Lennox Elite Series XP13 Units Installation Instructions Manual page 4

CHECK
EXPANSION VALVE
LOW HIGH
PRESSURE PRESSURE
GAUGE MANIFOLD
TO
HFC−410
A DRUM
SERVICE PORT
CAP
SERVICE PORT
CORE
VALVE STEM
FRONT-SEATED
TO INDOOR
UNIT
TO OUTDOOR UNIT
Figure 3. Angle−Type Service Valve
(Font−Seated Closed)
NOTE − A label with specific torque requirements may be
affixed to the stem cap. If the label is present, use the
specified torque.
SERVICE PORT CAP
SERVICE PORT
CORE
OPEN TO BOTH
INDOOR AND
OUTDOOR UNITS
TO INDOOR
UNIT
TO OUTDOOR UNIT
Figure 4. Angle−Type Service Valve
(Back−Seated Opened)
506270−01 05/09
BI−FLOW
FILTER /
OUTDOOR
DRIER
MUFFLER
LIQUID
SERVICE
PORT
LIQUID
LINE
VALVE
COMPRESSOR
Figure 2. Typical Manifold Gauge Connection Setup
SERVICE PORT
(VALVE STEM SHOWN
CLOSED) INSERT HEX
WRENCH HERE
STEM CAP
CLOSED TO BOTH INDOOR
AND OUTDOOR UNITS
SERVICE PORT
(VALVE STEM SHOWN OPEN)
INSERT HEX WRENCH HERE
STEM CAP
DISTRIBUTOR
HEAT PUMP
REVERSING VALVE
COIL
VAPOR
SERVICE
PORT
NOTE− To prevent stripping of the cap, the wrench should
be appropriately sized and fit snugly over the cap before
tightening the cap.
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
D
tighten per table 1.
Without Torque Wrench: Finger tighten and use an
D
appropriately sized wrench to turn an additional
1/6 turn clockwise as illustrated in figure 1.
OPEN TO LINE SET WHEN VALVE IS CLOSED,
TO BOTH LINE SET AND UNIT WHEN VALVE IS
OPEN.
TO OPEN ROTATE STEM
COUNTERCLOCKWISE 90°.
TO CLOSE ROTATE STEM
CLOCKWISE 90°.
SERVICE PORT CAP
TO OUTDOOR UNIT
Figure 5. Ball−Type Service Valve
Page 4
NOTE − ARROWS INDICATE DIRECTION
OF REFRIGERANT FLOW.
INDOOR UNIT
VAPOR
LINE
VALVE
CHECK EXPANSION VALVE
SERVICE PORT
SERVICE PORT
CORE
INDOOR
COIL
TO INDOOR UNIT
BALL (SHOWN
CLOSED)
VALVE
STEM
STEM CAP