Damper Assemblies - Daikin Rebel DPS003 Installation And Maintenance Manual

DOT-ITB-21-8041-AC
Table 4: Energy Wheel Weight Additions
30% OA
Small
160
Cabinet
Large
225
Cabinet
Table 5: Curb Weights
Unit
3–6 Ton
7 .5–15 Ton
Unit Piping - Condensate Drain Connection
The unit is provided with a 3/4" male NPT condensate drain
connection. For proper drainage, level the unit and drain pan
side to side and install a P-trap .
Figure 5 shows the layout of the condensate drain connection.
The distance from the drain pan outlet to the horizontal run of
the P-trap should be a distance of twice the static pressure in
the drain pan.
Example: If the static pressure as measured in the drain pan
is 1.5", then the distance between the drain outlet and the
horizontal run should be 3".
Draining condensate directly onto the roof may be acceptable;
refer to local codes. Provide a small drip pad of stone, mortar,
wood, or metal to protect the roof against possible damage.
If condensate is piped into the building drainage system, pitch
the drain line away from the unit a minimum of 1/8" per foot.
The drain line must penetrate the roof external to the unit.
Refer to local codes for additional requirements. Sealed drain
lines require venting to provide proper condensate flow.
Periodically clean to prevent microbial growth/algae buildup
from plugging the drain and causing the drain pan to overflow.
Clean drain pans to prevent the spread of disease. Cleaning
should be performed by qualified personnel.
Drain pans must be cleaned periodically . Material in
uncleaned drain pans can cause disease . Cleaning
should be performed by qualified personnel.
Figure 5: Condensate Drain Connection
Static Pressure (P)
at the Drain Pan
www.DaikinApplied.com
Econo 100% OA
175 160
250 300
Curb Size (Height)
14 Inch 24 Inch
156 230
200 295
WARNING

Damper Assemblies

The optional damper assemblies described in this section
are ordered with factory-installed actuators and linkages.
The following sections describe the operation and linkage
adjustment of the factory option.
Figure 6: Damper Assembly
Linkage
Economizer Dampers
As the single actuator modulates, the outside air dampers
open, the return air dampers close, and the exhaust air exits
the unit through the gravity relief dampers.
The economizer comes with manually adjustable linkage
(Figure 6). The damper is set so that the crank-arm moves
through a 90-degree angle to bring the economizer dampers
from full open to full close. Mechanical stops are placed in the
crank-arm mounting bracket. Do not remove stops. Driving the
crank-arm past the stops results in damage to the linkage or
damper .
Outdoor Air Dampers (0% to 30%)
These dampers are intended to remain at a fixed position
during unit operation, providing fresh air quantities from 0 to
30% of the total system airflow, depending on the damper
setting.
9
FPID: 437300-3-7B-01
M I
eChanICal nsTallaTIon
Actuator
IM 1125-6 • REBEL ROOFTOPS