39
WIReD WAll COnTROlleR OPeRATIOn
Optional Heat Pump
With
Electric Heat (Two-Stage
Heating)
Optional wired wall control controls call for electric heat
operation (on or off).
1.
After connecting optional wired wall control to unit,
place system in Heating mode.
2.
Adjust setpoint temperature above room temperature.
3.
Compressor and fan motors start and heating begins.
4.
1°F difference between set point & room temperature
calls 1st stage heat. > 2°F difference between set point
& room temperature calls 2nd stage heat.
5.
Place setpoint temperature below room temperature.
6.
Outdoor Heat Pump unit and electric heat stop, indoor
fan remains On for additional sixty (60) seconds.
Clean filter Alarm (Wall Thermostat Mode)
Cassette controller indicates when scheduled filter cleaning
is required by flashing Timer/Alarm LED.
During normal operation, microprocessor keeps track of
unit’s run time.
• When clean filter time has elapsed, Timer/Alarm LED
flashes four times to indicate filter needs to be cleaned.
• Clean filter time is selected through configuration
menu. Available settings are 250, 500, 750,
1000
, and
1250 hours. Default in
bold
.
• If coil freeze condition is detected four times within
24-hour period, Clean Filter Alarm appears on cassette
display.
After filter maintenance has been performed, press Mode
and Fan Buttons for three (3) seconds. Control responds
with beep to indicate timer has been reset.
fan Operation
• Cassette unit utilizes 3 speed motor. In wired wall
controller operation, fan speed selection can be made
through Fan Button. See Figure 39, Page 30.
• Fan Button cycles through High, Medium, Low, & Auto.
• Wired wall controller call for fan operation (On or Off).
After thermostat has been satisfied and call for heating
or cooling has been removed, indoor fan remains on for
additional 60 seconds increasing efficiency by pulling
unit’s remaining energy.
Cooling Operation
Optional wired wall control controls call for cooling
operation (On or Off).
1.
After controller is connected, place system switch in
Cooling mode.
2.
Adjust setpoint temperature below room temperature.
3.
Compressor and fan motors start and cooling begins.
4.
Place setpoint temperature above room temperature.
Outdoor condenser stops.
5.
See Fan Operation pg. 39.
Once cooling has cycled off or following power outage,
compressor will not restart for at least three minutes (anti-
short-cycle timer).
Reversing Valve
EMI outdoor heat pump unit’s reversing valve is energized
in Cooling mode.
electric Heat Operation
Without
Heat Pump -
Optional
Optional wired wall controller controls call for electric heat
operation (On or Off).
1.
After connecting controller to unit, place system switch
in Heating mode.
2.
Adjust setpoint temperature above room temperature.
3.
Electric heat energizes with indoor fan motor.
4.
Heating continues as long as the setpoint remains
above room temperature.
5.
Place set-point temperature below room temperature.
6.
Electric heater switches Off and indoor fan remains on
for additional sixty (60) seconds.
Once cooling has cycled off or following power outage,
compressor will not restart for at least three minutes (anti-
short-cycle timer).
