1111
Stop ValVe operatIon method
The gure below shows the name of each part required in
handling the stop valve. At the time of shipment, the stop
valve is closed.
CAUTION
•Be Sure to open the Stop ValVe.
•Inadequate torque may cauSe leakage of refrIgerant.
Opening Procedure
1. Remove the valve lid and use a hexagonal wrench to
turn valve counterclockwise.
2. Turn valve until shaft stops.
3. Then turn valve until designated torque as shown in
below table is achieved (3.5 - 5.0 ton only due to back
sealing type valve).
4. Put valve lid on valve.
Closing Procedure
1. Remove the valve lid and use a hexagonal wrench to
turn valve clockwise.
2. Turn valve until shaft stops.
3. Then turn valve until designated torque as shown in
below table is achieved.
4. Put valve lid on valve.
<1.5 - 3.0 ton>
Service port
Hexagonal wrench
Close
*Rotate lightly until
it stops, then tighten
1/4 - 1/2 rotation.
Open
Valve lid
Gas stop valve
<3.5 - 5.0 ton>
Valve lid
Service port
Stop valve
Hexagonal wrench
Close
Open
Service port
Cap
Valve lid
Hole for
hexagonal wrench
Shaft
Back sealing
* The illustration shows
the removal procedure.
Perform the actions in
the reverse order to
reattach.
Rotate the
valve lid 90°
to the right or
to the left.
Align the recess of the
valve lid and the T-joint
on the valve body, then
remove the lid.
*To be sealed,
follow step 3 of
Opening Procedure.
* The illustrations above refer to 3.5 - 5.0 ton only.
Stop Valve
Tonnage Piping
Stop valve
size
Type
Tightening
torque
Wrench
size
1.5 - 2.0
ton
Liquid 3/8”
Front
sealing
type
6 - 8 N·m 3/16”
Gas 3/4” 19 - 21 N·m 5/16”
2.5 - 3.0
ton
Liquid 3/8” 6 - 8 N·m 3/16”
Gas 7/8” 19 - 21 N·m 5/16”
3.5 - 5.0
ton
Liquid 3/8” Front and
back seal-
ing type
5 - 7 N·m 4 mm
Gas 7/8” 19 - 21 N·m 8 mm
Service Port
Tighten Torque
Service Port
(3.5 - 5.0 ton only)
10.7 – 14.7 N·m
SyStem Start-up procedure
GENERAL NOTES:
Adequate refrigerant charge for the matching indoor unit
and line set is supplied with the heat pump. If liquid line set
exceeds factory charge length, refrigerant should be added
based on liquid line. Refer pages 16-18 for calculation
of refrigerant charge based on line set length.
VIolatIon of epa regulatIonS may reSult In fIneS or other
penaltIeS.
NOTICE
all unItS Should haVe a hIgh Voltage power Supply connected
2 hourS prIor to Startup.
NOTICE
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