506694-01
Issue 1720
Page 6 of 16
Positioning Considerations
In order to avoid injury, take proper precaution when
lifting heavy objects.
CAUTION
Physical contact with metal edges and corners while
applying excessive force or rapid motion can result in
personal injury. Be aware of, and use caution when
working near these areas during installation or while
servicing this equipment.
CAUTION
Consider the following when positioning the unit:
• Some localities are adopting sound ordinances based
on the unit’s sound level registered from the adjacent
property, not from the installation property. Install the
unit as far as possible from the property line.
• When possible, do not install the unit directly outside
a window. Glass has a very high level of sound
transmission. For proper placement of unit in relation
to a window, see the provided illustration in Figure 5.
Placing Outdoor Unit on Slab
When installing a unit at grade level, the top of the slab
should be high enough above the grade so that water
from higher ground would not collect around the unit as
illustrated in Figure 5.
Slab may be level or have a slope tolerance away from the
building of not more than two degrees, or 2 inches per 5
feet (51 mm per 1524 mm) as illustrated in Figure 5.
Installing Outdoor Unit on Roof
Install the unit at a minimum of 4 inches (102 mm) above
the surface of the roof. Ensure the weight of the unit is
properly distributed over roof joists and rafters. Redwood
or steel supports are recommended.
Replacement Line Set
This section provides information on replacement of
existing line set. If replacement line set is not required,
then proceed to Brazing Connections on Page 7.
Refrigerant Line Set
Field refrigerant piping consists of liquid and suction lines
from the outdoor unit (braze connections) to the indoor unit
coil (flare or braze connections). If replacing line set, use
brazed, non-flare line set, or field-fabricated refrigerant
lines as listed in Table 2.
Existing line set should meet size requirements listed in
Table 2.
NOTE:
When installing refrigerant lines longer than 50
feet, contact technical support for assistance. To obtain
the correct information from manufacturer, be sure to
communicate the following points:
• Model (13ACD) and size of unit (e.g. -060).
• Line set diameters for the unit being installed as listed
in Table 2 and total length of installation.
• Number of elbows and if there is a rise or drop of the
piping.
Model
Field Connections
Recommended Line Set
Liquid Line
Suction Line
Liquid Line
Suction Line
Line Sets
13ACD-018-230
3/8 in. (10 mm)
3/4 in. (19 mm)
3/8 in. (10 mm)
3/4 in. (19 mm)
Field-fabricated
brazed, non flare
13ACD-024-230
13ACD-030-230
13ACD-036-230
3/8 in. (10 mm)
7/8 in. (22 mm)
3/8 in. (10 mm)
7/8 in. (22 mm)
13ACD-042-230
13ACD-048-230
13ACD-060-230
3/8 in. (10 mm)
1-1/8 in. (29 mm)
3/8 in. (10 mm)
1-1/8 in. (29 mm)
Table 2. Refrigerant Line Set - inches (mm)
Roof Damage!
This system contains both refrigerant and oil. Some
rubber roofing material may absorb oil and 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.
NOTE
