Installation and servicing instructions for wall-mounted condensing gas boiler Buderus 600 - 11R/19R/24R • 02/2006
29
Subject to modifications resulting from technical improvements!
Buderus • http://www.buderus-domestic.co.uk
Installation
1
1.9
External control connections
The wall-mounted condensing gas boiler can be fitted
with the following control devices:
– A room-temperature control device at 230V
connected to the RTH converter (see fig. 23, item 2)
– ON/OFF temperature controller, volt free (see fig. 23,
item 3).
1.9.1 External 230V controls (see also Y-plan and
S-plan on page 8 and 9)"
z
Connect the black pre-wired lead to a permanent live
supply (from the same fused isolator as all other
controls on the heating system), L N E (fig. 22).
z
Remove the cover of the RTH converter
(fig. 23, item 1).
z
Feed the 230V switch live and neutral (from external
controls) through the cable gland.
z
Identify the 230V terminal block by the shaded area
and 230V label.
z
Connect the switch live to terminal "1" and a neutral
to terminal "2" (fig. 23, item 2).
z
Replace covers.
1.9.2 Volt free external control device connection
z
Connect the black pre-wired lead to a permanent live
supply (from the same fused isolator as all other
controls on the heating system), L N E (fig. 22).
z
Remove the cover of the RTH converter
(fig. 23, item 1).
z
Lead the control device wire through the cable lead.
z
Fix the wire to terminal "1" and "2"
of the volt free
connection (fig. 23, item 3).
Fig. 23 Connecting the control device
2
3
1
WARNING!
WARNING!
This appliance must be earthed.
NOTE
Terminal 3 (fig. 23, item 2) is not used.
NOTE
If using the boiler for central heating only.
Volt free controls may also be used.
