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PH14*B, PH15NB, PH16NC: Installation Instructions
Fig. 5 – Vapor Service Valve
Brazing Connections
Connect vapor tube to fitting on outdoor unit vapor service valves (see
Table
2). Connect liquid tubing to adapter tube on liquid service valve if
the valve contains a piston body or connect directly to the liquid service
valve if the unit uses an outdoor TXV.
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.
Apply heat absorbing paste or heat sink product between service valve
and joint. Wrap service valves with a heat sinking material such as a wet
cloth.
After wrapping service valve with a wet cloth, tubing set can be brazed
to service valve using either silver bearing or non–silver bearing brazing
material. Do not use soft solder (materials which melt below
800°F/427°C). Consult local code requirements.
NOTE: Some outdoor units contain a mechanical fitting at the liquid
distributor. This connection is not field serviceable and should not be
disturbed.
NOTE: For Liquid Service Valve with Piston Body - Braze lineset to
adapter tube BEFORE bolting adapter to valve. This helps prevent
overheating and damage to plastic washer or o-ring.
For Vapor Service Valves and Liquid Service Valves with No Piston
Body - remove valve core from schrader port on Service Valve BEFORE
brazing. This helps prevent overheating and damage to valve seals (refer
to
Fig.
5). Replace valve core when brazing is completed.
WARNING
!
FIRE HAZARD
Failure to following this warning could result in personal injury, death
and/or property damage.
Refrigerant and oil mixture could ignite and burn as it escapes and
contacts brazing torch. Make sure the refrigerant charge is properly
removed from both the high and low sides of the system before brazing
any component or lines.
Clean line set tube ends with emery cloth or steel brush. Remove any grit
or debris.
Insert line set tube ends into service valve tube stubs.
Apply heat absorbing paste or heat sink product between service valve
and joint. Wrap service valves with a heat sinking material such as a wet
cloth.
Braze joints using a Sil-Fos or Phos-copper alloy.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Table 2 – Refrigerant Connections and Recommended Liquid and
UNIT SIZE
Connection
Diameter
18, 24
3/8
30, 36,
3/8
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.
A14236
Notes:
1. Do not apply capillary tube indoor coils to these units.
.2 For Tubing Set lengths between 80 and 200 ft. (24.38 and 60.96 m) horizontal or 20 ft.
(6.09 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.
Installing with Indoor Piston
Heat pumps with piston indoor ratings are shipped with the correct
piston size in the accessory bag. Check piston size shipped with indoor
unit to see if it matches required indoor piston size. If it does not match,
replace indoor piston with correct piston size which is listed on the rating
plate.
NOTE: Heat pumps without piston indoor ratings may be installed as a
replacement component in a piston system.
non-piston rated heat pump with with a piston indoor the correct indoor
piston must be installed. When not listed on the rating plate the correct
piston size is listed in the product data. Replacement pistons can be
ordered from Replacement Components.
Fig. 6 – Indoor Piston Installation
Install Liquid Line Filter Drier Indoor
Refer to
Fig. 7
and install filter drier as follows:
1. Braze 5 in. (127 mm) liquid tube to the indoor coil.
2. Wrap filter drier with damp cloth.
3. Braze filter drier to 5 in. (127 mm) long liquid tube from step 1.
4. Connect and braze liquid refrigerant tube to the filter drier.
IMPORTANT: Installation of the filter drier in liquid line is required.
Fig. 7 – Liquid Line Filter Drier
4
Vapor Tube Diameters (In.)
LIQUID
RATED VAPOR
Tube
Connection
Diameter
Diameter
3/8
5/8
3/8
3/4
3/8
7/8
3/8
7/8
Tube
Diameter
5/8
3/4
7/8
1–1/8
When installing a
A10342
A05227
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