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11.1.7 Cleaning/replacing the ignition/ionization
rod
CAUTION
Turn electrical off, then ensure gas has been shut off
at the main shut off valve. Next purge all gas in the
system as per code. The ignition/ionization rod may be
hot, allow enough time to let boiler cool before removing
the ignition/ionization rod.
To service the ignition and flame ionization rod, remove the
two retaining screws on the electrode assembly, remove
assembly and examine for wear and dirt, clean and re-gap
electrode 1/8" [3mm] re-fit if in good condition (replace
gasket if necessary).
Replace electrode assembly if necessary – then discard
screws and gasket and fit replacement assembly c/w new
gasket and screws making sure that the earth connection
is in good condition and in contact with the base plate and
refit safety bracket.
11.1.8 Filter maintenace and filter replacement
The filter shall be replaced under the following conditions:
1. The filter has been in service for more than one a year, or
2. The ∆p between pressure connections 1 and 2 > 2" In. W.C., or
3. The ∆p between pressure connections 1 and 2 is twice as high
compared to the last inspection.
Procedure for replacing filter
1. Interrupt upstream gas supply by closing the manual shutoff
valve.
2. Remove screws 1-2.
3. Change filter insert 3
4. Tighten screws 1-2 using a small force (5Nm).
5. Open the manual shutoff valve.
6. Perform leakage and function test, pmax = 5 PSI.
Absolute Boilers ABS 1500-2000-2500-3000-4000
Ensure a gap of 1/8 inch exists (3 mm)
71
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