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48

istor system store - 

Installation and Servicing

SERVICING

61 CLEANING THE HEAT EXCHANGER

Re-assemble the boiler in the following order:
1.

Refit the condensate trap.

2.

Refit the sump cover.

3.

Refit the electrodes. (Check dimensions, see Frames 69
& 70).

4.

Refit the burner, renewing any damaged or deteriorating
sealing gaskets.

5.

Refit the fan / venturi assembly.

6.

Reconnect the fan electrical lead.

7.

Refit the boiler sealing panel.

IMPORTANT.

Ensure that the boiler sealing panel is correctly fitted and
that a good seal is made.

8.

Turn on the gas supply at the gas service cock.

9.

Reconnect the electrical supply.

62 RE-ASSEMBLY

60 CLEANING THE DHW FILTERS

The DHW inlet filter is fitted within the Pressure Reducing
Valve, which is fitted externally to the appliance on the DHW
inlet pipe.

1.

Close the cold water stop cock to the property or isolate the
PRV using the isolation valves if fitted.

2.

Undo the PRV cartridge and remove the assembly from the
brass body.

1.

Remove ignition and flame detection electrodes. Refer to
Frames 69 & 70.

2.

Remove the 3 screws retaining the sump cover and
remove.

3.

Using a suitable tool as supplied in the standard
British Gas Flue brush kit, clean between the heat
exchanger fins from the top of the heat exchanger.

4.

Access to the base of the heat exchanger is now
possible. Brush clean any deposits from the base of the
heat exchanger and remove any loose deposits from the
sump.

5.

Inspect the ignition and detection electrodes. Ensure that
they are clean and in good condition - replace if
necessary.

6.

Check the condition of the combustion chamber
insulation. Any cracked or damaged pieces must be
replaced.

Note.

 Take care not to disturb the ionisation probes at the
front and rear of the combustion chamber.

7.

Check that the ignition and detection gaps are correct.

nm7401

2

Sump cover

3

Ionisation
probes

Heat exchanger

2

3.

Remove the filter from the cartridge body and clean.

4.

Re-assemble in reverse order and re-open the cold water
stop cock.

3

SER

VICING

Содержание istor HE260

Страница 1: ...to the safety and performance specification that we require Do not use reconditioned or copy parts that have not been clearly authorised by Ideal Boilers HE260 HE325 For the very latest copy of litera...

Страница 2: ...2 istor system store Installation and Servicing...

Страница 3: ...T AMENDMENTS Relevant Installation changes implemented in this book from Mod Level A03 to A04 Jan 2010 Ideal Stelrad Group reserve the right to vary specification without notice Pipework layout change...

Страница 4: ...9 MJ m3 935 Btu ft3 nett To obtain the gas consumption at a different calorific value a For l s divide the gross heat input kW by the gross C V of the gas MJ m3 b For ft 3 h divide the gross heat inpu...

Страница 5: ...e on the back page Page Burner operating pressure measure and record Central heating flow temp measure and record Central heating return temp measure and record For combination boilers only Scale redu...

Страница 6: ...W is drawn off or periodically for a few seconds without any DHW draw off in order to maintain the DHW cylinder in a heated condition When there is a demand for CH the heating system is supplied at th...

Страница 7: ...w pressure installation pipes Health Safety Document No 635 The Electricity at Work Regulations 1989 The manufacturer s notes must NOT be taken in any way as overriding statutory obligations IMPORTANT...

Страница 8: ...ere the space into which the boiler is going to be installed is less than the length of flue required the flue must be fitted from the outside Front clearance The minimum front clearance when built in...

Страница 9: ...ct and safe operation Allowing for the acceptable pressure loss of 1mb across the installation pipework it can be assumed that a minimum permitted operating pressure of 18mb will be delivered to the i...

Страница 10: ...ature control over a living area having a heating requirement of at least 0 9kW 3000Btu h of the boiler heat output should be achieved using a room thermostat whilst other rooms are individually contr...

Страница 11: ...RAL ist9827 Roof flue kit to a maximum of 7 5m 100mm Concentric flue to maximum flue length of 6m Powered Vertical Flue Kit typical installation maximum 5m primary with 17m secondary For detailed maxi...

Страница 12: ...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 vessel or smaller system v...

Страница 13: ...is safely conveyed to where it is visible but will not cause danger to persons in or about the building G3 Guidance SECTION 3 9 The discharge pipe D1 from the vessel up to and including the tundish is...

Страница 14: ...h equates to 5 8m 5 8m is less than the actual length of 7m therefore calculate the next largest size Maximum resistance allowed for a straight length of 28mm pipe D2 from a G1 2 temperature relief va...

Страница 15: ...ime scale may be necessary however the use of artificially softened water is NOT permitted 4 Under no circumstances should the boiler be fired before the system has been thoroughly flushed 21 Overheat...

Страница 16: ...system store Installation and Servicing INSTALLATION 10 BOILER MODULE ASSEMBLY Exploded View ist9831 3 45 10 9 11 1 14 23 22 2 16 103 7 8 18 12 6 17 20 20 21 27 13 83 61 85 14 34 34A 5 Data badge INST...

Страница 17: ...ervicing INSTALLATION 11 TANK MODULE ASSEMBLY Exploded View ti m e P R O G R A M M E R pro g pro g sele ct sele ct 102 106 105 104 105 33 29 15 91 37 74 77 70 84 107 108 101 73 59 56 55 95 93 92 89 67...

Страница 18: ...od correctly as marked on the carton 2 Remove the strapping 3 Fold back the top flaps to gain access to the instructions the pre piping frame and cardboard template 4 Remove the instructions and read...

Страница 19: ...1 The PRV pressure reducing valve provided in the hardware pack MUST be fitted in a convenient point on the mains cold inlet to the appliance Once fitted a pressure balanced cold feed to mixer taps a...

Страница 20: ...ional gas supply information refer to Gas Supply on page 9 1 Extend a gas supply pipe of not less than 15mm O D copper to the boiler A working gas pressure of 20mbar 8 w g should be available at the b...

Страница 21: ...discharge pipe arrangement must comply with G3 Building Regulations This is covered in Frames 6 and 7 18 SAFETY VALVE DRAIN CH A preformed 15mm is supplied strapped to the cylinder module frame This...

Страница 22: ...ithin the dwelling IMPORTANT Any external runs must be insulated Excessive external pipe runs should be avoided in order to prevent possible freezing All pipework and fittings in the condensate drain...

Страница 23: ...o the packaging base 5 Slide module forward to free it from rear fixings ist9005 Sleeved front panel 21 CONTINUED 3 INTERNAL CONNECTION TO SOILAND VENT STACK Make connection to SVP using a solvent wel...

Страница 24: ...r module Note that the CH flow pipe is supplied strapped to the cylinder module frame 2 Slide the tank backward until the stops on the frame are reached 3 Remove the pipe nut protector from the cylind...

Страница 25: ...hose to the DHW expansion vessel 26 FLUE SYSTEM This appliance is suitable for use with the following flue system 1 100mm Concentric flue system supplied as standard Refer to Frame 3 2 Powered Vertica...

Страница 26: ...dim X 188 dim L 217 5 dim R 342 5 required Up to 595 mm Up to 595 mm Up to 595 mm none Up to 1545 mm Up to 1545 mm Up to 1545 mm Pack D 1 off Up to 2495 mm Up to 2495 mm Up to 2495 mm Pack D 2 off Up...

Страница 27: ...ngths greater than 5 5m or any flue length to be outside of the wall increase the off set by 26mm for every additional metre to maintain 1 5 o 3 o inclination 1 ist8792 28 FLUE ASSEMBLY Exploded View...

Страница 28: ...go to Frame 34 1 Measure and note wall thickness X Refer to Frame 27 2 Add 145mm 51 2 to dimension X and set telescopic flue length as indicated in drawing 3 Using a 3 5mm drill bit drill one hole in...

Страница 29: ...face 2 Locate the flue turret on the top of the boiler ensuring that the turret gasket is in place Also ensure the turret is located concentric with the flue aperture on the boiler top panel Check tha...

Страница 30: ...the total flue length from the centre of the boiler outlet to the outside wall 2 Subtract 70mm from this dimension 3 Subtract 950mm for each D pack to be used 4 If the remainder Y is 300mm 525mm this...

Страница 31: ...e seal must be made This is achieved by using either Flat roof weather collar or Universal weather collar ACCESSORIES Flue Duct Extension Kits are available for flue lengths extending beyond 1m These...

Страница 32: ...ay occur at the termination so where possible terminal positions where this could cause a nuisance should be avoided Minimum dimensions are shown below Terminal Position Minimum Dimension Directly bel...

Страница 33: ...stor system store Installation and Servicing INSTALLATION FLUE OUTLET rf8737 rf8738 39 FLUE ARRANGEMENT Note The equivalent flue length resistance of the elbow kits are 90o elbow kit 1m 45o elbow kit...

Страница 34: ...tile weather collar 1 nm9429 2 Extension Duct Vertical connector Aluminium sleeve Turret clamp 3 nm8743 X 4 2 Push fit the vertical connector supplied separately into the boiler flue connection and re...

Страница 35: ...48 MUST be loose at all times When filling there may be a slight water leak from the vent therefore electrical connections should be protected c Open manual air vent above the diverter valve and blee...

Страница 36: ...that allows complete isolation of the electrical supply such as a double pole switch having a 3mm 1 8 contact separation in both poles or a plug and socket serving only the boiler and system controls...

Страница 37: ...left off for more than a day or so then a frost thermostat should be wired into the system The frost thermostat should be sited in a cold place but where it can sense heat from the system Note If the...

Страница 38: ...r Diverter valve Gas valve PUMP Return thermistor DHW Thermistor User control and display ON OFF Switch Service connection Mains supply 230V 50Hz Fan bk y Chassis earth g y ist9894 Control PCB Fused a...

Страница 39: ...uding the meter should be inspected and tested for tightness and purged in accordance with the recommendations of BS 6891 In IE refer to IS 813 2002 2 Purge air from the gas installation by approved m...

Страница 40: ...boiler does not light after 3 attempts the fault code LF will be displayed Press the select button M and the boiler will repeat its ignition sequence When the burner is established the flame Burner On...

Страница 41: ...ump continue to run The LCD display symbol should be then After 15 seconds the burner should relight to supply central heating The LCD display symbols should be 5 Set the central heating external cont...

Страница 42: ...useholder pack supplied with this boiler After completing the installation and commissioning of the system the installer should hand over to the householder by the following actions 1 Hand the User In...

Страница 43: ...can not be accurately set with water pressure in system 13 Partially open vent on top of heat exchanger and release any trapped air Partially unscrew cap on the air vent on top of diverter valve and...

Страница 44: ...SERVICING 52 SAMPLING POINT 53 BOILER FRONT PANEL REMOVAL 1 Remove the 2 securing screws 2 Pull the top panel forward at the top and lift to disengage it from the locating pins 3 Pull the bottom panel...

Страница 45: ...1 Ensure the power supply is turned off 2 Disconnect the 14 way in line molex connector 3 Remove the 2 M5 screws securing the panel 4 Lift off the panel from its locating slots 5 Disconnect the DHW th...

Страница 46: ...l box to the expansion vesel bracket 4 The control box can now be raised off its mounting slots and dropped to the base plate 5 Access is now available to remove the 4 fixing screws and lift off the b...

Страница 47: ...NG THE CONDENSATE S TRAP 58 BURNER REMOVAL AND CLEANING 1 Remove the 6 screws securing the burner the 3 screws at the rear are extended to ease access 2 Lift off the burner from the combustion chamber...

Страница 48: ...do the PRV cartridge and remove the assembly from the brass body 1 Remove ignition and flame detection electrodes Refer to Frames 69 70 2 Remove the 3 screws retaining the sump cover and remove 3 Usin...

Страница 49: ...ection to the injector housing 5 Remove the retaining screw and pull off the mounting bracket 6 Remove the fan and venturi assembly 7 Remove the 3 retaining screws and remove the venturi assembly noti...

Страница 50: ...assemble in reverse order ensuring that the new gas seal supplied is located correctly in the injector housing 11 Check operation of the boiler Refer to Frame 49 1 Refer to Frame 53 54 2 Remove the bo...

Страница 51: ...at from the flow return pipe and withdraw it from the controls compartment 3 Disconnect the electrical leads from the thermistor thermostat 4 Re connect the electrical leads and re assemble in reverse...

Страница 52: ...his bag should be retained and the discarded insulation should now be placed into it 10 Sweep any dampened particles and place in the plastic bag 11 Fit new insulation piece a Locate and align the ins...

Страница 53: ...e the sensing tube from the gas control valve 5 Undo the gas inlet pipe union 6 Undo the union nut on the RHS of the gas control valve 7 Withdraw the valve complete with inlet pipe 8 Fit the new valve...

Страница 54: ...d forwards to remove 5 Transfer the drain pipe to the new trap and re assemble in reverse order 6 When re assembling ensure that the trap is full of water 7 Check operation of the boiler Refer to Fram...

Страница 55: ...to Frame 53 54 2 Slacken the backnut on the DHW expansion vessel and remove to one side as shown 3 Remove the fixing screw locating the control box bracket 4 Unplug all the electrical wiring from the...

Страница 56: ...79 DISPLAY UNIT REPLACEMENT 80 PRESSURE GAUGE REPLACEMENT 1 Refer to Frame 53 54 2 Unclip lower front panel 3 Drain the boiler Refer to Frame 85 4 Unscrew the pressure gauge and discard 5 Fit the new...

Страница 57: ...of screws in support plate and that tabs on the pump and valve housings engage in slots 9 Reconnect the discharge pipe 10 Check operation of the boiler Refer to Frame 49 82 DHW CYLINDER RELIEF VALVE R...

Страница 58: ...elease the electrical connections from the spark generator 7 Remove the M5 nut retaining the flue casting spring clip and remove the spring clip 8 Undo the 2 M5 x 10 flue spring clip retaining bracket...

Страница 59: ...oiler 86 DRAINING THE CYLINDER 1 Refer to Frame 53 2 Close the DHW isolating valves on the piping frame 3 Attach a length of hose to the drain point and open the drain valve 4 After replacing any comp...

Страница 60: ...head and reconnect the electrical lead 6 Refill and check the operation of the boiler 88 PUMP REPLACEMENT 1 Refer to Frame 53 54 2 Drain the boiler Refer Frame 85 3 Disconnect the electrical lead from...

Страница 61: ...ration of the boiler Refer to Frame 49 Note If preferred and for convenience a new expansion vessel may be installed elsewhere in the heating system providing it ensures equivalent system protection 9...

Страница 62: ...ons 5 Check the DHW delivery temperature and set to the customer requirements ist9878 ist9877 1 Refer to Frames 53 54 2 Remove the old seal from the casing and thoroughly clean the casing surfaces 3 F...

Страница 63: ...ing a suitable tool undo the push fit connections from the flow and return pipes of the boiler removing the pump assembly and the diverter valve assembly 16 Remove the fan venturi assembly and place o...

Страница 64: ...of the boiler Refer to Frame 49 94 HEAT ENGINE REPLACEMENT continued ist9880 5 6 2 7 Note The replacement immersion heater must be fitted with a thermal cut out 1 Refer to Frame 53 54 2 Remove the DHW...

Страница 65: ...F GO TO FRAME 97 L E GO TO FRAME 98 L A GO TO FRAME 99 L 8 GO TO FRAME 100 H 1 GO TO FRAME 101 H 2 GO TO FRAME 102 H 3 GO TO FRAME 103 H 4 GO TO FRAME 104 H F GO TO FRAME 105 In order to assist fault...

Страница 66: ...cess voltage between neutral and earth Is the value below 50V Check earth connection to the boiler If value is still in excess of 50V consult a Qualified Electrician to check the household electrical...

Страница 67: ...the boiler reset button when the system is cold Replace the system pump Set CH control knob to maximum If the overheat trips again measure the flow temp Over 90 o C Check control thermistor Refer to...

Страница 68: ...100 Ohms Remove the boiler return thermistor from the CH return pipe Are the thermistor values correct Replace the thermistor NO YES Replace PCB Check and replace wiring as necessary NO YES Is there c...

Страница 69: ...0 Ohms At 85 o C expect 1 000 1 100 Ohms Are thermistor values correct Replace PCB Replace thermistor Fill and vent the system and open all isolating valves YES Check resistance using a suitable multi...

Страница 70: ...07 664 Ignition electrode 1 175 406 23 H07 665 Flame detection electrode 1 173 529 27 E67 511 Condensate S trap 1 170 926 29 H07 670 itime programmer user control 1 174 487 30 H07 671 PCB primary cont...

Страница 71: ...71 istor system store Installation and Servicing SHORT LIST OF PARTS 107 SHORT PARTS LIST ist9881 38 16 22 10 7 12 14 20 21 82 27 83 90 91 34 101 103 44 85 81 29 33 31 23 97 8 30 92 34A...

Страница 72: ...72 istor system store Installation and Servicing SHORT LIST OF PARTS 108BOILER CASING ASSEMBLY 109BURNER ASSEMBLY 1 Sealing panel with screws 7 Burner assembly with screws and gasket Ecl 1598...

Страница 73: ...73 istor system store Installation and Servicing...

Страница 74: ......

Страница 75: ...approved inspector LABC will record the data and will issue a certificate of compliance If you notify via Gas Safe Register they will then notify the relevant Local Authority Building Control LABC sc...

Страница 76: ...Gas Safe Register ID Number...

Страница 77: ...ister ID Number Gas Safe Register ID Number Gas Safe Register ID Number Gas Safe Register ID Number Gas Safe Register ID Number Gas Safe Register ID Number Gas Safe Register ID Number Gas Safe Registe...

Страница 78: ...78 istor system store Installation and Servicing...

Страница 79: ...79 istor system store Installation and Servicing...

Страница 80: ...cification without notice The Ideal Boilers Technical Training Centre offers a series of first class training courses for domestic commercial and industrial heating installers engineers and system spe...

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