Checking The Air Supply Hose; Check Heating System Operating Pressure - Buderus Logano GB125/22 BE Installation And Service Instructions Manual

8.6

Checking the air supply hose

V Disconnect the corrugated hose [2] from the burner
intake silencer [3] by undoing the special hose clip [1]
and check for dirt.
V If dirty, clean the corrugated hose [2] with a vacuum
cleaner.
8.7

Check heating system operating pressure

In sealed systems, the operating pressure must be
15 - 30 psi (1 - 2.1 bar).
V Check system pressure.
V If the pressure gauge shows less than 15 psi, the oper-
ating pressure is too low. Add water to the system.
Caution: Risk of system damage due to fre-
quent topping up.
If you have to top up the heating water fre-
quently, the heating system may suffer dam-
age from corrosion or scaling, depending on
the water quality.
V Ensure that your heating system is bled
properly.
V Check the heating system for leaks and
proper operation of the expansion vessel.
Warning: Health risk from contaminated do-
mestic water.
V Observe all national standards and regula-
tions regarding prevention of domestic
water contamination (e.g. by water from
heating systems).
Logano GB125 BE US/CA - Technical specifications are subject to change without prior notice.
Heating system servicing
Fig. 45 Inspecting the corrugated hose
1 Special hose clip
2 Corrugated hose (air supply for combustion)
3 Intake silencer
Fig. 46 Pressure/temperature gauge for showing oper-
ating pressure and supply temperature
8
7 747 019 141-17.1RS
45