PRO
3
TOP MOUNT PACKAGED REFRIGERATION SYSTEM
6
THE OUTDOOR PRO
3
COMES STANDARD WITH THE
FOLLOWING ADDITIONAL COMPONENTS:
■ Crankcase Heater
■ Drain Line Heater
■ Weather Hood
■ Fan Cycling (Pressure on 1 fan models,
Pressure and Ambient on 2 fan models).
STANDARD INSTALLATION PROCEDURE
FOR OUTDOOR USE
1. Provide a 25” X 25” (medium cabinet) or 25” X 38.5”
(large cabinet) opening in the roof of walk-in cooler or
as specified by the panel manufacturer.
2. Apply silicone caulk around the perimeter of roof
opening. Place the curb on roof of cooler. It is
recommended that the curb be fastened to the roof
panels using non-conductive bolts or insulating the bolt
heads. Bolt heads should be countersunk or low profile
to prevent contact with the PRO
3
system. (See Figure
1, page 7) Check the top of the curb with a level. PRO
3
units require a surface that is within 1° of level or better
and no more than a 5/8” drop per 3 feet (17mm drop
per meter).
3. Install the membrane onto the roof of the box and
over the curb. Fasten to roof per panel manufacturer’s
instructions. The membrane material should be slit over
the evaporator grill opening the flaps allowed to drape
into the hole 2” - 4”. (See Figure 2, page 7) Care should
be taken during the membrane installation to prevent
bunching or folding which could aect the gasket-to-
curb sealing or trap rainwater adjacent to the curb.
4. Remove the weather hood from the PRO
3
system. The
compressor compartment cover(s) should be left in
place during lifting/rigging.
5. Place PRO
3
system onto curbing and center over
opening in roof box. (See Figure 3, page 7)
6. It is recommended that the PRO
3
system be secured
to the curb with wood screws. Seal the screw heads as
necessary to prevent moisture from entering beneath
the membrane. Additional caulk may be applied around
the perimeter of the evaporator box gasket. The
compressor compartment should not be caulked.
7. Install trim pieces (if used) around the ceiling opening
in cooler.
8. Add water to the condensate drain line to maintain liquid
seal in the P-trap.
9. Remove compressor compartment cover for access to
electrical box.
10. Connect power wiring in accordance with all applicable
building and electrical codes.
11. Reinstall condensing unit cover(s).
12. Reinstall the protective weather hood.
(See Figure 4, page 7)
13. Apply power and check for proper operation.
DRAIN LINE
A condensate drain outlet is located on the side of the
compressor compartment. Field piping may be connected
to the outlet provided it is adequately sloped and heated
for freezing weather conditions. There is a drain line “P”
trap located in the outdoor unit.
GENERAL SAFETY INFORMATION:
■ Do NOT lift the PRO
3
by the weather hood.
■ This product is not designed to be transported while
installed or operating
Condensate Drain
Outlet Location
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