Removing Existing Outdoor Unit; Positioning New Outdoor Unit - Lennox TSA036H4N41 Installation Instructions Manual

3. When the low side system pressures reach 0 psig,
close the suction line valve.
4. Check gauges after shutdown to confirm that the
valves are not allowing refrigerant to flow back into the
low side of the system.

Removing Existing Outdoor Unit

Perform the following task at the existing outdoor unit:
S
Disconnect line set at the service valves.
S
Disconnect electrical service at the disconnect switch.
S
Remove existing outdoor unit.

Positioning New Outdoor Unit

CAUTION
In order to avoid injury, take proper precaution when
lifting heavy objects.
See Unit Dimensions on page 2 for sizing mounting slab,
platforms or supports. Refer to figure 7 for mandatory
installation clearance requirements.
(SEE NOTES BELOW
(SEE NOTES
BELOW
FIGURE)
BELOW FIGURE)
Figure 7. Installation Clearances
NOTES:
S
Service panel access clearance of 30 in. (762 mm)
must be maintained.
S
Clearance to one of the other three sides must be 36
.
in. (914 mm)
S
Clearance on one of the remaining two sides may be
12 in. (305 mm) and the final side may be 6 in. (152
.
mm)
S
Clearance required on top of unit is 48 in. (1219 mm).
S
A clearance of 24 in. (610 mm) must be maintained
between two units.
POSITIONING CONSIDERATIONS
Consider the following when positioning the unit:
S
Some localities are adopting sound ordinances based
on the unit's sound level registered from the adjacent
FIGURE)
(SEE NOTES
BELOW
FIGURE)
SEE NOTES
property, not from the installation property. Install the
unit as far as possible from the property line.
S
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 8.
INSTALL UNIT AWAY
FROM WINDOWS
TWO 90° ELBOWS INSTALLED
IN LINE SET WILL REDUCE
LINE SET VIBRATION.
Figure 8. Outside Unit Placement and Installation
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 9.
BUILDING
STRUCTURE
Figure 9. Typical Slab Mounting at Ground Level
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 9.
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. Either
redwood, steel supports, or roofed in equipment platform is
recommended.
Page 5
DISCHARGE AIR
MOUNTING
SLAB
GROUND LEVEL
TSA*H4 SERIES