Initial Operation; Checking The Gas Setting; Comparing The Gas Setting With The Gas Supply; Checking The Gas Connection Pressure - Vaillant atmoMAG mini 11-0/0 XI Manuel D'utilisation

5 Initial operation

6 Initial operation
Initial start-up and operation of the appliance, and
instruction for the user, must be performed by a quali-
fied technician.
You must check the gas setting and put in the batteries
before initial operation.
For subsequent operation, see section 5.3 of the operat-
ing manual.
6.1

Checking the gas setting

>
Use the gas setting tables in section 6.2 for compari-
son.
6.1.1 Comparing the gas setting with the gas
supply
>
Compare the information on the appliance design
(category and set gas type) on the type plate with the
type of gas available on site. You can obtain informa-
tion from the local gas supply company.
If they do not match:
>
Convert the appliance to the available gas type,
see 6.5.
6.1.2

Checking the gas connection pressure

1
Fig. 6.1 Measuring port for gas connection pressure
You can check the gas connection pressure using a fluid
pressure gauge (resolution at least 0.00001 MPa
(0.1 mbar). This is how to do it:
>
Close the gas shut-off cock.
>
Remove the plug screw of the connection pressure
measuring port (1) (see Fig. 6.1 Measuring port for gas
connection pressure).
>
Connect a U-pipe pressure gauge.
>
Open the gas shut-off cock.
>
Start up the appliance according to the operating
manual and draw off hot water.
14
>
Measure the connection pressure (gas flow pressure).
Gas types
Natural gas 2H
G 20
Liquid gas 3B/P
G 30/G 31
Liquid gas 3+
G 30
G 31
Table 6.1 Gas connection pressure range
b
Caution!
Risk of damage due to incorrect gas pres-
sure!
Incorrect gas pressures may damage the gas
valve and lead to further damage.
>
Only operate the unit at the permitted con-
nection pressure.
>
Inform your gas supply company if you
cannot rectify the cause of this fault.
>
Put the appliance out of operation.
>
Close the gas shut-off cock.
>
Take off the U-pipe pressure gauge.
>
Screw the plug screw of the connection pressure
measuring port back in.
>
Open the gas shut-off cock.
>
Check the measuring port for leaks.
2
6.1.3

Checking the thermal load

There are two ways to check the thermal load:
>
Reading the gas flow rate on the meter (volumetric
method)
>
Checking the burner pressure (burner pressure
method)
Volumetric method
Make sure that no other gases (such as liquid gas and
air mixtures) are supplied to meet peak consumption
during the test. You can obtain information from the
local gas supply company.
Make sure no other appliances are operated during the
test.
Installation manual atmoMAG mini 11-0/0 XI 838291_05
Permissible gas connection pressure
MPa (mbar)
0,0017 - 0,0025 (17 – 25)
0,002 - 0,0035 (20 – 35)
0,002 - 0,0035 (20 – 35)
0,0025 - 0,0045 (25 – 45)