Hoval TopGas classic 100, Technical Information Installation Instructions

Page: 37 / 48

37 4 219 316 / 00
COMMISSIOnInG
Setting is performed as follows:
a)
Check the setting of the minimum and maximum speed
of rotation at the automatic function device in ac cor dan ce
with the parameter list.
b)
Establish the gas and electrical connections for the boil er.
Press the "MODE" and "+" keys to switch to ser vice mode!
- Display on the screen in Service mode:
the current level alternates with "SEr" on the display!
- after accessing this operating mode, an output of 50 %
is applied.
The output can then be set to between 0 % and 100 %
using the "+" and "-" keys.
- Exit this operating mode:
by pressing the Reset key or automatically after 20 mi-
nutes.
Use the "+" key to set the boiler to 100 %. Check the
CO
2
(O
2
) content of the flue gas. It has to be between
CO
2
= 8,5 - 8,8 (O
2
= 5,9 - 5,5) vol.-% (dry). Correct the
CO
2
(O
2
) value if necessary by turning the throttle screw
C (Fig. 05). Then check the gas flow rate at the gas me -
ter (volumetric method). To calculate the gas flow rate
which should be set, you require the net heating value
H
uB
, which you can ob tain from your gas company.
The adjustment value is calculated as follows:
Setting value E =
Heat load NB (kW)
Operation calorific value H
uB
(kW/m
3
)
=
NB
x
1000 l
H
uB
60 min
The gas flow rate is corrected by changing the fan speed:
- Increase in the max. fan speed at the automatic func-
tion device: -> gas flow rate increases (at constant CO
2
(O
2
) value)
- Decrease in the max. fan speed at the automatic func-
tion device: -> gas flow rate decreases (at constant CO
2
(O
2
) value)
c)
Use the "-" key to set the boiler to 0 %.
Check the CO
2
(O
2
) content of the flue gas. It must be be -
tween CO
2
= 8,5 - 8,8 (O
2
= 5,9 - 5,5) vol.-% (dry). Correct
the CO
2
(O
2
) value if necessary by turning the offset screw
D (remove the protective cap first).
CO
2
(O
2
) setting
Fig. 06
d)
Measurement of NOx and CO content. The measured
va lues must meet the limiting values prescribed by the
regulations. Values exceeding these reference va lues are
an indication of faulty burner setting, gas bur ner or heat
exchanger contamination or gas burner defect.
!
WARNING
If the limiting values prescribed by the regu-
lations are exceeded, the boiler must be
put out of operation and the corresponding
meas ures for repair work must be initiated.
After a correction, the upper/lower limit should be approa-
ched again for testing/correction purposes.
The boiler is now correctly set. To return to normal opera-
tion, press "RESET".
4.6.3.2 Changing to a different type of gas
!
WARNING
Changes are only to be carried out by a rec-
ognised specialist!
After changing to a different type of gas, the
adjusting device must be sealed.
The boilers are preset at the factory to natural gas H
(Wobbe value 15,0 kWh/m
3
).
Changing from natural gas H to natural gas L
Changeover to low-calorie natural gas can be performed
easily. All you need to do is check/correct the CO
2
(O
2
)
value at at maximum and minimum output (see chapter
4.6.3.1).