Condensate Drain; Compressors; Side Panels With Hole Plugs; Return Downflow Plenum With Panel - York ZS Series Installation Manual

518676-BIM-C-0610
Duct Covers
Units are shipped with the side duct openings covered and a
covering over the bottom of the unit. For bottom duct
application, no duct cover changes are necessary. For side
duct application, remove the side duct covers and install over
the bottom duct openings. The panels removed from the side
duct connections are designed to be reused by securing each
panel to its respective downflow opening. But keep in mind that
the supply panel is installed with the painted surface UP, facing
the heat exchanger, while the return panel is installed with the
painted surface DOWN, facing the downflow duct opening. The
supply panel is secured with the bracket (already in place from
the factory) and two screws. It's a snug fit for the panel when
sliding it between the heat exchanger and unit bottom, but there
is room. The return panel is secured with four screws.
When fastening ductwork to side duct flanges on unit,
insert screws through duct flanges only. DO NOT insert
screws through casing. Outdoor ductwork must be
insulated and water-proofed.
Figure 17: Side Panels With Hole Plugs
NOTE: Orientation. Panel is "insulation" side up.
Figure 18: Return Downflow Plenum With Panel
16
Figure 19: Discharge Panel In Place

Condensate Drain

The side condensate drain is reversible and maybe re-oriented to
the rear of the cabinet to facilitate condensate piping. A
condensate drain connection is available through the base pan
for piping inside the roof curb. Trap the connection per Figure 20.
The trap and drain lines should be protected from freezing.
Plumbing must conform to local codes. Use a sealing compound
on male pipe threads. Install condensate drain line from the 3/4
inch NPT female connection on the unit to an open drain.
OPTIONAL COIL
GUARD
3" Minimum
Figure 20: Condensate Drain

Compressors

The scroll compressor used in this product is specifically
designed to operate with R-410A Refrigerant and cannot be
interchanged.
This system uses R-410A Refrigerant which operates at
higher pressures than R-22. No other refrigerant may be
used in this system.
The compressor also uses a polyolester (POE oil), Mobil 3MA
POE. This oil is extremely hygroscopic, meaning it absorbs water
readily. POE oil can absorb 15 times as much water as other oils
designed for HCFC and CFC refrigerants. Take all necessary
precautions to avoid exposure of the oil to the atmosphere.
Johnson Controls Unitary Products