Thermoscreens Air curtain system Installation, Operation & Maintenance Instructions Manual page 17

2) If the defrost cycle auxiliary heater is to be
enabled during site commissioning, see Wiring
Diagram 2, Page 19
(400V/3ph/50Hz electrical supply from separate
local isolator)
Connect to terminals Earth, L1, L2, L3 and N with a 3-
phase electrical supply.
Connect a Mitsubishi Electric PAR-30MAA Remote
Controller to terminals 1 and 2 on the air curtain, or a
PAR-F27MEA to terminals M1 and M2.
Connect the M-Net 2-core cable to terminals M1 and
M2 on the air curtain – this is the communication link
between the City Multi system and the air curtain.
If required the defrost cycle auxiliary heater can be enabled
by disconnecting the neutral wire (violet) from the auxiliary
terminal
14NO
wire is then connected onto terminal A2 on the contactor
as shown in the adjacent picture (see also Wiring Diagram 2
on Page 19).
Recommended wire sizes for electrical connections are as follows:
1-phase electrical supply from separate local isolator
3-phase electrical supply from separate local isolator - if the
defrost cycle auxiliary heater is to be enabled
Mitsubishi Electric PAR-30MAA or PAR-27MEA Remote
Controller (2-core cable)
Mitsubishi Electric M-Net (2-core cable)
Door switch to change fan speeds as door opens and shuts
T9901078-1 UK
on the contactor inside the air curtain. This
Electrical Connection Wire Size
2
2.5mm max. for access
2
2.5mm max. for access
2
0.75mm
2
0.75mm
2
0.75mm
Page 17 of 36