Installation guide

25
Preparing and starting the boiler
Check the water pressure on the boiler
pressure gauge. By opening the gas cock
gas is inlet into the boiler. Connect the
plug of the fl exible power cord into the
socket and press the mains button. The
heating and hot water are set to approx.
½ of their volume. In the fi rst additional
“mode” we select automatic setting of the
heating water temperature for running of
the pump, for subsequent actual operation
this is adjusted further as applicable. The
boiler ignites and heats the hot water.
After this heating the boiler heats in the
heating system.
During the running of the boiler check the
gas tightness of all connections of the
gas path in the boiler, e.g. using a foam-
forming solution. It is necessary to rectify
any determined leakages and repeat the
check.
At the end of preparing and starting the
boiler check and if necessary adjust the
output of the boiler with regard to the
heating system by setting the gas pressure
on the outlet of the gas armature and set
this according to the requirements of the
customer.
Setting gas pressure
Output is set using the regulating elements
on the combined gas armature (see
illustration of gas armature), pressure
is measured using the U-manometer
(against atmosphere).
Operating the boiler
Regulating gas armature
Fig. 9
2
1
C
∅ 8
A
B
D
1 – measurement point of gas pressure on infl ow to armature
2 – measurement point of gas pressure on outfl ow from armature
A – cover plug
B – setting (internal) screw of maximum
C – setting screw of minimum
D – electrical setting of minimum