950-0211revA - 10 - March 7, 2014
Installation (CONT’D).
If a flared section is defective, cut it off and follow standard flaring procedures again.
See caution note page 5.
Align the center of the piping flare to its’ mating connector, then screw on the
flare nut by hand and then tighten the nut with a spanner and torque wrench.
Note
: Exceeding the tightening torque will damage the flare surface.
Step 9
Evacuation
Gauges can now be attached to the service port -
SERVICE PORTS HAVE A 1/4
” CONNECTION TO
GAUGES.
Use caution to ensure that the proper size fittings are
used when connecting.
Once the gauges are attached the line set can be leak
checked using nitrogen at 300 PSIG. Evacuate the unit
down to a minimum of 500 Microns, break vacuum with nitrogen to further leak check.
Re-evacuate the system down to 500 Microns or lower. This is an R410A system, it is essential that a deep
vacuum be pulled on the system to remove all traces of moisture. (See page 23 for The Importance of a Deep
Vacuum).
Step 10
DANGER
MAIN POWER WIRING: ELECTRICAL WIRING SHOULD BE DONE BY A LICENSED ELECTRICIAN IN
ACCORDANCE WITH NATIONAL AND LOCAL CODES.
Tip: Small electrical screwdriver is required for unit terminals. Breaker size and wiring must be sized for
the rating plate amperage. If a smaller than required breaker is used there is a possibility of unit damage. Use
breaker as specified in Specifications Table page 15 to page 19.
Each system installed must have a separate branch circuit with an individual breaker/fuse. A local disconnect
should be installed adjacent to the outdoor unit in accordance with National and Local Electrical Codes. The
outdoor unit provides power for the indoor unit therefore, no disconnect is required between the outdoor and
indoor units.
Line voltage from the disconnect should be wired to:
N - L
– Ground screw (115V Unit)
L1 - L2
– Ground screw (208/230V Unit).
Remove right side knockout on the terminal access panel for whip/wiring connection. Ground connection must
be made to the terminal plate.
Tip: For easier access to the terminals in the outdoor unit remove the lower access panel to install whip
and Seal Tite connectors for conduit.
Step 11
CONTROLS WIRING
USE A MINIMUM 16 AWG WIRE.
Remove terminal covers from Indoor unit and wire to the terminals. A small electrical screwdriver required.
Control wiring from the outdoor unit must be a point to point; i.e. the terminal that the wire is attached to on the
outdoor unit must be the same terminal it is wired to in on the Indoor unit.
***
DO NOT CROSS WIRES BETWEEN TERMINALS. ***
THIS IS EXTREMELY IMPORTANT!
Miswiring (cross connecting wires) between the indoor unit and outdoor unit will cause the unit to fail to operate
at a minimum, and can seriously damage the unit in the worst case. Use extreme care to ensure that wiring
between the inside unit and the outside unit is per the wiring diagrams on the next pages.
Ground wires connected to the terminal plate indoor and outdoor units must be grounded.
Tightening Torque Table
1/4
”
11-15
Ft-lbs
3/8
”
25-30
Ft-lbs
1/2
”
36-42
”
Ft-lbs
5/8
”
54-58
Ft-lbs
