Thepackagedunitisequippedwitha 3/4inchfptcoupling
forcondensatelineconnection.Plumbingmustconformto
localcodes.Use a sealingcompoundon malepipe
threads.
Thedrainlinemustbeproperlytrappedandroutedtoa
suitabledrain.Seefigure3forproperdrainarrangement.
Thedrainlinemustpitchto anopendrainor pumpa
minimumof 1inchper10feetto preventcloggingofthe
line.Sealarounddrainconnectionwithsuitablematerialto
preventairleakageintoreturnairsystem.
Drainpipingshouldnotbesmallerthandrainconnectionat
coil.Anopenventindrainlinewillsometimesberequired
dueto line length,frictionandstaticpressure.Drains
shouldbeconstructedinamannertofacilitatefutureclean-
ing.
NOTE - The condensate drain fine MUST be trapped to
provide proper drainage.
Duct system should be designed and sized according to
the methods in Manual Q of the Air Conditioning
Contractors of America (ACCA).
A closed return duct system shall be used. This shall not
preclude use of economizers or outdoor fresh air intake. It
is recommended that supply and return duct connections
at the unit be made with flexible joints.
The supply and return air duct systems should be designed
for the CFM and static requirements of the job. They
should NOT be sized to match the dimensions of the
duct connections on the unit,
Ak CAUTION
Typical Condensate Drain
Minimum Pitch
1 in. (25 ram) per
10' (3 m) of line
open
vent
unit
,%
Trap must be deep enough to offset maximum mounting
static difference (Generally, 3 inches minimum), frame
Figure 3
The vent hood is installed by placing screen in hood and
securing with four #8 x 3/8 large blunt sheet metal screws
and four #8 flat speed nuts as shown in figure 4. Place hood
with screen in position and attach with three #8 x 1/2 sheet
metal screws using holes provided.
Vent Hood Installation
o
HOOD 1
screen
No filters are supplied with the unit. Filters must always be
installed ahead of evaporator coil and must be kept clean or
replaced. Dirty filters will reduce the airflow of the unit.
Filters sizes are shown in table 1.
Unit is equipped with an internal filter clip which is located in
indoor coil compartment attached to side of the unit drain
pan.
Table 1
Unit Filter Size
Unit Model Filter Size
-024, -030, -036 24 in. X 25 in.
-042 28 in. X 25 in.
-048 -060 30 in. X 30 in.
Figure 4
The products of combustion are discharged horizontally
through a screened opening on the gas heat side panel.
The horizontal vent system shall terminate at least 4 feet
below, 4 feet horizontally from, or 1 foot above any door,
window, or gravity air inlet into the building. The vent
system shall terminate at least 3 feet above any forced air
inlet located within 10 feet. The bottom of the vent
terminal shall be located at least 12 inches above grade.
Minimum horizontal clearance of 4 feet from electric
meters, gas meters, regulators, and relief equipment is
required.
Page 6
To Next Page
Loading...