Viessmann B0KA - Checking the Flow Limiter (Only for Gas Condensing Combi Boiler)

46
B
2.
4.
3.
A
Fig. 36
1. Drain the boiler on the DHW side.
2. Remove the spring clip.
3. Remove the DHW flow sensor.
4.
Check flow limiter
A
and filter strainer
B
. Replace if
scaled or damaged.
Note
The taper of filter strainer
B
must be installed in the
direction of flow.
Note
Filter strainer
B
is only installed in appliances as
shown in the diagram on the right:
B
Fig. 37
5. Mount DHW flow sensor with new gaskets.
Danger
Risk of electric shock from escaping heating
water or DHW.
Check all water side connections for leaks.
Flow limiter
Appliance type Flow rate
l/min
Colour
BOKA-25 (GB) 12 Red
BOKA-30 (GB) 14 Pink
BOKA-30-M (GB) 14 Pink
Commissioning, inspection, maintenance
Checking the flow limiter (only for gas condensing combi boiler)
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