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2000225065A

14 Replacement of Parts

14.38 Hydroblock Assembly Right-Hand

For access, refer to section 14.1.

Refer to section 12.9 to drain the boiler heating circuit.

Refer to section 12.10 and drain the boiler hot water circuit.

Refer to diagram 14.26.

Undo the connector on the bottom of the return pipe from the
hydroblock.

Undo the nut connecting return pipe to heat exchanger.

Lift the return pipe up out of the way.

Undo the coupling at the base of the expansion vessel, see
diagram 14.10.

Remove the clip holding the expansion vessel coupling into the
top of the right hand hydroblock.

Move the coupling out of the way.

Remove pump head, refer to section 14.16.

Note: It is not necessary to disconnect the electrical lead but put
pump head in a convenient place where it will not strain the lead.

Remove the filling loop tube, refer to section 14.26.

Remove the bypass tube, refer to section 14.25.

Remove the electrical connections to the flow sensor and the
low water pressure sensor, refer to sections 14.23 and 14.24.

Remove the water connection clips 3 and 4 below the hydroblock,
see diagram 14.26.

Remove the central heating filter, refer to section 12.8.

Remove the retaining clip to remove the drain point, refer to
section 14.32.

Undo two securing screws on underside of the right hand
hydroblock.

Remove right hand hydroblock from plate-to-plate heat
exchanger using a TORX screwdriver to remove the securing
screw, see diagram 14.26.

Lift out the right hand hydroblock.

Remove the remaining components for refitting into the
replacement right hand hydroblock.

Refill, vent and pressurise the boiler.

Open the cold-water isolation valve and slowly open a hot water
tap to remove air. Close the hot water tap.

Check for leaks.

14.39 Access to Switches, User Interface and

Timer

For access, refer to section 14.1.

Release the front of the fascia by carefully prising up the two
retaining latches, see diagram 14.28.

Do not allow the front of the fascia to swing down and be loosely
held by the electrical connections to the mains/reset switch,
user interface and clock. Either remove the connections or
support the fascia.

14.40 Clock/Timer (if fitted)

Refer to section 14.39 for access.

Remove electrical plug.

Undo two securing screws and withdraw clock/timer.

14.41 Mains/Reset Switch

Refer to section 14.39 for access.

Remove the switch retaining screw.

Remove switch from housing, see diagram 14.29.

Remove electrical leads.

Diagram 14.27

Diagram 14.28

RETAINING
LATCHES

DIVERTER
VALVE

L.H. HYDROBLOCK

10101

11472

Содержание 38cxi

Страница 1: ...elper Derbyshire DE56 1JT To b e l e f t w i t h t h e u s e r Instructions for Use Installation and Servicing 24cxi 30cxi 38cxi G C No 47 047 23 G C No 47 047 24 High Efficiency Condensing Combinatio...

Страница 2: ...m the date of manufacture whichever is the shorter for labour The second year of the parts guarantee from the beginning of the 13th month onwards after installation or manufacture is conditional upon...

Страница 3: ...allation Preparation 6 18 Flue Preparation 7 20 Gas Water Connections and Boiler Fixing 8 22 Safety Valve Discharge and Condensate Connections 9 23 Electrical Connections 10 24 Commissioning 11 26 Ser...

Страница 4: ...to the lavatory If you do suffer irritation to the eyes or severe irritation to the skin seek medical attention The insulation is composed of non combustible material Electrical Supply WARNING The boi...

Страница 5: ...room The boiler has a top outlet flue connection and can be fitted with horizontal flue vertical flue or twin pipe flue Refer to flue options guide for further information this is available from your...

Страница 6: ...end upon the particular installation conditions and usage refer to guarantee registration on the inside front cover of this literature If this appliance is installed in a rented property there is a du...

Страница 7: ...Check that the electrical supply to the boiler is ON at the external isolator 6 Set any remote controls as required 7 Turn the mains reset on off switch to the ON position I see diagram 1 The control...

Страница 8: ...IDE FRONT COVER OF THIS BOOKLET To Turn the Boiler Off There is a mains reset switch on the right hand side of the controls fascia which will isolate the boiler However it is preferable to leave the e...

Страница 9: ...opriate Buildings Regulations either The Building Regulations The BuildingRegulations Scotland The Building Regulations Northern Ireland The Water Fittings Regulations or Water byelaws in Scotland The...

Страница 10: ...at least one radiator not fitted with a thermostatic valve Note For further information see the supplementary guide provided by the DTLR Domestic heating hot water guide to the building regs 2001 par...

Страница 11: ...onsideration should be given for the space required to insert the flue internally which may necessitate clearance larger than those specified in diagram 2 1 2 3 Timber Frame Buildings If the boiler is...

Страница 12: ...installed from inside the building when access to the outside wall face is not practicable 3 3 Flue Options There are various flue systems to choose from as follows Standard horizontal flue pack Pt N...

Страница 13: ...e terminal or the terminal could be subject to damage If a terminal guard is required it must be positioned to provide minimum of 50mm clearance from any part of the terminal and be central over the t...

Страница 14: ...1 76 gallons with a charge pressure of 0 5bar Note The expansion vessel volume depends on the total water systemvolumeandtheinitialsystemdesignpressure Guidance on vessel sizing is also given in the c...

Страница 15: ...pressurise the system to 1 bar indicated on the digital display with no demand Note that the electrical supply to the appliance has to be switched on to enable the pressure to be read in the digital d...

Страница 16: ...ressure reducing valve must be fitted in the supply to the boiler 5 2 Hard Water Areas The temperatures within the heat exchanger are limited by the boiler control system to minimise scale formation w...

Страница 17: ...tinthepositionmarkedonthewall template For standard side flues the horizontal flue centre line on the wall template should be extended to the side wall and the vertical centre of the flue hole marked...

Страница 18: ...the fixing jig Fix the wall products to the wall using suitable screws Locate the jig plate between the wall brackets and secure with the screws supplied 6 5 Pre Plumbing The fixing jig can now be pr...

Страница 19: ...e system is made up from a standard horizontal flue kit and accessories The accessories include flue extensions 45o and 90o bends and fixing brackets The maximum permitted straight flue length is 10 m...

Страница 20: ...d flue ducts has been correctly cut to the instructions given in sections 7 1 7 2 the rubber sealing collar should fit flush with the outside wall check this Position securing collar centrally over jo...

Страница 21: ...tallation including the meter should be inspected tested for soundness and purged in accordance with the current issue of BS6891 and in IE the current edition of I S 813 Domestic Gas Installations 8 2...

Страница 22: ...f 32mm diameter to prevent freezing in adverse weather conditions The condensate is discharged periodically in slugs by siphonic action Diagram 9 1 11482 CAP CONDENSATE DRAIN DRAIN CONNECTION 9 Safety...

Страница 23: ...tified as to its use A fused three pin plug and shuttered socket outlet may be used instead of a fused spur box provided that a They are not used in a room containing a fixed bath or shower b Both the...

Страница 24: ...lectrical system checks as below 1 Test insulation resistance to earth of mains cables 2 Test the earth continuity and short circuit of cables 3 Test the polarity of the mains Please ensure the Benchm...

Страница 25: ...reparation for Lighting Isolate the boiler from the mains electrical supply Test for gas soundness and purge air from the gas supply Turn on the gas service cock see diagram 8 1 11 4 Initial Lighting...

Страница 26: ...emperatures selected By turning the domestic hot water and central heating control knobs to minimum setting the holiday mode is set up However frost protection and pump exercise programme remain activ...

Страница 27: ...nd 12 5 Inspect the tips for damage Clean away any debris and check the spark gap is 3 5 to 4 5 mm Check the electrode gasket for signs of damage and replace if necessary 12 3 Burner Drop down the con...

Страница 28: ...off the siphon adapter Remove the drain connection downstream of the condense drain Remove DC fan supply refer to section 14 5 Remove the condense trap securing screws Lift up and carefully remove th...

Страница 29: ...24cxi 57 for30cxiand57for38cxi ChecktheCO2 value which should be 9 1 0 2 0 5 Note that with the inner case front panel fitted the combustion readings will increase slightly to 9 3 0 3 0 5 If adjustme...

Страница 30: ...the filter to clean or renew if necessary see diagram 12 9 Replace the filter into its housing and replace the securing clip Open the cold water isolating valve and test the Domestic Hot Water circui...

Страница 31: ...1 After servicing or replacing parts close the drain valve and remove the hose Open the heating flow and return isolating valves and refill vent and pressurise the heating circuit See section 11 2 Che...

Страница 32: ...LS 230V SWITCHED LIVE FROM OPTIONAL FROST STAT REMOVE THE LINK IF FITTING VOLTAGE FREE OR 230V SYSTEM CONTROLS IF THE LINK IS NOT REMOVED THE BOILER WILL RUN CONTINUOUSLY MAINS VOLTAGE HEATING CONTROL...

Страница 33: ...lacement work Always check for gas soundness after any service work NOTE If the DHW control is set for pre heat the boiler will start as soon as power is supplied to it if there is no heating demand S...

Страница 34: ...ctrode carefully from the combustion chamber see diagram 12 2 14 3 Igniter Unit For access refer to section 14 1 Remove ignition lead and electrical connections then remove igniter unit by removing tw...

Страница 35: ...ess refer to section 14 1 Refer to section 12 3 for removal of the fan gas valve and burner assembly Remove the gas control valve as described in the relevant parts of section 14 6 Remove the venturi...

Страница 36: ...Remove steel washer Remove glass Remove fibre washer Replace in reverse order 14 12 Expansion Vessel For access refer to section 14 1 Refer to section 12 9 and drain the boiler heating circuit Undo t...

Страница 37: ...move heat exchanger as per section 14 13 Remove the two securing screws and pull the hood down and away from the flue hood bracket and flue elbow see diagram 14 12 14 15 Diverter Switch For access ref...

Страница 38: ...tional test of the controls 14 19 Heating Flow Thermistor For access refer to section 14 1 Refer to diagram 14 17 Remove the electrical connections from the thermistor Remove the retaining clip from t...

Страница 39: ...solation valve and slowly open a hot water tap to remove air Close the hot water tap and check for any leaks 14 24 Low Water Pressure Sensor For access refer to section 14 1 Refer to section 12 9 and...

Страница 40: ...the retaining clip to remove the bypass valve Fit new O rings Replace the bypass valve refill vent and pressurise the boiler Adjust the bypass as described in commissioning see section 11 6 Check for...

Страница 41: ...y pipe from the gas cock and the gas valve refer to relevant parts of section 12 3 Undo the central heating flow pipe connection into the left hand hydroblock see diagram 14 26 Undo the nut connecting...

Страница 42: ...emove the securing screw see diagram 14 26 Lift out the left hand hydroblock Remove the remaining components for refitting into the replacement left hand hydroblock Refill vent and pressurise the boil...

Страница 43: ...etaining clip to remove the drain point refer to section 14 32 Undo two securing screws on underside of the right hand hydroblock Remove right hand hydroblock from plate to plate heat exchanger using...

Страница 44: ...electrical connections to the PCB Prise back the two PCB retaining clips and withdraw the PCB see diagram 14 30 When refitting the rear panel ensure the leads are not trapped refer to diagram 14 3 14...

Страница 45: ...worm sown service organisation using the telephone number on the inside front cover of this booklet 15 Spare Parts 14 Replacement of Parts PCB DC Fan Supply For access refer to section 14 1 Refer to d...

Страница 46: ...47 2000225065A 15 Spare Parts 9307 1 2 3 4 16 14 7 8 9 10 11 12 13 15 5 6 17 18 21 20 19 22 Diagram 15 1...

Страница 47: ...48 2000225065A Because of our constant endeavour for improvement details may vary slightly from those shown in these instructions...

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