Piping Preparation
1. Do not open service valves or remove protective caps on pipes until instructed by this manual.
2. Keep tubing free of dirt, sand, moisture and contaminants.
3. Insulate each refrigerant pipe and condensate hose with minimum 3/8” (10 mm) wall
thermal pipe insulation.
4. Bind refrigerant pipes and communication cable together with cable ties at 12-inch intervals.
5. Include the condensate hose in bundle for exterior portion only.
14
PIPING INSTALLATION
Refrigerant Piping
Drill Hole in Wall
1.
Locate and mark proper location for the wall hole.
2.
Cut the 2 3/4” wall hole with a 5° to 10°
downward slant to the outdoors.
3. Insert a wall sleeve (field supplied) into hole to
to prevent damage to refrigerant pipes, insulation,
condensate drain hose and wiring.
4. Proper weather proofing of the wall surface and
wall sleeve is essential to assure a trouble-free
installation. Apply sealant, caulking or equivalent weather proofing material
around the perimeter of the wall sleeve (interior & exterior) to eliminate outdoor air and
water leaks into the indoor space.
NOTE: Expandable foam insulation may be added to fill large wall gaps. Apply per
manufacturer's instructions.
Seal Hole
Hole Size
Indoor
Outdoor
Wall Hole Diagram
Indoor Unit below Outdoor Unit Application
When height difference between indoor unit and outdoor
unit is more than 30 feet, an oil return bend should be added
for every 20 feet of connection pipe as shown.
Wall
Hole Sleeve
Insulate entire interior section of condensate hose to prevent sweating which may cause water
stains or wall damage.
CAUTION
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