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Multiple Units Connected to One Remote Thermostat (2800 Series)
One remote control thermostat may be used to control multiple resistance heat Zoneline units, however the
units may not be wired direct. Since each Zoneline unit has an integral transformer, direct wiring can result
in a "bucking" or boosting" voltage condition, and is in violation of the National Electric Code. The diagram
below shows the correct wiring for such an installation through the use of fi eld supplied isolation relays.
Remote Control (Low Voltage) Wiring
One stage thermostat controlling 3 Zoneline units.
Resistance heat Zoneline 2800 series units.
(Not Applicable on Heat Pump Units.)
Field Supplied Relay Specifi cations
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