Mitsubishi PUHZ-RP250YHM-A, Installation Manual

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3
7
[Fig. 7.1.1]
30mm
A
B
C
8
8.2
[Fig. 8.2.1]
A
: Outdoor unit
B
: Indoor unit
A
B
A
7.1
Å
Outdoor model
RP250
ı
Liquid pipe
ø9.52
Ç
Gas pipe
ø22.2
A
9.2
9
[Fig. 9.2.1] [Fig. 9.2.2]
<A> Valve
liquid side/
flared type
A
B
C
H
I
G
F
E
D
( )
<B> Valve
gas side/
flanged type ( )
[Fig. 9.2.3]
A
B
[Fig. 9.2.4]
A
E
D
C
B
A
: Close-packed packing
B
: Hollow packing
C
: Valve
D
: Packing
E
: Connecting pipe with flange
A
: Example of closure materials (field supply)
B
: Fill the gap at the site
A
: Service port
For vacuuming in the refrigerant pipes on the site.
(Tightening torque 12 N·m)
B
: Shaft
Fully closed at the factory, when connecting the piping, and when vacuuming.
Open fully after these operations are completed.
<When opening>
• Turn the shaft counterclockwise with a hexagonal wrench.
• Turn around the shaft until it stops.
<When closing>
• Turn the shaft clockwise with a hexagonal wrench.
• Turn around the shaft until it stops.
C
: Flare nut
Coat the flare contact surface with refrigerating machine oil (small amount of
ester oil, ether oil, or alkyl benzene) and tighten the nut with a double-ended
wrench (refer to the following table for tightening torque).
D
: Cap
Remove the cap before operating the shaft. Be sure to return it to the original
position after completing the operation.
E
: Packing
Coat both sides of the packing with machine refrigerating oil (small amount of
ester oil, ether oil, or alkyl benzene) and tighten the flange.
(Tightening torque 25 N·m)
F
: Connecting pipe (accessory)
Be sure to remove the connecting pipe from the valve and braze it outside the unit.
G
: Field piping
Braze to the connecting pipe with unoxidized brazing.
H
: ø9.52 mm
I
: ø22.2 mm
A
: M10 anchor bolt procured at the site.
B
Corner is not seated.
C
Fixing bracket for hole-in anchor bolt (3 locations to fix with screws).
(mm)