Aprilaire 8353 User Manual download pdf (Page 9)

To Test Thermostat

WARNING: DO NOT SHORT (JUMPER) ACROSS TERMINALS OF GAS

VALVE OR SYSTEM CONTROL TO TEST OPERATION. THIS WILL DAM-

AGE THE THERMOSTAT AND VOID YOUR WARRANTY.

CAUTION: Do not switch system to cool if the temperature is below

50°F (10°C). This can damage the air conditioning system and cause

personal injury.

1. Place the COOL-OFF-HEAT

switch into the COOL position

2. Press the button until the temperature

setting is at least 3 degrees below the room temperature. The

air conditioning system should turn on within a few seconds.

NOTE: There is a built in 5-minute delay on break for compressor

protection. A second attempt to turn on the air conditioning will

result in a 5-minute delay in compressor activation.

3. Put the COOL-OFF-HEAT switch into

the OFF position. The air conditioning

system should turn off. The fan may

continue to run for a short period of time.

4. Put the COOL-OFF-HEAT switch

into the HEAT position.

5. Press the button until the temperature setting is at least

3 degrees above room temperature. The heating system should

turn on. The fan may not turn on immediately, depending upon

the fan delay built into the furnace.

6. Put the COOL-OFF-HEAT switch

into the OFF position. The heating

system should turn off. Once again,

the fan may have a delay.

7. Put the FAN: AUTO–ON switch

to the ON position. The blower

fan should turn on.

8. Put the FAN: AUTO–ON switch

to the AUTO position. The blower

fan should turn off.

COOL-OFF-HEAT

FAN: AUTO - ON

FAN: AUTO-ON

COOL-OFF-HEAT

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Aprilaire 8353 User Manual Page 9