Installation Of Outdoor Unit; Connection Of Refrigerant Pipings - Mitsubishi Heavy Industries SRK10CRS-S3 User's Manual & Installation Manual

Installation of outdoor unit

1 Make sure that the unit is stable in installation.
Fix the unit to stable base.
2 Perform wiring, making wire terminal numbers
conform to terminal numbers of indoor unit
terminal block.
! Brown
For power supply, indoor outdoor
± Blue
For power supply, indoor outdoor

Connection of refrigerant pipings

Preparation
Keep the openings of the pipes covered with tapes etc. to prevent dust, sand, etc. from entering them.
Indoor
(Do not turn)
Press
Remove
• Remove the fl ared nuts.
(on both liquid and gas sides)
•
Flaring work
Measur ement B
Flaring block
Copper pipe
Connection of refrigerant piping
Liquid side
Indoor Outdoor
Gas side
(Do not turn)
RMA012A088A_089A_RevB_EN.indb 32 RMA012A088A_089A_RevB_EN.indb 32
Outdoor
Press
Remove
• Remove the fl ared nuts.
(on both liquid and gas sides)
Measurement B (mm)
Copper pipe
Conventional (R22) flare tool
Clutch type flare
diameter
tool for R410A Clutch type
φ 6.35
0.0~0.5 1.0~1.5
φ 9.52
0.0~0.5 1.0~1.5
φ 12.7
0.0~0.5 1.0~1.5
φ 15.88
0.0~0.5 1.0~1.5
Connect the pipes on both liquid and gas sides.
Liquid side
Tighten the nuts to the following torque.
Gas side
Liquid side (φ 6.35)
Gas side (φ 9.52)
(φ 12.7)
(φ 15.88)
– 32 –
(Unit : mm)
Dimension A
Liquid side : ø6.35: 9.1
Gas side ø9.52: 13.2
A
ø12.7: 16.6
ø15.88: 19.7
• Install the removed fl ared nuts to the pipes
to be connected, then fl are the pipes.
Use a flare tool designed for R410A or a
conventional flare tool. Please note that
Wing nut type
measurement B (protrusion from the flaring block)
will vary depending on the type of a flare tool in
1.5~2.0
use. If a conventional flare tool is used, please
1.5~2.0
use a copper pipe gauge or a similar instrument
2.0~2.5
to check protrusion so that you can keep
measurement B to a correct value.
2.0~2.5
CAUTION
•
Do not apply excess torque to the fl ared nuts.
· ·
N m (kgf m)
Otherwise, the fl ared nuts may crack
14.0 ~ 18.0 (1.4~1.8)
depending on the conditions and refrigerant
34.0 ~ 42.0 (3.4~4.2)
leak may occur.
49.0 ~ 61.0 (4.9~6.1)
68.0 ~ 82.0 (6.8~8.2)
Terminal block
1 2
Interconnecting wire
CAUTION
•
Do not apply
refrigerating machine
oil to the fl ared
surface.
11/19/2018 4:05:09 PM 11/19/2018 4:05:09 PM