Carrier 24ACA Installation Manual page 6

Accessory
Crankcase Heater
Evaporator Freeze Thermostat
Winter Start Control
Accumulator
Compressor Start Assist Capacitor
and Relay
Motor Master® Control
or
Low---ambient Pressure Switch
Support Feet
Liquid Line Solenoid Valve
Ball Bearing Fan Motor
* 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
}Required for low--- ambient controller (full modulation feature) and Motor Master control only.
INSTALL LIQUID ---LINE FILTER DRIER INDOOR
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.
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
To avoid filter drier damage while brazing, filter drier must
be wrapped in a heat---sinking material such as a wet
cloth.
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.
Fig. 5 --- — Liquid Line Filter Drier
REFRIGERANT TUBING CONNECTION OUTDOOR
Table 2—Accessory Usage
REQUIRED FOR LOW---AMBI-
ENT APPLICATIONS
(Below 55 °F)
Yes
Yes
Yes {
No
Yes
Yes
Recommended
No
Yes}
A05178
REQUIRED FOR LONG LINE
APPLICATIONS* (Over 80 Ft.)
Yes
No
No
No
Yes
No
No
See Long --- Line Application
Guideline
No
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.
To avoid valve damage while brazing, service valves
must be wrapped in a heat- -sinking material such as a
wet cloth.
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.
To avoid compressor damage, 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.
6
REQUIRED FOR SEA
COAST APPLICATIONS
(Within 2 miles)
No
No
No
No
No
No
Recommended
No
No