12
12 in
305 mm
24 in
610 mm
12 in
305 mm
24 in
610 mm
NOTE - Minimum clearances shown.
Figure 20. Unit installed in Alcove
Buried Refrigerant Pipe Protection
• All
refrigerant lines must be insulated regardless of if
it is buried
• In addition to insulating each line of piping, buried lines
must rest inside a
sealed, watertight
conduit
• The conduit must be designed so it cannot collect and
retain water
Outdoor Unit Condensate Piping
Condensate formed during the heating and defrost
processes must be drained from heat pump units. Drain
holes are provided in the base of the units to ensure proper
drainage. Heat pumps must be raised when installed on a
concrete pad or the ground to allow drainage to occur. If
the heat pump unit is installed on wall mounting bracket,
insert the provided drain connector into one of the 1
inch (25 mm) drain holes and attached a field-provided
insulated drain hose to the connector. Use field-provided
rubber plugs to cover any unused drain holes.
Drain
Connector
Chassis
Condensate Drain
(location varies per model)
Figure 21. Condensate Drain
Securing the Outdoor Unit
Slab or Roof Mounting
Install the unit a minimum of 4 inches (102 mm) above the
roof or ground surface to avoid ice build-up around the
unit. Place the unit above a load bearing wall or area of
the roof that can adequately support the unit. Consult local
codes for rooftop applications.
CAUTION
Roof Damage!
This system contains both refrigerant and oil. Some
rubber roofing material may absorb oil. This will cause
the rubber to swell when it comes into contact with oil.
The rubber will then bubble and could cause leaks.
Protect the roof surface to avoid exposure to refrigerant
and oil during service and installation. Failure to follow
this notice could result in damage to roof surface.
Securing Outdoor Unit to Slab, Frame, or Rails
If the outdoor unit is installed on a field-provided slab or
frame, use lag bolts or equivalent to secure the outdoor
unit to the slab or frame.
Four Field-provided Anchor Bolts
Figure 22. Securing Outdoor Unit to Slab
Four Field-Provided
Anchor Bolts
Figure 23. Securing Outdoor Unit to Rails
Securing Outdoor Unit To Hanging Brackets
If the outdoor unit is installed on field-provided wall
mounting brackets, use lag bolts or equivalent to secure
the outdoor unit to the bracket. Minimum rear clearance
can be reduced to 6 inches (152 mm) when mounted
on brackets and with no obstructions on the other three
sides. Allow for condensate disposal when placing units
above one another.
Air Outlet
Air Inlet
6 in
152 mm
Figure 24. Securing Outdoor Unit to Brackets
