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Vitodens 100-W, B1HA/B1KA 26 to 125 Combi Installation/Service
Start-up, Inspection and Maintenance
Check Neutralization Unit (if applicable)
IMPORTANT
IMPORTANT
1. Check the pH value of the condensate with a pH
measuring strip. If the pH value is less than 6.5,
replace
granulate.
2. If contaminated: Rinse neutralization unit with tap water.
3. Add granulate as marked on the cartridge.
pH measuring strip is field supplied.
The granulate is consumed as it neutralizes the condensate.
The red marking indicates the min. filling level.
Installation Instructions Neutralization Unit
WARNING
Follow cleaning agent manufacturer’s safety
instructions and wear appropriate protective equipment.
Clean Combustion Chamber/Heat Exchanger Surfaces
WARNING
Never use a metal wire brush or mechanically driven
brushes.
1. Remove burner assembly and reinstall upon
completion of service work as per the instructions
on page 57 in this manual.
2. Clean the combustion chamber
A
by vacuuming
loose debris out.
3. Remove embedded sediment from the stainless steel
heat exchanger surface
B
by thoroughly rinsing with
water or cleaning agents such as Axiom Industries
“Clean F Steel”. Follow Axiom handling and application
instructions when using cleaning agent.
Avoid getting the refractory wet during cleaning.
Note:
Discoloration of the heat exchanger surface
B
is the normal result of the combustion process.
It has no impact on the functionality or the
longevity of the heat exchanger.
4. Use a non-metallic brush if necessary, with a gentle
brushing motion to remove the embedded sediment.
Only
cleaning agents such as Axiom Industries
“Clean F Steel” should be used on the heat exchanger
surface
B
.
5. If the gaps between the heat exchanger coil windings
are plugged, carefully remove debris without
scratching the heat exchanger surface using the
Viessmann tool specific for this purpose.
Tool part number 7840112;
Replacement blade part number 7840346.
6. Flush the combustion chamber
A
with water until it
runs clear through the condensate trap.
7. Remove and clean out any accumulated debris from
condensate trap. Reinstall condensate trap.
See page 54 for details.
