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System start-up
Logano G515 - Subject to technical modifications
8
3 System start-up
This chapter explains how you prepare the system for
operation and how to commission the control panel and
the burner.
3.1 Making the system operational
You should check the following to prepare the system for
operation:
B Operating water pressure of the system
(Æ Chapter 3.2)
B Fuel is supplied and the main fuel shut-off valve is open
B Heating system emergency shutoff switch set to ON
Ask your heating contractor to show you where the fill
valve for your heating system (boiler return) is located.
3.2 Check and correct the operating
pressure
Your heating system must contain sufficient water to
ensure the functionality of your system.
If the operating pressure in the system is too low, fill make-
up water into your system (Æ Chapter 2.3, page 6).
Recently added fill or make-up water loses much of its
volume in the first few days because it releases gases.
With newly filled heating systems, initially check the
operating pressure daily and then in ever increasing
intervals.
Once the system is losing minimal volume, check the
operating pressure of the heating water once a month.
All factory default settings will have already been made by
the heating contractor when the system was first
commissioned.
3.2.1 Checking the operating water pressure
The operating pressure must be at least 15 psi (1 bar).
B Read the current operating pressure and temperature
( °C ( °F)) on the temperature/pressure gauge.
B If the operating pressure drops below 15 psi (1 bar), fill
up the heating water.
Fig. 3 Pressure/temperature gauge
3.2.2 Filling with heating water and bleeding the
system
B Slowly fill the heating system via the on-site fill valve.
During filling, observe the display (pressure gauge).
B Once the desired operating pressure is reached, stop
the procedure.
B Bleed the heating system via the purge valves.
B Add fill water again if the operating pressure drops as
a result of bleeding the system.
NOTICE: Risk of system damage due to
frequent refilling.
B If you need to add water frequently, the
heating system may be damaged by
corrosion and scale buildup depending on
the water quality.
B Bleed the heating system. If necessary, fill
with make-up water.
B Check the heating system for leaks and
the correct operation of the expansion
vessel.
B Notify your heating contractor if you find
the need to refill your heating system
frequently.
Air pockets may form in the heating system
from the fill or make-up water releasing
gases.
Let your local heating contractor show you
where the boiler fill and drain valve for filling
and draining the heating water is located on
your heating system.
7 747 019 141-17.1RS
8


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