Intertherm S(T)4BX Installation guide

Intertherm
Brand
Intertherm
Model
S(T)4BX
Category
Heat pumps
Type
Installation guide
INSTALLATION INSTRUCTIONS
DO NOT DESTROY. PLEASE READ CAREFULLY AND KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.
IMPORTANT
ATTENTION INSTALLERS:
It is your responsibility to know this product better than your customer. This includes being able to install the product
according to strict safety guidelines and instructing the customer on how to operate and maintain the equipment for
the life of the product. Safety should always be the deciding factor when installing this product and using common
sense plays an important role as well. Pay attention to all safety warnings and any other special notes highlighted
in the manual. Improper installation of the furnace or failure to follow safety warnings could result in serious injury,
death, or property damage.
These instructions are primarily intended to assist qualified individuals experienced in the proper installation of
this appliance. Some local codes require licensed installation/service personnel for this type of equipment. Please
read all instructions carefully before starting the installation. Return these instructions to the customer’s package
for future reference.
Single & Three Phase, R-410A, 1- 5 Ton units
IMPORTANT SAFETY INFORMATION ................. 2
UNIT INSTALLATION ............................................ 3
General Information ....................................................... 3
Before You Install the Unit .............................................. 3
Locating the Equipment ................................................. 3
Packaging Removal ....................................................... 3
Ground Level .................................................................. 3
Rooftop .......................................................................... 3
Connecting Refrigerant Tubing Between the
Indoor & Outdoor Unit .................................................... 4
ELECTRICAL WIRING ........................................... 4
Pre-Electrical Checklist .................................................. 4
Line Voltage ................................................................... 4
Thermostat / Low Voltage Connections ......................... 5
Grounding ...................................................................... 5
Unbalanced 3-Phase Supply Voltage ............................. 5
Reverse Rotation Verification ......................................... 6
STARTUP & ADJUSTMENTS ............................... 6
Pre - Start Checklist ....................................................... 6
Start-up Procedures ....................................................... 6
Air Circulation - Indoor Blower .......................................6
Short Cycle Protection ................................................... 6
System Cooling .............................................................. 6
System Heating .............................................................. 6
Defrost Cycle Timer ....................................................... 6
Defrost Control Board .................................................... 7
Operational Information ............................................... 7
Normal Defrost Operation............................................ 7
Defrost Test Procedure ................................................ 7
Anti Short Cycle Timer Test ............................................ 7
Refrigerant Charging...................................................... 7
Charging the Unit in AC Mode with
Outdoor Temperatures Above 55° F............................... 8
UNIT MAINTENANCE ............................................ 8
COMPONENT FUNCTIONS .................................. 9
REPLACEMENT PARTS ........................................ 9
CHARGING TABLES - COOLING MODE ........... 10
Air Conditioner Charging Tables ................................. 10
Table 2. Charging Table for 1 Ton Units ..................... 10
Table 3. Charging Table for 1.5 Ton Units .................. 11
Table 4. Charging Table for 2 Ton Units ..................... 11
Table 5. Charging Table for 2.5 Ton Units .................. 11
Table 6. Charging Table for 3 Ton Units ..................... 12
Table 7. Charging Table for 3.5 Ton Units .................. 12
Table 8. Charging Table for 4 Ton Units ..................... 12
Table 9. Charging Table for 5 Ton Units ..................... 13
Heat Pump Charging Tables ....................................... 13
Table 10. Charging Table for 1 Ton Units ................... 13
Table 11. Charging Table for 1.5 Ton Units ................ 13
Table 12. Charging Table for 2 Ton Units ................... 14
Table 13. Charging Table for 2.5 Ton Units ................ 14
Table 14. Charging Table for 3 Ton Units ................... 14
Table 15. Charging Table for 3.5 Ton Units ................ 15
Table 16. Charging Table for 4 Ton Units ................... 15
Table 17. Charging Table for 5 Ton Units ................... 15
CHARGING TABLES - HEATING MODE ............ 16
Table 18 Charging Table for 1 Ton Units .................... 17
Table 19. Charging Table for 1.5 Ton Units ................ 17
Table 20. Charging Table for 2 Ton Units ................... 17
Table 21. Charging Table for 2.5 Ton Units ................ 18
Table 22. Charging Table for 3 Ton Units ................... 18
Table 23. Charging Table for 3.5 Ton Units ................ 18
Table 24. Charging Table for 4 Ton Units ................... 19
Table 25. Charging Table for 5 Ton Units ................... 19
WIRING DIAGRAMS ............................................ 20
Figure 2. Single Phase Air Conditioner ...................... 20
Figure 3. Three Phase Air Conditioner ...................... 21
Figure 4. Single Phase Heat Pump ........................... 22
Figure 5. Three Phase Heat Pump ............................ 23
INSTALL. / PERFORMANCE CHECKLIST ......... 24
Export Series Split System Air Conditioners & Heat Pumps
2
WARNING:
ELECTRICAL SHOCK, FIRE OR EXPLOSION
HAZARD
Failure to follow safety warnings exactly could
result in serious injury or property damage.
Improper servicing could result in dangerous
operation, serious injury, death or property
damage.
• Before servicing, disconnect all electrical
power to the indoor blower.
• Whenservicingcontrols,labelallwiresprior
to disconnecting. Reconnect wires correctly.
• Verifyproperoperationafterservicing.
WARNING:
Split System Air Conditioners & Heat Pumps
leave the factory with a nitrogen holding charge.
Follow all charging instructions for maximum
unit performance and efficiency. Some local
codes require licensed installation/service
personnel to service this type of equipment.
Refrigerant charging must be done by qualified
personnel familiar with safe and environmentally
responsible refrigerant handling procedures.
Under no circumstances should the owner
attempt to install and/or service this equipment.
Failure to comply with this warning could result
in property damage, personal injury, or death.
CAUTION:
Split System Air Conditioners & Heat Pumps
use R-410A refrigerant. DO NOT use any other
refrigerant in these units. Use of another
refrigerant will damage these units.
WARNING:
Unless noted otherwise in these instructions,
only factory authorized parts or accessory
kits may be used with this product. Improper
installation, service, adjustment, or maintenance
may cause explosion, fire, electrical shock or
other hazardous conditions which may result
in personal injury or property damage.
WARNING:
The information listed below and the next page
must be followed during the installation, service,
and operation of this furnace. Failure to follow
safety recommendations could result in possible
damage to the equipment, serious personal
injury or death.
• The installer must comply with all local codes and
regulations which govern the installation of this type
of equipment. Local codes and regulations take
precedence over any recommendations contained in
these instructions. Consult local building codes and
the National Electrical Code (ANSI CI) for special
installation requirements.
• Thisequipmentcontainsliquidandgaseousrefrigerant
under high pressure. DO NOT USE ANY PORTION OF
THE CHARGE FOR PURGING OR LEAK TESTING.
Installation or servicing should only be performed by
qualified trained personnel thoroughly familiar with this
type equipment.
• Allelectricalwiringmustbecompletedinaccordance
with local, state and national codes and regulations
and with the National Electric Code (ANSI/NFPA 70)
or in Canada the Canadian Electric Code Part 1 CSA
C.22.1.
• Installation of equipment may require brazing
operations. Installer must comply with safety codes
and wear appropriate safety equipment (safety glasses,
work gloves, fire extinguisher, etc.) when performing
brazingoperations.
• Followallprecautionsintheliterature,ontags,and
on labels provided with the equipment. Read and
thoroughly understand the instructions provided with
the equipment prior to performing the installation and
operational checkout of the equipment.
• Usecautionwhenhandlingthisapplianceorremoving
components. Personal injury can occur from sharp
metal edges present in all sheet metal constructed
equipment.
• Fullyannealed,refrigerantgradecoppertubingshould
be used when installing the system. Refrigerant suction
line tubing should be fully insulated.
• Thisunitisdesignedforoutdoorinstallationsonlyand
should be positioned as described on page 3.
IMPORTANT SAFETY INFORMATION
INSTALLER: Please read all instructions before servicing
this equipment. Pay attention to all safety warnings and
any other special notes highlighted in the manual. Safety
markings are used frequently throughout this manual to
designate a degree or level of seriousness and should not
be ignored. WARNINGindicatesapotentiallyhazardous
situation that if not avoided, could result in personal injury
or death. CAUTION indicates a potentially hazardous
situation that if not avoided, may result in minor or moderate
injury or property damage.
3
UNIT INSTALLATION
General Information
Split system series air conditioners and heat pumps
are designed only for outdoor rooftop or ground level
installations. These units have been tested for capacity
and efficiency in accordance with AHRI Standards and
will provide many years of safe and dependable comfort,
providing they are properly installed and maintained.
Abuse, improper use, and/or improper maintenance can
shortenthelifeoftheapplianceandcreateunsafehazards.
Toachieveoptimumperformanceandminimizeequipment
failure, it is recommended that periodic maintenance be
performed on the unit. The ability to properly perform
maintenance on this equipment requires certain
mechanical skills and tools.
Before You Install the Unit
√ The cooling load of the area to be conditioned must be
calculated and a system of the proper capacity selected.
It is recommended that the area to be conditioned be
completely insulated and vapor sealed.
√ Check the electrical supply and verify the power supply
is adequate for unit operation. The system must be wired
and provided with circuit protection in accordance with
local building codes. If there is any question concerning
the power supply, contact the local power company.
√ The indoor section (air handler, furnace, etc) should be
installed before routing the refrigerant tubing. Refer to
the indoor unit's installation instructions for installation
details.
√ All units are securely packed at the time of shipment and
upon arrival should be carefully inspected for damage
prior to installing the equipment at the job site. Verify
coil fins are straight. If necessary, comb fins to remove
flattened or bent fins. Claims for damage (apparent or
concealed) should be filed immediately with the carrier.
√ Please consult your dealer for maintenance information
and availability of maintenance contracts. Please read
all instructions before installing the unit.
Locating the Equipment
• Surveythejobsitetodeterminethebestlocationfor
mounting the outdoor unit.
• Overhead obstructions (Figure 1), poorly ventilated
areas, and areas subject to accumulation of debris
should be avoided.
• Sufcientclearanceforunobstructedairowthroughthe
outdoor coil must be maintained in order to achieve rated
performance. See Figure 1 for minimum clearances to
obstructions.
• Considerationshouldbegiventoavailabilityofelectric
power, service access, noise, and shade.
Packaging Removal
To prevent damage to the tubing connections, carefully
remove the carton and user’s manual from the equipment.
Discard the shipping carton.
Ground Level
Ground level installations must be located according to
local building codes or ordinances and these requirements:
• Clearancesmustbeinaccordancewiththoseshown
in Figure 1.
• A suitable mounting pad (must be provided andbe
separate from the building foundation. The pad must
be level and strong enough to support the unit’s weight.
The slab height must be a minimum of 2” (5 cm) above
grade and with adequate drainage. See Figure 1.
Rooftop
• The method of mounting should be designed so that it
does not overload roof structures or transmit noise to
the interior of the structure. The roof must be structurally
capable of handling the weight of the unit.
• Full perimeter support is required under the unit.
Support must be made of weather resistant materials
and installed prior to unit installation.
• Thesupportmustbebuilttoraisetheunit6"above
the roof.
Figure 1. Clearance Requirements
2” Mounting Pad
48”
24" for
Service Access
12" or 18”
See Note
12" or 18”
See Note
DO NOT
OBSTRUCT
TOP OF UNIT
NOTE: Units require full perimeter clearances.
Installer must maintain 18” between two units
or 12” between single unit and structure.
6” from Building
or Structure
4
Connecting Refrigerant Tubing Between
the Indoor & Outdoor Unit
CAUTION:
When servicing, cover or seal openings to
minimize the exposure of the refrigerant system
to air to prevent accumulation of moisture and
other contaminants.
After outdoor and indoor unit placement has been
determined, route refrigerant tubing between the
equipment in accordance with sound installation practices.
• When connecting refrigerant linesets together, it is
recommended that dry nitrogen be flowing through the
jointsduringbrazing.Thiswillpreventinternaloxidation
and scaling from occurring.
• Refrigeranttubingshouldberoutedinamannerthat
minimizesthelengthoftubingandthenumberofbends
in the tubing.
• Refrigeranttubingshouldbesupportedinamanner
that the tubing will not vibrate or abrade during system
operation.
• Tubingshouldbekeptcleanofforeigndebrisduring
installation.
• Everyeffortshouldbemadebytheinstallertoensure
that the field installed refrigerant containing components
of the system have been installed in accordance with
these instructions and sound installation practices to
insure reliable system operation and longevity.
• The maximum recommended interconnecting
refrigerant line length is 75 feet, and the vertical
elevation difference between the indoor and outdoor
sections should not exceed 20 feet.
• If precise forming of refrigerant lines is required, a
copper tubing bender is recommended. Avoid sharp
bends and contact of the refrigerant lines with metal
surfaces.
• A lter dryer is provided with the unit and must be
installed in the liquid line of the system. If the installation
replaces a system with a filter dryer already present
in the liquid line, the filter dryer must be replaced with
the one supplied with the unit. The filter dryer must be
installed in strict accordance with the manufacturer’s
installation instructions.
• Optionalequipmentsuchasliquidlinesolenoidvalves,
low ambient, etc., should be installed in strict accordance
with the manufacturer’s installation instructions.
ELECTRICAL WIRING
WARNING:
To avoid risk of electrical shock, personal
injury, or death, disconnect all electrical power
to the unit before performing any maintenance
or service. The unit may have more than one
electrical supply.
Label all wires prior to disconnection when
servicing the unit. Wiring errors can cause
improper and dangerous operation
• Allelectricalconnectionsmustbeincompliancewith
all applicable local codes and ordinances, and with the
current revision of the National Electric Code (ANSI/
NFPA 70).
• ForCanadianinstallationstheelectricalconnections
and grounding shall comply with the current Canadian
Electrical Code (CSA C22.1 and/or local codes).
Pre-Electrical Checklist
√ Verify that the voltage, frequency, and phase of the
supply source match the specifications on the unit
rating plate.
√ Verify that the service provided by the utility is sufficient
to handle the additional load imposed by this equipment.
Refer to the unit wiring label for proper high and low
voltage wiring.
√ Verify factory wiring is in accordance with the unit
wiring diagram (Figures 12-15, pages 21-24). Inspect
for loose connections.
√ Phase balance on 3 phase units must always be
checked. See Unbalanced 3-Phase Supply Voltage
section (page 7).
LineVoltage
• Awiringdiagramislocatedontheinsidecoverofthe
electrical box of the outdoor unit. The installer should
become familiar with the wiring diagram before making
any electrical connections to the outdoor unit.
• An electrical disconnect must be located within
sight of and readily accessible to the unit. This
switchshallbecapableofelectricallyde-energizing
the outdoor unit. The means for disconnection from
the supply must have a contact separation of at least
3mminallpoles.ForAustrianinstallations,a"Type
A"residualcurrentdevicemustbeused.
• Line voltage to the unit should be supplied from a
dedicated branch circuit containing the correct fuse
or circuit breaker for the unit. Incoming field wiring
andminimumsizeofelectricalconductorsandcircuit
protection must be in compliance with information listed
on the outdoor unit data label. Any other wiring methods
must be acceptable to authority having jurisdiction.
• Theoutdoorunitrequiresbothpowerandcontrolcircuit
electrical connections. Refer to the wiring diagrams
for identification and location of outdoor unit field
5
wiring interfaces. Make all electrical connections in
accordance with all applicable codes and ordinances.
• Overcurrentprotectionmustbeprovidedatthebranch
circuitdistributionpanelandsizedasshownontheunit
rating label and according to applicable local codes.
See the unit rating plate for minimum circuit ampacity
and maximum overcurrent protection limits.
• Providepowersupplyfortheunitinaccordancewiththe
unit wiring diagram, and the unit rating plate. Connect
the line-voltage leads to the terminals on the contactor
inside the control compartment.
• Useonlycopperwireforthelinevoltagepowersupply
to this uni. Use proper code agency listed conduit and
a conduit connector for connecting the supply wires to
the unit. Use of rain tight conduit is recommended.
• 208/230Voltunitsareshippedfromthefactorywired
for 230 volt operation. For 208V operation, remove the
lead from the transformer terminal marked 240V and
connect it to the terminal marked 208V.
• Optionalequipmentrequiringconnectiontothepower
or control circuits must be wired in strict accordance
of the NEC (ANSI/NFPA 70), applicable local codes,
and the instructions provided with the equipment.
Thermostat/LowVoltageConnections
• Thermostatconnectionsshouldbemadeinaccordance
with the instructions supplied with the thermostat and
the indoor equipment.
• Theoutdoorunitisdesignedtooperatefroma24VAC
Class II control circuit. The control circuit wiring must
comply with the current provisions of the NEC (ANSI/
NFPA 70) and with applicable local codes having
jurisdiction.
• Thelowvoltagewiresmustbeproperlyconnectedto
the units low voltage terminal block.
• The thermostat should be mounted about 5 feet
above the floor on an inside wall. DO NOT install the
thermostat on an outside wall or any other location
where its operation may be adversely affected by radiant
heat from fireplaces, sunlight, or lighting fixtures, and
convective heat from warm air registers or electrical
appliances. Refer to the thermostat manufacturer’s
instruction sheet for detailed mounting and installation
information.
Grounding
WARNING:
The unit cabinet must have an uninterrupted or
unbroken electrical ground to minimize personal
injury if an electrical fault should occur. Do not
use gas piping as an electrical ground!
This unit must be electrically grounded in accordance
with local codes or, in the absence of local codes, with
the National Electrical Code (ANSI/NFPA 70) or the CSA
C22.1 Electrical Code. Use the grounding lug provided in
the control box for grounding the unit.
Example:
AB = 451V
BC = 460V
AC = 453V
2. Determine the average voltage in the power supply.
3. Determine the maximum deviation:
4. Determine percent of
voltage imbalance by
using the results from
steps 2 & 3 in the following
equation.
maxvoltage deviation
fromaverage voltage
=100 x
averagevoltage
% Voltage Imbalance
= 1.32%
6
454
100
x
Example:
1. Measure the line voltages
of your 3-phase power
supply where it enters the
building and at a location
that will only be dedicated
to the unit installation (at
the units circuit protection
or disconnect).
Unbalanced3-PhaseSupplyVoltage
Voltage unbalance occurs when the voltages of all phases
of a 3-phase power supply are no longer equal. This
unbalance reduces motor efficiency and performance.
Some underlying causes of voltage unbalance may include:
Lack of symmetry in transmission lines, large single-phase
loads, and unbalanced or overloaded transformers. A
motor should never be operated when a phase imbalance
in supply is greater than 2%. Perform the following steps
to determine the percentage of voltage imbalance:
In this example, the measured line voltages were
451, 460, and 453. The average would be 454 volts
(451 + 460 + 453 = 1,364 / 3 = 454).
The amount of phase imbalance (1.32%) is satisfactory
since the amount is lower than the maximum allowable
2%. Please contact your local electric utility company if
your voltage imbalance is more than 2%.
Example:
From the values given in step 1, the BC voltage
(460V) is the greatest difference in value from
the average:
460 - 454 = 6
454 - 451 = 3
454 - 453 = 1
Highest Value
6
NOTE: On 3 phase air handler models only - If blower
is spinning opposite of arrow direction, shut off the main
power to the unit and switch any two field wires at the
disconnect. DO NOT alter unit wiring.
Short Cycle Protection
1. Operate the system in cooling mode and observe the
temperature setting of the thermostat. Gradually raise
theset-pointtemperatureuntiltheunitde-energizes.
2. Immediately lower the set point temperature of the
thermostat to its original setting and verify that the
indoorblowerisenergizedandoutdoorunitremains
de-energized.
3. After approximately 5 minutes, verify the outdoor unit
energizesandthetemperatureofthedischargeairis
cooler than the room temperature.
System Cooling
1. Set the thermostat’s system mode to COOL and the
fan mode to AUTO. Gradually lower the thermostat
temperature setpoint below room temperature and
verifytheoutdoorunitandindoorblowerenergize.
2. Verify blower wheel is spinning in direction indicated by
arrow. Feel the air being circulated by the indoor blower
and verify that it is cooler than ambient temperature.
Listen for any unusual noises. If unusual sounds occur,
determine the source of the noise and correct as
necessary.
3. Verify HI and LO refrigerant pressures.
NOTE: If refrigerant pressures are abnormal and the
compressor is rotating backwards, shut off main power to
the unit and switch any two field wires at the disconnect.
DO NOT alter unit wiring.
4. Allow the system to operate for several minutes and then
set the temperature selector above room temperature.
Verify the fan and compressor cycle off with the
thermostat. NOTE: The blower should also stop unless
fan switch is set to the ON position.
System Heating
1. Set the thermostat's system mode to HEAT and the
temperature mode to below room temperature.
2. Verify the outdoor unit and indoor fan stop running. After
5 minutes, increase the temperature on the thermostat
to it's maximum setting.
3. Verifytheoutdoorunitandindoorblowerenergize.Feel
the air being circulated by the indoor blower and verify
that it is warmer than ambient temperature. Listen for
any unusual noises. If unusual sounds occur, determine
the source of the noise and correct as necessary.
Defrost Cycle Timer
The defrost cycle timer controls the time interval of the hot
gas defrost after the defrost sensor closes. It is located in
the lower left corner of the defrost control board on the of
the control panel. Three interval settings are available: 30,
60, and 90 minutes. Time setting selection is dependent
on the climate where the unit is being installed.
ReverseRotationVerication
After making all of the power connections to the unit, the
rotation of the compressor must be checked. If the rotation
is in the wrong direction, the compressor will make an
abnormally loud noise. To check the rotation perform the
following steps:
1. Make sure the outside power disconnect is in the OFF
position.
2. Set the indoor thermostat to a set point that will call for
cooling.
3. Retun to the outside power disconnect and switch it
to the ON position. If the compressor is making an
abnormally loud noise, immediately switch the outside
power disconnect to the OFF position.
4. Switch any two of the three power leads at the power
connections to the unit.
5. SetReturn to the outside power disconnect and swith
it to the ON position.
6. Verify that the compressor is now running properly.
START UP & ADJUSTMENTS
Pre-Start Check List
√ Verify the unit is level and has sufficient clearances for
unobstructed airflow.
√ Verify the outdoor coil and top of the unit are free from
obstructions and debris, and all equipment access/
control panels are in place.
√ Verify that the line voltage power leads are securely
connected and the unit is properly grounded.
√ Verify that the low voltage wires are securely connected
to the correct leads on the low voltage terminal strip.
√ Verify that the power supply branch circuit overcurrent
protectionissizedproperly.
√ Verify that the thermostat is wired correctly.
Start-Up Procedures
WARNING:
This unit is equipped with a crankcase heater.
Allow 24 hours prior to continuing the start up
procedures to allow for heating of the refrigerant
compressor crankcase. Failure to comply may
result in damage and could cause premature
failure of the system. This warning should be
followed at initial start up and any time the power
has been removed for 12 hours or longer.
Air Circulation - Indoor Blower
1. Set the thermostat system mode on OFF and the fan
mode to ON.
2. Verify the blower runs continuously. Check the air delivery
at the supply registers and adjust register openings for
balanced air distribution. If insufficient air is detected,
examine ductwork for leaks or obstructions.
3. Set the thermostat fan mode to AUTO and verify the
blower stops running.
7
• Indryclimates,a90minutesettingisrecommended.
• Inmoistclimates,a30minutesettingisrecommended.
To set the cycle timer, place the timing pin on the defrost
control board to the desired time interval post.
NOTE: All units are shipped from the factory with the
default time setting of 30 minutes. Longer settings are
recommended for drier climate areas and shorter time
intervals are recommended for moist climate areas.
Maximum heating performance can be acheived by setting
the time to 90 minutes.
Defrost Control Board
Operational Information
• Terminals R - RC must have 24±V present between
them in order for the time delay and defrost sequences
to be operational.
• AjumperbetweentheT2 - DFT test pins will communicate
to the board that the defrost T-stat is closed (if the
compressor is running). The defrost thermostat tells the
board whether a defrost cycle needs to be started or
terminated. NOTE: The defrost T-stat is closed at 32° F
or below and is open at 68° F or above, but it’s state is
unknown if the temperature is between 32° F and 68°
F.
• With the DFT closed, the unit will run for 30/60/90
minutes in heat mode and then defrost the outdoor
coil. The defrost will turn off the outdoor fan, turn on the
compressor and raise the coil temperature to 68° F. This
will open the DFT and terminate the defrost. If the DFT
does not open the defrost will end after 10 minutes.
• Toover-ridethedefrostboardandinitiateafasterdefrost
test in 5, 10 or 15 seconds as determined by the 30, 60
or 90 minute defrost pin settings (factory setting is 30
minutes), jumper the TEST terminal to the C (common)
terminal while the compressor is in heat mode.
– This will bypass the compressor off delay when the
unit goes into defrost test and if left in defrost test, the
delay will be bypassed when the test is terminated
by the processor. NOTE: If the jumper is removed
before the test is over, the processor will perform the
remainder of a normal defrost. See bullett 2 above.
• To switch from no-delay to delay, remove the pin from
the no - delay pin location and shift it to the delay pin
location. The delay/no-delay pin concerns compressor
operation during defrosts. The default setting is delay.
– Reciprocating compressors should only use this
setting in conjunction with an approved hard start
kit.
– Scroll compressors that have noise issues while
going into or coming out of defrost should use this
30 second delay to reduce the defrost noise.
– Manually initiating a defrost will cause the compressor
to run continually when entering defrost.
Normal defrost operation
To test normal defrost operation when the temperature is
above 35° F, jumper R to DFT on the board and allow the
unit to run for 30 minutes. Defrost will continue until the
R to DFT jumper is removed or for 10 minutes. Remove
the jumper.
The 5 minute time delay feature can be shortened 1 time
to 1 second by jumping the Test to C terminal. Remove
the jumper and repeat as desired.
NOTE: If jumper is left on the Test to common pins
permanently, the defrost cycle will become inoperable.
Defrost Test Procedure
1. Jumper T2 to DFT at the test terminals.
2.Withunitrunninginheatmode,shorttheTEST terminal
to the common terminal near it. This will speed up the
board and cause it to enter defrost mode in 5/10/15
seconds depending on the defrost time selection.
Compressor delay will not function during speed-up.
3. This test will end in 5 seconds if the TEST-common
short is not removed.
4. Remove both the short and the T2 to DFT jumper to
terminate the defrost cycle. The 30 second compressor
delay should operate normally.
5. Test is complete, reset thermostat to home owner
preference.
Anti Short Cycle Timer Test
The 5 minute time delay feature can be bypassed or
shortened to 1 second by jumping the Test to C terminal.
NOTE: If jumper is left on the Test to common pins
permanently, the defrost cycle will become inoperable.
Refrigerant Charging
WARNING:
Split System Air Conditioners & Heat Pumps
leave the factory with a nitrogen holding charge.
Follow all charging instructions for maximum
unit performance and efficiency. Some local
codes require licensed installation/service
personnel to service this type of equipment.
Refrigerant charging must be done by qualified
personnel familiar with safe and environmentally
responsible refrigerant handling procedures.
Under no circumstances should the owner
attempt to install and/or service this equipment.
Failure to comply with this warning could result
in property damage, personal injury, or death.
After refrigerant line connections are completed, it is
required that you leak check and evacuate the indoor
section and all line connections (using proper methods)
beforenalizingthefullsystemrefrigerantcharge.
8
• Toachieveratedcapacityandefciency,thecompressor
must be exposed to refrigerant for at least 24 hours
prior to running and then the compressor must be run
for a minimum of 12 hours.
• Coolingmodechargingchartsareapplicableonlyto
matched assemblies of NORDYNE equipment and
listed airflows for the indoor coil. Outdoor units with
non-AHRI lsited indoor coils are not recommended and
deviations from rated airflows or non-listed combinations
may require modification to the expansion device and
refrigerant charging procedures for proper and efficient
system operation. Refer to Table 1 for correct restrictor
sizesandTables2-17(pages10-15)todeterminethe
ideal amount of sub-cooling for a given liquid pressure.
• Therefrigerantchargecanbecheckedandadjusted
through the service ports provided external to the
outdoor unit. Use only gage line sets which have a
“Schrader” depression device present to actuate the
valve. A common suction port for heating mode charging
is included and located on the compressor access panel
above the outdoor unit service valves.
• HeatModeVericationTables(Tables18-25,pages
17 - 19) are provided for quick reference when the unit
is in heating mode and for the inspection of the liquid
line pressures and temperatures.
Charging the Unit in AC Mode with Outdoor
Temperatures Above 55° F
(for optimized sub-cooling of 10° F to 12° F)
1. With thesystem operating atsteady-state,measure
the liquid refrigerant pressure (in PSIG) at the outdoor
unit service valve.
2. Measure the liquid refrigerant temperature (in
Fahrenheit) at the service valve.
3. Determine the required liquid refrigerant pressure. Refer
to Tables 2 - 17 (pages 10 - 15).
• IfthepressuremeasuredinStep1isgreaterthan
the required liquid refrigerant pressure determined in
Step 3, then there is too much charge in the system.
Remove refrigerant and repeat Steps 1 through 3
until the system is correctly charged.
• IfthepressuremeasuredinStep1islessthanthe
required liquid refrigerant pressure determined in
Step 3, there is too little charge in the system. Add
refrigerant and repeat Steps 1 through 3 until the
system is correctly charged.
UNIT MAINTENANCE
WARNING:
To prevent electrical shock, personal injury, or
death, disconnect all electrical power to the unit
before performing any maintenance or service.
The unit may have more than one electrical
supply.
Proper maintenance is important to achieve optimum
performance from the heat pump. The ability to properly
perform maintenance on this equipment requires certain
mechanical skills and tools. If you do not possess these
skills, contact your dealer for maintenance. Consult your
local dealer about the availability of maintenance contracts.
Routine maintenance should include the following:
• Inspectandcleanorreplaceairltersatthebeginning
of each heating and cooling season, or more frequently
if required.
• Inspecttheoutdoorcoilatthebeginningofeachcooling
season. Remove any debris. Clean the outdoor coil
and louvers as necessary using a mild detergent and
water. Rinse thoroughly with water.
• Inspecttheelectricalconnectionsfortightnessatthe
beginning of each heating and cooling season. Service
as necessary.
CAUTION:
The unit should never be operated without a
filter in the return air system. Replace disposable
filters with the same type and size.
• Donotaddadditionaloiltomotorsunequippedwithoil
tubes. The compressor is hermetically sealed at the
factory and does not require lubrication.
Table 1. Orifice Usage for Split System Air
Conditioners & Heat Pumps
Model
Restrictor
Size (Inch)
System Charge
R-410A (oz.)
Indoor
Outdoor
(Heat Pumps)
A/C H.P.
2 Ton 0.057 0.049 65 75
2 1/2 Ton 0.064 0.057 68 78
3 Ton 0.069 0.061 70 82
4 Ton 0.077 0.064 88 100
5 Ton 0.083 0.066 93 105
9
COMPONENT FUNCTIONS
High Pressure Switch (HPS) - A high-pressure switch is
factory-installed and located in the compressor discharge
line internal to the outdoor unit. The switch is designed to
de-energizethesystemwhenveryhighpressuresoccur
during abnormal conditions. Under normal conditions, the
switch is closed. If the discharge pressure rises above
575psig,thentheswitchwillopenandde-energizethe
outdoor unit. The switch will close again once the liquid
pressure decreases to 460 psig. Please note that the
switchinterruptsthethermostatinputstotheunit.When
the switch opens and then closes, there will be a 5 minute
shortcyclingdelaybeforetheoutdoorunitwillenergize.
Low Pressure Switch (LPS) - A low-pressure switch is
factory-installed in select models only. If provided, this
located in the suction line internal to the outdoor unit. The
switch is designed to protect the compressor from a loss
of charge. Under normal conditions, the switch is closed.
If the suction pressure falls below 5 psig, then the switch
willopenandde-energizetheoutdoorunit.Theswitch
will close again once the suction pressure increases
above 20 psig. Please note that the switch interrupts the
thermostatinputstotheunit.Whentheswitchopensand
then closes, there will be a 5 minute short cycling delay
beforetheoutdoorunitwillenergize.
REPLACEMENT PARTS
Replacement parts are available through all Nordyne distributors.
Please have the complete model and serial number of the unit
when ordering replacement parts.
Electrical:
Capacitors Temperature Limit Switches
Compressors Thermostats
Contactors Time Delay Relays
Pressure Switches Transformers
Relays
Motors:
Blower Motor
Fan Motor
Components:
Blower Assembly Fan Grille
Cabinet Panels Filter/Driers
Expansion Valves
10
REFRIGERANT CHARGING TABLES - COOLING MODE ONLY
Application notes on the use of cooling mode charging tables
NOTES:
1. All pressures are listed psig and all temperatures in °F
2. Discharge temperatures GREATER than charted values
indicate an UNDERCHARGED system.
3. Discharge temperatures LESS than charted values
indicate an OVERCHARGED system.
• This equipment’s cooling system contains refrigerant under high pressure. Always use safe and
environmentally sound methods when handling refrigerant handling or servicing the unit. Review the
factory literature and safety warnings prior to servicing.
• Whenrepairingsystemleaks,alwaysuseanitrogen(inert)gastoprotecttherefrigerantsystemandpressure
check the repair before re-charging. Always replace the filter-dryers when performing any repair to the refrigeration
system with one capable of acid removal. After completing the repairs, evacuate the system to 350 - 500 microns
and weigh in the refrigerant to the amount specified on the unit rating label.
• Chargingtablesarevalidforavarietyofindoor,returnairconditionsandaremostinuencedbytheoutdoor
ambient temperature, outdoor fan operation and the unit operating voltage. Before using these charts, make sure
the unit is in a stable operating mode. As shown in Tables 2 - 17 (pages 10 - 15), the ideal system sub-cooling
can vary over the range of operation. Reference the tables to determine the ideal amount of sub-cooling for a
given liquid pressure. Units charged to other values will not perform at the rated unit efficiency (EER) or rated
Coefficient of Performance (COP) in heating mode.
• Toinspectasystemsoperationusingqualityinstruments,matchthemeasuredliquidtemperaturetotheunits
chart. The measured liquid pressure reading should be within 3% of the tables value for most installations.
• Forsystemsthatareoperatingwithmorethana5%deviation,inspecttheunitforthepropervoltageandphase
balance and the refrigeration system for leaks.
• Unitsthatareoperatingatlessthen95%ofthenominalvoltageorwitha2%phaseimbalancemayseeamore
significant deviation than the amount stated above.
• DO NOT use the tables in systems that have a fan cycling under low-ambient control. Refer to the low-ambient
kit instructions for more information. (If applicable)
LEGEND
Shaded boxes indicate flooded conditions.
Rated design values. The suction pressure
will be lower than design value if outdoor air
flow, entering dry bulb, or entering wet bulb
temperatures are lower than design.
Table 2. Air Conditioner & Heat Pump Charging Table (3 Ton Units) - Orifice Matches
AIR CONDITIONER & HEAT PUMP REFRIGERANT CHARGING TABLES
THREE PHASE UNITS
Suc.
Press.
OUTDOOR TEMPERATURE (° F)
70 75 80 85 90 95 100 105
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
124
126 301 139
128
302 151
327 146
130 304 162
329 156
353 150
132
303 184
331 165
356 159
380 157 402 157
134 304 200
332 184
358 170
383 163 406 164
429 162
136 333 198
359 184
385 172 410 172
433 168
455 166
138 361 198
387 185 412 182
437 175
460 172
482 172
140 389 199 414 191
439 184
464 178
487 177
142 416 201 442 194
466 188
491 183
144 444 204 469 197
494 192
146 471 207 496 201
148 499 210
11
Table 4. Air Conditioner & Heat Pump Charging Table (4 Ton Units) - Orifice Matches
Table 5. Air Conditioner & Heat Pump Charging Table (5 Ton Units) - Orifice Matches
Suc.
Press.
OUTDOOR TEMPERATURE (° F)
70 75 80 85 90 95 100 105
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
118
120 295 128
122
296 140
319 134
124 297 151
322 144
345 138
126
297 172
324 154
347 147
370 143 392 143
128 298 189
324 172
349 158
373 149 395 150
417 147
130 325 186
351 171
375 159 399 158
421 153
442 150
132 352 185
377 171 401 168
425 160
447 157
468 155
134 379 186 403 176
427 169
451 163
472 161
136 406 187 430 179
453 172
477 166
138 432 189 456 182
479 176
140 458 191 482 185
142 484 194
Suc.
Press.
OUTDOOR TEMPERATURE (° F)
70 75 80 85 90 95 100 105
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
118
120 315 144
122
316 155
341 146
124 318 167
343 156
366 148
126
317 194
345 166
369 157
391 152 413 149
128 317 211
345 188
370 170
395 158 417 156
438 152
130 346 202
372 184
396 168 420 165
442 158
463 154
132 373 197
398 180 422 175
446 165
467 160
488 158
134 400 195 424 183
448 174
471 167
492 163
136 427 194 451 184
474 175
497 169
138 453 194 477 185
500 177
140 479 194 503 186
142 505 195
12
Table 6. Air Conditioner & Heat Pump Charging Table (2 Ton Units) - Orifice Matches
Table 7. Air Conditioner Charging Table (2.5 Ton Units) - Orifice Matches
Suc.
Press.
OUTDOOR TEMPERATURE (° F)
70 75 80 85 90 95 100 105
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
129
131 276 126
133
278 138
300 131
135 279 149
302 141
323 135
137
279 170
304 151
326 143
346 140 366 139
139 280 187
305 168
328 153
349 146
370 147 389 144
141 306 182
330 167
352 153
373 155
393 150 412 148
143 331 180
354 166
377 162
397 157
416 154 435 153
145 356 180
379 170
401 163
421 160
440 158
147 381 181
403 172
425 165
444 164
149 406 182
428 175
449 169
151 430 184
452 178
153 454 187
155
Suc.
Press.
OUTDOOR TEMPERATURE (° F)
70 75 80 85 90 95 100 105
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
123
125 297 101
127
298 112
321 115
129 300 123
324 125
347 127
131
301 134
326 135
350 136
373 140 395 146
133 302 151
328 145
353 141
376 146
399 153 422 156
135 329 160
355 155
380 150
403 161
426 163 448 166
137 357 168
382 163
407 167
430 169
453 172 475 176
139 384 177
409 175
434 175
457 178
480 182
141 411 186
436 185
461 185
485 187
143 439 195
463 194
488 195
145 466 204
491 203
147 493 212
149
AIR CONDITIONER & HEAT PUMP REFRIGERANT CHARGING TABLES
SINGLE PHASE UNITS
13
Table 9. Air Conditioner & Heat Pump Charging Table (3 Ton Units) - Orifice Matches
Suc.
Press.
OUTDOOR TEMPERATURE (° F)
70 75 80 85 90 95 100 105
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
125
127 294 82
129
295 93
317 101
131 296 105
319 111
342 117
133
299 110
322 121
345 125
368 133 391 141
135 299 127
325 128
349 128
372 139
395 149 418 154
137 326 142
351 142
376 142
399 157
422 161 445 166
139 353 156
378 154
403 162
426 167
449 172 472 178
141 380 169
405 170
430 173
454 178
477 184
143 407 181
432 183
457 186
482 190
145 435 193
460 195
484 198
147 462 205
487 207
149 489 216
151
Suc.
Press.
OUTDOOR TEMPERATURE (° F)
70 75 80 85 90 95 100 105
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
Liq.
Press.
Dis.
Temp.
119
121 303 106
123
304 117
328 119
125 306 128
330 129
354 130
127
307 139
332 139
356 139
380 143 403 148
129 308 156
334 149
360 144
383 149
407 155 430 157
131 336 164
362 158
387 153
410 163
434 164 457 166
133 363 172
389 165
415 169
438 170
461 172 484 175
135 391 180
417 177
442 176
466 178
489 181
137 419 188
444 186
469 185
493 187
139 447 196
472 194
497 194
141 474 204
500 203
143 502 212
145
Table 9. Air Conditioner & Heat Pump Charging Table (4 Ton Units) - Orifice Matches
14
HEATPUMPVERIFICATIONTABLES-HEATINGMODEONLY
• Read all notes and warnings for the Cooling-mode charging tables prior to using these Heating-mode
charge verification tables. Always use safe and environmentally sound methods when handling refrigerant
handling or servicing the unit. Review the factory literature and safety warnings prior to servicing.
• Whenrepairingsystemleaks,alwaysuseanitrogen(inert)gastoprotecttherefrigerantsystemandpressure
check the repair before re-charging. Always replace the filter-dryers when performing any repair to the refrigeration
system with one capable of acid removal. After completing the repairs, evacuate the system to 350 - 500 microns
and weigh in the refrigerant to the amount specified on the unit rating label.
• Before using Tables 18 - 25 (pages 17-19), determine the outdoor ambient temperature and the return air
temperature to the unit. Locate the appropriate location on the units verification table based on those measurements
to determine the ideal liquid line pressure and temperature. Verify the outdoor fan and compressor are running
and the outdoor coil is free from frost accumulation. Also verify the system is not operating in defrost mode before
inspecting the system.
• Always use quality instruments that are in good working order to measure the actual operating point of the
refrigeration system. The liquid line temperature should be within 2 degrees of the ideal value and the pressure
should be within 2%.
• The most reliable way of verifying the system is at the correct charge is to evacuate the system and weigh in the
charge to the amount shown on the rating label. However, if an inspection with these verification tables does not
line up with the values shown and the ambient temperature is above 50˚ F, then a more accurate way to inspect
the system for proper charge is with the cooling mode charging tables. Switch the unit into cooling mode and
allowittooperateandstabilizeforafewminutestheninspecttheunitoperationwiththecoolingmodetablesand
procedures.
Before changing the unit charge, always inspect the following items first:
1. Inspect the liquid line temperature on the inlet and outlet of the filter dryers. If it is the factory dryer and in good
condition there should be no temperature difference. If the temperature difference is larger than 5˚, replace the filter
dryer with one that is bi-directional and has acid removal capability. Refer to the unit RPL for the recommended
partnumberandsize.
2. Inspect the units input voltage. Units operating at less than 95% of the nominal voltage may deviate more from the
chart then previously stated.
3. Inspect the input voltage for a phase imbalance. Units with greater then a 2% disparity will not operate at the rated
performance.
4. Verify that the unit filters are installed and are clean. The pressure drop across the filters should not exceed 0.08
in-W.C.
5. Inspect the indoor coil, indoor blower and blower motor for cleanliness, clogging, and proper operation.
6. Inspect the system for leaks. If any leaks are detected, repair them immediately. Re-inspect the return air and
ambient temperatures and verify that the correct system point on the verification chart was selected.
DO NOT use the tables in systems that have the fan cycling under a low-ambient control. Low-ambient controls are
for cooling operation. In heating mode, the low ambient control should be disabled. Unless the unit is in defrost mode,
the outdoor fan should always operate in conjunction with the compressor.
Application notes on the use of heating-mode charging tables:
NOTES:
1. All pressures are listed psig and all temperatures in °F
2. Discharge temperatures greater than charted values
indicate an undercharged system.
LEGEND
Shaded boxes indicate flooded conditions.
Rated design values. Suction pressure will
vary from design value if outdoor air flow,
entering dry bulb, or entering wet bulb
temperatures vary.
15
Table 20. Heat Pump Charging Table (3 Ton Units) - Orifice Matches
OUTDOOR TEMPERATURE (° F)
0 10 20 30 40 50 60
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
27 251 151 41 269 154 55 287 157 69 305 160 83 309 166 96 323 175 109 337 184
28 258 149 42 275 152 56 292 155 70 308 158 84 316 163 97 330 170 110 344 178
29 265 147 43 281 150 57 297 153 71 312 156 85 323 160 98 337 166 111 351 172
30 272 145 44 287 148 58 301 151 72 316 154 86 330 157 99 344 161 112 358 165
31 279 143 45 293 146 59 306 149 73 319 152 87 337 154 100 351 157 113 365 159
32 286 141 46 299 144 60 311 147 74 323 150 88 344 151 101 358 152 114 372 153
33 293 139 47 305 142 61 316 145 75 327 148 89 351 149 102 365 148 115 379 147
Table 18. Heat Pump Charging Table (4 Ton Units) - Orifice Matches
OUTDOOR TEMPERATURE (° F)
0 10 20 30 40 50 60
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
24 254 160 38 274 161 52 294 161 66 314 162 78 323 167 88 345 177 98 366 187
25 261 158 39 280 159 53 298 159 67 317 160 79 330 164 89 352 172 99 373 181
26 268 156 40 285 157 54 303 157 68 321 158 80 337 161 90 359 168 100 380 175
27 275 154 41 291 155 55 308 155 69 325 156 81 344 159 91 366 164 101 387 169
28 282 152 42 297 153 56 313 153 70 328 154 82 351 156 92 373 159 102 394 162
29 289 150 43 303 151 57 318 151 71 332 152 83 358 153 93 380 155 103 401 156
30 296 148 44 309 149 58 322 149 72 336 150 84 365 150 94 387 150 104 408 150
Table 19. Heat Pump Charging Table (5 Ton Units) - Orifice Matches
OUTDOOR TEMPERATURE (° F)
0 10 20 30 40 50
60
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
25 260 162 37 279 163 49 298 164 60 318 165 72 323 169 84 336 176 95 349 183
26 267 160 38 285 161 50 303 162 61 322 163 73 330 166 85 343 171 96 356 176
27 274 158 39 291 159 51 308 160 62 325 161 74 337 164 86 350 167 97 363 170
28 281 156 40 297 157 52 313 158 63 329 159 75 344 161 87 357 163 98 370 164
29 288 154 41 303 155 53 318 156 64 333 157 76 351 158 88 364 158 99 377 158
30 295 152 42 309 153 54 322 154 65 336 155 77 358 155 89 371 154 100 384 152
31 302 150 43 314 151 55 327 152 66 340 153 78 365 152 90 378 149 101 391 146
HEAT PUMP REFRIGERANT CHARGING TABLES - THREE PHASE UNITS
16
Table 21. Heat Pump Charging Table (2 Ton Units) - Orifice Matches
OUTDOOR TEMPERATURE (° F)
0 10 20 30 40 50 60
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
33 239 146 47 264 155 61 288 165 75 312 174 88 322 183 101 341 190 113 359 198
34 246 144 48 269 153 62 293 163 76 316 172 89 329 180 102 348 186 114 366 192
35 253 142 49 275 151 63 298 161 77 320 170 90 336 177 103 355 181 115 373 185
36 260 140 50 281 149 64 302 159 78 323 168 91 343 174 104 362 177 116 380 179
37 267 138 51 287 147 65 307 157 79 327 166 92 350 171 105 369 172 117 387 173
38 274 136 52 293 145 66 312 155 80 331 164 93 357 169 106 376 168 118 394 167
39 281 134 53 299 143 67 317 153 81 334 162 94 364 166 107 383 163 119 401 161
Table 23. Heat Pump Charging Table (2.5 Ton Units) - Orifice Matches
030K OUTDOOR TEMPERATURE (° F)
0 10 20 30 40 50 60
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
33 218 182 47 252 185 60 286 188 73 320 191 87 334 195 101 353 202 115 371 209
34 225 180 48 258 183 61 291 186 74 323 189 88 341 192 102 360 197 116 378 202
35 232 178 49 264 181 62 295 184 75 327 187 89 348 190 103 367 193 117 385 196
36 239 176 50 270 179 63 300 182 76 331 185 90 355 187 104 374 189 118 392 190
37 246 174 51 276 177 64 305 180 77 334 183 91 362 184 105 381 184 119 399 184
38 253 172 52 281 175 65 310 178 78 338 181 92 369 181 106 388 180 120 406 178
39 260 170 53 287 173 66 315 176 79 342 179 93 376 178 107 395 175 121 413 172
17
Table 24. Heat Pump Charging Table (3 Ton Units) - Orifice Matches
OUTDOOR TEMPERATURE (° F)
0 10 20 30 40 50 60
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
30 225 174 44 254 175 57 283 175 70 313 176 84 329 179 97 354 185 110 379 191
31 232 172 45 260 173 58 288 173 71 317 174 85 336 176 98 361 180 111 386 184
32 239 170 46 266 171 59 293 171 72 320 172 86 343 173 99 368 176 112 393 178
33 246 168 47 272 169 60 298 169 73 324 170 87 350 170 100 375 171 113 400 172
34 253 166 48 278 167 61 303 167 74 328 168 88 357 168 101 382 167 114 407 166
35 260 164 49 284 165 62 307 165 75 331 166 89 364 165 102 389 162 115 414 160
36 267 162 50 289 163 63 312 163 76 335 164 90 371 162 103 396 158 116 421 154
Table 25. Heat Pump Charging Table (4 Ton Units) - Orifice Matches
OUTDOOR TEMPERATURE (° F)
0 10 20 30 40 50 60
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
Suc.
Press.
Liq.
Press.
Dis.
Temp.
32 258 173 43 282 178 54 306 184 65 330 189 78 345 195 92 375 201 106 405 207
33 265 171 44 288 176 55 311 182 66 333 187 79 352 192 93 382 196 107 412 200
34 272 169 45 294 174 56 315 180 67 337 185 80 359 189 94 389 192 108 419 194
35 279 167 46 300 172 57 320 178 68 341 183 81 366 186 95 396 187 109 426 188
36 286 165 47 306 170 58 325 176 69 344 181 82 373 184 96 403 183 110 433 182
37 293 163 48 311 168 59 330 174 70 348 179 83 380 181 97 410 178 111 440 176
38 300 161 49 317 166 60 335 172 71 352 177 84 387 178 98 417 174 112 447 170
18
ELECTRICAL DIAGRAMS
Figure 2. Wiring Diagram for Single Phase Air Conditioners
Single Phase
1. Couper le courant avant de faire letretien.
2. Employez uniquement des conducteurs en cuivre.
3. Ne convient pas aux installations de plus de 150 volt a la terre.
710388B
(Replaces 710388A)
0109
WIRING DIAGRAM
Split System Air Conditioner (Outdoor Section)
NOTES:
1. Disconnect all power before servicing.
2. For supply connections use copper conductors only.
3. Not suitable on systems that exceed 150 volts to ground.
4. For replacement wires use conductors suitable for 105 deg C.
5. For ampacities and overcurrent protection, see unit rating plate.
6. Connect to 24 vac/40ca/class 2 circuit. See furnace/airhandler installation
instructions for control circuit and optional relay/transformer kits.
7. Anti-Short Cycle Timer (ASCT) may or may not be installed in the unit. If desired,
ASCT is factory installed on select models only or may be field installed as shown using
manufacturer’s approved kit. If not present, connect Yellow and Black wires per Note 6.
FIELD WIRING
LEGEND:
LOW VOLTAGE
HIGH VOLTAGE
¢710388B¤
CC - Contactor Coil
CCH - Crankcase Heater
HPS - High Pressure Switch
208/230V
CC
ASCT
ASCT
(SEE NOTE 7)
H
C
F
CCH
(OPTIONAL)
R
C
S
S
C
R
L2
T2
COMPRESSOR
CONTACTS
L1
T1
COMPRESSOR
OUTDOOR FAN
MOTOR
24 VOLT FIELD
CONNECTIONS
HPS
HPS
T2
T1
T3
ASCT
(SEE
NOTE 7)
GROUNDING
SCREW
L1 L2
GND
T1
T2
L1
L2
OUTDOOR
FAN MOTOR
C
S
DUAL
CAPACITOR
R
3
1
2
START
CAPAC
START
RELAY
BLACK
BLUE
ORANGE
YELLOW
CONTACTOR
YELLOW
BLACK
RED
CRANKCASE
HEATER
(OPTIONAL)
YELLOW
BLACK
SEE NOTE 6
RED OR
YELLOW
BLACK
RED OR
RED BLACK
BLACK OR
BLK WHT
C
S
R
YELLOW
OR
YELLOW
BLACK
RED OR
RED BLACK
H
C
F
19
Figure 3. Wiring Diagram for Three Phase Air Conditioners
1. Coupere le courant avant de faire letretien.
2. Employez uniquement des conducteurs en culvre.
7108640
(Replaces 703766B)
1208
FIELD WIRING
LEGEND:
LOW VOLTAGE
HIGH VOLTAGE
WIRING DIAGRAM
Split System Air Conditioner (Outdoor Section) 380 / 420V Three Phase - 50/60 Hz
NOTES:
1. Disconnect all power before servicing.
2. For supply connections use copper conductors only.
3. For replacement wires use conductors suitable for 105 C.
4. For supply wire ampacities and overcurrent protection, see unit rating plate.
5. Connect to 24 vac/40va/class 2 circuit. See furnace/air handler installation instructions for control circuit and
optional relay/transformer kits.
¢7108644¤
CC
S
C
R
L1
L2
L3
N
HPS
Outdoor
Fan
Motor
24 VOLT FIELD
CONNECTIONS
Compressor
Compressor
Contacts
T3
T2
T1
Capacitor
CC - CONTACTOR COIL
HPS - HIGH PRESSURE SWITCH
T1
T2
L1
L2
T3
L3
GND
T3
T1
T2
C
S
R
L1
L2
L3
N
COMPRESSOR
OUTDOOR FAN
MOTOR
TERMINAL BLOCK
(380/420V UNITS ONLY )
CONTACTOR
HIGH PRESSURE
SWITCH
GROUNDING LUG
THREE PHASE FIELD SUPPLY
BLUE
CAPACITOR
BLACK
RED
YELLOW
SEE NOTE 5
ORANGE
BLACK
Y/BLACK
Y/BLACK
BLACK
YELLOW
20
Figure 4. Wiring Diagram for Single Phase Heat Pumps
Outdoor
Fan Motor
R
C
CC
C
H
F
Dual
Capacitor
(Single Phase)
Field Supply
L1
Grd
L2
Grounding
Screw
C
S
T1 T2
L1 L2
HPS
Contactor
R
Start
Capacitor
Start Relay
5
2
htiw wolleY
hsaH kcalB
Comp
Low
Voltage
Terminals
See
Note 6
Defrost
Thermostat
TERMINAL OR GRAY WIRE
ODT(Select
Models Only)
T2
DFT
TEST
T1
T2
C
Y
O
W2
R
DFT
E
C
Y
O
W2
R
E
DF1 DF2
BlackBlack
Reversing Valve
Solenoid
S
CC
Defrost Control Board
1
CCH
Black
Red or Red Black
Yellow or Yellow Black
Black
Black or
Black White
Orange
Red
Red
Yellow
Black
Blue
Yellow
Black
Black
Black
Blue
Black
Yellow
esahP elgniS)noitceS roodtuO( pmuP taeH metsyS tilpS
WIRING DIAGRAM
NOTES:
1. Disconnect all power before servicing.
2. For supply connections use copper conductors only.
3. Not suitable on systems that exceed 150 volts to ground
4. For replacement wires use conductors suitable for 105˚ C.
5. For ampacities and overcurrent protection, see unit rating plate.
6. Connect to 24 vac/40va/class 2 circuit. See furnace/air handler
installation instructions for control circuit and optional
relay/transformer kits.
Defrost Board Operation:
Closing during defrost.Rating: 1 Amp.Max.
Opens during defrost.Rating: 2HP at 230 Vac Max.
With DFT closed and “Y” closed, compressor run
time is accumulated. Opening of DFT during
defrost or interval period resets the interval to 0.
CC - Contactor Coil
CCH - Crankcase Heater
DFT - Defrost Thermostat
HPS - High Pressure Switch
RVS - Reversing Valve Solenoid
* - Hard Start Kit Field Installed
ODT - Outdoor Thermostat
1. Couper le courant avant de faire letretien.
2. Employez uniquement des conducteurs en cuivre.
3. Ne convient pas aux installations de plus de 150 volt a la terre.
710507-D
(Replaces 710507-C)
05/11
FIELD WIRING
LEGEND:
LOW VOLTAGE
HIGH VOLTAGE
Dual Capacitor
H
C
F
CCH
Compressor
Contacts
Compressor
Outdoor Fan Motor
R
C
S
L1
T1
L2
T2
E
Defrost Control Board
DFT
ODT (Select
Models Only)
Control
Logic
DF1
DF2
DFT
1
2
3
1
2
3
4
4
1
R
W2
O
Y
C
T2
T1
R
W2
O
Y
C
RVS
HPS
208/230V
CC
R
C
S
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Intertherm S(T)4BX Installation guide

Intertherm
Brand
Intertherm
Model
S(T)4BX
Category
Heat pumps
Type
Installation guide
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