Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 258

SCM-C
(3) Mounting of interconnecting wires (Field wiring)
(a) Use cable for interconnection wiring to avoid loosening of the wires. CENELEC code for cables required field cables.
H05 RNR3AG1.5
(b) Connect the connection wire securely to the terminal block.
(c) In wiring, make sure that the wire terminal numbers are matched to the wire terminal numbers of indoor unit terminal
block.
(d) Terminal symbol OUTDOOR of the auto selector kit is used for outdoor unit, B for B indoor unit and C for C indoor unit.
(e) Affix the connection wire using the wire clamp. (Fig – 3)
To outdoor unit
To outdoor unit B
(4) Connection of refrigerant pipings
¡
Use ø6.35 connecting pipe for the liquid and ø9.52 for the gas side.
Preparation
¡
Keep the openings of the pipes covered with tapes, etc. to prevent dust, sand and other foreign matters from entering
inside the pipes.
Cap
Auto
selector
kit
¡ Remove the flared nuts (on both liquid and gas sides)
Connection
(a) Assign the symbols of "A", "B" and "C" to the indoor units, and paste the attached labels "A", "B" and "C" on the
respective indoor units. However, assign the symbol "A" to the indoor unit which is connected with the outdoor unit and
connect SKM25. Also, assign symbols "B" and "C" to the indoor units connected with the auto selector kit.
(b) Flare coupling symbol of OUTDOOR UNIT on auto selector kit is used for outdoor unit, INDOOR UNIT B for indoor B
unit and INDOOR UNIT C for indoor C unit.
256
Outdoor
Clamp
(Fig – 3)
Cut
Flared nut
(Remove the piping
after cutting.)
Terminal block
B C
Earth Earth
Earth
terminal terminal
terminal
To indoor unit C
e
A
¡ Insert the removed flared nuts to the pipes to be connected,
then flare the pipes.
Dimension A
Liquid side 9 dia-9.5 dia
Gas side 13.2 dia-14 dia