IM 782-12 • DESTINY AIR HANDLERS 8
www.DaikinApplied.com
Installation
Panels and Doors
DANGER
Hazardous moving parts, high static pressure, and/or high voltage. Can
cause severe injury or death. Disconnect and lock ALL electric power OFF
before entering or servicing unit. Unit may employ multiple power supplies
and/or remote disconnects.
Secure drive sheaves to prevent motors and fan from free wheeling.
When leaving the unit, use screw or door handle locking mechanism
provided to secure access panel closed and prevent unintentional entry.
Panel Removal
Destiny air handlers have pocket pull handles in alternate
sections that allow side panels to be easily removed and
handled. To gain access through a side panel, remove the
fasteners along the sides of the panel and lift the panel off using
the pocket pull handle. If the panel you are accessing does not
have a pocket pull handle, remove an adjoining panel with a
pocket pull handle and push the panel out from inside the unit.
Fan Section Doors
1.
Use a flat head screwdriver and rotate the screw 1/4 turn
as shown in
.
2. Rotate door handle 1/4 turn and open the door.
Figure 5: Panel Removal
Figure 6: Fan Section Doors
Actuators
CAUTION
Maximum damper rotation is 70°. Maximum shaft torque is 205 in.-lb.
Greater rotation or torque can cause equipment damage.
The factory-mounted actuator has been initially adjusted in
the factory. Power and control wiring, as well as fine-tuning
adjustment, is to be performed in the field.
The installing contractor is responsible for the mounting of all
field-installed actuators. An actuator mounting plate is provided
on the shaft side of the damper frame to accommodate
many actuators. However, due to the number of options, size
variations, and arrangements available, some actuators may
require alternate field provided mounting hardware. Provide
proper support for the actuator to avoid excessive stress in the
cabinet, linkage, or damper shafts.
Fresh air and return air dampers can be linked together and
driven from the same actuator if the dampers are the same
size. If the dampers are different sizes, they must be driven by
separate actuators and controlled appropriately.
A typical rotary electric actuator can handle up to 40 square
feet of damper. For pneumatic actuators, allow 5 in.-lb. per
square foot of damper area.
For good air flow control, adjust the linkage so that the damper
blades do not open beyond 70°. Opening a damper blade
beyond 70° will have little effect on unit performance.
Do not “over-close” the low-leak damper blades as the blades
may lock up if the accompanying seal goes over the center of
the adjoining blade. Instead, close the damper blades until the
edge seal just lightly contacts the adjoining blade.
Figure 7: Factory Mounted Actuator
