System Start-Up; Making The System Operational; Check And Correct The Operating Pressure; Checking The Operating Water Pressure - Buderus Logano G315 Operating Instructions Manual

3

System start-up

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:
▶ Operating water pressure of the system ( Chapter 3.2)
▶ Fuel is supplied and the main fuel shut-off valve is open
▶ 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.
NOTICE: Risk of system damage due to frequent filling
up.
▶ If you need to add water frequently, the heating
system may be damaged by corrosion and scale
buildup depending on the water quality.
▶ Bleed the heating system. If necessary, fill with
make-up water.
▶ Check the heating system for leaks and the correct
operation of the expansion vessel.
▶ Notify your heating contractor if you find the need to
fill your heating system frequently.
If the operating pressure in the system is too low, fill make-up water into
your system ( Chapter 2.3, page 4).
• 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.
Air pockets may form in the heating system from the fill
or make-up water releasing gases.
• 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.
6
3.2.1

Checking the operating water pressure

The operating water pressure must be at least 15 psi (1 bar).
▶ Read the current operating pressure and temperature ( °F ( °C)) on
the temperature/pressure gauge.
▶ If the operating pressure drops below 15 psi (1 bar), fill up the
heating water.
Fig. 3 Pressure/temperature gauge
3.2.2

Fill water and bleeding the system

Let your local heating contractor show you where the
boiler fill and drain valve for filling up and draining the
heating water is located on your heating system.
▶ Slowly fill the heating system via the on-site fill valve. During filling,
observe the display (pressure gauge).
▶ Once the desired operating pressure is reached, stop the procedure.
▶ Bleed the heating system via the purge valves.
▶ Add fill water again if the operating pressure drops as a result of
bleeding the system.
3.3

Starting up the control panel and the burner

Start your boiler via the control panel. By starting the control panel, you
also automatically enable the burner. The burner is then fired by the
control panel. For further details, see the operating instructions of the
relevant control panel or burner.
Using a Logamatic 4000
▶ Switch the boiler water thermostat ( Fig. 4, [1]) to "AUT."
▶ Set the ON/OFF switch ( Fig. 4, [2]) to "I" (ON).
1
2
Fig. 4 Control panel Logamatic 4000
[1] Boiler water thermostat
[2] ON/OFF switch
7 747 019 141-17.1RS
6 720 642 624-03.1O
G315 – 6 720 817 940 (2017/02)