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E V E R Y T H I N G I S P O S S I B L E
USER GUIDE
Combi C30 & C35
When replacing any part on this appliance, use only spare parts that you can be assured
conform to the safety and performance specification that we require. Do not use
reconditioned or copy parts that have not been clearly authorised by Keston.
For the very latest copy of literature for specification and maintenance practices visit our
website www.keston.co.uk where you can download the relevant information in PDF
format.
July 2018
UIN 215417 A04
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Table of Contents
Related Manuals for Keston Combi C35
Summary of Contents for Keston Combi C35
- Page 1 When replacing any part on this appliance, use only spare parts that you can be assured conform to the safety and performance specification that we require. Do not use reconditioned or copy parts that have not been clearly authorised by Keston. For the very latest copy of literature for specification and maintenance practices visit our website www.keston.co.uk where you can download the relevant information in PDF...
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Page 2: Table Of Contents
Benchmark Commissioning Checklist. You can check your installer by calling Gas Safe Register direct on 0800 4085500. Keston is a member of the Benchmark scheme and fully supports the aims of the programme. Benchmark has been introduced to improve the standards of installation and commissioning of central heating systems in the UK and to encourage the regular servicing of all central heating systems to ensure safety and efficiency. -
Page 3: Introduction
IMPORTANT NOTES • This appliance must not be operated without the casing The Keston Combi C is a combination boiler providing both correctly fitted and forming an adequate seal. central heating and instantaneous domestic hot water. Featuring full sequence automatic ignition and fan assisted combustion. -
Page 4: Boiler Operation
BOILER OPERATION Legend A. Domestic Hot Water Temperature Knob BOILER B. Central Heating Temperature Knob C. Mode Knob D. Boiler Status Display HOT WATER CENTRAL HEATING MODE E. Burner ‘on’ Indicator F. Central Heating Economy Setting G. Pressure Gauge H. Restart Button I. -
Page 5: Operation Modes
OPERATION MODES “PREHEAT” button to ‘PREHEAT OFF’. Winter Conditions - (Central Heating and Domestic Hot Water CONTROL OF WATER TEMPERATURE required) Domestic Hot Water Set the mode knob (C) ‘ ’ (winter). The domestic hot water temperature is limited by the boiler The boiler will fire and supply heat to the radiators. -
Page 6: Efficient Heating System Operation
EFFICIENT HEATING SYSTEM OPERATION BOILER FROST PROTECTION The boiler is a high efficiency, condensing appliance which The boiler is fitted with frost protection that operates in all will automatically adjust its output to match the demand for modes, provided the power supply to the boiler is always heat. -
Page 7: System Water Pressure
3. SYSTEM WATER PRESSURE The system pressure gauge (G - see page 4) indicates the central heating system pressure. If the pressure is seen to fall below the original installation pressure of 1-2 bar over a period of time and continue to fall then a water leak may be indicated. In this event re-pressurise the system as shown below. -
Page 8: Condensate Drain
4. CONDENSATE DRAIN Apply a hot water bottle, microwaveable heat pack or a This appliance is fitted with a siphonic condensate trap system warm damp cloth to the frozen blockage area. Several that reduces the risk of the appliance condensate from freezing. applications may have to be made before it fully defrosts. -
Page 9: General Information
5. GENERAL INFORMATION ESCAPE OF GAS Should a gas leak or fault be suspected contact the National Gas BOILER PUMP Emergency Service without delay. Telephone 0800 111 999. The boiler pump will operate briefly as a self-check once every Ensure that; 24 hours, regardless of system demand. -
Page 10: Points For The Boiler User
FOR ANY QUERIES PLEASE RING THE KESTON CONSUMER HELPLINE : 01482 443005 NOTE. BOILER RESTART PROCEDURE - To restart boiler, press the Restart button. -
Page 11: Troubleshooting
If “Boiler off” is displayed Does the boiler operate and section then contact Keston Customer provide central heating? S e r v i c e s H e l p l i n e i f y o u r... -
Page 12: Display Functions - Normal Operation
7. DISPLAY FUNCTIONS - NORMAL OPERATION MODE Note. The temperatures shown below are for illustration purposes only. The measured temperatures will be shown on the boiler. Mode Knob in “BOILER OFF” Domestic hot water operation position: with call for CH: Central Heating Operaton: Mode knob in “... -
Page 13: Display Functions - Settings Changed
Service required: 8. DISPLAY FUNCTIONS - SETTINGS CHANGED Note. The temperatures shown below are for illustration purposes only. The measured temperatures will be shown on the boiler. Pre-Heat DHW temperature knob moved: If preheat is switched on, then the boiler will periodically fire the burner. -
Page 14: Display Functions - Fault Messages
9. DISPLAY FUNCTIONS - FAULT MESSAGES BOILER DISPLAY MESSAGE ACTION Restart the appliance - if the boiler fails to operate then please contact Keston (if under Outside Sensor Fault warranty) or alternatively a Gas Safe Registered Engineer if outside of the warranty period. - Page 15 9. (CONT’D) DISPLAY FUNCTIONS - FAULT MESSAGES BOILER DISPLAY MESSAGE ACTION Restart the appliance - if the boiler fails to operate then please contact Keston (if under Flame on Before Gas On warranty) or alternatively a Gas Safe Registered Engineer if outside of the warranty period.
- Page 16 Check system pressure is between 1 & 1.5 bar on the pressure gauge. Restart the appliance. Overheat Lockout 1/4 If the boiler fails to operate then pelase contact Keston (if under warranty) or alternatively a With Boiler Off & Gas Safe Registered Engineer if outside of the warranty period. In IE contact a Registered System Cold Gas Installer (RGII).
- Page 17 Menu Fan Fault Restart the appliance - if the boiler fails to operate then please contact Keston (if under warranty) or alternatively a Gas Safe Registered Engineer if outside of the warranty period. In IE contact a Registered Gas Installer (RGII).
- Page 18 9. (CONT’D) DISPLAY FUNCTIONS - FAULT MESSAGES BOILER DISPLAY MESSAGE ACTION Restart the appliance - if the boiler fails to operate then plese contact Keston (if under Flow Thermistor Fault warranty) or alternatively a Gas Safe Registered Engineer if outside of the warranty period.
- Page 20 Keston Heating pursues a policy of continuing improvement in the design and performance of its products. The right is therefore reserved to vary specification without notice. Keston Heating, PO Box 103, National Avenue, Kingston Upon Hull, HU5 4JN Tel 01482 443005 Fax 01482 467133 Email info@keston.co.uk...