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COOLING OPERATION (ALL MODELS OF EQUIPMENT)
1. Set your Model 8570 programmable thermostat to the Cool mode. This is accomplished by selecting COOL from the
Mode Menu. Consult your thermostat Owner’s Manual for details.
2. Adjust the thermostat set point to a temperature lower than the displayed room temperature, using the Down button, so that
a Cool call is initiated. Again, consult your thermostat Owner’s Manual for details on how to do this properly.
An LED labeled “COOL”, on the zone panel enclosure will indicate if the board is making a call for cooling. If your air conditioning
does not come on right away it may be due to the minimum-off time delay. Four minutes must elapse after the last air conditioner
cycle before it can come on again. This built-in feature ensures that the air conditioner does not cycle too frequently, which can
reduce the life of your equipment.
EMERGENCY HEAT OPERATION (Heat Pump Equipment ONLY)
Emergency Heat operation is also available if you have a heat pump and the zone panel was set up for heat pump operation
during the initial installation performed by your installer.
The Model 8570 thermostat can initiate the emergency heat mode. This is accomplished by selecting EMERGENCY HEAT from the
Mode Menu. Consult your thermostat Owner’s Manual for details.
Then, by placing the thermostat’s set point above the current temperature, Emergency Heat will energize until the thermostat is
satisfied. If any other zone should call for heat during the Emergency Heat call, it too will be satisfied by the Emergency Heat source.
NOTE: Emergency Heat is generally much more expensive to operate than the Heat Pump. Use only when necessary.
Your equipment may not include Emergency Heat.
DAMPER OPERATION
When the Aprilaire Intelligent Zoned Comfort Control Panel receives a call and turns on the appropriate equipment, it also
automatically closes the dampers that serve the non-calling zones and opens those in the calling zones. When all calls are
satisfied, the Control Panel initiates a purge cycle. During the purge cycle, the dampers maintain their last position to direct air to
the zone(s) that were calling, not affecting non-calling zones. After this purge cycle, all dampers open.
An LED on the zone panel enclosure will indicate if the damper for a zone is closed.
FAN OPERATION
The Aprilaire Intelligent Zoned Comfort Control Panel allows you to control fan operation from any zone. Dampers in zones not
calling for fan will close. If continuous fan operation is desired in all zones, the fan must be on in each zone. An LED labeled
“FAN ON”, on the zone panel enclosure will indicate if the HVAC fan is on. This can be done by selecting “ON” from the Fan
Menu on the thermostat and then selecting “YES” when prompted to “CHANGE ALL THERMOSTATS”.
