Z-200-HC-MS Installation and Operation Instructions
2 Heat / 2 Cool - Auto Changeover - First Call Priority - Time Share
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Zone Control Made Simple
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Sequence of Operation:
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he Green Zone™ Z-200-HC-MS is a residential /
light commercial zone control system that allows
a single HVAC unit to have up to two separate
zones. Each zone is controlled by its own space
thermostat and motorized zone damper. If a zone
thermostat calls for heating or cooling, the zone
not calling will have its damper powered closed,
and the zone calling will have its damper opened.
The heating or cooling equipment will also be
brought on at the same time. When the zone
calling is satisfied, the heating or cooling
equipment turns off. If one zone calls for heating
and another zone calls for cooling, the first zone to
call receives priority. When the first call is
satisfied, the system will changeover and take
care of the opposite call. If a zone being served
(heating or cooling) has not been satisfied within
20 minutes and an opposite call takes place, the
system will changeover. When the zone is
satisfied or 20 minutes has gone by, the system
will again changeover if an opposite call exists.
This is referred to as Auto Changeover - First Call
Priority - Time Share. In the event of a tie, cooling
will receive priority.
High and Low Limit Protection:
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he Z-200-DAS Discharge Air Sensor should be
mounted on the discharge air plenum of the
HVAC unit and wired to the DAS terminals on the
panel. If the heating temperature rises above
170° F or if the cooling temperature falls below
45° F, the sensor will cycle the equipment, while
the fan continues to run. When the system goes
out on low limit a 3 minute time delay is activated
before cooling is allowed to energize (providing
the discharge air temperature has risen above
45° F). LIMIT LED blinks when high or low limit is
reached.
Ventilation Mode:
Power Requirements:
Wiring:
Zone ventilation is established by the individual
zone thermostat fan setting. Any thermostat set
in the fan AUTO mode will not receive ventilation
air when no equipment calls are taking place.
Any thermostat set in the fan ON mode will
receive ventilation air whenever there are no
heating or cooling calls taking place.
The Z-200 requires a separate 24 Vac
transformer. A 40 VA transformer will power the
panel and up to four (4) dampers. A 75 VA
transformer will power the panel and up to six (6)
dampers. If more than three (3) dampers for an
individual zone are required, a RY-1-HB relay
should be used with an additional properly sized
transformer. Jackson Systems HD-XXXX
rectangular and D-XX round dampers are
powered closed/spring return open. Damper
actuators are rated at 10 VA.
All wiring is done using conventional 18 gauge
thermostat wire. Thermostats and zone dampers
may be located up to 300 feet from the Z-200
panel.
Z NE
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Zone Control Made Simple
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