user manual

13
VIX. WIRING
NOTE: Field wiring must comply with the National Electric Code (CEC in Canada) and
any local ordinance that may apply.
X. ELECTRICAL POWER
It is important that proper electrical power is available at the unit. Voltage must not vary
more than 10% of that stamped on the rating plate. (See Electrical Data Table for mini-
mum and maximum voltage.) Interphase voltage variation on three-phase units must not
be more than 3%. Contact local power company for correction of improper voltage or
phase unbalance.
IMPORTANT: Models equipped with scroll compressors must be phased correctly for
proper compressor rotation. If the compressor is noisy or if suction and discharge pres-
sures do not appear normal, reverse any two power leads to the unit. Extended run time in
reverse rotation will damage the compressor and lead to premature failure.
XI. POWER WIRING
Power wiring must be run in grounded rain-tight conduit. Power wiring must comply with
the National Electric Code (C.E.C. in Canada) and any applicable local code.
XII. WIRE ROUTING
POWER WIRING MUST BE RUN IN CONDUIT. Conduit must be run through the con-
nector panel below the service cover and attached to the bottom of the control box.
If low (extra-low in Canada) voltage control wire is run in conduit with power supply,
Class I insulation is required. If run separate, Class II is required. Low voltage wiring
may be run through the insulated bushing provided in the 7/8 " hole in the connector
panel then routed to the control box.
XIII. GROUNDING
A grounding lug is provided in control box for a ground wire.
Grounding may be accomplished by grounding the power line conduit to the unit.
XIV. THERMOSTAT — 6
1
⁄2 AND 7
1
⁄2 TON
A single-stage cooling, two-stage heating (if heating is used) thermostat should be
mounted on an inside wall about four to five feet above the floor in a location where it will
not be affected by the sun or drafts, from open doors or other sources. Install, level, and
after installation check the thermostat calibration and recalibrate if necessary.
XV. LEAK TESTING
Pressure line set and coil through service fittings with dry nitrogen to 150 psig maximum.
Leak test all joints using liquid detergent. If a leak is found, relieve pressure, repair and
retest.
!
WARNING
THIS UNIT MUST BE PERMA-
NENTLY GROUNDED. A GROUND
LUG IS PROVIDED NEAR THE
CONTACTOR FOR A GROUND
WIRE. FAILURE TO DO SO CAN
CAUSE A FIRE OR ELECTRICAL
SHOCK RESULTING IN PROPER-
TY DAMAGE, SEVERE PERSON-
AL INJURY OR DEATH.
!
WARNING
AFTER COMPLETION OF WIRING CHECK ALL ELECTRICAL CONNEC-
TIONS, INCLUDING FACTORY WIRING WITHIN THE UNIT, AND MAKE
SURE ALL CONNECTIONS ARE TIGHT, REPLACE AND SECURE ALL
ELECTRICAL BOX COVERS AND ACCESS DOORS BEFORE LEAVING
UNIT OR TURNING ON POWER TO CIRCUIT SUPPLY UNIT. FAILURE TO
DO SO CAN CAUSE A FIRE OR ELECTRICAL SHOCK RESULTING IN
PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.