Installation Instructions Comfort Bridge Models

33
WARNING
HIgH Voltage!
to aVoID Personal InjurY or DeatH
Due to electrIcal sHock, DIsconnect
electrIcal Power Before serVIcIng or
cHangIng anY electrIcal wIrIng.
CAUTION
laBel all wIres PrIor to DIsconnectIon wHen
serVIcIng controls. wIrIng errors can cause
IMProPer anD Dangerous oPeratIon. VerIfY
ProPer oPeratIon after serVIcIng.
wIrIng Harness
The wiring harness is an integral part of this furnace. Field
alteration to comply with electrical codes should not be
required. Wires are color coded for identication purposes.
Refer to the wiring diagram for wire routings. If any of
the original wire as supplied with the furnace must be
replaced, it must be replaced with wiring material having
a temperature rating of at least 105° C. Any replacement
wiring must be a copper conductor.
115 Volt lIne connectIons
Before proceeding with electrical connections, ensure that
the supply voltage, frequency, and phase correspond to
that specied on the unit rating plate. Power supply to
the furnace must be NEC Class 1, and must comply with
all applicable codes. The furnace must be electrically
grounded in accordance with local codes or, in their
absence, with the latest edition of The National Electric
Code, ANSI NFPA 70 and/or The Canadian Electric Code
CSA C22.1.
Use a separate fused branch electrical circuit containing
properly sized wire, and fuse or circuit breaker. The fuse
or circuit breaker must be sized in accordance with the
maximum overcurrent protection specied on the unit
rating plate. An electrical disconnect must be provided at
the furnace location.
Connect hot, neutral, and ground wires as shown in the
wiring diagram located on the unit’s blower door.
locatIons.
FILTER
AIR FLOW
CENTRAL
RETURN
GRILLE
FILTER
SIDE RETURN
EXTERNAL FILTER
RACK KIT
(EITHER SIDE)
PossIBle uPrIgHt uPflow
fIgure 44
AIR FLOW
CENTRAL
RETURN
GRILLE
FILTER
SUPPORT
BRACKET
(Field Supplied)
PossIBle uPrIgHt counterflow fIlter locatIons
fIgure 45
ElEctrical connEctions
WARNING
HIgH Voltage!
to aVoID tHe rIsk of electrIcal sHock,
wIrIng to tHe unIt Must Be PolarIZeD
anD grounDeD.