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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 compat-
ible with the type of refrigerant being used; otherwise, the in-
door coil must be replaced.

Burying Refrigerant Lines

If burying refrigerant lines can not be avoided, use the following
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.

NOTICE

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

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 entering 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. Be sure to follow the
manufacturer’s instruction when using the heat trap
compound. Note: Remove Schrader valves from service
valves before brazing tubes to the valves. Use a brazing
alloy of 2% minimum silver content. Do not use flux.

Torch heat required to braze tubes of various sizes is
proportional to the size of the tube. Tubes of smaller size
require less heat to bring the tube to brazing temperature
before adding brazing alloy. Applying too much heat to
any tube can melt the tube. Service personnel must use
the appropriate heat level for the size of the tube being
brazed. Note: The use of a heat shield when brazing is
recommended to avoid burning the serial plate or the finish
on the unit.

1. The ends of the refrigerant lines must be cut square, de-

burred, 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 dur-

ing brazing to prevent the formation of copper-oxide in-
side the refrigerant lines.  This may cause a blockage or
failure of the metering device.

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 continu-
ally 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.

NOTE:  

Before brazing, verify indoor piston size by checking

the piston kit chart packaged with indoor unit.

Leak Testing (Nitrogen or Nitrogen-Traced)

To avoid the risk of fire or explosion, never use
oxygen, high pressure air or flammable gases for leak
testing of a refrigeration system.

WARNING

To avoid possible explosion, the line from the
nitrogen cylinder must include a pressure regulator
and a pressure relief valve. The pressure relief valve
must be set to open at no more than 150 psig.

WARNING

Содержание GSC13018

Страница 1: ...ds It is the owner s and installer s responsibility to read and com ply with all safety information and instructions accompanying these symbols Failure to heed safety information increases the risk of...

Страница 2: ...t in a structure that is not complete either as part of new construction or renovation will void the warranty Installation Clearances Special consideration must be given to location of the con densing...

Страница 3: ...onger than necessary for installation CAUTION Use only refrigerant grade dehydrated and sealed copper tub ing to connect the condensing unit with the indoor evaporator After cutting the tubing install...

Страница 4: ...tion when using the heat trap compound Note Remove Schrader valves from service valves before brazing tubes to the valves Use a brazing alloy of 2 minimum silver content Do not use flux Torch heat req...

Страница 5: ...or less using suc tion and liquid service valves Using both valves is nec essary as some compressors create a mechanical seal separating the sides of the system 4 Close pump valve and hold vacuum for...

Страница 6: ...ow proper procedures may cause property damage personal injury or death WARNING 1 Add refrigerant amount shown in table below for the unit being installed Local codes often require a disconnect switch...

Страница 7: ...nit disposal 1 Purge gauge lines Connect service gauge manifold to base valve service ports Run system at least 10 minutes to allow pressure to stabilize 2 Temporarily install thermometer on suction l...

Страница 8: ...10 105 220 108 225 110 235 113 245 116 255 119 265 121 275 124 285 127 295 130 305 133 325 137 355 144 375 148 405 155 415 157 425 n a 435 n a 445 n a 475 n a 500 n a 525 n a 550 n a 575 n a 600 n a 6...

Страница 9: ...it Test Control Circuit with Voltmeter Low Voltage Test Voltage Faulty Evaporator Fan Motor Repair or Replace Shorted or Grounded Fan Motor Test Motor Windings Improper Cooling Anticipator Check Resis...

Страница 10: ...10 THIS PAGE INTENTIONALLY LEFT BLANK...

Страница 11: ...11 THIS PAGE INTENTIONALLY LEFT BLANK...

Страница 12: ...ty standards regardless of size or effi ciency We have designed these units to significantly reduce the most frequent causes of product failure They are simple to service and forgiving to operate We u...

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