Technical data

4
CLEANING
The boiler casing can be cleaned with a damp cloth
followed by a dry cloth to polish.
Do not use abrasive or solvent cleaners.
BOILER CASING
CAUTION: Do not remove or adjust the casing in any
way, as incorrect fitting may result in faulty operation.
If in doubt, contact your Installer/Service Provider.
INSTALLATION INSTRUCTIONS
INTRODUCTION
The Combitek F 23 E is a wall mounted combination
boiler providing central heating and instantaneous
domestic hot water.
Note: this boiler requires no fixing jig and has top
outlet flueing only ( there is no rear flue option ).
The boiler is of the II2H3+ category for use with
Natural gas (G20). To convert to Butane (G30) or
propane (G31), the following kit is required.
Gas conversion kit :part number 86161
The boiler has a fan assisted, balanced, flue which
both discharges the product of combustion to, and
draws the combustion air from, the outside of the
building.
Accessories
A range of accessories are available including,
vertical flue components. For further information,
contact you nearest stockist.
Gas Safety (Installation and Use) Regulations
In the interests of gas safety, it is the law that ALL gas
appliances are installed and serviced in by a
competent person in accordance with the above
regulations.
Gas leak or fault
If a gas leak or fault exists or is suspected, turn off the
boiler and gas supply and consult the local gas
company or your Installer/Service Provider.
Heating output
automatically variable from 8,9 kW to 23,3 kW
30,000 BTU/H to 80,000 BTU/H
Efficiency 82,4 %
Heating adjustment 38°C to 90°C
Expansion vessel effective capacity 6,5 l
Expansion vessel charge pressure 0,5 bar
Maximum system capacity at 75°C 140 l
Safety valve, maximum service pressure 3 bar
Products outlet diameter 60 mm
Fresh air inlet diameter 100 mm
Hot water output
automatically variable from 8,9 kW to 23,3 kW
30,000 BTU/H to 80,000 BTU/H
Maximum hot water temperature 65 °C
Specific flow rate (for 35°C temp rise) 9,6 l/min
Threshold flow rate 3 l/min
Nominal water flow rate 12 l/min
Maximum supply pressure 10 bar
Minimum operating pressure 0,5 bar
Electrical supply 230 V
Maximum absorbed power 130 W
Natural Gas Butane Propane Town gas
(G20) (G30) (G31) (G130)
Burner injector 1,2 mm 0,73 mm 0,73 mm 2,4 mm
Inlet pressure 20 mbar 29 mbar 37 mbar 8 mbar
Gas rate (maximum) 2,70 m
3
/h 2,01 kg/h 1,98 kg/h 3,88 m
3
/h
Gas rate (minimum) 1,13 m
3
/h 0,84 kg/h 0,74 kg/h 1,63 m
3
/h
Heat output
(kW) 8,9 10 11 12 13 14 15 16 17 18 19 20 21 22 23,3
(Btu/h) 30387 34142 37557 40971 44385 47799 51214 54628 58042 61456 64871 68285 71699 75113 79552
Heat input
(kW) 11,9 13,2 14,4 15,7 16,9 18,1 19,2 20,4 21,5 22,7 23,8 24,9 26,0 26,9 28,3
(Btu/h) 40678 45130 49332 53481 57579 61627 65626 69575 73477 77333 81142 84906 88913 91713 96602
GAS
G 20 (mbar) 1,3 2,1 2,6 3,0 3,5 4,0 4,5 5,1 5,7 6,3 6,9 7,6 8,3 8,8 9,8
G 30 (mbar) 3,7 5,3 6,3 7,4 8,6 9,8 11,1 12,5 13,9 15,4 17,0 18,6 20,4 21,7 24,1
G 31 (mbar) 4,0 6,3 7,5 8,8 10,2 11,7 13,3 14,9 16,7 18,5 20,3 22,2 24,4 26,0 28,8
USER INSTRUCTIONS
TECHNICAL DATA