Aprilaire 8353 - Manual (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.
9
COOL-OFF-HEAT
COOL-OFF-HEAT
COOL-OFF-HEAT
FAN: AUTO - ON
FAN: AUTO-ON
COOL-OFF-HEAT
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