Nortek Q104SD Series, User Manual

Page: 7 / 20

7
Air Filter Requirements
WARNING:
Never operate the unit without a filter in place.
Dust and lint could accumulate on internal parts,
resulting in loss of efficiency, equipment damage,
and possible fire.
NOTE TO INSTALLER:
After installing or replacing the
filtration system for this unit, add the following statement
on or adjacent to the filter service panel: “Replace filter(s)
installed in your system only with the same dimensional
size filters that are being replaced.”
• An air filter is not supplied with this package unit as
shipped from the factory. The installer must provide
a high velocity filter that is appropriately sized to the
return air duct opening or internal filter rack. The filters
must comply with ANSI/UL 900 or CAN/ULC-S111.
• Horizontal installations require the air filter system be
installed in the return air ductwork.
• For recommended external filter sizes, refer to Table 2
(page 12) under
Heat Pump Maintenance
• All return air must pass through the filters before entering
the evaporator coil. It is important that all filters be kept
clean and replaced frequently to ensure proper operation
of unit. Dirty or clogged filters will reduce the efficiency
of the unit and result in unit shutdowns.
• Air filter pressure drop is recommended not to exceed
0.08 inches WC.
• Single phase downflow applications require either a
Nortek internal filter kit be used, or an air filter system
be installed in the return air ductwork. See Table 2 for
specific unit model and filter sizes.
• Horizontal installations require the air filter system be
installed in the return air ductwork.
HEAT PUMP INSTALLATION
Packaging Removal
Remove the shipping carton and User’s Manual from
the equipment. Take care not to damage the tubing
connections when removing the carton. For rooftop
installations, remove and discard the two supports attached
beneath the unit.
Rigging & Hoisting
WARNING:
To avoid the risk of property damage, personal
injury, or death, it is the rigger’s responsibility
to ensure that whatever means are used to hoist
the unit are safe and adequate:
• The lifting equipment must be adequate for the
load. Refer to
Table 3 (page 13)
for unit weights.
• The unit must be lifted from the holes in the
base rails using cables or chains.
• Spreader bars are required to protect the unit
and ensure even loading.
• Keep the unit in an upright position at all times.
The rigging must be located outside the units
center of gravity. Refer to
Figure 7 (page 13)
for locating the center of gravity.
• All panels must be securely in place during
rigging and hoisting.
Minimum Clearances
Q104SD units are certified as combination heating and
cooling equipment for outdoor installation only. Figure
2 (page 6) displays the minimum clearances to
obstructions for both downflow and horizontal discharge.
Units may be installed on wood flooring or on Class A, B,
or C roof covering material when used with bottom supply
and return air ducts as long as the following requirements
are met:
• If using horizontal supply and return air ducts, the
horizontal roof curb kit and return air kit must be installed
prior to unit installation. Horizontal roof curb is required.
• If using bottom discharge with return air ducts a roof
curb must be installed prior to unit installation. See
Rigging and Hoisting section for setting of the unit.
Ground Level
Ground level installations must be located according to
local building codes or ordinances and these requirements:
• Clearances must be in accordance with those shown
in Figure 2. Also consider clearances for access to the
internal filter.
• A suitable mounting pad must be provided and separate
from the building foundation. The pad must be level to
ensure proper condensate disposal and strong enough
to support the unit’s weight. The slab height must be a
minimum of 2” (5cm) above grade and with adequate
drainage. See Figure 3 .
2”
Figure 3. Ground Level Installation