Hamworthy Sherborne Series, Installation, Commissioning And Servicing Instructions

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HAMWORTHY HEATING LTD
35
SHERBORNE 500001167/E
APPENDIX A - GAS DATA
Natural Gas
LPG Propane
NOTE: - It is strongly recommended that on LPG installations, Gas Detection Equipment is fitted. This
equipment should be positioned near the boiler & at low level. It is also important that the space housing
the boiler is adequately ventilated at High & Low level; refer to Appendix D.
There are minimal differences between the propane & natural gas fired boilers :-
a) The addition of a control orifice located in the gas valve outlet - see figure11.4
b) Warning labels are attached to indicate the use of LPG.
c) The nominal gas inlet pressure for LPG should be 37mbar.
d) The target CO
2
value is detailed in the respective table.
GAS DATA
Gas Inlet Connection Pipe Thread Size Rp 3/4”
Nominal Gas Inlet Pressure - mbar 20
Maximum Gas Inlet Pressure - mbar 25
Minimum Gas Inlet Pressure - mbar 12.5
Gas Flow Rate (maximum) - m
3
/h
Target CO
2
% at High / Low fire ±0.25% 8.7
7.4
GENERAL DATA BOILER MODEL
Model
Sherborne
SE64he
Sherborne
SE71c
Boiler Input (maximum) - kW (Gross) 77.7
Boiler Input (maximum) - kW (Nett) 70.0
Boiler Input (minimum) - kW (Gross) 15.5
Boiler Input (minimum) - kW (Nett) 14.5
Boiler Output kW (minimum) - kW
Boiler Output kW (maximum) condensing - kW - 71.3
Boiler Output (minimum) non-condensing - kW 64.0
13.6
66.6
GENERAL DATA BOILER MODEL
Model
Sherborne
SE64he
Sherborne
SE71c
Boiler Input (maximum) - kW (Gross) 76.0
Boiler Input (maximum) - kW (Nett) 70.0
Boiler Input (minimum) - kW (Gross) 15.2
Boiler Input (minimum) - kW (Nett) 14.0
Boiler Output kW (minimum) - kW
Boiler Output kW (maximum) condensing - kW - 71.4
Boiler Output (minimum) non-condensing - kW 64.0
13.6
66.5
GAS DATA
Nominal Gas Inlet Pressure - mbar 37
Maximum Gas Inlet Pressure - mbar 45
Minimum Gas Inlet Pressure - mbar 25
Gas Flow Rate (maximum) - m
3
/h (kg/h) 2.9 (5.5)
Target CO
2
% at High / Low fire ±0.25% 10.0