Electrical And Control Settings; General Check - Hisense AHM-044HCDSAA Service Handbook

Installation

8.1.9 Electrical and control settings

8.1.9.1 General check

(1) Ensure all electrical apparatus used on site (power switch, circuit breaker, lead, conduit and terminal board) are selected
according to technical manual and national and local codes. Wiring must be made according to national and local codes.
(2) Check voltage is within rated voltage ± 10%. In case of low voltage, system will not start. In case of high voltage,
electrical parts will be burnt out.
(3) Confirm earth wire is connected.
Use wires which are not lighter than the polychloroprene sheathed flexible cord (code designation 60245 IEC 57).
Power
Model
supply
AHM- 220-240V
(044/060/080) ~
HCDSSA 50/60Hz
CB: Air circuit breaker.
ELB: Earth leakage breaker.
●
Turn OFF the main power switch of the indoor unit and the outdoor unit and wait for more than 10 minutes before electrical
wiring work or a periodical check is performed.
● The data corresponding to DHW electric heater is calculated in combination with the domestic hot water tank with 3kW DHW
electric heater. The DHW electric heater which power is equal or lower than 3kW, can be drived directly by indoor unit. As for
the DHW electric heater which power is over 3kW, the unit can only provide control signal.
(1)
Field wiring shall be in conformity to local laws and regulations, and all wiring operations must be performed by qualified professionals.
(2)
Refer to relevant standards for Above-noted power supply cables size.
(3)
Where power supply cable is connected through junction box in series, be sure to determine the total current and choose wires based
on the table below. Selection according to EN 60335-1.
Current i (A)
i ≤ 6
6 < i ≤ 10
10 < i ≤ 16
16 < i ≤ 25
25 < i ≤ 32
32 < i ≤ 40
40 < i ≤ 63
63 < i
※ 1: In the case that current exceeds 60A, do not connect cables in series.
(4) As a minimum, the chosen wires shall not be lighter than the polychloroprene sheathed flexible cord (code designation 60245 IEC 57).
(5)
The wiring specifications for weak current transmission circuit shall not be lower than that for RVV(S)P shielded wires or equivalent, and
the shielding layer shall be grounded.
(6)
A switch that can ensure all-pole disconnection shall be installed between power supply and air conditioning unit in such a manner that
the contact spacing shall not be less than 3 mm.
(7)
Once the power cord is damaged, the dealer or the professionals from designated maintenance department must be contacted in a
timely manner for repair and replacement.
(8)
For the installation of power cord, the earth wire must be longer than the current-carrying conductor.
Operation mode
Without DHW electric heater
With DHW electric heater
Power supply cables
Max. current
(A)
EN60335-1
16 3 x 2.5 mm² + GND
31 3 x 6.0 mm² + GND
2
Wire size (mm )
2.5
2.5
2.5
4
6
10
16
※1
62
Transmitting cables
CB
(A) (No. of poles/A/mA)
EN60335-1
20
2 x 0.75 mm² + GND
40
ELB
2/20/30
2/40/30