'In-Line' type motorized damper to control Replacement, Make-up, Ventilation and Zone Air for Residential and Commercial buildings.

General Damper Identification: i.e. HAC - 1220 - SP0 - (Special for heat)

Series - Diameter, Motors, Relays - End Switch, Power 0pen/Closed - (H)

HAC - 12" Dia. , 2 Motors , 0 Relays - 1 End Switch, Power Open - (H for excess heat)

Features Include:

• Install in-line as part of standard round duct.
• Durable, patented HOYME 'spring motor drive' with nylon bearings.
• From 4" to 10" dia.- 24 gauge galvanized steel; from 12" to 18" dia.- 22 gauge galvanized steel.
• Series HAC dampers can be spring returned with Power Open, Power Closed or powered both open and closed with relays, a switch and continuous 24VAC supply.

Options Include:

1. Adapts to a two Furnace System.

2. Interface Relay Adaptors permit connection to Line Voltage controls.

3. Dampers can be made with or for BELIMO actuators.

4. Dampers can also be made square or rectangular in shape upon request. Contact factory for details.

This damper is used extensively for the new ventilation code which requires a designated exhaust fan with switch, a centrally located switch marked 'VENTILATION' and a fresh air intake damper, all interconnected to the furnace circulation fan. These Dampers may be purchased in kit form and referred to in a brochure 'MAKE-UP-AIR KIT' FOR HOUSES.