OPTIONAL CONTROLS
TR05A140.B1107
55
7 OPTIONAL CONTROLS
7.1 External controls, programmers and room thermostats
All external controls used with this appliance MUST BE ZERO-VOLT SWITCHING ONLY!
If mains voltage, i.e. a switched live, is fed to the control terminals THE APPLIANCE WILL NOT
FUNCTION and could be SEVERELY DAMAGED!
7.1.1 Appliance connections
To fit a programmer, room thermostat or other external controls:
• Isolate the electricity, water and gas supplies to the appliance;
• Remove the front casing panel of the boiler (refer to 6.3 for guidance);
• Remove terminal block cover A of the control panel;
• Remove the link between the two terminals marked Ta on terminal block B;
• Connect the two wires from the programmer, room thermostat or controls to the terminals marked Ta;
• Replace terminal block cover A.
External Controls:
- Room thermostat
- Programmer
A
- S-Plan system
SeSeTaNL
B
Ta
Figure 52: Connection of external controls
To Next Page
Loading...