BMKH42M-NDG3 Owners & Installation Manual

Free match series
12
(2) Calculation of the Additional Refrigerant Charge
Additional Refrigerant Charge=
(ΣLength of Liquid Pipeφ0.375×54+ΣLength of Liquid Pipeφ0.25×22)-880
The biggest additional refrigerant charge value is 800g. It means that if the calculated value exceed 800g, the
additional refrigerant charge takes 800g, while the calculated value less than 800g, 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 da
maged it must be replaced by the
dedicated one.
(6) The earthing should be reliable and the earth wire should be connected to the dedicated device of the building
by the technician. Besides, the air switch coupled with the leakage current protection switch must be equipped, which
is of enough capacity and of both magnetic and thermal tripping functions in case of the short circuit and overload.
Table 8
Models Power S
upply Capacity of the ai
r Switch（A）
Recommended Cord（pieces×
sectional area）
30K 208/230V~60Hz 30 3×0.0062 sq in
36K 208/230V~60Hz 35 3×0.0062 sq in
BMKH42M-NDG3 208/230V~60Hz 40 3×0.0062 sq in
30K
Fig 11