Optional Heater Installation - DoorKing 1837 Owner's Manual

1.10 OPTIONAL Heater Installation

Install OPTIONAL heater as shown (P/N 2600-584). For cold weather climates where temperatures routinely drop below 40°F
(4°C). The thermostat will automatically control the temperature inside operator housing.
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Attach the heater in the center of
the faceplate. Built-in magnets
will secure heater in place.
The heater gets VERY HOT, DO NOT allow
existing components or wires to come in
contact with the metal heater housing.
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Attach the thermostat on the bottom inside of the
cabinet as far from heater as possible. DO NOT
position the thermostat right next to the heater.
Built-in magnets will secure thermostat in place.
Thermostat will automatically turn heater on at
approximately 40°F (4°C) and off at 55°F (12°C).
Wire polarity
does not matter
Up to 100 feet, use 18 AWG - 600 volt insulated wire.
Up to 200 feet, use 16 AWG - 600 volt insulated wire.
DO NOT run heater power wires over 200 feet or use
smaller wire than specified. Route wires to avoid
contact with the resistors on the telephone entry
system control board.
Important:
heater with the telephone entry
system's 16.5 VAC 20 VA power
transformers.
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4 0
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Note: Transformer is for indoor use
and MUST be in a protected enclosure
from weather when using outdoors.
DO NOT power the
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