Electrical Connection - Hamworthy VARMAX 120 Installation, Commissioning And Servicing Instructions

WARNING:

4.14. Electrical connection

DANGER:
WARNING:
WARNING:
14.09.2020
The value read at the gas valve input must be between the limits indicated in
the table in chapter 2.5, page 10 for the type of gas used.
The boiler's gas line connection must not be subject to any mechanical
stress (risk of loss of gas tightness of the gas valve).
Check that the natural gas supply corresponds to the nominal boiler
pressure stated on the identification plate.
Ensure that the general electrical power supply has been cut off
before starting any work.
Observe the phase polarity - neutral for electrical connections.
It is mandatory to connect this boiler correctly to earth and to comply with
applicable standards for low voltage electrical installations in the United Kingdom.
Provide a two pole circuit breaker upstream of the boiler (distance
between contacts: 3.5 mm minimum).
It is strongly recommended to fit the electrical installation with a
30 mA differential protection.
Refer to the instructions of installation and use of the NAVISTEM B3000
boiler command table for information concerning electrical connections to
the control panel (characteristics of the electrical power supply, cable section
and connection to terminal blocks).
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