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Page 8 of 21
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230V/1ph/50Hz
if defrost electric heaters are not used
400V/3ph/50Hz
if defrost electric heaters are required
Air Curtain
Rated Electrical
Power Input (kW)
Rated Current (A)
Rated Electrical
Power Input (kW)
Rated Current per
phase (A)
PHV1000 DXE HO
0.3 1.3 4.8 7.8
PHV1500 DXE LO
0.35 1.8 7.8 12.7
PHV1500 DXE HO
0.35 1.8 7.8 12.7
PHV2000 DXE LO
0.5 2.7 9.5 15.7
PHV2000 DXE HO
0.5 2.7 9.5 15.7
If the defrost electric heaters are to be disabled this can be
done by disconnecting the neutral wire (blue or purple) from
terminal A2 on the contactor inside the air curtain. The
disconnected wire should be terminated safely into unused
auxiliary terminal
14NO
as shown in the adjacent picture, or
into a suitable terminal block (see also wiring diagram on
Page 10).
Note:
If the defrost electric heaters are disconnected,
discharge air temperatures could be very cold, approximately
6ºC. Defrost times could also be extended.
Wiring to the air curtain should be carried out in accordance with the wiring diagram on
Page 10 and IEE Regulations. The figure below shows the completed wiring for a 3
phase electrical supply if the defrost electric heaters are required.
1) Connection from Mitsubishi Electric
Outdoor Unit
Connections to terminals S2 and S3 provide a
communications link between the Mitsubishi
Electric Outdoor Unit and the Air Curtain. S1 in
the Mitsubishi Electric Outdoor Unit is not used
at all for this Air Curtain Indoor Unit.
2) Connecting a 400V/3ph/50Hz supply
Connect to terminals L1, L2, L3, N and E with
a 3-phase electrical supply. This will power the
electric heating elements during the defrost
cycle, air curtain fans and the Mitsubishi
Electric interface pcb.
Connecting a 230V/1ph/50Hz supply
Connect to terminals L1, N and E with a 1-
phase electrical supply. This will power the air
curtain fans and the Mitsubishi Electric
interface pcb.
NB
. Electric heaters must be
disabled !!
3) Connection from Manual Room Control (required only for manual control)
To comply with IEE regulations two separate 2-core, 230v mains rated double
insulated cables of different colours should be used to wire from the manual room
control. One 2-core cable is wired to terminals 1 & 2 (Heat Setting - signal voltage).
The other 2-core cable is wired to terminals 3 & 4 (On/Off switch - 230v).
