thermostat.

Switches 

"On"

, thermostat 

runs on power directly from 
transformer with battery back-
up.

*Battery Powered with 
Power Stealing Assist,

 

for 24 Volt systems with no 
common connection from 
transformer to "C"

 

terminal on 

thermostat.

Switches 

"On"

, thermostat 

runs on batteries and 
supplemental power drawn 
through the heat or cool circuit.

*Power Stealing Assist is very reliable to increase battery life, 
but on a small number of heating or cooling systems with high 
impedance electronic modules you may observe one of the 
following conditions:
1.  The furnace draft inducer motor may run with no call for  

heat.

2.  The furnace fan may turn on with no call for heat or may  

not turn off.

3.  The furnace may not turn off when the call for heat ends.
4.  The air conditioner may not turn off when the call for cool 

ends.

If the Power Stealing Assist method is not compatible with 
your system, place the Power Stealing Switches to 

"Off"

. This 

cancels Power Stealing Assist, operates the thermostat on 
batteries and corrects the condition.

Содержание 1F95-1277

Страница 1: ...tain mercury However this product may replace a product that contains mercury Mercury and products containing mercury must not be discarded in household trash Do not touch any spilled mercury Wearing non absorbent gloves clean up any spilled mercury and place in a sealed container For proper disposal of a product containing mercury or a sealed container of spilled mercury place it in a suitable sh...

Страница 2: ... The Power Stealing Switches Fig 1 should be left in the On position for most systems The information in the following table details the thermostat power method and switch options WARNING Thermostat installation and all components of the control system shall conform to Class II circuits per the NEC code INSTALLATION Figure 1 Thermostat Base Multi Stage 1F95 1277 2 AA Batteries Power Stealing Switc...

Страница 3: ... 1 compressor when auxiliary heat is energized Heat mode 3rd stage Emergency Mode 1st stage Note Dual Fuel option de energizes Heat mode stages 1 and 2 both compressors when auxiliary heat is energized Heat mode 4th stage Emergency Mode 2nd stage Note Dual Fuel option de energizes Heat mode stages 1 and 2 both compressors when auxiliary heat is energized Heat mode 3rd stage Emergency Mode 2nd stag...

Страница 4: ...7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3 9 3 19 20 2 1 11 10 15 16 9 8 17 13 12 4 18 Savings display indicates the feature is active 15 Remote indicates that the indoor remote temperature sensor is being accessed Outdoor Remote indi cates the outdoor remote temperature sensor is being accessed 16 Display time remote...

Страница 5: ...Management Recovery Not available if 4 is 0 8 FA Heat Cr SL Selects Adjustable Anticipation cycle rate Heat 9 FA Cool Cr SL Selects Adjustable Anticipation cycle rate Cool 10 FA Cr AU Em SL Selects Adjustable Anticipation cycle rate auxiliary This item is only to appear if HP1 or HP2 is selected above 11 OFF SC On Select stage cycle completion On or Off 12 OFF CL On Selects Compressor Lockout 13 O...

Страница 6: ...s fast cycle FA Cr in all modes Heat Cool Em To change to slow cycling SL Cr press touch keys or toggle between FA SL The cycle rates are below Mode Med Slow Heat 0 6 F 1 5 F Cool 1 2 F 1 7 F Heat Pump 1 2 F 1 7 F Emer Heat 0 6 F 1 7 F 11 Stage Cycle Completion SC Selecting SC ON will cause the thermostat to complete heating and or cooling cycles on the highest stage engaged during the cycle Therm...

Страница 7: ...sh on the thermostat Refer to Com fort Alert Codes in Troubleshooting section If a Comfort Alert module is not connected or to disable active protec tion turn this feature OFF If a Comfort Alert module is connected and this feature is turned OFF the thermostat will still receive and flash the fault codes from the Comfort Alert module but the active protection will not be enabled to protect the com...

Страница 8: ...heat and shut down the compressor When the outdoor temperature falls below the selected tem perature the gas heat will begin Default is 35 but can be set in the range of 5 to 50 A lower setting will delay the start of gas heat allowing cooler temperature in the home INSTALLER CONFIGURATION MENU 35 Select Dual Fuel Setting With DF selected On and no outdoor sensor select the dF setting from 01 09 F...

Страница 9: ...he SYSTEM key to select Cool Thermostat controls only the cooling system Off Heating and Cooling systems are off Heat Thermostat controls only the heating system Em Setting is available only when the thermostat is configured in HP1 or HP2 mode Auto Auto Changeover is used in areas where both heating and cooling may be required on the same day AUTO allows the thermostat to automatically select heat...

Страница 10: ... will disappear and the day s you copied to will be on 6 If you wish to copy this same program into other days press Copy and repeat steps 3 4 and 5 7 Press Run Schedule to return to normal operation Fill in the blank schedule on the next page then Enter the Heating Program 1 Press the Menu key and then press Set Schedule Press SYSTEM key to select Heat in the system switch area indicating the act...

Страница 11: ...equired Wake Up Morning Leave For Work Day Return Home Evening Go To Bed Night Heating Program 6 00 AM 70 F 8 00 AM 62 F 5 00 PM 70 F 10 00 PM 62 F Cooling Program 6 00 AM 75 F 8 00 AM 83 F 5 00 PM 75 F 10 00 PM 78 F Programmable Fan Option In the Set Schedule mode the Fan key is used to select the fan operation during a program period The default state of the Fan key is FAN Auto fan runs during a...

Страница 12: ... on the terminal block allow connection of the remote sensor The thermostat must have 24 VAC Common connection to terminal C for the remote sensor to operate The remote sensor can be enabled or disabled in the Installer Configuration menu item 29 When remote sensor Remote is selected Off factory default no remote sensor is enabled When remote sensor is selected On the next step is to select the re...

Страница 13: ... the dual fuel temperature setpoint menu item 33 can be set to a temperature of 5 through 50 When outdoor remote sensor is not installed a software logic based dual fuel number menu item 34 from 01 to 09 can be selected A higher temperature or dual fuel setting will provide a smaller stage separation between the heat pump and Aux to give more comfort A lower temperature or number will provide a la...

Страница 14: ... FAN Switch set to Fan ON Check each wire connection to verify they are not shorted or touching together No bare wire should stick out from under terminal block Try resetting the thermostat as de scribed above If the condition persists the manufacturer of your system or service person can instruct you on how to test the Heat Cool system for correct operation If the system operates correctly replac...

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