Cordivari 5240000000000, User Manual, Page: 8 / 24

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Cod. 1910000001158 - nv03
This document is intended for the installer and end user. Therefore, after
system installation and start-up, make sure that it is delivered to the end user
or to the manager of the system.
Reference product codes:
5240000000027; 5240000000028; 5240000000029; 5240000000030;
5240000000047; 5240000000048; 5240000000049; 5240000000050
1. Intended use
Electric immersion heaters with control and safety thermostat are intended
to be used as an auxiliary heating source inside the boilers (preparatory to
hot water accumulation). The manufacturer disclaims any liability for damage
or injury due to misuse of the equipment or for installations which do comply
with these instructions, lack or inefficiency of grounding and tampering, poor
maintenance and lack of experience of use, or because of failure to comply
with the electrical safety regulations in force in the country of use of the item.
IMPORTANT! The choice of electric resistance element which is most
appropriate for the specific use is the responsibility of your designer or
installer.
2. Technical features
Electric heaters for integrated use on boilers compliant for use with drinking
water, supplied with
1. Resistance element in INCOLOY 800.
2. Gasket
3.
Threaded connection fitting G 1’’ ½ in AISI-304.
4. Plastic container with integrated control thermostat from 30°C to 75°C
and manual reset safety thermostat set at 98 ° C. The temperature
values shown are subject to tolerances in compliance with standards
EN60730-1, EN60730-2-9 and may deviate from the temperature
measured at the tap, even beyond these tolerances, due to the natural
thermodynamic phenomena of water systems, such as stratification,
convection currents, etc.
5. Thermostat setting knob.
6. Cover for safety thermostat reset access.
7. 4x1.5 black PVC cable, 2 m length.
Power: three phase 400V (± 10%) AC 50/60Hz
Power: see the value stamped on the 5% -10%
Insulation class: I
Degree of protection (against the penetration of water and foreign matter
according to IEC 60529): IP44 .
3. Installation
3.1 Warnings
• Electric heater installation must be performed in accordance with
instructions by a professional with the necessary qualifications in
compliance with current specifications in order to eliminate any risks.
• Remember to disconnect electrical power before installation.
• Check the integrity of the heater in all his components and equipments
(gasket and power cable). Do not tamper with any part of the electric
heater and avoid to place weight over it, also when packaged.
• Check that the power voltage to which the heater will be connected
complies with that stamped on the resistance element itself (± 10%) and
that the power supply circuit is in compliance with current legislation in
force.
• Make sure the line cables are dimensioned according to the power
• Make sure the installation has been correctly grounded
• Do not bend resistance element and ensure the space available inside
and outside the tank is compatible with dimensions and space required for
mounting the heater.
• The heater should always be assembled so that the resistance element is
in a horizontal position and always completely immersed, preferably in the
lower part of the tank in order to achieve a better heat exchange.
• The heater must never be operated if the resistance element is not
completely immersed.
• Avoid installation in areas of the boiler where sedimentation can occur.
• Connect the heater to the electrical grid by interposing a break device with
the appropriate characteristics.
• The equipment power supply circuit must be protected by a differential
circuit breaker with high sensitivity (30 mA max).
• The electrical connection must respect the colours of each single
conductor:
yellow-green → earth
other colours → phases.
English
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CIRCUIT DIAGRAM