Is the rectangular damper needed if there is an external damper already at end of the exhaust duct outside?
This is a 2-part question. The AHDA1 comes with a damper-assemply (rectangular adapter) or a 7 in round connector (no damper). My question has to do with conditions where there is no damper, or alternatively conditions where you may wind up double-dampered. So will there be problems if I use the included 10 x 3.25 rectangular damper-assembly to connect with the exhaust duct when there is already an external damper outside built into the exhaust end cap? And for those who are connecting using the included 7 in diameter connector (no damper) will they need to add a damper somewhere in the duct-work if none exists?
Thank you for your question. The 3 1/4 damper is required if vent outside. If using 7" round duct work, you can use a 7" round in-line damper along with your outside damper. It is normal to have a damper at the unit and a damper outside. For further assistance, contact Technical Support at 888-336-6151.
Date published: 2018-10-29
models with 5" verticle exhaust duct
Replacing existing range hood that has a 5"dia duct inside a 51/4" inside dimension vertical wooden enclosure. Bought a model AHDA130SS which has a 7" exhaust.
Thank you for your question. The AHDA1 his rated at 300CFM on high, you will need to change your duct work to at least 6" if you wish to run this unit on the highest setting. 5" duct work will constrict the airflow and will cause an excess build up of static pressure. The duct work will need to be increased if you wish to duct this unit. For further assistance, contact Technical Support at 888-336-6151.
Date published: 2018-12-10
Power to to unit, but nothing works. Is there a reset button or lockout switch on the AHDA1?
We attempted to bench test our new AHDA1 by connecting it to a verified 120V (20A) household supply, carefully observing that hot, neutral, and ground were correctly mated, and making all electrical connections according to the supplied instructions... BUT nothing worked... no lights... no fan. The AHDA1 was mounted, but not vented yet. We did not remove any of the exhaust covers (7" round, 10x3.25" rectangular, or the recirculating cover), because we wanted to know we had a working unit before going to the trouble of making the vent connections. So before we exchange the unit for another one, can you tell me if there is a step not mentioned in the install instructions that we missed. For example is there a lock-out switch somewhere or a reset button somewhere?
Thank you for your question. It is possible that the model you purchased has a defective transformer. You will want to return the unit to the place of purchase for a new unit.
Date published: 2018-11-08