Thin Film Technology Building Integrated PV

Zephyr Power Vent
Battery Box Ventilator & Back Draft Damper

• Positive venting of hydrogen gas.
• Stops back drafting.
• Puts the smell outside.
• Keeps batteries warmer in cold climates.
• Uses very little power.
• Excellent results for over four year

 The Zephyr POWER VENT was designed for use in remote home power  systems. The concept arose from field experience of systems with  enclosed battery boxes. Quite often the NEC required venting was found  back drafting, thus cooling the battery bank and lowering its' capacity  as well as venting hydrogen gas into the structure.

The POWER VENT alleviates this condition by keeping a gravity  operated damper closed within the vent pipe except at times when the  batteries are being charged and producing hydrogen gas. During these  times the battery box is force vented with a low power, sparkless fan  which overcomes the damper sending the gas outdoors. The "fan on" mode  is determined by the battery voltage. When the batteries are "gassing"  during charge periods the battery voltage will read above normal. A  voltage sensitive switch is required in the system to make the on/off  determination. All TRACE SW model inverters have a programmable  auxiliary relay which can operate the POWER VENT. Other systems require  the addition of a voltage controlled switch.

The POWER VENT is designed around typical home power systems  with battery banks under 2,200 amp hours and charge rates under 150 dc  amperes. Systems larger than this can produce more hydrogen gas than the  expel rate of the POWER VENT which operates in the 5 to 8 cubic  foot per minute range. Two vents may be used for higher volume.

Comes in 3 voltages: 12, 24 and 48 Volts DC

Specifications

Prices:

12& 24 volt  $85

48 volt         $110