Safety Measures - Hitachi DHWT Serie Manuel D'installation Et De Fonctionnement

16 1 Electric heater

16.2 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 hea-
ting 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 require-
ments of the European Low Voltage Directive are respected.
• Electric heating elements generates high temperatures. Pre-
cautions should be taken to protect goods and persons from
accidental burns during the operation and after the equipment
has been disconnected or installed.
DHWT(200/300)S-2.5H1E
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DHWT(200/300)E-2.5H1E
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21 PMML0198A-rev.1 - 04/2011
All manuals and user guides at all-guides.com
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To earth terminal of the control panel
To the top flange
To terminal 5 and 6 of the control panel
To earth terminal of the control panel
To the top flange
To terminal 5 and 6 of the control panel
Heater connection
Note minimum cable section:
Resistances of 2.5kw recommended cable: H05Sj-K accor-
dance with UNE 21027, and will have at least 2.5mm² section.
The tanks must be with a DHWT temperature control thermos-
tat and an all-pole limiter thermostat (the setting of these two
components must be compatible with the design parameters
of storage tanks). The sensors must always be located at a
higher level than the electric heater element.
We recommend installing appropriate safety devices (tempe-
rature safety device, safety level for heating liquids by natural
convection, flow safety device for liquids in circulation, etc.)
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Flange
Heater
Seal
Washers
Screws
Studs
Nuts
Metal protective casing
Screws M6
Panel
Screws M4
Wires
Earth Wire
Flange
Heater
Seal
Nuts
Nylon bushing
Nylon washers
Metalic washers
Metal protective casing
Screws M6
Panel
Screws M4
Wires
Earth Wire