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INSTALLATION INSTRUCTIONS
DP13C/DP13H 13 SEER “M” SERIES WITH R-410A
SELF -CONT AINED PACKAGE AIR CONDITIONERS AND HEA T PUMP UNITS
Index
TO THE INSTALLER............................................................................ 2
SHIPPING INSPECTION ................................................................... 2
REPLACEMENT PARTS .................................................................... 2
ORDERING PARTS ............................................................................ 2
SAFETY INSTRUCTIONS .................................................................. 2
CODES AND REGULATIONS ............................................................ 3
EPA REGULATIONS ........................................................................... 3
ATIONAL CODES ............................................................................. 3
N
MAJOR COMPONENTS ................................................................... 3
PRE-INSTALLATION CHECKS ............................................................ 3
CLEARANCES AND ACCESSIBILITY ............................................................. 3
UNIT LOCA TION................................................................................ 4
GROUND LEVEL PRE-INSTALLATION DETAILS................................................ 4
ROOF TOP PRE-INSTALLATION DETAILS ..................................................... 4
ROOF CURB INSTALLATIONS ONLY ........................................................... 4
IGGING DETAILS ............................................................................. 4
R
CIRCULATING AIR AND FILTERS ...................................................... 5
AIRFLOW CONVERSION ....................................................................... 5
DUCT WORK ................................................................................... 5
FILTERS ........................................................................................ 5
PIPING ........................................................................................... 6
CONDENSATE DRAIN ......................................................................... 6
WIRING.......................................................................................... 6
HIGH VOLTAGE WIRING ..................................................................... 7
OW VOLTAGE WIRING ...................................................................... 7
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
self contained package air conditioners and heating units. See
the Specification Sheets applicable to your model for information
regarding accessories.
*NOTE: Please contact your distributor or our website for the applicable Specification Sheets referred to in this manual.
L
INTERNAL WIRING ............................................................................ 7
STARTUP, ADJUSTMENTS, AND CHECKS ......................................... 7
START-UP PROCEDURE AND CHECKLIST..................................................... 7
HEAT PUMP START-UP PROCEDURE ....................................................... 7
FINAL SYSTEM CHECKS ....................................................................... 8
COMPONENTS................................................................................ 8
CRANKCASE HEATER ......................................................................... 8
ONDENSER MOTOR ......................................................................... 8
C
COMPRESSOR ................................................................................. 8
CONTACT OR RELAY............................................................................ 8
DEFROST CONTROL ........................................................................... 8
OUTDOOR THERMOSTAT ..................................................................... 8
REVERSING VALVE COIL ...................................................................... 8
NDOOR BLOWER MOTOR ................................................................... 8
I
BLOWER INTERLOCK RELAY ................................................................... 9
IOD-3004
6/2013
Our continuing commitment to quality products may mean a change in specifications without notice.
© 2013
5151 San Felipe St., Suite 500, Houston, TX 77056
www.daikincomfort.com
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HEA T PUMP OPERATION................................................................. 9
C
OOLING CYCLE ............................................................................... 9
HEA TING CYCLE ............................................................................... 9
DEFROST CONTROL ........................................................................... 9
SUGGESTED FIELD TESTING/TROUBLE SHOOTING .......................................... 9
IRFLOW MEASUREMENT AND ADJUSTMENT ............................................ 10
A
S
PEED TAP ADJUSTMENTS FOR INDOOR BLOWER MOTOR ............................ 12
REFRIGERANT CHARGE CHECKS ........................................................... 12
ELECTRICAL ADJUSTMENTS .......................................................... 11
MAINTENANCE............................................................................. 13
ERVICE ..................................................................................... 13
S
NADEQUAT E AIR VOLUME THROUGH INDOOR COIL ................................. 13
I
OUTSIDE AIR INTO RETURN DUCT .................................................... 13
UNDERCHARGE .......................................................................... 13
OOR “TERMINATING” SENSOR CONTACT ............................................ 13
P
MALFUNCTIONING REVERSING VALVE - THIS MAY BE DUE TO: ..................... 13
TROUBLESHOOTING CHART ......................................................... 14
APPENDIX .................................................................................... 15
UNIT DIMENSIONS....................................................................... 15
MINIMUM CLEARANCES ............................................................... 16
RECOMMENDED FILTER SIZES ...................................................... 16
W ARNING
I
NSTALLATION AND REPAI R OF THIS UNIT SHOULD BE
PERFORMED
THE REQUIREMENTS OF AN
SPECIFIED
R
EFRIGERATION INSTITUTE
INSTALL
RESULT
ONLY BY
BY
THE AIR-CONDITIONING
OR
REPAIR THIS UNIT WITHOUT SUCH BACKGROUND MAY
IN
PRODUCT DAMAGE, PERSONAL INJURY OR DEATH
INDIVIDUALS MEETING
“E
NTRY LEVEL TECHNICIAN” AS
, H
(AHRI). A
EATING, AND
TTEMPTING TO
AT A MINIMUM
(
)
.
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 AFFAIR S
DAIKIN NORTH AMERICA LLC
7401 SECURITY W A Y
HOUSTON, TEXAS 77040
855-770-5678
SAFETY INSTRUCTIONS
The following symbols and labels are used throughout this manual
to indicate immediate or potential safety hazards. It is the owner’s
and installer’s responsibility to read and comply with all safety
information and instructions accompanying these symbols. Failure to heed safety information increases the risk of personal injury, property damage, and/or product damage.
W ARNING
TO THE INSTALLER
Carefully read all instructions for the installation prior to installing unit. Make sure each step or procedure is understood and any
special considerations are taken into account before starting installation. Assemble all tools, hardware and supplies needed to
complete the installation. Some items may need to be purchased
locally. After deciding where to install unit, closely look the location over - both the inside and outside of home. Note any potential obstacles or problems that might be encountered as noted in
this manual. Choose a more suitable location if necessary.
IMPORTANT NOTE: If a crankcase heater is used, the unit should
be energized 24 hours prior to compressor start up to ensure
crankcase heater has sufficiently warmed the compressor. Compressor damage may occur if this step is not followed.
Before using this manual, check the serial plate for proper model
identification.
The installation and servicing of this equipment must be performed by
qualified, experienced technicians only.
SHIPPING INSPECTION
Upon receiving the unit, inspect it for damage from shipment.
Claims for damage, either shipping or concealed, should be filed
immediately with the shipping company. Check the unit model
number, specifications, electrical characteristics and accessories
to determine if they are correct. In the event an incorrect unit is
shipped, it must be returned to the supplier and must NOT be
installed. The manufacturer assumes no responsibility for installation of incorrectly shipped units.
WARNING
HIGH VOLTAGE!
DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING
THIS UNIT.
TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR
DEATH.
MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE
WARNING
CONNECTING UNIT DUCT WORK TO UNAUTHORIZED HEAT PRODUCING DEVICES
SUCH AS A FIREPLACE INSERT, STOVE, ETC. MAY RESULT IN PROPERTY
DAMAGE, FIRE, CARBON MONOXIDE POISONING, EXPLOSION, PERSONAL
INJURY OR DEATH.
WARNING
HIS PRODUCT CONTAINS OR PRODUCES A CHEMICAL OR CHEMICALS WHICH
T
MAY CAUSE SERIOUS ILLNESS OR DEATH AND WHICH ARE KNOWN TO THE
S
TATE OF CALIFORNIA TO CAUSE CANCER, BIRTH DEFECTS OR OTHER
REPRODUCTIVE HARM.
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WARNING
O AVOID PROPERTY DAMAGE, PERSONAL INJURY OR DEATH, DO NOT USE
T
I
THIS UNIT IF ANY PART HAS BEEN UNDER WATER.
QUALIFIED SERVICE TECHNICIAN TO INSPECT THE FURNACE AND TO REPLACE
ANY PART OF THE CONTROL SYSTEM AND ANY GAS CONTROL HAVING BEEN
UNDER WATER.
MMEDIATELY CALL A
WARNING
TO PREVENT THE RISK OF PROPERTY DAMAGE, PERSONAL INJURY, OR DEATH,
DO NOT STORE COMBUSTIBLE MATERIALS OR USE GASOLINE OR OTHER
FLAMMABLE LIQUI DS OR VA PORS I N THE V ICINITY OF THIS APPLI ANCE.
CODES AND REGULATIONS
EPA REGULATIONS
IMPORT A NT: THE UNITED STATES ENVIRONMENTAL PROTECTION AGENCY (EP A) HAS
ISSUED
VARIOUS REGULATIONS REGARDING THE INTRODUCTION AND DISPOSAL OF
REFRIGERANTS
ENVIRONMENT
REGULATIONS
TECHNICIAN
QUESTIONS
IN THIS UNIT. FAILURE TO FOLLOW THESE REGULATIONS MAY HARM THE
AND CAN LEAD TO THE IMPOSITION OF SUBSTANTIAL FINES. BECAUSE
MAY VARY DUE TO PASSA GE OF NEW LAWS, WE SUGGEST A CERTIFIED
PERFORM ANY WORK DONE ON THIS UNIT. SHOULD YOU HAVE ANY
PLEASE CONTACT THE LOCAL OFFICE OF THE EP A.
NATIONAL CODES
This product is designed and manufactured to permit installation
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.
MAJOR COMPONENTS
The unit includes a hermetically sealed refrigerating system (consisting of a compressor, condenser coil, evaporator coil with flowrator), an indoor blower, a condenser fan and all necessary internal electrical wiring. The heat pump also includes a reversing
valve, solenoid, defrost thermostat and control and loss of charge
protection. The system is factory-evacuated, charged and performance tested. Refrigerant amount and type are indicated on rating plate.
The DP13CM/DP13HM M-series air conditioners and heat pumps
are designed for OUTDOOR USE ONLY. DP13HM M-Series is available in cooling capacities of 2, 2-1/2, 3, 3-1/2, 4 and 5 nominal tons
of cooling. DP13CM M-Series is available in cooling capacities of
3, 4 and 5 nominal tons of cooling. Optional field installed heat
kits are available in 5,8,10,15 and 20 kW. 3 phase heat kits are
available only in 15 and 20 kW. The units can be easily installed in
manufactured or modular homes with existing high-static duct
work. The units can also be easily converted to accommodate a
plenum for normal or low-static applications. The DP13CM/DP13HM
M-series are self contained packaged units so the only connections needed for installation are the supply and return ducts, the
line and low voltage wiring and drain connection. Rated performance is achieved after 72 hours of operation. Rated performance 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 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 specification sheet.
The information on the rating plate is in compliance with the FTC
& DOE rating for single phase units. The three phase units in this
series are not covered under the DOE certified program. The efficiency ratings of these units are a product of thermal efficiency
determined under continuous operating conditions independent
of any installed system.
PRE-INSTALLATION CHECKS
Before attempting any installation, the following points should
be considered:
• Structural strength of supporting members
• Clearances and provision for servicing
• Power supply and wiring
• Air duct connections
• Drain facilities and connections
• Location may be on any four sides of a home, manufactured
or modular, to minimize noise
CLEARANCES AND ACCESSIBILITY
The unit is designed to be located outside the building with unobstructed condenser air inlet and discharge. Additionally, the
unit must be situated to permit access for service and installation. Condenser air enters from three sides. Air discharges upward from the top of the unit. Refrigerant gauge connections are
made on the right side of the unit as you face the compressor
compartment. Electrical connections can be made either on the
right, bottom or duct panel side of the unit. The best and most
common application is for the unit to be located 10” from wall (4”
minimum) with the connection side facing the wall. This “close to
the wall” application minimizes exposed wiring.
Close to the wall application assures free, unobstructed air to the
other two sides. In more confined application spaces, such as
corners provide a minimum 12” clearance on all air inlet sides.
Allow 36” minimum for service access to the compressor compartment and controls. The top of the unit should be completely unobstructed. If units are to be located under an overhang, there should
be a minimum of 48” clearance and provisions made to deflect the
warm discharge air out from the overhang.
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UNIT LOCATION
Consider the affect of outdoor fan noise on conditioned space
and any adjacent occupied space. It is recommended that the unit
be placed so that condenser air discharge does not blow toward
windows less than 25 feet away. Consideration should also be
given to shade and unit appearance.
Heat pumps require special location consideration in areas of
heavy snow accumulation and/or areas with prolonged continuous subfreezing temperatures. Heat pump unit bases have holes
under the outdoor coil to permit drainage of defrost water accumulation. The unit must be situated to permit free unobstructed
drainage of the defrost water and ice. A minimum 2" clearance
under the outdoor coil is required in the milder climates.
GROUND LEVEL PRE-INSTALLATION DETAILS
The unit should be set on a solid, level foundation - preferably a
concrete slab at least 4 inches thick. The slab should be above
ground level and surrounded by a graveled area for good drainage. Any slab used as a unit’s foundation should not adjoin the
building as it is possible that sound and vibration may be transmitted to the structure.
Rooftop Installation
ROOF CURB INSTALLATIONS ONLY
NOTE: Sufficient structural support must be determined prior to
locating and mounting the curb and package unit.
Curb insulation, cant strips, flashing and general roofing material
are furnished by the contractor.
Curbing must be installed in compliance with the National Roofing Contractors Association Manual. Construct duct work using current industry guidelines. The duct work must be placed into the
roof curb before mounting the package unit.
Ground Level Installation
ROOF TOP PRE-INSTALLATION DETAILS
Ensure that the roof is weather tight and allows proper drainage
of condensation. Use steel or treated wood beams as unit support for load distribution.
NOTE: To ensure proper condensate drainage, unit must be installed in a level position.
• To avoid possible property damage or personal injur y, 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 structural 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.
Roof Curb Installation
RIGGING DETAILS
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
WARNING
O AVOID POSSIBLE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH,
T
ENSURE THE ROOF HAS SUFFICIENT STRUCTURAL STRENGTH TO CARRY THE
WEIGHT OF THE UNIT(S), ROOF CURB, SNOW LOADS, AND WATER LOADS AS
REQUIRED BY LOCAL CODES.
DETERMINE THE WEIGHT CAPABILITIES OF THE ROOF.
CONSULT A STRUCTURAL ENGINEER TO
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CAUTION
O AVOID POSSIBLE PERSONAL INJURY, A SAFE, FLAT SURFACE FOR SERVICE
T
PERSONNEL SHOULD BE PROVIDED.
IMPORTANT: If using bottom discharge with roof curb, duct work
should be attached to the curb prior to installing the unit.
Lower unit carefully onto roof mounting curb. While rigging unit,
center of gravity will cause condenser end to be lower than supply
air end.
Return
Supply
Remove these panels
for downflow duct
applications
Duct Cover Installation
Down Discharge Applications
Cut insulation around bottom openings and remove panels from
the bottom of the unit, saving the screws holding the panels in
place.
NOTE: Single phase models require installation of horizontal duct kit
#20464501NGK (medium chassis) and #20464502NGK (large chassis).
Rigging
CIRCULATING AIR AND FILTERS
AIRFLOW CONVERSION
Units can easily be converted from horizontal to down-discharge
airflow delivery. In down-discharge or high static installations,
the installer should measure the total external static and review
the blower performance charts before performing the installation. In some installations it will be necessary to change the
blower speed to provide proper air flow.
Horizontal Air Flow (Applies to 3 phase models)
Single phase models are shipped without horizontal duct covers. If
needed, these kits may be ordered through Daikin’s Service Parts
department.
DUCT WORK
Duct systems and register sizes must be properly designed for the
C.F.M. and external static pressure rating of the unit. Duct work
should be designed in accordance with the recommended methods of Air Conditioning Contractors of America Manual D (Residential) or Manual Q (Commercial). All ductwork exposed to the
outdoors must include a weatherproof barrier and adequate insulation.
A duct system should be installed in accordance with Standards of
the National Board of Fire Underwriters for the Installation of Air
Conditioning, Warm Air Heating and Ventilating Systems. Pamphlets No. 90A and 90B.
The supply duct from the unit through a wall may be installed
without clearance. However, minimum unit clearances as shown
in the appendix must be maintained. 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.
For duct flange dimensions on the unit refer to the Unit Dimension illustration in the appendix.
For down-discharge applications, the ductwork should be attached
to the roof curb prior to installing the unit. Duct work dimensions
are shown in the roof curb installation manual.
If desired, supply and return duct connections to the unit may be
made with flexible connections to reduce possible unit operating
sound transmission.
Remove these covers
for horizontal duct
applications
FILTERS
CAUTION
T
O PREVENT PRO PERTY DAMAG E DUE TO FIRE AND LOSS O F
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.
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Filters are not provided with unit and must be supplied and externally installed in the return duct system by the installer. An optional factory approved internal filter rack may also be used. A
field-installed filter grille is recommended for easy and convenient access to the filters for periodic inspection and cleaning.
When installing filters, ensure the air flow arrows on the filter are
pointing toward the circulator blower.
Refer to the unit filter size chart below for filter size information.
MINIMUM FILTER SIZ E
NOMINAL SIZE
(INCHES)
10x20 1.4
14x20 1.9
14x25 2.4
15x20 2.1
16x20 2.2
16x25 2.8
20x20 2.8
20x25 3.5
25x25 4.3
NOTE: Filters must have adequate face area for the rated quantity
of the unit. See the air delivery table below for recommended
filter size. Size the filters in accordance with their manufacturer
recommendations. Throwaway filters must be sized for a maximum face velocity of 300 feet per minute.
NOMINAL AREA
(SQ. FT.)
Consult your local Power Company to determine the availability of
sufficient power to operate the unit. Check the voltage, frequency,
and phase at the power supply to ensure it corresponds to the
unit’s RATED VOLTAGE REQUIREMENT.
In accordance with the N.E.C. or local codes, install a branch circuit
fused disconnect near the unit. Determine wire sizes and overcurrent protection from the unit nameplate ampacity and in accordance with the Branch Circuit Ampacity table on the next page or
the N.E.C. The wiring should never be sized smaller than is recommended by either of these two sources.
Fuses smaller than that recommended on the rating plate could
result in unnecessary fuse failure or service calls. The use of
protective devices of larger size than indicated could result in
extensive damage to the equipment. The manufacturer bears no
responsibility for damage caused to equipment as result of the
use of larger than is recommended size protective devices.
All units have undergone a run test prior to packaging for shipment. This equipment has been started at minimum rated voltage
and checked for satisfactory operation. Do not attempt to operate
this unit if the voltage is not within the minimum and maximum
voltages shown on nameplate.
All exterior wiring must be within approved weatherproof conduit.
The unit must be permanently grounded in accordance with local
codes, or in absence of local codes, with N.E.C ANSI/ NFPA NO. 701984 or latest edition by using ground lug in the control box.
7
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500 1000 1500 2000 2500 3000 3500
Airflow - SCFM
PIPING
CONDENSATE DRAIN
The condensate drain connection of the evaporator is a half coupling of ¾” N.P.T. A trap must be provided to have Proper condensate drainage.
Unit
Drain
Connection
Flexible
Tubing-Hose
Or Pipe
A Positive Liquid Seal
Is Required
2" Minimum
3" Minimum
Fuses or HACR type circuit breakers may be used where codes
permit.
FOR INTERNAL WIRING SEE WIRING LABEL ATTACHED TO UNIT
RW
G
CONTACTOR
24 VOLT CONTR OL WIRING
L3 CONNECTION - 3 PHASE ONLY
*NOTE:
LOW VOLTAGE CONNECTORS do not apply to heat pumps with
See
*NOTE
W
R
G
electric heat. LOW VOLTAGE CONNECTORS apply ONLY to DP13C
units with electric heat.
IMPORTANT NOTE: Some single phase units are equipped with a
single-pole contactor. Exercise caution when servicing as only one
leg of the power supply is broken with the contactor.
To wire the unit, make the following high and low voltage connections.
Install condensate drain trap as shown. Use ¾ “ drain connection
size or larger. Do not operate without trap. Unit must be level or
slightly inclined toward drain.
WIRING
NOTE: All wiring should be made in accordance with the National
Electrical Code.
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BRANCH
CIRCUIT AMPACI TY
SUPPLY WIRE LENGTH
(FEET)
200 64443322
150 86644433
100 108866644
50 14 12 10 10 8 8 6 6
15 20 25 30 35 40 45 50
HIGH VOLTAGE WIRING
• Single Phase- Two leads should be connected to terminals
L1 & L2 in the electrical control section, using wire sizes
specified in wiring table.
• Three Phase- Three leads should be connected to terminals
L1, L2 and L3 in the electrical control section, using wire
sizes specified in wiring table.
LOW VOLTAGE WIRING
• Air Conditioners- Connect 24V wires from the thermostat
to the corresponding wires in the control box using No. 18
AWG as follows:
LEAD THERMOSTAT
Red R (24V)
Green G (Fan)
Yellow Y (Cool)
White W1 (Heat)*
Brown W2 ( Heat)*
• Heat Pumps- Connect 24V wires from the thermostat to
the corresponding wires in the control box using No. 18
AWG as follows:
TERMINAL THERMOSTAT
Red R (24V)
Green G (Fan)
Orange O (Rev. Valve)
White W1 (Heat, 2nd)*
Brown W2 (Heat, 3rd)*
Yellow Y (Cool)
C (Blue) C (C ommon)
*Optional field installed heat connections
INTERNAL WIRING
A diagram detailing the internal wiring of this unit is located on
the electrical box cover. If any of the original wire supplied with
the appliance must be replaced, the wire gauge and insulation
must be the same as the original wiring.
Transformer is wired for 230 volts on the 208/230 models. See wiring diagram for 208 volt wiring.
1. For branch circuit wiring (main power supply to unit
disconnect), the minimum wire size for the length of run
can be determined using the circuit ampacity found on
the unit rating plate and the table below. From the unit
disconnect to unit, the smallest wire size allowable may
be used for the ampacity, as the Disconnect must be in sight
of the unit.
2. Wire size based on 60° C rated wire insulation and 30° C
Ambient Temperature (86° F).
3. For more than 3 conductors in a raceway or cable, see the
N.E.C. for derating the ampacity of each conductor.
STARTUP, ADJUSTMENTS, AND CHECKS
WARNING
HIGH VOLTAGE!
DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING
THIS UNIT.
TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR
DEATH.
START-UP PROCEDURE AND CHECKLIST
With power turned off at all disconnects:
1. Turn thermostat system switch to “COOL” and fan switch to
2. Inspect all registers and set them to the normal open
3. Turn on the electrical supply at the disconnect.
4. Turn the fan switch to the “ON” position. The blower should
5. Turn the fan switch to “AUTO” position. The blower should
6. Slowly lower the cooling temperature until the unit starts.
7. Turn the temperature setting to the highest position,
8. Turn the thermostat system switch to “OFF” and disconnect
HEAT PUMP START-UP PROCEDURE
1. Check the cooling mode for the heat pump in the same
MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE
“AUTO”. Next, turn the temperature setting as high as it
will go.
position.
operate after a 7-second delay.
stop after a 65-second delay.
The compressor, blower and fan should now be operating.
Allow the unit to run 10 minutes, make sure cool air is
being supplied by the unit.
stopping the unit. The indoor blower will continue to run
for 65-seconds.
all power when servicing the unit.
manner as above. The reversing valve is energized when
the thermostat is placed in the cooling position. A clicking
sound should be noticeable from the reversing valve. By
lowering the temperature setting to call for cooling, the
contactor is energized. The compressor, blower and fan
should then be running. After the cooling mode is checked
out, turn the thermostat system switch to “OFF”.
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2. Turn the thermostat system switch to “HEAT” and fan switch
to “AUTO”.
3. Slowly raise the heating temperature setting. When the
heating first stage makes contact, stop raising the
temperature setting. The compressor, blower and fan
should now be running with the reversing valve in the deenergized (heating) position. After giving the unit time to
settle out, make sure the unit is supplying heated air.
4. If the outdoor ambient is above 80°F, the unit may trip on
its high pressure cut out when in heating. The compressor
should stop. The heating cycle must be thoroughly checked,
so postpone the test to another day when conditions are
more suitable. DO NOT FAIL TO TEST.
5. If the outdoor ambient is low and the unit operates
properly on the heating cycle, you may check the pressure
cutout operation by blocking off the indoor return air until
the unit trips.
6. If unit operates properly in the heating cycle, raise the
temperature setting until the heating second stage makes
contact. Supplemental resistance heat, if installed should
now come on. Make sure it operates properly.
NOTE: If outdoor thermostats are installed, the outdoor
ambient must be below the set point of these thermostats
for the heaters to operate. It may be necessary to jumper
these thermostats to check heater operation if outdoor
ambient is mild.
7. For thermostats with emergency heat switch, return to step
6. The emergency heat switch is located at the bottom of
the thermostat. Move the switch to emergency heat. The
heat pump will stop, the blower will continue to run, all
heaters will come on and the thermostat emergency heat
light will come on. 3-phase models are single stage heat
only.
8. If checking the unit in the wintertime, when the outdoor
coil is cold enough to actuate the defrost control, observe
at least one defrost cycle to make sure the unit defrosts
completely.
FINAL SYSTEM CHECKS
1. 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.
2. Check for air leaks in the ductwork.
3. See Sections on Air Flow Measurement and Adjustment and
Checking Charge.
4. 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.
5. Set the thermostat at the appropriate setting for cooling
and heating or automatic changeover for normal use.
6. Be sure the Owner is instructed on the unit operation,
filter, ser vicing, correct thermostat operation, etc.
The foregoing “Start-up Procedure and Check List” is recommended
to serve as an indication that the unit will operate normally.
COMPONENTS
CRANKCASE HEATER
This item is “ON” whenever power is supplied to the unit and
the crankcase heater thermostat is closed. Crankcase heater
thermostat closes at 67° and opens at 85°. It warms the
compressor crankcase thereby preventing liquid migration
and subsequent compressor damage. The insert type heater
is self regulating. It is connected electrically to the contactor
L1 and L2 terminals.
CONDENSER MOTOR
This item is activated by the contactor during heating and cooling,
except during defrost and emergency heat operation.
COMPRESSOR
This item is activated by the contactor for heating and cooling,
except during emergency heat. It is protected by an internal overload.
CONTACTOR RELAY
This control is activated by the thermostat (24V coil) and supplies
power to the compressor and condenser fan motor.
DEFROST CONTROL
The Defrost control provides time/temperature initiation and termination of the defrost cycle. When a Defrost cycle is initiated,
the defrost control shifts the reversing valve to “COOLING” mode,
stops the outdoor fan and brings on supplemental heat. Normally,
a Defrost cycle will take only 2-3 minutes unless system is low on
charge or outdoor conditions are severe. (windy and cold). The
defrost control also provides for a 3 minute off cycle compressor
delay.
OUTDOOR THERMOSTAT
These optional controls are used to prevent full electric heater
operation at varying outdoor ambient (0° F-to 45° F). They are normally open above their set points and closed below to permit
staging of indoor supplement heater operation. If the outdoor
ambient temperature is below 0° F (-18° C) with 50% or higher RH,
an outdoor thermostat (OT) must be installed and set at (0°) on
the dial. Failure to comply with this requirement may result in
damage to the product which may not be covered by the
manufacturer’s warranty.
REVERSING VALVE COIL
This coil is activated by the thermostat, in the cooling mode and
during defrost. It positions the reversing valve pilot valve for cooling operation.
INDOOR BLOWER MOTOR
This is activated by the room thermostat by COOLING or FAN ON
position. The motor is energized through the EBTDR for PSC motors
and directly by the room thermostat for EEM motors (4 or 5 Ton
units). EEM motors are constant torque motors with very low power
consumption. This motor is energized by a 24V signal from the
thermostat. (See Air Flow Measurement and Adjustment for speed
adjustment instructions).
8
Page 9
BLOWER INTERLOCK RELAY (SINGLE PHASE PSC MODELS ONLY)
This relay is used to energize the blower during the electric heat
operation. Some room thermostats do not energize the motor during electric heat. This relay insures blower operation when the
room thermostat energizes heat. This relay has a 240 volt coil and
an 8 amp contact relay. This relay is energized by the electric heat
kit sequencer.
HEAT PUMP OPERATION
COOLING CYCLE
When the heat pump is in the cooling cycle, it operates exactly as
a Summer Air Conditioner unit. In this mode, all the charts and
data for service that apply to summer air conditioning apply to the
heat pump. Most apply on the heating cycle except that “condenser”
becomes “evaporator”, “evaporator” becomes “condenser”, “cooling” becomes “heating”.
HEATING CYCLE
The heat pump operates in the heating cycle by redirecting refrigerant flow through the refrigerant circuit external to the compressor. This is accomplished with the reversing valve. Hot discharge
vapor from the compressor is directed to the indoor coil (evaporator on the cooling cycle) where the heat is removed, and the vapor
condenses to liquid. It then goes through the expansion device to
the outdoor coil (condenser on the cooling cycle) where the liquid
is evaporated, and the vapor goes to the compressor.
When the solenoid valve coil is operated either from heating to
cooling or vice versa, the piston in the reversing valve to the low
pressure (high pressure) reverse positions in the reversing valve.
The following figures show a schematic of a heat pump on the
cooling cycle and the heating cycle. In addition to a reversing
valve, a heat pump is equipped with an expansion device and
check valve for the indoor coil, and similar equipment for the
outdoor coil. It is also provided with a defrost control system.
The expansion devices are flowrator distributors and perform the
same function on the heating cycle as on the cooling cycle. The
flowrator distributors also act as check valves to allow for the
reverse of refrigerant flow.
When the heat pump is in the heating cycle, the outdoor coil is
functioning as an evaporator. The temperature of the refrigerant
in the outdoor coil must be below the temperature of the outdoor
air in order to extract heat from the air. Thus, the greater the
difference in the outdoor temperature and the outdoor coil temperature, the greater the heating capacity of the heat pump. This
phenomenon is a characteristic of a heat pump. It is a good
practice to provide supplementary heat for all heat pump installations in areas where the temperature drops below 45° F. It is
also a good practice to provide sufficient supplementary heat to
handle the entire heating requirement should there be a component failure of the heat pump, such as a compressor, or refrigerant
leak, etc.
Since the temperature of the refrigerant in the outdoor coil on the
heating cycle is generally below freezing point, frost forms on the
surfaces of the outdoor coil under certain weather conditions of
temperature and relative humidity. Therefore, it is necessary to
reverse the flow of the refrigerant to provide hot gas in the outdoor coil to melt the frost accumulation. This is accomplished by
reversing the heat pump to the cooling cycle. At the same time, the
outdoor fan stops to hasten the temperature rise of the outdoor
coil and lessen the time required for defrosting. The indoor blower
continues to run and the supplementary heaters are energized.
DEFROST CONTROL
During operation the power to the circuit board is controlled by a
temperature sensor, which is clamped to a feeder tube entering
the outdoor coil. Defrost timing periods of 30, 60 and 90 minutes
may be selected by setting the circuit board jumper to 30, 60 and 90
respectively. Accumulation of time for the timing period selected
starts when the sensor closes (approximately 31° F), and when the
wall thermostat calls for heat. At the end of the timing period, the
unit’s defrost cycle will be initiated provided the sensor remains
closed. When the sensor opens (approximately 75° F), the defrost
cycle is terminated and the timing period is reset. If the defrost
cycle is not terminated due to the sensor temperature, a twelve
minute override interrupts the unit’s defrost period.
SUGGESTED FIELD TESTING/TROUBLE SHOOTING
1. Run unit in the heating mode (room thermostat calling for
heat).
2. Check unit for proper charge. Note: Bands of frost on the
condenser coil indicate low refrigerant charge.
3. Shut off power to unit.
4. Disconnect outdoor fan by removing the outdoor fan motor
wire from “DF2” on defrost control.
5. Restart unit and allow frost to accumulate.
9
Page 10
6. After a few minutes of operation, the unit’s defrost
thermostat should close. To verify this, check for 24 volts
between “DFT” and “C” on board. If the temperature at
the thermostat is less than 28° F and the thermostat is
open, replace the unit’s defrost thermostat, as it is
defective.
7. When the unit ’s defrost thermostat has closed, short the
test pins on the defrost board until the reversing valve
shifts, indicating defrost. This should take up to 22
seconds depending on what timing period the control is
set on. After defrost initiation, the short must instantly
be removed or the unit’s defrost period will only last 3
seconds.
8. The control is shipped from the factory with the compressor
delay option selected. This will de-energize the
compressor contactor for 30 seconds on defrost initiation
and defrost termination. If the jumper is set to Normal,
the compressor will continue to run during defrost
initiation and defrost termination. The control will also
ignore the low pressure switch connected to R-PS1 and
PS2 for 5 minutes upon defrost initiation and 5 minutes
after defrost termination.
9. After the unit ’s defrost thermostat has terminated, check
the defrost thermostat for 24 volts between “DFT” and “C”.
The reading should indicate 0 volts (open sensor).
10. Shut off power to unit.
11. Replace outdoor fan motor lead to terminal “DF2” on
defrost board and turn on power.
AIRFLOW MEASUREMENT AND ADJUSTMENT
After reviewing Duct Work section, proceed with airflow measurements and adjustments. The unit blower curves (see Specification Sheets) are based on external static pressure (ESP per in/wc).
The duct openings on the unit are considered internal static pressure. As long as ESP is maintained, the unit will deliver the proper
air up to the maximum static pressure listed for the CFM required
by the application (i.e. home, building, etc.)
Generally, 400 CFM per ton of cooling capacity is a rule of thumb.
Some applications depending on the sensible and latent capacity
requirements may need only 350 CFM or up to 425 CFM per ton.
Check condition space load requirements (from load calculations)
and equipment expanded ratings data to match CFM and capacity.
After unit is set and duct work completed, verify the ESP with a
1-inch inclined manometer with pitot tubes or a Magnahelic gauge
and confirm CFM to blower curves in the Specification Sheets. All
units have three-speed blower motors. If low speed is not utilized, the speed tap can be changed to medium or high speed.
NOTE: Never run CFM below 350 CFM per ton, evaporator freezing or
poor unit performance is possible.
10
Page 11
Model Speed Volts
230
230
230
230
230
230
230
230
CFM
WATTS
CFM
WATTS
CFM
WATTS
CFM
WATTS
CFM
WATTS
CFM
WATTS
CFM
WATTS
CFM
WATTS
CFM
WATTS
DP13CM3641*
DP13CM4841*
DP13CM6041*
DP13CM3643*
DP13CM4843*
DP13CM6043*
LOW
MED
HIGH 230
T1
T2/T3
T4/T5
T1
T2/T3
T4/T5
E.S.P (In. of H
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
1122 1078 1032 972 915 804 687 558
338 330 321 310 300 283 264 250
1387 1331 1264 1209 1119 1041 935 748
456 440 428 412 399 382 363 330
1521 1454 1388 1311 1230 1144 1055 939
534 521 510 490 477 461 442 420
1451 1404 1356 1309 1262 1215 1168 1121
255 264 273 282 291 299 308 317
1809 1762 1715 1667 1620 1573 1526 1479
444 453 462 471 479 488 497 506
1885 1838 1790 1743 1696 1649 1602 1555
484 493 502 510 519 528 537 546
1774 1731 1688 1645 1602 1559 1515 1472
444 453 463 473 483 493 503 512
1891 1848 1804 1761 1718 1675 1632 1589
515 525 535 544 554 564 574 584
2105 2062 2018 1975 1932 1889 1846 1803
646 656 666 676 686 696 705 715
O)
2
NOTES:
• Data shown is dry coil.
Wet coil pressure drop is
approximately:
0.1” H
0, for two-row indoor
2
coil;
0.2” H2O, for three-row indoor
coil;
and 0.3” H20, for four-row
indoor coil.
• Data shown does not include
filter pressure drop, approx.
0.08” H20.
• Reduce airflow by 2% for 208volt operation.
Model Speed Volts
Low 230
Med 230
DP13HM2441*
High 230
Low 230
Med 230
DP13HM3041*
High 230
T1 230
T2/T3 230
DP13HM3641*
DP13HM3643*
T4/T5 230
Low 230
Med 230
DP13HM4241*
High 230
T1 230
T2/T3 230
DP13HM4841*
DP13HM4843*
T4/T5 230
T1 230
T2/T3 230
DP13HM6041*
DP13HM6043*
T4/T5 230
E.S.P (In. of H
O)
2
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
CFM 667 596 -------- -------- -------- -------- -------- --------
WATTS 153 150 --- ----- -------- -------- -------- -------- --------
CFM 897 841 784 713 610 -------- -------- --------
WATTS 233 229 224 217 207 -------- -------- --------
CFM 1242 1181 1122 1057 982 883 719 617
WATTS 373 364 354 344 333 318 298 284
CFM 1097 1059 1016 959 901 818 648 562
WATTS 337 330 324 315 305 290 271 257
CFM 1253 1204 1148 1097 1033 952 777 670
WATTS 397 388 379 369 356 342 313 297
CFM 1448 1380 1323 1258 1194 1106 1008 864
WATTS 499 483 472 459 446 427 410 382
CFM 867 789 711 632 554 --- --- ---
WATTS 77 84 90 97 103 --- --- ---
CFM 1272 1222 1173 1123 1074 1024 974 925
WATTS 233 230 236 243 249 256 262 269
CFM 1446 1396 1347 1297 1248 1198 1148 1099
WATTS 287 293 300 306 313 319 326 332
CFM 1122 1078 1032 972 915 804 687 558
WATTS 338 330 321 310 300 283 264 250
CFM 1387 1331 1264 1209 1119 1041 935 748
WATTS 456 440 428 412 399 382 363 330
CFM 1521 1454 1388 1311 1230 1144 1055 939
WATTS 534 521 510 490 477 461 442 420
CFM 1451 140 4 1356 1309 1262 1 215 1168 1121
WATTS 255 264 273 282 291 299 308 317
CFM 1809 176 2 1715 1667 1620 1 573 1526 1479
WATTS 444 453 462 471 479 488 497 506
CFM 1885 183 8 1790 1743 1696 1 649 1602 1555
WATTS 484 493 502 510 519 528 537 546
CFM 1774 173 1 1688 1645 1602 1 559 1515 1472
WATTS 444 453 463 473 483 493 503 512
CFM 1891 184 8 1804 1761 1718 1 675 1632 1589
WATTS 515 525 535 544 554 564 574 584
CFM 2105 206 2 2018 1975 1932 1 889 1846 1803
WATTS 646 656 666 676 686 696 705 715
11
Page 12
SPEED TAP ADJUSTMENTS FOR INDOOR BLOWER MOTOR
PSC Motor
Adjust the CFM by changing the speed tap of the indoor blower
motor at the EBTDR “COM” connection with one of the speed taps
on “M1” or “M2”. (Black-High Speed, Blue-Medium Speed, Red-Low
Speed.)
EEM Motor
Adjust the CFM by changing the 24V low voltage lead at the speed
terminal block on the motor. (T1-Low Speed, T2 and T3-Medium
Speed, T4 and T5-High Speed).
REFRIGERANT CHARGE CHECKS
After completing airflow measurements and adjustments, the unit’s
refrigerant charge must be checked. All package units are charged
to the superheat method at the compressor suction line (these
are fixed orifice devices). After superheat is adjusted it is recommended to check unit sub-cooling at the condenser coil liquid
line out. For charge adjustments, see superheat and subcooling
charts shown for each model.
SUPERHEAT CAN BE DETERMINED AS FOLLOWS:
1. Read suction pressure. Determine Saturated Suction
Temperature from tables or pressure gauge saturated
temperature scale (R-410A).
2. Read suction line temperature.
3. Use the following formula:
SUPERHEAT = SUCTION LINE TEMP - SAT. SUCTION TEMP
SATURATED SUCTION PRESSURE
TEMPERATURE CHART
SATURATED
SUCTION
PRESSURE
SUCTION
TEMPERATURE
SUCTION
PRESSURE
ºF
PSIG R-410A PSIG R-410A
50 1 78 20
52 3 80 21
54 4
56 6
58 7
60 8
62 10
64 11
66 13
68 14
70 15
72 16
74 17
85 24
90 26
95 29
100 31
110 36
120 41
130 45
140 49
150 53
160 56
170 60
76 19
Suction Pressure Temperature (R-410A)
SUBCOOLING = SAT. LIQUID TEMP. - LIQUID LINE TEMP.
SATURATED
SUCTION
TEMPERATURE
ºF
SATURATED LIQUID PRESSURE
TEMPERATURE C HART
SATURATED
LIQUID
PRESSURE
PSIG R-410A PSIG R-410A
200 70 375 112
210 73 405 118
220 76
225 78
235 80
245 83
255 85
265 88
275 90
285 92
295 95
305 97
325 101
355 108
Liquid Pressure Temperature (R-410A)
LIQUID
TEMPERATURE
ºF
LIQUID
PRESSURE
415 119
425 121
435 123
445 125
475 130
500 134
525 138
550 142
575 145
600 149
625 152
SATURATED
LIQUID
TEMPERATURE
ºF
DESIGN SUPERHEAT @ 95 °F
OUTDOOR AMBIENT TEMPERATURE
Model # SUPERHEAT ± 2°F
DP13CM3641/43 9
DP13CM4841/43 13
DP13CM6041/43 11
DP13HM2441 13
DP13HM3041 10
DP13HM3641/43 6
DP13HM4241 13
DP13HM4841/43 13
DP13HM6041/43 10
ELECTRICAL ADJUSTMENTS
This series of electric cooling and, heat pump package equipment
is designed to accept a field installed electric heat kit. The unit is
equipped to easily install the HKP or HKR Series single phase and
HKR3 Series 208-230 volt three phase Electric Heat Kits. Full Installation Instructions are included in this kit. Please use this document for guidance in field equipping the package unit with electric heat.
Choose the heat kit that fits the application for the specific installation. Permanently mark the unit’s nameplate with the model
being installed. High and low voltage connections are detailed in
the heat kit instructions.
Indoor Blower motor speed tap selection may need to be modified to accommodate normal continuous operation to prevent a
nuisance trip. See following table.
12
Page 13
ELECTRIC HEAT KW
UNIT MODEL # 5 8 10 15 20
DP13HM2441**
DP13HM3041**
DP13[H or C]M3641**
DP13HM4241**
DP13[H or C]M4841**
DP13[H or C]M6041**
M
M
M
(F)
(F)
(F)
M
(F)
MM
MM
3
(F)
3
(F)
3
(F)
3
(F)
M
M
H
(F)
H
(F)
3
(F)
3
(F)
(F)
(F)
H
H
3
3
HNA
HNA
NA
(F)
NA
(F)
3
(F)
(F)
(F)
3
(F)
ELECTRIC HEAT KW
DP13CM3643**
DP13CM4843**
DP13CM6043**
DP13HM3643**
DP13HM4843**
DP13HM6043**
*(F) - Factory Setting
Speed Taps Description: H / 4, 5 - High; M / 2, 3 - Medium; L / 1 - Low
3 speed (H)igh/(M)edi u m /( L )ow : P SC motor
4 speed (H)igh/(ML)Medium Low/ (MH) Medium High/(L)ow: PSC motor
1/2/3/4/5: EEM motor
--- --- ---
--- --- ---
--- --- --MM
3
(F)
3
(F)
3
(F)
3
(F)
H
3
3
H
3
3
H
(F)
3
(F)
3
(F)
NA
(F)
3
(F)
(F)
(F)
(F)
(F)
3
NA
3
3
(F)
(F)
(F)
(F)
MAINTENANCE
WARNING
HIGH VOLTAGE!
DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING
THIS UNIT.
TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR
DEATH.
The Self Contained Package Air Conditioner and Heat Pump should
operate for many years without excessive service calls if the unit
is installed properly. However it is recommended that the homeowner inspect the unit before a seasonal start up. The coils should
be free of debris so adequate airflow is achieved. The return and
supply registers should be free of any obstructions. The filters
should be cleaned or replaced. These few steps will help to keep
the product up time to a maximum. The Troubleshooting Chart (on
page 14) should help in identifying problems if the unit does not
operate properly.
MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE
OUTSIDE AIR INTO RETURN DUCT
Do not introduce cold outside air into the return duct of a heat
pump installation. Do not allow air entering the indoor coil to
drop below 65° F. Air below this temperature will cause low discharge pressure, thus low suction pressure, and excessive defrost
cycling resulting in low heating output. It may also cause false
defrosting.
UNDERCHARGE
An undercharged heat pump on the heating cycle will cause low
discharge pressure resulting in low suction pressure and frost
accumulation on the outdoor coil.
POOR “TERMINATING” SENSOR CONTACT
The unit’s defrost terminating sensor must make good thermal
contact with the outdoor coil tubing. Poor contact may not terminate the unit’s defrost cycle quickly enough to prevent the unit
from cutting out on high discharge pressure.
MALFUNCTIONING REVERSING VALVE - THIS MAY BE DUE TO:
1. Solenoid not energized - In order to determine if the solenoid
is energized, touch the nut that holds the solenoid cover
in place with a screwdriver. If the nut magnetically holds
the screwdriver, the solenoid is energized and the unit is
in the cooling cycle.
2. No voltage at unit’s solenoid - Check unit voltage. If no voltage,
check wiring circuit.
3. Valve will not shift:
a. Undercharged - check for leaks;
b. Valve Body Damaged - Replace valve;
c. Unit Properly Charged - If it is on the heating cycle, raise
the discharge pressure by restricting airflow through
the indoor coil. If the valve does not shift, tap it lightly
on both ends with a screwdriver handle. DO NOT TAP
THE VALVE BODY. If the unit is on the cooling cycle, raise
the discharge pressure by restricting airflow through
the outdoor coil. If the valve does not shift after the
above attempts, cut the unit off and wait until the
discharge and suction pressure equalize, and repeat
above steps. If the valve does not shift, replace it.
SERVICE
THE FOLLOWING INFORMATION IS FOR USE BY QUALIFIED SERVICE
AGENCY ONLY: OTHERS SHOULD NOT ATTEMPT TO SERVICE THIS EQUIPMENT.
Common Causes of Unsatisfactory Operation of Heat Pump on the
Heating Cycle.
INADEQUATE AIR VOLUME THROUGH INDOOR COIL
When a heat pump is in the heating cycle, the indoor coil is functioning as a condenser. The return air filter must always be clean,
and sufficient air volume must pass through the indoor coil to
prevent excessive discharge pressure, and high pressure cut out.
13
Page 14
TROUBLESHOOTING CHART
g
g
p
p
g
p
p
p
p
g
prop
SYMPTOM
High head - low suction a. Restriction in liquid line or flowrator a. Remove or replace with proper size flowrator.
High head - high or normal suction a. Dirt y condenser coil a. Clean coil.
Low head - high suction
Unit will not run
Condenser fan runs,
compressor doesn't
b. Overchar
c. Condenser fan not runnin
a. Incorrect flowrator a. Re
b. Defective com
c. Flowrator not seating properly c. Check for debris under flowrator or deformed
d. Defective reversing valve d. Replace reversing valve.
a. Power off or loose electrical connection a. Check for unit voltage at contactor in unit.
b. Thermostat out of calibration set too hi
c. Defective contactor c. Check for 24 volts at contactor coil replace if
d. Blow n fuses or tripped breaker d. Replace fuse or reset breaker.
e. Transformer defective e.
f. High or low pressure control open
(Optional)
g. Compressor overload contacts open g. Replace compressor.
a. Loose connection a. Check for unit voltage at compressor check &
b. Compressor stuck, grounded or open
winding open internal overload
c. Low voltage connection c. At compressor terminals, voltage must be within
ed b. Correct System charge.
c. Repair or Replace.
lace with correct flowrator.
ressor valves b. Repla ce compressor.
flowrator. Remove debris or replace flowrator.
h b. Reset.
contacts are open.
Check wiring - replace transformer.
f. Reset high pressure control or check unit charge.
High pressure control opens at 610 psig.
Low
ressure control opens at 22 psig.
NOTE: Wait at least 2 hours for overload to reset.
tight en all connections.
b. Wait at least 2 hours for overload to reset If still
open, replace the compressor.
10 % of nameplate volts when unit is operating.
REMEDYPOSSIBLE CAUSE
d. Capacitor weak, open, or shorted d. Check capacitor. If defective, replace.
Low suction - cool compressor a. a.
Iced evaporator coil
Compressor short cycles
Registers sweat Low airflow
High suction pressure
Insufficient cooling
Low indoor airflow
a. Defective overload protector a. Replace - check for correct voltage.
b. Unit cycling on low pressure control b. Check refrigerant charge and / or airflow.
a. a. Increase s
a. Excessive load a. Recheck load calculation.
b. Defective com
c. Reversin
a. Im
b. Improper airflow b. Check - should be approximately 400 CFM per
c. Incorrect refrigerant charge. c. Charge per procedure attached to unit service
d. Incorrect voltage d. At compressor terminals, voltage must be within
erly sized unit a. Recalculate load.
ressor b. Replace.
valve not seating properly.c.Replace.
14
Increase speed of blower or reduce restriction replace air filters.
eed of blower or reduce restriction
re
lace air filters.
ton.
panel.
10% of nameplate volts when unit is operating.
Page 15
47
47
APPENDIX
UNIT DIMENSIONS
POWER
POWER
WIRE
WIRE
ENTRANCE
ENTRANCE
4 1/8
4 1/8
2 1/8
2 1/8
6 ½
6 ½
1 3/8
1 3/8
16
16
8
8
51
51
5 ½
5 ½
?
?
A
16
16
B
B
A
2 34
2 34
SUCTION/LIQUID
SUCTION/LIQUID
PRESSURE PORT
PRESSURE PORT
CONDENSATE
CONDENSATE
DRAIN
DRAIN
CONNECTION
CONNECTION
3/4” NPT FEMALE
3/4” NPT FEMALE
MEDIUM CHASSIS
DP13*M244**
DP13*M304**
DP13*M364**
DP13*M424**
LARGE CHASSIS
DP13*M484**
DP13*M604**
18 7/8
18 7/8
?
?
B
B
3
3
CONTROL
CONTROL
WIRE
WIRE
ENTRANCE
ENTRANCE
SUPPLY
SUPPLY
RETURN
RETURN
BLOWER
BLOWER
ACCESS PANEL
ACCESS PANEL
15
Page 16
12” MIN
36” MIN
(F OR
SERVICE)
MINIMUM CLEARANCES
48” MIN
.
4”
MIN
12” MIN
36” MIN
(FOR SERVICE)
NOTE: Roof overhang should be no m or e than 36”
RECOMMENDED FILTER SIZES
UNIT 2 ton 2-1/2 ton 3 ton 3-1/2 ton 4 ton 5 ton
Min. Filter Size (1) 25x25x 1 (1) 25x25x1 (1) 25x25x1 (1) 25x25x1 (2) 20x20x1 (2) 20x2 0x 1
Our continuing commitment to quality products may mean a change in specifications without notice.
© 2013
5151 San Felipe St., Suite 500, Houston, TX 77056
www.daikincomfort.com
16
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