32
MODEL
NAT GAS / LPG
50
72
HEAT
OUTPUT
kW
Btu
49.0
167,000
72.0
246,000
HEAT
INPUT (NET)
kW
Btu
53.3
181,700
78.8
268,900
% Net
92.0
91.4
% Gross
82.8
82.3
HEAT
OUTPUT Low Fire
kW
Btu
23.6
80,800
34.9
119,100
HEAT
INPUT (NET) LOW FIRE
kW
Btu
26.7
91,200
39.4
134,500
GAS CONNECTION
BSP/Rc
1/2”
3/4”
MIN INLET
PRESS NAT GAS
mbar
Ins WG
17.5
7
17.5
7
BURNER
PRESSURE NATURAL GAS
mbar
Ins WG
8.3
3.3
8.7
3.5
BURNER PRESSURE NATURAL
GAS Hi/Low/Modulation
Hi mbar
Lo mbar
8.3
2.1
8.7
2.3
MAIN INJECTOR
NATURAL GAS
mm
No Off
2.2
10
3.4
6
NATURAL GAS
CONSUMPTION
ft
3
/hr
m
3
/hr
199
5.63
294
8.33
MINIMUM INLET
PRESSURE LPG
mbar
Ins WG
37.0
14.8
37.0
14.8
BURNER
PRESSURE LPG
mbar
Ins WG
29.2
11.68
25.5
10.2
LPG
CONSUMPTION
m
3
/hr
Kg/h
2.16
4.00
3.21
5.94
MAIN INJECTOR
LPG
mm
No Off
1.3
10
2.0
6
TEMPERATURE RISE
ºC
ºF
33
59
32
58
FLUE DIAMETER
mm
100
130
COMBUSTION AIR DIAMETER
mm
100
130
SUPPLY VOLTAGE
V/P/Hz
230/1/50
230/1/50
ELECTRICAL POWER
amps
0.6
1.1
INTERNAL MCB
amps
6
6
GROSS FLUE TEMPERATURE
ºC
150
150
WEIGHT (APPROX)
Kgs
113
168
FLUE
RESISTANCE
min mbar
max mbar
-0.1
+0.2
-0.2
+0.4
EFFICIENCY
Technical Data
- models DM 50 & 72
6. Commissioning & Testing cont.