Daikin DCC Series User manual

©2018 - 2019
5151 San Felipe St., Suite 500, Houston, TX 77056
www.daikinac.com
ATTENTION INSTALLING PERSONNEL:
Prior to installation, thoroughly familiarize yourself with
this Installation Manual. Observe all safety warnings.
During installation or repair, caution is to be observed.
It is your responsibility to install the product safely and
to educate the customer on its safe use.
RECOGNIZE THIS SYMBOL
AS A SAFETY PRECAUTION.
These installation instructions cover the outdoor installation
of single package heating and cooling units. See the
Specication Sheet applicable to your model for information
regarding accessories.
*NOTE: Please contact your distributor or our website for
the applicable Specication Sheet referred to in this manual.
DCCSERIES
LIGHT COMMERCIAL PACKAGED HEATING AND COOLING UNIT
15 to 25 TON
Our continuing commitment to quality products may mean a change in specications without notice.
IOD-1028A
03/2019
Index
Replacement Parts .........................................................2
Safety Instructions .........................................................2
General Information .......................................................2
Unit Location...................................................................3
Clearances ......................................................................5
Roof Curb Post-Installation Checks .............................6
Roof Top Duct Connections ..........................................6
Rigging Details ...............................................................6
Electrical Wiring .............................................................7
Circulating Air and Filters..............................................9
Condensate Drain Connection......................................9
Startup, Adjustments, and Checks .............................10
NOTE: 15 & 20 ton model shown in picture.
25 ton model has 2 fans.
O
NLY PERSONNEL THAT HAVE BEEN TRAINED TO INSTALL , ADJUST , SERVICE OR
REPAIR ( HEREINAFTER , “ SERVICE ”) THE EQUIPMENT SPECIFIED IN THIS MANUAL
SHOULD SERVICE THE EQUIPMENT . T HE MANUFACTURER WILL NOT BE RESPONSIBLE
FOR ANY INJURY OR PROPERTY DAMAGE ARISING FROM IMPROPER SERVICE OR
SERVICE
PROCEDURES . I F YOU SERVICE THIS UNIT , YOU ASSUME
RESPONSIBILITY
FOR ANY INJURY OR PROPERTY DAMAGE WHICH MAY RESULT . I N ADDITION , IN
JURISDICTIONS THAT
REQUIRE ONE OR MORE
LICENSES TO SERVICE THE
EQUIPMENT
SPECIFIED
IN THIS
MANUAL , ONLY LICENSED PERSONNEL SHOULD SERVICE THE
EQUIPMENT . I MPROPER INSTALLATION , ADJUSTMENT , SERVICING OR REPAIR OF
THE EQUIPMENT SPECIFIED IN THIS
MANUAL , OR ATTEMPTING TO INSTALL , ADJUST ,
SERVICE OR REPAIR THE EQUIPMENT SPECIFIED IN THIS MANUAL WITHOUT PROPER
TRAINING
MAY RESULT IN PRODUCT DAMAGE , PROPERTY DAMAGE ,
PERSONAL
INJURY OR DEATH .
WARNING
PROP 65 WARNING
FOR CALIFORNIA CONSUMERS
Cancer and Reproductive Harm -
www.P65Warnings.ca.gov
0140M00517-A
INSTALLATION INSTRUCTIONS

2
REPLACEMENT PARTS
OrDerinG Parts
When reporting shortages or damages, or ordering repair
parts, give the complete unit model and serial numbers
as stamped on the unit’s nameplate.
Replacement parts for this appliance are available
through your contractor or local distributor. For the
location of your nearest distributor, consult the white
business pages, the yellow page section of the local
telephone book or contact:
EQUIPMENT SUPPORT
DAIKIN NORTH AMERICA LLC
19001 KERMIER ROAD
WALLER, TEXAS 77484
855-770-5678
SAFETY INSTRUCTIONS
tOthe installer
Before installing this unit, please read this manual to
familiarize yourself on the specic items which must be
adhered to, including maximum external static pressure
to unit, air temperature rise and minimum or maximum
CFM.
Keep this literature in a safe place for future reference.
S HEET METAL PARTS , SCREWS , CLIPS AND SIMILAR ITEMS INHERENTLY
HAVE SHARP EDGES , AND IT IS NECESSARY THAT THE INSTALLER AND
SERVICE PERSONNEL EXERCISE CAUTION .
CAUTION
DONOT CONNECT TO OR USE ANY DEVICE THAT IS NOT DESIGN
CERTIFIED BY THE MANUFACTURER FOR USE WITH THIS UNIT. SERIOUS
PROPERTY DAMAGE, PERSONAL INJURY, REDUCED UNIT PERFORMANCE
AND/OR HAZARDOUS CONDITIONS MAY RESULT FROM THE USE OF
SUCH NON-APPROVED DEVICES.
WARNING
T HIS UNIT MUST NOT BE USED AS A “ CONSTRUCTION HEATER ” DURING
THE FINISHING PHASES OF CONSTRUCTION ON A NEW STRUCTURE . T HIS
TYPE OF USE MAY RESULT IN PREMATURE FAILURE OF THE UNIT DUE TO
EXTREMELY LOW RETURN AIR TEMPERATURES AND EXPOSURE TO
CORROSIVE OR VERY DIRTY ATMOSPHERES .
WARNING
HIGH VOLTAGE !
D ISCONNECT ALL POWER BEFORE SERVICING OR
INSTALLING THIS
UNIT
. M ULTIPLE POWER SOURCES MAY
BE PRESENT . F AILURE TO DO SO MAY CAUSE PROPERTY
DAMAGE , PERSONAL INJURY OR DEATH .
WARNING
T O PREVENT THE RISK OF PROPERTY DAMAGE , PERSONAL INJURY OR
DEATH , DO NOT STORE COMBUSTIBLE MATERIALS OR USE GASOLINE OR
OTHER FLAMMABLE LIQUIDS OR VAPORS IN THE VICINITY OF THIS
APPLIANCE .
WARNING
GENERAL INFORMATION
For complete information and installation instructions
for models with DDC controls, see manual DK-DDC-
TGD-XXX.
T O PREVENT PROPERTY DAMAGE , PERSONAL INJURY OR DEATH DUE TO
FIRE , EXPLOSIONS , SMOKE , SOOT , CONDENSATION , ELECTRIC SHOCK OR
CARBON MONOXIDE , THIS UNIT MUST BE PROPERLY INSTALLED ,
REPAIRED , OPERATED AND MAINTAINED .
WARNING
This unit is approved for outdoor installation ONLY. Rated
performance is achieved after 72 hours of operation. Rated
performance is delivered at the specied airow. See outdoor
unit specication sheet for split system models or product
specication sheet for packaged and light commercial models.
Specication sheets can be found at www.daikinac.com for
Daikin brand products. Within the website, please select the
residential or commercial products menu and then select the
submenu for the type of product to be installed, such as air
conditioners or heat pumps, to access a list of product pages
that each contain links to that model’s specication sheet.
Airow Adjustments..................................................... 11
Motor Sheave Adjustments .........................................12
Maintenance..................................................................13
Appendix A Blower Performance Data .......................15
Belt Drive - Standard ...............................................15
Belt Drive - High Static ............................................16
Appendix A Economizer Pressure Drop.....................17
Appendix B Electrical Data..........................................18
Appendix C Unit Dimensions ......................................21
Appendix D Wiring Diagrams......................................22
Wiring Diagrams for Models with DDC Controls.......25
Start-up checklist .........................................................29

3
To assure that your unit operates safely and efciently, it
must be installed, operated, and maintained in accordance
with these installation and operating instructions, all local
building codes and ordinances, or in their absence, with the
latest edition of the National Fuel Gas Code NFPA54/ANSI
Z223.1 and National Standard of Canada CAN/CSA B149
Installation Codes.
ePa reGulatiOns
imPOrtant: the uniteD states envirOnmental PrOteCtiOn
aGenCy (ePa) has issueD variOus reGulatiOns reGarDinG
the intrODuCtiOn anD DisPOsal Of refriGerants in this
unit. failure tO fOllOw these reGulatiOns may harm the
envirOnment anD Can leaD tO the imPOsitiOn Of substantial
fines. beCause reGulatiOns may vary Due tO PassaGe Of new
laws, we suGGest aCertifieD teChniCian PerfOrm any wOrk
DOne On this unit. shOulD yOu have any questiOns Please
COntaCt the lOCal OffiCe Of the ePa.
natiOnal CODes
This product is designed and manufactured to permit instal-
lation in accordance with National Codes. It is the installer’s
responsibility to install the product in accordance with National
Codes and/or prevailing local codes and regulations.
The heating and cooling capacities of the unit should be greater
than or equal to the design heating and cooling loads of the
area to be conditioned. The loads should be calculated by an
approved method or in accordance with ASHRAE Guide or
Manual J - Load Calculations published by the Air Conditioning
Contractors of America.
Obtain from:
American National Standards Institute
25 West 43rd Street, 4th Floor
New York, NY 10036
System design and installation should also, where applicable,
follow information presented in accepted industry guides such
as the ASHRAE Handbooks. The manufacturer assumes no
responsibility for equipment installed in violation of any code
or regulation. The mechanical installation of the packaged roof
top units consists of making nal connections between the unit
and building services; supply and return duct connections; and
drain connections (if required). The internal systems of the unit
are completely factory-installed and tested prior to shipment.
Units are generally installed on a steel roof mounting curb
assembly which has been shipped to the job site for installation
on the roof structure prior to the arrival of the unit. The model
number shown on the unit’s identication plate identies the
various components of the unit such as refrigeration tonnage,
heating input and voltage.
Carefully inspect the unit for damage including damage to
the cabinetry. Any bolts or screws which may have loosened
in transit must be re-tightened. In the event of damage, the
receiver should:
1. Make notation on delivery receipt of any visible
damage to shipment or container.
2. Notify carrier promptly and request an inspection.
3. In case of concealed damage, carrier should be
notied as soon as possible-preferably within 5 days.
4. File the claim with the following supporting documents:
a. Original Bill of Lading, certied copy, or indemnity
bond.
b. Original paid freight bill or indemnity in lieu thereof.
c. Original invoice or certied copy thereof, showing
trade and other discounts or reductions.
d. Copy of the inspection report issued by carrier
representative at the time damage is reported to
the carrier. The carrier is responsible for making
prompt inspection of damage and for a thorough
investigation of each claim. The distributor or
manufacturer will not accept claims from dealers for
transportation damage.
NOTE: When inspecting the unit for transportation damage,
remove all packaging materials. Recycle or dispose of the
packaging material according to local codes.
Pre-installatiOn CheCks
Carefully read all instructions for the installation prior to in-
stalling unit. Ensure each step or procedure is understood
and any special considerations are taken into account before
starting installation. Assemble all tools, hardware and sup-
plies needed to complete the installation. Some items may
need to be purchased locally.
UNIT LOCATION
T O PREVENT POSSIBLE EQUIPMENT DAMAGE , PROPERTY DAMAGE ,
PERSONAL INJURY OR DEATH , THE FOLLOWING BULLET POINTS MUST BE
OBSERVED WHEN INSTALLING THE UNIT .
WARNING
IMPORTANT NOTE: Remove wood shipping rails prior to
installation of the unit. See important note under Roof Curb
Installation Only.
all installatiOns:
imPOrtant nOte: Unit should be energized 24 hours
prior to compressor start up to ensure crankcase heater
has sufciently warmed the compressors. Compressor
damage may occur if this step is not followed.
NOTE: This appliance is a dedicated downow design.
Proper installation of the unit ensures trouble-free operation.
Improper installation can result in problems ranging from
noisy operation to property or equipment damages, danger-
ous conditions that could result in injury or personal property
damage. Damage or repairs due to improper installation
are not covered under the warranty. Give this booklet to the
user and explain it’s provisions. The user should retain these
instructions for future reference.
• For proper operation and condensate drainage, the
unit must be mounted level.
• The ue outlet hood must be at least three feet
above any forced air inlet located within ten feet. The
economizer/manual fresh air intake/motorized fresh
air intake and combustion air inlet mounted on the
unit are not affected by this restriction.
• Do not locate the unit in an area where the outdoor
air (i.e. combustion air for the unit) will be frequently

4
contaminated by compounds containing chlorine
or uorine. Common sources of such compounds
include swimming pool chemicals and chlorine
bleaches, paint stripper, adhesives, paints, varnishes,
sealers, waxes (which are not yet dried) and solvents
used during construction and remodeling. Various
commercial and industrial processes may also be
sources of chlorine/uorine compounds.
• To avoid possible corrosion of the heat exchanger,
do not locate the unit in an area where the outdoor
air (i.e. combustion air for the unit) will be frequently
contaminated by compounds containing chlorine
or uorine. Common sources of such compounds
include swimming pool chemicals and chlorine
bleaches, paint stripper, adhesives, paints, varnishes,
sealers, waxes (which are not yet dried) and solvents
used during construction and remodeling. Various
commercial and industrial processes may also be
sources of chlorine/uorine compounds.
• Allow minimum clearances from the enclosure for
re protection, proper operation, and service access
(see unit clearances). These clearances must be
permanently maintained.
• When the unit is heating, the temperature of the return
air entering the unit must be between 50° F and 100° F.
GrOunD level installatiOns Only:
• When the unit is installed on the ground adjacent
to the building, a level concrete (or equal) base is
recommended. Prepare a base that is 3” larger than
the package unit footprint and a minimum of 3” thick.
• The base should also be located where no runoff of
water from higher ground can collect in the unit.
rOOf tOP installatiOns Only:
•To avoid possible property damage or personal injury,
the roof must have sufcient structural strength to
carry the weight of the unit(s) and snow or water
loads as required by local codes. Consult a structural
engineer to determine the weight capabilities of the
roof.
• The unit may be installed directly on wood oors or on
Class A, Class B, or Class C roof covering material.
• To avoid possible personal injury, a safe, at surface
for service personnel should be provided.
•As indicated on the unit data plate, a minimum
clearance of 36” to any combustible material is
required on the furnace access side of the unit. All
combustible materials must be kept out of this area.
•This 36” clearance must also be maintained to
insure proper combustion air and ue gas ow. The
combustion air intake and furnace ue discharge must
not be blocked for any reason, including blockage by
snow.
•Adequate clearances from the unit to any adjacent
public walkways, adjacent buildings, building
openings or openable windows must be maintained
in accordance with National Codes.
unit PreCautiOns
• Do not stand or walk on the unit.
• Do not drill holes anywhere in panels or in the base
frame of the unit (except where indicated). Unit
access panels provide structural support.
• Do not remove any access panels until unit has been
installed on roof curb or eld supplied structure.
• Do not roll unit across nished roof without prior
approval of owner or architect.
• Do not skid or slide on any surface as this may
damage unit base. The unit must be stored on a at,
level surface. Protect the condenser coil because
it is easily damaged.
rOOf Curb installatiOns Only:
Before installing this unit...
IMPORTANT NOTE: This unit has been equipped with a
shipping brace under the compressor section that MUST BE
REMOVED before installing the unit on a roof curb.
Please follow the instructions below to remove brace.
WHEN UNIT IS SUSPENDED, BOARDS AND SHIPPING BRACE WILL DROP WHEN
SCREWS ARE REMOVED. TOPREVENT PERSONAL INJURY, STAND CLEAR.
REMOVE FORK HOLE BRACKETS, BOARDS AND SHIPPING BRACE FROM BOTTOM
OF UNIT BEFORE PLACING UNIT ONTO CURB.
CAUTION
1. Remove wooden struts and shipping brace per
installation instructions. The struts are located in
the fork holes and are used to protect the unit from
damage while lifting with forks. The shipping brace
is located underneath the unit (under compressors).
Also remove the fork hole brackets as shown in the
following gure.
2. Locate and remove the end brackets as shown in the
following graphic.

5
LIFT OVER APPROXIMATE
CENTER OF UNIT
SPREADER BARS
MUST BE USED WITH
LIFTING STRAPS THAT
ARE LESS THAN 16
FEET L ONG
REMOVE 2 BRACKETS
ON EACH END TO
REMOVE
WOODEN STRUTS
REMOVE 2 BRACKETS
ON EACH END TO
REMOVE
SHIPPING BRACE
3. Lift unit per the “Rigging Details” section of this
manual, observing all warnings and cautions. When
unit is lifted, boards and shipping brace will drop if
screws have been removed. To avoid injury, STAND
CLEAR.
4. Dispose of the boards and brace appropriately.
Curb installations must comply with local codes and should
be done in accordance with the established guidelines of the
National Roong Contractors Association.
Proper unit installation requires that the roof curb be rmly
and permanently attached to the roof structure. Check for ad-
equate fastening method prior to setting the unit on the curb.
Full perimeter roof curbs are available from the factory and
are shipped unassembled. Field assembly, squaring, leveling
and mounting on the roof structure are the responsibility of
the installing contractor. All required hardware necessary
for the assembly of the sheet metal curb is included in the
curb accessory.
• Sufcient structural support must be determined prior
to locating and mounting the curb and package unit.
• Ductwork must be constructed using industry
guidelines. The duct work must be placed into the
roof curb before mounting the package unit. Our full
perimeter curbs include duct connection frames to be
assembled with the curb. Cantilevered type curbs
are not available from the factory.
• Curb insulation, cant strips, ashing and general
roong material are furnished by the contractor.
The curbs must be supported on parallel sides by roof mem-
bers. The roof members must not penetrate supply and
return duct opening areas as damage to the unit might occur.
NOTE: The unit and curb accessories are designed to
allow vertical duct installation before unit placement. Duct
installation after unit placement is not recommended.
ALL CURBS LOOK SIMILAR. TOAVOID INCORRECT CURB
POSITIONING, CHECK JOB PLANS CAREFULLY AND VERIFY MARKINGS
ON CURB ASSEMBLY. INSTRUCTIONS MAY VARY IN CURB STYLES AND
SUPERSEDES INFORMATION SHOWN.
CAUTION
See the manual shipped with the roof curb for assembly and
installation instructions.
CLEARANCES
75"
48"
48"
6" 36" MINI MUM
ROOF OVERHANG
*In situations that have multiple units, a 48” minimum clearance
is required between the condenser coils.
UNIT CLEARANCES
Adequate clearance around the unit should be kept for safety,
service, maintenance, and proper unit operation. A clearance
of 75” on the service side of the unit is recommended to fa-
cilitate possible blower assembly, shaft, wheel replacement,
coil, heat exchanger, electric heat and gas furnace removal.
This unit must not be installed beneath any obstruction. This
unit should be installed remote from all building exhausts to
inhibit ingestion of exhaust air into the unit’s fresh air intake.
TOPREVENT POSSIBLE EQUIPMENT DAMAGE, PROPERTY DAMAGE,
PERSONAL INJURY OR DEATH, THE FOLLOWING BULLET POINTS MUST
BE OBSERVED WHEN INSTALLING THE UNIT.
WARNING

6
.
NOTE: 15 & 20 ton models have 3 fans.
25 ton models have 2 fans.
INSULATED
PANELS
Roof Curb Installation
ROOF CURB POST-INSTALLATION CHECKS
After installation, check the top of the curb, duct connection
frame and duct anges to make sure gasket has been ap-
plied properly. Gasket should be rmly applied to the top
of the curb perimeter, duct anges and any exposed duct
connection frame. If gasket is loose, re-apply using strong
weather resistant adhesive.
Protrusion
Inspect curb to ensure that none of the utility services (elec-
tric) routed through the curb protrude above the curb.
I F PROTRUSIONS EXIST , DO NOT ATTEMPT TO SET UNIT ON CURB .
I
NFORMATION SHOWN .
CAUTION
ROOF TOP DUCT CONNECTIONS
Install all duct connections on the unit before placing the
unit on rooftop.
RIGGING DETAILS
T O
PREVENT PROPERTY DAMAGE , THE UNIT SHOULD REMAIN IN AN
UPRIGHT POSITION DURING ALL RIGGING AND MOVING OPERATIONS .
T
O FACILITATE LIFTING AND MOVING WHEN A CRANE IS USED , PLACE
THE UNIT IN AN ADEQUATE CABLE SLING .
WARNING
D
O
NOT LIFT UNITS TWO AT A TIME . P ROVISIONS FOR FORKS HAVE BEEN
INCLUDED IN THE UNIT BASE FRAME . M INIMUM FORK LENGTH IS 72” TO
PREVENT DAMAGE TO THE UNIT .
CAUTION
Provisions for forks have been included in the unit base
frame. No other fork locations are approved.
T O PREVENT POSSIBLE EQUIPMENT DAMAGE , PROPERTY DAMAGE ,
PERSONAL INJURY OR DEATH , THE FOLLOWING BULLET POINTS MUST BE
OBSERVED
WHEN INSTALLING THE UNIT .
WARNING
• Unit must be lifted by the four lifting holes located at
the base frame corners.
• Lifting cables should be attached to the unit with
shackles.
• The distance between the crane hook and the top of
the unit must not be less than 60”.
• Two spreader bars must span over the unit to prevent
damage to the cabinet by the lift cables. Spreader
bars must be of sufcient length so that cables do
not come in contact with the unit during transport.
Remove wood struts mounted beneath unit base
frame before setting unit on roof curb. These struts
are intended to protect unit base frame from fork lift
damage. Removal is accomplished by extracting the
sheet metal retainers and pulling the struts through
the base of the unit. Refer to rigging label on the unit.
Important:If using bottom discharge with roof curb, ductwork
should be attached to the curb prior to installing the unit.
Ductwork dimensions are shown in Roof Curb Installation
Instructions.
Refer to the Roof Curb Installation Instructions for proper
curb installation. Curbing must be installed in compliance
with the National Roong Contractors Association Manual.
Lower unit carefully onto roof mounting curb. While rigging
unit, center of gravity will cause condenser end to be lower
than supply air end.

7
WHEN UNIT IS SUSPENDED, BOARDS AND SHIPPING BRACE WILL DROP WHEN
SCREWS ARE REMOVED. TOPREVENT PERSONAL INJURY, STAND CLEAR.
REMOVE FORK HOLE BRACKETS, BOARDS AND SHIPPING BRACE FROM BOTTOM
OF UNIT BEFORE PLACING UNIT ONTO CURB.
CAUTION
To assist in determining rigging requirements, unit weights
are shown as follows:
COMPRESSOR 1
COMPRESSOR 2
CG
EVAPORATORCOILS
A
B
C
XD
Y
CORNER & CENTER OF GRAVITY LOCATIONS
Corn er We i gh t - A 590 644 626
Corn er We i gh t - B 482 525 464
Corn er We i gh t - C 492 504 501
Corn er We i gh t - D 401 412 518
Unit Shipping Weight 2080 2202 2377
Unit Operating Weight 1965 2085 2109
X (Inches) 60" 58" 64.3"
Y (Inches) 40" 40" 41.3"
DATA
15 Tons
20 Tons
25 Tons
DCC Weights
(lbs)
NOTE: These weights are without accessories installed.
T O PREVENT SEVERE DAMAGE TO THE BOTTOM OF THE UNIT , DO NOT
FORK LIFT UNIT AFTER WOOD STRUTS HAVE BEEN REMOVED .
CAUTION
Bring condenser end of unit into alignment with the curb.
With condenser end of the unit resting on curb member
and using curb as a fulcrum, lower opposite end of the unit
until entire unit is seated on the curb. When a rectangular
cantilever curb is used, care should be taken to center the
unit. Check for proper alignment and orientation of supply
and return openings with duct.
riGGinG remOval
T O PREVENT DAMAGE TO THE UNIT , DO NOT ALLOW CRANE HOOKS AND
SPREADER BARS TO REST ON THE ROOF OF THE UNIT .
CAUTION
Remove spreader bars, lifting cables and other rigging
equipment.
ELECTRICAL WIRING
HIGH VOLTAGE !
D ISCONNECT ALL POWER BEFORE SERVICING OR
INSTALLING THIS UNIT . M ULTIPLE POWER SOURCES MAY
BE PRESENT . F AILURE TO DO SO MAY CAUSE PROPERTY
DAMAGE , PERSONAL INJURY OR DEATH .
WARNING
HIGH VOLTAGE !
T O AVOID PERSONAL INJURY OR DEATH DUE TO ELECTRICAL
SHOCK , DO NOT TAMPER WITH FACTORY WIRING . T HE
INTERNAL POWER AND CONTROL WIRING OF THESE UNITS
ARE FACTORY - INSTALLED AND HAVE BEEN THOROUGHLY
TESTED PRIOR TO SHIPMENT . C ONTACT YOUR LOCAL
REPRESENTATIVE IF ASSISTANCE IS REQUIRED .
WARNING
T O PREVENT DAMAGE TO THE WIRING , PROTECT WIRING FROM SHARP
EDGES . F OLLOW NATIONAL ELECTRICAL CODE AND ALL LOCAL CODES
AND ORDINANCES . D O NOT ROUTE WIRES THROUGH REMOVABLE
ACCESS PANELS .
CAUTION
C ONDUIT AND FITTINGS MUST BE WEATHER - TIGHT TO PREVENT WATER
ENTRY INTO THE BUILDING .
CAUTION
For unit protection, use a fuse or HACR circuit breaker that is
in excess of the circuit ampacity, but less than or equal to the
maximum overcurrent protection device. DO NOT EXCEED
THE MAXIMUM OVERCURRENT DEVICE SIZE SHOWN
ON UNIT DATA PLATE.
All line voltage connections must be made through weath-
erproof ttings. All exterior power supply and ground wiring
must be in approved weatherproof conduit.
The main power supply wiring to the unit and low voltage
wiring to accessory controls must be done in accordance with
these instructions, the latest edition of the National Electrical
Code (ANSI/NFPA 70), and all local codes and ordinances.
The main power supply shall be three-phase, three wire.
The unit is factory wired for the voltage shown on the unit’s
data plate.
NOTE: If supply voltage is 208V, all leads on primary of
transformer(s) must be moved from the 230V to the 208V tap.

8
Main power wiring should be sized for the minimum circuit
ampacity shown on the unit’s data plate. Size wires in
accordance with the ampacity tables in Article 310 of the
National Electrical Code. If long wires are required, it may
be necessary to increase the wire size to prevent excessive
voltage drop. Wires should be sized for a maximum of 3%
voltage drop.
T O AVOID PROPERTY DAMAGE OR PERSONAL INJURY DUE TO FIRE , USE
ONLY COPPER CONDUCTORS .
CAUTION
T O PREVENT IMPROPER AND DANGEROUS OPERATION DUE TO
WIRING
ERRORS , LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING
CONTROLS . V ERIFY PROPER OPERATION AFTER SERVICING .
CAUTION
NOTE: A weather-tight disconnect switch, properly sized
for the unit total load, must be eld or factory installed. An
external eld supplied disconnect may be mounted on the
exterior panel.
Ensure the data plate is not covered by the eld-supplied
disconnect switch.
• Some disconnect switches are not fused. Protect the
power leads at the point of distribution in accordance
with the unit’s data plate.
• The unit must be electrically grounded in accordance
with local codes or, in the absence of local codes,
with the latest edition of the National Electrical Code
(ANSI-NFPA 70). A ground lug is provided for this
purpose. Size grounding conductor in accordance
with Table 250-95 of the National Electrical Code.
Do not use the ground lug for connecting a neutral
conductor.
• Connect power wiring to the electrical middle
contactor within the main control box of power block,
if equipped.
Low Voltage
Terminal Strip
Thermostat wiring
for all units
connect to low
voltage strip
Ground
Lug
Line voltage connects
to power block on
Coolers, 230V Gas
Packs, and 2 Speed
Models.
Line voltage connects
to middle contactor
on 460v and 575v
Gas Packs
(or power block
if equipped)
Power Block -
(Coolers, 230V Gas
Packs, and 2 Speed
Models)
Field wiring enters
from this direction
POWER AND LOW VOLTAGE BLOCK LOCATIONS
Route field
control wiring
through
grommet
Field connec�on for
control wiring
at terminal block
Field
connec�on
for
line voltage
Ground Lug
Field wiring
enters from
this direc�on
LOW
HIGH
25 TON POWER AND LOW VOLTAGE BLOCK LOCATIONS
NOTE: Depending on the options installed, the location of the
components may vary in some models.

9
F AILURE OF UNIT DUE
TO OPERATION ON IMPROPER LINE VOLTAGE
OR WITH EXCESSIVE PHASE UNBALANCE CONSTITUTES PRODUCT
ABUSE AND IS NOT COVERED BY THE WARRANTY . I T MAY CAUSE
SEVERE DAMAGE TO THE UNIT ELECTRICAL COMPONENTS .
WARNING
Areas Without Convenience Outlet
It is recommended that an independent 115V power source
be brought to the vicinity of the roof top unit for portable lights
and tools used by the service mechanic.
NOTE: Refer to local codes for requirements. These outlets
can also be factory installed.
units installeD On rOOf tOPs
Main power and low voltage wiring may enter the unit through
the side or through the roof curb. Install conduit connectors
at the desired entrance locations. External connectors must
be weatherproof. All holes in the unit base must be sealed
(including those around conduit nuts) to prevent water leak-
age into building. All required conduit and ttings are to be
eld supplied.
Supply voltage to roof top unit must not vary by more than
10% of the value indicated on the unit’s data plate. Phase
voltage unbalance must not exceed 2%. Contact your local
power company for correction of improper voltage or phase
unbalance.
ELECTRICAL ENTRANCE LOCATIONS
Unit is equipped with Single Point Power Block and Low
Voltage Block.
lOw vOltaGe COntrOl wirinG
1. A 24V thermostat must be installed for unit
operation. It may be purchased with the unit or eld
-supplied. Thermostats may be programmable or
electromechanical as required.
2. Locate thermostat or remote sensor in the conditioned
space where it will sense average temperature. Do
not locate the device where it may be directly exposed
to supply air, sunlight or other sources of heat. Follow
installation instructions packaged with the thermostat.
3. Use #18 AWG wire for 24V control wiring runs not
exceeding 75 feet. Use #16 AWG wire for 24V control
wiring runs not exceeding 125 feet. Use #14 AWG
wire for 24V control wiring runs not exceeding 200
feet. Low voltage wiring may be National Electrical
Code (NEC) Class 2 where permitted by local codes.
4. Route thermostat wires from sub-base terminals to
the unit. Control wiring should enter through the duct
panel (dimple marks entrance location). Connect
thermostat and any accessory wiring to low voltage
terminal block TB1 in the main control box.
NOTE: Field-supplied conduit may need to be installed
depending on unit/curb conguration. Use #18 AWG solid
conductor wire whenever connecting thermostat wires to
terminals on sub-base. DO NOT use larger than #18 AWG
wire. A transition to #18 AWG wire may be required before
entering thermostat sub-base.
NOTE: Refer to unit wiring diagrams for thermostat hookups.
The minimum supply pressure should not vary from that
shown in the table above because this could prevent the
unit from having dependable ignition. In addition, gas input
to the burners must not exceed the rated input shown on the
rating plate. Overring of the unit could result in premature
heat exchanger failure.
CIRCULATING AIR AND FILTERS
DuCtwOrk
The supply duct from the unit through a wall may be installed
without clearance. However, minimum unit clearances must
be maintained (see “Clearances” section). The supply duct
should be provided with an access panel large enough to
inspect the air chamber downstream of the heat exchanger.
A cover should be tightly attached to prevent air leaks.
Ductwork dimensions are shown in the roof curb installation
manual.
If desired, supply and return duct connections to the unit
may be made with exible connections to reduce possible
unit operating sound transmission.
CONDENSATE DRAIN CONNECTION
COnDensate Drain COnneCtiOn
A 1” female NPT drain connection is supplied on the end of
the condensate pan, with an alternative connection on the
bottom of the pan. An external trap must be installed for
proper condensate drainage
STANDARD
SIDE DRAIN
DRAIN PLUG
(FACTORY-INSTALLED)
Drain Pan (Side View)

10
NOTE: Trap should be deep enough to offset maximum
unit static difference. A minimum 4” trap is recommended.
Drain Plug Roof Curb
See NOTE
Base Rail
Open Vent 2” Min
DRAIN CONNECTION
Install condensate drain trap as shown. Use 1” drain line and
ttings or larger. Do not operate without trap.
hOrizOntal Drain
Drainage of condensate directly onto the roof may be ac-
ceptable; refer to local code. It is recommended that a small
drip pad of either stone, mortar, wood or metal be provided
to prevent any possible damage to the roof.
CleaninG
Due to the fact that drain pans in any air conditioning unit
will have some moisture in them, algae and fungus will
grow due to airborne bacteria and spores. Periodic clean-
ing is necessary to prevent this build-up from plugging the
drain.
STARTUP, ADJUSTMENTS, AND CHECKS
HIGH VOLTAGE!
T O AVOID PERSONAL INJURY OR DEATH DUE TO
ELECTRICAL SHOCK , BOND THE FRAME OF THIS UNIT TO
THE BUILDING ELECTRICAL GROUND BY USE OF THE
GROUNDING TERMINAL PROVIDED OR OTHER
ACCEPTABLE MEANS . D ISCONNECT ALL POWER BEFORE
SERVICING OR INSTALLING THIS UNIT .
WARNING
Pre-startuP instruCtiOns
T O PREVENT
PROPERTY DAMAGE OR PERSONAL
INJURY , D O NOT START
THE UNIT UNTIL ALL NECESSARY PRE
- CHECKS AND TEST HAVE BEEN
PERFORMED .
CAUTION
Prior to the beginning of Startup, Adjustments, and Checks
procedures, the following steps should be completed in the
building.
MOVING MACHINERY HAZARD!
T O PREVENT POSSIBLE PERSONAL INJURY OR DEATH , DISCONNECT
POWER TO THE UNIT AND PADLOCK IN THE “OFF” POSITION BEFORE
SERVICING FANS .
WARNING
heatinG startuP
On new installations, or if a major component has been re-
placed, the operation of the unit must be checked.
Check unit operation as outlined in the following instructions.
If any sparking, odors, or unusual sounds are encountered,
shut off electrical power and recheck for wiring errors, or
obstructions in or near the blower motors. Duct covers must
be removed before operating unit.
The Startup, Adjustments, and Checks procedure provides
a step-by-step sequence which, if followed, will assure the
proper startup of the equipment in the minimum amount of
time. Air balancing of duct system is not considered part of
this procedure. However, it is an important phase of any air
conditioning system startup and should be performed upon
completion of the Startup, Adjustments, and Checks proce-
dure. The Startup, Adjustments, and Checks procedure at
outside ambients below 55°F should be limited to a readiness
check of the refrigeration system with the required nal check
and calibration left to be completed when the outside ambient
rises above 55°F.
temPOrary heatinG OrCOOlinG
If the unit is to be used for temporary heating or cooling, a
“Startup, Adjustments, and Checks” must rst be performed
in accordance with this manual. After the machines are used
for temporary heating or cooling, inspect the coils, fans, and
motors for unacceptable levels of construction dust and dirt
and install new lters.
COntraCtOr resPOnsibility
The installing contractor must be certain that:
• All supply and return air ductwork is in place, properly
sealed and corresponds with installation instructions.
• All thermostats are mounted and wired in accordance
with installation instructions.
• All electric power, all gas, hot water or steam line
connections, and the condensate drain installation
have been made to each unit on the job. These
main supply lines must be functional and capable
of operating all units simultaneously.
• All lters are in place.
rOOf Curb installatiOn CheCk
Inspect the roof curb for correct installation. The unit and
curb assembly should be level. Inspect the ashing of the
roof mounting curb to the roof, especially at the corners, for
good workmanship. Also check for leaks around gaskets.
Note any deciencies in a separate report and forward to
the contractor.

11
ObstruCtiOns, fan ClearanCe anD wirinG
Remove any extraneous construction and shipping materials
that may be found during this procedure. Rotate all fans
manually to check for proper clearances and that they ro-
tate freely. Check for bolts and screws that may have jarred
loose during shipment to the job site. Retighten if necessary.
Re-tighten all electrical connections.
fielD DuCt COnneCtiOns
Verify that all duct connections are tight and that there is no
air bypass between supply and return.
filter seCtiOn CheCk
Remove lter section access panels and check that lters
are properly installed. Note airow arrows on lter frames.
Pre-startuP PreCautiOns
It is important to your safety that the unit has been properly
grounded during installation. Check ground lug connection in
main control box for tightness prior to closing circuit breaker
or disconnect switch. Verify that supply voltage on line side
of disconnect agrees with voltage on unit identication plate
and is within the utilization voltage range as indicated in
Appendix C Electrical Data.
System Voltage - That nominal voltage value assigned to
a circuit or system for the purpose of designating its voltage
class.
Nameplate Voltage - That voltage assigned to a piece of
equipment for the purpose of designating its voltage class
and for the purpose of dening the minimum and maximum
voltage at which the equipment will operate.
Utilization Voltage - The voltage of the line terminals of the
equipment at which the equipment must give fully satisfactory
performance. Once it is established that supply voltage will
be maintained within the utilization range under all system
conditions, check and calculate if an unbalanced condition
exists between phases. Calculate percent voltage unbalance
as follows:
Three Phase Models Only
3) PERCENT VOLTAGE
UNBALANCE
2) MAXIMUM VOLTAGE DEVIATIONS
FROM AVERAGE VOLTAGE
1) AVERAGE VOLTAGE
HOW TO USE THE FORMULA:
EXAMPLE: With voltage of 220, 216, and 213
1) Average Voltage = 220+216+213=649 / 3 = 216
2) Maximum Voltage Deviations from Average Voltage = 220 - 216 = 4
3) Percent Voltage Unbalance = 100 x = = 1.8%
Percent voltage unbalance MUST NOT exceed 2%.
4
216
400
216
= 100 X
AIR FLOW ADJUSTMENTS
The drive on the supply fan is typically set in the middle of
the RPM range. The drive motor sheave pitch diameter is
eld adjustable for the required airow. Refer to the following
“Drive Adjustments” section.
When the nal adjustments are complete, the current draw of
the motor should be checked and compared to the full load
current rating of the motor. The amperage must not exceed
the service factor stamped on the motor nameplate. The total
airow must not be less than that required for operation of
the electric heaters or the furnace.
If an economizer is installed, check the unit operating bal-
ance with the economizer at full outside air and at minimum
outside air. Upon completion of the air ow balancing, we
recommend replacing the variable pitched motor sheave with
a properly-sized xed sheave. A matching xed sheave will
provide longer belt and bearing life and vibration free opera-
tion. Initially, it is best to have a variable pitched motor sheave
for the purpose of airow balancing, but once the balance
has been achieved, xed sheaves maintain alignment and
minimize vibration more effectively.
NOTE: Airow setting below 300 CFM/ton is not recom-
mended, as evaporator freezing or poor unit performance is
possible. For 2-speed models, airow adjustments must be
made with the evaporator fan motor operating at high speed
(in 2nd stage cooling or in heat mode).
set evaPOratOr fan rPm
Actual RPM’s must be set and veried with a tachometer or
strobe light. Refer to Appendices A and B for basic unit fan
RPM. Refer also to “Airow” section of this manual. With
disconnect switch open, disconnect thermostat wires from
terminals Y and W. This will prevent heating and mechanical
cooling from coming on. Place a jumper wire across termi-
nals R and G at TB1 terminal block. Close disconnect switch;
evaporator fan motor will operate so RPM can be checked.
evaPOratOr fan rOtatiOn CheCk (three Phase mODels Only)
Check that fan rotates clockwise when viewed from the drive
side of unit and in accordance with rotation arrow shown on
blower housing. If it does not, reverse the two incoming pow-
er cables at Single Point Power Block. In this case, repeat
bearing check.
Do not attempt to change load side wiring. Internal wiring
assures all motors and compressors will rotate in correct
direction once evaporator fan motor rotation check has been
made.
eleCtriCal inPut CheCk
Make preliminary check of evaporator fan ampere draw and
verify that motor nameplate amps are not exceeded. A nal
check of amp draw should be made upon completion of air
balancing of the duct system (see Appendix B).
bearinG CheCk
Prior to energizing any fans, check and make sure that all
setscrews are tight so that bearings are properly secured
to shafts.
tensiOn anD aliGnment aDjustment
Correct belt tension is very important to the life of your belt.
Too loose a belt will shorten its life; too tight, premature motor
and bearing failure will occur. Check you belt drive for ade-
quate “run-in” belt tension by measuring the force required
to deect the belt at the midpoint of the span length. Belt
tension force can be measured using a belt tension gauge,
available through most belt drive manufacturers.

12
SPANLENGTHt
*DEFLECTION
FORCE
h
C
d H
D
*Apply force to the center of the span.
t = Span length, inches
C = Center distance, inches
D = Larger sheave diameter, inches
d = Smaller sheave diameter, inches
h = Deection height, inches
DRIVE BELT TENSION ADJUSTMENT
RECOMMENDED POUNDS OF FORCE PER BELT
New V-belts will drop rapidly during the rst few hours of
use. Check tension frequently during the rst 24 hours of
operation. Tension should fall between the minimum and
maximum force. To determine the deection distance from a
normal position, measure the distance from sheave to sheave
using a straightedge or a cord. This is your reference line.
On multiple belt drives, an adjacent undeected belt can be
used as a reference.
MOTOR SHEAVE ADJUSTMENTS
vl, vm& 2vP variable PitCh key tyPe mOtOr sheaves
The driving and driven motor sheaves should be in alignment
with each other and the shafts parallel.
vl& vmsheaves aDjustment
1. Loosen set screw “B” using a 5/32” Allen key.
2. Making half or full turns from closed position, adjust
sheave pitch diameter for desired speed. DO NOT
OPEN MORE THAN SIX FULL TURNS.
3. Tighten set screw “B” securely over at.
4. Carefully put on belts and adjust belt tension. DO
NOT FORCE BELTS OVER GROOVES.
5. Ensure all keys are in place and the set screws tight
before starting drive. Recheck set screws and belt
tension after 24 hours service.
NOTE: Future adjustments should be made by loosening the
belt tension and increasing or decreasing the pitch diameter
of the sheave by half or full turns as required. Readjust belt
tension before starting drive.
C
B
VL & VM
NOTE: Do not operate sheave with ange projecting beyond
the hub end.
refriGeratiOn system
The unit is equipped with a thermal expansion valve as a
metering device.
Ensure the hold-down bolts on the compressor are secure
and have not vibrated loose during shipment. Check that
vibration grommets have been installed. Visually check all
piping for damage and leaks; repair if necessary. The entire
system has been factory charged and tested, making it un-
necessary to eld charge. Factory charges are shown on the
unit’s namelate. To conrm charge levels or, if a leak occurs
and charge needs to be added to the system, it is recom-
mended to evacuate the system and recharge refrigerant to
unit nameplate specications. This unit has been rated in the
cooling mode at the AHRI rated conditions of: Indoor (80°db
/ 67°wb) and outdoor (95°db). While operating at this condi-
tion, the subcooling should range from 12° to 15° F for each
refrigeration circuit, for 15 and 20 ton models. Subcooling for
25 ton models should be from 16° to 19° F for circuit 1, and
from 12° to 15° F for circuit 2.
start-uPPrOCeDure anD CheCklist
Begin with power turned off at all disconnects.
1. Turn thermostat system switch to “Cool,” and fan
switch to “Auto” and turn temperature setting as high
as it will go.
2. Inspect all registers and set them to the normal open
position.
3. Turn on the electrical supply at the disconnect.
4. Turn the fan switch to the “ON” position. The blower
should operate in low speed after a 7-second delay.
5. Turn the fan switch to “Auto” position. The blower
should stop after a 65 second delay.
BELT DRIVE Used Ne w
15 Ton B, BX Standard 4.3 to 5.5
5.5 ±.5 8.2 ±.5 1/4 ±1/16
20 Ton
25 Ton
B, BA
Standard
4.3 to 5.5
5.5 ±.5
8.2 ±.5
1/4 ±1/16
MODEL
TYPE
DEFLECTION
FORCE (lbs)
SHEAVE
DIAMETER
(in)
DEFLECTION
(in)

13
Final System Checks
10.Check to see if all supply and return air grilles are
adjusted and the air distribution system is balanced
for the best compromise between heating and cooling.
11.Check for air leaks in the ductwork. See Sections on
Air Flow Adjustments.
12.Make sure the unit is free of “rattles”, and the tubing
in the unit is free from excessive vibration. Also make
sure tubes or lines are not rubbing against each other
or sheet metal surfaces or edges. If so, correct the
trouble.
13.Set the thermostat at the appropriate setting for
cooling and heating or automatic change over for
normal use.
14.Be sure the Owner is instructed on the unit operation,
lter, servicing, correct thermostat operation, etc.
MAINTENANCE
Preventive maintenance is the best way to avoid unnecessary
expense and inconvenience. Have this system inspected at
regular intervals by qualied service personnel, at least twice
a year. Routine maintenance should cover the following items:
6. Slowly lower the cooling temperature until rst stage
COOL (LOW COOL) starts. The blower, both fans,
and rst stage compressor should now be operating.
The blower should be operating in low speed at 1175
motor rpm. Allow the unit to run 10 minutes, make
sure cool air is being supplied by the unit.
7. Lower the cooling temperature further until second
stage COOL (HIGH COOL) starts. The blower, both
fans, and both compressors should now be operating.
The blower should be operating in high speed at 1775
motor rpm. Allow the unit to run 10 minutes, make
sure cool air is being supplied by the unit.
8. Turn the temperature setting to the highest position,
stopping the unit. The indoor blower will continue to
run for 65 seconds.
9. Turn the thermostat system switch to “OFF” and
disconnect all power when servicing the unit.
LOW AMBIENT COOLING NOTES:
For 15 and 20 ton models: While in the Cooling Mode,
to prevent frost from forming on the evaporator while the
unit is operating in outdoor temperatures of 65°F or lower,
it is recommended that a low ambient kit is used. This
is strongly recommended for 2 Speed models due to the
lower airow while in the rst stage of cooling. To further
protect the compressor from damage during low ambient
conditions, a Freezestat Kit (FSK01) can be added that
turns the compressor off when the evaporator temperature
drops too low.
For 25 ton models: The 25 ton units are equipped with a
control that shuts off one condenser fan when the outdoor
temperature is 44° F or below. This is to assist low ambient
cooling down to 24°. An optional Low Ambient kit, LAKT05,
is required below 24° which will enable reliable cooling to
occur to a minimum ambient temperature of zero °F.
HIGH VOLTAGE!
DISCONNECT ALL POWER BEFORE SERVICING OR
INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY
BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY
DAMAGE, PERSONAL INJURY OR DEATH.
WARNING
HIGH VOLTAGE!
DISCONNECT ALL POWER BEFORE SERVICING OR
INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY
BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY
DAMAGE, PERSONAL INJURY OR DEATH.
WARNING
T O PREVENT PERSONAL INJURY OR DEATH DUE TO IMPROPER
INSTALLATION ,
ADJUSTMENT , ALTERATION ,
SERVICE OR
MAINTENANCE , REFER TO THIS MANUAL . F OR ADDITIONAL
ASSISTANCE OR INFORMATION , CONSULT
A QUALIFIED INSTALLER ,
SERVICE AGENCY OR THE GAS SUPPLIER .
WARNING
S HEET METAL PARTS , SCREWS , CLIPS AND SIMILAR ITEMS INHERENTLY
HAVE SHARP EDGES , AND IT IS NECESSARY THAT THE INSTALLER AND
SERVICE PERSONNEL EXERCISE CAUTION .
CAUTION

14
1. Tighten all belts, set screws, and wire connections.
2. Clean evaporator and condenser coils mechanically
or with cold water, if necessary. Usually any fouling
is only matted on the entering air face of the coil and
can be removed by brushing.
3. Lubricate motor bearings.
4. Align or replace belts as needed.
5. Replace lters as needed (see below).
6. Check for blockage of condensate drain.
7. Check power and control voltages.
8. Check running amperage.
9. Check operating temperatures and pressures.
10. Check and adjust temperature and pressure controls.
11. Check and adjust damper linkages.
12. Check operation of all safety controls.
13. Examine gas furnaces (see below and the User’s
Information Manual).
14. Check condenser fans and tighten set screws.
filters
Every application may require a different frequency of re-
placement of dirty lters. Filters must be replaced at least
every three (3) months during operating seasons.
Dirty lters are the most common cause of inadequate heating
or cooling performance. Filter inspection should be made at
least every two months; more often if necessary because of
local conditions and usage.
Dirty throwaway lters should be discarded and replaced
with a new, clean lter.
Disposable return air lters are supplied with this unit. See the
unit Specication Sheet or Technical Manual for the correct
size and part number. To remove the lters, remove the lter
access panel on return side of the unit.
Cabinet finish maintenanCe
Use a ne grade automotive wax on the cabinet nish to
maintain the nish’s original high luster. This is especially
important in installations with extended periods of direct
sunlight.
Clean Outside Coil (Qualified Servicer Only)
The coil with the outside air owing over it should be inspect-
ed annually and cleaned as frequently as necessary to keep
the nned areas free of lint, hair and debris.
Condenser Fans
Bearings on the condenser fan motors are permanently
lubricated. No additional oiling is required.
Lubrication
The fan shaft bearings and the supply fan motor have grease
ttings that should be lubricated during normal maintenance
checks.
Functional Parts
Refer to the unit Parts Catalog for a list of functional parts.
Parts are available from your distributor.
CAUTION
TO PREVENT PROPERTY DAMAGE DUE TO FIRE AND LOSS OF
EQUIPMENT EFFICIENCY OR EQUIPMENT DAMAGE DUE TO DUST AND LINT
BUILD UP ON INTERNAL PARTS, NEVER OPERATE UNIT WITHOUT AN AIR
FILTER INSTALLED IN THE RETURN AIR SYSTEM.

15
APPENDIX A BLOWER PERFORMANCE DATA
BELT DRIVE - STANDARD
NOTES:
High static airow requires installation of high static kit.
Unit factory shipped with sheave set at 2.5 turns open.
Air ow tables represent dry coil with lters installed; SCFM correction factor for wet coil is 4%.
CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP
0.2 --- --- --- --- --- --- --- --- --- --- 7203 2.18 6718 1.94
0.4 --- --- --- --- --- --- 7306 2.54 6777 2.14 6257 1.80 5711 1.66
0.6 --- --- 7477 2.97 6899 2.51 6323 2.10 5716 1.72 5103 1.39 ---
0.8 7112 2.96 6467 2.46 5795 2.01 5101 1.61 --- --- --- --- --- ---
1.0 5983 2.38 5190 1.89 --- --- --- --- --- --- --- --- --- ---
1.2 4426 1.71 --- --- --- --- --- --- --- --- --- --- --- ---
CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP
0.2 --- --- --- --- --- --- --- --- --- --- --- --- 9664 4.05
0.4 --- --- --- --- --- --- --- --- 9570 4.08 9197 3.82 8702 3.51
0.6 --- --- --- --- --- --- 9038 3.82 8460 3.46 7949 3.14 --- ---
0.8 --- --- 8171 2.93 7630 3.70 7068 2.79 --- --- --- --- --- ---
1.0 --- --- 7901 2.85 7203 3.42 --- --- --- --- --- --- --- ---
1.2 7344 4.35 --- --- --- --- --- --- --- --- --- --- --- ---
DCC180 STANDARD TWO-SPEED BELT DRIVE AT HIGH SPEED
ESP, In H
2
O
TURNS OPEN
0
1
2
3
4
5
6
DCC240 STANDARD TWO-SPEED BLET DRIVE AT HIGH SPEED
ESP, In H
2
O
TURNS OPEN
0
1
2
3
4
5
6
CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP
0.2 --- --- --- --- --- --- 10369 5.07 9748 4.41 9191 3.82 8683 3.28
0.4 --- --- 10802 6.00 10125 5.30 9484 4.62 8905 4.01 8386 3.46 7913 2.95
0.6 10519 6.20 9821 5.47 9193 4.81 8599 4.18 8062 3.61 7582 3.10 7143 2.63
0.8 9482 5.60 8839 4.93 8261 4.32 7714 3.74 7220 3.21 6777 2.74 --- ---
1.0 8446 5.01 7857 4.39 7329 3.83 6829 3.30 --- --- --- --- --- ---
1.2 7409 4.41 6876 3.85 --- --- --- --- --- --- --- --- --- ---
DCC300 STANDARD TWO-SPEED BELT DRIVE AT HIGH SPEED
ESP, In H2O
TURNS OPEN
0
1
2
3
4
5
6

16
APPENDIX A BLOWER PERFORMANCE DATA
BELT DRIVE - HIGH STATIC
NOTES:
High static airow requires installation of high static kit.
Unit factory shipped with sheave set at 2.5 turns open.
Air ow tables represent dry coil with lters installed; SCFM correction factor for wet coil is 4%.
—-—-
CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP
0.8 -6580 4.30
1.0 -6930 5.14 6432 4.53 5908 3.98
1.2 6866 5.52 6382 4.80 5916 4.24 5370 3.68
1.4 6779 5.80 6417 5.22 5914 4.52 5307 3.89
1.6 6685 6.06 6391 5.52 5954 4.90 5288 4.18
1.8 6248 5.75 5782 5.09 5261 4.50
2.0 5664 5.31 5111 4.71
2.2 5053 4.81
CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP
0.8 -8765 6.05 8225 5.38
1.0 -8663 6.43 8040 5.67 7385 4.97
1.2 8978 7.61 8583 6.90 7978 6.00 7395 5.30 6713 4.60
1.4 8845 7.87 8474 7.26 8021 6.52 7393 5.65 6634 4.86
1.6 8356 7.58 7989 6.89 7442 6.13 6610 5.22
1.8 7810 7.18 7227 6.37 6576 5.62
2.0 7080 6.64 6389 5.89
2.2 6316 6.02
CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP CFM BHP
0.6 --- --- --- --- --- --- --- --- --- --- --- --- 11409 7.12
0.8 --- --- --- --- --- --- --- --- --- --- --- --- 10302 6.46
1.0 --- --- --- --- --- --- --- --- --- --- 10159 6.79 9195 5.79
1.2 --- --- --- --- --- --- --- --- 9990 7.11 8961 6.04 8087 5.13
1.4 --- --- --- --- --- --- 9789 7.39 8686 6.25 7763 5.29 6980 4.46
1.6 --- --- --- --- 9543 7.63 8357 6.40 7382 5.39 6566 4.53 --- ---
1.8 --- --- --- --- 7957 6.48 6925 5.41 6077 4.53 --- --- --- ---
2.0 --- --- 7667 6.68 6370 5.34 --- --- --- --- --- --- --- ---
2.2 7280 6.78 --- --- --- --- --- --- --- --- --- --- --- ---
DCC300 HIGH STATIC BELT DRIVE 2 SPEED AT HIGH SPEED
ESP, In
H2O
TURNS OPEN
0
1
2
3
4
5
6
DCC 240 HIGH STATIC BELT DRIVE- 2 SPEED AT HIGH SPEED
ESP
(In W.C.)
TURNS OPEN
0
1
2
3
4
5
DCC180 HIGH STATIC BELT DRIVE - 2 SPEED AT HIGH SPEED
ESP
(In W.C.)
TURNS OPEN
0
1
2
3
4
5

17
—-—- APPENDIX A ECONOMIZER PRESSURE DROP
SCFM 4500 5000 5500 6000 6500 7000 7500 8000 8500 9000 9500 10000
(In WG) 0.15 0.18 0.22 0.27 0.32 0.37 0.42 0.48 0.55 0.61 0.69 0.76
Airflow Pressure Drop of Downflow Economizer for 15 to 25 Ton Rooftop Units (100% Return Air)

18
APPENDIX B ELECTRICAL DATA
RLA LRA RLA LRA QTY HP FLA Type HP FLA Part # KW* FLA FLA MCA
- - - - 82.6 / 82.6
EHK3-31 21.6 / 28.8 60.0 / 69.3 -100 / 112
EHK3-46 32.4 / 43.2 90.1 / 104 -138 / 155
EHK3-60 43.3 / 57.6 120 / 139 -175 / 164
- - -7.2 / 6.5 89.8 / 89.1
EHK3-31 21.6 / 28.8 60.0 / 69.3 7.2 / 6.5 109 / 120
EHK3-46 32.4 / 43.2 90.1 / 104 7.2 / 6.5 147 / 163
EHK3-60 43.3 / 57.6 120 / 139 7.2 / 6.5 184 / 172
- - - -71.4 / 71.4
EHK3-31 21.6 / 28.8 60.0 / 69.3 -86.4 / 98.0
EHK3-46 32.4 / 43.2 90.1 / 104 -124 / 141
EHK3-60 43.3 / 57.6 120 / 139 -161 / 150
- - -7.2 / 6.5 78.6 / 77.9
EHK3-31 21.6 / 28.8 60.0 / 69.3 7.2 / 6.5 95.4 / 106
EHK3-46 32.4 / 43.2 90.1 / 104 7.2 / 6.5 133 / 149
EHK3-60 43.3 / 57.6 120 / 139 7.2 / 6.5 170 / 158
- - - -39.5
EHK4-31 28.8 34.6 -55.2
EHK4-46 43.2 52.0 -76.8
EHK4-60 57.6 69.3 -81.2
---3.3 42.8
EHK4-31 28.8 34.6 3.3 59.3
EHK4-46 43.2 52.0 3.3 81.0
EHK4-60 57.6 69.3 3.3 85.3
-- - - 34.3
EHK4-31 28.8 34.6 -48.7
EHK4-46 43.2 52.0 -70.3
EHK4-60 57.6 69.3 -74.7
- - - 3.3 37.6
EHK4-31 28.8 34.6 3.3 52.8
EHK4-46 43.2 52.0 3.3 74.5
EHK4-60 57.6 69.3 3.3 78.8
- - - - 29.8
EHK7-31 28.8 28.9 -45.5
EHK7-46 43.2 43.4 -63.6
EHK7-60 57.6 57.8 -67.2
- - - 2.6 32.4
EHK7-31 28.8 28.9 2.6 48.8
EHK7-46 43.2 43.4 2.6 66.8
EHK7-60 57.6 57.8 2.6 70.5
- - - - 25.8
EHK7-31 28.8 28.9 -40.5
EHK7-46 43.2 43.4 -58.6
EHK7-60 57.6 57.8 -62.2
- - - 2.6 28.4
EHK7-31 28.8 28.9 2.6 43.8
EHK7-46 43.2 43.4 2.6 61.8
EHK7-60 57.6 57.8 2.6 65.5
2-speed
Belt
Drive
3.00
3.5
7.5
DCC180XXX7V
575-3-60
9.0
78.0
9.0
78.0
3
0.33
0.7
78.0
3
0.33
0.7
2-speed
High
Static
Belt
Drive
7.50
0.33
0.9
2-speed
Belt
Drive
3.00
4.3
DCC180XXX7W
575-3-60
9.0
78.0
9.0
2-speed
High
Static
Belt
Drive
7.50
9.5
DCC180XXX4V
460-3-60
12.2
100.0
12.2
100.0
3
9.1
DCC180XXX4W
460-3-60
12.2
100.0
12.2
100.0
3
0.33
0.9
164.0
3
0.33
2.0
2-speed
Belt
Drive
3.00
0.33
2.0
2-speed
High
Static
Belt
Drive
7.50
20.3
DCC180XXX3V
208/230-3-60
25.0
164.0
25.0
Optional Electric Heat
Optional Powered
Convienience Outlet
Power Supply
DCC180XXX3W
208/230-3-60
25.0
164.0
25.0
164.0
3
Model Number
Electrical
Rating
Compressor
Circuit 1
Compressor
Circuit 2
Outdoor Fan Motor
Indoor Fan Motor
* Electric Heater kW rating: Rated at 240v for 208-230v units; 480v for 460v units

19
APPENDIX B ELECTRICAL DATA
RLA LRA RLA LRA QTY HP FLA Type HP FLA Part # KW* FLA FLA MCA
- - --103 / 103
EHK3-31 21.6 / 28.8 60.0 / 69.3 -103 / 112
EHK3-46 32.4 / 43.2 90.1 / 104 -138 / 155
EHK3-60 43.3 / 57.6 120 / 139 -175 / 164
EHK3-75 54.1 / 72.0 150 / 173 -175 / 199
- - - 7.2 / 6.5 110 / 109
EHK3-31 21.6 / 28.8 60.0 / 69.3 7.2 / 6.5 110 / 120
EHK3-46 32.4 / 43.2 90.1 / 104 7.2 / 6.5 147 / 163
EHK3-60 43.3 / 57.6 120 / 139 7.2 / 6.5 184 / 172
EHK3-75 54.1 / 72.0 150 / 173 7.2 / 6.5 184 / 207
- - --96.4 / 96.4
EHK3-31 21.6 / 28.8 60.0 / 69.3 -96.4 / 104
EHK3-46 32.4 / 43.2 90.1 / 104 -130 / 147
EHK3-60 43.3 / 57.6 120 / 139 -168 / 156
EHK3-75 54.1 / 72.0 150 / 173 -168 / 191
-- - 7.2 / 6.5 104 / 103
EHK3-31 21.6 / 28.8 60.0 / 69.3 7.2 / 6.5 104 / 112
EHK3-46 32.4 / 43.2 90.1 / 104 7.2 / 6.5 139 / 156
EHK3-60 43.3 / 57.6 120 / 139 7.2 / 6.5 177 / 164
EHK3-75 54.1 / 72.0 150 / 173 7.2 / 6.5 177 / 199
- - - -48.1
EHK4-31 28.8 34.6 -55.2
EHK4-46 43.2 52.0 -76.8
EHK4-60 57.6 69.3 -81.2
EHK4-75 72.0 86.6 -98.5
-- - 3.3 51.4
EHK4-31 28.8 34.6 3.3 59.3
EHK4-46 43.2 52.0 3.3 81.0
EHK4-60 57.6 69.3 3.3 85.3
EHK4-75 72.0 86.6 3.3 103
- - - -45.2
EHK4-31 28.8 34.6 -51.6
EHK4-46 43.2 52.0 -73.2
EHK4-60 57.6 69.3 -77.5
EHK4-75 72.0 86.6 -94.9
-- - 3.3 48.5
EHK4-31 28.8 34.6 3.3 55.7
EHK4-46 43.2 52.0 3.3 77.3
EHK4-60 57.6 69.3 3.3 81.7
EHK4-75 72.0 86.6 3.3 99.0
- - - - 38.7
EHK7-31 28.8 28.9 -45.5
EHK7-46 43.2 43.4 -63.6
EHK7-60 57.6 57.8 -67.2
EHK7-75 72.0 72.3 -81.7
-- - 2.6 41.3
EHK7-31 28.8 28.9 2.6 48.8
EHK7-46 43.2 43.4 2.6 66.8
EHK7-60 57.6 57.8 2.6 70.5
EHK7-75 72.0 72.3 2.6 84.9
- - - - 36.4
EHK7-31 28.8 28.9 -42.6
EHK7-46 43.2 43.4 -60.7
EHK7-60 57.6 57.8 -64.3
EHK7-75 72.0 72.3 -78.8
-- - 2.6 39.0
EHK7-31 28.8 28.9 2.6 45.9
EHK7-46 43.2 43.4 2.6 64.0
Model Number
Electrical
Rating
Compressor
Circuit 1
Compressor
Circuit 2
Outdoor Fan Motor
Indoor Fan Motor
Optional Electric Heat
Optional Powered
Convienience Outlet
Power Supply
DCC240XXX3W
208/230-3-60
34.0
240.0
34.0
240.0
3
0.33
2.0
2-speed
High
Static
Belt
Drive
7.50
20.3
DCC240XXX3V
208/230-3-60
34.0
240.0
34.0
240.0
3
0.33
2.0
2-speed
Belt
Drive
5.00
14.0
DCC240XXX4W
460-3-60
16.0
140.0
16.0
140.0
3
0.33
0.9
2-speed
High
Static
Belt
Drive
7.50
9.5
DCC240XXX4V
460-3-60
16.0
140.0
16.0
140.0
3
0.33
0.9
2-speed
Belt
Drive
5.00
6.6
DCC240XXX7W
575-3-60
12.9
107.6
12.9
107.6
3
0.33
0.7
2-speed
High
Static
Belt
Drive
7.50
7.5
DCC240XXX7V
575-3-60
12.9
107.6
12.9
107.6
3
0.33
0.7
2-speed
Belt
Drive
5.00
5.2
* Electric Heater kW rating: Rated at 240v for 208-230v units; 480v for 460v units

20
APPENDIX B ELECTRICAL DATA
RLA LRA RLA LRA QTY HP FLA Type HP FLA Part # KW* FLA FLA MCA
- - - - 138 / 138
EHK3-31 21.6 / 28.8 60.0 / 69.3 -138 / 138
EHK3-46 32.4 / 43.2 90.1 / 104 -139 / 156
EHK3-60 43.3 / 57.6 120 / 139 -176 / 165
EHK3-75 54.1 / 72.0 150 / 173 -176 / 199
- - - 7.2 / 6.5 145 / 144
EHK3-31 21.6 / 28.8 60.0 / 69.3 7.2 / 6.5 145 / 144
EHK3-46 32.4 / 43.2 90.1 / 104 7.2 / 6.5 148 / 164
EHK3-60 43.3 / 57.6 120 / 139 7.2 / 6.5 185 / 173
EHK3-75 54.1 / 72.0 150 / 173 7.2 / 6.5 185 / 208
--- - 138 / 138
EHK3-31 21.6 / 28.8 60.0 / 69.3 -138 / 138
EHK3-46 32.4 / 43.2 90.1 / 104 -139 / 156
EHK3-60 43.3 / 57.6 120 / 139 -176 / 165
EHK3-75 54.1 / 72.0 150 / 173 -176 / 199
-- - 7.2 / 6.5 145 / 144
EHK3-31 21.6 / 28.8 60.0 / 69.3 7.2 / 6.5 145 / 144
EHK3-46 32.4 / 43.2 90.1 / 104 7.2 / 6.5 148 / 164
EHK3-60 43.3 / 57.6 120 / 139 7.2 / 6.5 185 / 173
EHK3-75 54.1 / 72.0 150 / 173 7.2 / 6.5 185 / 208
- - - -56.1
EHK4-31 28.8 34.6 -56.1
EHK4-46 43.2 52.0 -77.6
EHK4-60 57.6 69.3 -81.9
EHK4-75 72.0 86.6 -99.2
- - - 3.3 59.4
EHK4-31 28.8 34.6 3.3 60.1
EHK4-46 43.2 52.0 3.3 81.7
EHK4-60 57.6 69.3 3.3 86.0
EHK4-75 72.0 86.6 3.3 103
-- - -56.1
EHK4-31 28.8 34.6 -56.1
EHK4-46 43.2 52.0 -77.6
EHK4-60 57.6 69.3 -81.9
EHK4-75 72.0 86.6 -99.2
- - - 3.3 59.4
EHK4-31 28.8 34.6 3.3 60.1
EHK4-46 43.2 52.0 3.3 81.7
EHK4-60 57.6 69.3 3.3 86.0
EHK4-75 72.0 86.6 3.3 103
- - - - 44.6
EHK7-31 28.8 28.9 -46.4
EHK7-46 43.2 43.4 -64.5
EHK7-60 57.6 57.8 -68.1
EHK7-75 72.0 72.3 -82.5
- - - 2.6 47.2
EHK7-31 28.8 28.9 2.6 49.6
EHK7-46 43.2 43.4 2.6 67.7
EHK7-60 57.6 57.8 2.6 71.3
EHK7-75 72.0 72.3 2.6 85.8
- - - -44.6
EHK7-31 28.8 28.9 -46.4
EHK7-46 43.2 43.4 -64.5
EHK7-60 57.6 57.8 -68.1
EHK7-75 72.0 72.3 -82.5
- - - 2.6 47.2
EHK7-31 28.8 28.9 2.6 49.6
EHK7-46 43.2 43.4 2.6 67.7
Model Number
Electrical
Rating
Compressor
Circuit 1
Compressor
Circuit 2
Outdoor Fan Motor
Indoor Fan Motor
Optional Electric Heat
Optional Powered
Convienience Outlet
Power Supply
DCC300XXX3W
208/230-3-60
48.1
245.0
48.1
245.0
2
1.00
4.2
2-speed
High
Static
Belt
Drive
7.50
21.0
DCC300XXX3V
208/230-3-60
48.1
245.0
48.1
245.0
2
1.00
4.2
2-speed
Belt
Drive
7.50
21.0
DCC300XXX4W
460-3-60
18.6
125.0
18.6
125.0
2
1.00
2.1
2-speed
High
Static
Belt
Drive
7.50
10.1
DCC300XXX4V
460-3-60
18.6
125.0
18.6
125.0
2
10.1
DCC300XXX7W
575-3-60
14.7
100.0
14.7
2-speed
High
Static
Belt
Drive
7.50
1.00
2.1
2-speed
Belt
Drive
7.50
2
1.00
1.6
100.0
2
1.00
1.6
2-speed
Belt
Drive
7.50
8.2
8.2
DCC300XXX7V
575-3-60
14.7
100.0
14.7
100.0
* Electric Heater kW rating: Rated at 240v for 208-230v units; 480v for 460v units
ATTENTION INSTALLING PERSONNEL
Use only the heater kit specied for each model as dictated by the table above.
UNIT
HEATER KIT
MODEL NUMBER
MINIMUM CFM
Downshot
HEATER KIT
MODEL NUMBER
MINIMUM CFM
Downshot
HEATER KIT
MODEL NUMBER
MINIMUM CFM
Downshot
EHK3-31 5250 EHK4-31 5250 EHK7-31 5250
15 TON EHK3-46 5250 EHK4-46 5250 EHK7-46 5250
EHK3-60 5250 EHK4-60 5250 EHK7-60 5250
EHK3-31 7000 EHK4-31 7000 EHK7-31 7000
20 TON EHK3-46 7000 EHK4-46 7000 EHK7-46 7000
25 TON EHK3-60 7000 EHK4-60 7000 EHK7-60 7000
EHK3-75 7000 EHK4-75 7000 EHK7-75 7000
When using electric heat kit, use of the single point kit installed in the unit is required to meet UL requirements