System Cleaning; Hydraulic Connections - ICI Caldaie REX F 7 Instructions For Installation, Use And Maintenance Manual

ATTENTION
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– Consider the spaces necessary to access the adjustment and safety devices and to perform maintenance.
– If the burner is fed with gas of specific weight greater than that of the air, the electrical parts must be positioned at least
500 mm from the ground.

SYSTEM CLEANING

Before connecting the boiler to the system, it is RECOMMENDED to wash the pipes thoroughly in order to remove any residues
which may compromise the correct operation of the boiler.

HYDRAULIC CONNECTIONS

STARTING HYDRAULIC CIRCUIT
The hydraulic circuit must be built by an authorised company or by qualified personnel, in compliance with the Technical Standards
and the Law in force.
The components shall be charged to the installer that, at the end of the works, must issue a declaration of conformity.
IMPORTANT
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ICI CALDAIE S.p.A.
components or in the construction of the plant.
IMPORTANT
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– Make sure that the hydraulic pressure measured downstream of the pressure regulator on the supply line does not
exceed the operating pressure indicated on the boiler nameplate.
– Make sure that the drains of the safety valves of the boiler and the heater, if any, are connected to a drain funnel, so that
the valves do not flood the room in case of intervention.
– Make sure that the water and heating system pipes are not used as earthing point of the electrical system.
– Once the heating system has been filled, it is recommended to close the supply tap and keep it closed so that any
system losses can be signalled by an hydraulic pressure drop detected on the system manometer.
– For reasons of technical expertise, the system components must be chosen and installed by the installer, that must
operate in accordance with good practice regulations and Laws in force.
WATER CIRCULATION
The temperature difference between flow and return must not exceed 30°C in order to avoid thermal shocks to the boiler. The
return temperature from the system must be higher than 50°C (with exclusive methane gas or LPG operation) in order to protect
the boiler from corrosion due to acid flue gas condensate.
The warranty does not cover any damage caused by the condensate.
It is useful to mitigate the return temperature by installing a mixing valve and/or a recirculation pump.
Installation
Cooke Industries - Phone: +64 9 579 2185 Email: sales@cookeindustries.co.nz Web: www.cookeindustries.co.nz
is not liable for any harm to people, animals or property damage caused by errors in the choice of
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