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505361M 09/07
3. Replace the stem cap and tighten as follows:
With Torque Wrench
: Tighten finger tight and then
tighten per table 1.
Without Torque Wrench
: Finger tighten and use an
appropriately sized wrench to turn an additional
1/12 turn clockwise as illustrated in figure 2.
SERVICE PORT
SERVICE PORT
CORE
TO OUTDOOR
UNIT
STEM CAP
(VALVE STEM SHOWN OPEN)
INSERT HEX WRENCH HERE
SERVICE PORT CAP
TO INDOOR
UNIT
OPEN TO BOTH
INDOOR AND
OUTDOOR UNITS]
Figure 4.
Angle−Type Service Valve
(Valve Back−Seated Opened)
NOTE − A label with specific torque requirements may be
affixed to the stem cap. If the label is present, use the
specified torque.
Operating Ball−Type Service Valve
To Access Ball−Type Service Port:
A service port cap protects the service port core from
contamination and serves as the primary leak seal.
1. Remove service port cap with an appropriately sized
wrench.
2. Connect gauge to the service port.
3. When testing is completed, replace service port cap and
tighten as follows:
With Torque Wrench
: Finger tighten and then
tighten per table table 1.
Without Torque Wrench
: Finger tighten and use an
appropriately sized wrench to turn an additional
1/6 turn clockwise as illustrated in figure 2.
To Open and Close Ball−Type Service Valve:
A valve stem cap protects the valve stem from
contamination and assures a leak−free seal.
1. Remove stem cap with a wrench.
2. Use an appropriately sized wrench to open. To open
valve, rotate stem counterclockwise 90°. To close
rotate stem clockwise 90°.
3. Replace the stem cap and tighten as follows:
With Torque Wrench
: Finger tighten and then
tighten per table 1.
Without Torque Wrench
: Finger tighten and use an
appropriately sized wrench to turn an additional
1/12 turn clockwise as illustrated in figure 2.
NOTE − A label with specific torque requirements may be
affixed to the stem cap. If the label is present, use the
specified torque.
NOTE− To prevent stripping of the cap, the wrench should
be appropriately sized and fit snugly over the cap before
tightening the cap.
BALL
(SHOWN
CLOSED)
SERVICE PORT
CORE
TO INDOOR UNIT
TO OUTDOOR UNIT
Use appropriately sized
wrench.
To
open
rotate stem
counterclockwise 90°.
To
close
rotate stem clockwise
90°.
SERVICE PORT
SERVICE PORT CAP
STEM CAP
VALVE
STEM
Open to line set when valve is closed, to
both line set and unit when valve is open.
Figure 5. Ball−Type Service Valve
Recovering Refrigerant from Existing
HCFC−22 System
Remove existing HCFC−22 refrigerant using one of the
following methods:
METHOD 1:
If the existing outdoor unit is not equipped with shut−off
valves, or if the unit is not operational, then:
1. Disconnect all power to the existing outdoor unit.
2. Connect to the existing unit a gauge set, clean
recovery cylinder and a recovery machine. Use the
instructions provided with the recover machine on how
to setup the connections.
3. Remove all HCFC−22 refrigerant from the existing
system. Check gauges after shutdown to confirm that
the entire system is completely void of refrigerant.
4. Disconnect the liquid and vapor lines from the existing
outdoor unit.
5. Remove the existing outdoor unit.
NOTE − Use recovery machine instructions for specific
setup requirements.
