Electrical Supply And Wiring To The Air Curtain - Mitsubishi Electric thermoscreens HX2-S/M 1000 DXE Installation, Operation & Maintenance Instructions Manual

Electrical Supply and Wiring to the Air Curtain

This must be carried out AFTER the connection of the refrigerant pipework. All
electrical wiring and connections MUST be carried out by a competent qualified
electrician in accordance with the latest edition of the IEE wiring regulations
and/or local statutory regulations. (see also Wiring Diagrams)
A local isolator having a contact separation of at least 3mm on all poles must be

fitted in the 1 phase electrical supply (1L + N + E) to the air curtain and located in
an accessible position adjacent to the unit.
Do not have a switch or isolator in the S2, S3 (Comms Link), use continuous wire.
If the defrost cycle auxiliary heater is to be used the air curtain then requires a 3

phase electrical supply (3L + N + E) to the air curtain instead of a 1 phase
electrical supply. A local isolator having a contact separation of at least 3mm on all
poles must be fitted in the 3 phase electrical supply and located in an accessible
position adjacent to the unit. The defrost cycle auxiliary heater will need to be
enabled during commissioning (see Section 'Design Information' and Section
'Commissioning').
The appliance must be connected using cables having an appropriate temperature

rating (heat resistant).
Ensure that the supply cables, circuit breakers and other electrical installation

equipment are correctly sized for the air curtain being installed. See Table below.
A 25mm size cable gland or conduit connector should be used for the Electrical

Supply into the air curtain. See Figure 2 showing where the electrical supply
enters the unit.
This appliance must be Earthed.

Wire in accordance with 1) or 2) in Table 3 below:

Table 3
Air Curtain
HX2-S 1000 DXE
HX2-S 1500 DXE
HX2-S 2000 DXE
HX2-S 2500 DXE
HX2-M 1000 DXE
HX2-M 1500 DXE
HX2-M 2000 DXE
HX2-M 2500 DXE
(Standard specification HX2-M units have TORIN EC Fans)
T9901105-1-1 UK
1)
Unit as supplied - defrost cycle
auxiliary heater is disabled
(230V/1ph/50Hz electrical supply from
separate local isolator)
Rated Electrical
Power Input (kW)
0.2
0.3
0.35
0.45
0.3
0.4
0.45
0.60
2)
(400V/3ph/50Hz electrical supply from
Rated Current (A)
Power Input (kW)
0.8
1.2
1.4
1.9
1.1
1.5
1.9
2.5
the defrost cycle auxiliary heater is
to be enabled during commissioning
separate local isolator)
Rated Electrical Rated Current per
4.7
7.8
9.35
11.7
4.8
7.9
9.45
11.85
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phase (A)
7.3
12.1
14.4
18.2
7.6
12.4
14.9
18.8