6 Start-up
14
Installation and maintenance instructions atmoMAG 0020271929_00
1
2
▶
Start up the product with the product casing attached.
▶
Turn the temperature selector
(1)
clockwise as far as it
goes and turn the rotary power switch
(2)
anti-clockwise
as far as it goes in order to set the lowest water volume
and the maximum gas volume.
▶
Open a hot water tap.
▶
Ensure that the water pressure is at least 0.13 MPa
(1.3 bar) during the test.
▶
Operate the product until a steady state is reached (ap-
prox. 10 minutes).
▶
Block off the flue gas route with a Vaillant flue gas re-
strictor, for example. Also observe the documentation
enclosed with the flue gas restrictors.
◁
The flue gas sensor must automatically interrupt the
gas supply within two minutes.
▶
Close the hot water tap.
▶
Allow the flue gas sensor to cool for at least 10 minutes.
▶
Start up the product again.
1
▶
Clear any faults from the product by opening the hot wa-
ter tap again and switch the product on and off again by
pressing the main switch
(1)
a second time.
▶
If resetting does not work or the product is repeatedly
blocked by a safety device, check the product or contact
Vaillant Customer Service.
▶
In this case, shut down the product.
6.5
Checking the gas flow pressure
1
▶
Close the gas stopcock.
▶
Unscrew the sealing screw
(1)
from the test nipple on the
gas valve assembly.
▶
Remove the seal.
▶
Connect a manometer to the test nipple on the gas valve
assembly.
▶
Open the gas stopcock.
▶
Start up the product in accordance with the operating
instructions and draw off domestic hot water.
▶
Measure the gas flow pressure.
Applicability:
Germany
OR Austria
OR Switzerland
Gas family
Permissible gas flow pres-
sure
Natural gas
G20 (DE, AT, CH)
G25 (DE)
1.7
–
2.5 kPa (17
–
25 mbar)
1.8
–
2.5 kPa (17
–
25 mbar)
Liquid gas
G31 (DE, AT)
G31 (CH)
4.25-5.75 kPa (42.5-
57.5 mbar)
2.5-4.5 kPa (25-45 mbar)
Applicability:
Belgium
Gas family
Permissible gas flow pres-
sure
Natural gas
G20
G25
1.7
–
2.5 kPa (17
–
25 mbar)
2.0-3.0 kPa (20-30 mbar)
Liquid gas
G31
2.5-4.5 kPa (25-45 mbar)
