Fire Hazard; Burn Hazard - Carrier Performance 25TPB7 Installation Instructions Manual

25TPB7: Installation Instructions
Accessory
Compressor Start Assist Capacitor and Relay
Crankcase Heater
Evaporator Freeze Thermostat
Hard Shutoff TXV
High Pressure Switch
Isolation Relay
Liquid Line Solenoid Valve
Low-Ambient Pressure Switch
Support Feet
*. For tubing line sets between 80 and 200 ft. (24 and 61 m) and/or 20 ft. (6.1 m) vertical differential, refer to Residential Piping and Long Line Guideline.
Brazing Connections
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.
Connect vapor tube to fitting on outdoor unit vapor service valves (see
Table 2). Connect liquid tubing to adapter tube on liquid service valve.
Use refrigerant grade tubing.
Table 2 – Refrigerant Connections and Recommended Liquid and
Vapor Tube Diameters (In.)
LIQUID
UNIT SIZE
Connection
Diameter
024 3/8
036 3/8
048, 060 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 indoor coils to these units.
2.For Tubing Set lengths between 80 and 200 ft. (24 and 61 m) horizontal or
20 ft. (6.1 m) vertical differential, refer to the Residential Piping and Long Line
Guideline.
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.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Table 1 – Accessory Usage
Required for Low Ambient
Cooling Applications
(Below 55°F / 12.8°C)
Yes (standard)
(standard w/factory approved
indoor unit)
Recommended
Recommended
RATED VAPOR
Tube Connection
Diameter Diameter Diameter
3/8 3/4
3/8 7/8
3/8 7/8
Required for Long Line
Yes
Yes
Yes
(standard w/factory approved
Recommended
Yes
See Residential Piping
No
and Long Line Guideline
Yes

BURN HAZARD

Failure to follow this Caution may result in personal injury.
Components will be HOT after brazing. Wear appropriate personal
protective equipment and allow to cool before handling parts and
equipment
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.
Tube
NOTE: For Liquid Service Valve - Braze lineset to adapter tube
BEFORE bolting adapter to valve. This helps prevent overheating and
3/4
damage to plastic washer or o-ring.
7/8
For Vapor Service Valve - remove valve core from schrader port on
1-1/8
Service Valve BEFORE brazing. This helps prevent overheating and
damage to valve seals (refer to
is completed.
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.
4
Required for Sea Coast
*
Applications
(within 2 miles/3.2 km)
Yes
Yes (standard)
No
Yes
(standard w/factory approved
indoor unit)
No
No
No
CAUTION
!
Fig. 5). Replace valve core when brazing
Fig. 5 – Vapor Service Valve
Applications
No
No
No
Yes
indoor unit)
No
No
No
No
Recommended
A14236