For additional flexibility, your thermostat has three configurable outputs. These outputs are designed to have different functions depending on how the jumpers are set (below). Each output, labeled MISC1, MISC2, and MISC3 may be set for one of the five choices available. In the diagram below, the MISC3 jumper has been set for HUM (humidification) operation, the MISC2 jumper has been set for DEHUM (dehumidification) operation, and the MISC1 jumper has been set for PROG (programmable) operation.
W3 JUMPER SETTING
If the jumper for MISC1, MISC2, or MISC3 is set to W3, the corresponding MISC screw terminal on the backplate will control a third stage of heat.
W3 MULTI-STAGE OPERATION EXPLAINED
The 3rd Stage of Heat is turned on when
PROG JUMPER SETTING
If the jumper for MISC1, MISC2, or MISC3 is set to PROG, the terminal on the backplate will control a pilot relay or other accessory. the corresponding MISC screw
PROGRAMMABLE OUTPUT – SECTION 15 of the Owner’s Manual
This jumper setting allows the MISC outputs to control a pilot relay by time, temperature, or a signal from the Internet/Phone. The following are three possible scenarios:
HUM JUMPER SETTING
If the jumper for MISC1, MISC2, or MISC3 is set to HUM, the corresponding MISC screw terminal on the backplate will control a humidification system.
HUMIDIFICATION OPERATION – SECTION 9 of the Owner’s Manual If your HVAC unit is equipped with a humidification system the thermostat will provide power to the MISC1, MISC2, or MISC3 terminal of the thermostat whenthe humidity in the home falls below the humidity setpoint you have chosen. The value for this setpoint ranges from 0% to 60%. If no humidity is desired or if a humidification system has not been installed, set the value to OFF.
DEHUM JUMPER SETTING
If the jumper for MISC1, MISC2, or MISC3 is set to DEHUM, the corresponding MISC screw terminal on the backplate will be connected to the dehumidification terminal of a furnace board.
NOTE: Not all furnaces have a dehumidification terminal.
DEHUMIDIFICATION OPERATION – SECTION 10 of the Owner’s Manual If your HVAC unit is equipped with a dehumidification system the thermostat will operate in one of two ways.
Y2 JUMPER SETTING
If the jumper for MISC1 is set to Y2 the MISC1 screw terminal on the backplate will control a second stage of cooling.
Y2 OPERATION – SECTION 14 of the Owner’s Manual
Control up to two Cool stages.
The 2nd Stage of heat or cool is turned on when:
If the terminal designations on your old thermostat do not match those on the new thermostat, refer to the chart below, or the wiring diagrams that follow.
6 Wire, 1 Stage Cooling, 1 Stage Heat
Residential & Commercial 1 Stage Cooling, with 1st stage Gas Heat
Commercial Heat Pump 1 Stage Cooling with 2 Stage Heat
Residential & Commercial 1 Stage Cooling, with 1st stage Electric Heat
Residential Heat Pump with O Reversing Valve 1 Stage Cooling, with 2 stage Heat
Residential Heat Pump with b Reversing Valve 1 Stage Cooling, with 2 stage Heat
Adding a 2nd Stage of Cooling (MISC1), Sprinkler System (MISC2),and 3rd Stage of Heating or Dual Fuel Applications (MISC3)
Adding a Humidification System (MISC1) and Dehumidification System (MISC2)
CK1 and CK2 terminals wired to a Time Clock
For instructions on wiring the optional Remote and Outdoor Sensors, please see page 16.2 of the Owner’s Manual
DRY CONTACT SWITCH – The terminals are ‘normally open’ (or may be programmed for normally closed operation, see page 17.2 of the Owner’s Manual). Closing or completing the circuit will cause the thermostat to do one of the following:
Under normal circumstances it will not be necessary to adjust the calibration of the temperature and humidity sensors. If calibration is required, please contact a trained HVAC technician to correctly perform the following procedure.
After calibration is complete, press the MODE button once to return to normal operation.
NOTE: Due to the Random Start feature, outputs may not energize for up to 30 seconds when the thermostat is first powered (see page 16.4 of the Owner’s Manual)
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