Daikin VRV-WIII RWEYQ72PTJU Service Manual page 134

Field Setting from Condensing Unit
Closing stop valve
1. Remove the cap and turn the valve clockwise with the hexagon wrench (JISB4648).
2. Securely tighten the valve until the shaft contacts the main body seal.
3. Make sure to tighten the cap securely.
 For the tightening torque, refer to the table on the next page.
Tightening torque
Stop valve
size
3.98-
Liquid side
19.91-
Gas side
24.33
(Refer to figure below)
Caution
 Do not damage the cap sealing.
 Always use a charge hose for service port connection.
 After tightening the cap, check that no refrigerant leaks are present.
 After working, securely tighten the cover of service port without fail by specified torque.
 When loosening a flare nut, always use 2 wrenches in combination. When connecting the piping, always use
a spanner and torque wrench in combination to tighten the flare nut.
 When connecting a flare nut, coat the flare (inner and outer faces) with ether oil or ester oil and hand-tighten
the nut 3 to 4 turns as the initial tightening.
 Do not forget to open the stop valve before starting operation.
Full close on
the suction gas
side
[Operation state]
 Compressor frequency: Normal cooling PI control, upper limit 177Hz
 Y5S, Y7S, four way valve: OFF
 Indoor unit electronic expansion valve (All unit): 1024 pulse
 Indoor unit fan: H tap
126
Tightening torque ft-lbs. (Turn clockwise to close)
Shaft (valve body)
(valve lid)
Hexagonal
9.95-12.17
4.87 wrench 1/8 in.
Hexagonal
26.54-32.44
wrench 3/8 in.
The main
body seal
[Heat pump system]
Never remove
Remove the cap and turn
the partition flange
the valve counter clockwise
for any reason.
with the hexagon wrenches
until it stops.
Discharge
Liquid side
gas side
Suction
gas side
Y1E, electronic expansion valve: Normal cooling control
Cap
Service port Flare nut
8.48-10.25 24.1-29.4
8.48-10.25
Shaft
Hexagon hole
Cap
Service port
[Heat recovery system]
Remove the cap and turn
the valve counter clockwise
with the hexagon wrenches
until it stops.
Discharge
gas side
Y3E: 0 pls
Gas side
accessory
pipe (1)
—
— 16.22-20.65
Liquid side
Suction
gas side
SiUS30-1301
Field Setting