Aprilaire 6404 ユーザーズマニュアル

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Emergency Heat Operation
(Heat Pump Equipment only)
There are two options available for operation of Emergency Heat.
The option used with your system is dependent upon the initial
installation performed by your installer.
Option 1- If  heat pump thermostats were installed in all zones,
they are equipped with an Emergency Heat setting that can
initiate the emergency heat mode. This is accomplished by
moving the thermostat mode selector switch or push button until
the Emergency Heat mode is chosen. 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.
Option 2- If Heat/Cool (non heat pump) thermostats were installed
in all zones, emergency heat can only be accessed by setting the
Emergency Heat switch, located on the Control Panel, to the
emergency heat position. Then, by placing any thermostat’s set
point above the current temperature while in the heat mode,
Emergency Heat will energize until the thermostat is satisfied. The
accompanying ‘E- Heat’ LED on the control panel enclosure
signifies you are in Emergency Heat mode.
With this option the system will stay in the emergency heat mode
until this switch is turned to off.
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 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 which time the dampers
maintain their last position. After this purge cycle, all dampers
open.
An LED on the zone panel enclosure will indicate if the damper  for
a zone is closed. The LED’s labeled Z1 through Z4 Damper,
indicate a closed damper in Zone 1, Zone 2, Zone 3, and Zone 4
respectively. On the expansion panel, dampers are labeled
Expansion Zone 1 Damper Closed and Expansion Zone 2
Damper Closed.
Fan Operation 
The Aprilaire 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
turned on at the thermostat in each zone. An LED labeled “Fan On”,
on the zone panel enclosure will indicate if the HVAC fan is on.
HUM Operation 
The Aprilaire Control Panel offers the ability to turn on a humidifier
in conjunction with a humidistat. When the HUM LED is lit the
humidifier may operate depending on the humidistat setting.
EAC Operation 
The Aprilaire Control Panel has functionality built in to turn on a
properly equipped Aprilaire Electronic Air Cleaner which will be
available at a later date.
Vacation Setting 
If leaving the home for an extended period of time, set the Zone 1
thermostat to “set back” temperature to save energy. Then move
the ‘Vacation’ Switch, located on the Aprilaire Control Panel, to the
‘On’ position. The system will then be controlled by the Zone 1
thermostat only. This prevents having to adjust all thermostats
twice, when leaving and upon return. It is not recommended to
turn off all thermostats for extended periods in climates where
freezing temperatures may occur.
Turning the System Off 
In order to shut off the system and prevent the Aprilaire Control
Panel from turning on your equipment, you need to set ALL of
your thermostats to the OFF mode. 
Depending on your
thermostats, this is done manually with a slide switch on your
thermostat’s sub-base or with a digital push button. Consult the
Owner’s Manual for your particular thermostat.