Goodman DCC048 Installation Manual

INSTALLATION INSTRUCTIONS

DCC/DCH SERIES

LIGHT COMMERCIAL PACKAGED HEATING AND COOLING UNIT

7.5 to 12.5 TON

Index

Replacement Parts................................................................ 2

Safety Instructions................................................................ 2

General Information ............................................................. 2

Unit Location ........................................................................ 3

Clearances ............................................................................ 4

Roof Curb Post-Installation Checks ....................................... 5

Roof Top Duct Connections................................................... 5

Rigging Details ...................................................................... 5

ATTENTION INSTALLING PERSONNEL:

Prior to installation, thoroughly f amiliarize 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 Specification
Sheet applicable to your model for information regarding
accessories.

*NOTE: Please contact your distributor or our website for the
applicable Specification Sheet referred to in this manual.

Electrical Wiring.................................................................... 7

Circulating Air and Filters...................................................... 9

Condensate Drain Connection .............................................. 9

Startup, Adjustments, and Checks ..................................... 10

Air flow Adjustments .......................................................... 11

Motor Sheave Adjustments ................................................ 12

Heat Pump Operation.........................................................14

Maintenance ...................................................................... 15

Troubleshooting.................................................................. 15

Appendix A Blower Performance Data................................ 17

Belt Drive - Standard Down Shot ................................... 17

Belt Drive - Standard Horizontal .................................... 18

Belt Drive - High Static Down Shot................................. 19

Belt Drive - High Static Horizontal.................................. 20

Appendix B Electrical Data..................................................21

Appendix C Unit Dimensions............................................... 22

IOD-1002D
12/2014

Our continuing commitment to quality products may mean a change in specifications without notice.

© 2014

5151 San Felipe St., Suite 500, Houston, TX 77056

www.daikincomfort.com

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:

CONSUMER AFF AIRS

DAIKIN NORTH AMERICA LLC

7401 SECURITY W AY

HOUSTON, TEXAS 77040

855-770-5678

WA RNING

T

HIS UNIT MUST NOT BE USED AS A “CONSTRUCTION HEATER
DURING THE FINISHING PHASES OF CONSTRUCTION ON A NEW
STRUCTURE
OF THE UNIT DUE TO EXTREMELY LOW RETURN AIR TEMPERATURES
AND EXPOSURE TO CORROSIVE OR VERY DIRTY ATMOSPHERES

. T

HIS TYPE OF USE MAY RESULT IN PREMATURE FAILURE

”

.

WARNING

HIGH VOLTAGE!
D

ISCONNECT ALL POWER BEFORE SERVICING OR
INSTALLING THIS UNIT
BE PRESENT
DAMAGE, PERSONAL INJURY OR DEATH

. F

. M

AILURE TO DO SO MAY CAUSE PROPERTY

ULTIPLE POWER SOURCES MAY

.

WARNING

SAFETY INSTRUCTIONS

TO THE INSTALLER

Before installing this unit, plea se read this manual to f amiliarize
yourself on the specific items which must be adhered to,
including maximum external static pressure to unit, air
temperature rise, minimum or maximum CFM and motor
speed connections.

Keep this literature in a safe place for future reference.

CAUTION

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

.

W ARNING

T

HIS PRODUCT CONTAINS OR PRODUCES A CHEMICAL OR CHEMICALS

WHICH MAY CAUSE SERIOUS ILLNESS OR DEATH AND WHICH ARE
KNOWN TO THE STATE OF CALIFORNIA TO CAUSE CANCER, BIRTH
DEFECTS OR OTHER REPRODUCTIVE HARM

.

TO 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

HIGH VOLTAGE!

INSTALLATION AND REPAIR OF THIS UNIT SHOULD BE
PERFORMED
MINIMUM) THE REQUIREMENTS OF AN

T

ECHNICIAN” AS SPECIFIED BY THE AIR CONDITIONING

HEATING AND REFRIGERATION INSTITUTE

TTEMPTING TO INSTALL OR REPAIR THIS UNIT WITHOUT

A

SUCH BACKGROUND MAY RESULT IN PRODUCT DAMAGE
PERSONAL INJURY OR DEATH

ONLY BY

INDIVIDUALS MEETING(AT A

“E

.

GENERAL INFORMA TION

NTRY LEVEL

(AHRI).

,

,

WARNING

O PREVENT PROPERTY DAMAGE, PERSONAL INJURY OR DEATH, DUE TO FIRE,

T

EXPLOSIONS, SMOKE, SOOT, CONDENSATION, ELE CTRIC SHOCK OR CARBON
MONOXIDE, THIS UNIT MUST BE PROPERLY INSTALLED, REPAIRED, OPERATED,
AND MAINTAINED.

This unit is approved for outdoor inst allation ONLY. Rated perf or­mance is achieved after 72 hour s of operation. Rated perf ormance
is delivered at the specified airflow. See outdoor unit specifica­tion sheet for split system models or product specification sheet
for packaged and light commercial models. Specification sheets
can be found at www.daikincomfort.com for Daikin brand prod­ucts. Within either 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 conditioner s or heat pumps,
to access a list of product pages that each contain links to that
model’s specification shee t.

WARNING

TO

AVOID PROPERTY DAMAGE, PERSONAL INJURY OR DEATH, DO

NOT USE THIS UNIT IF ANY PART HAS BEEN UNDER WATER

I

MMEDIATELY CALL A QUALIFIED SERVICE TECHNICIAN TO INSPECT
THE FURNACE AND TO REPLACE ANY PART OF THE CONTROL SYSTEM
AND ANY GAS CONTROL HAVING BEEN UNDER WATER

.

.

To assure that your unit operates safely and efficiently, it must be
installed, operated, and maintained in accordance with these in­stallation and operating instructions, all local building codes and
ordinances.

2

EPA REGULATIONS

IMPORTANT: THE UNITED STATES ENVIRONMENTAL PROTECTION AGENCY (EPA)

HAS ISSUED VARIOUS RE GULATIONS REGARDING THE INTRODUCTION AND DISPOSAL

REFRIGERANTS IN THIS UNIT. FAILURE TO FOLLOW THESE REGULATIONS MAY

OF

THE ENVIRONMENT AND CAN LEAD TO THE IMPOSITION OF SUBSTANTIAL

HARM

. BECAUSE REGULATIONS MAY VARY DUE TO PASSAGE OF NEW LAWS, WE

FINES

A CERTIFIED TECHNICIAN PERFORM ANY WORK DONE ON THIS UNIT.

SUGGEST

SHOULD YOU HAVE ANY QUESTIONS PLEASE CONTACT THE LOCAL OFFICE OF THE
EPA.

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 inve stigation of
each claim. The distributor or manufacturer will not
accept claims from dealers for tr ansportation damage.

NOTE: When inspecting the unit for transportation damag e, remove
all packaging materials. Recycle or dispose of the packaging
material according to local codes.

NATIONAL CODES

This product is designed and manufactur ed to permit installation
in accordance with National Codes. It is the inst aller’ s r e sponsibil­ity 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 calcula te d b y an appr ov e d
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

1430 Broadway

New York, NY 10018
System design and installation should also, where applicable, fol­low information pre sented in accept ed industry guides such as the
ASHRAE Handbooks. The manufacturer assumes no r esponsibility
for equipment installed in viola tion of an y c ode or r egula tion. The
mechanical installation of the packaged roof top units consists of
making final 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 factory­installed and tested prior to shipment.

PRE-INSTALLATION CHECKS

Carefully rea d all instructions f or the installation prior t o inst alling
unit. Ensure each step or proce dur e is under stood and an y special
considerations are taken into account before starting installation.
Assemble all tools, hardware and supplie s needed to complet e the
installation. Some items may need to be purchased locally.

UNIT LOCATION

WARNING

TO

PREVENT POSSIBLE EQUIPMENT DAMAGE, PROPERTY DAMAGE
PERSONAL INJURY OR DEATH, THE FOLLOWING BULLET POINTS MUST
BE OBSERVED WHEN INSTALLING THE UNIT

.

,

IMPORTANT NOTE: Remove wood shipping rails and metal ship­ping brace (if applicable) prior to installation of the unit on a roof
curb.

ALL INSTALLATIONS:
I

MPORTANT NOTE: Unit should be energized 24 hours prior to

compressor start up to ensure crankcase heater has suffi­ciently warmed the compressors. Compressor damage may
occur if this step is not followed.

Units are g ener ally ins t alled 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 identification plate iden tifies the various com­ponents of the unit such as refrigeration tonnage, heating input
and voltage.

Carefully inspect the unit for damage. Any bolts or screws which
may have loosened in tr ansit must be re-tightened. In the e vent 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, c arrier should be notified as
soon as possible-preferably within 5 days.

4. File the claim with the following supporting documents:

a. Original Bill of Lading, certified copy , or indemnity bond.
b. Original paid freight bill or indemnity in lieu thereof.
c. Original invoice or certified copy thereof, showing trade

and other discounts or reductions.

NOTE: Appliance is shipped from factory for vertical duct
application.

Proper installation of the unit ensur es tr ouble-free operation. Im­proper installation can result in problems ranging from noisy
operation to property or equipment damages, dangerous condi­tions that could result in injury or personal property damage and
could void the warranty. Give this booklet to the user and explain
it’s provisions. The user should r etain these instructions f or futur e
reference.

• For proper operation and condensate drainage, the unit

must be mounted level.

• T o avoid possible illness or death of the building occupants,

do NOT locate outside air intake device (economizer,
manual fresh air intake, motorized fresh air intake) too
close to an exhaust outlet, gas vent termination, or
plumbing vent outlet. For specific distances required,
consult local codes.

• Allow minimum clearances from the enclosure for fire

protection, proper operation, and service acce ss (see Unit
Clearances). These clearances must be permanently
maintained.

3

• When the unit is heating, the temperature of the return

air entering the unit must be between 50°F and 100°F.

WARN ING

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 w at er

from higher ground can collect in the unit.

ROOF TOP INSTALLATIONS ONLY:

• T o a v oid possible property damage or per sonal injury, the

roof must have sufficient structural strength to carry the
weight of the unit(s) and snow or water loads as required
by local codes. Consult a structur al engineer to determine
the weight capabilities of the roof.

• The unit may be installed directly on wood floors or on

Class A, Class B, or Class C roof covering material.

• To avoid possible personal injury, a safe, flat surface for

service personnel should be provided.

• As indicated on the unit’ s data plate, a minimum clear ance

of 36” to any combustible mat erial is required on the access
side of the unit. All combustible materials must be kept
out of this area.

• Adequate clearances fr om the unit to any adjacent public

walkways, adjacent buildings, building openings or
openable windows must be maintaine d 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 field supplied structure.

• Do not roll unit across finished 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 store d on a flat, level surf ace.
Protect the condenser coil because it is easily damaged.

TO

PREVENT POSSIBLE EQUIPMENT DAMAGE, PROPERTY DAMAGE
PERSONAL INJURY OR DEATH, THE FOLLOWING BULLET POINTS MUST
BE OBSERVED WHEN INSTALLING THE UNIT

.

,

• Sufficient structural support must be det ermined 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 a ssembled with the
curb. Cantilevered type curbs are not available from the
factory.

• Curb insulation, cant strips, flashing and general roofing

material are furnished by the contractor.
The curbs must be supported on parallel sides by roof members.
The roof members must not penetrate supply and r eturn duct open­ing areas as damage to the unit might occur.

NOTE: The unit and curb accessories are de signed to allow v ertical
duct installation
placement is not recommended.

ALL

CURBS LOOK SIMILAR

POSITIONING, CHECK JOB PLANS CAREFULLY AND VERIFY MARKINGS
ON CURB ASSEMBLY
SUPERSEDES INFORMATION SHOWN

See the manual shipped with the roof curb for assembly and in­stallation instructions.

before unit placement. Duct installa tion after unit

CAUTION

. TO

AVOID INCORRECT CURB

. I

NSTRUCTIONS MAY VARY IN CURB STYLES AND

.

CLEARANCES

36”*

ROOF CURB INSTALLATIONS ONLY:

Curb installations must c omply with local codes and should be done
in accordance with the est ablished guidelines of the National R oof­ing Contractors Association.

Proper unit installation requires that the roof curb be firmly and
permanently attached to the roof structure. Check for adequate
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.

36”*

36” MIN.

UNIT CLEARANCES

*In situations that have multiple units, a 48” minimum clearance is
required between the condenser coils.

4

Adequate clearance around the unit should be k ept f or safe ty , ser ­vice, maintenance, and proper unit operation. A t otal clearance of
75” on the main control panel side of the unit is recommende d t o
facilitate possible fan shaft, coil, electric heat and gas furnace re­moval. A clearance of 48” is recommended on all other sides of
the unit to facilitate possible compr essor remov al, to allow service
access and to insure proper v entilation and condenser airflow . The
unit must not be installed beneath any obstruction. The unit should
be installed remote from all building exhausts to inhibit ingestion
of exhaust air into the unit fresh air intake.

CAUTION

IF

PROTRUSIONS EXIST, DO NO ATTEMPT TO SET UNIT ON CURB

.

ROOF TOP DUCT CONNECTIONS

Install all duct connections on the unit before placing the unit on
rooftop.

HORIZONTAL DISCHARGE

Refer t o IOD-7006 included in the litera ture pack for inst alling hori­zontal duct covers.

Flexible duct connectors between the unit and ducts are recom­mended. Insulate and weatherproof all external ductwork and
joints as required and in accordance with local codes.

INSULATED
PANELS

Roof Curb Installation

ROOF CURB POST -INSTALLA TION CHECK S

After installation, check the top of the curb, duct connection fr ame
and duct flanges to make sure gasket has been applied properly.
Gasket should be firmly applied to the top of the curb perimeter,
duct flanges and any exposed duct connection frame. If gasket is
loose, re-apply using strong weather resistant adhesive.

5 7/8”

36 3/8”

REMOVE

COVERS

28 3/8”

13 7/8”

SUPPLY

6 1/4”

HORIZONTAL DISCHARGE DUCT CONNECTIONS

7 3/8”

12 5/8”

RETURN

RIGGING DET AILS

WARNING

O PREVENT PROPERTY DAMAGE, THE UNIT SHOULD REMAIN IN AN UPRIGHT

T

POSITION DURING ALL RIGGING AND MOVING OPERATIONS.
LIFTING AND MOVING WHEN A CRANE IS USED, PLACE THE UNIT IN AN
ADEQUATE CABLE SLING.

T

O FACILITATE

PROTRUSION

Inspect curb to ensure that none of the utility services (electric)
routed through the curb protrude above the curb.

CAUTION

DO

NOT LIFT UNITS TWO AT A TIME
INCLUDED IN THE UNIT BASE FRAME
PREVENT DAMAGE TO THE UNIT

. P

ROVISIONS FOR FORKS HAVE BEEN

. M

INIMUM FORK LENGTH IS

.

48” TO

Provisions for fork s have been include d in the unit base frame. No
other fork locations are approved.

5

WARNING

O PREVENT POSSIBLE EQUIPMENT DAMAGE, PROPERTY DAMAGE, PERSONAL

T

INJURY OR DEATH, THE FOLLOWING BULLET POINTS MUST BE OBSERVED
WHEN INSTALLING THE UNIT.

• Unit must be lifted by the four lifting holes located at the
base frame corners .

• Lifting c ables should be at tached to the unit with shackle s.

• 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 sufficient length so that cables do not come in
contact with the unit during transport. Remove wood
struts mounted beneath unit base fr ame befor e setting unit
on roof curb. These struts are intended to protect unit
base frame from f ork lift damage. Removal is acc omplished
by extracting the sheet metal retainers and pulling the
struts through the base of the unit. Refer to rigging label
on the unit.

• Your unit may be equipped with a steel shipping brace
located underneath the unit (under compressors). If
installing on a roof curb, the brace MUST be removed.
Follow the following instructions for removal.

CAUTION

W

HEN UNIT IS SUSPENDED, BOARDS AND SHIPP ING BRACE WILL DROP WHEN

SCREWS ARE REMOVED

EMOVE FORK HOLE BRACKETS, BOARDS AND SHIPP ING BRACE FROM BOTTOM

R

OF UNIT BEFORE PLACING UNIT ONTO CURB

Before installing this unit on a roof curb:

1. Remove wooden strut s per installation instructions. These
are the struts that are located in the fork holes and are
used to protect the unit from damage while lifting with
forks.

2. Locate and remove the twelve (12) scr ews tha t at tach the
shipping brace to the side r ails. There will be six (6) screws
on each side of the unit and they are in a diagonal pat tern.

See following figure.

. TO

PREVENT PERSONAL INJURY

, STAND CLEAR.

.

3. Lift unit per the “Rigging Details” section of the installation
instructions, observing all warnings and cautions. Lift the
unit high enough off the ground to reach under and gr asp
the shipping brace.

4. Rotate the brace by tapping the ends until the brace falls
free from the unit.

5. Dispose of the brace appropriately.

Important: If using bottom discharge with roof curb, ductwork
should be attached to the curb prior to ins talling the unit. Ductwork
dimensions are shown in Roof Curb Installation Instructions.

Refer to the R oof Curb Installation Instructions for proper curb in­stallation. Curbing must be installed in compliance with the Na­tional Roofing Contractors Association Manual.

Lower unit carefully onto roof mounting curb. While rigging unit,
center of gravity will cause condenser end t o be lower than supply
air end.

6

To assist in determining rigging requirements, unit weights are

A

C

shown as follows:

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.

Y

EVAP ORATOR COIL

COMPRESSOR 1

CG

COMPRESSOR 2

RETURN

SUPPLY

RIGGING REMOVAL

CAUTION

TO

PREVENT DAMAGE TO THE UNIT, DO NOT ALLOW CRANE HOOKS

AND SPREADER BARS TO REST ON THE ROOF OF THE UNIT

Remove sprea der bars, lifting cable s and other rigging equipment.

BD

X

CORNER & CENTER OF GRAVITY LOCATIONS

ELECTRICAL WIRING

WARN ING

.

DCC Weights (lb s)

DATA

090 102 120 150

Corner Weight - A 313 310 310 420
Corner Weight - B 248 263 263 335
Corner Weight - C 250 258 258 290
Corner Weight - D 199 219 219 230
Unit Shipping Weight 1085 1125 1125 1300
Unit Operating Weight 1010 1050 1050 1275
X (I nche s) 4 4 45 45 41
Y (Inches) 27 28 28 27.5

DCH Weights (lbs)

DATA

090 102/120 150

Corn er W eight - A 28 5 345 4 35
Corn er W eight - B 285 325 3 45
Corn er W eight - C 285 320 3 00
Corn er W eight - D 285 300 2 40
Unit Ship ping W e ig ht 1175 1 3 10 1 3 50
Unit Operating Weight 1135 1285 1325
X (I nc hes) 4 8 48 41
Y (Inches) 30 30 27.5

NOTE: These weights are without accessories installed.

HIGH VOLTAGE!

ISCONNECT ALL POWER BEFORE SERVICI NG OR

D

INSTALLING THIS UNIT
BE PRESENT
DAMAGE, PERSONAL INJURY OR DEATH

. F

. M

AILURE TO DO SO MAY CAUSE PROPERTY

ULTIPLE POWER SOURCES MAY

.

WARN ING

HIGH VOLTAGE!
T

O AVOID PERSONAL INJURY OR DEATH DUE TO
ELECTRICAL SHOCK, DO NOT TAMPER WITH FACTORY
WIRING

. THE

OF THESE UNITS ARE FACTORY-INSTALLED AND HAVE
BEEN THOROUGHLY TESTED PRIOR TO SHIPMENT

ONTACT YOUR LOCAL REPRESENTATIVE IF

C

ASSISTANCE IS REQUIRED

INTERNAL POWER AND CONTROL WIRING

.

.

CAUTION

TO

PREVENT DAMAGE TO THE WIRING, PROTECT WIRING FROM
SHARP EDGES
LOCAL CODES AND ORDINANCES
REMOVABLE ACCESS PANELS

. F

OLLOW NATIONAL ELECTRICAL CODE AND ALL

. DO

NOT ROUTE WIRES THROUGH

.

CAUTION

C

ONDUIT AND FITTINGS MUST BE WEATHER-TIGHT TO PREVENT

WATER ENTRY INTO THE BUILDING

.

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.

CAUTION

TO

PREVENT SEVERE DAMAGE TO THE BOTTOM OF THE UNIT, DO NOT

FORK LIFT UNIT AFTER WOOD STRUTS HAVE BEEN REMOVED

.

All line voltage connections must be made through weatherproof
fittings. All exterior power supply and ground wiring must be in
approved weatherproof conduit.

7

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 e dition of the National Electrical Code (ANSI/
NFP A 7 0), and all local codes and ordinances. All field wiring shall
conform with the temperature limitations for Type T wire (63°F/
35°C rise).

The main power supply shall be three-phase, three wir e. The unit
is factory wired for the voltage shown on the unit’s data plate.

POWER
WIRING

NOTE: If supply voltage is 208V , all le ads on primary of transf ormer
TRANS1 must be moved from the 230V to the 208V tap.

Main power wiring should be sized f or the minimum wire 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 e xcessiv e volt age drop. Wires should be sized f or a
maximum of 3% voltage drop.

CAUTION

O AVOID PROPERTY DAMAGE OR PERSONAL INJURY DUE TO FIRE, USE

T

ONLY COPPER CONDUCTORS.

CAUTION

L

ABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING
CONTROLS
DANGEROUS OPERATION
SERVICING

. W

IRING ERRORS CAN CAUSE IMPROPER AND

.

. V

ERIFY PROPER OPERATION AFTER

NOTE: A weather-tight disconnect switch, properly sized for the
unit total load, must be field or f actory inst alled. An e xt ernal field
supplied disconnect may be mounted on the exterior panel.

Ensure the data plate is not cov ered by the field-supplied disc onnect
switch.

• Some disconnect switches are not fused. Pr otect the power
leads at the point of distribution in accordance with the
unit’s data plate.

• The unit must be electrically grounded in accor dance with
local codes or, in the absence of local codes, with the lates t
edition of the National Electrical Code (ANSI-NFPA 70). A
ground lug is provided for this purpose. Size grounding
conductor in accordance with T able 250-95 of the National
Electrical Code. Do not use the ground lug for c onnecting
a neutral conductor.

• Connect power wiring to the Single Point Power block. This
terminal block is located within the main control box.

COM
NO
NC

THERMOSTAT
WIRING

POWER AND LOW VOLTAGE BLOCK LOCATIONS

WARN ING

F

AILURE OF UNIT DUE TO OPERATION ON IMPROPER LINE VOLTAGE
OR WITH EXCESSIVE PHASE UNBALANCE CONSTITUTES PRODUCT
ABUSE AND WILL VOID YOUR WARRANTY AND MAY CAUSE SEVERE
DAMAGE TO THE UNIT ELECTRICAL COMPONENTS

.

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 connect ors at the
desired entr ance locations. External connector s must be weather ­proof. All holes in the unit base must be sealed (including those
around conduit nuts) to prevent water leakage into building. All
required conduit and fittings are to be field supplied.

Supply voltage to roof top unit mus t 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 comp any for
correction of improper voltage or phase unbalance.

8