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. Ask you installer to circle
which option your LZP-4 Zone control panel has been set for.
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 Zone Control
Panel, to the ON 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 Lennox Zone LZP-4 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.
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