1801UDSBD-4E,--EN, Pag. 6/35
Table 4b : Technical data
UDSBD-4E
015
020
025
030
035
043
050
055
064
Gas category
see table 4a
Comb. Air & Flue, type B instal.
1
B22
Comb. Air & Flue, type C instal.
1
C12, C32, C42, C52, C62, C82
Flue & combustion air connection collars
mm
80
80
100
100
100
100
100
130
130
Heat input (Hs)
kW
17,6
22
30,8 35,2 42,2 50,8 58,6
66
77,7
Heat input (Hi)
kW
15,9 19,8 27,8 31,7
38
45,8 52,8 59,5
70
Heat output
kW
14,6 18,2 25,5 29,2 34,9 42,1 48,6 54,7 64,4
Thermal efficiency
%
92
92
92
92
92
92
92
92
92
Gas consumption rate
Nat. gas G20
m
3
/h
1,68
2,1
2,94 3,36 4,02 4,85 5,59
6,3
7,41
Prop. G31
kg/h
1,24 1,55 2,16 2,47 2,96 3,57 4,12 4,64 5,46
Gas connection size (not supply line size)
2
1/2”
3/4”
Temperature rise
3
K
20
23
27
25
25
31
29
30
32
Airflow
3
m
3
/h
2150 2350 2750 3360 4080 3900 4900 5300 5930
Nominal motor speed
rpm
950
950 1430 1430 950
950
950
950
950
Standard low, mid or high speed
mid
high
low
mid
low
low
mid
mid
high
Recommanded mounting height
4
m
3,5
4
4,5
4,5
5,5
5,5
6
6
6
Horizontal air throw
5
m
18
23
26
26
32
34
38
38
38
Sound pressure
6
dB(A)
50
52
47
51
46
47
52
50
53
Sound pressure
7
dB(A)
57
58
54
58
53
54
59
57
60
Electrical service (protection class
IP20)
230/240V 1N ~ 50 Hz
Total electrical rating
W
496
496 1662 1662 1700 1700 1700 1700 1700
1) Gas Appliance Classifications for Approved Venting Methods based on CEN-report CR1749:2001.
2) There is a difference between the gas connection diameter and the diameter of the supply line. Always use the most adequate diameter of the supply
line to minimize the pressure drop through the gas pipes - if necessary, reduce the diameter of the supply line at the inlet of the unit.
3) Figure for discharge louvre zero deflection.
4) Height from floor to bottom surface of heater. These are recommendations only. Positioning of unit heaters for proper performance is application
dependent. Operation is affected by other air moving equipment in the space, obstructions to the airflow, draughts and/or close proximity to doors
or windows, etc ...
Care should be taken to avoid mounting the heaters above these recommendations, unless downturn nozzle options are used,
as significant stratification may occur resulting in poor floor coverage and higher energy losses through the roof structure.
5) Isothermal cond/-20°C ambient air temperature, discharge louvres zero deflection, v = 0,5m/s. The air throw will be influenced by the height
of the building, mounting height of the unit, ambient temperature & adjustment of the louvres.
6) Sound pressure level in dB(A) in free field conditions, measured at 5 meters from the unit, free outlet
7) Sound pressure level in dB(A), measured at 5 meters from the unit with A=160m² & Q=2, free outlet
