A power venter certified for use as an add-on to a water heater may be used on a water heater with an input of which Btuh?

A power venter certified for use as an add-on to a water heater may be used on a water heater with an input of which Btuh?

• A. 50,000 Btuh
• B. 25,000 Btuh
• C. 100,000 Btuh
• D. 35,000 Btuh

Answer: (C)

Power venters certified as an add-on are listed for a specific maximum water heater input. The certification guarantees the venting system can handle the exhaust from a heater up to that input level. In this case, the add-on power venter is certified for water heaters up to 100,000 Btuh, so it may be used with a water heater whose input is 100,000 Btuh or less. Using it with a higher input would exceed the listed rating and void the approval, risking improper venting and safety issues. Always verify the heater’s nameplate input and the venter’s certification to ensure compatibility.

Power venters certified as an add-on are listed for a specific maximum water heater input. The certification guarantees the venting system can handle the exhaust from a heater up to that input level. In this case, the add-on power venter is certified for water heaters up to 100,000 Btuh, so it may be used with a water heater whose input is 100,000 Btuh or less. Using it with a higher input would exceed the listed rating and void the approval, risking improper venting and safety issues. Always verify the heater’s nameplate input and the venter’s certification to ensure compatibility.