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Bellfi res English
Installation instructions
7 TECHNICAL DETAILS/REGULATIONS
National installation regulations:
•Gas safety installation and use regulations 1998 plus all relevant
safety and building regulations concerning fi re installation
•Document J: Combustion appliances and fuel storage systems
Model : DERBY SMALL 3 CF (Centre Fire)
Gas : NATURAL GAS : BUTANE / PROPANE
Country :
GB; G
reat Britain
/IE;
Ireland :
GB; G
reat Britain
/IE;
Ireland
Product identifi cation no : 0063CM3684 : 0063CM3684
Type of appliance under CE-norm : C11 / C31 / C31S : C11 / C31 / C31S
Category of appliance : I2H natural gas G20 : I3B/P butane/propane G30/G31
Nominal heat input : 10.2 kW : Butane (G30) : 10.0 kW
(Gross calorifi c value) Propane (G31) : 8.5 kW
Nominal heat output : 7.9 kW : 6.6 - 7.7 kW
Effi ciency class : 1 (85%) : 1 (85%)
NOx-class : 5 : 5
Gas rate (max.) : 0.97 m3
s/hr. : Butane (G30) : 750 gr/hr.
Propane (G31) : 620 gr/hr.
Supply pressure : 20.0 mbar : Butane (G30) : 37.0 mbar
Propane (G31) : 37.0 mbar
Burner pressure (max.) Hot : 13.2 mbar(*) : 29.0 mbar(*)
Burner pressure (max.) Cold : 12.5 mbar(**) : 29.0 mbar(**)
Burner pressure (min.) : 1.0 mbar(***) : 1.0 mbar(***)
Primary air inlet burner Rear : 1x Ø12.0 mm : 1x Ø20.0+corner mm +
2x Ø5.0 mm
Primary air inlet burner Front : 1x Ø12.0 mm : 1x Ø20.0+corner mm +
2x Ø5.0 mm
Gas regulator block (remote control) : Mertik GV 60 : Mertik GV 60
Main burner : Centre Fire 561x130 mm : Centre Fire 561x130 mm
Main burner injector Rear : no 190 (= 1x Ø1.90 mm) : no 95 (= 1x Ø0.95 mm)
Main burner injector Front : no 190 (= 1x Ø1.90 mm) : no 125 (= 1x Ø1.25 mm)
Pilot light burner : SIT 0.145.019 : SIT 0.145.019
Pilot light burner injector : no 36 (SIT 0.977.091) : no 23 (SIT 0.977.150)
Gas connection : 3/8” G / Ø12 mm : 3/8” G / Ø12 mm
Concentric fl ue system connection : Ø100 mm - Ø150 mm or : Ø100 mm - Ø150 mm or
Ø130 mm - Ø200 mm Ø130 mm - Ø200 mm
