Instructions / Assembly

Master Flow Evaporative Cooler Duct Kit

Installation Instructions

!!Warning!!

Improper installation, adjustment, or alteration can cause injury or property damage. For assistance

or additional information; consult a qualified installer, or service agency.

**Important**

Please refer to any state, local ordinances (including plumbing and

electrical codes) prior to installation. Local authorities having jurisdiction

should be consulted before installation is made. Such applicable regulation

or requirements take precedence over the general instructions in this

manual.

* You will need to purchase the correct leg kits to install your cooler – SOLD SEPARATELY *

1. Check contents of the box to be sure you have all of the components:

• Two piece starter section – one flashing with square duct, -- one flashing with a round collar

• Ceiling Register Box (square box with flanges and a round collar)

• Ceiling Diffuser (white finish)

• 10 foot section of Insulated Flexible Duct

2. Determine the best location for the evaporative cooler on the roof, keeping in mind such factors as:

accessibility for future maintenance, visibility from various angles, sufficient attic space below for ductwork, and

strength of the structure to handle the weight of the cooler filled with water (operating weight). Also check if the

distance between rafters is wide enough to accommodate the round starter section.

3. Determine the location of the ceiling diffuser. For best results, find a centralized spot where cool air can

travel to all rooms of the house. Make sure there are no obstacles in the attic above the ceiling, and the distance

from the roofline below the cooler to the desired diffuser location is 10 feet or less. If it is more than 10 feet, you will

need to add a section of metal pipe or an adjustable elbow (sold separately).

4. From inside the attic, run a nail up through the roof along the side of the rafters below where the cooler will

sit. Return to the roof, and mark the area between the rafters at least ¼” bigger than the square flashing. Saw a hole

in the roof where you marked. Slide a pry bar under the shingles within 6” of the hole to loosen, and remove all nails

from the shingles above and on the sides of the opening.

5. Above the location of your diffuser, clear away all insulation, and trace the inside of the register box on the

ceiling. After cutting the hole, put the register box in position and nail in place. Then attach the diffuser to the box

from below.

6. Returning to the roof, install the 2 piece starter section in the roof, with the round collar protruding down

through the roof, and the square duct above it, sticking up off the roof. Nail them both into place, making sure to

keep it tight and waterproofed with a silicone sealant. Replace and repair all of the shingles around the flashings,

being sure to overlap the flashing on the upslope. Ensure all roof penetrations are sealed with silicone sealant or

roof mastic.

7. Install Evaporative Cooler and leg kit per Manufacturer Installation Instructions.

8. Inside the attic, attach the flex to the round collar of the starter section and run it down to the collar of the

9. Finalize your installation by following the instructions that came with your evaporative cooler.