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VARMAX -
Installation, Use and Maintenance
7.2.
Verification of the boiler's environment
Before carrying out any maintenance work, it is necessary to perform a
certain number of checks concerning the installation's use.
• Water pressure: check that the water pressure is higher than 1 bar when
cold.
• Read the makeup water meter. This operation helps to identify any
hydraulic leaks. If consumption of makeup water changes, seek the
cause and repair.
7.3.
Replacing the air filter matting
DANGER:
To make sure this task is performed in safety, switch off the boiler and
cut off the upstream power.
Main exchanger drain valve
(front of boiler)
Condenser drain valve
(rear of
boiler)
U0502206-#
figure 35 -
Drain valves
7.1. Boiler draining
•
Close the shut-off valves of the flow and return
tappings.
• Connect the drain valves (main exchanger and
condenser) to the drain with a suitable hose.
• Create an air intake on the "main exchanger"
flow nozzle (open the safety valve).
• Open the drain valve.
DANGER:
Use personal protective equipment (mask and gloves) to remove the
used air filter.
INFORMATION:
The air filter is only present on boilers connected to a B23 or B23P
chimney.
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