Hitachi FSXN1E Series Installation And Operation Manual page 66

Additional refrigerant charge
N O T E
• Some refrigerant charge calculations differ when installing
Wall Type (RPK-FSNH3M Series) with the expansion valve
kit. Refer to the item
type (RPK-FSNH3M Series) with the expansion valve
• Ensure that the total additional charge quantity should not ex-
ceed the max. additional refrigerant charge quantity shown in
the table on the next page.

Maximum additional refrigerant charge quantity
HP (5-10)
Maximum addi-
tional refrigerant
28.0
charge quantity
(kg)
Charging work
Charge the system with refrigerant R410A.
Record of additional charge
Total refrigerant charge of this system is calculated in the follow-
ing formula.
Total refrigerant charge
This system
Total additional charge:
Total refrigerant charge:
Date of refrigerant charge work:

Refrigerant charge amount of outdoor unit
before shipment (W0) kg
W0 Outdoor
Model unit refrigerant
charge (kg)
RAS-
5.4
8FSXN1E
RAS-
6.4
10FSXN1E
RAS-
7.3
12FSXN1E
RAS-
8.5
14FSXN1E
RAS-
9.5
16FSXN1E
N O T E
• W0 is outdoor unit refrigerant charge before shipment.
• In case of the combination of the base units, calculate the
total refrigerant charge before shipment of the outdoor units
to be combined.
52
PMML0294A_rev.2_02-2014.indb 52
Additional refrigerant calculation for wall
(12/16-P) (24/32-P)
12 (18-24)
(14/16)
36.0 40.0 51.0
= W + W0
= + =
W kg
kg
/ /
W0 Outdoor
Model unit refrigerant
charge (kg)
RAS-
5.6
5FSXNH(E)
RAS-
5.6
6FSXNH(E)
RAS-
7.7
8FSXNH(E)
RAS-
7.7
10FSXNH(E)
RAS-
8.3
12FSXNH(E)
PMML0294A rev.2 - 07/2014
Regarding the fluorocarbon, follow the specification label or re-
frigerant label attached to the product. After the additional re-
frigerant charge, record the total refrigerant (= refrigerant before
shipment + additional refrigerant in the field) in the refrigerant
label (*).
(*): In case of the combination of base units, record the total re-
kit.
frigerant in the main unit label.
N O T E
When the refrigerant is recovered or charged because of
repairing, operating or adjusting the unit, record the refrigerant
quantity again.
(26-54)
N O T E
63.0
• Emissions of the fluorocarbons without any reason are pro-
hibited.
• For disposal and maintenance of this product, collection of
fluorocarbons is required.

Additional refrigerant calculation for wall type
(RPK-FSNH3M Series) with the expansion valve kit
The additional refrigerant calculation for wall type (RPK-FSNH3M
Series) with the expansion valve kit is as follows. Refer to the
item Calculating method of additional refrigerant charge
kg
Firstly calculate the additional refrigerant amount for the liquid
pipe between Multi-Kit and the expansion valve kit according to
the piping length and diameter.
Then, calculate the additional refrigerant amount for the liquid
pipe between indoor unit and the expansion valve kit (Pipe diam-
eter: ∅6.35 refrigerant amount for 1m pipe: 0.011kg/m).
Calculate the additional
refrigerant charge quantity.
"0.011" kg per 1 m
Calculate the additional
refrigerant charge quantity
depending on the piping
length and the piping size
Liquid line
N O T E
Refer to the table
units and the expansion valve kit connectable to the outdoor unit.
Indoor unit
Multi kit (liquid line)
System Combination for the number of indoor
W1.
3 ~ 5m
Ø 6.35
Expansion
valve kit
L < 15m: Ø 6.35
15 ~ 30m: Ø 9.52
14/07/2014 12:28:31