Installation Guide

2
Another important consideration in selecting a location for the
unit(s) is the angle to obstructions. Either side adjacent the
valves can be placed toward the structure provided the side
away from the structure maintains minimum service clearance.
Corner installations are strongly discouraged.
OK!
OK!
AA AAA
A
CC
C
C
OK!
OK!
OK!
OK!
NOT
RECOMMENDED
AA
AA
AA
AA
AA
B B B
B
Model Type A B C AA
Residential
10" 10" 18" 20"
Light Commercial
12" 12" 18" 24"
Minimum Airflow Clearance
This unit can be located at ground floor level or on flat roofs.
At ground floor level, the unit must be on a solid, level founda-
tion that will not shift or settle. To reduce the possibility of
sound transmission, the foundation slab should not be in con-
tact with or be an integral part of the building foundation. En-
sure the foundation is sufficient to support the unit. A con-
crete slab raised above ground level provides a suitable base.
Rooftop Installations
If it is necessary to install this unit on a roof structure, ensure
the roof structure can support the weight and that proper con-
sideration is given to the weather-tight integrity of the roof. Since
the unit can vibrate during operation, sound vibration transmis-
sion should be considered when installing the unit. Vibration
absorbing pads or springs can be installed between the con-
densing unit legs or frame and the roof mounting assembly to
reduce noise vibration.
To avoid possible injury, explosion or death, practice
safe handling of refrigerants.
Safe Refrigerant Handling
While these items will not cover every conceivable situation,
they should serve as a useful guide.
Refrigerants are heavier than air. They can "push out"
the oxygen in your lungs or in any enclosed space. To
avoid possible difficulty in breathing or death:
Never purge refrigerant into an enclosed room or
space. By law, all refrigerants must be reclaimed.
If an indoor leak is suspected, thoroughly ventilate the
area before beginning work.
• Liquid refrigerant can be very cold. To avoid possible
frostbite or blindness, avoid contact and wear gloves
and goggles. If liquid refrigerant does contact your
skin or eyes, seek medical help immediately.
• Always follow EPA regulations. Never burn refrigerant,
as poisonous gas will be produced.
•
•
To avoid possible explosion:
Never apply flame or steam to a refrigerant cylinder.
If you must heat a cylinder for faster charging,
partially immerse it in warm water.
Never fill a cylinder more than 80% full of liquid re-
frigerant.
• Never add anything other than R-22 to an R-22 cy-
linder or R-410A to an R-410A cylinder. The service
equipment used must be listed or certified for the
type of refrigerant used.
• Store cylinders in a cool, dry place. Never use a cy-
linder as a platform or a roller.
•
•
To avoid possible explosion, use only returnable (not
disposable) service cylinders when removing refrig-
erant from a system.
lead to a leak or explosion.
• Ensure the hydrostatic test date does not exceed
5 years.
• Ensure the pressure rating meets or exceeds 400
psig.
When in doubt, do not use cylinder.
• Ensure the cylinder is free of damage which could
Refrigerant Lines
The compressor POE oil for R-410A units is extremely
susceptible to moisture absorption and could cause
compressor failure. Do not leave system open to atmos-
phere any longer than necessary for installation.
CAUTION
Use only refrigerant grade (dehydrated and sealed) copper
tubing to connect the condensing unit with the indoor evapo-
rator. After cutting the tubing, install plugs to keep refrigerant
tubing clean and dry prior to and during installation. Tubing
should always be cut square keeping ends round and free
from burrs. Clean the tubing to prevent contamination.