Aprilaire 8554 owner manual Setting High And Low Balance Points

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110-792B 7/12/01 8:28 AM Page 22

can still be programmed, the optional outdoor temperature sensor will work and the heat pump fan will turn on if the FAN button is pressed. To avoid frozen water pipes, DO NOT use the OFF mode for long periods of time during sub-freezing temperatures.

NOTE: After selecting a new mode, the thermostat initiates a delay of up to 4 minutes to protect the heat pump.

Setting High And Low Balance Points

If your system is installed with the required Model 8041 Remote Outdoor Sensor, the high and low balance points should have been properly set by your contractor.

Heat Pumps operate by extracting energy out of the outdoor air and transferring it to the indoor air. This process is efficient over a wide range of temperatures. However, at low outdoor temperatures there is a point at which it becomes more economical to operate the back-up heat without the heat pump. Conversely, the use of back-up heat with the heat pump during mild weather could use more energy than is required to heat the home.

To review the set points, press and hold the OUTDOOR button, then press the FAN button. “Hi bP” and its temperature value will appear on the display. Next, press the OUTDOOR button again and “Lo bP” and its temperature value will appear on the display. After approximately 15 seconds the display will return to normal.

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Contents Model Setting Or Changing The Weekend Program For Heating Mode Energy Star Program Information Time Schedule Setting Or Changing The Clock Important Read ALL Instructions Thoroughly110-792B 7/12/01 828 AM Setting Or Changing The Program Progressive Recovery110-792B 7/12/01 828 AM Program Schedule Setting Or Changing The Weekday Program For Heating Mode Event Setting Or Changing Weekend Program For Heating Mode Setting Or Changing Cooling Temperatures Press and release the Program button Mo Tu Reviewing Programmed Time Schedules Temperature Settings To Start Running The ProgramFor Best Performance Thermostat OperationAprilaire Model Day Programmable Thermostat Temperature Control Time Control Equipment Control Heating or cooling Setting High And Low Balance Points Using The Available Red LED Indicators Optional Settings For Additional Thermostat FeaturesAutomatically returns to the original program 110-792B 7/12/01 828 AM Power to the thermostat must be turned off See Figure Place the cover on Turn the thermostat power back on Case Of Power Failure CleaningLimited Warranty BOX 1467 MADISON, WI
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