Installation manual

Preparing the Enclosure

DDB air conditioning systems have been designed to be lighter in weight for easy

installation. Our wall (vertical) mount units have been designed with a simple “two stud”

alignment feature to make initial fastening to the enclosure quick and easy. A few

modifications must be made to your enclosure to provide proper air flow, maintain

enclosure integrity and assure secure installation. Required modifications will vary with

air conditioner model.

1. Determine the location of the unit system on your enclosure.

**Caution**

With wall mount units, be sure the weight of the air conditioning system will not cause

the enclosure to become unbalanced causing bodily harm or equipment damage. For

units mounted on enclosure doors, be sure the hinges will support the weight of the unit.

Refer to system specifications for model weights.

2. Upon deciding the location of the unit on the enclosure, attach the template which has

been packaged with your system to the enclosure surface. (You can use the template to

help you decide unit location.)

Be sure that the unit will be mounted level and that the

inlet and outlet of the cold air stream will not be restricted by equipment or shelving

within the enclosure. Also check that the air flow of the warm air stream will not be

affected or restricted by surroundings.

3. Outline the modifications to be made to the enclosure using a marking pencil. Note

the boltholes, cutouts for the inlet and outlet air streams, and the power cord.

4. Make the holes for the studs, bolts, and power cord using a drill. (Bit size will vary

with model.) Be sure to protect any equipment located within the enclosure from debris

produced during the installation procedure.

5. Drill a pilot hole for a saber saw to cut the inlet and outlet air passages. File all cuts

to provide a uniform cutout.

6. Slide the mounting studs through the matching holes in the enclosure and check to

see that all openings are aligned. (Top mount units do not have mounting studs.)

7. After checking that all opening and bolt holes are in alignment, apply the gasket

material ( provided with your system ) to the air conditioning system cabinet to ensure

an air tight NEMA integrity. *Caution* Be careful while removing the backing on the

gasket material. The material may stretch and the holes will not align. *Note* If the

enclosure is not air tight or the air conditioning system operates with the

enclosure door(s) open, a great deal of moisture will condense inside of the air

conditioning system and possibly overflow the condensate management system.

8. After all gasket material has been installed, mount the unit onto the enclosure and

fasten it using the nuts and bolts provided with your system. Check to be sure all

fasteners have been tightened securely

and the gasket material is in place to maintain

enclosure integrity. You are now ready to operate your unit.