6 Start-up
16
Installation and maintenance instructions atmoMAG 0020189893_03
Burner working pressure test
1
▶
Unscrew the sealing screw from the measuring nipple
(1)
for the burner pressure.
▶
Remove the seal.
▶
Connect a pressure gauge (resolution at least 0.1 bar).
▶
Start up the product.
▶
Turn the temperature selector clockwise as far as it will
go in order to reduce the water volume and set the max-
imum water temperature.
▶
Turn the power switch as far as it will go anti-clockwise to
set the maximum product output.
▶
Draw off hot water with the water tap fully open to enable
the nominal water volume (
→
Page 25) to flow.
▶
Look up the required burner pressure in the Tables of
gas settings (
→
Page 25) and compare the value with the
corresponding value in the table.
Note
Deviations of
±
10% are permitted.
▶
Remove the pressure gauge.
▶
Place the sealing screw and the seal on the measuring
nipple, tighten the sealing screw and check that it is leak-
tight.
Conditions
: The deviation is greater than
±
10%
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
±
10%, adjust
the product load (
→
Page 17).
