Exterior Blower Installed On Roof

Exterior blowers may be vented through the roof or wall with the goal of minimizing sharp turns in the duct that can impede.

Exterior blower installed on roof.

Check for and retighten any bolts or screws that may have become loosened. Depending on your preference and ducting situation these blowers can be mounted on the roof or exterior wall of your home. Rafter vents or insulation baffles install in any rafter space to create narrow gaps that direct fresh air from the soffit vents to the peak of the roof. For flat roofs having a pitch less than 1 1 2 of rise per 12 length mount the blower on a roof curb as shown in figure 1.

Before installing your roof mounted exhaust fan inspect the equipment for any interior or exterior damage. Prepare location and install blower flat or low slope roof mount 1. Durable sealed blower housings are crafted from weather resistant aluminum and can be painted to match the roof or wall color scheme. The hole should be around 14 inches wide and 18 inches long.

The table below will help you select an exterior blower matched to the heat output of your range hood. Remote blower install instructions author. It has to be ducted. Use the extncb25 blower cable connection accessory for install with select hoods.

If you have further technical or installation questions please contact our broan technical support department at 1 800 637 1453 between 7 30 am and 6 00 pm cst monday friday. Position the blower so that discharge end of the blower slopes downward and away from prevailing winds. Place the blower against the hole that was cut in the roof or wall. Rfplt1000p roof plate required for roof mount application separate purchase required.

Plywood or osb roof sheathing can be installed over exterior insulation layers using long exterior grade screws. See page 90 for more information on selecting the right blower for your range or cooking style. The 332h externally mounted blower is installed on the outside of a home. Using a circular saw cut a hole in the wall or roof where the blower will be mounted.

Step 2 mount the external blower. If going through the roof shingles may need to be first cut away with a utility knife. Then turn the blower wheel by hand to make sure that it is able to rotate freely. It is not designed to be mounted internally or used as a non ducted motor.

These specialty vents do not affect the. 2 22 2012 3 57 41 pm. An unvented roof cladding substrate e g. Remote blower install instructions created date.

Best exterior blowers are installed at the duct termination point roof or exterior wall providing the greatest distance between the point of use and the blower.