Operating Your Thermostat, Fan Operation

INSTALLER/CONFIGURATION MENU

Record the number you select for future use.

Press MENU or RunSched to exit the menu. The security feature you select will start. The system button will remain active for 10 seconds to allow setting Heat, Off, Cool or Auto.

23)Limited Heat Range – This feature provides a maximum setpoint temperature for heat. The default setting is 90°F. It can be changed between 62°F and 98°F by pressing the

or button.

24)Limited Cool Range – This feature provide a minimum setpoint temperature for cool. The default setting is 45°F. It can be changed between 46°F and 82°F by pressing the

or button.

25)Select Compressor Off (CO) Feature Using Outdoor Sensor (dF) – This feature is applicable only in heat pump modes and with an outdoor sensor installed and enabled. When CO is enabled by selecting a temperature >5°F (01-15°C), the thermostat will use the outdoor sensor temperature to determine when to switch to gas heat and shut down the compressor.

Select DF setting (dF) – With CO selected >5, select the setting for outdoor temperature. When the outdoor tem- perature goes below the setpoint, the gas heat will begin.

Default is 5 (Off or disabled), but can be set in the range

of 6 to 50 using the or buttons.

Select dF or EA – Select dF (default) if your system has a fossil fuel (gas or oil) Auxiliary heat. Select EA if your system has Electro Auxiliary heat and you want the com- pressor to continue to run while calling for Auxiliary stage.

Select Compressor Delay (Cd) – After the auxiliary heat is turned on, the compressor(s) shut down is delayed for

the time selected (in seconds). This delay is factory set

to 60, but can be set in the range of 0 to 99 using or buttons.

26)Select Auxiliary Off (AO) – Select the temperature that will inhibit the auxiliary heating stage. As long as the out- door temperature is above the setpoint, the auxiliary heat will not turn on. The default setting is 80, but can be set in the range of 35 to 79. A setting of 80 disables this feature.

27)Economizer Feature – This item allows longer Y1 cycles for cooling with outdoor air.

28)Pre-occupancy Purge (PP) – Selects the number of hours the pre-occupancy purge time from 0 to 1, 2 or 3

hour with the or buttons.

When the pre-occupancy purge time is greater than 0 hours, the blower output ("G" terminal) will energize the number of pre-occupancy purge hours before the next programmed occupancy time period. During this pre- purge time the A1 terminal will be energized.

29)Select Filter Replacement Reminder and Set Run Time Select the "Change Filter" reminder On or OFF. If se- lected On, press MENU to select the time period from 25 to 1975 hours in 25 hours increments. In a typical system, 200 hours (default) of run time is approximately 30 days. After the selected time of blower operation, the thermostat will display "Change Filter" as a reminder to change or clean your air ﬁ lter. When "Change Filter" is displayed, press MENU or RUN SCHED button to clear the display and restart the time to the next ﬁ lter change.

30)Change UV Lamp – This feature allows the thermostat to display the words Change UV Lamp (Call for Service of UV bulb) after a set time of UV bulb operation. This is a reminder to maintain your UV system at optimum level of operation. When enabled the factory set interval for Change UV Lamp to be displayed is 350 days of UV bulb operation and can be adjusted in 25 day increments. This should be adjusted with respect to the bulb's recommend- ed maintenance schedule.

When Change UV Lamp is displayed, you can clear it by pressing MENU.

31)Select Reversing Valve Output – The O/B option is factory set at "O" position. This will accommodate the majority of heat pump applications, which require the changeover relay to be energized in COOL. If the thermo- stat you are replacing or the heat pump being installed with this thermostat requires a "B" terminal, to energize the changeover relay in HEAT, the O/B option should be set at "B" position.

OPERATING YOUR THERMOSTAT

Check Thermostat Operation

NOTE

To prevent static discharge problems, touch side of thermostat to release static build-up before touching any keys.

If at any time during testing your system does not operate properly, contact a qualiﬁ ed service person.

Fan Operation

If your system does not have a G terminal connection, skip to

Heating System.

1.Turn on power to system.

2.Move FAN switch to ON position. The blower should begin to operate.

3.Move FAN switch to AUTO position. The blower should stop immediately.

!CAUTION

Do not allow the compressor to run unless the com- pressor oil heaters have been operational for 6 hours and the system has not been operational for at least 5 minutes.

Heating System

1.Press SYSTEM button to select HEAT. If the auxiliary heating system has a standing pilot, be sure to light it.

2.Press to adjust thermostat setting to 1° above room temperature. The heat pump system should begin to oper- ate. The display should show “System On”. However, if the system conﬁ guration is set to HP1 or HP2 and setpoint temperature display is ﬂ ashing, the 5 minute compressor lockout feature is operating (see Conﬁ guration menu, item 11).

3.Adjust temperature setting to 3° above room temperature. If your system conﬁ guration is set at MS2, HP2 or HP1, the auxiliary heat system should begin to operate and the display will show “System On +2”.

4.Press to adjust the thermostat below room tempera- ture. The heating system should stop operating.