7
OUTDOOR UNIT CONNECTED TO FACTORY
APPROVED
INDOOR
UNIT
These outdoor units are carefully evaluated and listed with
specific indoor coils for proper system performance.
IMPORTANT: Do not apply indoor coils which are not factory
approved to these units.
INSTALL ADAPTER
TUBE
1. Remove plastic retainer holding outdoor piston in liquid
service valve.
2. Check outdoor piston size with matching number listed on unit
rating plate.
3. Locate plastic bag taped to unit containing adapter tube.
4. Remove Teflonļ washer from bag and install on open end of
liquid service valve. (See Fig. 5.)
5. Remove adapter tube from bag and connect threaded nut to
liquid service valve. Tighten nut finger--tight and then with
wrence an additional 1/2 turn (15 ft-- lb). DO NOT OVER
TIGHTEN!
REFRIGERANT T UBING AND SWEAT CONNECTIONS
Co n n ect vap o r tub e to fittin g o n o u tdoor unit vapor service
valves (see Table 2). Connect liquid tubing to adapter tube on
liquid
service valve. Use refrigerant grade tubing.
CAUTION
!
UNIT D AMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
To avoid valve damage while brazing, service valves
must be wrapped in a heat--sinking material such as a wet
cloth.
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage
or improper operation.
To avoid performance loss and compressor failure, installation
of filter drier in liquid line is required.
INSTALL LIQUID LINE FILTER DRIER
INDOOR
Refer to Fig. 7 and install filter drier as follows:
1. Braze 5 in. liquid tube to the indoor coil.
2. Wrap filter drier with damp cloth.
3. Braze filter drier to 5 in. long liquid tube from step 1.
4. Connect and braze liquid refrigerant tube to the filter drier.
A05227
Fig.7--LiquidLineFilterDrier
LEAK
TESTING
Leak test all joints indoors, outdoors, and refrigerant tubing.
EVACUATE REFRIGERANT TUBING AND INDOOR
COIL
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
To avoid compressor damage never use the system
compressor as a vacuum pump.
Refrigerant tubes and indoor coil should be evacuated using the
recommended the recommended deep vacuum method of 500
microns. The alternate triple evacuation method may be used if
the procedure outlined below is followed.
IMPORTANT : Always break a vacuum with dry nitrogen.
25HBA
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