Draft Inducers

Correctly sizing the amount of fresh air to compensate for negative pressure, vent run, and number of elbows will ensure the fireplace works correctly. The UL test on a custom fireplace is done on an individual basis. An inspector from UL will visit the factory once a month and witness the fireplace burning. When the custom fireplace arrives on site it has already run and there is very little chance of failure.

Every fireplace we install has a draft inducer. The draft inducer is attached in the exhaust pipe.

Rooftop inducers

• This type of draft inducer is installed at the very end of the exhaust chimney.
• The roof top termination must be a minimum of 3’ above the roof and 24” away from other structures.
• The chart on the right gives the distances allowed for Stellar custom fireplaces. These are the distances that Stellar listed in their tests with UL. Each manufacturer has their own criteria. This chart is good for any of the fireplaces we sell.
• As you can see the restrictions on direct vent are much less than a conventional fireplace and will allow for easier coordination. The Stellar fireplaces can be vented out the side of the building and do not have to go above the roof as do conventional fireplaces. The venting can be on a negative pitch. The Stellar fireplaces are tested for a maximum negative pitch of 30’. The distance can be increased but that would require additional testing through UL.
• The lengths the vents run are almost limitless.
  • The length can be compensated for with flue size and draft inducer size. On runs of 150’ or more or where excessive elbows are required pressurized pipe is used. This greatly reduces the chance for leaks which cause a loss of draft.

In-line inducers

• This type of draft inducer may be 220 3 phase or 120 single phase depending on the required motor size.
• Must be a minimum 6’ from the fireplace to prevent overheating.
• Normally an in-line draft inducer will exhaust to a louver.
• By placing the draft inducer as close to the louver as possible the exhaust will be pulled out and there is little chance of a leak.
• The draft inducer can be installed closer to the fireplace but that requires a pressurized chimney since the exhaust will be pushed through the pipe.
• The standard B vent is not allowed in this situation. Pressurized pipe is roughly 4 times the cost of B vent. The size will remain the same but the cost of the pipe and the installation is more expensive.

Straight Line Inducers

• This draft inducer requires 220volt 3phase power.
  • Or 90 degrees offset

Would you like to speak to us about getting a custom fireplace made?

Please call Elegant Flames at (845) 255-4507 or you may use the form below for general inquiries.