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Hitachi EV-1.5N Installations- Und Betriebshandbuch Seite 15

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Expansion Valve Kit EV-.5N
Installation & Operation Manual
1.3. Additional refrigerant charge calculation between expansion valve kit and I.U. (W
Additional refrigerant charge is 0.05 kg/m (per unit) between expansion valve kit and I.U.
(Example: 5 units – Expansion valve kit))
2 units: 5 m
3 units: 3m
This system
1.4. Calculation of additional charge (W kg)
Put weight W
, weight W

2
Total volume of additional charge
(Example)
This system
2. Record of additional charge
Record the refrigerant charging quantity in order to facilitate maintenance and servicing activities.
Total refrigerant charge of this system is calculated in the following formula.
Total refrigeranrt charge of this system
*(see next table for W
Outdoor Unit
RAS-5FSN
RAS-8FSN
RAS-0FSN
RAS-2FSN
RAS-14,16FSN1
RAS-8FSN
RAS-20, 22FSN1
RAS-24FSN
RAS-26FSN
RAS-28FSN
RAS-30FSN
RAS-32FSN
RAS-34FSN
RAS-36,38FSN
RAS-40, 42FSN
?
NOTES:
1. W
is outdoor unit ref. charge before shipment.
0
2. E.V.K.: Expansion Valve Kit for wall type units.
3. *1: The total amount of the additional refrigerant charge must not exceed the value in the table.
Page 3
W
=
2
3'
W
=
3
3''
Total:
W
=
3'
W
=
3''
W
=
3'''
Total:
and weight W
calculated in items 1.1, 1.2 and 1.3 into the following formula.
3
W =
W =
W =
This system
values)
0
W
Outdoor Unit
0
ref. charge (kg)
5.4
7.0
8.5
9.0
3.0
9.0
9.0
23.0
24.0
25.0
26.0
26.0
28.5
3.0
32.0
PMML083A - 07/2008
kg)
3
units x
5
m x 0.05 kg/m =
units x
3
m x 0.05 kg/m =
W
= W
+ W
3
3'
3''
units x
m x 0.05 kg/m =
units x
m x 0.05 kg/m =
units x
m x 0.05 kg/m =
W
= W3' + W3'' + W3''' =
3
W
+
W
+

2
0.8
+
0.0
+
+
+
W
+
W
0*
+
Max. ref. charge
(kg) *1
5.0
22.0
22.0
22.0
34.0
34.0
34.0
52.0
52.0
52.0
52.0
52.0
52.0
52.0
52.0
0.50
kg
0.45
kg
=
0.95
kg
kg
kg
kg
kg
W
=
3
0.95
=
.75
kg
=
kg
=
kg
Max. E.V.K. to be
connected (unit)
8
3
6
6
20
20
20
27
29
3
32
32
32
32
32

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