ForestAir E-Tech Series - Installation in Unconditioned Spaces; 4.0 ELECTRICAL WIRING

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© Copyright, Sunrise Tradex Corp., 2018
Installation Manual
WARNING
Horizontal units must be congured for right or left air supply. Horizontal drain pan must be
placed under indoor coil. Failure to use the drain pan can result in property damage.
WARNING
Disconnect all power to the unit before installing or servicing. More than one disconnect
switch may be required to discharge the equipment. Hazardous voltage can cause severe
personal injury or death.
Conversion in Horizontal Direction: Horizontal right air supply can be changed to horizontal
left air supply by removing the indoor coil and reinstalling 180° from original position.
3.4 INSTALLATION IN AN UNCONDITIONED SPACE
IMPORTANT : There are two pairs of coil rails in the air handler for default and counter ow
application. If the air handler is installed in an unconditioned space, the two unused coil rails
should be removed to minimize air handler surface sweating. The coil rails can be easily
removed by taking off the 6 mounting screws from both sides of the cabinet.
4.0 ELECTRICAL WIRING
Field wiring must comply with the National Electric Code (C.E.C. in Canada) and any applicable
local ordinance.
4.1 POWER WIRING
It is important that proper electrical power is available for connection to the unit model
being installed. See the unit nameplate, wiring diagram and electrical data in the installation
instructions.
▪ If required, install a branch circuit disconnect of adequate size, located within sight of, and
readily accessible to the unit.
▪ IMPORTANT : After the electric heater is installed, units may be equipped with one or two
30-60 amp circuit breakers. These breakers protect the internal wiring in the event of a short
circuit and serve as a disconnect. Circuit breakers installed within the unit do not provide
over-current protection of the supply wiring and therefore may be sized larger than the branch
circuit protection.
▪ Supply circuit power wiring must be 75. See Electrical Data in this section for ampacity, wire
size and circuit protector requirement. Supply circuit protective devices may be either fuses or
“HACR” type circuit breakers.
▪ Power wiring may be connected to either the right or left side, or top. Three concentric
knockouts are provided for connection of power wiring to the unit.
▪ Power wiring is connected to the power terminal block in the unit cabinet.