Hamworthy Milborne 500 Series Design Installation, Commissioning And Operating Instructions page 34

Wiring connections
Connect the wires from the boiler Master controller
to terminal 1 & 2 of the programmable room
thermostat.
For high temperature heating circuit, terminal 9 at
the Master control provides the live and should be
wired to terminal 1 at the thermostat. Terminal 10 at
For programming details please refer to the instructions provided with the room thermostat. Alternatively contact
Hamworthy Heating Ltd for a copy of instruction manual.
HAMWORTHY HEATING LTD
the Master control receives the switch live return
and should be wired to terminal 2 at the thermostat.
For low temperature heating circuit, terminal 11 at
the Master control provides the live and should be
wired to terminal 1 at the thermostat. Terminal 12 at
the Master control receives the switch live return
and should be wired to terminal 2 at the thermostat.
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MILBORNE 500 SERIES 500001130/A