The new exterior mount Auto-Draft Power Venters are suitable for side-wall or roof-top venting, says the manufacturer. By adding the CPC-2 constant-pressure controller, the fan speed is automatically regulated based on a user set manifold/vent pressure, resulting in “perfect draft and true energy savings,” says the company. Features include simple interlock connections, adjustable pre- and post-purge, and fan speed braking, designed to quickly reach the pressure setpoint when exhaust loads are suddenly reduced. According to the company, makeup/combustion air blower and exhauster can be interlocked into a single controller. Plug-in expansion boards enable up to 14 appliances to be interlocked, it says.

- Tjernlund Products, Inc.

White Bear Lake, MN