21
Turn the rotary selector "
tr
" anti-
clockwise as far as it will go.
0
3.
Release the screw inside test nipple
A
, but do not remove, then connect
the pressure gauge.
0
4.
Open the gas shut-off valve. Start
the boiler.
0
5.
1
2
3
4
5
6
Turn rotary selector "
tw
" clockwise
as far as it will go (leave at that posi-
tion briefly), then turn it back.
"Serv"
appears.
0
6.
Turn potentiometer
B
anti-clock-
wise with a screwdriver until the noz-
zle pressure at the pressure gauge
corresponds to the required heating
output in accordance with the nozzle
pressure table on page 19.
0
7.
Close and flip up the control unit.
0
8.
Switch OFF the ON/OFF switch on
the control unit, close the gas shut-
off valve, remove the pressure
gauge and close test nipple
A
.
0
9.
Turn the rotary selectors "
tw
" and
"
tr
" back to their original posi-
tions.
10.
Record the adjustment of the max.
heating output in the "Reports"
table.
Commissioning, inspection, maintenance
Further details regarding the individual steps
(cont.)
5441 514 UAE
Service