4 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.
Mains
Burner
Limit
Lockout
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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