External Control Connections - Buderus 600 - 11R Installation And Servicing Instructions

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)"
WARNING!
This appliance must be earthed.
WARNING!
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).
Remove the cover of the RTH converter
(fig. 23, item 1).
Feed the 230V switch live and neutral (from external
controls) through the cable gland.
Identify the 230V terminal block by the shaded area
and 230V label.
Connect the switch live to terminal "1" and a neutral
to terminal "2" (fig. 23, item 2).
Replace covers.
NOTE
Terminal 3 (fig. 23, item 2) is not used.
1.9.2 Volt free external control device connection
NOTE
If using the boiler for central heating only.
Volt free controls may also be used.
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).
Remove the cover of the RTH converter
(fig. 23, item 1).
Lead the control device wire through the cable lead.
Fix the wire to terminal "1" and "2" of the volt free
connection (fig. 23, item 3).
Subject to modifications resulting from technical improvements!
Installation and servicing instructions for wall-mounted condensing gas boiler Buderus 600 - 11R/19R/24R • 02/2006
2
Fig. 23 Connecting the control device
Buderus • http://www.buderus-domestic.co.uk
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