HAMWORTHY HEATING LTD
55
MILBORNE
500001130/J
APPENDIX A - GAS DATA
Natural Gas - A1
GAS DATA
381
382
501
502
Gas Inlet Connection Pipe Thread Size
1 - G3/4” 2 - G 3/4” 1 - G3/4” 2 - G 3/4”
Nominal Gas Inlet Pressure
-
mbar
20
Maximum Gas Inlet Pressure
-
mbar
25
Gas Flow Rate (maximum)
-
m
3
/h
3.55
7.1
4.74
9.48
Target CO
2
% at Low fire ±0.2%
8.3 - 8.5
Target CO
2
% at High fire ±0.2%
9.2 - 9.4
GENERAL DATA
Milborne - condensing
BOILER MODEL
Model - Condensing
381
382
501
502
Boiler Input (maximum)
- kW (Gross) 37.5
75
50
100
Boiler Input (maximum)
- kW (Nett)
33.8
67.5
45
90
Boiler Output kW (maximum) condensing 50/30°C
- kW
36.5
73
48.5
96.8
Boiler Output kW (maximum) non condensing 80/60°C - kW
32.5
65
44.2
88.3
Boiler Module Output (minimum)
- kW
11
15
LPG Propane - A2
A2.1 Conversion to LPG Propane
Note:
It is strongly recommended that, on LPG installations, gas detection equipment is fitted. This equipment
should be positioned near the boiler and at low level. It is important that the space housing the boiler is
adequately ventilated at high and low level - refer to Appendix D.
For single module installations, ie 1 x Milborne 381 / 501, the boiler must not be installed in a room or
compartment located below ground level. BS6798.
For multiple module installations, ie 1 x Milborne 382 / 502 or greater, the boiler must not be installed in a plant
room located below ground level. BS6644.
GENERAL DATA
Milborne - condensing
BOILER MODEL
Model - Condensing
381
382
501
502
Boiler Input (maximum)
- kW (Gross) 37.5
75
50
100
Boiler Input (maximum)
- kW (Nett)
34.6
69.1
45
90
Boiler Output kW (maximum) condensing 50/30°C
- kW
36.4
72.6
48.5
96.8
Boiler Output kW (maximum) non condensing 80/60°C - kW
33.2
66.4
44.2
88.3
Boiler Module Output (minimum)
- kW
11
15
GAS DATA
381
382
501
502
Nominal Gas Inlet Pressure
-
mbar
37.5
Maximum Gas Inlet Pressure
-
mbar
50
Gas Flow Rate (maximum)
-
m
3
/h
1.4
2.8
1.9
3.8
Target CO
2
% at Low fire ±0.2%
8.6 - 8.9
Target CO
2
% at High fire ±0.2%
10.2 - 10.4
LPG orifice diameter - mm
6.50
