Installation & Operation Manual -
VFH-B 30/36/42 Series
Inverterflex Series
12
(2) Calculation of the Additional Refrigerant Charge
Additional Refrigerant Charge=
(
Σ
Length of Liquid Pipe
φ
0.375×54+
Σ
Length of Liquid Pipe
φ
0.25×
22)-880
The biggest additional refrigerant charge value is
28 oz
. It means that if the calculated value exceed
28 oz,
,
the additional refrigerant charge takes
28 oz.
, while the calculated value less than
28 oz.
, the additional refrigerant
charge takes the calculated value.
4.4 Electric Wiring
4.4.1 Wiring precautions
(1) The installation must be done in accordance with the national wiring regulations.
(2) Only the power cord with the rated voltage and exclusive circuit for the air conditioning can be used.
(3) Do not pull the power cord by force.
(4) The electric installation should be carried out by the technician as instructed by the local laws, regulations
and also this manual.
(5) The diameter of the power cord should be large enough and once it is damaged it must be replaced
with
same value
.
(6) The
grounding
should be reliable and the earth wire should be connected to the dedicated
ground
of the
building
by the technician.
T
he
breaker
coupled with the leakage current protection switch must be equipped, which is
of enough capacity and of both magnetic
or
thermal tripping functions in case of short circuit
or
overload.
Table 8
Models
Power Supply
Capacity of the
breaker
（
A
）
Recommended Cord
（
pieces
×
sectional area
）
A-VFH30QB-1
208/230V~60Hz
30
3
×
0.0062 sq in
A-VFH36QB-1
208/230V~60Hz
35
3
×
0.0062 sq in
A-VFH42PB-1
208/230V~60Hz
40
3
×
0.0062 sq in
A-VFH30QB-1
A-VFH36QB-1
Fig 11
1
3
Inverterflex Series
