Bryant Preferred Series Installation Instructions Manual page 3

123A, 126B, 126C: Installation Instructions
Outdoor Unit Connected to Factory Approved Indoor
Unit
Outdoor unit contains correct system refrigerant charge for operation
with factory approved AHRI rated indoor unit when connected by 15 ft.
(4.57 m) of field-supplied or factory-accessory tubing, and factory
supplied filter drier. Check refrigerant charge for maximum efficiency.
NOTE: For 15 ft. (4.57 m) line set charge, refer to
tonnages may require additional charge depending on size. Find model
tonnage size in table, reference factory charge versus required charge to
determine if additional charge is required. Additional charge will be
needed for line sets longer than 15 ft. (4.57 m).
Refrigerant Tubing Connection Outdoor
Connect vapor and liquid tubes to fittings on vapor and liquid service
valves (see Table 1). 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.
Use refrigeration grade tubing. 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.
Table 1 – Refrigerant Connections and Recommended Liquid and
Vapor Tube Diameters (In.)
LIQUID
UNIT SIZE
Connection
& Tube
Diameter
18, 24 3/8
30, 36 3/8
42, 48 3/8
60 3/8
24ACC, 24APB
LIQUID
UNIT SIZE
Connection
& Tube
Diameter
18, 24, 30 3/8
36, 42, 48 3/8
60 3/8
* Units are rated with 25 ft. (7.6 m) of lineset. See Product Data sheet for
performance data when using different size and length linesets.
Notes:
1. Do not apply capillary tube to these units.
2. For Tubing Set lengths between 80 and 200 ft. (24.38 and 60.96 m) horizontal or 35
ft. (10.7 m) vertical differential 250 ft. (76.2 m) Total Equivalent Length), refer to
the Residential Piping and Longline Guideline- Air Conditioners and Heat Pumps
using Puron refrigerant.
3. For alternate liquid line options on 18-42 size units, see Product Data or
Residential Piping and Application Guideline
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Table 5. Some unit
24ACB
RATED VAPOR
up to 80 ft. (24.38 m)*
Connection Tube
Diameter Diameter
3/4 3/4
3/4 3/4
7/8 7/8
7/8 1-1/8
RATED VAPOR
up to 80 ft. (24.38 m)*
Connection Tube
Diameter Diameter
3/4 3/4
7/8 7/8
7/8 1-1/8
Install Liquid-Line Filter Drier Indoor
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage or
improper operation.
1. Installation of filter drier in liquid line is required.
2. Filter drier must be wrapped in a heat-sinking material such as a
wet cloth while brazing.
Refer to Fig. 3 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-in. (127 mm) liquid tube. Flow arrow
must point towards indoor coil.
4. Connect and braze liquid refrigerant tube to the filter drier.
Fig. 3 – Liquid Line Filter Drier
Evacuate Refrigerant Tubing and Indoor Coil
!
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 (see triple evacuation procedure in
service manual). Always break a vacuum with dry nitrogen.
Deep Vacuum Method
The deep vacuum method requires a vacuum pump capable of pulling a
vacuum of 500 microns and a vacuum gage capable of accurately
measuring this vacuum depth. The deep vacuum method is the most
positive way of assuring a system is free of air and liquid water. A tight
dry system will hold a vacuum of 1000 microns after approximately 7
minutes. See Fig. 4.
Fig. 4 – Deep Vacuum Graph
3
CAUTION
CAUTION
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