Specifications

3
SAFE REFRIGERANT HANDLING
While these items will not cover every conceivable situation, they should serve as a useful guide.
REFRIGERANT LINES
Use only refrigerant-grade (dehydrated and sealed) copper
tubing to connect the heat pump with the indoor evaporator. 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 the ends round and free from burrs. Clean
the tubing to prevent contamination.
NOTE: Do not let the refrigerant lines come in direct contact with
plumbing, ductwork, floor joists, wall studs, floors and walls.
When running refrigerant lines through a foundation or wall,
openings should allow for sound and vibration absorbing material
to be placed or installed between tubing and foundation. Any gap
between the foundation or wall and refrigerant lines should be
filled with a pliable silicon-based caulk, RTV or a vibration
damping material. Avoid suspending refrigerant tubing from joists
and studs with rigid wire or straps that would come in contact
with the tubing. Use an insulated or suspension-type hanger.
Keep both lines separate and always insulate the suction line.
These sizes are recommended for line lengths of 79 ft (24 m) or
less to obtain optimum performance. For alternate line sizing
options or runs of more than 79 ft (24 m), refer to Remote Cooling
Service Manual, TP-107 Long Line Set Application R- 410A or
contact your distributor for assistance.
*For lines greater than 79 ft (24 m) in length or vertical elevation
changes more than 50 ft (15 m), refer to the Remote Cooling
Service Manual or contact your distributor for assistance.
Mounting the evaporator coil above the heat pump will require an
inverted loop in the suction line adjacent or near the connection
to the evaporator coil. The top of the loop must be slightly higher
than the top of the evaporator coil.
Goodman 12
WARNING
To avoid possible injury, explosion or death, practice safe
handling of refrigerants.
Goodman 13
WARNING
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, throughly 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.
Goodman 14
WARNING
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
refrigerant.
• Never add anything other than R-22 to an R-22 cylinder
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 cylinder
as a platform or a roller.
Goodman 15
WARNING
To avoid possible explosion, use only returnable (not
disposable) service cylinders when removing refrigerant
from a system.
• Ensure the cylinder is free of damage which could lead
to a leak or explosion.
• Ensure the hydrostatic test date does not exceed 5 years.
• Ensure the pressure rating meets or exceeds 400 lbs.
When in doubt, do not use cylinder.
Goodman 16
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
atmosphere any longer than necessary for installation.
CAUTION
Recommended Interconnecting Tubing—ft (m)
0 to 24
(7)
25 to 49
(8 to 15)
50 to 79
(15 to 24)*
Conditioner Line Diameter (in. OD)
Unit Tons Suction Liquid Suction Liquid Suction Liquid
1¹⁄₂ ⁵⁄₈ ¹⁄₄ ³⁄₄ ³⁄₈ ³⁄₄ ³⁄₈
2 ⁵⁄₈ ¹⁄₄ ³⁄₄ ³⁄₈ ³⁄₄ ³⁄₈
2¹⁄₂ ⁵⁄₈ ¹⁄₄ ³⁄₄ ³⁄₈ ⁷⁄₈ ³⁄₈
3 ³⁄₄ ³⁄₈ ⁷⁄₈ ³⁄₈ 1¹⁄₈ ³⁄₈
3¹⁄₂ ⁷⁄₈ ³⁄₈ 1¹⁄₈ ³⁄₈ 1¹⁄₈ ³⁄₈
4 ⁷⁄₈ ³⁄₈ 1¹⁄₈ ³⁄₈ 1¹⁄₈ ³⁄₈
5 ⁷⁄₈ ³⁄₈ 1¹⁄₈ ³⁄₈ 1¹⁄₈ ³⁄₈