Mains Voltage External Controls Connections - Benchmark ZWB 7-29 CC1 Installation And Servicing

4.2 Mains Voltage external controls
connections
NOTE: Only double insulated controls not requiring an earth can be used
Ns Ls L
R
ST8
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230 V R oom Thermostat Connections
230 V r oom thermos t at and Ns Ls L
Programmer Connections
Fig. 29
Note: If an external timer is used then the domestic hot
water pre-heat facility can only be isolated by actuating
the ECO-button.
6 720 610 599 GB (03.02)
Ns Ls L
R
ST8
Motor
230 V Pr ogrammer Connections
R
ST8
Series
connection
to be made
safe
Motor
6 720 610 576 - 22.1O
Electrical connections
21