
PREVAC Stationary System
Tried-and-true technology in use for 30 years and installed on 30,000+ low pressure chillers around the world.

PREVAC Stationary System
The PREVAC System enhances the operation of low-pressure chillers using refrigerants R-1233zd(E), R-123, R-514a and R-11. PREVAC prevents air & moisture infiltration in idle chillers, eliminates surging on start-ups, and prevents acid damage and refrigerant release. It also eliminates electrical code violations during servicing (NFPA 70E, OSHA 1910.132), by eliminating the need for temporary high voltage and temporary water hose connections. The PREVAC system provides 1/100 of 0.0 PSI control for minor repairs and leak checking. High pressure alarm sounds before the bursting disc is activated. This system complies with ASHRAE 147 and ASHRAE 4.4.2 & 4.4.4, and enables safe and efficient chiller servicing.
Extend the lifespan and improve the operation of your low pressure centrifugal chiller with PREVAC.
Useful on:
York YZ
Carrier AquaEdge
Trane CenTraVac Series E
Mitsubishi ETI-Z
And every other low pressure centrifugal chiller



HIGHLIGHTS
The Stationary PREVAC System Provides:
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“Pressure Seal” Mode 0.00psig Fixed Set Point
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“Leak Test” Mode 0.00 to 6.00psig Adjustable Setting
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1/100 psi Accuracy
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Proportional Control
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Pressure Activated and/or Electrically Interlocked
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Water Heating Vessel
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Fully Temperature Controlled
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20kW 480v or 12kW, 240v Heating Capacity
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Stainless Steel Housing for Heaters
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350 psi Pressure Rating
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30 gpm Pump
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High Pressure Warning & Disconnect
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30 amp Circuit Breaker
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Audible and Visual Alarms
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High Pressure Trip
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BAS Interface
