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4.2 systeM BoIler - Installer guIdelInes
High temperture limit
thermostat reset pin inside.
Screw off cover.
Temperture
Control Dial.
Max. 80˚C.
Min. 60 ˚C
Pump over run
thermostat 87
˚C
Pressure
Switch
87˚C
80˚C
110˚C
Power to Burner
(5 pin plug)
L1 = Switch Live
L3 = Permanent Live
• Please note that a permanent live connection is required to enable the
pump over run and frost protection. It is also required to operate the
post-purge function on the burner, when applicable.
• If a permanent live supply is not provided, the burner will not operate.
Main
s
Burner
Limi
t
Lockou
t
wIrIng
electrical supply
the boiler and controls require a 230v 50Hz mains electric supply protected with a 5a fuse.
this appliance must be earthed.
a qualified electrician must carry out all electric wiring in accordance with current eTCI / IeT Regulations and any local regulations
which may apply.
The boiler must have a permanent power supply to enable overrun and frost protection. The hot water and central heating
should be timed separately.
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