Safety Measures - Hitachi DHWT-200S-3.0H2E Manual De Instrucciones

ELECTRICAL WIRING
9.5 ELECTRIC HEATER
The electric heater is made of Incoloy alloy 825 and complies with the European Low Voltage Directive 2006/95/EC.
It comprises a flange that holds three U-Shaped heating elements for 3.0kw power resistances.
9.6 ELECTRICAL INSTALLATION
9.6.1 Replacing the thermostat/element
Turn off power supply and remove electric central cover. Turn off
water supply and drain unit. Unscrew wires on thermostat and
element.
If only the thermostat is being replaced the wire on the element
can be left on. The thermostat is removed by pulling it straight
out from its sockets on the element.
The element can then be removed/replaced by using an
element tool. Ensure the o-ring seal on the element is in place
and undamaged before fitting the element.
Fill unit completely with water and make sure the element is not
leaking. Fit wire to element. Install thermostat by pressing firmly.
Fit the electric wires to thermostat.

9.7 SAFETY MEASURES

• Before any intervention, totally disconnect the DHWT from
the main power supply. All the connections circuits must be
disconnected.
• Installation, configuration, start up and maintenance of
heating elements must be carried out by an authorised
electrical fitter. All standards and regulations must be
observed.
• The user is responsible of ensuring that the essential
requirements of the European Low Voltage Directive are
respected.
• Electric heating elements generates high temperatures.
Precautions should be taken to protect goods and persons
from accidental burns during the operation and after the
equipment has been disconnected or installed.
10 PMML0347B rev.1 - 06/2016
Tighten all wire connections thoroughly. Re-tighten after 3
months.
The electric central cover must be re-fitted and the unit must be
filled with water before power is turned on.
Thermostat Element
• Note minimum cable section:
• Resistances of 3.0kw recommended cable: H05SJ-K
accordance with UNE 21027, and will have at least 2.5mm²
section.
• The tanks must be with a DHWT temperature control
thermostat and an all-pole limiter thermostat (the setting of
these two components must be compatible with the design
parameters of storage tanks).
• We recommend installing appropriate safety devices
(temperature safety device, safety level for heating liquids
by natural convection, flow safety device for liquids in
circulation, etc.)
Sensor sheath