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035-17233-000-C-0702
Unitary Products 3
D 1 HG 180 E 180 25 EC
GENERAL
YORK Model DHG units are single package high efficiency
gas-fired central heating furnaces with cooling unit designed
for outdoor installation on a rooftop or a slab.
The units are completely assembled on rigid, permanently
attached base rails. All piping, refrigerant charge, and electri-
cal wiring is factory installed and tested. The units require
electric power, gas connection, duct connections, installation
of combustion air inlet hood, flue gas outlet hoods and fixed
outdoor air intake damper (units without economizer or
motorized damper option only) at the point of installation.
The gas-fired heaters have aluminized-steel tubular heat
exchangers and spark ignition with proven pilot.
.
SAFETY CONSIDERATIONS
Installer should pay particular attention to the words: NOTE,
CAUTION, and WARNING. Notes are intended to clarify or
make the installation easier. Cautions are given to prevent
equipment damage. Warnings are given to alert installer that
personal injury and/or equipment damage may result if instal-
lation procedure is not handled properly.
Due to system pressure, moving parts and electrical compo-
nents, installation and servicing of air conditioning equipment
can be hazardous. Only qualified, trained, service personnel
should install, repair, maintain or service this equipment.
Observe all precautions in the literature, on labels and tags
accompanying the equipment whenever working on air condi-
tioning equipment. Be sure to follow all other safety precau-
tions that apply.
Wear safety glasses and work gloves, and follow all safety
codes. Use a quenching cloth and have a fire extinguisher
available for all brazing operations.
TABLE 1: PRODUCT NOMENCLATURE
Model #
Model Number
Description
Options
D
Product Category
D = Air Cond., Single Package
1
Product Generation
1 = 1st Generation
HG
Product Identifier
HG = Gas/Electric
180
Nominal Cooling Capacity
180 = 15 Tons 240 = 20 Tons
E
Factory Installed Heat
A = No Heat
E = Electric Heat
N=NaturalGas
018
Nominal Heating Capacity
018 = 18 kW 054 = 54 kW
036 = 36 kW 072 = 72 kW
25
Voltage Code
25 = 208/230-3-60
58 = 575-3-60
46 = 460-3-60
EC
Factory Installed
Option Code
EC = Single Input Economizer DK = Dual Input Economizer
FD = Sing. Input Economizer w/ Power
Exhaust
CF = Dual Input Economizer with Power
Exhaust
BG = Motorized Outdoor Air Damper
FOR YOUR SAFETY IF YOU SMELL GAS:
a. Open windows.
b. Don’t touch electrical switches; do not use any
phones in the area of the gas leak.
c. Extinguish any open flame.
d. Immediately call your gas supplier from another
location. Follow your gas supplier’s instructions.
e. If you cannot reach your gas supplier, call the fire
departments.
This product must be installed in strict compliance
with the enclosed installation instructions and any
applicable local, state, and national codes includ-
ing, but not limited to, building, electrical and
mechanical codes.