Cleaning The Burner And Primary Heat Exchanger - Vaillant turboMAX pro 24/2 E Instructions For Installation And Servicing

9 Servicing

9.2 Cleaning the burner and primary heat exchanger

• Turn off the boiler.
• Isolate the electrical supply to the boiler.
• Remove the boiler case as described.
• Turn off the gas service valve.
• Turn off the boiler CH service valves.
• Turn off the cold water inlet service valve.
• Release the three clamps (1), remove the combustion
chamber cover (2).
• Pull the three cables (4) and two tubes (5) from the
fan assembly.
• Remove the fan assembly (6a, 6b, 6c).
• Remove the four screws (7) and detach the front
cover panel from the combustion chamber (8).
• Check the burner (9) and heat exchanger fins (10) and
remove any loose deposits with a soft brush.
• Reassemble in reverse order.
• Check central heating expansion vessel.
Note!
It is not necessary to carry out this check
every year – a check every three years should
be sufficient.
• Release the system water pressure from the boiler.
• Remove valve cap from expansion vessel charge point.
• Check that the internal charge pressure of expansion
vessel is between 0.7 - 0.9 bar. If pressure is lower
than this the vessel should be re-pressurised using an
air pump.
• Refit valve cap.
• Open central heating service valves and re-pressurise
the boiler and heating system if necessary.
• Open the gas service valve.
• Turn on the mains power supply.
• Operate the boiler and carry out soundness, safety
and function checks.
• Complete the service interval record section in the
Benchmark gas boiler commissioning checklist.
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1
4
5
5
8
7
Fig. 9.1 Cleaning the burner and primary heat exchanger
Instructions for Installation and Servicing turboMAX pro R3
2
6c
6a
6b
10
9