– 9 –
For both AZ4500 and AZ6500, once the
compressor comes on in cooling, it will pull the
room temperature down to the thermostat setting.
Fan pulsing for temperature checking after
compressor shut-off when not in class 2
mode
:
• The Zoneline will pulse the indoor fan
periodically when it is not on a remote
thermostat and set to cyclic cooling.
• The system will wait 6 minutes after the
compressor shuts off, then will pulse the
indoor fan, pulling air across the air thermistor
for a duration of 30 seconds.
•
Should the first 2-minute pulse not activate
the Zoneline, the system will continue pulsing
until cooling is needed.
• Each pulse of the fan is running at low speed,
no matter what setting the user has chosen.
Operation
Cooling
AZ4500
In the cooling mode, the
compressor, indoor fan and outdoor
fan run.
AZ6500
In the cooling mode, the
compressor, indoor fan and outdoor
fan run. The reversing valve is
energized throughout the entire
cooling cycle.
Heating
AZ4500
In the heating mode, AS4500 shall
utilize the built-in resistance heater,
running with the indoor fan at one
of two speeds determined by the
Fan Speed selection.
Room Temp
Set-point +18°F
Room Temp
ON
ON
Room Temp
Set-point
Room Temp
Set-point
1.8°F
ON
ON
Heating
Mode
Resistance heater output is not determined by
software. It is determined by hardware (power
cord amperage rating).
Temperature control in the heating mode is done
by cycling the resistance heater under control of
the room air thermistor, or the room thermostat (if
in Class 2 mode).
Whenever the room temperature is 1.8°F below
the temperature setting, the control will energize
the heating cycle and remain in operation until
the room temperature reaches the temperature
setting. At this point, the Zoneline will turn off the
heating cycle.