Keston C36 Installation Manual

C36 CombiUser, Installation and Servicing Instructions FAN POWERED HIGH EFFICIENCY MODULATING DOMESTIC CONDENSING GAS COMBINATION BOILER CE/PI No. 86

system and burns witha blue flame just off thesurface of the burner.As the hot products ofcombustion passdownwards, they arecooled by e

around 5oC to 10oC above the temperature of the return water. The flue pipe should beterminated outside the building from where they cannot re-ent

For Timber Framed Buildings, British Gas Publications DM2. Also British GasPublications 'Guidance Notes For The Installation Of Domest

Description Part NumberPre-Installation Jig Plate C.10C.0.11.00.0Flue Terminal Wall Sealing Collar (50mm) C.08.0.00.07.0Air Terminal Wall Sealing Coll

Seasonal Efficiency (SEDBUK) =90.7 (C36 Combi) & 92.8 (C36P Combi)This value is used in the UK Government's Standard Assessment Pro

3. BOILER LOCATION3.1 DIMENSIONS AND MINIMUMCLEARANCESThe boiler must be installed in minimumclearances shown to allow subsequentservicing,

applicable in Scotland, with respect to the installation of the boiler in a room or internalspace containing a bath or shower.Where a room-s

The method of connection to the mains electricity supply must facilitate completeelectrical isolation of the boiler, preferably by the use of a fused,

Gas pressures above or below these levels will lead to problems associated with the gasvalve's internal pressure regulator.Supply pipes to the b

k. The boiler is supplied with an integral expansion vessel of 8l capacity. This issuitable for systems of up to 125 Litres syste

CONTENTSNB : These instructions are an integral part of the appliance. This document must be handed over tothe user on completion of the installation

driven out of the solution and willcollect in high spots in thesystem. These air bubbles caninterfere with pumping andheat transfer and mus

3.8 FLUE SYSTEMNB: When installing a replacement boiler a new flue system must be used. Donot re-use the existing boiler flue installation.3.8.

There must be no troughs in any of thepipework, whether it be air inlet or flue outlet.Due the low temperature of the flue gases furthercon

It is advisable for horizontal flue terminals to place a 45o elbow at the end of theflue to direct the condensate plume up and away from the

A minimum slope downwards towards the drain of 1 in 20 is essential. Freezing of thetermination and pipework must be prevented. A

4. INSTALLATION OF THE BOILERRead Chapter 3 - Boiler Location and decide upon the position of the boiler.Installation of the boiler is straightforward

4.3 ASSEMBLY PRACTICERemove all plastic debris and burrs when installing air intake piping. Plastic filings causedby cutting muPVC pipe must not be al

iii) replace the nut from the frame bottomConnect the condensate drainage system to the boiler. It is advisable to use a detachablefitting at connecti

4. Securely tighten the terminal screws and route the cable(s) through there-openable cable clips. Ensure all cables are secured and that th

5. COMMISSIONING OF THE BOILERImportant: This condensing combination boiler contains components which could be damaged or blocked by grease, dirt,

5.7 Combustion Testing5.8 Checking The Gas Pressure5.9 Timing The Gas Meter5.10 Handing Over To The User6 FAULT FINDING6.1 Electrical Control Sequence

flow temperature of the boiler. Also press the “Summer” button until the greenlight above this button is extinguished. Once a heating dema

used during manufacture curing withinthe combustion chamber. On boilerswhich have been fired for more than onehour since installation, the

5.9 TIMING THE GAS METERSet the boiler DHW temperature to 65C and open two hot taps in the property fully. Withno other appliances using gas, time the

6. FAULT FINDING6.1 ELECTRICAL CONTROL SEQUENCE6.1.1 HEATING DEMANDWhen the external control(s) are calling for heat, power will be fed to the boiler

QUICK REFERENCE6.2 NORMAL OPERATIONThe C36 Combi and C36P Combiboilers feature a user displaywhich shows actual flowtemperature at all times wh

ERROR CODESAs E41E99Flue sensor open circuit - check connections to flue sensor are in placeE46Flue sensor short circuit - check connections to flue s

6.4 FUNCTIONAL FLOW WIRING DIAGRAMWD388/0/2004 Chapter 6 : Fault Finding The Keston C36 & C36P Combi BoilersInstallation & Servicing Instru

6.5 ELECTRICAL WIRING DIAGRAMWD388/0/2004 Chapter 6 : Fault Finding The Keston C36 & C36P Combi BoilersInstallation & Servicing Instructions

6.6 ILLUSTRATED WIRING DIAGRAMWD388/0/2004 Chapter 6 : Fault Finding The Keston C36 & C36P Combi BoilersInstallation & Servicing Instruction

6.7 Exploded Assembly Diagrams6.7.1 Boiler Controls Assembly WD388/0/2004 Chapter 6 : Fault Finding The Keston C36 & C36P Combi BoilersInstallat

0. HANDLING INSTRUCTIONS0.1 LIST OF CONTENTSThe Keston C36 Combi and C36P Combi are supplied almost totally pre-assembled. The unitsuse standard 50 mm

6.7.2 Waterway, Condensate & Flue AssemblyWD388/0/2004 Chapter 6 : Fault Finding The Keston C36 & C36P Combi BoilersInstallation & Servi

WD388/0/2004 Chapter 6 : Fault Finding The Keston C36 & C36P Combi BoilersInstallation & Servicing Instructions Page : 3657-25656395657

6.7.3 Air - Gas AssemblyWD388/0/2004 Chapter 6 : Fault Finding The Keston C36 & C36P Combi BoilersInstallation & Servicing Instructions Page

6.7.4 Casing AssemblyWD388/0/2004 Chapter 6 : Fault Finding The Keston C36 & C36P Combi BoilersInstallation & Servicing Instructions Page :

6.7.5 Exploded Diagrams Parts Reference ListBoiler Controls Assembly (Fig. 6.7.1)GC Number Code Description135 Main Control Box (C.10C.4.01.00.0 B)13

7. ROUTINE (ANNUAL) SERVICINGTo ensure the continued safe and efficient operation of the boiler it is necessary to carry outroutine s

d. If necessary, from visual inspection, clean the heat exchanger using a suitablestiff plastic bristle brush, vacuum out any large particles and flus

8. REPLACEMENT OF PARTSCONTENTS8.0 GENERAL8.1 PRECAUTIONS8.2 ACCESS8.3 REPLACEMENT PROCEDURE8.4 ELECTRICAL COMPONENTS8.4.1 CONTROL PANEL8.4.2 BOILER F

8.4.2 Boiler Flow and Return Thermistors (Fig. 6.7.2 - 2/3 item 67)i) Isolate the appliance (Section 8.1)ii) Gain access (Section 8.2)iii) Remove the

NB: When reassembling inspect any gaskets for damage and replace ifnecessary.8.4.8 Gas Control Valve /Venturi Assembly (Fig. 6.7.3 item 215)i) Isolate

side. At this stage it is assumed that the wall bracket is correctly positioned and secured onthe wall face.a) Have the wall bracket nut and washer to

iii) Remove the combustion blower (Section 8.4.7)iv) Remove the 4 nuts fixing the burner to the top of the heat exchanger.v) Withdraw the burner from

ii) Gain Access (section 8.2)iii) Shut off the water supply (CWS) to the DHW heat exchanger.iv) Isolate the waterways to the pump using the system iso

9. SHORT SPARE PARTS LISTItem GC No Part Denomination Item GC No PartDenomination46 Burner 161 Burner Gasket49 Ignitor Gasket 48 Ignitor/Sensor Probe

215 C36 Combi Gas Valve - Mixer Assem. 119 FanC36P Combi Gas Valve - Mixer Assem.135 Control Box 138 Fascia Panel56 Pump Block 57 DHW Heat Exchanger58

SHORT SPARE PARTS LIST FOR THE KESTONCONDENSING BOILER RANGEItem GC No Part Denomination46 Burner161 Burner Gasket48 Ignitor49 Ignitor Gasket108 DHW T

WD388/0/2004 Chapter 10 : Benchmark Checklist Final The Keston C36 Combi & C36P COMBI Boilers Installation & Servicing Instructions

WD388/0/2004 Chapter 10 : Benchmark Checklist Final The Keston C36 Combi & C36P COMBI Boilers Installation & Servicing Instructions

bRead Installation Manual CarefullybEnsure that ALL dust particles, filings , plastic chips etc. areremoved from the inlet pipe.bIf the i

1. USER INSTRUCTIONS1.1 INTRODUCTIONThank you for choosing this Keston C36 Combi for your household heating and hot waterneeds. The bo

Normal OperationDuring normal operation the digital display will dhow the current boiler temperature and willshow a “.” In the lower right

your installer at the end of the installation and commissioning process. The details of theChecklist will be required in the event

2. GENERAL INSTRUCTION2.1 DESCRIPTIONThe KESTON C36 Combi and C36P Combi combination boilers utilise the latest incondensing technology to