Installation & Servicing instructions
AT
AG XL
51
13
Inspection and maintenance
Boiler maintenance is only to be carried out by qualified staff with calibrated
equipment.
When replacing spare parts only original ATAG Service parts are to be used. For
this purpose, please refer to the Service parts list to find article numbers and
exploded views. Please contact ATAG Heating UK.
13.1 Maintenance intervals
Maintenance has to be carried out after 16,000 operational hours max. or every 4 years,
whatever comes first.
Depending on the intensive use of the device, maintenance intervals will have to be
decreased accordingly. For other situations, maintenance intervals may also have to be
decreased. In such cases, please contact ATAG for additional advice.
Inspection and maintenance tasks have to be carried out in accordance with the mainte-
nance instructions at all times. Some tasks are described in these maintenance instruc-
tions. For complete inspection and maintenance instructions, please refer to Search
Help ATAG XL.
When carrying out maintenance on the boiler, the gas tap has to be closed and
secured against opening.
The housing has to be removed in order to carry out maintenance jobs on the boiler. The
housing has been secured by 4 quick-lock nuts. First, remove the screws from the quick-
locks, open the quick-locks, lift up the housing from below and move it away to the front.
13.2 Checks prior to commissioning
Changing settings such as burner pressure and setting the amount of air is not necessary.
Only in the case of failures or replacement of the gas unit, venturi and/or ventilator, does
one have to check and adjust the zero-pressure control and O
2
percentage accordingly
(Refer to Help reference).
Following maintenance tasks always check all gas-conducting components on
leakages by use of leakage detection fluid (LDF).
Removing housing
figure 13.1.a
