Mitsubishi PUHZ-RP250YHM-A Installation Manual page 3

7
[Fig. 7.1.1]
B
A
8
[Fig. 8.2.1]
9
[Fig. 9.2.1]
C
E
A : Close-packed packing
B : Hollow packing
C : Valve
D : Packing
E : Connecting pipe with flange
[Fig. 9.2.3]
[Fig. 9.2.4]
A
A : Example of closure materials (field supply)
B : Fill the gap at the site
C
A
A
A
D
B
B
7.1
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).
8.2
A : Outdoor unit
B : Indoor unit
Å Outdoor model
RP250
B
9.2
[Fig. 9.2.2]
<A> Valve
(
liquid side/
flared type
A
B
C
H
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
(mm)
A
Ç Gas pipe
ı Liquid pipe
ø22.2
ø9.52
<B> Valve
( gas side/ )
)
flanged type
D
E
I
F
G
3