Electrical Wiring - Payne PA3A Installation Instructions Manual

I. OPENING SERVICE VALVES
Outdoor units are shipped with a refrigerant charge sealed in the
unit. Opening the service valves releases this charge into the
system.
NOTE: Open the Suction service valve first. If the Liquid service
valve is opened first, oil from the compressor may be drawn into
the indoor coil TXV, restricting refrigerant flow and affecting
operation of the system.
Remove Suction service valve cap and insert a hex wrench into the
valve stem. Hold the valve body steady with an end- -wrench and
back out the stem by turning the hex wrench counterclockwise.
Turn the stem until it just contacts the rolled lip of the valve body.
After the refrigerant charge has bled into the system, open the
Liquid service valve.
NOTE: These are not back- -seating valves. It is not necessary to
force the stem tightly against the rolled lip.
The service valve cap is a primary seal for the valve and must be
properly tightened to prevent leaks. Make sure cap is clean and
apply refrigerant oil to threads and sealing surface on inside of cap.
Tighten cap finger tight and then tighten additional 1/6 of a turn (1
wrench flat) to properly seat the sealing surfaces.
J. GAUGE PORTS
Check for leaks at the schrader ports and tighten valve cores if
necessary. Install plastic caps finger tight.

ELECTRICAL WIRING

WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to turn off the main (remote) electrical disconnect
device could result in personal injury or death.
Before installing, modifying or servicing system, turn OFF
the main (remote) electrical disconnect device. There may be
more than one disconnect device.
The supply voltage must be 208/230 volts (197 volt minimum to
253 volts maximum) 60 Hz single phase.
Outdoor units are approved for use with copper conductors only.
Do not use aluminum wire.
Refer to unit rating plate for minimum circuit ampacity and circuit
protection requirements.
Grounding
Permanently ground unit in accordance with the National Electrical
Code and local codes or ordinances. Use a copper conductor of the
correct size from the grounding lug in control box to a grounded
connection in the service panel or a properly driven and electrically
grounded ground rod.
Wiring Connections
Make all outdoor electrical supply (Line Voltage) connections with
rain- -tight conduit and fittings. Most codes require a disconnect
switch outdoors within sight of the unit. Consult local codes for
special requirements.
Route electrical supply (Line Voltage) wiring through knockout
hole in bottom of Control Box. Connect wires to Contactor and
Ground Lug according to Wiring Diagram on unit. Also refer to
Fig. 5.
Route thermostat wiring through rubber grommet in bottom of
Control Box. Low voltage lead wires are provided in the control
box for connection to thermostat wires (use wire nuts). Refer to
Wiring Diagram on unit and Fig. 6 for low voltage wiring
examples.
NOTE: Use No. 18 AWG (American Wire Gage) color- -coded,
insulated (35˚C minimum) wire. If thermostat is located more than
100 feet (30.5 m) from unit as measured along the control voltage
wires, use No. 16 AWG color- -coded wires to avoid excessive
voltage drop.
DISCONNECT
PER N. E. C. AND/OR
LOCAL CODES
FIELD POWER
WIRING
FIELD GROUND
WIRING
Fig. 5 --- Electrical Supply (Line Voltage) Connections
THERMOSTAT
24 VAC HOT
R
C
24 VAC COM
W/W1
HEAT STAGE 1
Y/Y2
COOL STAGE 1
G
INDOOR FAN
THERMOSTAT
24 VAC HOT
R
24 VAC COM C
W/W1
HEAT STAGE 1
Y/Y2
COOL STAGE 1
G
INDOOR FAN
Fig. 6 --- Typical Thermostat Connections
START- -UP PROCEDURE
1. Set indoor thermostat selector switch to OFF.
2. Turn ON all electrical disconnect devices.
3. If unit has a crankcase heater, energize the heater and wait
24 hours before proceeding.
4. Set indoor thermostat at desired temperature.
setpoint is below indoor ambient temperature or thermostat
will not call for cooling.
5. Set indoor thermostat selector switch to COOL. Operate
unit for minimum 10 minutes, then check the system
refrigerant charge.
5
CONTACTOR
GROUND
LUG
A91056
FURNACE AIR CONDITIONER
R
C
C
W
Y
G
FAN COIL AIR CONDITIONER
R
C
C
W2
Y
G
A07592
Be sure