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N = Neutral
L = Live
S = Boiler switch output
R = Boiler switch return
Switch live from
programmer or mains
feed from wiring
centre (fused 3 Amp)
2 Port spring return
motorised valve with
auxiliary end switch
Typical combi boiler system
with built in timer
This diagram shows a typical receiver and
combination boiler installation, where the
external boiler control is connected via switching
terminals (a link may have to be removed on the
boiler switching control terminals). Mains
supplies to both the receiver and the boiler are
omitted for clarity. Please consult the boiler
manufacturers installation handbook before
commencing any installation work.
Zone/Heating control basic
layout
This diagram shows a receiver used in a
conventional fully pumped system using a 2 port
spring return zone valve with auxiliary switch to
control the pump and boiler. Please note: hot water
control will need to be controlled by the use of a
programmer or time switch.
To Pump
and Boiler
Mains supplies to both the receiver
and the boiler are omitted for
clarity. Please consult the boiler
manufacturers.
installation handbook
before commencing any
installation work.
7
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