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attached to the drain tray inside the air curtain so a condensate sensor can be fixed in the
tray by the installer. The hole can be enlarged, if necessary, to suit the type of sensor used
so it is located in the tray at the appropriate position, see the manufacturer’s instructions
that come with the condensate pump for further information. The 230v AC, single phase
electrical supply to operate the condensate pump will come from the air curtain.
Warning:
The air curtain condensate collection system is designed to remove condensate
with the air curtain operating in cooling mode during normal summer weather conditions in
countries with a temperate climate. In case of extreme weather conditions or condensate
pump failure, which can occur, it is vital that the design of the floor beneath the air curtain
and its surface is such that it will not become slippery or damaged if it became wet. This is
similar to the conditions that might be experienced with heavy rainfall or wet pedestrian
foot traffic at an open doorway, so careful consideration must be paid to the design of the
floor and its finish.
If it is intended that the air curtain should not be operated in cooling mode and a
condensate pump is not fitted, the BMS System, Centralised Controller or PAR-21MAA
manual Remote Controller must be configured at commissioning so that COOL or AUTO
mode can never be selected (see Section – Commissioning). It is still recommended,
however, that the floor design and surface be as described above in case cooling mode is
used in the future and to cope with heavy rainfall or wet pedestrian foot traffic.
Note:
It could still be possible for an end user to unlock a PAR-21MAA Remote Controller
if they found out how to and switch it into cooling, not realising that condensate would then
flood out of the drain tray. It may therefore be considered prudent to install a condensate
pump and drain system even if it is intended that the unit should only be used in HEAT or
FAN mode.
If a Building Management System (BMS) or Centralised Controller is to be used for control
of the air curtain please contact Mitsubishi Electric for more details.
The air curtain is designed only for use with a Mitsubishi Electric City Multi VRF system for
use on R410A. The complete Thermoscreens/Mitsubishi Electric heat pump system,
including fridge pipework, wiring, controls, etc. must be installed only by an approved
Mitsubishi Electric refrigeration contractor.
The air curtain is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge, unless they
have been given supervision or instruction concerning the use of the appliance by a
person responsible for their safety.
High Output (HO) and Low Output (LO) in this document refers to the heat pump heating
or cooling capacity of the Air Curtain, not to any electrical rating. HO air curtains have a 3-
row coil, LO air curtains have a 2-row coil.
These instructions must be read in conjunction with the Mitsubishi Electric instructions that
come with other components of the heat pump system, e.g. Compressor Unit, BC
Controller, PAR-21MAA Remote Controller, BMS System, Centralised Controller, etc.
They should be kept by the building facilities manager for future reference.
