T9901105-1-1 UK
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Setting the Fan Speeds of the Air Curtain – (HX2-S DXE)
The fan motor(s) in the HX2-S DXE air curtain is a 5-speed AC motor and fan speeds can be re-
selected at commissioning to suit the installation, both to suit the outdoor environmental conditions
and for indoor noise levels.
As delivered, for the 3 fan speeds available from the PAR-31MAA or PAR-F27MEA remote
controller:-
the HIGH fan speed (black wire) is wired into motor tapping 1 (highest motor speed tapping),
the MEDIUM fan speed (blue wire) is wired into motor tapping 3,
the LOW fan speed (yellow wire) is wired into motor tapping 5 (lowest motor speed),
Table 4 below provides guidance as to how the fan speeds can be set. WARNING: There are two
motors on the HX2-S 2000/2500DXE models, make sure both motors are wired up in exactly the
same way or the motors will overheat with possible damage.
Table 4
Fan Speed
(air curtain
as
delivered)
Motor Speed
Tapping
(see Wiring Diagram 1
or Wiring Diagram 2)
Maximum air curtain
mounting height
(m)
Sound Pressure
Level of air curtain
[dB(A) at 3m]
Air Volume
Flow Rate
(m
3
/h)
HIGH
(black wire)
1 – (Highest speed)
3.2
HX2-S 1000DXE – 53
HX2-S 1500DXE – 53
HX2-S 2000DXE – 54
HX2-S 2500DXE – 54
1310
2070
2590
3070
2
2.8
HX2-S 1000DXE – 52
HX2-S 1500DXE – 52
HX2-S 2000DXE – 53
HX2-S 2500DXE – 53
1250
1900
2480
2820
MEDIUM
(blue wire)
3
2.4
HX2-S 1000DXE – 51
HX2-S 1500DXE – 51
HX2-S 2000DXE – 52
HX2-S 2500DXE – 52
1170
1800
2340
2530
4
2.0
HX2-S 1000DXE – 49
HX2-S 1500DXE – 49
HX2-S 2000DXE – 50
HX2-S 2500DXE – 50
1030
1460
2070
2150
LOW
(yellow wire)
5 – (Lowest speed)
1.8
HX2-S 1000DXE – 45
HX2-S 1500DXE – 45
HX2-S 2000DXE – 46
HX2-S 2500DXE – 46
900
1240
1810
1900
See also Section, Installation; ‘Wiring of Air Curtain Fan Speed’ giving details of how to wire in fan speeds.
Sound pressure levels dB(A) at 3m distance are for a single air curtain mounted at its maximum mounting height, operating in a room
with average acoustic characteristics as defined in CIBSE Guide B5 (reverberation time 0.7s at 1kHz) and a room size equivalent to 8
air changes per hour (ac/h). Care needs to be taken when selecting air curtains for an installation as noise levels can be several dB
higher if the mounting height is reduced, if the room is more ‘live’ (i.e. hard surfaces, no furnishings or absorbent materials), if the room
is smaller than 8 ac/h equivalent or a combination of these factors. Noise levels will also increase if more than one air curtain is
installed at the same doorway (e.g. +3dB(A) for 2 equal point sources: direct field).
motor tapping:- 5 4 3 2 1
