Operating Conditions
• The appliance is designed for use indoors and at
ambient temperatures between -25° C and +30° C, in
unrestricted, and dust-free and chemical-free air.
• When designing the ventilation system, bear in mind
that air temperature at the outlet must be below 50°C
and that the air speed through the heating elements
must be at least 2 m/s.
• Electrical connections box protection rating: IP40.
• When the “Pre-Heating Box” unit is turned on and for
how long is automatically determined by the heat
recovery unit.
• Should the heat exchanger carrying fresh air into a
room stop for any reason, the power supply to the
heater cuts off automatically
Notes for Installation
• The heater must be installed along the intake duct
that carries cool air from outside the heat exchanger
and at least 50 cm from the appliance.
• The heater must not be installed horizontally with the
wiring box facing down; (fig.1).
• Should the heater be installed at the beginning of a
duct, the end of the pipe will need to be protected
with a suitable grille
.
• The air heater must be securely fixed to the duct so
that it cannot fall.
• The air heater must be insulated with non-
inflammable material as required by the safety
standards of the country where it is installed.
• Connect the electrical heating elements to a single
phase power supply.
• The cover of the electrical connections box must be
easily accessible in order to reset the safety
thermostat.
• The direction of air flow is not important.
• The air heater must be installed so that it functions
in conjunction with a fan and is only switched on
when the fan is functioning.
Connection with heat
exchanger
9
ENGLISH
1
≥ 500 mm
2
2
≥ 500 mm
33
Summary of Contents for ELECTRIC HEATER 750
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