Goodman CONDENSING UNIT, Инструкция по установке и обслуживанию

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Refrigerant Lines
Insulation is necessary to prevent condensation from forming
and dropping from the suction line. Armflex
® (or satisfactory
equivalent) with 3/8” min. wall thickness is recommended. In
severe conditions (hot, high humidity areas) 1/2” insulation
may be required. Insulation must be installed in a manner
which protects tubing from damage and contamination.
Where possible, drain as much residual compressor oil from
existing systems, lines, and traps; pay close attention to low
areas where oil may collect.
NOTE: If changing refrigerant types, ensure the indoor coil
and metering device is compatible with the type of refrigerant
being used; otherwise, the indoor coil must be replaced. To
facilitate oil return to the compressor, a horizontal suction line
should be pitched (1/2” per 10’ toward the condensing unit.
Filter Drier and Sight Glass
A liquid line filter drier is factory installed. Field-install the sup-
plied sight glass/moisture indicator on the liquid line as close
as practical to the service valve.
Burying Refrigerant Lines
If burying refrigerant lines can not be avoided, use the follow-
ing checklist.
1. Insulate liquid and suction lines separately.
2. Enclose all underground portions of the refrigerant lines
in waterproof material (conduit or pipe) sealing the ends
where tubing enters/exits the enclosure.
3. If the lines must pass under or through a concrete slab,
ensure lines are adequately protected and sealed.
Refrigerant Line Connections
NOTICE
THIS UNIT IS SHIPPED WITH A NITROGEN/HELIUM
HOLDING CHARGE ONLY. UNIT MUST BE
EVACUATED AND CHARGED PER INSTALLATION
INSTRUCTIONS WITH REFRIGERANT LISTED ON
SERIAL RATING PLATE.
UNITS SHIPPED WITH A HOLDING CHARGE ARE
INTENDED FOR COMPONENT REPLACEMENT
ONLY ON EXISTING SYSTEMS, AND NOT
INTENDED FOR USE IN NEW SYSTEMS OR NEWLY
CONSTRUCTED HOMES.
NOTICE
NOTICE
UNITS MUST ONLY BE USED AS REPLACEMENT
COMPONENTS FOR PRE-2010 INSTALLED
SYSTEMS.
NOTE: Holding charge must be removed before brazing.
Open service valves slowly to remove holding charge. Close
valves before brazing to prevent contaminants from enter-
ing system.
IMPORTANT : To avoid overheating the service valve, TXV
valve, or filter drier while brazing, wrap the component
with a wet rag, or use a thermal heat trap compound as
recommended by the compound manufacturer. Use a
brazing alloy of 2% minimum silver content. Do not use
flux.
1. The ends of the refrigerant lines must be cut square,
deburred, cleaned, and be round and free from nicks
or dents. Any other condition increases the chance of
a refrigerant leak.
2. “Sweep” the refrigerant line with nitrogen or inert gas
during brazing to prevent the formation of copper-ox-
ide inside the refrigerant lines.
3. After brazing, quench the joints with water or a wet
cloth to prevent overheating of the service valve.
4. Ensure the filter drier paint finish is intact after brazing.
If the paint of the steel filter drier has been burned or
chipped, repaint or treat with a rust preventative. This
is especially important on suction line filter driers which
are continually wet when the unit is operating.
NOTE: Be careful not to kink or dent refrigerant lines. Kinked
or dented lines will cause poor performance or compressor
damage.
Do NOT make final refrigerant line connection until plugs
are removed from refrigerant tubing.