Bedienungsanleitung Morco GB30 (Seite 35 von 36) (Englisch)

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SECTION 10 - COMBUSTION CHECK

Yes

CO level less

than 350ppm AND CO/CO

ratio less than

0.0040?

Turn off Appliance and Call Morco Technical Helpline

The appliance must not be commissioned until problems

are identified and resolved. If commissioning cannot be

fully completed, the appliance must be disconnected from

the gas supply in accordance with GS(I&U)R. NOTE:

Check and record CO level and combustion ratio at both

maximum AND minimum rate before contacting Ideal.

CO level less

than 350ppm AND CO/CO

ratio less than

0.0040?

Set Boiler to Maximum Gas Rate

In accordance with boiler instructions,

(by fully turning on hot tap) set boiler to

operate at maximum rate (full load

condition). Allow sufficient time for

combustion to stabilise.

Note. Do not insert analyser probe during this

period to avoid possible flooding of sensor.

Check CO level and Combustion Ratio

at Maximum Gas Rate

With boiler still set at maximum gas rate,

insert analyser probe into flue gas

sampling point. Allow readings to stabilise

before recording.

Set Boiler to Minimum Gas Rate

(*see opposite page)

In accordance with boiler instructions, set boiler to

operate at minimum rate (to minimum load condition).

Allow sufficient time for combustion to stabilise.

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 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. Rectify if necessary.

Turn off appliance and call Morco Technical Helpline for advice

The appliance must not be commissioned until problems are identified

and resolved. If commissioning cannot be fully completed, the appliance

must be disconnected from the gas supply in accordance with GSIUR.

Carry Out Flue Integrity Check Using Analyser

Insert analyser probe into air inlet test point (where available) and allow

readings to stabilise.

Note. Where no air inlet test point is provided then a flue integrity check with

the analyser is not possible. The installer should verify that flue integrity has

been visually checked in accordance with the “Prior to CO level and

combustion ratio check” (see opposite page) before proceeding to the

“check CO level and combustion ratio at maximum rate” stage below.

O2 more than or

equal to 20.6% OR CO

less than or equal to

0.2%?

CO level less

than 350ppm AND CO/CO

ratio less than

0.0040?

2 more than or

equal to 20.6% OR CO

less than or equal to

0.2%?

Boiler is Operating Satisfactorily

No further actions required.

Ensure test points are capped, boiler case is correctly replaced and all

other commissioning procedures are completed. Complete Benchmark

Checklist, recording CO and combustion ratio readings as required.

Check CO and Combustion Ratio at Minimum Gas Rate

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

gas sampling point. Allow readings to stabilise before recording.

Start

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Morco GB30 Seite 35

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