This thermostat is compatible with most HVAC systems, including the following:

• 24VAC systems Note: requires both the 24R and 24C (common) wires

• Standard gas/oil/electric heating systems

  • 1 stage heating and cooling

  • 2 stage heating and cooling

• Heat Pump systems:

  • 1 stage heating and cooling

  • 2 stage heating and cooling

  • 2nd or 3rd stage Auxiliary heating (heat strips)

• Do NOT use for line voltage controls (120/240VAC)

Stop! Before removing your existing thermostat do the following:

1. Take a picture of the original wires and terminal connections

2. Label the wires with the terminal markings on the old thermostat

3. Record old thermostat terminals and the wire color connected to them below

Standard System Wiring

Heat Pump Wiring

* If you have a terminal marked “B” with a brown wire attached to it, that means you have a changeover (C/O) with heating type heat pump system. Be sure to set the change over type in the Installer Settings menu to C/O Type: w/Heat. Otherwise leave it set to w/Cool.

Standard Gas/Electric HVAC System Wiring

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1. Type. Set the HVAC System Type: set to Gas/Elec

2. Fan Type. Set the HVAC Fan Type:
   Set to Gas for typical gas furnace (fan is controlled by the furnace)
   Set to Elec for electric heat (fan call with heat call)

3. C/O type. Not used for standard systems. Ignore this setting.

4. 2nd Stage Heat. Enable second stage heating outputs
   If you have a single stage heating system, leave this set to N
   If you have a 2 stage heating system, set to Y to enable.

5. Aux Heat (HP). Not used for standard systems. Ignore this setting

6. 2nd Stage Cool. Enable second stage cooling outputs
   If you have a single stage cooling system, leave this set to N.
   If you have a two stage cooling system, set to Y to enable.

Heat Pump HVAC System Wiring

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To set the HVAC system type, go to the Thermostat Info screen
and press Setup button.

1. Type. Set the HVAC System Type: set to Heat Pump

2. Fan Type. Automatically set for heat pump systems. Ignore this setting.

3. C/O type. Change Over (reversing) Valve Type. Heat pumps change from heating to cooling by reversing operation.
   You must configure the thermostat’s changeover valve setting to work correctly with your HVAC system.
   Check your system information to be sure and note the color of original thermostat wire and the terminal it was connected to.
   No matter what the old stat connection was (O or B), connect the wire to the thermostats W2/O terminal.
   The setting of the C/O Type will set the correct system operation.
   For change over with cool systems (Orange wire, O terminal): set C/O type to w/cool (most common and default setting)
   For change over with heat systems (Brown wire, B terminal): set C/O type to w/heat

4. 2nd Stage Heat. Enable second stage heating outputs
   If you have a single stage heating system, leave this set to N
   If you have a 2 stage heating system, set to Y to enable.

5. Aux Heat (HP). If you have auxiliary heat strips, set this to Y to enable.

6. 2nd Stage Cool. Enable second stage cooling outputs
   If you have a single stage cooling system, leave this set to N.
   If you have a two stage cooling system, set to Y to enable.

Installation Setup

Before operating the system, the HVAC System Type must be setup in the Installer Settings/System Settings/Mechanical Settings Menu!

Default Settings: The HVAC System Type is default set for a Gas/Electric system with Gas Heat Fan type. If this matches the HVACsystem the thermostat is connected to, then no further setup is required.

If the HVAC system has Electric heat or is a Heat Pump system, then the Mechanical Settings must be changed to match. Go to the Installer Settings Menu to complete the HVAC setup.

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Open

HVAC System Setup

In the Installer Settings main menu, us the down arrow button to scroll down to the System Settings menu item and press Select.

Open

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HVAC Setup Settings

Set these settings to match the HVAC system the thermostat is connected to.

Type         Selects HVAC type, Gas/Electric or Heat pump (HP) Options: Gas/Elec or Heat pump             Default: Gas/Elec

Fan Type (if Type=Gas/Elec) Selects the heating system Fan type Options: Gas or Electric (heat)             Default: Gas

C/O Type (if Type=HP) Selects the Changeover Valve type for Heat Pump systems Options: w/Cool or w/Heat         Default: w/Cool

For retrofit installations, refer to the existing thermostat connections to help determine correct C/O type setting. If the original system had an orange wire connected to an “O” terminal, then it is a “changeover with cool” system. If there is a brown wire connected to the “B” terminal, then it is a “change over with heat” system. NOTE: if you get cooling when expect heating (or heating when you expect cooling), change the C/O type to the other selection.

2nd Stage Heat Enables the 2nd Stage Heating operation Options: Y or N Default: N

Aux Heat (if Type=HP) Enables Auxiliary Heat (heat strips) operation.

Options: Y or N                                     Default: Y

2nd Stage Cool Enables the 2nd Stage Cooling operation Options: Y or N Default: N

Other Installer Settings

The Installer Settings Menu includes other HVAC operation settings that can customize the thermostat for the installation. CAUTION: these settings affect HVAC system operation and should only be changed by qualified HVAC service technicians.

Installer Settings Menu Items

Display Lock          Options: Y or N       Default: N Y = Display LOCKED N = Display UNLOCKED

Service Mode

System Settings Submenu: Sets the HVAC operational settings below

Mechanical Settings Submenu: Sets HVAC system type and configuration See HVAC setup instructions above

Schedule Enable When enabled, the local thermostat’s scheduler function is enabled.

Recovery Enable For Heat Pump Systems. Intelligent setback recovery is an automatic advance start of heating to allow the system to be at setpoint by the schedule time without the use of Aux Heating.         Options: Y or N  Default: N

H/C Delta Sets the minimum separation between heating and cooling setpoints.

Fan Purge Range: Fan will continue to run after a call for heating or cooling to purge the conditioned air from the ducts.

Heating Delta Stage 1 ON     Sets the delta from setpoint that stage 1 heating starts.

Heating Delta Stage 1 OFF Sets the delta from setpoint that stage 1 heating stops.

Heating Delta Stage 2 ON     Sets the delta from setpoint that stage 2 heating starts.

Heating Delta Stage 2 OFF Sets the delta from setpoint that stage 2 heating stops.

Heating Delta Stage 3 ON     Sets the delta from setpoint that stage 3 heating starts.

Heating Delta Stage 3 OFF Sets the delta from setpoint that stage 3 heating stops.

Cooling Delta Stage 1 ON     Sets the delta from setpoint that stage 1 cooling starts.

Cooling Delta Stage 1 OFF Sets the delta from setpoint that stage 1 Cooling stops.

Cooling Delta Stage 2 ON     Sets the delta from setpoint that stage 2 cooling starts.

Cooling Delta Stage 2 OFF Sets the delta from setpoint that stage 2 Cooling stops.

Max Heat SP Sets the maximum heating setpoint value. Will not ramp or accept setpoints higher that this maximum.

Min Cool SP Sets the minimum cooling setpoint value. Will not ramp or accept setpoints lower than this minimum.

Min Run Time (MRT) Sets the minimum run time before a heating/cooling cycle turns off. Sets heating/cooling cycle time. Prevents rapid cycling.

Min Off Time (MOT) Sets the minimum off time before another heating/cooling cycle can begin. Provides compressor short cycle protection.

Fan Cycler

Remote Sensors

Dehumid Options

Restore Defaults  Restores all settings to factory defaults.

Installer Settings Summary