Zanussi ULTRA+ COMBI 30 Installation And Servicing page 67

Set Boiler to Maximum Gas Rate
In accordance with boiler instructions,
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.
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.
equal to 20.6% OR CO
Turn off appliance and call the 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.
Check that no seals, e.g. Those on flue extensions, have
been displaced during installation. Rectify if necessary.
than 350ppm AND CO/CO
Turn off Appliance and Call 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.
Installation and Servicing
Start
Verify Flue Integrity
Is
O more than or
2
2
less than or equal to
0.2%?
No
Is
CO level less
2
ratio less than
0.0040?
No
Carry Out Flue Integrity Check Using Analyser
Insert analyser probe into air inlet test point (where available) and allow
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.
No
Check CO level and Combustion Ratio
Yes
With boiler still set at maximum gas rate,
sampling point. Allow readings to stabilise
No
In accordance with boiler instructions, set boiler to
operate at minimum rate (to minimum load condition).
Yes Allow sufficient time for combustion to stabilise.
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.
No
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.
readings to stabilise.
Is
O more than or
2
equal to 20.6% OR CO
less than or equal to
0.2%?
Yes
at Maximum Gas Rate
insert analyser probe into flue gas
before recording.
Is
CO level less
than 350ppm AND CO/CO
ratio less than
0.0040?
Yes
Set Boiler to Minimum Gas Rate
(*see opposite page)
Is
CO level less
than 350ppm AND CO/CO
ratio less than
0.0040?
Yes
Boiler is Operating Satisfactorily
No further actions required.
2
2
2
67