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Notes:
•
Cooling pipes are available as an option. Read the manual before
beginning their installation.
•
Place insulation materials over cooling pipes and drain pipes to
prevent condensation.
•
If commercially available copper pipes are used, wrap liquid and
gas pipes with commercially available insulation materials (heat-
°
resistant to 100
C or more, thickness of 12 mm or more).
•
The indoor parts of the drain pipe should be wrapped with
polyethylene foam insulation materials (specific gravity of 0.03,
thickness of 9 mm or more).
6.1. Refrigerant and drainage pipe sizes
Refrigerant and Drainage Piping Sizes
Model
Item
Refriger-
Liquid
ant piping
Gas
Drainage piping
Ordering numbers for separately sold refrigerant pipes
5 m
7 m
10 m
15 m
D
75
65
E
16
PLH-2, 2.5
ODø9.52 (3/8")
ODø15.88 (5/8")
PVC pipe: VP-25 [ODø32 (1 1/4")]
PLH-2, 2.5
PAC-05FFS-E
PAC-07FFS-E
PAC-10FFS-E
PAC-15FFS-E
I
F
A
42
H
G
B
C
6. Cooling pipe and drain pipe
E
6.2. Charging refrigerant
1 Refrigerant amount
This product needs no additional charging of refrigerant for a pipe length
of 30 m or less. If the pipe length is longer than 30 m, add refrigerant
according to the table shown below.
•
To add refrigerant, use the check valve connected to the low pressure
pipe inside the outdoor unit.
Allowable pipe
Models
length (m)
PLH-2
40
PLH-2.5
40
2 Air purge
Never air purge the refrigerant piping by releasing the refrigerant (gas)
contained in the outdoor unit. Always use a vacuum pump.
Warning:
Never use substances other than the specified refrigerant (R-22).
6.3. Refrigerant and Drainage Piping Lo-
cations
A Drain pipe (Connect to VP-25)
B Ceiling panel
C Grille
D Refrigerant pipe (liquid)
E Refrigerant pipe (gas)
F Drain plug
G Water supply inlet (Drain lift-up mechanism)
H Main unit
I Viewed from unit ceiling
•
When the optional multi-functional casement is installed, add 135 mm
to all dimensions marked with ∗.
Amount of additional refrigerant (kg)
31 – 40 m
41 – 50 m
0.2
—
0.2
0.5
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