Filter
Top Products
—7—
V. STEP 5 — MAKE ELECTRICAL CONNECTIONS
A. Field Power Supply
All units except 208/230-v units are factory-wired for the
voltage shown on the unit nameplate. If the 208/230-v unit is
to be connected to a 208-v power supply, the transformer
must be rewired by disconnecting the black wire from the
230-v terminal wire on the transformer and connecting it to
the 200-v red terminal of the transformer. The end of the
orange wire must then be insulated.
Refer to unit label diagram for additional information.
Pigtails are provided for field wire connections. Use factory-
supplied splices or UL (Underwriters’ Laboratories)
approved copper/aluminum connector.
When installing units, provide a disconnect per the NEC.
All field wiring must comply with the NEC and local require-
ments. In Canada, electrical connections must be made in
accordance with CSA (Canadian Standards Association)
C22.1 Canadian Electrical Code Part One.
Install field wiring as follows:
1. Install conduit through side panel openings. For units
without electric heat, install conduit between discon-
nect and control box.
2. Install power lines to terminal connections as shown
in Fig. 8.
3. For units with electric heat, refer to Accessory Instal-
lation Instructions.
During operation, voltage to compressor terminals must be
within range indicated on unit nameplate (see Table 2). On
3-phase units, voltages between phases must be balanced
within 2%, and the current within 10%. Use the formula
shown in Table 2, Note 2 on page 10 to determine the per-
centage of voltage imbalance. Operation on improper line
voltage or excessive phase imbalance constitutes abuse and
may cause damage to electrical components. Such operation
would invalidate any applicable Bryant warranty.
See Table 3 for electric heater and single point box usage.
WARNING: Unit cabinet must have an uninter-
rupted, unbroken electrical ground to minimize the
possibility of personal injury if an electrical fault
should occur. This ground may consist of electrical wire
connected to unit ground lug in control compartment,
or conduit approved for electrical ground when
installed in accordance with NEC (National Electrical
Code) ANSI (American National Standards Institute) /
NFPA (National Fire Protection Association) 70-latest
year and local electrical codes. Failure to follow this
warning could result in the installer being liable for
personal injury of others.
LEGEND
C—Contactor
COMP(S) — Compressor
IFC — Indoor (Evaporator) Fan Contactor
NEC — National Electrical Code
OFC — Outdoor (Condenser) Fan Contactor
TB — Terminal Block
Terminal Block Connection
Field Wiring
Factory Wiring
Splice Connection
(Factory-Supplied)
551B090-120, 208/230-3-60
551B090-150, 460-3-60
551B150, 208/230-3-60
Fig. 8 — Power Wiring Connections
551B090-150, 575-3-60