Installation Of Outdoor Unit; Refrigerant Piping - Mitsubishi SRK52HE Technical Manual

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 unit terminal block.
(d) Connect using ground screw located near
(e) In areas where the temperatures drop below 0ºC for several continuous days, do not install a drain elbow. (Water dischange
could stop due to freezing.)

5.4 Refrigerant piping

(1) Preparation
Keep the openings of the pipes covered with tapes etc. to prevent dust, sand, etc. from entering them.
Indoor unit side
(Do not
turn)
¡ Remove the flared nuts.
(on both liquid and gas sides)
(2) Connection of refrigerant piping
Indoor unit side
¡ Connect firmly gas and liquid side
pipings by Torque wrench.
Spanner
(for fixing
the piping)
Torque
wrench
¡ Specified torquing value:
Liquid side (ø6.35) : 14.0~18.0N·m (1.4~1.8kgf·m)
Gas side (ø15.88) : 68.0~82.0N·m (6.8~8.2kgf·m)
¡ Always use a Torque wrench and back up spanner to tighten
the flare nut.
mark.
Outdoor unit side
Press
Remove
¡ Remove the flared nuts.
(on both liquid and gas sides)
Power supply code
CENELEC code for cables requiring field cables
H05RNR3G2.5
Press
Remove
¡ Install the removed flared nuts to the pipes to be connected,
then flare the pipes.
Outdoor unit side
¡ Connect firmly gas and liquid side
pipings by Torque wrench.
¡ Specified torquing value:
Liquid side (ø6.35) : 14.0~18.0N·m (1.4~1.8kgf·m)
Gas side (ø15.88) : 68.0~82.0N·m (6.8~8.2kgf·m)
¡ Use one more spanner to fix the valve.
32
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Dimension A
Liquid side
(φ6.35): 9.0 mm
Gas side
(φ15.88): 19.4 mm