Heating, Air Conditioning & Ventilation

Heating, Air Conditioning & Ventilation

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They are always hooked in parallel in electrical control circuits. Figure 3-1 shows a typical wiring diagram for a solenoid valve used on a direct expansion refrigerating system. The transformer converts the 220 volt, line voltage currentanbsp;...

Title:Heating, Air Conditioning & Ventilation
Author:Hanns Wittjen
Publisher: - 1969


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