Cordivari 5240000000034, User Manual

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Cod. 1910000001159 - nv02
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.
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, according to
D.M. 174/04 e D.L. n°31, supplied with:
• stainless steel heating elements
• IP 44 protection class
• Control thermostat (30+/-8/70+/-4°C) and manual reset safety
thermostat (90 +/- 5 °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.
• Setting knob
•
PVC power cable
L
Wiring diagram
L
Art. nr.
Tension
[V]
Output
[kW]
Width L
[mm]
R fitting
[Gas M]
5240000000034
5240000000051
230 V
Single-
phase
50/60Hz
1,5
320 1"1/2
5240000000035
5240000000052
2
5240000000036
5240000000053
3
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.
3.2 Installation procedure
• Position the gasket.
• Screw in the heater in the boiler connection indicated by the
manufacturer. Use a reduction if the connection available is of a larger
diameter (use adapter in cast iron or stainless steel, avoid components
in brass or copper or any other material with high conductivity power).
Avoid the connection to be more than 100mm.
• Tighten the heater with a suitable wrench, applying a tightening torque
no greater than 10kg for the tightening , do not apply torsion to the
external case of the heater.
• Proceed to fill the boiler in such a way as to check the hydraulic seal
of the connection.
• Proceed with electrical connection following the warnings above.
• Adjust the thermostat to the desired temperature.
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User manual