IOMM ACZ1 ACZ 010A through 039A
5
Clearances
The flow of air to and from the condenser
coil must not be limited. Restricting
airflow or allowing air recirculation will
result in a decrease in unit performance
and efficiency. There must be no
obstruction above the unit that would
deflect discharge air downward where it
could be recirculated back to the inlet of
the condenser coil. The condenser fans are
propeller type and will not operate with
ductwork on the fan outlet.
Install the unit with enough side clearance
for air entrance to the coil and for
servicing. Provide service access to the
compressors, electrical control panel and
piping components as shown in Figure 3.
Do not block access to the unit with piping
or conduit.
Do not allow debris to accumulate near the
unit. Air movement can draw debris into
the condenser coil causing air starvation.
Give special consideration to low ambient
operation where snow can accumulate.
Keep condenser coils and fan discharge
free of snow or other obstructions to permit
adequate airflow.
Sound Isolation
The low sound levels of the ACZ units are
suitable for most applications. When
additional sound reduction is necessary,
locate the unit away from sound sensitive
areas. Avoid locations beneath windows or
between structures where normal-operating
sounds may be objectionable. Reduce
structurally transmitted sound by isolating
electrical conduit and the unit itself. Use
wall sleeves and rubber isolated refrigerant
piping hangers to reduce transmission of
noise into occupied spaces. Use flexible
electrical conduit to isolate sound through
electrical conduit. Spring isolators are
effective in reducing the low amplitude
sound generated by the compressors and for
unit isolation in sound-sensitive areas.
Figure 3, Clearance requirements
4 Ft.
(1220mm)
Clearance for
Service Access
4 Ft. (1220mm)
Clearance for Air Inlet
4 Ft.
(1220mm)
Clearance for
Service Access
4 Ft. (1220mm)
Clearance for Air Inlet
The recommended minimum side clearance between two units
is 8 feet (2440mm).
The unit must not be installed in a pit or enclosure that is
deeper or taller than the height of the unit unless extra space
is provided. The minimum clearance on each side of the
unit is 6 feet (1828mm) when installed in a pit. The pit cannot
be deeper than the unit.
The minimum clearance to a side wall or building taller than
the unit height is 6 feet (1828mm) provided no solid wall
above 6 feet (1828mm) tall is closer than 12 feet (3658mm)
to the opposite side of the unit.
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