REMQ8~16P7Y1B
VRVIII System air conditioner
4PW37156-1
Installation manual
16
8.9.
Wiring example for wiring inside unit
9.
P
IPE
INSULATION
After finishing the leak test and vacuum drying, the piping must be
insulated. Take into account the following points:
■
Make sure to insulate the connection piping and refrigerant
branch kits entirely.
■
Be sure to insulate liquid and gas piping (for all units).
■
Use heat resistant polyethylene foam which can withstand a
temperature of 70°C for liquid side piping and polyethylene foam
which can withstand a temperature of 120°C for gas side piping.
■
Reinforce the insulation on the refrigerant piping according to
the installation environment.
Condensation might form on the surface of the insulation.
■
If there is a possibility that condensation on the stop valve might
drip down into the indoor unit through gaps in the insulation and
piping because the outdoor unit is located higher than the indoor
unit, this must be prevented by sealing up the connections. See
10. C
HECKING
OF
UNIT
AND
INSTALLATION
CONDITIONS
Be sure to check the following:
The piping work
1
Make sure piping size is correct.
See
"6.2. Selection of piping material" on page 5
2
Make sure insulation work is done.
See
"9. Pipe insulation" on page 16
3
Make sure there is no faulty refrigerant piping.
See
"6. Refrigerant piping" on page 5
The electrical work
1
Make sure there is no faulty power wiring or loose nuts.
See
2
Make sure there is no faulty transmission wiring or loose nuts.
See
3
Make sure the insulation resistance of the main power circuit is
not deteriorated.
Measure the insulation resistance and check if the value is in
accordance with relevant local and national regulations.
1
Power wiring
2
Wiring between units
3
Clamp to the electric box with field supplied clamps.
4
When routing out the power/ground wires from the right side:
5
When routing the remote control cord and inter-unit wiring, secure
clearance of 50 mm or more from the power wiring. Ensure that
the power wiring does not contact any heated sections (
).
6
Clamp to the back of the column support with field supplied
clamps.
7
When routing out the inter-unit wirings from the opening for piping
or from the front:
8
When routing out the power/ground wires from the front:
9
When routing out the power/ground wires from the left side:
10
Grounding wire
11
When wiring, pay attention not to detach the acoustic insulators
from the compressor.
12
Power supply
13
Fuse
14
Earth leakage breaker
15
Ground wire
Wire so that the ground wiring does not come into contact
with the compressor lead wiring. If they touch, this may
have an adverse effect on other devices.
Ambient temperature
Humidity
Minimum thickness
≤
30°C
75% to 80% RH
15 mm
>30°C
≥
80 RH
20 mm
1
Insulation material
2
Caulking, etc.
Be sure to insulate local pipes, as touching them can
cause burns.
