Servicing - Glow-worm Ultracom 24cxi Installation And Servicing

2
1
2B
2A
Key
1 Throttle
2 Combustion analyser sample point
3 Cap
18.3.3 Maximum rate check and adjustment
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To verify the maximum gas rate CO2 setting the
appliance must be checked at the maximum rate.
Activate the test mode "P.01" and set the value to 100 in
Wait approximately 5 minutes to read a stabilised CO2 value.
the "check" column.
G20 Burner % CO2
Model Check (case on)
9.2 ± 0.3%
24cxi
30cxi 9.2 ± 0.3%
35cxi 9.2 ± 0.3%
G31 Burner % CO2
Model Check (case on)
24cxi 10.3 ± 0.3%
10.3 ± 0.3%
30cxi
35cxi 10.3 ± 0.3%
0020085231_02 - 05/10 - Glow-worm
3
Setting (case off) CO/CO2 ratio
9 ± 0.2% 0.004
9 ± 0.2% 0.004
9 ± 0.2% 0.004
Setting (case off) CO/CO2 ratio
10.1 ± 0.2% 0.004
10.1 ± 0.2% 0.004
10.1 ± 0.2% 0.004
If the combustion reading is not within the acceptable values
combustion rate of the appliance.
i
to stabilise before checking or making further
Rotate the "throttle" (1) (anti-clockwise to increase), to the
required CO2, refer to previous diagram and the "Setting"
column in the table.
test modes.
Remove the analyser probe and replace the cap on the
sampling point, replace the controls fascia, and the front
casing panel.
i
Remember to replace the sample point cap on
completion of the test.
18.3.4 Gas rate check
Check the gas rates as described in the commissioning
section.
18.3.5 Completion
If it is not possible to achieve the required results for either the
combustion or gas rates, it will be necessary to complete a full
service of the appliance and then repeat the combustion check
procedure.
combustion values are still unacceptable and after further
remedial work has been carried out, the appliance must be
disconnected until the CO/CO2 ratio is acceptable.
Advice can be sought from the Glow-worm Technical
Helpline.
18.4

Servicing

i
necessary to complete a full service.
All routine servicing requirements can be achieved by the
removal of the front panel.
Position the control box into the service position.
Before commencing with a service or replacement of parts,
isolate the boiler from the electrical and gas supplies.
18.4.1 Service interval record
Refer to benchmark book stapled in the centre pages of this
manual.
MAINTENANCE
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