Operating instructions

Yes

Gas combination

valve opens

Fault F4 Check the gas

combination valve

(control voltage

230 V); check the

gassupplypres-

sure

Yes

Ionisation cur-

rent builds

(higher tha n

2µA)

Symbol A

Fault F4 Check ionisatio n

current, check

electrode adjust-

ment and gas

pipe for airlocks.

Yes

Burner starts No Stops below set

boiler water tem-

perature and re-

starts immedi-

ately

Check flue gas

system sound-

ness (flue gas re-

circulation) ,

check gas flow

pressure

For further details regarding faults, see page 69.

Checking the static and supply pressure

Danger

CO build-up as a result of incorrect burner setting can have serious

health implications.

Carry out a CO test prior to, and after, work on gas equipment.

Operation with LPG (only 26 kW)

Flush the LPG tank twi ce during commissionin g/replacement. Tho roughly vent

the tank and gas lin es after flushin g.

Further details regarding the individual steps (cont.)

Initial start-up, inspection, maintenance

5692 619 GB