Installation Of Switch For Snow Measure (Fan Manual Operation) - Hitachi RCUE40AG2 Service Manual

Control System

Installation of switch for snow
measureHeat storage operation
by external order:

ATTENTION:
pag. 68

4.12. Installation of switch for snow measure (Fan manual operation)

If a switch for snow measure is installed, it is connected to terminal #31 and #32 in
customer wiring terminals. When the switch is ON, fan is operated during unit stop or
Thermo OFF.
However, the fan is not operated in the following cases:
When local is set
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During alarm occurrence
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When the switch has been ON before power ON (including power failure)
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Fan manual operation is stopped by the stop switch of unit body
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It is possible to insert a automatic contactor like a snow relay in this switch part.
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This switch can be used only at remote control. Pay attention to it at Unit check.
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Once the fan is started-up by this switch, fan continues running at least for
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10 minutes if it is not stopped by the switch during this period. (In case of
emergency, stop the fan by the stop switch of unit)
This switch is locally purchased.
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SMGB0003 rev.0-01/2007
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