Installation guide

FEEDER TUBE
STUB TUBE
DEFROST
THERMOSTAT
A97517
Fig. 7--Defrost Thermostat Location
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Do not leave system open to atmosphere any longer than
minimum required for installation. POE oil in compressor is
extremely susceptible to moisture absorption. Ahvays keep
ends of tubing sealed during installation.
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If ANY rel}igerant tubing is buried, provide a minimum 6 in.
vertical rise to the valve connections at the unit. Do NOT bury
refrigerant tubing lengths greater than 36 in.
4. Remove Teflon washer from bag and install on open end of
liqnid service valve. (See Fig. 8.)
5. Remove adapter tube from bag and connect threaded nut to
liquid service valve. Tighten nut finger tight, and then using a
wrench, tighten an additional 1/2 turn (15 ft-lb). DO NOT
OVERTIGHTEN!
/_ SWEAT/FLARE
ADAPTER
PISTON
LIQUID SERVICE VALVE
A01214
Fig. 8--Liquid Service Valve with Sweat Adapter
Tube
To prevent damage to unit or service valves, observe the
following:
1. Use a brazing shield.
2. Wrap service valves with wet cloth or use a heat sink
material.
Outdoor units may be connected to indoor section using accessory
tubing package or field-supplied refi'igerant grade tubing of correct
size and condition. Tubing diameters listed in Table 1 are adequate
for equivalent lengths up to 50 It. For tubing requirements beyond
50 ft, substantial capacity and performance losses can occur.
Follow the recommendations in the Application Guideline and
Service Manual Air Conditioners and Heat Pumps Using Pu-
ron_ Refrigerant to minimize losses. Refer to Table 1 for field
tubing diameters. Refer to Table 2 Ibr accessory requirements.
Refrigerant tubes and indoor coil must be evacuated to 500
microns to minimize contamination and moisture in the system.
OUTDOOR UNIT CONNECTED TO FACTORY-APPROVED
INDOOR UNIT
These outdoor units are carefully evaluated and listed with specific
indoor coils lbr proper system peribrmance.
IMPORTANT: Do not apply indoor coils that are not factory
approved to these units.
INSTALL ADAPTER TUBE
i. 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.
REFRIGERANT TUBING AND FILTER DRIER
Connect vapor tubing to fittings on outdoor unit vapor service
valve. Connect liqnid tubing to filter &ier. (See Table 1 and Fig.
9.) Use refrigerant grade tubing. Connect other end of filter drier
to adapter tube on liquid service valve.
FILTER-DRIER
SERVICE
VALVE
A01215
Fig. 9--Filter Drier with Sweat Adapter Tube and
Liquid Tube