Installation Position; Piping Connection - Hitachi MC-20AN Installation Manual

INSTALLATION MANUAL
FOR MULTI-KITS

4.2. InstallatIon PosItIon

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Horizontal Installation
Locate the branch pipes on the same horizontal plane.
(Inclination within ±15º)
Make the straight length a minimum of 500mm after the
vertical bend.
Incorrect installation may lead to a failure of outdoor unit.
A Straigh length 500 mm (MIn.)
Horizontally
B
Upward
C
Downward
D
Inclination within ± 15º
E
Inclination (View from E)
F

4.3. PIPIng connectIon

Perform the piping connection work by referring to the figure below.
Refer to Installation and Maintenance Manual for Outdoor Unit for the piping length between outdoor units and between piping
connection kits.
Example: 38HP (The combination of 3 outdoor units)
−
Front side or rear side piping connection
C1
A
B
D1
E
Downward piping connection
−
A
B
C1
D1
E
E
F
C2
E
D2
E
F
I
C2
E
D2
A
H
G
H
G
P5414715, PMML0206A-rev.2 - 01/2011
B
C
D
o
+15
F
A Gas piping (Field supplied)
B Liquid piping (Field supplied)
C1 Piping connection kit 1 (Gas)
C2 Piping connection kit 2 (Gas)
D1 Piping connection kit 1 (Liquid)
D2 Piping connection kit 2 (Liquid)
Accessory pipe with piping
E
connection kit (L-shape)
F Outdoor unit A
G Outdoor unit B
H Outdoor unit C
Accessory pipe with piping
I
connection kit (Z-shape)
3