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898841-UIM-B-0113
16 Johnson Controls Unitary Products
INSULATION AND TAPING
1. Cover piping joints with pipe cover.
2. For outdoor unit, insulate every pipe including all pipe joints.
3. Using piping tape, apply taping starting from entry of outdoor unit.
a. Stop the end of piping tape with tape that has an adhesive agent
attached.
b. When pipes have to be arranged through above ceiling, closet or
where temperature and humidity are high, make sure you wind
additional commercially sold insulation to prevent sweating.
4. An optional field-provided exterior wall channel may be used in lieu
of taping the utility bundle to protect the bundle from UV rays,
weather, etc. See Figure 37.
SECTION XVII: PURGING PROCEDURE,
LEAK TEST AND TEST RUN
SERVICE VALVES
The outdoor unit suction/vapor 2-way service valve is used to purge air,
test for leaks, check operating pressures and add refrigerant to system.
This valve is equipped with a service port which has a factory installed
valve core. Figure below provides information on how to access and
operate the 2-way angle-type service valve and 2-way shut-off valve.
After the piping has been connected to the indoor unit, perform the air
purge.
FIGURE 35: Line Set Connection Insulation and Taping
FIGURE 36: Utility Bundle
PLASTIC BANDS
INSULATION MATERIAL
CONNECTION
PIPE
VINYLTAPE
(WIDE)
INDOOR
UNIT PIPE
WRAP WITH VINYLTAPE
WRAP WITH VINYLTAPE
PIPE
DRAIN HOSE
VINYLTAPE (WIDE)
INDOOR UNIT
CONNECTING
CABLE
AUXILIARY PIPES
INSTALLATION
PLATE
FIGURE 37: Exterior Wall Utility Cover (Optional)
FIELD PROVIDED PROTECTIVE
CHANNEL (UTILITY BUNDLE INSIDE)