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Selecting the Fan Speeds of the Air Curtain –
The fan motor(s) in the air curtain is a 5-speed 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-U02MEDA
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 provides guidance as to how the fan speeds can be set.
Table 4
Fan Speed
Motor Speed
(air curtain
as
(see Wiring Diagram)
delivered)
HIGH
(black wire)
1 – (Highest speed)
MEDIUM
(blue wire)
LOW
(yellow wire)
5 – (Lowest speed)
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).
T9901075-2-3 UK
motor tapping:-
Maximum air curtain
Tapping
mounting height
2
3
4
AC Fans
5 4 3 2 1
Sound Pressure
Level of air curtain
(m)
HP1000 DXE - 57
3.2
HP1500 DXE - 56
HP2000 DXE - 57
HP1000 DXE - 56
2.8
HP1500 DXE - 54
HP2000 DXE - 56
HP1000 DXE - 54
2.4
HP1500 DXE - 52
HP2000 DXE - 54
HP1000 DXE - 51
2.0
HP1500 DXE - 49
HP2000 DXE - 51
HP1000 DXE - 47
1.8
HP1500 DXE - 45
HP2000 DXE - 47
Air Volume
Flow Rate
[dB(A) at 3m]
Page 25 of 38
3
(m
/h)
1310
2070
2590
1250
1860
2480
1170
1750
2340
1030
1460
2070
900
1240
1810
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