6
Table 2—Accessory Usage
Accessory
REQUIRED FOR LOW AMBIENT
APPLICATIONS (Below 55
°
F
)
REQUIRED FOR LONG LINE
APPLICATIONS* (Over 80 Ft.)
REQUIRED FOR SEA
COAST APPLICATIONS
(Within 2 miles)
Crankcase Heater
Yes
Yes
No
Evaporator Freeze Thermostat
Yes
No
No
Winter Start Control
Yes
{
No
No
Accumulator
No
No
No
Compressor Start Assist Capacitor
and Relay
Yes
Yes
No
Motor Master
®
Control
or
Low---ambient Pressure Switch
Yes
No
No
Support Feet
Recommended
No
Recommended
Liquid Line Solenoid Valve
No
See Long---Line Application
Guideline
No
Ball Bearing Fan Motor
Yes
}
No
No
* For Tubing Set lengths between 80 and 200 ft. horizontal or 20 ft. vertical differential (250 ft. Total Equivalent Length), refer to the Longline
Guideline --- Air Conditioners and Heat Pumps using Puron refrigerant
}
Required for low---ambient controller (full modulation feature) and Motor Master
control only.
{
Only when low pressure switch is used.
Install Liquid--Line Filter Drier Indoor
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage
or improper operation.
Installation of filter drier in liquid line is required.
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Filter drier must be wrapped in a heat---sinking material
such as a wet cloth while brazing.
Refer to Fig. 5 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 above 5” liquid tube. Flow arrow
must point towards indoor coil.
4. Connect and braze liquid refrigerant tube to the filter drier.
A05178
Fig. 5
---
Liquid Line Filter Drier
Refrigerant Tubing Connection Outdoor
Connect vapor tube to fitting on outdoor unit vapor service
valves (see Table 1.) Connect and braze the 3/8” coupling
(provided with the filter drier) to the liquid service valve and
connect and braze the liquid tubing to the other end of this
coupling. Use refrigerant grade tubing.
Sweat Connection
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Service valves must be wrapped in a heat--sinking
material such as a wet cloth while brazing.
Service valves are closed from factory and ready for brazing.
After wrapping service valve with a wet cloth, braze sweat
connections using industry accepted methods and materials.
Consult local code requirements. Refrigerant tubing and indoor
coil are now ready for leak testing. This check should include all
field and factory joints.
Evacuate Refrigerant Tubing and Indoor Coil
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Never use the system compressor as a vacuum pump.
Refrigerant tubes and indoor coil should be evacuated using the
recommended deep vacuum method of 500 microns. The
alternate triple evacuation method may be used if the procedure
outlined below is followed. Always break a vacuum with dry
nitrogen.
123A
/124A
