Airwell Flow logic IVHR Manual De Instalación página 33

Installation procedure
D. Check valve operation
Open/ close method: (The suction gas pipe stop valve for
• Take down the valve cap, suction gas pipe, HP gas pipe turns to "open"
• Turn the liquid pipe and the oil equalization pipe with hexangular spanner until it stops. If opening the valve strongly, the
valve will be damaged.
• Tighten the valve cap.
Tighten torque as the table below:
For suction gas pipe and HP gas pipe
For liquid pipe
For oil equalization pipe
E. Additional refrigerant charging
Charge the additional refrigerant as liquid state with the gauge.
If the additional refrigerant can not be charged totally when the outdoor stops, charge it at the trial mode.
If the unit runs for a long period in the state of lack of refrigerant, compressor will occur failure.
( the charging must be finished within 30 minutes especially when the unit is running, meanwhile charging the refrigerant).
The unit is charged only part of the refrigerant at the factory, also need additional refrigerant at the installation site.
W1: Refrigerant charging volume to outdoor unit at factory.
W2: Refrigerant charging volume to outdoor unit on site.
W3: Refrigerant charging volume to liquid pipe base on different piping length calculation.
W3=actual length of liquid pipe×additional amount per meter liquid pipe=
L1×0.35+L2×0.25+L3×0.17+L4×0.11+L5×0.054+L6×0.022
L1: Total length of 22.22 liquid pipe; L2: Total length of 19.05 liquid pipe;
L3: Total length of 15.88 liquid pipe; L4: Total length of 12.7 liquid pipe;
L5: Total length of 9.52 liquid pipe; L6: Total length of 6.35 liquid pipe;
Total refrigerant volume charging on site during installation=W2+W3
W: Total refrigerant volume charging on site for maintenance.
W1:
Refrigerant
charging
Model
volume to
outdoor unit at
factory
10kg
VVEA-250R-01T32
10kg
VVEA-280R-01T32
10kg
VVEA-335R-01T32
10kg
VVEA-400R-01T32
10kg
VVEA-450R-01T32
10kg
VVEA-504R-01T32
10kg
VVEA-560R-01T32
10kg
VVEA-615R-01T32
"open"state
Tighten torque N·m
Shaft (valve body)
Less than 7
7.85 (MAX15.7)
4.9 (MAX11.8)
Refrigerant record form
W3: Refrigerant charging volume to
W2:
liquid pipe base on different piping
Refrigerant
length calculation
charging
volume to
Liquid pipe
outdoor unit
diameter
on site (mm)
1.0kg Ø6.35
1.0kg Ø9.52
2.5kg Ø12.7
2.5kg Ø15.88
5.5kg Ø19.05
5.5kg Ø22.22
7.0kg Ø25.4
7.0kg
VVEA-250/280/335/400/450/504/560/615R-01T32.
Cap (cover)
Less than 30
29.4 (MAX39.2)
16.2 (MAX24.5)
volume charging
Additional refrigerant
amount
(kg)
0.022kg/m×__m=__kg
0.054kg/m×__m=__kg
0.11kg/m×__m=__kg
0.17kg/m×__m=__kg
0.25kg/m×__m=__kg
0.35kg/m×__m=__kg
0.52kg/m×__m=__kg
W3=___kg
25
"close"state
T-shape nut (check joint)
13
8.8 (MAX14.7)
8.8 (MAX14.7)
Total refrigerant
W: Total refrigerant
volume charging on
on site during
site for maintenance
installation
W2+W3=___kg W1+W2+W3=___kg