Mains Voltage External Controls Connections - Benchmark RD 532 combi Installation And Servicing

Electrical connections
4.2 Mains Voltage external controls
connections
NOTE: Only double insulated controls not requiring an earth can be used
Ns Ls L
R
ST4
Rem ove Link
230 V Room Thermostat Connections
Ns Ls L
R
230 V room
thermostat and
Programmer
Connections
Motor
Fig. 29
Note: If an external timer is used then the domestic hot
water pre-heat facility can only be reduced in tempera-
ture (approx. 25°C) by using the 'ECO' button on the
fascia.
22
Ns Ls L
R
ST4
Motor
230 V Pr ogrammer Connections
ST4
External wiring
Switched Live
and connector
Live
block not supplied
Series
connection
to be made
safe
6 720 610 576 - 23.TD
6 720 611 451 GB (03.11)