Condensate Drain; Compressors; Fixed Outdoor Air Damper - York DC180 Installation Manual

5120416-XIM-C-0216
Fixed Outdoor Air Intake Damper
This damper is shipped inside the return air compartment. It is
completely assembled and ready for installation. A damper
baffle inside of the hood is adjustable to provide variable
amounts of outdoor air intake on units that are not provided with
an economizer or a motorized damper option. Refer to the
Fixed Outdoor Damper Figure 11.
Gasketing and mounting screws are provided in a parts bag
attached to the hood assembly. Apply gasketing to the three
flange surfaces on the hood prior to installing the hood. Extend
gasketing 1/4 inch beyond the top and bottom of the two side
flanges to insure adequate sealing.
Adjusting the damper to the desired air flow may be done
before mounting the hood into position or after installation by
removing the front hood panel or the screen on the bottom of
the hood. Damper baffle in position 1 will allow approximately
10% outdoor air flow, position 2 approximately 15% and, to
allow approximately 25%, remove the damper baffle.
On units with bottom return air application install the damper
assembly over the opening in the side return air access panel.
Remove and discard the opening cover and the covering over
the hood mounting holes (used for shipping) before installing.
Secure with the screws provided.
On units with side return air applications, install the damper
assembly on the return air ductwork as close to the unit as
possible. Cut an opening 16 inches high by 18 inches wide in the
ductwork to accommodate the damper. Using the holes in the
hood flanges as a template, drill 9/64 inch diameter (#26 drill)
holes into the ductwork and secure with the screws provided.
If outdoor air intake will not be required on units with
bottom return air applications, the damper assembly
should still be mounted on the side return air access
panel, per the instructions above, to insure moisture is
not drawn into the unit during operation. The covering
over the mounting holes only need be removed. Do not
remove the opening cover.
14
Side Supply
Air Access
Panel
*
Damper
Baffle
Hood
Side Return Air
Screen
Access Panel
1
2
* Gasketed
Rear View
Flange
Figure 11: Fixed Outdoor Air Damper

Condensate Drain

Plumbing must conform to local codes. Use a sealing compound
on male pipe threads. Install a condensate drain line from the
one-inch NPT female connection on the unit to an open drain.
NOTE: The condensate drain operates in a negative pressure
in the cabinet. The condensate drain line MUST be
trapped to provide proper drainage. See Figure 12.
Unit Condensate
Connection
3" Min.
2"
Drain
Plug
Figure 12: Condensate Drain

Compressors

The compressor used in this product is specifically designed to
operate with R-407C Refrigerant and cannot be interchanged.
UNIT CHARGED WITH NITROGEN
TO PROPERLY START THIS EQUIPMENT, VENT THE
NITROGEN AND VACUUM THE SYSTEM(S) BELOW
500 MICRONS.
WEIGH IN THE CORRECT AMOUNT OF
REFRIGERANT BEFORE STARTING THE UNIT.
Outdoor Air
Opening Cover
Base
Pan
Base
Rails
Johnson Controls Unitary Products