Phason Three Ventilation Stage Control, User Manual

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TVS user manual Phason
General warnings
BE SURE POWER IS OFF BEFORE DOING ANY WIRING.
The TVS should be installed by a qualified electrician.
Install all equipment according to the applicable local electrical codes.
Most variable speed fan motors draw more current at fractional speeds than at full speed. Fan motor
specifications show current draw at full speed. The increase in current draw may be as much as two times
the rated current. Current over 7.5 Amps will cause overheating and eventual failure of the TVS. Please
check current requirements for the fan motor by either measuring current draw at all speeds from idle to
full speed or consult the dealer for information on the particular fan.
CAUTION: Stages 1 and 2 are for control of shaded pole, permanent split capacitor or universal
motors only.
ATTENTION: Destine uniquement a la commande de moteurs universels, a bague de dephasage ou a
condensateur permanent.
DO NOT mount power contactors inside the TVS enclosure. Power contactors create electrical noise,
which may cause the TVS to work improperly.
Warning: Phason controls are designed and manufactured to provide reliable performance, but they are
not guaranteed to be 100% free of defects. Even reliable products may experience occasional failures, and
this possibility should be recognized by the user. If Phason products are used in a life support ventilation
system where failure could result in loss or injury, the user should provide adequate back-up ventilation,
supplementary natural ventilation or an independent failure alarm system. The user's lack of such
precautions acknowledges their willingness to accept the risk of such loss or injury.
Electrical noise varies according to the type of equipment installed, the wiring layout and many other
factors. It's effects are not apparent in most installations but over time it can cause degradation of
electronic circuits, relays and power contactors. These transients can cause unreliable operation of your
equipment if they are not properly controlled. A false 'A PF' alarm is due to electrical noise caused by
high voltage transients in certain installations. Therefore, snubbing filters must be installed on all
inductive loads for installations of this type. The filters must be connected in parallel with the load so the
snubbing filter may absorb
28 2009-09-15