Hitachi FSXNHE Serie Installations- Und Betriebshandbuch Seite 57

Piping work and refrigerant charge
• For 3 units combination
For heat pump systems (2 pipes)
Front side piping connection
H2
H1 K
G1
G2
I
E
A Outdoor unit A
B Outdoor unit B
C Outdoor unit C
D Outdoor unit D
E High/Low pressure gas piping (field-supplied)
For heat recovery systems (3 pipes)
Front side piping connection
G2
I2
K
I1
G1
A
H1
H2
J
E1
E2
H3
G3
A Outdoor unit A
B Outdoor unit B
C Outdoor unit C
D Outdoor unit D
High/low pressure gas piping
E1
(field-supplied)
E2 Low pressure gas piping (field-supplied)
43
PMML0294A_rev.2_02-2014.indb 43
K
F
≥ 500 mm
E
H3
K
F
K
G3
K
I
E
F Liquid piping (field-supplied)
G1 Piping connection kit 1 (high/low pressure gas)
G2 Piping connection kit 2 (high/low pressure gas)
G3 Piping connection kit 3 (high/low pressure gas)
H1 Piping connection kit 1 (liquid)
K
J
≥500mm
F
E1
I3
K
B B
K
C
F
D
K
J
E1
J
E2
F Liquid piping (field-supplied)
Piping connection kit 1
G1
(high/low pressure gas)
Piping connection kit 2
G2
(high/low pressure gas)
Piping connection kit 3
G3
(high/low pressure gas)
Piping connection kit 1
H1
(low pressure gas)
Piping connection kit 2
H2
(low pressure gas)
PMML0294A rev.2 - 07/2014
Downward piping connection
H1
H2
F
G1
G2
I
E
H2
H3
J
K
Downward piping connection
I1 I2
J
A
G1
B
H1
G2
H2
J
E2
E1
Piping connection kit 3
H3
(low pressure gas)
I1 Piping connection kit 1 (liquid)
I2 Piping connection kit 2 (liquid)
I3 Piping connection kit 3 (liquid)
J Accessory pipe (L-shaped)
K Accessory pipe
H3
F
G3
I
E
Piping connection kit 2 (liquid)
Piping connection kit 3 (liquid)
I Accessory pipe (L-shaped)
Accessory pipe (Z-shaped)
Accessory pipe
F
I3
C
J
F
D
E1
G3
E2
H3
14/07/2014 12:28:28