York DM 300 - Manual (Page 30)

262259-YTG-E-1008
30 Johnson Controls Unitary Products
FIGURE 4 - UNIT DIMENSIONS & CLEARANCES 15, 20 & 25 TON
TABLE 26: UTILITIES ENTRY DATA
HOLE
OPENING SIZE
(DIA.)
USED FOR
A
1-1/8” KO
Control Wiring
Side
3/4” NPS (Fem.) Bottom
B
3-5/8” KO
Power Wiring
Side
3” NPS (Fem.) Bottom
C 2-3/8” KO Gas Piping (Front) 1
1. One-inch gas piping NPT required.
D 1-11/16” Hole Gas Piping (Bottom) 1, 2
2. Opening in the bottom of the unit can be located by the slice in
the insulation.
NOTE: All entry holes should be field sealed to prevent rain
water entry into the building.
RETURN
AIR
SUPPLY
AIR
BOTTOM SUPPLY
AND RETURN
AIR OPENINGS
(See Note)
(B)
POWER WIRING
ENTRY
(A)
CONTROL WIRING
ENTRY
NOTE:
For curb mounted units, refer to the curb hanger
dimensions of the curb for the proper size of the
supply and return air duct connections.
UNIT BASE WITH RAILS
Shown separately to illustrate
Bottom Duct openings, Power
and Gas Piping Connection
locations
12-1/2"
9-1/4"
8-1/8"
9-3/4"
3-3/4"
(B)
POWER WIRING
ENTRY
(A)
CONTROL WIRING
ENTRY
92"
CONDENSER
COILS
COIL
GUARD
COMPRESSOR
ACCESS
ECONOMIZER / MOTORIZED DAMPER,
FIXED OUTDOOR INTAKE AIR AND
POWER EXHAUST RAIN HOODS
(See detail "Y")
FIELD-SUPPLIED
DISCONNECT SWITCH
LOCATION
BLOWER
COMPARTMENT
ACCESS
(Auxiliary)
DOT PLUG
(For pressure
Drop Reading)
FRONT
VIEW
CONTROL BOX
ACCESS
21"
5"
9-3/4"
11-1/2"
2-3/4" 21-1/2"
33"
35"
5-7/8"
46-5/8"
7-1/8"
6-3/8"
VENT AIR
OUTLET
HOODS
COMBUSTION
AIR INLET
HOOD
GAS HEAT
ACCESS
(C)
GAS SUPPLY
ENTRY
46-5/8"
11-1/8"
(D)
GAS SUPPLY
ENTRY
12-1/4"(15 T
ON)
35-1/4” (20, 25
TON)
125-1/4"(15 T
ON)
136-1/4” (20, 25
TON)
)
48-5/8"(15 TON)
52-5/8" (20, 25 TON)
ELECTRIC/
BLOWER ACCESS
(Location Of
Optional VFD)
BLOWER MOTOR ACCESS
(Location Of Optional
VFD Bypass)