Exterior Wall Mounted Cooling Unit (3)

Marvair DAC (Door Air Cooling) and WAC (Wall Air Circulation) units

Air Circulation  Volume : 2000 CFM    No Coolimg , No Heating 

are direct air cooling units designed to provide free cooling for telecom 

shelters and cabinets. The DAC is designed for installation on a door and 

the WAC is designed to be mounted on a wall in place of a wallmount 

air conditioner unit and includes a door-mounted exhaust damper. 

The units consist of a 48 VDC backward curved, single inlet electronically 

commutated centrifugal fan, an outside (intake) air assembly with a motorized 

damper, a 4” (102 mm) disposable MERV 13 filter, and the CoolLinks control 

board housed in a steel cabinet. Pressure relief is provided by a powered exhaust 

damper on the opposite side of the shelter or cabinet. An exhaust damper on the 

opposing wall ensures optimal air circulation throughout the building. 

An anti-corrosion protective coating on the cabinet and the internal components 

is available as an option

➤ Door Mounted Direct Air Cooling Unit DAC: The Marvair Door Mounted Direct 

Air Cooling Unit (DAC) is designed to install in a standard shelter door. The DAC 

operates on 48 VDC and is installed in an opening in the door. The DAC unit provides 

free air cooling and the installation kit includes all necessary hardware and a wall-

mounted exhaust air damper to relieve pressure within the building

➤ Wall Mounted Direct Air Cooling Unit WAC: The Marvair Wall Mounted Direct 

Air Cooling Unit (WAC) is designed as a direct replacement for a standard sized wall 

mounted air conditioner unit. The WAC operates on 48 VDC and is installed using 

the existing supply air wall openings. When replacing an A/C unit, the WAC back panel 

covers/seals the existing return air opening. The WAC unit provides free air cooling and 

includes a door-mounted exhaust air damper to relieve pressure within the building