9
Initial start-up, inspection and maintenance
Inspection and maintenance (cont.)
11. Checking mixer for easy operation and leaks
1. Remove the motorised lever from
the mixer handle, and check the
mixer for ease of movement.
2. Check the mixer for leaks.
Replace the OĆrings if the mixer
leaks.
3. Snap the motorised lever into
place.
12. Checking the draught stabiliser (if installed)
Release the latch on the control disc.
The control disc must swing freely
during burner operation.
13. Burner settings
Burners up to 63ĂkW Burner service instructions
Burners from 80ĂkW
Adjust the max. burner oil or gas
throughput so that the stated
maximum rated boiler output will
not be exceeded.
Note that, for multi-stage or
modulating burners, the flue gas
system must be suitable for the low
flue gas temperatures which may
arise during partial load operation.
Select the lowest partial load stage,
also taking the respective flue gas
system design into consideration.
Two stage
The following minimum output is
required for the base load stage to
protect the system against dew point
corrosion:
Rated
output
kW
Minimum output to be set
(1
st
Ăburner stage)
or base load
kW
ă80
100
48
60
Modulating
For oil-fired operation, the minimum
boiler water temperature is 60ĂºC and
for gas-fired operation 65ĂºC.
Adjust the return temperature raising
facility to at least 53ĂºC.
5692Ă531ĂGB
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