Installation Instructions

8
OUTDOOR UNIT INSTALLATION
1. Use a rigid base to support the unit in a level position.
2. Locate the outdoor unit and connect the piping and wiring.
CAUTION
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage
or improper operation.
In regions with snowfall and cold temperatures, avoid
installing the outdoor unit in areas where it can be covered by
snow. If the outdoor unit is installed in areas where heavy
snow is expected, a field supplied ice or snow stand and/or
field supplied−installed wind baffle should be installed to
protect the unit from snow accumulation and/or blocked air
intake. Blocking the air intake may result in reduced airflow,
significantly reduced performance and damage to the
equipment.
Strong
wind
A07350
Fig. 11 - High Wind Installation
MAKE REFRIGERANT PIPING CONNECTIONS
(OUTDOOR UNIT)
IMPORTANT: Use refrigeration grade tubing ONLY. No other
type of tubing may be used. Use of other types of tubing will
void manufacturer’s warranty.
Do not open service valves or remove protective caps from
tubing
ends until all the connections are made.
Bend tubing with bending tools to avoid kinks and flat spots.
Keep the tubing free of dirt, sand, moisture, and other
contaminants
to avoid damaging the refrigerant system.
Avoid sags in the suction line to prevent the formation of oil
traps.
Insulate each tube with minimum 3/8−in. (10 mm) wall thermal
pipe insulation.
Insert the tubing into the insulation before making
the connections to save time and improve installation quality.
1. Remove the service valve cover if provided with unit.
2. Cut the tubing with tubing cutter. Remove service
connection if provided with unit.
3. Install correct size flare nut onto tubing and make flare
connection.
4. Apply a small amount of refrigerant oil to the flare
connection on the tubing.
5. Properly align tubing in with service valve.
6. Tighten the flare nut and finish the installation using two
wrenches (see Fig. 12).
A07354
Fig. 12 - Tighten Flare Nut
CAUTION
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Excessive torque can break flare nut depending on
installation conditions.
INSTALL ALL POWER AND INTERCONNECTING
WIRING TO OUTDOOR UNITS
1. Mount the outdoor power disconnect.
2. Run power wiring from main box to disconnect per NEC
and local codes.
3. Remove the field wiring cover from the unit by loosening
screws.
4. Remove the caps on conduit panel.
5. Connect the conduit to conduit panel (see Fig.13).
6. Properly connect both the power supply and the control
lines to the terminal block per the connection diagram for
the appropriate unit capacity and voltage (see Fig. 14).
7. Ground the unit in accordance with NEC and local electrical
codes.
8. Use the lock nuts to secure the conduit.
9. Reinstall the field wiring cover.
CAUTION
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
S Be sure to comply with local codes while running wire
from indoor unit to outdoor unit.
S Every wire must be connected firmly. Loose wiring may
cause terminal to overheat or result in unit malfunction.
A fire hazard may also exist. Therefore, be sure all wiring
is tightly connected.
S No wire should be allowed to touch refrigerant tubing,
compressor or any moving parts.
S Disconnecting means must be provided and shall be
located within sight and readily accessible from the air
conditioner.
S Connecting cable with conduit shall be routed through
hole in the conduit panel.
G
Over 1.57" (40mm)
Terminal Block
Conduit panel
Conduit
Outdoor unit
A07455
Fig. 13 - Field Wiring