Service Valves - Lennox XC20-036-230-01 Installation And Service Procedure

SERVICE VALVES

Operating Angle–Type Service Valve:
1. Remove stem cap with an appropriately sized wrench.
2. Use a service wrench with a hex-head extension (3/16" for liquid line valve sizes and 5/16" for vapor line valve sizes) to back
the stem out counterclockwise as far as it will go.
TO INDOOR
UNIT
TO OUTDOOR UNIT
ANGLE-TYPE SERVICE VALVE
(BACK-SEATED OPENED)
When service valve is OPEN, the service port is
open to line set, indoor and outdoor unit.
Operating Ball Type Service Valve:
1. Remove stem cap with an appropriately sized wrench.
2. Use an appropriately sized wrenched to open. To open valve,
rotate stem counterclockwise 90°. To close, rotate stem
clockwise 90°.
TO OPEN ROTATE STEM
COUNTERCLOCKWISE 90°.
TO CLOSE ROTATE STEM
CLOCKWISE 90°.
SERVICE PORT
SERVICE PORT
CORE
SERVICE PORT
CAP
TO OUTDOOR
UNIT
NOTE - A label with specific torque requirements may be affixed to the stem cap. If the label is present, use the specified torque.
XC20
ANGLE AND BALL
SERVICE PORT CAP
SERVICE PORT CORE
(VALVE STEM SHOWN OPEN)
INSERT HEX WRENCH HERE
STEM CAP
TO INDOOR UNIT
BALL (SHOWN
CLOSED)
VALVE
STEM
STEM CAP
Figure 3. Angle and Ball-Type Service Valves
ANGLE-TYPE SERVICE VALVE
(FRONT-SEATED CLOSED)
When service valve is CLOSED, the service port is open
to the line set and indoor unit.
To Access 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 set to service port.
3. When testing is completed, replace service port cap and tighten as
follows:
D
With torque wrench: Finger tighten and
torque cap per table 1.
D
Without torque wrench: Finger tighten and
use an appropriately sized wrench to turn
an additional 1/6 turn clockwise.
Reinstall Stem Cap:
Stem cap protects the valve stem from damage and serves as the
primary seal. Replace the stem cap and tighten as follows:
D
With Torque Wrench: Finger tighten and then
torque cap per table 1.
D
Without Torque Wrench: Finger tighten and
use an appropriately sized wrench to turn an
additional 1/12 turn clockwise.
8
(VALVE STEM SHOWN
CLOSED) INSERT HEX
WRENCH HERE
1/6 TURN
11 12
1
2
10
9 3
4
8
5
7
6
1/12 TURN
11 12
1
2
10
9 3
4
8
7 5
6