Wet Cleaning (Chemical Cleaning); Checking Heating System Operating Pressure - Buderus Logano G115 WS US/CA Installation And Service Instructions Manual

8.3.2

Wet cleaning (chemical cleaning)

For wet cleaning use a cleaning agent appropriate for the
degree of soiling (soot or scale). Proceed with the wet
cleaning in the same order as described for cleaning with
brushes ( Chapter 8.3.1, page 36).
Follow the instructions for the cleaning prod-
uct. You may need to proceed differently
from the method described here in some cir-
cumstances.
V Cover the control panel with plastic to prevent spray
from entering the control panel.
V Spray cleaning agent evenly into the heat exchanger
heater passages.
V Close burner door and start up the heating system.
V Heat the boiler to a temperature of at least 160 °F.
V Shut down the heating system.
V Brush out the heat exchanger heater.
8.4

Checking heating system operating pressure

The system pressure for closed systems must be
15 – 30 psi (1.0 – 2.1 bar).
V Check system pressure.
V If the pressure gauge shows less than 15 psi, the pres-
sure is too low. Top up the system with water.
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.
Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.
Heating system servicing
Fig. 40 Pressure/temperature gauge for showing oper-
ating pressure and feed temperature
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7 747 019 141-17.1RS
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