Fairford Synergy SGY-401, Быстрый старт

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5
Enclosure Ventilation
When fitting synergy
™
into a cabinet, ventilation must be provided if the heat output of the
unit is greater than the cabinet will dissipate. Use the following formula to determine the fan
requirement. An allowance has been incorporated into the formula so that the figure for Q is
the air delivery in the fan suppliers data.
Without external bypass, the maximum power dissipation occurs when energy saving.
Heat dissipated can be approximated with the formula:-
Watts (synergy
™
) = synergy
™
current rating x 3
With external bypass installed, the formula becomes:-
Watts (synergy
™
) = 1/2 x synergy
™
current rating x 3
Q = volume of air (cubic metres per hour-m
3
/h)
Wt = Heat produced by the unit and all other heat sources within the enclosure (Watts)
Tmax = Maximum permissible temperature within the enclosure
(40°C for a fully rated synergy
™
)
Tamb = Temperature of the air entering the enclosure (°C)
If you prefer to work in CFM, substitute °F for °C. Q is now in CFM
Q = 4xWt
(T
max
- T
amb
)
Environment - installation