Preparing The Boiler For Operation - Buderus 500-24S Installation And Maintenance Instructions Manual

2
Commissioning
2.1

Preparing the boiler for operation

Caution:
DO NOT operate the condensing gas boiler
if large amounts of dust are present, e.g. due
to building work in and around the place of
installation.
2.1.1 Fill the heating system
Caution:
The wall-mounted condensing gas combi
boiler must not be activated at this stage.
NOTE
Please read the notes on heating system wa-
ter and domestic hot water on page 3 care-
fully.
V Loosen the automated air vent one turn (
V If necessary open the CH flow and CH return servicing
valves ( fig. 44, item 1).
V Connect filling loop (
V Open both stop valves (
V Fill the system to a pressure of approx. 1.5 bar
( fig. 44, item 2).
V Close both stop valves.
V Vent the air from all radiators starting with the lowest
radiator and working up to the highest point.
V Check the pressure after venting. If the pressure has
dropped under 1.0 bar then top up the system as
described previously.
V Disconnect the filling loop and cap off.
33
fig. 43).
fig. 45).
fig. 45).
Buderus 500-24S - Subject to modifications resulting from technical improvements
1
Fig. 43 Automatic air vent
2
1
3
Fig. 44 Servicing shut off valves
1 shut off valve
2 manometer
3 CH flow
4 gas
5 CH return
2
3
1
Fig. 45 Connecting filling loop
1 external MCW supply
2 stop valve
3 double check valve
4 filling loop
5 CH return
7215 3100-43.1TD
1
4 5
7215 3000-11.1TD
2
4
5
7215 3000-12.1TD