Installation and servicing instructions for wall-mounted condensing gas boiler Buderus 600 - 11R/19R/24R • 02/2006
41
Subject to modifications resulting from technical improvements!
Buderus • http://www.buderus-domestic.co.uk
Maintenance
4
4
Maintenance
4.1
Clean the heat exchanger, burner and
condensate trap
4.1.1 Cleaning the heat exchanger without
dismantling
z
Disconnect the system from the power supply.
z
Close the gas service valve.
z
Loosen the fixing screws, remove casing and ventila-
tion cover.
z
Release plug-in connection of fan power lead
(fig. 37, item 1), burner-control unit fan control lead
(fig. 37, item 2) and gas-burner assembly (fig. 37,
item 3).
z
Loosen union nut on gas valve assembly (fig. 37,
item 4).
z
Push safety plate out of way.
z
Turn air silencer tube and pull off from below.
z
Swivel the gas-air unit forward (fig. 38, item 1).
z
Pull the gas-air unit up and out of bayonet connector
(fig. 38, item 2) and remove via front of unit.
Fig. 37 Loosen the union nut and remove the cable
1
2
3
4
NOTE
The described cleaning of the burner and
heat exchanger is only necessary when
the boiler is heavily soiled. Otherwise it is
sufficient to clean the burner and heat
exchanger with a soft brush or
compressed air without disassembling
them.
Fig. 38 Remove the gas-air unit
1
2
