Start-up 6
0020189893_03 atmoMAG Installation and maintenance instructions
15
Volumetric method
2
1
▶
When carrying out the check, ensure that no additional
gases (e.g. mixtures of liquid gas and air) are fed in to
cover the peak demand. Contact the responsible gas
supply company for this.
▶
Ensure that no other gas appliances are operated during
the check.
▶
Start up the product.
▶
Turn the temperature selector
(1)
clockwise as far as it
will go in order to reduce the water volume and set the
maximum water temperature.
▶
Turn the power switch
(2)
as far as it will go anti-clock-
wise to set the maximum product output.
▶
Determine the required gas flow value at nominal heat
loading in accordance with the Tables of gas settings
(
→
Page 25).
▶
Note down the gas meter status.
▶
Draw off hot water with the water tap fully open to enable
the nominal water volume (
→
Page 25) to flow.
▶
After approx. five minutes of the product running in con-
tinuous mode, read off the gas flow value at the counter
and compare this with the gas flow value at nominal heat
loading in the Tables of gas settings (
→
Page 25).
Note
Deviations of
±
5% are permitted.
Conditions
: The deviation is greater than
±
5%
1
2
3
XXX
▶
Remove the burner. (
→
Page 18)
▶
Remove the jet holder. (
→
Page 18)
▶
Check whether the correct burner jets
(1)
have been
used in the jet holder
(3)
for the burner
(2)
by compar-
ing the labels on the burner jets with the specifications in
the Tables of gas settings (
→
Page 25).
▶
If incorrect burner jets are used, contact Vaillant Cus-
tomer Service. Do not start up the product.
▶
If the correct burner jets are being used, continue with
the following steps.
▶
Clean the burner. (
→
Page 19)
▶
Refit the burner assembly in the reverse order.
▶
Repeat the check of the heat input.
▶
If the deviation continues to be greater than
±
5%, adjust
the product load (
→
Page 17).
