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Glow-worm Betacom 24c, Установка и обслуживание

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Supplied By www.heating spares.co  Tel. 0161 620 6677

60

14  Replacement of parts

14585

Diagram 14.14

14.14 Gas valve

For access, refer to section 14.0.
Ensure that gas supply to boiler is turned off.
Refer to diagrams 14.14 and 14.15.
Disconnect the electrical connections to the modulating coil.
Remove the screw to disconnect the gas valve electrical plug.
Release the connections from gas valve and manifold inlet,
Remove the sensing tube.
Retaining the washers for use on reassembly.
Release the main gas connection between the gas valve
supply pipe and gas inlet isolation valve, retaining the washer
for use on reassembly, see diagram 14.15.
Remove the gas valve’s two securing screws and washers
from the underside of the boiler, see diagram 14.17.
Rotate the gas pipe and withdraw gas valve assembly.

Refit in reverse order to removal, the polarity of the wires to

the modulating coil is not important.
Check gas soundness and correct boiler operation
Following replacement the maximum and minimum settings 
for natural gas must be checked to ensure they are 12.5 mbar 
/ 2.5 mbar for the Betacom 24 and 14 mbar / 2.3 mbar for 
Betacom 30 respectively.
Check the gas valve settings and re-calibrated by the 
following method if required:

Minimum setting

Remove the sensing tube from the gas valve.
Remove one lead from the modulating gas valve coil, see 
diagram 14.15.
Refer to diagram 14.16.
Connect a suitable pressure gauge to the pressure outlet of 
the gas valve.
Turn the boiler’s function switch to the ‘Winter’ position.
(Heating and Hot Water), see diagram 11.4
Turn the central heating temperature control to maximum 
setting.
Remove the protective cover from the gas valve adjuster.
Turn the inner screw using a screwdriver, clockwise: to 
increase the pressure setting, anticlockwise: to decrease the 
pressure setting.

After correct adjustment see, ‘Boiler specification section’

page 8, re-connect the electrical connector and protective 
cover and replace the combustion cover to the boiler.

Maximum setting

Remove the sensing tube from the gas valve, see diagram 
14.14. 
Remove the protective cover from the gas valve adjuster.
Push the ball inside the modulating gas valve coil using a 
sharp pointed tool.
Turn the nut with a 10mm spanner (keeping the ball in without 
any rotation) clockwise: to increase the pressure setting, 
anticlockwise: to decrease the pressure setting.

After correct adjustment see, “Boiler specification” section, 

page 8.
Finally, replace the sensing tube to the gas valve. 

ELECTRICAL
AND EARTH 
CONNECTIONS

ELECTRICAL
PLUG

SCREW

SENSING TUBE

MODULATING 
COIL

GAS VALVE AND 
MANIFOLD INLET
CONNECTIONS

Diagram 14.15

15524

GAS VALVE
ADJUSTER

Содержание Betacom 24c

Страница 1: ...www glow worm co uk Installation and Servicing High Efficiency Condensing Combination Boilers Betacom 30c G C No 47 019 09 24c G C No 47 019 08 1 2 3 4 bar 0 1 0 22 21 20 19 18 17 16 15 14 13 12 11 10...

Страница 2: ...worm appliance call 0800 0732142 Benchmark places responsibilities on both manufacturers and installers The purpose is to ensure that customers are provided with the correct equipment for their needs...

Страница 3: ...iler Dimensions and Hydraulic Schematic Boiler Location Clearances and Ventilation Flue Options and Terminal Clearances Water System Heating Water System Domestic Hot Water Installation Preparation Bo...

Страница 4: ...as possible Always use assistance if required Important Information WARNINGS Gas Leak or Fault Turn off the gas emergency control valve immediately Eliminate all sources of ignition i e smoking blowla...

Страница 5: ...here no specific instructions are given reference should be made to the relevant British Standard Code of Practice In IE the installation must be carried out by a competent person approved at the time...

Страница 6: ...ilt frost protection device that fires the boiler s burner when the temperature of primary hydraulic water falls below 6 C The device works irrespective of any room thermostat setting and will protect...

Страница 7: ...obtain service please call your installer or Glow worm s own service organisation using the telephone number on the inside front cover of this literature Benchmark scheme Glow worm support the Benchma...

Страница 8: ...e 85 C 85 C Maximum domestic hot water output at 35 o T 9 4 L min 10 5 L min Expansion vessel capacity 7 litres 1 53 gallons 8 litres 1 76 gallons Expansion vessel pre charge pressure 1 0bar 14 6 Ibf...

Страница 9: ...it Turbo heat exchanger 16 OverheatSafetythermostat 17 Ignition Electrode 18 Heating Circuit Pressure Safety Valve 19 Secondary Heat Exchanger 20 Automatic Air Vent 21 Water Pressure Switch Sensor 22...

Страница 10: ...oted The general arrangement of the boiler is shown in diagram 2 1 and the hydraulic and gas schematics diagrams showing the central heating hydraulic circuit and domestic hot water hydraulic circuit...

Страница 11: ...frame building it should be fitted in accordance with the Institute of Gas Engineers document IGE UP 7 1998 If in doubt seek advice from local gas undertaking or Glow worm 3 4 Combustible Material The...

Страница 12: ...Section 9 page 25 Twin Flue Twin Flue Adapter concentric flue 80 Part No A2011000 Section 9 page 32 Diagram 4 1 Plume Management Kit basic set white concentric flue 60 100 Part No A2044100 for use wit...

Страница 13: ...l positioning must be those detailed in I S 813 Domestic Gas Installations The terminal must be exposed to the external air allowing free passage of air across it at all times Being a condensing boile...

Страница 14: ...accordance with BS7593 2006 using a cleanser such as Sentinel X300 or X400 Fernox Restorer or Salamander corrosion guard cleaner IMPORTANT Ensure all cleanser is removed from the whole system before...

Страница 15: ...upply to the boiler Where cold water mains are fitted with a water meter check valve s or loose jumper stopcock a domestic hot water mini expansion vessel may need to be fitted To obtain the best hot...

Страница 16: ...stallation of the appliance 4 Roll the carton onto its open face 5 Lift the carton free of the inner packaging 6 Remove the mounting bracket and valve package 6 Installation Preparation Diagram 6 1 Di...

Страница 17: ...espective of internal or external installation Remove the wall template whilst drilling the flue hole 6 4 Flue Hole Cutting External access flue installation can use a 105mm diameter core drill Intern...

Страница 18: ...t is advisable to use a compression type fitting to extend the safety discharge valve tube The pipe must have a continuous fall and be routed to a position so that any discharge of water possibly boil...

Страница 19: ...eferably of 32mm diameter to prevent freezing in adverse weather conditions It is not necessary to provide air breaks or extra traps in the discharge pipe as there is already a 75mm high trap inside t...

Страница 20: ...Supplied By www heating spares co Tel 0161 620 6677 20 8 Condensate Connections Diagram 8 3 13000...

Страница 21: ...he flue system must be designed to have a continuous fall to the boiler of at least 2 5 44mm metre to allow condensate to run back into the boiler and out via the condensate drain The flue can be inst...

Страница 22: ...Supplied By www heating spares co Tel 0161 620 6677 22 14005 Diagram 9 3 15532 9 Telescopic Flue Length Preparation and Installation Diagram 9 2...

Страница 23: ...an 315mm DO NOT cut the flue it can project to a maximum of 600mm refer to diagram 9 5 If this is not desirable then a Standard flue MUST be used and cut to length 9 4 SIDE Flue Temporarily secure the...

Страница 24: ...bly to be drawn back up to the flue elbow Secure the flue elbow in position on top of the boiler with the four screws supplied Draw the flue assembly from wall and engage the flue duct into the elbow...

Страница 25: ...ength MUST be reduced by 1 metre The diagram 9 10 shows the length achievable by using the kit A2043400 When extension pipes are used the flue system must be designed to have a continuous fall to the...

Страница 26: ...Supplied By www heating spares co Tel 0161 620 6677 26 Diagram 9 11 13222 9 Standard Flue Length Preparation and Installation Diagram 9 12 15532...

Страница 27: ...s 180mm to suit a 75mm min wall thickness The flue can project to a maximum of 600mm refer to diagram 9 14 9 9 SIDE Flue Temporarily secure the flue elbow measure the distance from the outside wall to...

Страница 28: ...he flue terminal see diagram 9 17 Push the flue assembly into the wall externally or internally initially until the end of the assembly protrudes a short way from the inside face of the wall This will...

Страница 29: ...metre see diagram 9 18 NOTE 2x45 bends can replace 1x90 bend if necessary When using 90 bends any horizontal extension pipe should be inclined by a minimum of 44mm metre 2 5 towards the boiler to fac...

Страница 30: ...ied see diagram 9 22 The rubber O rings of each section should be lubricated prior to assembly NOTE Do not use mineral oils or grease silicon grease or water is recommended When installing the flue it...

Страница 31: ...esired length measuring from the O ring end and discard the plain end of the tube The cuts must be square and made free of burrs to allow correct assembly NOTE The flue pipe is 10mm longer than the ai...

Страница 32: ...Tel 0161 620 6677 32 9 Twin Flue Length Preparation and Installation Diagram 9 24 14530 Secure long flue lengths horizontal vertical to walls or ceiling at every joint or on straight flue runs at eve...

Страница 33: ...ssary The maximum permitted combined air inlet flue outlet flue length is 14 3 metres for Betacom 24C 11 9 metres for maximum flue length must be reduced by 1 metre see diagram 9 24 NOTE When using 90...

Страница 34: ...Pitched Roof Fit the required pitched roof weather collar over the 150mm hole in the roof Make good the tiling or slating around the collar incorporating the flashing of the weather collar Position th...

Страница 35: ...t wiring cannot be put right under the terms of the Glow worm guarantee All system components must be of an approved type Electrical components have been tested to meet the equivalent requirements of...

Страница 36: ...room thermostat terminal block remove the front panel secured with two screws lift off the two retaining lugs see diagram 10 1 Carefully pull forward and down the controls fascia see diagram 10 2 On c...

Страница 37: ...as indicated in diagram 10 6 NOTE Ensure that the polarity of the mains connection is correct as reversed polarity may cause the appliance to malfunction NOTE While the boiler s main pcb pump three wa...

Страница 38: ...diagram 11 2 The manual feed valves must be closed and the filling loop disconnected once the pressure sensor sited on the boilers control panel indicates a system pressure between 1 0 and 1 5 bar see...

Страница 39: ...seconds Switching back to its previous position once the fault has been eliminated Function switch The three position switch allows the boilers operation to be set to Stand by centre position Heating...

Страница 40: ...the pressure setting After correct adjustment see Boiler specification section page 8 re connect the electrical connector and protective cover and replace the sensing tube to the boiler Maximum settin...

Страница 41: ...acom 30c 28 5 25 7 3 02 2 72 11 6 Checking the gas rate The boiler is fitted with a fully modulating automatic gas valve With all other gas appliances turned off measure the gas rate at the gas meter...

Страница 42: ...and CH start up This delay can be set to 45 seconds by setting dip switch 3 into the OFF position see diagram 11 10 and 11 11 255 seconds delay setting The boiler is capable of up to 255 seconds ignit...

Страница 43: ...d components It is the Law that any servicing is carried out by a competent person approved at the time by the Health and Safety Executive Advise the user that like all condensing boilers this applian...

Страница 44: ...e cables must be removed by opening the control panel and gaining access to the PCB Disconnect the plugs of the ignition and flame ionisation electrodes see diagram 11 15 Fit new injector bar manifold...

Страница 45: ...ction switch to the winter position Turn the Central Heating temperature control knob to the maximum position Push the ball inside gas valve modulating coil using a sharp pointed tool Turn outer nut w...

Страница 46: ...stem pressure the combustion performance refer to the following procedure The operational gas inlet pressure and gas rates refer to the commissioning section paragraph 11 5 Correct any fault before co...

Страница 47: ...ance the combustion values are still unacceptable and after further remedial work has been carried out the appliance must be disconnected until the CO CO2 ratio is acceptable Advice can be sought from...

Страница 48: ...2 Diagram 12 3 Diagram 12 4 1 2 3 4 bar 0 4 1 0 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 3 2 1 24 23 ON 30 40 50 60 70 80 90 bar SIDE PANELS SECURING SCREWS SECURING SCREWS 4 OFF SECURING SCR...

Страница 49: ...to damage painted finish of heat exchanger Clean the burner by washing in soapy water Allow to dry thoroughly before re fitting Do not use wire or a sharp instrument to clean the burner injectors Ens...

Страница 50: ...VALVE DOMESTIC HOT WATER SENSOR CENTRAL HEATING NTC SENSOR THREE WAY VALVE PUMP FAN PRINTED CIRCUIT BOARD L E N 230V 50Hz PERMANENT MAINS SUPPLY FUSED AT 3A 24V ROOM THERMOSTAT CONNECTION low voltage...

Страница 51: ...a gas supply to the boiler and the gas service isolation valve is turned on see diagram 13 2 Check pressure at the gas service isolation valve refer to section 11 5 Check that the heating system pres...

Страница 52: ...Supplied By www heating spares co Tel 0161 620 6677 52 13 Fault finding 13 2 Fault finding chart 1 Check electrical supply central heating sensor and frost protection 14496 Diagram 13 4 6...

Страница 53: ...iagram 13 5 Diagram 13 6 4 Ensure DHW taps are closed Put CH temperature Is overheat thermostat LED flashing Check and if necessary replace Check and if necessary reset or replace Ensure external cont...

Страница 54: ...es co Tel 0161 620 6677 54 13 Fault finding 13 4 Fault finding chart 4 Check domestic hot water operation 13 5 Fault finding chart 5 Check domestic hot water and central heating modulation 14499 14500...

Страница 55: ...Supplied By www heating spares co Tel 0161 620 6677 55 13 Fault finding 13 6 Fault finding chart 6 Check ignition system 15558 Diagram 13 9...

Страница 56: ...ts open the heating flow and return isolating valves and refill vent and pressurise the heating circuit refer to section 11 2 Check for leaks 14 2 Draining of Boiler Hot Water Circuit Drain the Domest...

Страница 57: ...the same value as the old PCB 14543 14578 14494 14577 Diagram 14 3 Diagram 14 5 Diagram 14 6 Diagram 14 4 14 7 Burner Refer to section 12 3 to replace the burner Retain all washers gaskets for use on...

Страница 58: ...of the boiler Remove the pump assembly Refer to diagram 14 10 Remove the pump body automatic air vent and brass union connector from the R H hydraulic assembly by releasing the clips Fit these to the...

Страница 59: ...re assembly Remove the combustion chamber cover see section 12 1 Carefully remove the heat exchanger by pulling forward taking care not to damage the insulation Fit the new heat exchanger and reassemb...

Страница 60: ...f required Minimum setting Remove the sensing tube from the gas valve Remove one lead from the modulating gas valve coil see diagram 14 15 Refer to diagram 14 16 Connect a suitable pressure gauge to t...

Страница 61: ...olerance Betacom 24c Betacom 30c 28 5 25 7 3 02 2 72 Checking the gas rate The boiler is fitted with a fully modulating automatic gas valve With all other gas appliances turned off measure the gas rat...

Страница 62: ...Diagram 14 18 Diagram 14 17 14 16 Overheat safety thermostats For access refer to section 14 1 Remove the front panel combustion chamber cover and right side panel Refer to diagram 14 17 Locate the o...

Страница 63: ...n the isolating valves on the flow and return connections refill vent and pressurise boiler ensuring all joints are sound 14 19 Filter For access refer to section 14 1 Drain the boiler circuit refer t...

Страница 64: ...0020061567 No Description Model Part No 16 Injector 30c 0020061568 17 Diverter motor 0020061621 18 Burner 24c 0020061564 19 Burner 30c 0020061565 20 Secondary heat exchanger 24c 0020061614 21 Secondar...

Страница 65: ...Supplied By www heating spares co Tel 0161 620 6677 65 14595 Diagram 15 17 1 2 3 4 5 6 8 9 10 17 11 12 13 22 23 28 29 24 25 26 27 14 15 16 18 19 20 21 15 Spare parts 7...

Страница 66: ...ep back straight bend using legs Keep load as close to body as possible Always use assistance if required Dispose of packaging in a responsible manner Recommend wear suitable cut resistant gloves with...

Страница 67: ...Supplied By www heating spares co Tel 0161 620 6677 67 17 Declaration of conformity...

Страница 68: ...res co Tel 0161 620 6677 www high efficiency info Because of our constant endeavour for improvement details may vary slightly from those shown in these instructions Glow worm Nottingham Road Belper De...

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