Installation Instructions

9. Open the gas shut-off valve and start

the appliance.

Danger

Gas escaping from the test

nipple leads to a risk of explo-

sion.

Check gas tightness at test

nipple

Note

The maximum pressure drop

between the gas shut-off valve and

test nipple

at the gas train is

0.5 mbar.

Supply pressure (flow pressure) Action

for natural gas for LPG

below 17.4 mbar below 25 mbar Do not start the boiler. Notify your gas

supply utility or LPG supplier.

17.4 to 25 mbar 25 to 47 mbar Start the boiler.

above 25 mbar above 47 mbar Install a separate gas pressure governor

upstream of the system and regulate the

pre-charge pressure to 20 mbar for natu-

ral gas or 37 mbar for LPG. Notify your

gas supply utility or LPG supplier.

Matching the burner output to the flue system

To match the burner output to the sys-

tem's flue pipe length, a correction factor

can be set.

1. Turn ON/OFF switch ON.

2. Turn both rotary selectors "tw" and

" simultaneously into their

respective central positions.

"SERV" appears on the display.

3. Refer to the following table for the

correction factor required for the con-

nected flue system.

Commissioning, inspection, maintenance

Further details regarding the individual steps

(cont.)

5609 059 GB

Service