
PREFACE
Proteus Plus 23,3 kW room sealed fan assisted gas combination boilers have been designed for
providing efficient, safe and comfortable central heating (CH) and domestic hot water (DHW). The
boilers are supplied for use with either natural gas or LPG.
This manual contains installation and user’s operating instructions. The detailed information about
technical data, selection of the boiler location, fitting the connections (water systems, gas supply, flue
connection and electricity supply), gas type conversion, maintenance and fault & failure finding are
placed in your manual. Please read the instructions carefully for operating the boiler a long time
period and to maximize benefit from the boiler specifications.
Please keep all your documents safe.
GUARANTEE & SERVICE
The appliance has guarantee period against faulty workmanship or material in condition that the
instructions and precautions in this manual must be obeyed. The service operations and general
maintenance must be carried out only by qualified person.
The warranty certificate must be registered by Service in the installation day.
Your appliance need not any repairs if operated according to this manual. For assistance
additional information, consult qualified person, installer or gas supplier.
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SYMBOLS’ DEFINITIONS
The symbols have been placed on particular points to make some instructions more noticeable. The
symbols’ definitions are described as follows:
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CAUTION: Property damage and/or non-severe injury can happen.
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WARNING: Severe injury or death can happen.
: The important explanations to be considered by users.
: The situations that can only be interfered by qualified person.
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