5120410-XIM-B-0216
Johnson Controls Unitary Products
17
Figure 16: Return Downflow Plenum With Panel
Figure 17: Discharge Panel In Place
Side Panels
Units are shipped with side panels to cover the area where an
economizer or motorized damper may be installed. These
panels must be saved and used as tops for the Economizer rain
hoods (See Figure 19)
Figure 18: Save Side Panels For Economizer Hood Tops
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 19.
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.
Figure 19: Condensate Drain
Compressors
The compressor used in this product is specifically designed to
operate with R-407C Refrigerant and cannot be interchanged.
Filters
Two-inch filters are supplied with each unit. One-inch filters may
be used with no modification to the filter racks. Filters must
always be installed ahead of evaporator coil and must be kept
clean or replaced with same size and type. Dirty filters reduce
the capacity of the unit and result in frosted coils or safety
shutdown. Refer to physical data tables, for the number and
size of filters needed for the unit. The unit should not be
operated without filters properly installed.
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.
Do not loosen compressor mounting bolts.
3" Minimum
