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44

9 APPENDIX 

2

FLOWCHART FOR CO AND COMBUSTION RATIO CHECK ON COMMISSIONING A CONDENSING BOILER

PRIOR TO CO AND COMBUSTION RATIO CHECK

The installation instructions should have been followed, gas type verified and gas supply pressure/rate checked as required prior to commissioning. 

As part of the installation process, 

ESPECIALLY WHERE A FLUE HAS BEEN FITTED BY PERSONS OTHER THAN THE BOILER INSTALLER

, visually check the integri-

ty of the whole flue system to confirm that all components are correctly asembled, fixed and supported. Check that manufacturer's maximum flue lengths have not

been exceeded and all guidance has been followed (e.g. Gas Safe Technical Bulletin TB008).

The flue gas analyser should be of the correct type, as specified by BS 7967

Prior to its use, the flue gas analyser should have been maintained and calibrated as specified by the manufacturer. The installer must have the relevant competence

for use of the analyser.

Check and zero the analyser IN FRESH AIR as per analyser manufacturer's instructions.

NOTE  

the air gas ratio valve is factory-set and must not be adjusted DURING

COMMISSIONING unless this action is recommended after discussions

with SIME LTD.

If any such adjustment is recommended and further checking of the boiler

is required the installer/service engineer must be competent to carry out

this work and to use the flue gas analyser accordingly.

If the boiler requires conversion to operate  with a different gas family

(e.g. conversion from natural gas to LPG) separate guidance will be provi-

ded by the boiler manufacturer and must be followed.

SET BOILER TO MAXIMUM RATE

Set the boiler to operate at maximum rate (full load condi-

tion). Allow sufficient time for combustion to stablilise. 

NOTE - Do not insert analyser probe during this period

to avoid possible "flooding" of sensor.

CARRY OUT FLUE INTEGRITY CHECK USING ANALYSER

Insert analyser probe into the air inlet test point and allow readings

to stabilise. 

NOTE - The flue must always be installed with flue test point.

This will be located within the first piece connected to the boiler.

Is O

2

less than 

or equal to 20.6% 

and 

CO

2

less than 0.2%

VERIFY FLUE INTEGRITY  

Analyser readings indicate that combustion products and inlet air must be

mixing. Further investigation of the flue is therefore required.

Check that flue components are assembled, fixed and supported as per boi-

ler/flue manufacturer's instructions.

Check that flue and flue terminal are not obstructed. 

Is O

2

less than 

or equal to 20.6% 

and 

CO

2

less than 0.2%

CHECK CO AND COMBUSTION RATIO  AT MAXIMUM RATE

With boiler still set at maximum rate, insert analyser probe into

flue gas samplng point. Allow readings to stablise before recording.

Turn off appliance and call SIME

LTD Technical HelplIne for advice.

the appliance must not be com-

missioned or used, until problems

are identified and resolved.

Is CO less than 350ppm 

AND 

CO/CO

2

ratio less than 0.004 

Check all seals around the appliance

burner, internal flue seals, door and

case seals. Rectify where necessary.

SET BOILER TO MINIMUM RATE

In accordance with boiler instructions, set boiler to operate at

minimum rate (to minimum load condition). Allow sufficient time for

combustion to stablilise. 

NOTE: If manufacturer's instructions do not specify how to set

boiler to minimum rate contact Technical Helpline for advice.

CHECK CO AND COMBUSTION RATIO AT MINIMUM RATE

With boiler set at minimum rate, insert analyser probe into flue gas

samplng point. Allow readings to stablise before recording.

NOTE - if no flue gas sampling point is present and the correct pro-

cedure is not specified in the manual, contact SIME LTD Technical

Helpline for advice.

Is CO less than

350ppm 

AND

CO/CO

2

ratio 

less than 0.004

Turn off appliance and call SIME LTD

Technical HelplIne for advice.

the appliance must not be commissio-

ned or used until problems are identi-

fied and resolved.

NOTE

Check and record CO and combustion

ratio at both maximum AND minimum

rate before contacting  SIME LTD.

Is CO less than 350ppm 

AND 

CO/CO

2

ratio 

less than 0.004 

BOILER IS OPERATING SATISFACTORILY 

no further actions required

Ensure test points are capped, boiler case is correctly repleced and all other commissioning pro-

cedures are completed.

Complete Benchmark Checklist, recording CO and combustion ratio readings as required.

NO

YES

YES

NO

NO

YES

YES

NO

NO

YES

Summary of Contents for COMFORT 30

Page 1: ...VICING INSTRUCTIONS ENSURE THAT THESE INSTRUCTIONS ARE LEFT FOR THE USER AFTER COMPLETION OF THE BENCHMARK SECTION PLEASE READ THE IMPORTANT NOTICE WITHIN THIS GUIDE REGARDING YOUR BOILER WARRANTY UK...

Page 2: ...any surfaces carpets or floorings Use a suitable container to catch any water that escapes when removing the protective caps from the connections SAFE HANDLING IMPORTANT NOTICE For the first year all...

Page 3: ......

Page 4: ...standards of installation and commissioning of domestic heating and hot water systems in the UK and to encourage regular servicing to optimise safety efficiency and performance Benchmark is managed a...

Page 5: ...ter and the correct pressure showing on the pressure gauge Is the Auto Air Vent open Has the pump been rotated manually Is the gas supply working pressure correct Is the boiler wired correctly See ins...

Page 6: ...tured and sold by do not contain any banned materials or substances ie they comply with ISO9000 2000 1 DESCRIPTION OF THE BOILER 65 65 60 70 M U G E R M U G E R 125 15 450 60 100 139 183 50 39 30 10 6...

Page 7: ...he heating expansion vessel bar 1 0 D H W setting range C 10 60 D H W flow rate EN 625 l min 13 4 Continuous D H W flow rate t 30 C l min 14 4 Minimum D H W flow rate l min 2 2 D H W pressure min max...

Page 8: ...elease vent 11 D H W flow switch 12 Water inlet filter 14 Pressure relief valve 15 Water pressure switch 16 Automatic bypass 17 Drain vent 18 Expansion vessel 19 Condensate drain trap 21 D H W isolati...

Page 9: ...ain trap 3 C H sensor SM 4 Safety thermostat 5 Ignition electrode 7 Primary exchanger 8 Air release vent 9 Limit stat 10 Exhaust temperature sensor 11 Smoke chamber 12 Expansion vessel 13 Air inlet 14...

Page 10: ...pe should be a minimum of 15 mm and should be able to withstand boiling water any should avoid sharp corners or upward pipe runs where water may be retained Gas Connection The gas connection must be m...

Page 11: ...ucts for the flushing and final treatment of the system water This is particularly important in hard water areas Artificially softened water must not be used to fill the heating system It is important...

Page 12: ...external perimeter walls of the building To provide some indications of possible solutions Table 4 gives the minimum distances to be observed with reference to the type of building shown in fig 9 120...

Page 13: ...inal is fitted within 850 mm 34 in of a plas tic or painted gutter or 450 mm 18 in of painted eaves an aluminium shield at least 1 500 mm 59 in long must be fitted to the underside of the painted surf...

Page 14: ...s valve coil VD Divertor valve SM C H sensor TS Safety thermostat TFU Thermal fuse TL Limit stat FL D H W flow switch SF Exhaust temperature sensor PA Water pressure switch TA Room thermostat SE Exter...

Page 15: ...re than two seconds to enter standby RESET is only available if a re settable error is signalled D H W SET Press the key to display the D H W temperature value set HEATING SET Press the key to display...

Page 16: ...0 PAR 14 C 1 20 14 Maximum heating temperature PAR 13 80 C 1 80 15 Maximum heating power 30 99 1 99 16 Post circulation time 0 99 10 sec 1 03 17 Pump heating activation delay 0 99 10 sec 1 01 18 Re ig...

Page 17: ...hich guarantees reaction in the case of accidental extinction or lack of gas within one second 3 6 1 Functioning cycle Burner ignition should occur within 10 seconds of the opening of the gas valve If...

Page 18: ...100 485 200 480 300 471 400 462 500 445 600 423 700 391 800 352 900 300 1050 222 iQE COMFORT 30 Fig 15 Fig 14 KEY 1 Condensate drain trap 2 Diverter valve 3 D H W exchanger 4 Gas valve 5 D H W flow s...

Page 19: ...this value using or Exit the parameters section by pressing The table below gives the values to set when the supply gas is changed 4 2 2 Calibrating the gas valve pressures See 4 8 1 This can only be...

Page 20: ...maximum Hi and at minimum Lo power From that moment the boiler will start working in heating mode at maximum power with cut off at 80 C and re ignition at 70 C Before activating the chimney sweep fun...

Page 21: ...ct combustion having first checked That the boiler has been installed in accordance with these instructions The integrity of the flue system and the flue seals The integrity of the boiler combustion c...

Page 22: ...nnect the fan wiring Remove the four nuts securing the burner to the heat exchanger Carefully lift out the burner Check seals and replace if necessary Replace in reverse order Test for gas tightness 4...

Page 23: ...Fitted Not required Thermostatic radiator valves Fitted Not required Automatic bypass to system Fitted Not required Boiler interlock Provided ALL SYSTEMS s instructions Yes What system cleaner was use...

Page 24: ...in rate Where Possible CO ppm AND CO Comments Signature SERVICE 04 Date Engineer name Company name Telephone No Gas safe register No Record At max rate CO ppm AND CO At min rate Where Possible CO ppm...

Page 25: ...leads from L to E if meter reads other than infinity there is a fault which should be isolated A detailed continuity check is required to trace the faulty component IMPORTANT These series of checks a...

Page 26: ...obtained a flue gas analysis must be done See section 4 2 2 9 Press the button to return the boiler to minimum output Lo will be displayed 10 Check the analyzer CO2 Ratio and compare to values reporte...

Page 27: ...ER PRESSURE SWITCH Isolate boiler Remove cover Isolate flow and return valves Drain boiler using drain vent Remove clip below the switch Disconnect the wiring Lift switch upwards Refit in reverse orde...

Page 28: ...28 7 EXPLODED VIEWS...

Page 29: ...29...

Page 30: ...ring 2031 24 6278812 Air gas hose upper side 25 6226465 O ring diam 183 83x2 62 26 6174809 Gasket for ignition electrode 27 6221644 Ignition electrode 28 6221645 Ionisation electrode 29 6174816 Gasket...

Page 31: ...42 Spring clip 89 6226640 Spring clip 90 6119357 Brass cap 91 6226641 Spring clip 92 6040215 Pressure relief valve 3 bar 93 6226472 ORing 17 86x2 62 94 6272331 Circulating pump 95 6013182 Automatic ai...

Page 32: ...the possibility that UK weather patterns will show more extremes in future due to the effects of global climate change the following guidance updates previous recommendations on condensate drainage p...

Page 33: ...n be removed using a proprietary condensate pump of a specification recommended by the boiler or pump manufacturer The pump outlet should discharge to a suitable internal foul water discharge point su...

Page 34: ...ion then the connection method shown in Figure 4 should be used together with the measures on insulation etc as described above and shown in the diagram When a rain water downpipe is used as the termi...

Page 35: ...for householders on remedial actions which can be taken if a condensate drainage pipe freezes This may result in requests for alteration to condensate drainage pipework in which case the guidance abov...

Page 36: ...rnal soil and vent stack Key 1 Boiler 2 Visible air break 3 75 mm trap 4 Visible air break and trap not required if there is a trap with a minimum condensate seal of 75 mm incorporated into the boiler...

Page 37: ...red if there is a trap with a minimum condensate seal of 75 mm incorporated into the boiler In this case the 100 mm is measured to the trap in the boiler 5 Sink basin bath or shower 6 Open end of cond...

Page 38: ...isible air break at plug hole 3 75 mm sink basin bath or shower waste trap 4 Sink basin bath or shower with integral overflow 5 Open end of condensate drainage pipe direct into gully 25 mm min below g...

Page 39: ...39 IND GUIDE INST 10 11 HHIC REF T11 0027BRev8 Figure 3 Connection of a condensate pump typical method NB manufacturer s detailed instructions should be followed...

Page 40: ...nimum up to three storeys 2 Visible air break 8 Minimum internal diameter 19 mm 3 75 mm trap 9 Pipe size transition point 4 Visible air break and trap not required if there is a trap with a minimum co...

Page 41: ...drain Key 1 Condensate discharge pipe from boiler 7 Air gap 2 Pipe size transition point 8 68 mm PVCu strap on fitting 3 Water weather proof insulation 9 Minimum internal diameter 19 mm 4 43 mm 90 ma...

Page 42: ...required if there is a trap with a minimum condensate seal of 38 mm incorporated into the boiler 5 External length of pipe 3 m maximum 6 Open end of condensate drainage pipe direct into gully 25 mm m...

Page 43: ...above or below ground level End cut at 45 3 Diameter 100 mm minimum plastic tube 4 Bottom of tube sealed 5 Limestone chippings 6 Two rows of three 12 mm holes at 25 mm centres 50 mm from bottom of tub...

Page 44: ...to the boiler Is O2 less than or equal to 20 6 and CO2 less than 0 2 VERIFY FLUE INTEGRITY Analyser readings indicate that combustion products and inlet air must be mixing Further investigation of th...

Page 45: ...NOTES...

Page 46: ...NOTES...

Page 47: ......

Page 48: ...iqe co uk Trade House BA22 8RT Phone 0800 0152252...

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