LOW HIGH
PRESSURE PRESSURE
OUTDOOR UNIT (Uncased Coil Shown)
• TXV OR FIXED
OUTDOOR - ORIFICE
COIL
LIQUID LINE SUCTION LINE
COMPRESSOR-- I[ -" ..._
Each valve is equipped with a service port which has a
factory-installed valve stem.
Figure 1. Typical Manifold Gauge Connection Setup
To Open and Close Angle-Type Service Valve:
A valve stem cap protects the valve stem from
contamination and assures a leak-free seal,
t/6 TURN
1/12 TURN
Figure 2. Cap Tightening Distances
,A IMPORTANT
Operating Angle-Type Service Valve
To Access Angle-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 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.
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
suction-line valve sizes) to back the stem out
counterclockwise as far as it will go.
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.
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.
SERVICE PORT CAP
SERVICE PORT
SERVICE PORT
CLOSED TO BOTH
INDOOR AND
OUTDOOR UNITS
VALVE STEM
FRONT-SEATED
CLOSED) INSERT HEX
WRENCH HERE
TOINDOOR
UNIT
TO OUTDOOR UNIT
STEM CAP
Figure 3. Angle-Type Service Valve
(Font-Seated Closed)
Page 3
13ACD SERIES
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