Operating instructions

6. Check the supply (flow) pressure.

Set values:

Natural gas 20 mbar.

LPG 50 mbar.

Note

Use suitable test equipment with a

resolution of at least 0.1 mbar to

measure the supply pressure.

7. Record the actual value in the ser-

vice report.

Take the action shown in the follow-

ing table.

8. Shut down the boiler, close the gas

shut-off valve, remove the pressure

gauge and close test nipple A with

the screw.

Danger

Gas escaping from the test

nipple leads to a risk of

explosions.

Check for tightness.

Open the gas shut-off valve, start

the boiler and check for tightness at

test nipple A.

Supply (flow)

pressure for nat-

ural gas

Supply (flow)

pressure for

LPG

Measures

below 17.4 mbar below 42.5 mbar Do not start the boiler. Notify your

mains gas or LPG supplier.

17.4 to 25 mbar 42.5 to 57.5 mbar Start the boiler.

in excess of

25 mbar

in excess of

57.5 mbar

Install a separate gas pressure gover-

nor upstream of the system and regu-

late the inlet pressure to 20 mbar for

natural gas or 50 mbar for LPG. Notify

your mains gas or LPG supplier.

Further details regarding the individual steps (cont.)

Commissioning, inspection, maintenance

5692 672 GB