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If the end user is to operate the air curtain with a Remote Controller it can be set-up to
monitor room air temperature at the controller instead of return air temperature at the air
inlet of the air curtain. If this is required see the Mitsubishi Electric remote controller
instructions for details.
If it is intended that the air curtain is to ever operate in cooling mode* switch the Mode
Button on the remote controller to 'COOL' and adjust the target temperature to 14°C
using the - Temp. Button. Wait for the air curtain air stream to go cold. Check there is
no debris in the outlet spout, there are no kinks in condensate hoses and the
condensate pump (if used) will operate. It is unlikely that condensate will fill the drain
tray straight away so it will be necessary to fill the tray manually with water to see if the
condensate removal system is working satisfactorily. If an alarm sensor is fitted in the
drain tray, check it operates to stop the air curtain cooling if the drain tray becomes too
full. Test the air curtain for a time in cooling mode with all the panels and grilles fitted
and if environmental conditions permit check that condensate is being collected and
pumped away by the condensate pump. No condensate should leak out of the air
curtain. At the end of the cooling test remove the inlet grilles and the bottom access
panel and check that the inside of the air curtain has remained dry and that all
condensate was collected by the removal system.
*
For the air curtain to operate in cooling mode there must be a condensate disposal system fitted.
To conserve energy and carbon resources it is recommended to set up the Remote
Controller, BMS System or Centralised Controller so it operates in HEAT Mode at a
target temperature of 24°C. This is the normal mode of operation for the heat pump air
curtain and it should run in this set-up with no further adjustments, automatically heating
as required. If the target temperature is reached the air curtain fans will still operate but
the air stream is then not heated (ambient air curtain).
If the end user is to operate the air curtain with a remote controller, set up the No.1
locking function on the controller so they can only switch the air curtain ON or OFF, with
no control of mode or target temperatures. If there is no condensate disposal system
fitted COOL mode must be locked off on the remote controller so it cannot be used. See
instructions for the Mitsubishi Electric PAR-31MAA or PAR-U02MEDA remote
controller.
If the air curtain is to be operated from a BMS System or Centralised Controller this
should be configured such that the air curtain can only operate in HEAT or FAN mode if
it is not fitted with a condensate disposal system. The air curtain should only be
configured to operate in AUTO or COOL mode if it is fitted with a condensate disposal
system.
BEWARE: It is possible for the air curtain to go into cooling mode on a warm day if the
Remote Controller, BMS System or Centralised Controller is set in AUTO mode. A
condensate disposal system must therefore be fitted if the air curtain is to be used in
AUTO mode.
Switch off the electrical power to the Air Curtain and the Mitsubishi Electric City Multi
system. Carefully slide the Interface PCB back into place. Ensure cables are not
trapped inside and refit the retaining screw.
T9901075-2-3 UK
Page 28 of 38
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