Service Port; To Outdoor Unit - Lennox TSA036S4N41 Installation Instructions Manual

SERVICE PORT
SERVICE PORT
OPEN TO BOTH
INDOORAND
OUTDOOR UNITS
SERVICE PORT
(VALVE STEM SHOWN OPEN)
INSERT HEX WRENCH HERE
TOINDOOR
UNIT
STEM CAP
TO OUTDOOR UNIT
Figure 4. Angle-Type Service Valve
(Back-Seated Opened)
To Access Bali-Type Service Port:
A service port cap protects the service port core from
contamination and serves as the primary leak seal,
OPEN TO LINE SET WHEN VALVE IS CLOSED,
TO BOTH LINE SET AND UNIT WHEN VALVE IS
OPEN.
TO INDOOR UNIT
TO OPEN ROTATE STEM
COUNTERCLOCKWISE 90 ° . BALL(SHOWN
CLOSED)
TO CLOSE ROTATE STEM
CLOCKWISE 90 ° .
VALVE
STEM
CORE
SERVlCEPORTCAP
STEM CAP
Figure 5. Bali-Type Service Valve
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 Bali-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.
Remove existing HCFC-22 refrigerant using one of the
following methods:
METHOD 1 :
Use this method if the existing outdoor unit is not equipped
with manual shut-off valves, and plan on using existing
HCFC-22 refrigerant to flush the system,
NOTE - Use recovery machine instructions for specific
setup requirements.
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,
RECOVERY MACHINE
CLEAN RECOVERY
MANIFOLD GAUGES
/
OUTDOOR UNIT
Figure 6. Typical Refrigerant Recovery
(Method 1)
METHOD 2:
Use this method if the existing outdoor unit is equipped
with manual shut-off valves, and plan on using new
HCFC-22 refrigerant to flush the system,
IMPORTANT: Some system configurations may contain
higher than normal refrigerant charge due to either large
internal coil volumes, and/or long line sets, The following
conditions may cause the compressor to stop functioning:
The following devices could prevent full system charqe
recovery into the outdoor unit:
• Outdoor unit's high or low-pressure switches (if
applicable) when tripped can cycled the compressor
OFF,
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