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July 2016

UIN 215348 A01

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.

FAN POWERED HIGH EFFICIENCY

MODULATING DOMESTIC CONDENSING

GAS COMBINATION BOILER

Installation and Servicing Instructions

Содержание Combi C30

Страница 1: ...re 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 kesto...

Страница 2: ...d P4 kW 24 2 24 2 Part Load P1 kW 7 9 7 9 Auxiliary Electricity Consumption Full Load elmax kW 0 032 0 042 Part Load elmin kW 0 013 0 013 Standby PSB kW 0 005 0 005 Seasonal Space Heating Energy Effic...

Страница 3: ...ass VII Class VIII 1 2 1 5 2 3 4 3 5 5 PRODUCT FICHE The energy efficiency of the package of products provided for in this document may not correspond to its actual energy efficiency once installed in...

Страница 4: ...4 Installation and Servicing...

Страница 5: ...NT AMENDMENTS Keston reserve the right to vary specification without notice FOR ANY TECHNICAL QUERIES PLEASE RING THE KESTON INSTALLER TECHNICAL HELPLINE 01482 443005 NOTE BOILER RESTART PROCEDURE Pre...

Страница 6: ...6 Installation and Servicing...

Страница 7: ...Removal Replacement 44 3 3 Fan And Venturi Assembly Removal And Cleaning 44 3 4 Burner Removal And Cleaning 45 3 5 Cleaning The Condensate Trap Siphon 45 3 6 Cleaning The Heat Exchanger 46 3 7 Reasse...

Страница 8: ...e the gross heat input kW by the gross C V of the gas MJ m3 b For Btu h multiply the gross heat input kW by 26 8 c For ft3 h divide the gross heat input Btu h by the gross C V of the gas Btu ft3 d For...

Страница 9: ...ecord Cold water inlet temp measure record Hot water outlet temp measure record Water flow rate at max setting measure record For condensing boilers only Condensate drain 26 For all boilers complete s...

Страница 10: ...nob is in the ON period When there is a demand for CH the heating system is supplied at the selected temperature of between 30o C and 80o C until DHW is drawn off The full output from the boiler is th...

Страница 11: ...ol device not approved by Keston could invalidate the certification and the normal appliance warranty It could also infringe the Gas Safety Regulations and the above regulations 1 6 SAFE HANDLING OF S...

Страница 12: ...s from the boiler before connection to any plastic piping The central heating system should be in accordance with BS 6798 and in addition for smallbore and microbore systems BS 5449 WATER TREATMENT se...

Страница 13: ...er connection tails Refer to Section 2 15 The following minimum clearances must be maintained for operation and servicing Additional space will be required for installation depending upon site conditi...

Страница 14: ...ximum cold water capacity of the system should not exceed 143 litres if not pressurized However if the system is to be pressurized the efficiency of the expansion vessel will be reduced and a larger v...

Страница 15: ...ent products which must be used in accordance with the manufacturers instructions Notes 1 It is most important that the correct concentration of the water treatment products is maintained in accordanc...

Страница 16: ...9 Return Group Manifold 120 Flow Group Manifold 121 Plate Heat Exchanger 124 Flow Regulator 127 Flow Sensor Turbine 131 Water Pressure Switch 135 Pressure Gauge 203 Gas Cock 204 Pipe Gas Inlet 205 Gas...

Страница 17: ...8 5 x 11 x 11 8 x2 6 Pipe DHW Outlet 7 Pipe DHW Inlet 8 Valve DHW Inlet Accessory Pack 1 Screw x2 2 Wallplug x2 3 Turret Clamp Screw spare Flow Valve Pack 1 Pipe CH Flow 2 Washer CH 3 Valve Flow 1 1 1...

Страница 18: ...Polypipe Terrain 200 muPVC Solvent Weld System 50mm to BS5255 and or BSEN1566 11 and BSEN1329 are the only systems approved for this application The following pipe and fittings are approved Polypipe S...

Страница 19: ...e the terminals fitted and the air intake comply with the dimensions above MAXIMUM LENGTHS Due to the resistance presented by extended flue length a slight reduction in maximum boiler output will occu...

Страница 20: ...t every 1 metre Flue 3 x 90 elbows 3 Straight lengths 2 5 1 5 3 5 4 14 5 Overall Flue Air 30 15m Air 4 x 90 elbows 4 Straight lengths 2 2 3 5 4 0 15 15 65 Calculations 2 4 6 8 10 12 14 16 18 20 22 24...

Страница 21: ...ose of accommodating a built in element such as a window frame The dimensions given in the table above may need to be increased to avoid wall staining and nuisance depending on site conditions boundar...

Страница 22: ...e air and flue connections Care MUST be taken to ensure the correct holes are drilled 1 Tape template into the selected position Ensure squareness by hanging a plumbline as shown 2 Mark onto the wall...

Страница 23: ...h the 2 screws provided Choose one of the 2 sets of slots in left and right bank Ensuring that at least one of the screws is fitted into a top slot 2 11 MOUNTING THE BOILER 1 Ensure the plastic plugs...

Страница 24: ...and check the air and flue pipes to pass to the exit from the wall s or ceiling Always thoroughly deburr all pipes and most important remove shavings from within the pipe Assemble using solvent weld...

Страница 25: ...match wall thickness remove burrs 4 Grout sleeve into wall with flange on external face 5 Slide flue pipe into sleeve checking it is free to slide 6 Slide Flexible wall seal over flue pipe and push ce...

Страница 26: ...ns Wherever possible the condensate drainage pipe should be routed to drain by gravity to a suitable internal foul water discharge point such as an internal soil and vent stack or kitchen or bathroom...

Страница 27: ...to 3 storeys Soil vent stack 450 Boiler with 75mm sealed condensate trap Min 19mm Internal pipe Min 30mm Internal pipe Water weather proof insulation 75 Boilers without 75mm sealed condensate trap mu...

Страница 28: ...ection ensuring the seal provided is correctly located 2 Fit the DHW outlet pipe tail to DHW outlet connection ensuring the seal provided is correctly located 3 Fit the filling loop provided between t...

Страница 29: ...en 1 to1 5 bar turn the filling loop handle blue B back to the closed vertical position 6 Turn the CH Return handle black C and the DHW Inlet handle blue A to the open vertical position 7 Disconnect t...

Страница 30: ...ble to the user after installation 2 17 INSTALLER WIRING The Logic boiler comes pre fitted with 1 8m of mains cable This must be connected to a permanent live supply and NOT switched by thermostats pr...

Страница 31: ...er link socket from the aperture on the rear of the control box locate the plug on the same harness branch and connect these together 3 Using the rubber bung located adjacent to these connections inse...

Страница 32: ...clockwise decreases the room temperature If the Central Heating Temperature Control Knob is rotated fully clockwise then for an Outside Temperature of 15 C a Flow Temperature of 40 C will be provided...

Страница 33: ...to avoid direct radiation from the sun The air sensor should be located to avoid any heating effect from the boiler flue To fix the air sensor to the wall unscrew the sensor box plastic cover and scr...

Страница 34: ...MP GND X9 X8 OWC OWC OPENTHERM OPENTHERM OPENTHERM 5V CHIP COM BUS TX CHIP COM BUS 24V CHIP COM BUS GND CHIP COM BUS 5V CHIP COM BUS RX MAINS LIVE MAINS NEUTRAL AUXILIARY LIVE IONISATION 2 2 FLOW DHW...

Страница 35: ...e required gas tightness test and purging air from the gas installation open all windows and doors extinguish naked lights and DO NOT SMOKE GENERAL Please Note The combustion for this appliance has be...

Страница 36: ...a flexible tube 8 Switch the electricity supply ON and check all external controls are calling for heat CENTRAL HEATING 9 Set the CH temp control B to max and turn the mode knob C to The boiler contr...

Страница 37: ...ation without call for CH Domestic hot water operation with call for CH Central Heating Operaton Preheat operation Boiler frost protection Service required Display Functions Settings Changed DHW tempe...

Страница 38: ...return to normal operation Fault History To view the Fault History of the boiler press Menu and the following screen will be displayed Press Next until the following screen is displayed Press Enter a...

Страница 39: ...isplayed Press Enter and a screen similar to the following will be displayed Press Change until the desired temperature is displayed Press Exit to return to normal operation Service Mode Minimum Rate...

Страница 40: ...e slope press Menu and the following screen will be displayed Press Next until the following screen is displayed Press Enter and the following screen will be displayed Press Change until the desired s...

Страница 41: ...un for two minutes The display should read 6 Check the correct operation of the timer if fitted and all other system controls Operate each control separately and Note The temperature displayed XX C is...

Страница 42: ...ction of the boiler fault mode 6 Explain and demonstrate the function of time and temperature controls radiator valves etc for the economic use of the system 7 If a timer is fitted draw attention to t...

Страница 43: ...y in Sections 3 3 to 3 7 and MUST be carried out in sequence IMPORTANT 6 After completing the servicing or exchange of components always test for gas tightness 7 When work is complete the front panel...

Страница 44: ...y 6 Inspect the injector for blockage or damage 7 Inspect fan outlet sealing gasket and replace if necessary 1 2 3 5 Injector 3 2 BOILER FRONT PANEL REMOVAL REPLACEMENT 3 1 2 REMOVAL 1 Loosen the two...

Страница 45: ...e that the burner is not placed down upon its face as this may cause damage to the ceramic 6 Brush off any deposits that may be on the ceramic with a SOFT brush 7 Inspect the sealing gasket around the...

Страница 46: ...ection gaps are correct Refer to Sections 3 13 3 14 1 Ignition Electrode Flame Detection Reassemble the boiler in the following order 1 Ensure that the condensate trap siphon is full of water 2 Refit...

Страница 47: ...ANEL FITTED 3 8 REPLACEMENT OF COMPONENTS 1 Refer to Section 3 8 2 Disconnect the electrical leads from the fan 3 Remove the clip from the gas control valve outlet 4 Remove the extended nut retaining...

Страница 48: ...order Refer to Section 3 7 10 Check the operation of the boiler Refer to Sections 2 23 3 24 3 10 BURNER INJECTOR REPLACEMENT 1 Refer to Section 3 8 2 Disconnect the electrical leads from the fan 3 Re...

Страница 49: ...shown 5 Check that the boiler operates in both DHW CH Mode 3 12 RETURN THERMISTOR REPLACEMENT 1 Refer to Section 3 8 2 Remove the burner Refer to Section 3 11 3 Unplug the ignition lead from the elect...

Страница 50: ...bracket 4 Lift the spark generator up and out of the bottom retaining moulding 5 Fit the new spark generator and re assemble in reverse order ensuring that the the earth lead is replaced 6 Check that...

Страница 51: ...HW and CH modes 3 Refer to Section 3 8 To remove the motor 1 Remove the condensate trap siphon Refer to Section 3 5 2 Place a flat bladed screwdriver in the actuator slot provided and ease out the act...

Страница 52: ...ows Installer Turn all dials to mimimum position Menu Turn all dials to minimum position and the following screen will be shown Installer Initialise spare PCB Yes Press Yes and the following screen wi...

Страница 53: ...urn CENTRAL HEATING CIRCUIT 1 Refer to Section 3 8 2 Close all the CH water isolating valves on the boiler inlet 3 To drain the primary heat exchanger circuit Open the drain valve and attach a length...

Страница 54: ...ction at top of pump manifold and bottom of heat exchanger and remove pipe Refer to Section 3 26 5 The automatic air vent head is retained in the pump body with a bayonet connection The air vent head...

Страница 55: ...Section 3 18 4 Remove the electrical plug Refer to Section 3 17 5 Place a flat bladed screwdriver in the diverter valve motor body slot provided and ease out the motor Refer to Section 3 17 6 Remove...

Страница 56: ...oiler Refer to Section 2 15 8 Check that the boiler operates in both DHW CH modes 4 3 1 Refer to Section 3 8 2 Drain the boiler Refer to Section 3 20 3 Pull off the two electrical connections 4 Using...

Страница 57: ...n replacing the spring clips located on the return pipe connection ensure clip is oriented to correctly match connecting pipe diameters 18 Ensure the trap siphon is filled with water Refer to Section...

Страница 58: ...ining clip on the vessel water connection pipe and remove the pipe 9 Support the expansion vessel and unscrew the 2 screws from the securing bracket located on the top of the boiler and remove Note th...

Страница 59: ...Restart Boiler Restart Menu Overheat Lockout 4 4 Restart Boiler If Fault Persists Contact Installer Restart Menu Ignition Lockout 2 2 Check Other Gas Appliances Work Restart Boiler Restart Menu Too Ma...

Страница 60: ...vider Menu High Mains Voltage Contact Electricity Provider Menu Flow Return Reversed Contact Installer Menu Room Stat Fault Check Room Stat Batteries Menu No CH operation but DHW operates OK No DHW op...

Страница 61: ...s approx 24Vdc supply available at the Gas Valve See note YES Check spark generator and associated harness for continuity and visual condition Refer to Frame 3 15 Are these functioning correctly YES C...

Страница 62: ...tion Refer to Section 3 14 Check if condensate pipe is blocked Check if flue is blocked Replace as necessary NO Check gas supply and rectify fault NO YES Is 24Vdc supply available at the Gas Valve whi...

Страница 63: ...1 100 Ohms Is the Thermistor value correct YES Is there continuity between the PCB and the Thermistor YES Replace PCB Fit a new Thermistor NO Check and replace wiring as necessary NO Disconnect the wi...

Страница 64: ...15 o C expect 15 000 16 500 Ohms At 30 o C expect 7 700 8 500 Ohms Is the Outside Sensor value correct YES YES Is the wiring securely connected between the incoming terminal block boiler connection o...

Страница 65: ...inter position Are the Timer and the Room Thermostat switched on YES NO Switch the Timer and Room Thermostat On Are the Radiator Valves Open YES NO Open the Radiator Valves Is there 230Vac at A YES NO...

Страница 66: ...e engage diverter head and secure clip to wateset NO Replace PCB Is the wiring connected between PCB and DHW sensor Remove the turbine and check for debris in the turbine filter Replace turbine if nec...

Страница 67: ...ditioned or copy parts that have not been clearly authorised by Keston Failure to do so could affect safety or performance of this appliance Our Parts team are also available to help with your Keston...

Страница 68: ...68 Installation and Servicing SECTION 6 BENCHMARK COMMISSIONING...

Страница 69: ...ons and the data fields on the commissioning checklist completed in full To instigate the boiler guarantee the boiler needs to be registered with the manufacturer within one month of the installation...

Страница 70: ...priate Building Regulations and then handed to the customer to keep for future reference GAS BOILER SYSTEM COMMISSIONING CHECKLIST CONTROLS Programmable room thermostat Optimum start control Combinati...

Страница 71: ...larly and that the appropriate Service Interval Record is completed Service Provider SERVICE RECORD SERVICE 01 AND Where Possible AND Signature SERVICE 02 AND Where Possible AND Signature SERVICE 03 A...

Страница 72: ...ILER INSTALLER visually check the integrity of the whole flue system to confirm that all components are correctly assembled fixed and supported Check that maximum flue lengths have not been exceeded a...

Страница 73: ...bled fixed and supported as per instructions Check that flue and flue terminal are not obstructed Check that no seals e g Those on flue extensions have been displaced during installation Rectify if ne...

Страница 74: ...74 NOTES Keston Combi Installation and Servicing...

Страница 75: ...75 NOTES Keston Combi Installation and Servicing...

Страница 76: ...e s i g n a n d p e r f o r m a n c e o f i t s p r o d u c t s The right is therefore reserved to vary specification without notice Keston Heating PO Box 103 National Avenue Kingston Upon Hull HU5 4...

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