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Värmebaronen Vedolux -350, -450 and -650
The test can only be selected when the boiler is in
operation.
Before the test, the boiler must have been in operation
long enough that its power corresponds to normal
operation.
Information
Aggregate test
Safety test
Safety test+
[sec.] 30
When the boiler temperature has risen to 203 – 212°F, the
max. temperature thermal relay, STB, will be tripped and the
fan will stop: This is displayed after a few seconds with ‘STB
tripped’. The test has been completed with a positive result.
Testing the thermal valve, if one is fitted:
If you press
after STB has been tripped, the charging
pump is switched off until the boiler reaches 230°F so that
the thermal valve, STW, can be tested. STW should now keep
the boiler’s temperature below 230°F. If it does, the test of
the thermal safety valve has been completed with a positive
result.
Settings
E N D
Boiler temp.
[°F] ---.-
During the test,
must be kept pressed in or
be pressed every 30 seconds.
The test is limited to maximum 30 minutes.
Safety test
Effiency test
The efficiency test is performed with the boiler
connected to a partial storage, due to that the boiler
can be operated at nominal output even when the
heat demand is low. The efficiency for the combustion
will be the same even if the heat demand is high or
low.
The heat demand may affect the efficiency for the
complete installation by the heat losses, the heat
losses will be the same regardless the heat demand;
but will be a greater part compared with the used
heat if the heat demand is low.
The location of the boiler and storage tank will affect
the heat losses and thereby the efficiency, if the
installation is located in a heated area the heat losses
will be smaller and if the heat losses can be used to
heat a living area the efficiency will increase. If the
installation are located in a cold building the heat
losses will be both greater and there will not be any
use for the heat losses.
The efficiency can be calculated from higher (HHV) or
lower heat value (LHV). An efficiency calculated from
LHV will give a higher result in percent compared with
a calculation from the HHV. The efficiency for Vedolux
is calculated from the HHV.
The highest efficiency for the boiler will be found
when it is operated at nominal output, all attempts
to increase or reduce the output from the boiler risk
to affect the efficiency in a negative way. The output
from the system shall be controlled by the output
from the accumulator. During start up and end phase
the content of CO in the flue gas can be significant,
but when the combustion temperature is high and
the combustion is normal there will only be a small
content of CO in the smoke, less CO if the fuel are
well seasoned but it can be a quite high content if
the fuel are damp. CO is invisible, odorless gas. CO
are toxic and can be deadly. Pay attention to leakage
from the boiler or flu gas duct. Smoke monitors are
recommended to detect leakage.
CO, average in dilution tunnel:
Boiler
Cat I >15% load Cat IV 100% load Unit
Vedolux 350 0.06
0.08
g/min
Vedolux 450 0.06
0.012
g/min
Vedolux 650 0.18
0.013
g/min