Bryant R-22 561G - Manual (Page 3)

CAUTION: UNIT DAMAGE HAZARD
Failure to follow this caution may result in unit compo-
nent damage. To avoid equipment damage and/or loss of
performance remove indoor-coil piston if unit is to be
installed on system with a TXV-metering device.
Check outdoor unit piston. Remove retainer on liquid service valve
and check piston size with matching number listed on outdoor unit
rating plate.
VII. MAKE REFRIGERANT PIPING CONNECTIONS
Outdoor units may be connected to indoor section using accessory
tubing package or field-supplied refrigerant-grade tubing of cor-
rect size and condition. For tubing requirements beyond 80 ft,
consult
Residential Split System Long-Line Application
Guideline—Air Conditioners and Heat Pumps Using R-22 Refrig-
erant. Connect tubing to fittings on outdoor unit vapor and liquid
service lines.
(See Table 1.)
If refrigerant tubes or the indoor coil are exposed to atmospheric
conditions for longer than 5 minutes they must be evacuated to 500
microns to eliminate contamination and moisture in system.
A. OUTDOOR UNIT CONNECTED TO FACTORY-
APPROVED INDOOR UNIT
Outdoor unit contains correct system-refrigerant charge for opera-
tion with indoor unit of same size when connected by 15 ft of
field-supplied or factory accessory tubing. Check refrigerant
charge for maximum efficiency.
B. SWEAT CONNECTION
CAUTION: UNIT DAMAGE HAZARD
Failure to follow this caution may result in unit compo-
nent damage. To avoid valve damage while brazing,
service valves must be wrapped in a heat sink material,
such as a wet cloth.
Use refrigerant grade tubing. Service valves are closed from
factory and ready for brazing. After wrapping service valve with a
wet cloth, tubing set can be brazed to service valve using industry
accepted methods and materials. Consult local code requirements.
Refrigerant tubing and indoor coil are now ready for leak testing.
This check should include all field and factory joints.
VIII. MAKE ELECTRICAL CONNECTIONS
WARNING: ELECTRICAL SHOCK AND EXPLO-
SION HAZARD
Failure to follow this warning could result in personal
injury, death and or property damage. Do not supply
power to unit with compressor terminal-box cover re-
moved.
Be sure field wiring complies with local and national fire, safety,
and electrical codes, and voltage to system is within limits shown
on unit-rating plate. Contact local power company for correction of
improper voltage. See unit rating plate for recommended circuit
protection device.
NOTE: Operation of unit on improper line voltage constitutes
abuse and could affect unit reliability. See unit-rating plate. Do not
install unit in system where voltage or phase imbalance (3 phase)
may fluctuate above or below permissible limits.
NOTE: Use copper wire only between disconnect switch and
unit.
NOTE: Install branch-circuit disconnect of adequate size per
NEC to handle unit-starting current. Locate disconnect within sight
from and readily accessible from unit, per Section 440-14 of NEC.
A. ROUTE GROUND AND POWER WIRES
Remove access panel to gain access to unit wiring. Extend wires
from disconnect through power wiring hole provided and into
unit-control box.
WARNING: ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury and or death. The unit cabinet must have an
uninterrupted or unbroken ground to minimize personal
injury if an electrical fault should occur. The ground may
consist of electrical wire or metal conduit when installed
in accordance with existing electrical codes.
B. CONNECT GROUND AND POWER WIRES
Connect ground wire to ground connection in control box for
safety. Connect power wiring to contactor as shown in Fig. 4.
C. CONNECT CONTROL WIRING
Route 24v control wires through control wiring grommet and
connect leads to control wiring. (See Fig. 6.)
Use No. 18 AWG color-coded, insulated (35°C minimum) wire. If
thermostat is located more than 100 ft from unit, as measured
along the control voltage wires, use No. 16 AWG color-coded wire
to avoid excessive voltage drop.
TABLE 1—REFRIGERANT CONNECTIONS AND RECOMMENDED LIQUID- AND VAPOR-TUBE DIAMETERS (IN.)
UNIT
SIZE
LIQUID RATED VAPOR (UP TO 80 FT 1 )
Connection Diameter Tube Diameter Connection Diameter Tube Diameter
030, 036 3/8 3/8 3/4 3/4
042-048 3/8 3/8 7/8 7/8
060 3/8 3/8 7/8 1-1/8
NOTES:
1.
Tube diameters are for lengths up to 80 ft horizontal or 20 ft vertical differential. For tubing lengths greater than 80 ft, consult Residenital Split System Long-Line
Application Guidelines—Air Conditioners and Heat Pumps Using R-22 Refrigerant. Maximum liquid lines 3/8 in., including long-line applications.
2. Do not apply capillary-tube indoor coils to these units.
Fig. 4—Line Power Connections
A94025
DISCONNECT
PER N.E.C. AND/OR
LOCAL CODES
CONTACTOR
GROUND
LUG
FIELD GROUND
WIRING
FIELD POWER
WIRING
BLUE 3 PHASE ONLY
—3—