Installation Instructions

Heating system servicing

Logano G115 WS US/CA - Technical specifications are subject to change without prior notice.

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 (Æ Chapter 8.3.1, page 36).

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.

Fig. 39 Pressure/temperature gauge for showing oper-

ating pressure and feed temperature

Follow the instructions for the cleaning prod-

uct. You may need to proceed differently

from the method described here in some cir-

cumstances.

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.

7 747 019 141-17.1RS