Damper Assemblies - Daikin Maverick II MPS062E Installation And Maintenance Manual

Damper Assemblies

The optional damper assemblies described in this section
normally are ordered with factory-installed actuators and
linkages. The following sections describe operation and
linkage adjustment of the factory-installed option.
Economizer Dampers
Outside air intake is provided on both sides of the unit, and the
return air path is at the center of the damper set. As the single
actuator modulates the outside air dampers open, the return
air dampers close. Exhaust air exits the unit through the gravity
relief dampers provided at the end of the economizer section.
The damper is set so that the crankarm moves through a 90
degree angle to bring the economizer dampers from full-open
to full-close (see Figure 27). Access to the actuator and linkage
is from the filler section. Mechanical stops are placed in the
crankarm mounting bracket. Do not remove stops. Driving
the crankarm past the stops results in damage to the linkage
or damper. The unit ships with a shipping bolt securing the
linkage crankarm. Remove shipping bolt before use.
NOTE: For good airflow control, adjust linkages so damper
blades do not open beyond 70 degrees. Opening a
damper blade beyond 70 degrees has little effect on
its airflow.
Do not "overclose" low leak damper blades. The edge
seal should just lightly contact the adjoining blade.
The blades will lock up if they are closed so far the
seal goes over center.
IM 991-2 • MAVERICK II ROOFTOP
Figure 27: Damper Adjustment
24
Mechanical Installation
Airflow
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