G215/4 Owners Manual

System Operation 3
7
We reserve the right to make any changes due to technical modifications!
Users Manual Logano G215 US • Issue 2012/10
Buderus Heiztechnik GmbH • http://www.heiztechnik.buderus.de
3.3 Emergency operation
Proceed in the following manner in an emergency
situation, such as a fire:
z Shut off fuel supply at the main shut off valve.
z Shut off the heating system by means of the main
service switch.
3.4 Testing system pressure: adding make-up water and venting the system
3.4.1 When to test system pressure?
Newly added make-up water tends to reduce its volume
within the first few days due to elimination of entrained
air. This may lead to air build-up and possible system
noise.
z Check newly started systems daily for system
pressure and bleed radiators if necessary.
z Check system pressure on a monthly basis and add
make-up water automatically and possibly bleed the
radiators.
3.4.2 Testing system pressure
The system operating pressure must be at least 12 to
15 psi (1 bar). The specific recommended
z The specific recommended test pressure can be
found on Îpage 2. of this manual.
z Read off the pressure (psi) and temperature (°F) at
the P & T guage located at the supply side of the
boiler.
z When the system pressure drops below 12 to 15 psi,
add make-up water to the system.
3.4.3 Adding Make-up Water and Venting of the
system
Have your heating contractor or installer indicate to you
the location of the automatic feed valve and the
automatic air elimininator.
Fig. 4 Pressure/temperature gauge (located at the rear of
the boiler)