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Version 1 – GBR (25/10/2022)
D-502-0287
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The supply cabling for the heater must be a separate supply including the switched phase controlled
by the unit, under no circumstances must the heater be powered from the unit.
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Sample wiring diagram:
Fig. 37
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Install the heater - reheater according to the heater manufacturer's instructions e.g.: flow direction,
distance from the unit, heater position, distance of temperature sensor from the heater etc...
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If the heater manufacturer requires a minimum line velocity for proper heater operation, this must be
addressed by a separate component (e.g.: differential pressure sensor). Under no circumstances shall
the unit be used for this purpose.
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In no event shall the manufacturer of the unit be liable for improper installation, malfunction or
damage caused by the heater.