Mitsubishi Heavy Industries SRK20HG Technical Manual

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5.3 Installation of outdoor unit
(1) Installation of outdoor unit
(a) Make sure that the unit is stable in installation. Fix the unit to stable base.
(b) When installing the unit at a higher place or where it could be toppled by strong winds, secure the unit firmly with foundation
bolts, wire, etc.
(c) Perform wiring, making wire terminal numbers conform to terminal numbers of indoor nuit terminal block.
(d) Connect using ground screw located near
mark.
(e) In areas where the temperatures drop below 0ºC for serveral continuous days, do not install a drain elbow.
(Water dischage could stop due to freezing.)
• Specified torquing value:
Liquid side (ø6.35) : 14~18N·m (1.4~1.8kgf·m)
Gas side (ø9.52) : 34~42N·m (3.4~4.2kgf·m)
Gas side (ø12.7) : 49~61N·m (4.9~6.1kgf·m)
• Use one more spanner to fix the valve.
¡ Remove the flared nuts.
(on both liquid and gas sides)
¡ Remove the flared nuts.
(on both liquid and gas sides)
¡ Install the removed flared nuts to the pipes to be
connected, then flare the pipes.
Dimension A
Liquid side
(ø6.35): 9.0 mm
Gas side
(ø9.52): 13.0 mm
(ø12.7): 16.2 mm
Press
Remove
Remove
(Do not
turn)
Spanner
for fixing
the piping)
Torque
wrench
• Specified torquing value:
Liquid side (ø6.35) : 14~18N·m (1.4~1.8kgf·m)
Gas side (ø9.52) : 34~42N·m (3.4~4.2kgf·m)
Gas side (ø12.7) : 49~61N·m (4.9~6.1kgf·m)
• Always use a Torque wrench and back up spanner to tighten the flare nut.
5.4 Connection of refrigerant pipings
(1) Preparation
Keep the openings of the pipes covered with tapes etc. to prevent dust, sand, etc. from entering them.
(a) Indoor unit side
(b) Outdoor unit side
(2) Connection of refrigerant piping
(a) Indoor unit side
• Connect firmly gas and liquid side
pipings by Torque wrench.
(b) Outdoor unit side
• Connect firmly gas and liquid side
pipings by Torque wrench.

Mitsubishi Heavy Industries SRK20HG Specifications

General

Brand	Mitsubishi Heavy Industries
Model	SRK20HG
Category	Air Conditioner
Language	English