York Sunline 2000 Quick start guide

TECHNICAL GUIDE
SINGLE PACKAGE
GAS/ELECTRIC UNITS AND
SINGLE PACKAGE AIR CONDITIONERS
DM300 CONSTANT VOLUME
25 NOMINAL TONS
(WORLD 50 HZ)
SUNLINE TM 2000
This product was
manufactured in a
plant whose quality
system is certified/
registered as being
in conformity with
ISO9001.
1
036-21060-004-A-1102
FOR DISTRIBUTION USE ONLY - NOT TO BE USED AT POINT OF RETAIL SALE
®
DESCRIPTION
SunlineTM 2000 series convertible package rooftop models have two
independent refrigerant circuits for efficient part load operation.
Although the units are primarily designed for curb mounting on a roof,
they can also be slab-mounted at ground level or set on steel beams
above a finished roof.
Cooling only, cooling with gas heat and cooling with electric heat
models are available with wide variety of factory-mounted options
and field-installed accessories to make them suitable for almost
every application.
All units are self-contained and assembled on full perimeter base
rails with holes in the four corners for overhead rigging.
Every unit is completely piped, wired, charged and tested at the fac-
tory to simplify the field installation and to provide years of depend-
able operation. Powder paint cabinets provide an exceptionally
durable finish with the 750 hour salt spray process per ASTM-B117
test standard.
All models (including those with an economizer) are suitable for
either bottom or horizontal duct connections. Models with power
exhaust are suitable for bottom duct connections only. For bottom
duct, remove the sheet metal panels from the supply and return air
openings through the base of the unit. For horizontal duct, replace
the supply and return air panels on the rear of the unit with a side
duct flange accessory.
All models are available with three different outdoor air damper
options:
•Single enthalpy economizer
•Single enthalpy economizer with power exhaust
•Motorized outdoor air damper
The enthalpy system contains one sensor that monitors the outdoor
air and determines when the air is cool enough and dry enough to
provide "free" cooling.
The rainhood is painted to match the basic unit and must be field-
assembled before installing.
Power exhaust is not available as a field installed option.

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2Unitary Products Group
TABLE OF CONTENTS
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
FACTORY-INSTALLED OPTIONS . . . . . . . . . . . . . . 3
FIELD-INSTALLED ACCESSORIES. . . . . . . . . . . . . 4
PRODUCT NOMENCLATURE . . . . . . . . . . . . . . . . . 6
LIST OF FIGURES
Fig. # Pg. #
1 FIELD WIRING - DM ELECTRIC/ELECTRIC AND
GAS/ELECTRIC UNITS . . . . . . . . . . . . . . . . . . . . . 18
2 UNIT DIMENSIONS - DM COOL & COOL/ELECTRIC
HEAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3 UNIT DIMENSIONS - DM GAS HEAT . . . . . . . . . . . . 19
4 ACCESSORY SIDE SUPPLY AND RETURN AIR
OPENINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
5 UNIT WITH RAIN HOOD . . . . . . . . . . . . . . . . . . . . . . 20
6 CENTER OF GRAVITY . . . . . . . . . . . . . . . . . . . . . . . 20
7 ROOF CURB DIMENSIONS (ALL MODELS) . . . . . . 21
8 ROOF CURB BENEFITS . . . . . . . . . . . . . . . . . . . . . . 21
9 UNIT CURB AND APPLICATIONS . . . . . . . . . . . . . . 21
10 TYPICAL APPLICATION . . . . . . . . . . . . . . . . . . . . . . 22
11 TYPICAL ROOF-TOP INSTALLATION . . . . . . . . . . . 22
LIST OF TABLES
Tbl. # Pg. #
1 CAPACITY RATINGS - COOLING . . . . . . . . . . . . . . 12
2 CAPACITY RATINGS - GAS HEAT. . . . . . . . . . . . . . 12
3 COOLING CAPACITIES - 87 KW (DM300) . . . . . . . . 12
4 COOLING CAPACITIES - 25 TON (DM300) CFM . . 13
5 BLOWER PERFORMANCE - DM300 . . . . . . . . . . . . 14
6 STATIC RESISTANCES - EXTERNAL STATIC
PRESSURE DROP. . . . . . . . . . . . . . . . . . . . . . . . . 15
7 BLOWER MOTOR AND DRIVE DATA . . . . . . . . . . . 15
8 PHYSICAL DATA. . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
9 ELECTRICAL DATA - COOLING ONLY UNITS AND
UNITS WITH GAS HEAT . . . . . . . . . . . . . . . . . . . . 16
10 ELECTRICAL DATA - UNITS WITH ELECTRIC
HEAT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

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DESCRIPTION (Cont’d.)
A fixed outdoor air intake assembly is shipped in the return air
compartment of all units ordered without an economizer or
motorized outdoor air damper option. The assembly includes
a rain hood with a damper that can be set for 10, 15 or 25%
outdoor air. With bottom duct connections, the intake damper
assembly should be mounted over the opening in the return
air panel. With horizontal ductwork, it should be mounted on
the return air duct. All supply air blowers are equipped with a
belt drive that can be adjusted to meet the exact require-
ments of the job.
All compressors include internal pressure relief. Every refrig-
erant circuit includes an expansion valve, a liquid line filter-
drier, a discharge line high pressure switch and a suction line
with a freezestat and low pressure/loss of charge switch, to
protect all system components.
Compressors and electric heater elements carry an additional
4-year warranty. Aluminized steel tubular heat exchangers
carry an additional 9-year warranty.
•Simplicity™ Controls - Simplicity™ control boards
have standardized a number of features previously avail-
able only as options or by utilizing additional controls.
•Low Ambient - An integrated low-ambient control
allows all units to operate in the cooling mode down
to 0ºF outdoor ambient without additional assis-
tance. Optionally, the control board can be pro-
grammed to lockout the compressors when the
outdoor air temperature is low or when free cooling
is available.
•Anti-Short Cycle Protection - To aid compressor
life, an anti-short cycle delay is incorporated into the
standard controls. Compressor reliability is further
ensured by programmable minimum run times. For
testing, the anti short cycle delay can be temporarily
overridden with the push of a button.
•Fan Delays - Fan on and fan off delays are fully pro-
grammable. Furthermore, the heating and cooling
fan delay times are independent of one another. All
units are programmed with default values based
upon their configuration of cooling and heat.
•Safety Monitoring - The control board monitors the
high and low-pressure switches, the freezestats, the
gas valve, if applicable, and the temperature limit
switch on gas and electric heat units. The unit con-
trol board will alarm on ignition failures, compressor
lockouts and repeated limit switch trips.
•Nuisance Trip Protection and Strikes - To prevent
nuisance trouble calls, the control board uses a
“three times, you’re out” philosophy. The high and
low-pressure switches and the freezestats must trip
three times within two hours before the unit control
board will lock out the associated compressor.
•On Board Diagnostics - Each alarm will energize a
trouble light on the thermostat, if so equipped, and
flash an alarm code on the control board LED. Each
high and low-pressure switch alarm as well as each
freezestat alarm has its own flash code. The control
board saves the five most recent alarms in memory,
and these alarms can be reviewed at any time.
Alarms and programmed values are retained
through the loss of power.
All gas heat models are built with two heating sections for two
equal stages of capacity control. Each section includes a
durable heat exchanger with aluminized steel tubes, a redun-
dant gas valve, spark ignition, power venting, an ignition
module for 100% shut-off and all of the safety controls
required to meet the latest ANSI standards.
The gas supply piping can be routed into the heating com-
partment through a hole in the base pan of the unit or through
a knockout in the piping panel on the front of the unit.
All electric heat models are wired for a single power source
and include a bank of nickel chromium elements mounted at
the discharge of the supply air blower to provide a high veloc-
ity and uniform distribution of air across the heating elements.
Every element is fully protected against excessive current
and temperature by fuses and two thermal limit switches.
The power supply wiring can be routed into the control box
through a threaded pipe connection in the base pan of the
unit. It can also be routed knockout in the wiring panel on the
front of the unit.
All models are available with factory mounted BAS Control.
Options are Novar, Honeywell, Johnson, or CPC.
All internal factory wiring is color coded and numbered for
ease in servicing and troubleshooting.
FACTORY-INSTALLED OPTIONS
•SINGLE INPUT ELECTRONIC ENTHALPY ECONO-
MIZERS - Includes a slide-in / plug-in damper assembly
with fully modulating spring-return motor actuator capa-
ble of introducing up to 100% outdoor air with nominal
1% leakage type dampers.
The enthalpy system contains one sensor that monitors
the outdoor air and determines when the air is cool
enough and dry enough to provide free cooling.

036-21060-004-A-1102
4Unitary Products Group
The rainhood is painted to match the basic unit and must
be field-assembled before installing.
Power exhaust is not available as a field installed
option.
•POWER EXHAUST - Our single economizer options are
available with power exhaust. Whenever the outdoor air
intake dampers are opened for free cooling, the exhaust
fan will be energized to prevent the conditioned space
from being over-pressurized during economizer opera-
tion.
The exhaust fan, motor and controls are installed and
wired at the factory. The rain hood and the back-draft
damper need to be assembled and installed in the field.
The power exhaust option can only be used on bot-
tom duct configurations.
•MOTORIZED OUTDOOR AIR INTAKE DAMPER -
Includes a slide-in / plug-in damper assembly with a 2-
position, spring return motor actuator which opens to a
pre-set position whenever the supply air blower is oper-
ating and will drive fully closed when the blower unit
shuts down.
The rain hood is painted to match the basic unit and
must be field assembled before installing.
•PHENOLIC COATED EVAPORATOR AND CON-
DENSER COILS - Special coating process that utilizes
Technicoat 10-1" processes. Coating is applied by total
immersion of the complete coil for maximum protection.
•ELECTRIC HEATERS wired for single point power sup-
ply. These nickel chromium heater elements are pro-
vided with limit and automatic reset capability to prevent
operation at excessive temperatures.
•FILTER OPTIONS - Standard units are shipped with 2”
throw-away filters installed. 2” pleated and 4” pleated fil-
ters are offered as a factory installed option.
•BAS - See “Additional Options” section in the product
nomenclature.
•SMOKE DETECTORS - (supply air & return air) The
smoke detectors stop operation of the unit by interrupting
power to the control board if smoke is detected within the
air compartment.
•COIL GUARD - Customers can purchase a coil guard kit
to protect the condenser coil from damage. This is not a
hail guard kit.
•STAINLESS STEEL HEAT EXCHANGER - For applica-
tions in corrosive environments, this option provides a
full stainless steel heat exchanger assembly.
• PHASE MONITORS - Designed to prevent unit damage.
The phase monitor will shut the unit down in an out-of-
phase condition.
• DIRTY FILTER SWITCH - This kit includes a differential
pressure switch that energizes the fault light on the unit
thermostat, indicating that there is an abnormally high
pressure drop across the filters. Factory installed option
or field installed accessory.
• HINGED FILTER DOOR/”TOOLESS” BLOWER AND
ACCESS PANELS (not hinged) - This option allows for
easy access and maintenance.
NOTE:Knobs are shipped separately within the unit to
prevent shipping damage. These must be field
installed for tool-less operation.
FIELD-INSTALLED ACCESSORIES
•SINGLE INPUT ELECTRONIC ENTHALPY ECONO-
MIZERS - Includes a slide-in / plug-in damper assembly
with fully modulating spring-return motor actuator capa-
ble of introducing up to 100% outdoor air with nominal
1% leakage type dampers.
The enthalpy system contains one sensor that monitors
the outdoor air and determines when the air is cool
enough and dry enough to provide free cooling.
The rainhood is painted to match the basic unit and must
be field-assembled before installing.
Power exhaust is not available as a field installed option.
•MOTORIZED OUTDOOR AIR INTAKE DAMPER -
Includes a slide-in / plug-in damper assembly with a 2-
position, spring return motor actuator which opens to
some pre-set position whenever the supply air blower is
operating and will drive fully closed when the blower unit
shuts down.
The rain hood is painted to match the basic unit and
must be field assembled before installing.
Power exhaust is not available as a field installed option.
•ROOF CURBS - Fourteen-inch high roof curbs provide a
water-tight seal between the unit and the finished roof.
These full perimeter curbs meet the requirements of the
National Roofing Contractors Association (NRCA) and
are shipped knocked-down for field assembly.
They're designed to fit inside the base rails of the unit
and include both a wood nailing strip and duct hanger
supports.
•HIGH ALTITUDE NATURAL GAS - Burner orifices and
pilot orifices are provided for proper furnace operation at
altitudes up to 6,000 feet.
•PROPANE - Burner orifices, pilot orifices and gas valve
parts are provided to convert a natural gas furnace to
propane.
•HIGH ALTITUDE PROPANE - Burner orifices and pilot
orifices are provided for proper furnace operation at alti-
tudes up to 6,000 feet. This accessory supplements the
basic propane conversion kit.

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Unitary Products Group 5
•SIDE DUCT FLANGES - One-inch flanges replace the
supply and return air panels on the rear of the unit to
accommodate horizontal duct connections. These
flanges can also be used individually for bottom supply/
horizontal return or horizontal supply/bottom return. They
cannot be used on units with power exhaust.
•BAROMETRIC RELIEF DAMPER - This damper acces-
sory can be used to relieve internal building air pressure
on units with an economizer without power exhaust. This
accessory includes a rain hood, a bird screen and a fully
assembled damper. With bottom duct connections, the
damper should be mounted over the opening in the
return air panel. With horizontal ductwork, the accessory
should be mounted on the return air duct.
•ENTHALPY ACCESSORY CONTROL KIT - This kit
contains the required components to convert a single
enthalpy economizer to dual enthalpy.
•BURGLAR BARS - Mount in the supply and return
openings to prevent entry into the duct work.
•FLUE EXHAUST EXTENSION KIT - In locations with
wind or weather conditions which may interfere with
proper exhausting of furnace combustion products, this
kit can be installed to prevent the flue exhaust from
entering nearby fresh air intakes.
•WOOD SKID - Allows unit to be handled with 90” forks.
•CO2SENSOR - Senses CO2levels and automatically
overrides the economizer when levels rise above the
present limits.
•COIL GUARD - Customers can purchase a coil guard kit
to protect the condenser coil from damage. This is not a
hail guard kit. Model 1CG0415.
•PHASE MONITORS - Designed to prevent unit damage.
The phase monitor will shut the unit down in an out-of-
phase condition.

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6Unitary Products Group
PRODUCT NOMENCLATURE
25T Sunline™ 2000 Model Number Nomenclature
D M 300 N 24 A 7 A AA 1
Product Category
D = Air Cond., Single Package
Product Generation
1 = First Generation
Product Identifier
M = R-22 Standard Efficiency
Installation Options Additional Options
A = No Options Installed (See Next Page)
Voltage B = Option 1
C = Option 2
7 = 380/415-3-50
D = Options 1 & 2
Nominal Cooling
Capacity - MBH
E = Option 3
300 = 25 Ton
F = Options 4
G = Options 1 & 3
H = Options 1 & 4
J = Options 1, 2 & 3
K = Options 1, 2, & 4
A= Std Motor/Drive
L = Options 1,3 & 4
B = Std Mtr/Drive/Single Input Econo
M = Options 1, 2, 3, & 4
C = Std Mtr/Drive/Single Input Econo/Power Exhaust*
N = Options 2 & 3
D = Std Mtr/Drive/Motorized Damper
P = Options 2 & 4
Heat Type & Nominal Heat Capacity
F = Std Mtr/Drive/4" Filters
Q = Options 2, 3, & 4
C00 = Cooling Only. No field installed electric heat
G = Std Mtr/Drive/4" Filters/Single Input Econ
R = Options 3 & 4
Gas Heat Options
H = Std Mtr/Drive/4" Filters/Single Input Econ/Power Exhaust*
S = Option 5
N24 = 240 MBH Output Aluminized Steel
L = Std Mtr/Drive/BAS Ready Econ (No BAS Controller) w/2" Pleated Filters
T = Options 1 & 5
M = Std Mtr/Drive/BAS Ready Econ (No BAS Controller)/Power Exhaust w/2" Pleated Filters*
U = Options 1, 3, & 5
V = Options 1, 4, & 5
W = Options 1, 3, 4, & 5
Electric Heat Options
X = Options 3 & 5
E18 = 18 KW
Y = Options 4 & 5
E36 = 36 KW
Z = Options 3, 4, & 5
E54 = 54 KW
Options
E72 = 72 KW
1 = Disconnect
2 = Non-Pwr'd Conv Oultet
3 = Smoke Detector S.A.
4 = Smoke Detector R.A.
5 = Pwr'd Conv. Outlet
Airflow
York Brand
N32= 320 MBH Output Aluminized Steel

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Unitary Products Group 7
PRODUCT NOMENCLATURE - Continued
25T Sunline™ 2000 Model Number Nomenclature
Additional Options
AA None
AB Phase Monitor
AC Coil Guard
AD Dirty Filter Switch
AE Phase Monitor & Coil Guard
AF Phase Monitor & Dirty Filter Switch
AG Coil Guard & Dirty Filter Switch
AH Phase Monitor, Coil Guard, & Dirty Filter Switch
BA Hinged Filter Door & Tooless Access Panels
BB Phase Monitor, Hinged Filter Door & Tooless Access Panels
BC Coil Guard, Hinged Filter Door & Tooless Access Panels
BD Dirty Filter Switch, Hinged Filter Door & Tooless Access Panels
BE Phase Monitor & Coil Guard, Hinged Filter Door & Tooless Access Panels
BF Phase Monitor & Dirty Filter Switch, Hinged Filter Door & Tooless Access Panels
BG Coil Guard & Dirty Filter Switch, Hinged Filter Door & Tooless Access Panels
BH Phase Monitor, Coil Guard, & Dirty Filter Switch, Hinged Filter Door & Tooless Access Panels
CA CPC Controller with Dirty Filter Switch & Air Proving Switch
CB CPC Controller, DFS, APS & Phase Monitor
CC CPC Controller, DFS, APS & Coil Guard
CD CPC Controller, DFS, APS, Phase Monitor, & Coil Guard
CE CPC Controller, DFS, APS & Technicoat Cond. Coil
CF CPC Controller, DFS, APS, Technicoat Cond. Coil, & Phase Monitor
CG CPC Controller, DFS, APS, Technicoat Cond. Coil, & Coil Guard
CH CPC Controller, DFS, APS, Technicoat Cond. Coil, Phase Monitor, & Coil Guard
CJ CPC Controller, DFS, APS & Technicoat Evap. Coil
CK CPC Controller, DFS, APS, Technicoat Evap. Coil, & Phase Monitor
CL CPC Controller, DFS, APS, Technicoat Evap. Coil, & Coil Guard
CM CPC Controller, DFS, APS, Technicoat Evap. Coil, Phase Monitor, & Coil Guard
CN CPC Controller, DFS, APS & Technicoat Evap. & Cond Coils
CP CPC Controller, DFS, APS, Technicoat Evap. & Cond Coils, & Phase Monitor
CQ CPC Controller, DFS, APS, Technicoat Evap. & Cond Coils, & Coil Guard
CR CPC Controller, DFS, APS, Technicoat Evap. & Cond Coils, Phase Monitor, & Coil Guard
DA CPC Controller with Dirty Filter Switch & Air Proving Switch, Hinged Filter Door & Tooless Access Panels
DB CPC Controller, DFS, APS & Phase Monitor, Hinged Filter Door & Tooless Access Panels
DC CPC Controller, DFS, APS & Coil Guard, Hinged Filter Door & Tooless Access Panels
DD CPC Controller, DFS, APS, Phase Monitor, & Coil Guard, Hinged Filter Door & Tooless Access Panels
DE CPC Controller, DFS, APS & Technicoat Cond. Coil, Hinged Filter Door & Tooless Access Panels
DF CPC Controller, DFS, APS, Technicoat Cond. Coil, & Phase Monitor, Hinged Filter Door & Tooless Access Panels
DG CPC Controller, DFS, APS, Technicoat Cond. Coil, & Coil Guard, Hinged Filter Door & Tooless Access Panels

036-21060-004-A-1102
8Unitary Products Group
DH CPC Controller, DFS, APS, Technicoat Cond. Coil, Phase Monitor, & Coil Guard, Hinged Filter Door & Tooless Access Panels
DJ CPC Controller, DFS, APS & Technicoat Evap. Coil, Hinged Filter Door & Tooless Access Panels
DK CPC Controller, DFS, APS, Technicoat Evap. Coil, & Phase Monitor, Hinged Filter Door & Tooless Access Panels
DL CPC Controller, DFS, APS, Technicoat Evap. Coil, & Coil Guard, Hinged Filter Door & Tooless Access Panels
DM CPC Controller, DFS, APS, Technicoat Evap. Coil, Phase Monitor, & Coil Guard, Hinged Filter Door & Tooless Access Panels
DN CPC Controller, DFS, APS & Technicoat Evap. & Cond Coils, Hinged Filter Door & Tooless Access Panels
DP CPC Controller, DFS, APS, Technicoat Evap. & Cond Coils, & Phase Monitor, Hinged Filter Door & Tooless Access Panels
DQ CPC Controller, DFS, APS, Technicoat Evap. & Cond Coils, & Coil Guard, Hinged Filter Door & Tooless Access Panels
DR CPC Controller, DFS, APS, Technicoat Evap. & Cond Coils, Phase Monitor, & Coil Guard, Hinged Filter Door & Tooless Access Panels
EA Johnson UNT Controller with Dirty Filter Switch & Air Proving Switch, Hinged Filter Door & Tooless Access Panels
EB Johnson UNT Controller, DFS, APS & Phase Monitor, Hinged Filter Door & Tooless Access Panels
EC Johnson UNT Controller, DFS, APS & Coil Guard, Hinged Filter Door & Tooless Access Panels
ED Johnson UNT Controller, DFS, APS, Phase Monitor, & Coil Guard, Hinged Filter Door & Tooless Access Panels
EE Johnson UNT Controller, DFS, APS & Technicoat Cond. Coil, Hinged Filter Door & Tooless Access Panels
EF Johnson UNT Controller, DFS, APS, Technicoat Cond. Coil, & Phase Monitor, Hinged Filter Door & Tooless Access Panels
EG Johnson UNT Controller, DFS, APS, Technicoat Cond. Coil, & Coil Guard, Hinged Filter Door & Tooless Access Panels
EH Johnson UNT Controller, DFS, APS, Technicoat Cond. Coil, Phase Monitor, & Coil Guard, Hinged Filter Door & Tooless Access Panels
EJ Johnson UNT Controller, DFS, APS & Technicoat Evap. Coil, Hinged Filter Door & Tooless Access Panels
EK Johnson UNT Controller, DFS, APS, Technicoat Evap. Coil, & Phase Monitor, Hinged Filter Door & Tooless Access Panels
EL Johnson UNT Controller, DFS, APS, Technicoat Evap. Coil, & Coil Guard, Hinged Filter Door & Tooless Access Panels
EM Johnson UNT Controller, DFS, APS, Technicoat Evap. Coil, Phase Monitor, & Coil Guard, Hinged Filter Door & Tooless Access Panels
EN Johnson UNT Controller, DFS, APS & Technicoat Evap. & Cond Coils, Hinged Filter Door & Tooless Access Panels
EP Johnson UNT Controller, DFS, APS, Technicoat Evap. & Cond Coils, & Phase Monitor, Hinged Filter Door & Tooless Access Panels
EQ Johnson UNT Controller, DFS, APS, Technicoat Evap. & Cond Coils, & Coil Guard, Hinged Filter Door & Tooless Access Panels
ER Johnson UNT Controller, DFS, APS, Technicoat Evap. & Cond Coils, Phase Monitor, & Coil Guard, Hinged Filter Door & Tooless Access Panels
GA Honeywell Excel 10 Controller with Dirty Filter Switch & Air Proving Switch, Hinged Filter Door & Tooless Access Panels
GB Honeywell Excel 10 Controller, DFS, APS & Phase Monitor, Hinged Filter Door & Tooless Access Panels
GC Honeywell Excel 10 Controller, DFS, APS & Coil Guard, Hinged Filter Door & Tooless Access Panels
GD Honeywell Excel 10 Controller, DFS, APS, Phase Monitor, & Coil Guard, Hinged Filter Door & Tooless Access Panels
GE Honeywell Excel 10 Controller, DFS, APS & Technicoat Cond. Coil, Hinged Filter Door & Tooless Access Panels
GF Honeywell Excel 10 Controller, DFS, APS, Technicoat Cond. Coil, & Phase Monitor, Hinged Filter Door & Tooless Access Panels
GG Honeywell Excel 10 Controller, DFS, APS, Technicoat Cond. Coil, & Coil Guard, Hinged Filter Door & Tooless Access Panels
GH Honeywell Excel 10 Controller, DFS, APS, Technicoat Cond. Coil, Phase Monitor, & Coil Guard, Hinged Filter Door & Tooless Access Panels
GJ Honeywell Excel 10 Controller, DFS, APS & Technicoat Evap. Coil, Hinged Filter Door & Tooless Access Panels
GK Honeywell Excel 10 Controller, DFS, APS, Technicoat Evap. Coil, & Phase Monitor, Hinged Filter Door & Tooless Access Panels
GL Honeywell Excel 10 Controller, DFS, APS, Technicoat Evap. Coil, & Coil Guard, Hinged Filter Door & Tooless Access Panels
GM Honeywell Excel 10 Controller, DFS, APS, Technicoat Evap. Coil, Phase Monitor, & Coil Guard, Hinged Filter Door & Tooless Access Panels
GN Honeywell Excel 10 Controller, DFS, APS & Technicoat Evap. & Cond Coils, Hinged Filter Door & Tooless Access Panels
GP Honeywell Excel 10 Controller, DFS, APS, Technicoat Evap. & Cond Coils, & Phase Monitor, Hinged Filter Door & Tooless Access
Panels
GQ Honeywell Excel 10 Controller, DFS, APS, Technicoat Evap. & Cond Coils, & Coil Guard, Hinged Filter Door & Tooless Access Panels
GR Honeywell Excel 10 Controller, DFS, APS, Technicoat Evap. & Cond Coils, Phase Monitor, & Coil Guard, Hinged Filter Door & Tooless Access Panels
Additional Options

036-21060-004-A-1102
Unitary Products Group 9
HA Honeywell Excel 10 Controller with Dirty Filter Switch & Air Proving Switch
HB Honeywell Excel 10 Controller, DFS, APS & Phase Monitor
HC Honeywell Excel 10 Controller, DFS, APS & Coil Guard
HD Honeywell Excel 10 Controller, DFS, APS, Phase Monitor, & Coil Guard
HE Honeywell Excel 10 Controller, DFS, APS & Technicoat Cond. Coil
HF Honeywell Excel 10 Controller, DFS, APS, Technicoat Cond. Coil, & Phase Monitor
HG Honeywell Excel 10 Controller, DFS, APS, Technicoat Cond. Coil, & Coil Guard
HH Honeywell Excel 10 Controller, DFS, APS, Technicoat Cond. Coil, Phase Monitor, & Coil Guard
HJ Honeywell Excel 10 Controller, DFS, APS & Technicoat Evap. Coil
HK Honeywell Excel 10 Controller, DFS, APS, Technicoat Evap. Coil, & Phase Monitor
HL Honeywell Excel 10 Controller, DFS, APS, Technicoat Evap. Coil, & Coil Guard
HM Honeywell Excel 10 Controller, DFS, APS, Technicoat Evap. Coil, Phase Monitor, & Coil Guard
HN Honeywell Excel 10 Controller, DFS, APS & Technicoat Evap. & Cond Coils
HP Honeywell Excel 10 Controller, DFS, APS, Technicoat Evap. & Cond Coils, & Phase Monitor
HQ Honeywell Excel 10 Controller, DFS, APS, Technicoat Evap. & Cond Coils, & Coil Guard
HR Honeywell Excel 10 Controller, DFS, APS, Technicoat Evap. & Cond Coils, Phase Monitor, & Coil Guard
JA Johnson UNT Controller with Dirty Filter Switch & Air Proving Switch
JB Johnson UNT Controller, DFS, APS & Phase Monitor
JC Johnson UNT Controller, DFS, APS & Coil Guard
JD Johnson UNT Controller, DFS, APS, Phase Monitor, & Coil Guard
JE Johnson UNT Controller, DFS, APS & Technicoat Cond. Coil
JF Johnson UNT Controller, DFS, APS, Technicoat Cond. Coil, & Phase Monitor
JG Johnson UNT Controller, DFS, APS, Technicoat Cond. Coil, & Coil Guard
JH Johnson UNT Controller, DFS, APS, Technicoat Cond. Coil, Phase Monitor, & Coil Guard
JJ Johnson UNT Controller, DFS, APS & Technicoat Evap. Coil
JK Johnson UNT Controller, DFS, APS, Technicoat Evap. Coil, & Phase Monitor
JL Johnson UNT Controller, DFS, APS, Technicoat Evap. Coil, & Coil Guard
JM Johnson UNT Controller, DFS, APS, Technicoat Evap. Coil, Phase Monitor, & Coil Guard
JN Johnson UNT Controller, DFS, APS & Technicoat Evap. & Cond Coils
JP Johnson UNT Controller, DFS, APS, Technicoat Evap. & Cond Coils, & Phase Monitor
JQ Johnson UNT Controller, DFS, APS, Technicoat Evap. & Cond Coils, & Coil Guard
JR Johnson UNT Controller, DFS, APS, Technicoat Evap. & Cond Coils, Phase Monitor, & Coil Guard
NA Novar ETC-3 Controller with Dirty Filter Switch & Air Proving Switch
NB Novar ETC-3 Controller, DFS, APS & Phase Monitor
NC Novar ETC-3 Controller, DFS, APS & Coil Guard
ND Novar ETC-3 Controller, DFS, APS, Phase Monitor, & Coil Guard
NE Novar ETC-3 Controller, DFS, APS & Technicoat Cond. Coil
NF Novar ETC-3 Controller, DFS, APS, Technicoat Cond. Coil, & Phase Monitor
NG Novar ETC-3 Controller, DFS, APS, Technicoat Cond. Coil, & Coil Guard
NH Novar ETC-3 Controller, DFS, APS, Technicoat Cond. Coil, Phase Monitor, & Coil Guard
NJ Novar ETC-3 Controller, DFS, APS & Technicoat Evap. Coil
Additional Options

036-21060-004-A-1102
10 Unitary Products Group
NK Novar ETC-3 Controller, DFS, APS, Technicoat Evap. Coil, & Phase Monitor
NL Novar ETC-3 Controller, DFS, APS, Technicoat Evap. Coil, & Coil Guard
NM Novar ETC-3 Controller, DFS, APS, Technicoat Evap. Coil, Phase Monitor, & Coil Guard
NN Novar ETC-3 Controller, DFS, APS & Technicoat Evap. & Cond Coils
NP Novar ETC-3 Controller, DFS, APS, Technicoat Evap. & Cond Coils, & Phase Monitor
NQ Novar ETC-3 Controller, DFS, APS, Technicoat Evap. & Cond Coils, & Coil Guard
NR Novar ETC-3 Controller, DFS, APS, Technicoat Evap. & Cond Coils, Phase Monitor, & Coil Guard
PA Novar ETC-3 Controller with Dirty Filter Switch & Air Proving Switch, Hinged Filter Door & Tooless Access Panels
PB Novar ETC-3 Controller, DFS, APS & Phase Monitor, Hinged Filter Door & Tooless Access Panels
PC Novar ETC-3 Controller, DFS, APS & Coil Guard, Hinged Filter Door & Tooless Access Panels
PD Novar ETC-3 Controller, DFS, APS, Phase Monitor, & Coil Guard, Hinged Filter Door & Tooless Access Panels
PE Novar ETC-3 Controller, DFS, APS & Technicoat Cond. Coil, Hinged Filter Door & Tooless Access Panels
PF Novar ETC-3 Controller, DFS, APS, Technicoat Cond. Coil, & Phase Monitor, Hinged Filter Door & Tooless Access Panels
PG Novar ETC-3 Controller, DFS, APS, Technicoat Cond. Coil, & Coil Guard, Hinged Filter Door & Tooless Access Panels
PH Novar ETC-3 Controller, DFS, APS, Technicoat Cond. Coil, Phase Monitor, & Coil Guard, Hinged Filter Door & Tooless Access Panels
PJ Novar ETC-3 Controller, DFS, APS & Technicoat Evap. Coil, Hinged Filter Door & Tooless Access Panels
PK Novar ETC-3 Controller, DFS, APS, Technicoat Evap. Coil, & Phase Monitor, Hinged Filter Door & Tooless Access Panels
PL Novar ETC-3 Controller, DFS, APS, Technicoat Evap. Coil, & Coil Guard, Hinged Filter Door & Tooless Access Panels
PM Novar ETC-3 Controller, DFS, APS, Technicoat Evap. Coil, Phase Monitor, & Coil Guard, Hinged Filter Door & Tooless Access Panels
PN Novar ETC-3 Controller, DFS, APS & Technicoat Evap. & Cond Coils, Hinged Filter Door & Tooless Access Panels
PP Novar ETC-3 Controller, DFS, APS, Technicoat Evap. & Cond Coils, & Phase Monitor, Hinged Filter Door & Tooless Access Panels
PQ Novar ETC-3 Controller, DFS, APS, Technicoat Evap. & Cond Coils, & Coil Guard, Hinged Filter Door & Tooless Access Panels
PR Novar ETC-3 Controller, DFS, APS, Technicoat Evap. & Cond Coils, Phase Monitor, & Coil Guard, Hinged Filter Door & Tooless Access Panels
RC Factory Coil Guard and Small “Made in USA” American Flag Decal
TA Technicoat Condenser Coil
TB Technicoat Condenser Coil & Phase Monitor
TC Technicoat Condenser Coil & Coil Guard
TD Technicoat Condenser Coil & Dirty Filter Switch
TE Technicoat Condenser Coil, Phase Monitor, & Coil Guard
TF Technicoat Condenser Coil, Phase Monitor, & Dirty Filter Switch
TG Technicoat Condenser Coil, Coil Guard, & Dirty Filter Switch
TH Technicoat Condenser Coil, Phase Monitor, Coil Guard, & Dirty Filter Switch
TJ Technicoat Evaporator Coil
TK Technicoat Evaporator Coil & Phase Monitor
TL Technicoat Evaporator Coil & Coil Guard
TM Technicoat Evaporator Coil & Dirty Filter Switch
TN Technicoat Evaporator Coil, Phase Monitor, & Coil Guard
TP Technicoat Evaporator Coil, Phase Monitor, & Dirty Filter Switch
TQ Technicoat Evaporator Coil, Coil Guard, & Dirty Filter Switch
TR Technicoat Evaporator Coil, Phase Monitor, Coil Guard, & Dirty Filter Switch
TS Technicoat Evaporator & Condenser Coils
Additional Options

036-21060-004-A-1102
Unitary Products Group 11
TT Technicoat Evaporator & Condenser Coils & Phase Monitor
TU Technicoat Evaporator & Condenser Coils & Coil Guard
TV Technicoat Evaporator & Condenser Coils & Dirty Filter Switch
TW Technicoat Evaporator & Condenser Coils, Phase Monitor, & Coil Guard
TX Technicoat Evaporator & Condenser Coils, Phase Monitor, & Dirty Filter Switch
TY Technicoat Evaporator & Condenser Coils, Coil Guard, & Dirty Filter Switch
TZ Technicoat Evaporator & Condenser Coils, Phase Monitor, Coil Guard, & Dirty Filter Switch
UA Technicoat Condenser Coil, Hinged Filter Door & Tooless Access Panels
UB Technicoat Condenser Coil & Phase Monitor, Hinged Filter Door & Tooless Access Panels
UC Technicoat Condenser Coil & Coil Guard, Hinged Filter Door & Tooless Access Panels
UD Technicoat Condenser Coil & Dirty Filter Switch, Hinged Filter Door & Tooless Access Panels
UE Technicoat Condenser Coil, Phase Monitor, & Coil Guard, Hinged Filter Door & Tooless Access Panels
UF Technicoat Condenser Coil, Phase Monitor, & Dirty Filter Switch, Hinged Filter Door & Tooless Access Panels
UG Technicoat Condenser Coil, Coil Guard, & Dirty Filter Switch, Hinged Filter Door & Tooless Access Panels
UH Technicoat Condenser Coil, Phase Monitor, Coil Guard, & Dirty Filter Switch, Hinged Filter Door & Tooless Access Panels
UJ Technicoat Evaporator Coil, Hinged Filter Door & Tooless Access Panels
UK Technicoat Evaporator Coil & Phase Monitor, Hinged Filter Door & Tooless Access Panels
UL Technicoat Evaporator Coil & Coil Guard, Hinged Filter Door & Tooless Access Panels
UM Technicoat Evaporator Coil & Dirty Filter Switch, Hinged Filter Door & Tooless Access Panels
UN Technicoat Evaporator Coil, Phase Monitor, & Coil Guard, Hinged Filter Door & Tooless Access Panels
UP Technicoat Evaporator Coil, Phase Monitor, & Dirty Filter Switch, Hinged Filter Door & Tooless Access Panels
UQ Technicoat Evaporator Coil, Coil Guard, & Dirty Filter Switch, Hinged Filter Door & Tooless Access Panels
UR Technicoat Evaporator Coil, Phase Monitor, Coil Guard, & Dirty Filter Switch, Hinged Filter Door & Tooless Access Panels
US Technicoat Evaporator & Condenser Coils, Hinged Filter Door & Tooless Access Panels
UT Technicoat Evaporator & Condenser Coils & Phase Monitor, Hinged Filter Door & Tooless Access Panels
UU Technicoat Evaporator & Condenser Coils & Coil Guard, Hinged Filter Door & Tooless Access Panels
UV Technicoat Evaporator & Condenser Coils & Dirty Filter Switch, Hinged Filter Door & Tooless Access Panels
UW Technicoat Evaporator & Condenser Coils, Phase Monitor, & Coil Guard, Hinged Filter Door & Tooless Access Panels
UX Technicoat Evaporator & Condenser Coils, Phase Monitor, & Dirty Filter Switch, Hinged Filter Door & Tooless Access Panels
UY Technicoat Evaporator & Condenser Coils, Coil Guard, & Dirty Filter Switch, Hinged Filter Door & Tooless Access Panels
UZ Technicoat Evaporator & Condenser Coils, Phase Monitor, Coil Guard, & Dirty Filter Switch, Hinged Filter Door & Tooless Access Panels
Additional Options

036-21060-004-A-1102
12 Unitary Products Group
TABLE 1: CAPACITY RATINGS - COOLING
MODEL TOTAL OUTPUT KW/
MBH TOTAL INPUTKW COP EER ELECTRIC HEAT NOMINAL CAPACITY KW
300 85.2 / 293 35.4 2.4 8.3 18, 36, 54, 72
TABLE 2: CAPACITY RATINGS - GAS HEAT
MODEL
DM300
TOTAL OUTPUT kW/
MBH TOTAL INPUT kW COP EER GAS HEAT RATINGS MBH INPUT MBH OUTPUT
LOW HEAT 85.2 / 293 35.4 2.4 8.3 300 240
HIGH HEAT 85.2 / 293 35.4 2.4 8.3 380 304
TABLE 3: COOLING CAPACITIES - 87 KW(DM300) M3/S
Air On
Evaporator Coil
Temperature of Air on Condenser Coil
OD Dry Bulb - 27 OD Dry Bulb - 35 OD Dry Bulb - 46
Total
Cap kW1
Power
Input kW2
Sensible1Capacity To t al
Cap
kW1
Power
Input
kW2
Sensible1Capacity To t a l
Cap
kW1
Power
Input
kW2
Sensible1Capacity
Entering Dry Bulb °C Entering Dry Bulb °C Entering Dry Bulb °C
m3/sec. WB 31 28 25 22 31 28 25 22 31 28 25 22
4.72
23 108 24.8 68 51 33 - 101 27.3 67 49 32 - 88 32.0 62 45 28 -
20 100 24.0 90715335 94 26.489695134 83 31.283644730
17 94 23.5 94 94 74 55 90 25.9 90 89 72 53 79 30.5 79 77 66 47
14 94 23.5 94 94 88 76 89 25.8 89 89 83 74 79 30.5 79 77 72 67
4.25
23 106 24.6 64 48 32 - 100 27.1 63 46 31 - 86 31.8 58 42 27 -
20 98 23.9 84 67 50 34 92 26.2 82 65 48 32 81 30.7 76 60 44 28
17 91 23.2 91 87 69 52 86 25.5 86 84 67 50 76 30.0 76 75 62 45
14 91 23.2 91 90 85 71 86 25.5 86 86 80 69 76 30.0 76 75 70 63
3.78
23 104 24.5 60 45 31 - 98 26.9 58 44 30 - 85 31.6 54 40 26 -
20 96 23.8 78 62 48 33 90 26.0 76 61 46 31 78 30.3 71 56 41 27
17 88 23.0 88 80 65 50 83 25.1 83 79 63 48 73 29.5 73 72 58 43
14 88 23.0 88 87 82 66 83 25.1 83 83 78 65 73 29.5 73 72 67 59
1. These capacities are gross ratings. For net capacity deduct the heat of the supply air blower motor MBH = 3.415 x kw. Refer to the appropriate
Blower Performance table for the kw of the supply air blower motor.
2. These ratings include the condenser fan motors and the compressor motors, but not the supply air blower motor.

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Unitary Products Group 13
TABLE 4: COOLING CAPACITIES - 25 TON (DM300) CFM
Air On
Evaporator
Coil
Temperature of Air on Condenser Coil
OD Dry Bulb - 80.0 OD Dry Bulb - 95.0 OD Dry Bulb - 115.0
Tot a l
Cap1
MBH
Power
Input
kW2
Sensible1Capacity Total
Cap.
MBH1
Power
Input
kW2
Sensible1*Capacity To t al
Cap.
MBH1
Power
Input
kW 2
Sensible1Capacity
Entering Dry Bulb °F Entering Dry Bulb °F Entering Dry Bulb °F
CFMWB 88827772 88827772 888277 72
10000
73 368 24.8 233 173 113 - 346 27.3 229 168 108 - 300 32.0 213 155 96 -
68 341 24.0 309 243 180 120 321 26.4 304 237 175 114 283 31.2 283 220 162 103
63 322 23.5 322 320 252 187 306 25.9 306 303 245 181 268 30.5 268 265 227 162
57 322 23.5 322 320 301 258 305 25.8 305 302 284 251 268 30.5 268 265 247 230
9000
73 362 24.6 219 164 110 - 341 27.1 214 158 105 - 295 31.8 200 144 93 -
68 334 23.9 287 228 171 116 315 26.2 282 222 166 111 275 30.7 261 206 151 96
63 311 23.2 311 296 236 178 295 25.5 294 285 229 172 259 30.0 259 258 213 155
57 310 23.2 310 309 291 242 295 25.5 294 292 274 236 258 30.0 258 258 241 216
8000
73 357 24.5 204 155 106 - 336 26.9 200 150 101 - 291 31.6 186 137 89 -
68 328 23.8 266 213 162 113 308 26.0 260 208 157 107 266 30.3 244 192 141 93
63 300 23.0 300 274 221 169 285 25.1 285 268 214 163 250 29.5 250 248 199 148
57 299 23.0 299 298 281 227 284 25.1 284 282 265 221 249 29.5 249 248 230 203
1. These capacities are gross ratings. For net capacity deduct the heat of the supply air blower motor MBH = 3.415 x kW. Refer to the appropriate
Blower Performance Table for the kW of the supply air blower motor.
2. These ratings include the condenser fan motors and the compressor motors, but not the supply air blower motor.

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14 Unitary Products Group
TABLE 5: BLOWER PERFORMANCE - DM300 - BOTTOM DUCT CONNECTIONS (COOLING APPLICATIONS)
DM300 UNIT - DOWNFLOW DUCT CONNECTIONS
BLOWER
SPEED (rpm)
PULLEY
TURNS OPEN
7500 CFM 8750 cfm 10000 cfm
ESP (iwg) OUTPUT (bhp) INPUT (kW) ESP (iwg) OUTPUT (bhp) INPUT
(kW) ESP (iwg) OUTPUT (bhp) INPUT (kW)
945 6.0 1.2 5.6 4.6 0.8 7.0 5.7 0.3 8.4 6.9
975 5.0 1.4 5.9 4.9 1.0 7.3 6.0 0.5 8.8 7.2
1005 4.0 1.6 6.2 5.1 1.2 7.7 6.3 0.7 9.2 7.6
1040 3.0 1.8 6.6 5.4 1.4 8.1 6.7 0.9 9.7 8.0
1070 2.0 2.0 6.9 5.7 1.6 8.5 7.0 1.1 10.2 8.3
1100 1.0 2.1 7.3 6.0 1.8 8.9 7.3 1.3 10.6 8.7
1130 0.0 2.3 7.6 6.2 2.0 9.3 7.6 1.5 11.0 9.0
DM300 UNIT - DOWNFLOW DUCT CONNECTIONS
BLOWER
SPEED (rpm)
PULLEY
TURNS OPEN
3.53 m3/Sec. 4.13 m3/Sec. 4.72 m3/Sec.
ESP (Pa) OUTPUT(bhp) INPUT (kW) ESP (Pa) OUTPUT (bhp) INPUT
(kW) ESP (Pa) OUTPUT(bhp) INPUT (kW)
945 6.0 303 5.6 4.6 198 7.0 5.7 71 8.4 6.9
975 5.0 347 5.9 4.9 244 7.3 6.0 120 8.8 7.2
1005 4.0 391 6.2 5.1 291 7.7 6.3 169 9.2 7.6
1040 3.0 443 6.6 5.4 347 8.1 6.7 228 9.7 8.0
1070 2.0 489 6.9 5.7 396 8.5 7.0 280 10.2 8.3
1100 1.0 536 7.3 6.0 445 8.9 7.3 332 10.6 8.7
1130 0.0 583 7.6 6.2 495 9.3 7.6 385 11.0 9.0
DM300 UNIT - DOWNFLOW DUCT CONNECTIONS - GAS HEAT MODELS
BLOWER
SPEED (rpm)
PULLEY
TURNS OPEN
7500 CFM 8750 cfm 10000 cfm
ESP (iwg) OUTPUT (bhp) INPUT (kW) ESP (iwg) OUTPUT (bhp) INPUT
(kW) ESP (iwg) OUTPUT (bhp) INPUT
(kW)
945 6.0 1.0 5.6 4.6 0.3 7.0 5.7 - - -
975 5.0 1.2 5.9 4.9 0.5 7.3 6.0 - - -
1005 4.0 1.4 6.2 5.1 0.7 7.7 6.3 - - -
1040 3.0 1.6 6.6 5.4 0.9 8.1 6.7 0.2 9.7 8.0
1070 2.0 1.8 6.9 5.7 1.1 8.5 7.0 0.4 10.2 8.3
1100 1.0 2.0 7.3 6.0 1.3 8.9 7.3 0.6 10.6 8.7
1130 0.0 2.2 7.6 6.2 1.5 9.3 7.6 0.8 11.0 9.0
DM300 UNIT - DOWNFLOW DUCT CONNECTIONS - GAS HEAT MODELS
BLOWER
SPEED (rpm)
PULLEY
TURNS OPEN
3.53 m3/sec. 4.13 m3/sec. 4.72 m3/sec.
ESP (Pa) OUTPUT (bhp) INPUT (kW) ESP (Pa) OUTPUT (bhp) INPUT
(kW) ESP (Pa) OUTPUT (bhp) INPUT (kW)
945 6.0 258 5.6 4.6 87 7.0 5.7 - - -
975 5.0 301 5.9 4.9 133 7.3 6.0 - - -
1005 4.0 345 6.2 5.1 180 7.7 6.3 - - -
1040 3.0 398 6.6 5.4 236 8.1 6.7 43 9.7 8.0
1070 2.0 444 6.9 5.7 285 8.5 7.0 94 10.2 8.3
1100 1.0 490 7.3 6.0 334 8.9 7.3 146 10.6 8.7
1130 0.0 537 7.6 6.2 384 9.3 7.6 199 11.0 9.0

036-21060-004-A-1102
Unitary Products Group 15
TABLE 6: STATIC RESISTANCES1- EXTERNAL STATIC PRESSURE DROP
DESCRIPTION
RESISTANCE, Pa / iwg
m3/s / CFM
3.78/ 8,000 4.25 / 9,000 4.72 / 10,000
WET COIL 25 / 0.1 25 / 0.1 25 / 0.1
GAS HEAT 25 / 0.1 25 / 0.1 25 / 0.1
ELECTRIC HEAT OPTIONS
18 KW 25 / 0.1 25 / 0.1 25 / 0.1
36 KW 25 / 0.1 50 / 0.2 75 / 0.3
54 KW 50 / 0.2 75 / 0.3 100 / 0.4
72 KW 50 / 0.2 100 / 0.4 150 / 0.6
ECONOMIZER OPTION 25 / 0.1 25 / 0.1 25 / 0.1
HORIZONTAL DUCT CONNECTIONS 50 / 0.2 75 / 0.3 125 / 0.5
1.Deduct these resistance values from the available unit ESP values listed in the respective blower performance table except for Horizontal Duct Connections
Add these values due to less airflow resistance.
TABLE 7: BLOWER MOTOR AND DRIVE DATA
MODEL
SIZE
BLOWER
RANGE
(RPM)
MOTOR1ADJUSTABLE
MOTOR PULLEY2FIXED BLOWER PULLEY (NOTCHED)
kW / HP FRAME EFF. (%)
DESIG-
NATION
DIA. mm
(IN.)
PITCH BORE DESIG-
NATION
PITCH
DIA. BORE DESIG-
NATION
PITCH
LENGTH QTY
300 950 /1130 7.5 / 10 254T 89 1LVP58
B70A
157-188
6.2-7.4)
A2
BUSHING 1B5V94 241 (9.5) B BUSHING 5VX840 2134 (84) 1
1. All motors have a nominal speed of 1450 RPM, a 1.15 service factor and a solid base. They can operate to the limit of their service factor because
they are located in the moving air, upstream of any heating service.
2. Do NOT close this pulley below one turn.

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16 Unitary Products Group
TABLE 8: PHYSICAL DATA
COMPONENT DESCRIPTION UNIT
MODEL 300
SUPPLY AIR BLOWER
CENTRIFUGAL BLOWER
DIA. X. WD. (mm) 457 x 381
DIA. X. WD. (in.) 18 x 15
FAN MOTOR kW / HP 7.5 / 10
INDOOR COIL
ROWS DEEP 4
FINS PER 25mm (1 in.) 13.5
FACE AREA m2/ Ft.22.3/25.0
OUTDOOR FANS
(Two Per Unit)
PROPELLER DIA. mm / in. 762 / 30 ea.
FAN MOTOR kW / HP 0.7 / 1 ea.
NOMINAL AIRFLOW
m3/ s 3.40 ea.
CFM 7200 ea.
OUTDOOR COIL
ROWS DEEP 3
FINS PER 25mm (1 in.) 15
FACE AREA m2/ Ft.24.02 / 43.3
COMPRESSOR (Qty. Per Unit) TANDEM (12.5 TON NOMINAL CAPACITY) 2
AIR FILTERS
(4” or 102mm optional)
QUANTITY PER UNIT
406 x 508 x 51 (mm)
2
16 x 20 x 2 (in.)
QUANTITY PER UNIT
406 x 635 x 51 (mm)
4
16 x 25 x 2 (in.)
QUANTITY PER UNIT
457 x 610 x 51 (mm)
3
14 x 20 x 2 (in.)
TOTAL FACE AREA m2/ Ft.29.1/ 21.4
CHARGE REFRIGERANT 22
SYS. #1 (kg. / lbs.) 9.3/20.5
SYS. #2 (kg. / lbs.) 9.1/20.0
VOLTAGE LIMITATIONS1
POWER SUPPLY
VOLTAGE
MIN. MAX.
380/415-3-50 342 457
1. Rated in accordance with ARI Standard, utilization range “A”.
TABLE 9: ELECTRICAL DATA - COOLING ONLY UNITS AND UNITS WITH GAS HEAT
MODEL POWER
SUPPLY
COMPRESSORS
COND. FAN
MOTORS #1 & #2
SUPPLY AIR
BLOWER
MOTOR
MINIMUM
CIRCUIT
AMPACITY
(AMPS)
MAXIMUM OVER-
CURRENT DEVICE1
(AMPS)
(QTY. 2)
Tandems
RLA
(Each)
LRA
(Each HP FLA HP FLA
DM300 380/415-3-50 24 202 1.0 2.1 10 19.0 76 90
1. Dual element, time delay fuse or HACR breaker.

036-21060-004-A-1102
Unitary Products Group 17
TABLE 10: ELECTRICAL DATA - UNITS WITH ELECTRIC HEAT
MODEL
DM
POWER
SUPPLY
HEATER OPTION MINIMUM
CIRCUIT
AMPACITY
(AMPS)
MAXIMUM
OVERCURRENT
DEVICE2
(AMPS)
MODEL KW1STAGES AMPS
300
380-3-50
E018 11.3 1 17.1 76.0 90
E036 22.6 2 34.3 76.0 90
E054 33.8 2 51.4 87.9 90
E072 45.1 2 68.6 109.4 110
415-3-50
E018 13.5 1 18.7 76.0 90
E036 26.9 2 37.4 76.0 90
E054 40.4 2 56.2 94.0 100
E072 53.8 2 74.9 98.6 110
1Electric Heat CORRECTION FACTORS:
2Dual element time delay fuse or HACR breaker.
NOMINAL VOLTAGE VOLTAGE KW CAP.
MULTIPLIER
415 400 0.93
WEIGHTS (KG. / LBS.)
BASIC UNIT
DM300 (Cooling only) 1238 / 2730
DM300 (Gas / Electric) N24
N32
1332 / 2930
1360 / 2992
OPTIONS / ACCESSORIES
Electric Heater
(Elec/Elec only)
18 KW 11.4 / 25
36 KW 13.6 / 30
54 KW 15.9 / 35
72 KW 18.2 / 40
Economizer 73 / 160
Motorized Damper 68 / 150
Roof Curb 84 / 185
Barometric Damper 20 / 45
Wood Skid1100 / 220
1. Allows handling of unit using 90° (2300mm) long forks.

036-21060-004-A-1102
18 Unitary Products Group
FIGURE 1: FIELD WIRING - DM ELECTRIC/ELECTRIC AND GAS/ ELECTRIC UNITS
W1
W2
Y1
G
OCC
P
P1
Y2
X
R
SD
C
C
SD
SD
R
OCC
C
RC
G
Y2
Y1
W2
W1
Jumper
Smoke
Detector
24 VAC
Class 2
X
R
THERMOSTAT
TERMINALS
CONTROL
TERMINAL
BLOCK
TERMINALS ON
A LIMITED
NUMBER OF
THERMOSTATS
3
1
2
4
3
1
2
4
Second stage heating not required on single stage heating units.
Second stage cooling not required on single stage cooling units.
Jumper is required if there is no Smoke Detector circuit.
Jumper is required for any combination of R, RC, or RH.
6
5
5
6
OCC is an output from the thermostat to indicate the Occupied condition.
X is an input to the thermostat to display Error Status conditions.

036-21060-004-A-1102
Unitary Products Group 19
FIGURE 2 : UNIT DIMENSIONS - DM COOL & COOL/
ELECTRIC HEAT
FIGURE 3 : UNIT DIMENSIONS - DM GAS HEAT
Note: All dimensions are in inches. They are subject to change without notice.
Certified dimensions will be provided upon request.
HOLE OPENING
(DIA.) (mm / in.)
USED FOR
Control
Wiring
Front
A
29 / 1-1/8" KO
19 / 3/4" NPS
(Fem.) Bottom
B
92 / 3-5/8" KO
Power
Wiring
Front
76 / 3" NPS
(Fem.) Bottom
C 60 / 2-3/8" KO Gas Piping (Front)
D43 / 1-11/16"
Hole Gas Piping (Bottom)1
1. Opening in the bottom of the unit can be located
by the slice in the insulation.
CLEARANCES (mm/in.)
Front 914 / 36"
Back 610 / 24" (Less Economizer)
1245 / 49" (With Economizer)
Left Side (Filter Access) 610 / 24" (Less Economizer)
Right Side (Cond. Coil) 1372 / 54" (With Economizer)
914 / 36"
Below Unit1
1. Units (applicable in U.S.A. only) may be installed on com-
bustible floors made from wood or class A, B or C roof
covering material.
0 / 0"
Above Unit2
2. Units must be installed outdoors. Overhanging structures
or shrubs should not obstruct condenser air discharge
outlet.
Note: Cool-Only Models: Units and ductwork are approved for zero
clearance to combustible materials when equipped with electric
heaters.
Gas Heat Models: A 1-inch clearance must be provided between
any combustible materials and the supply air ductwork for a dis-
tance of 3 feet from the unit.
The products of combustion must not be allowed to accumulate
within a confined space and recirculate.
Locate unit so that the vent air outlet hood is at least:
Three (3) feet above any forced air inlet located within ten (10)
horizontal feet (excluding those integral to the unit).
Four (4) feet below, four (4) horizontal feet from, or one (1) foot
above any door or gravity air inlet into the building
Four (4) feet from electric meters, gas meters, regulators and
relief equipment.
Note: All dimensions are in inches. They are subject to change without
notice. Certified dimensions will be provided upon request.
1829 / 72" With 914 / 36" Maximum
Horizontal Overhang (For Condenser
Air Discharge)
Return Air
Supply Air
Condenser Air
Outdoor Air

036-21060-004-A-1102
20 Unitary Products Group
FIGURE 4: ACCESSORY SIDE SUPPLY AND RETURN AIR OPENINGS
SUPPLY
AIR
RETURN
AIR
OUTDOOR
AIR
5-1/8"
18-5/8"
27-3/4"
39-5/8"
40-1/2"
OUTDOOR AIR
COMPARTMENT
ACCESS
FILTER
ACCESS
1" NPT FEMALE
COND. DRAIN
CONNECTION
DOT PLUG
(For pressur
e
drop reading)
EVAPORATOR
SECTION
CONDENSER
SECTION
GAUGE LINE
ACCESS
40-3/8"
5-1/2"
COMPRESSOR
ACCESS
SUPPLY AIR
ACCESS
RETURN AIR
ACCESS
REAR
VIEW
DUCT COVERS - Units are shipped with the bottom duct
openings covered. An accessory flange kit is available for
connecting side ducts.
For bottom duct applications:
1. Remove the side panels from the supply and return air
compartments to gain access to the bottom supply and
return air duct covers.
2. Remove and discard the bottom duct covers. (Duct
openings are closed with sheet metal covers except
when the unit includes a power exhaust option. The cov-
ering consists of a black paper composition.)
3. Replace the side supply and return air compartment
panels.
For side duct applications:
1. Replace the side panels on the supply and return air
compartments with the accessory flange kit panels.
2. Connect ductwork to the duct flanges on the rear of the
unit.
FIGURE 5: UNIT WITH RAIN HOOD
SUPPLY AIR
COMPARTMENT
POWER EXHAUST
RAIN HOOD
(on Return Air Compartment)
ECONOMIZER
MOTORIZED
DAMPER
RAIN HOOD
(on Outdoor Air Compartment) ECONOMIZER / MOTORIZED DAMPER
AND POWER EXHAUST RAIN HOODS
FIXED
OUTDOOR AIR
INTAKE HOOD
(located on
Return Air
Compartment) 25 (1")
CONDENSTATE
DRAIN
(Must be trapped)
REAR VIEW LH VIEW
914 (36")
1689
(66-1/2")
2337
(92")
921
(36-1/4")
127 (5")
870
(34-1/4")
410
(16-1/8")
51
(2")
FIGURE 6: CENTER OF GRAVITY
BACK
APPR
APPR
OXIMA
XIMA
TE
TE
CENTER OF GRA
CENTER OF GRA
VITY
VITY
CONDENSER
COIL END
FRONT
1376
(56")
1078 (44")
2254
(92")
3338 (136-1/4")"