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36

 

SERVICING

Ideal Logic Combi - 

Installation and Servicing

36  sERVICINg sChEDULE

F

or the very latest copy of literature for specification & maintenance practices, visit our website www.idealboilers.com, where you 

will be able to download the relevant information.  N.B. Technical Bulletins are also available on www.idealboilers.com.

Warning.

  always turn OFF the gas supply at the gas service cock, and switch OFF and disconnect the electricity 

supply to the appliance before servicing.
Combustion testing must be carried out by a competent person using a combustion analyser conforming to Bs7927.

To ensure the continued safe and efficient operation of the appliance it is recommended that it is checked at regular intervals and 

serviced as necessary.  The frequency of servicing will depend upon the installation condition and usage but should be carried out 

at least annually.  
It is the law that any service work must be carried out by a Gas Safe Registered Engineer. In IE service work must be carried out 

by a Registered Gas Installer (RGII).

INspECTION

1.

  Light the boiler and carry out a pre-service check, noting any 

operational faults.

2.

 Check the flue terminal (and terminal guard if fitted) is 

undamaged and clear of any obstruction.

3.

 Check all water and gas joints for signs of leakage.  Remake 

any suspect joints ensuring a gas tightness check is carried 

out if applicable and the water system is correctly refilled, 

vented and re-pressurised.

CLEaNINg pROCEDURE

Note. 

In order to carry out either servicing or replacement of 

components the boiler front panel must be removed. 

Refer to Frame 37.

1.

  Clean the main burner. Refer to Frame 39.

2.

  Clean the heat exchanger & condensate trap/siphon. Refer to 

Frames 40 & 41.

3.

  Check the main injector for blockage or damage. Refer to  

Frame 45.

4. 

Check that the flue terminal is unobstructed and that the flue 

system is sealed correctly.

ALSO IF THE DHW FLOW RATE IS IN QUESTION :-

5.

  Check the DHW filter for blockage. Refer to Frame 66.

The cleaning procedures are covered more fully in Frames 38-42 

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 MUST be correctly 

refitted, ensuring that a good seal is made.

do noT oPEraTE the boiler if the front panel is 

not fitted.

8.

  If, for any reason, the condensate trap/siphon has been 

removed ensure the trap is refilled with water before  

reassembling.

9.

  Check the gas consumption.

10. 

Check combustion by connecting the flue gas analyser to the 

flue gas sampling point as shown in the diagram and measure 

CO & CO

2

.

  If the CO/CO

ratio is greater than 0.004 AND the integrity of 

the complete flue system and combustion circuit seals have 

been verified and the inlet gas pressure (and gas rate) have 

been verified, then contact Ideal.

11.

 Complete the service section in the Benchmark 

Commissioning Checklist.

Flue Sampling Point

Air Sample

Point

Ensure all caps and seals

are re-fitted after use

gENERaL

Please note

: During routine servicing, and after any 

maintenance or change of part of the combustion 

circuit, the following must be checked:
-  The integrity of the flue system and the flue seals,
-  The integrity of the boiler combustion circuit and 

the relevant seals

-  The operational (working) gas inlet pressure at 

maximum rate.

-  The gas rate
-  The combustion performance.

COMpETENCE TO CaRRy OUT ThE ChECK 

OF COMBUsTION pERFORMaNCE

Please note

BS 6798:2009 Specification for 

installation and maintenance of gas-fired boilers of 

rated input not exceeding 70kW net advises that:
-  The person carrying out a combustion 

measurement should have been assessed as 

competent in the use of a flue gas analyser and the 

interpretation of the results.

-  The flue gas analyser used should be one meeting 

the requirements of BS7927 or BS-EN50379-3 

and be calibrated in accordance with the analyser 

manufacturers requirements, and

-  Competence can be demonstrated by satisfactory 

completion of the CPA1 ACS assessment, which 

covers the use of electronic portable combustion 

gas analysers in accordance with BS7967, Parts 1 

to 4.

sER

VICIN

g

Summary of Contents for LOGIC Combi E 35

Page 1: ...that have not been clearly authorised by Ideal For the very latest copy of literature for specification and maintenance practices visit our website www idealboilers com where you can download the rel...

Page 2: ...2 Ideal Logic Combi Installation and Servicing...

Page 3: ...up reserve the right to vary specification without notice For any technical queries plese ring the ideal installer helpline 01482 498704 NOTE BOILER Restart PROCEDURE To reset boiler turn mode knob to...

Page 4: ...and Countries of destination PMS Maximum operating pressure of water C13 C33 C53 A room sealed appliance designed for connection via ducts to a horizontal or vertical terminal which admits fresh air t...

Page 5: ...ral heating mode Heat input to be calculated For assistance see Technical Helpline on the back page Page Burner operating pressure n a Central heating flow temp measure and record Central heating retu...

Page 6: ...order to maintain the DHW plate heat exchanger in a heated condition This only occurs if pre heat knob is in the ON period When there is a demand for CH the heating system is supplied at the selected...

Page 7: ...ttings Regulations or Water byelaws in Scotland The Current I E E Wiring Regulations Where no specific instructions are given reference should be made to the relevant British Standard Code of Practice...

Page 8: ...owing notes are intended for general guidance 1 The boiler MUST be installed so that the terminal is exposed to external air Location of boiler The boiler must be installed on a flat and vertical inte...

Page 9: ...ooms should also be fitted with a room thermostat controlling the temperature in a space served by radiators not fitted with such a valve When thermostatic radiator valves are used the space heating t...

Page 10: ...e drill the flue can be installed from inside the building where wall thicknesses do not exceed 600mm 24 Where the space into which the boiler is going to be installed is less than the length of flue...

Page 11: ...reason an additional vessel must be installed on the return to the boiler Guidance on vessel sizing is given in Frame 2 Notes a The method of filling refilling topping up or flushing sealed primary ho...

Page 12: ...ther information contact Fernox Cookson Electronics Forsyth Road Sheerwater Woking Surrey GU21 5RZ 44 0 8706 015000 Sentinel Performance Solutions The Heath Business Technical Park Runcorn Cheshire WA...

Page 13: ...ose Condensate Internal 229 Siphon Trap 231 Condensate Outlet Connection 301 Ctrl Box Fixings Hings Spring 302 Primary PCB 303 CUI Board 304 Control Thermistor Return 306 Electrode Ignition 307 Electr...

Page 14: ...TS Gas Valve Pack 1 Pipe Gas Inlet 2 Washer Gas blue 3 Gas Cock Filling Loop Pack 1 3 8 Top Hat Washer 2 Valve Filling Loop 3 Pipe Filling Loop Return Valve Pack 1 Pipe CH Return 2 Washer CH 3 Valve R...

Page 15: ...C A E F B 1 2 Pack B Contents Non Telescopic A Flue terminal B Flue turret C Rubber terminal wall seal D Cutting Aid E Wall Seal white 8 unpacking cont d A D B C E Note This flue system incorporates...

Page 16: ...he wall Both wall faces immediately around the cut hole should be flat 2 Drill 2 mounting holes marked from template with a 7 5mm 8mm masonry drill and insert the plastic plugs provided for the wall m...

Page 17: ...pper combustion sample point with a screw cap seal and a lower air sample point with an air stopper seal Ensure all caps seals are in place Additional Termination Kits available for use with these B p...

Page 18: ...Terminal 1000mm long B Pack Telescopic Cut 75mm Minimum Maximum Minimum Maximum Minimum Maximum Minimum Maximum B Pack Standard 171 556 286 484 601 816 526 741 Plus 1 1m D pack 1121 1506 1236 1434 155...

Page 19: ...utlet terminal is upper most 4 Drill a 3 5mm hole through one of the 2 outer side holes in the outer flue section into the inserted outer flue as shown Take care not to pierce the inner plastic flue F...

Page 20: ...ed to be refitted 9 When 1st mark is in line with the wall whilst holding the flue firmly push the white wall sealing flange to the wall until the 2nd of the two marks is just visible If the last loca...

Page 21: ...ct Extension Kits are available for flue lengths extending beyond 1m These packs contain 1m extension ducts and may be cut to the desired length If the offset vertical option is used an elbow Kit is r...

Page 22: ...nal positions where this could cause a nuisance should be avoided Minimum dimensions are shown below rf8392 Terminal Position Minimum Dimension Directly below an opening air brick windows etc 300 mm B...

Page 23: ...the instructions provided with the vertical connector kit 3 Secure the vertical connector by applying downward pressure on the connector 4 Position the clamp on the top face of the flue manifold and p...

Page 24: ...fig 3 External Drain Connections The use of an externally run condensate drainage pipe should only be considered after exhausting all internal termination options as described previously An external s...

Page 25: ...use Minimum connection height up 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 withou...

Page 26: ...e DHW inlet service valve blue handle and copper tail to the threaded boss connection ensuring the seal provided is correctly located 2 Fit the DHW outlet pipe tail to DHW outlet connection ensuring t...

Page 27: ...et valve and fit the grey cap to the open end 8 Fit the Plug to the free end of the filling loop Note open all DHW taps to ensure water is flowing freely once satisfied close all taps Top Up 1 Ensure...

Page 28: ...s complete isolation of the electrical supply such as a double pole switch having a 3mm 1 8 contact separation in both poles The means of isolation must be accessible to the user after installation Wa...

Page 29: ...stallation help messages RF Mechanical Programmable Room Thermostat 24 hr kit Combined 24 hour mechanical timer and room thermostat with wireless communication to receiver unit which fits into control...

Page 30: ...Prog Room Stat Optional Frost Stat DIAGRAM A Internal Timer or Programmable Room Stat 3G9561 N L N FROST STAT OPTIONAL ROOM STAT TIMER Room Stat Optional Frost Stat DIAGRAM B External Timer 28 rEPLACI...

Page 31: ...Valve Pump Room Stat Main Supply Frost Stat r b bk or bk 1 X1A X1B X1C X2 X3 X5 X6 X8 2 3 4 5 6 1 2 3 4 5 1 2 3 4 5 6 8 7 9 1 2 3 4 1 2 3 4 5 6 X7 1 2 3 4 5 1 2 3 4 5 6 7 8 9 10 11 p bk r bk PCB Earth...

Page 32: ...IS 813 2002 2 Purge air from the gas installation by the approved methods only 31 Commissioning and Testing General Please Note The combustion for this appliance has been checked adjusted and preset...

Page 33: ...N and check all external controls are calling for heat Central Heating 9 Set the CH temp control C to max and turn the mode knob D to The boiler control should now go through its ignition sequence unt...

Page 34: ...on steady when the burner lights 2 Close all taps except the furthest one from the boiler and check that the boiler is firing at maximum rate This is factory set to give a DHW temperature rise of appr...

Page 35: ...hould be fully explained to the householder to ensure the greatest possible fuel economy consistent with the household requirements of both heating and hot water consumption Advise the User of the pre...

Page 36: ...to Frame 66 The cleaning procedures are covered more fully in Frames 38 42 and must be carried out in sequence Important 6 After completing the servicing or exchange of components always test for gas...

Page 37: ...oles in the front panel 5 Re tighten the two retaining screws 38 fan and venturi assembly removal and cleaning 1 Disconnect the electrical leads from the fan 2 Remove the clip from the gas control val...

Page 38: ...ant The burner head is a ceramic plaque construction Care must be taken to ensure that the burner is not placed down upon its face as this may cause damage to the ceramic 6 Brush off any deposits that...

Page 39: ...ignition and detection gaps are correct Refer to Frames 48 49 1 Ignition Electrode Flame Detection Reassemble the boiler in the following order 1 Ensure that the condensate trap siphon is full of wat...

Page 40: ...ER MUST NOT BE OPERATED without THE FRONT PANEL FITTED 44 fan replacement 1 Refer to Frame 43 2 Disconnect the electrical leads from the fan 3 Remove the clip from the gas control valve outlet 4 Remov...

Page 41: ...reverse order ensuring that the new gas seal supplied is located correctly in the injector housing 10 Check operation of the boiler Refer to Frames 32 33 4 3 3 46 burner REPLACEMENT 5 5 6 1 See Frame...

Page 42: ...hown 8 Reassemble in reverse order 9 Check the operation of the boiler Refer to Frames 32 33 47 return thermistor reNEWAL 1 Refer to Frame 43 2 Unclip the return thermistor from the return pipe and wi...

Page 43: ...me detection lead from the electrode 4 Remove the 2 screws retaining the detection electrode 5 Remove the electrode 6 Fit the new flame detection electrode using the new gasket supplied 7 Reassemble i...

Page 44: ...follows a Re connect the inline connector block b Ensure that the switched live to the boiler is off and that all DHW taps are shut and that pre heat is switched off c Hold the mode knob in the restar...

Page 45: ...ble in reverse order 10 a Turn power on b Displays 8 blue light on off first digit input second digit input 1st letter appliance type i e 2 4 c c Move knob to required setting standby summer winter No...

Page 46: ...o Frame 24 before proceeding to check operation of the boiler 5 Disconnect filling loop Refer to Frame 24 6 Check operation of the boiler Refer to Frames 32 33 CH Circuit Drain CH Flow Gas CH Return D...

Page 47: ...ing the 22mm pipe connection at top of pump chamber and bottom of heat exchanger and remove pipe Refer to Frame 59 no s 5 6 7 5 The automatic air vent head is retained in the pump body with a bayonet...

Page 48: ...me 43 2 Drain the boiler Refer to frame 57 3 Remove the condensate trap siphon Refer to Frame 53 4 Remove the electrical plug Refer to Frame 52 5 Place a flat bladed screwdriver in the diverter valve...

Page 49: ...rame 57 3 Pull off the two electrical connections 4 Using a suitable tool pull out the metal retaining clip 5 Carefully withdraw the pressure switch 6 Fit the new pressure switch and re assemble in re...

Page 50: ...ng gaskets or seals if any sign of damage is evident When replacing the spring clips located on the return pipe connection ensure clip is oriented to correctly match connecting pipe diameters 18 Ensur...

Page 51: ...to Frame 43 2 Remove the charge point cover 3 Recharge the tank pressure to 0 75 bar 4 Re assemble in reverse order 5 Check operation of the boiler Refer to Frames 32 33 REPLACEMENT 6 Refer to Frame 4...

Page 52: ...AME 79 RETURN THERMISTOR FAULT GO TO FRAME 80 OUTSIDE SENSOR FAULT LOW MAINS VOLTAGE CONTACT ELECTRICITY PROVIDER PCB FAULT REPLACE PCB Restart BOILER No CH but HW OK No HW but CH OK No Display GO TO...

Page 53: ...fer to Frame 50 Are these functioning correctly yes Check ignition electrode and associated harness for continuity visual condition and position Refer to Frame 48 Are these functioning correctly NO Ch...

Page 54: ...wiring from gas valve to PCB for continuity If the wiring is OK then replace the PCB no Replace Spark Generator and Harness as necessary no Replace Ignition Electrode and associated harness as necessa...

Page 55: ...C expect 1 000 1 100 Ohms Is the Thermistor value correct yes Is the wiring securely connected to the low voltage 6 way connector at the front left hand side of the PCB yes Replace PCB Fit a new Ther...

Page 56: ...he wiring at the Terminal Block and the PCB Is the wiring securely connected at both the boiler and Outside Sensor yes no Securely connect the wiring at both the boiler and Outside Sensor no yes 81 aL...

Page 57: ...yes no Move the mode knob to the Winter 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...

Page 58: ...isplay show d when a tap is on no no yes Are the flow rates correct as per Frame 2 Is the wiring between the PCB and the diverter valve motor connected yes yes Check diverter head fully engaged and cl...

Page 59: ...sed by Ideal Failure to do so could affect safety or performance of this appliance Comprehensive spares parts information and details of approved Ideal Parts Distributors are available on www idealpar...

Page 60: ......

Page 61: ...ommissioning checklist completed in full To instigate the boiler guarantee the boiler needs to be registered with the manufacturer within one month of the installation To maintain the boiler guarantee...

Page 62: ...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...

Page 63: ...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...

Page 64: ...as been followed e g Gas Safe Register Technical Bulletin TB 008 where chimney flues are in voids The ECGA should be of the correct type as specified by BS 7967 Prior to its use the ECGA should have b...

Page 65: ...are assembled 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 Rect...

Page 66: ...66 Notes Ideal Logic Combi Installation and Servicing...

Page 67: ...67 Notes Ideal Logic Combi Installation and Servicing...

Page 68: ...Technical Training Centre offers a series of first class training courses for domestic commercial and industrial heating installers engineers and system specifiers For details of courses please ring...

Page 69: ...hat have not been clearly authorised by Ideal For the very latest copy of literature for specification and maintenance practices visit our website www idealboilers com where you can download the relev...

Page 70: ...rrent ETCI rules for electrical installation It is essential that the instructions in this booklet are strictly followed for safe and economical operation of the boiler Electricity Supply This applian...

Page 71: ...mmer Conditions Domestic Hot Water only required Set the mode knob D to summer Set the central heating demand on the external controls to OFF The domestic hot water preheat will operate with the prehe...

Page 72: ...on to meet heating requirements This will depend on the house and radiators used Reducing the room thermostat setting by 1 C can reduce gas consumption by up to 10 Weather Compensation When the Weathe...

Page 73: ...s Warm water can also be poured onto the pipe from a watering can or similar DO NOT use boiling water 3 Caution when using warm water as this may freeze and cause other localised hazards 4 Once the bl...

Page 74: ...Check the time settings on the programmer are as you require and adjust if necessary Check the programmer internal or external to the boiler is in an ON position and the room thermostat is turned up...

Page 75: ...water but the appliance has reached the desired temperature set on the boiler The boiler is operating in central heating The boiler is operating in domestic hot water preheat The boiler is operating i...

Page 76: ...heck other gas appliances in the house are working to confirm a supply is present in the property 2 If other appliances do not work or there are no other appliances check the gas supply is on at the m...

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