Intertherm HSA4ME5 Installation Instruction

SPLIT SYSTEM AIR CONDITIONER
14.3 SEER2
INSTALLATION INSTRUCTIONS
*SA4ME5M - SN24K, SN30K, SN36K, SN42K, SN48K & SN60K
(2, 2.5, 3, 3.5, 4,& 5 TON) SERIES - SINGLE PHASE MODELS
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 unit 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.
DO NOT DESTROY. PLEASE READ CAREFULLY &
KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.
IMPORTANT SAFETY INFORMATION................... 2
GENERAL REQUIREMENTS.................................. 3
Detecting Leaks of Flammable Refrigerants........... 4
Removing Refrigerant and Evacuation................... 4
AIR CONDITIONER INSTALLATION...................... 4
General Information................................................ 4
Before You Install this Unit...................................... 4
Packaging Removal................................................ 4
Locating the Air Conditioner.................................... 4
Clearance Requirements........................................ 5
Ground Installations................................................ 5
Roof Installation...................................................... 5
Accessory Mounting Kits......................................... 5
Connecting Refrigerant Tubing Between the
Indoor & Outdoor Unit............................................. 5
ELECTRICAL WIRING............................................ 6
Pre-Electrical Checklist........................................... 6
Line Voltage............................................................ 6
Grounding............................................................... 6
Thermostat Connections......................................... 7
Low Voltage Connections....................................... 7
START UP & ADJUSTMENTS................................ 7
Pre-Start Check List................................................ 7
Start-Up Procedures............................................... 7
Air Circulation - Indoor Blower.............................. 7
Indoor Unit Leak Detection................................... 7
System Cooling..................................................... 7
System Heating (optional).................................... 7
AIR CONDITIONER MAINTENANCE...................... 7
Panel Removal........................................................ 8
Panel Installation..................................................... 8
REFRIGERANT CHARGING................................... 8
Charging the Unit in AC mode................................ 9
If the outdoor temperature is 65 degrees F or
higher:................................................................... 9
If the outdoor temperature is below 65
degrees F:............................................................. 9
ELECTRICAL INFORMATION................................ 10
Figure 4. Wiring Diagram for *SA4ME5M1SN
(2, 2.5, 3, 3.5, 4 & 5 Ton Units)............................. 10
REFRIGERANT RECOVERY.................................. 11
DECOMMISSIONING............................................... 11
INSTALLATION CHECKLIST.................................. 12
REPLACEMENT PARTS......................................... 12
IMPORTANT
For installation only in HUD manufactured home per Construction Safety 24 CFR part 3280.
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.
WARNING indicates 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.
WARNING:
*SA4ME5M split system air conditioners are
shipped charged with R-454B refrigerant and
ready for installation. If maintenance, service,
or repairs make it necessary for evacuation and
charging, opening of sealed components, or
opening of ventilated enclosures, then it should
only be attempted by qualified trained personnel
thoroughly familiar with this equipment and have
the appropriate training for working with A2L
refrigerants. 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.
WARNING:
WARNING:
This appliance is not intended for use by
persons (including children) with reduced
physical, sensory or mental capabilities, or lack
of experience and knowledge, unless they have
been given supervision or instruction concerning
use of the appliance by a person responsible for
their safety.
Children should be supervised to ensure that
they do not play with the appliance.
WARNING:
Shut off all electrical power to the unit before
performing any maintenance or service on the
system. Failure to comply may result in personal
injury or death.
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
2
The information listed in this manual must be
followed during the installation, service, and
operation of this unit. Unqualified individuals
should not attempt to interpret these instructions
or install this equipment. Failure to follow safety
recommendations could result in possible
damage to the equipment, serious personal
injury or death.
CAUTION:
This unit uses refrigerant R-454B. DO NOT use
any other refrigerant in this unit. Use of another
refrigerant will damage the unit. Ensure that any
indoor section (coil or air handler) is suitable for
use with R-454B. DO NOT mix refrigerants.
WARNING:
D o not us e m e ans to acc el e r ate t h e
defrosting process or to clean, other than
those recommended by the manufacturer.
The appliance shall be stored in a room without
continuously operating ignition sources (for
example: open flames, an operating gas appliance
or an operating electric heater.)
Do not pierce or burn.
Be aware that refrigerants may not contain an
odor.
GENERAL REQUIREMENTS
• 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) for special installation requirements.
• This unit is a PARTIAL UNIT AIR CONDITIONER,
complying with PARTIAL UNIT requirements of UL 603352-40, and must only be connected to other units that have
been confirmed as complying to corresponding PARTIAL
UNIT requirements of UL 60335-2-40, CSA 22.2 No 603352 40, or UL 1995.CSA 22.2 No 236
• This system contains R-454B, a mildly-flammable
refrigerant. Because of this, there are requirements,
including a minimum size, for the room in which the indoor
portion of this system shall be installed within. Consult the
indoor unit’s installation instructions and labels for more
information.
• Prior to beginning work on this system, take steps to
minimize the risk of refrigerant being ignited. These steps
should include the following:
o Work shall be undertaken under a controlled procedure
so as to minimize the risk of a flammable gas or vapor
being present while the work is being performed.
o All maintenance staff and others working in the local area
shall be instructed on the nature of work being carried
out. Work in confined spaces shall be avoided.
o The area shall be checked with an appropriate refrigerant
detector prior to and during work, to ensure the technician
is aware of potentially toxic or flammable atmospheres.
Ensure that the leak detection equipment being used
is suitable for use with all applicable refrigerants, i.e.
non-sparking, adequately sealed or intrinsically safe.
o If any hot work is to be conducted on the refrigerating
equipment or any associated parts, appropriate fire
extinguishing equipment shall be available to hand.
Have a dry powder or CO2 fire extinguisher adjacent
to the charging area.
o No person carrying out work in relation to a refrigerating
system which involves exposing any pipe work shall use
any sources of ignition in such a manner that it may lead
to the risk of fire or explosion. All possible ignition sources,
including cigarette smoking, should be kept sufficiently
far away from the site of installation, repairing, removing
and disposal, during which refrigerant can possibly be
released to the surrounding space. Prior to work taking
place, the area around the equipment is to be surveyed
to make sure that there are no flammable hazards or
ignition risks. “No Smoking” signs shall be displayed.
o Ensure that the area is in the open or that it is adequately
ventilated before breaking into the system or conducting
any hot work. A degree of ventilation shall continue during
the period that the work is carried out. The ventilation
should safely disperse any released refrigerant and
preferably expel it externally into the atmosphere.
o Where electrical components are being changed, they
shall be fit for the purpose and to the correct specification.
At all times the manufacturer’s maintenance and service
guidelines shall be followed. If in doubt, consult the
manufacturer’s technical department for assistance.
o The following checks shall be applied to installations
using FLAMMABLE REFRIGERANTS:
• the actual refrigerant charge is in accordance with
the room size within which the refrigerant containing
parts are installed
• the ventilation machinery and outlets are operating
adequately and are not obstructed
• marking to the equipment continues to be visible and
legible. Markings and signs that are illegible shall be
corrected
• refrigerating pipe or components are installed in a
position where they are unlikely to be exposed to any
substance which may corrode refrigerant containing
components, unless the components are constructed
of materials which are inherently resistant to being
corroded or are suitably protected against being so
corroded.
• Repair and maintenance to electrical components shall
include initial safety checks and component inspection
procedures. If a fault exists that could compromise safety,
then no electrical supply shall be connected to the circuit
until it is satisfactorily dealt with. If the fault cannot be
corrected immediately but it is necessary to continue
operation, an adequate temporary solution shall be used.
This shall be reported to the owner of the equipment so
all parties are advised.
o Initial safety checks shall include:
• that capacitors are discharged: this shall be done in a
safe manner to avoid possibility of sparking;
• that no live electrical components and wiring are
exposed while charging, recovering or purging the
system;
• that there is continuity of earth bonding
• Sealed components and intrinsically safe components
shall be replaced instead of trying to repair them.
Check that cabling will not be subject to wear, corrosion,
excessive pressure, vibration, sharp edges or any other
adverse environmental effects. The check shall also take
into account the effects of aging or continual vibration from
sources such as compressors or fans.
• 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.
• 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.
• Fully annealed, refrigerant grade copper tubing should be
used when installing the system. Refrigerant suction line
tubing should be fully insulated.
• Pipe-work including piping material, pipe routing, and
installation shall include protection from physical damage in
operation and service, and be in compliance with national
and local codes and standards, such as ASHRAE 15,
ASHRAE 15.2, IAPMO Uniform Mechanical Code, ICC
International Mechanical Code, or CSA B52. All field joints
shall be accessible for inspection prior to being covered
or enclosed.
• 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.
3
• 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.
• When refrigerant tubing and electrical wiring penetrates
a structure's envelope, the openings should be made to
be suitably water-tight after their installation.
• This unit is designed for outdoor installations only and
should be positioned as shown on page 5.
Detecting Leaks of Flammable Refrigerants
• Under no circumstances shall potential sources of ignition
be used in the searching for or detection of refrigerant
leaks. A halide torch (or any other detector using a naked
flame) shall not be used.
• The following leak detection methods are deemed
acceptable for all refrigerant systems
o Electronic leak detectors may be used to detect refrigerant
leaks but, in the case of FLAMMABLE REFRIGERANTS,
the sensitivity may not be adequate, or may need recalibration. (Detection equipment shall be calibrated
in a refrigerant-free area.) Ensure that the detector is
not a potential source of ignition and is suitable for the
refrigerant used. Leak detection equipment shall be
set at a percentage of the LFL of the refrigerant and
shall be calibrated to the refrigerant employed, and
the appropriate percentage of gas (25 % maximum) is
confirmed.
o Leak detection fluids are also suitable for use with most
refrigerants but the use of detergents containing chlorine
shall be avoided as the chlorine may react with the
refrigerant and corrode the copper pipe-work.
o NOTE Examples of leak detection fluids are:
• bubble method,
• fluorescent method agents.
• If a leak is suspected, all naked flames shall be removed/
extinguished.
• If a leakage of refrigerant is found which requires brazing,
all of the refrigerant shall be recovered from the system,
or isolated (by means of shut off valves) in a part of the
system remote from the leak. Removal of refrigerant shall
be according to the “Removing Refrigerant and Evacuation”
section of this document.
Removing Refrigerant and Evacuation
• When breaking into the refrigerant circuit to make repairs
– or for any other purpose --conventional procedures shall
be used. However, for flammable refrigerants it is important
that best practice be followed, since flammability is a
consideration. The following procedure shall be adhered
to:
o Safely remove refrigerant following local and national
regulations
o Evacuate the system
o Purge the circuit with inert gas
o Evacuate the system
o Continuously flush or purge with inert gas when using
flame to open circuit
o Open the circuit
4
AIR CONDITIONER INSTALLATION
General Information
The *SA4ME5M series air conditioner is designed only
for outdoor rooftop or ground level installations. This unit
has been tested for capacity and efficiency in accordance
with AHRI Standards and will provide many years of safe
and dependable comfort, providing it is 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 this unit. The ability to properly perform
maintenance on this equipment requires certain mechanical
skills and tools.
Before You Install this 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.
√ Check that the marked maximum operating pressure on
the indoor coil or air handler and the maximum operating
pressure on the outdoor unit are suitable for each other.
√ Check that the indoor coil or air handler and the outdoor
unit are both suitable for the same refrigerant.
√ 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. 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.
Packaging Removal
NOTE: To prevent damage to the tubing connections, carefully
remove the carton and user’s manual from the equipment.
Discard the shipping carton.
Locating the Air Conditioner
• Survey the job site to determine the best location for
mounting the outdoor unit.
• Sufficient clearance for unobstructed airflow through the
outdoor coil must be maintained in order to achieve rated
performance. See Figure 1 for minimum clearances to
obstructions.
• Overhead obstructions (Figure 1), poorly ventilated areas,
and areas subject to accumulation of debris should be
avoided.
• The unit should not be placed under roofing or other
overhangs which are not guttered; that would allow water
or ice to fall into the unit's discharge opening.
• Consideration should be given to availability of electric
power, service access, noise, and shade.
The unit may only be installed on a structure that is capable
of supporting the total weight of the unit and its anchorage.
The support for the base of the unit may not slope more than
1/8 inch per foot. The minimum clearance for the base of the
unit to the roof-line is 2 inches* for residential applications.
WALL
12” (30 cm)
50%
FENCE
Note on ground and roof clearances: Heat pump and other
applications should account for the accumulation of snow and raise the
base of the unit accordingly. (At a minimum, a 6 inch clearance is required.)
6” (15 cm)
12" (30 cm)
WALL
Accessory Mounting Kits
Kits for other mounting methods and accessories can be
found in the technical sales literature for the unit. Or the
literature library on Nordyne.com.
24" (61 cm)
WALL
Place unit away from
rain runoff that may fall
directly onto unit
Minimum 48” (122 cm)
to structure
Minimum 12” (30 cm)
to bushes
or fence
Connecting Refrigerant Tubing Between the Indoor
& Outdoor Unit
CAUTION:
When connecting refrigerant line-sets together,
it is highly recommended that dry nitrogen be
flowing through the joints during brazing to
prevent internal oxidation and scaling. Copper
oxides, internal to the system can damage the
compressors bearings and seals, block small
orifices and microchannels or otherwise damage
components.
CAUTION:
2” (5.1 cm) Mounting Pad
Figure 1. Clearance Requirements
Clearance Requirements
• The general recommendation is for the units to be installed
with 18 inches of clearance on 3 sides and with 24 inches
of clearance for the service access side to the unit’s service
panel.
• For installations that are space constrained, one side of the
unit, adjacent to the service panel, may have its air side
clearance reduced to a minimum of 6 inches. The other
side adjacent to the service panel requires 24 inches for
service access. The remaining two sides, at a minimum
shall require 12 inches of clearance. However, for those
two remaining sides that require at least 12 inches of
clearance, only one of them may be adjacent to a solid
wall and the other may not be any more restrictive than a
4 ft tall, 50% open fence.
• A minimum of 18 inches between two units must be
maintained for proper performance.
Ground Installations
The unit should be installed on a solid base, that is level and
located at least 2 inches above grade*.
Note: It is recommended that poured concrete mounting bases are not
attached or adjacent to the building structure or foundation.
Roof Installation
When performing brazing operations always
protect the system components and seals from
the possibility of heat damage. Remove all
caps, plugs and Schrader valve cores on piping
system components just prior to assembly and
brazing. Use good brazing practices to protect
components from the heat and flame of the
brazing torch.
After outdoor and indoor unit placement has been determined,
route refrigerant tubing between the equipment in accordance
with sound installation practices.
• Refrigerant tubing should be routed in a manner that
minimizes the length of tubing and the number of bends
in the tubing. 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.
• 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 lengths is 75 ft. and the vertical elevation difference
5
between the indoor and outdoor sections should not exceed
20 ft.
• A filter 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.
• After the completion of all brazing operations and when
the components have been properly cooled, replace all the
seals, Shrader cores and caps which had been previously
removed. It is recommended that all seals be lubricated
with a light coat of refrigerant oil. Always verify that oil
applied matches the oil type listed on the compressor
nameplate. A thread sealant which is compatible with
the system refrigerant and oil can be sparingly applied if
desired. applied per the manufacturer’s instructions.
CAUTION:
If repairs are necessary to the refrigerant lineset or indoor setup after the initial installation,
then when servicing, cover or seal openings to
minimize the exposure of the refrigerant system
to air to prevent accumulation of moisture and
other contaminants.
ELECTRICAL WIRING
WARNING:
Electrical Shock Or Fire Hazard
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 voltage wiring.
√ If replacing an existing unit, verify that the: current wiring,
unit disconnect and circuit breaker is properly sized and
6
rated for the new units requirements. Verify that information
with the MCA and MOP values on the unit nameplate.
√ Verify factory wiring is in accordance with the unit wiring
diagram. See Figure 4, (page 10). Inspect for loose
connections.
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.
• 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 electrical connections for its
incoming line voltage wiring, its safety ground wiring,
and the low voltage control circuit wiring. Refer to
the wiring diagram / schematic for identification and
location of outdoor unit field wiring interfaces. See
Figure 4, (page 10). 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 (MCA)
and maximum overcurrent protection (MOP) 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 unit in strict accordance of the NEC (ANSI/NFPA 70),
applicable local codes, and the instructions provided with
the equipment. 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.
• 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.
• A whip/conduit spacer has been provided that must be
installed as a reinforcement where the whip/conduit enters
the unit. Break this spacer in half to use the appropriate size.
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.
the fan mode should be set to AUTO. Close all electrical
disconnects to energize the system.
Thermostat Connections
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.
• 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.
Low Voltage Connections
• The outdoor unit is designed to operate from a 24 VAC
Class II control circuit which is provided by the indoor unit.
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
outdoor unit's low voltage terminal block and as indicated
on the units wiring diagram.
START UP & ADJUSTMENTS
Pre-Start Check List
√ Verify that the outdoor unit is installed according to all
instructions in this document.
√ Verify that the indoor unit is appropriate for use with the
refrigerant listed on the outdoor unit and that it has the
proper design pressure for the outdoor unit.
√ Verify that the indoor unit is appropriate for use with the
refrigerant listed on the outdoor unit. And that it has the
proper design pressure for the outdoor unit equipment
type.
√ Verify the indoor unit and thermostat have been installed
in accordance with that equipment’s instructions.
√ Verify line voltage power leads are securely connected and
that both indoor and outdoor units are properly grounded.
√ Verify that the power supplied by branch circuits for both
the indoor and outdoor equipment is:
• the proper voltage for the equipment, and
• that the overcurrent protection device is properly
sized, and
• that the supply wiring is the correct gauge.
√ Verify that the low voltage and thermostat wiring are securely
connected to the proper terminals for all equipment.
√ Verify that the low voltage transformer has been properly
connected with that unit’s instructions.
√ Verify that the refrigerant line-set has been properly routed
between the units, connected appropriately, is properly
secured and protected from damage, and that it has the
correct piping insulation installed.
√ Verify that the refrigerant system and lines are leak free by
inspection with a leak detector or the soap-bubble method.
√ Verify that any attached indoor ducting has been properly
installed and sealed.
√ Verify that the indoor condensate drain line and trap are
properly installed and functioning.
√ Verify that all removable panels have been re-installed,
and all cabinet enclosures and fan guards are secure.
√ Verify that the air filters are clean and properly installed.
√ Verify that the thermostat is set to the stand-by, or off
setting. And the fan switch is set to automatic or off.
Start-Up Procedures
The thermostat's function mode should be set to OFF and
Air Circulation - Indoor Blower
Indoor Unit Leak Detection
1. Ensure that the indoor unit’s leak detection and mitigation
components are working properly. Refer to the indoor unit’s
installation instructions for more information.
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.
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 mode is
set to the ON position.
System Heating (optional)
1. Set the thermostat's system mode to HEAT and the
temperature mode above room temperature.
2. Verify the optional heating equipment (furnace or electric
heat) 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.
AIR CONDITIONER 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 air conditioner. 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 filters at the beginning of
each heating and cooling season, or more frequently if
required.
• Inspect the condensate drains in the unit's basepan and
the outdoor coil at the beginning of each cooling season.
7
Remove any debris. Clean the outdoor coil and louvers
as necessary using a mild detergent and water. Rinse
thoroughly with water.
• To access the outdoor coil on units equipped with louvered
panels, refer to Figure 2, (page 8) for panel removal
and Figure 3, (page 8) for panel installation.
• Inspect the electrical connections for tightness at the
beginning of each heating and cooling season. Service
as necessary.
• Do not attempt to add additional oil or grease to motors
unequipped with oil tubes or grease fittings. Most outdoor
unit motors are manufactured with sealed, permanently
lubricated bearings that are designed for the life of the
equipment without maintenance.
• The compressor is hermetically sealed and shipped from
the factory with the proper oil charge for most installations.
Lubricating oil should only be added by trained personnel
and is typically only required for long line-sets or tall riser
applications.
Figure 2. Panel Removal
Panel Removal
DETAIL A
1. Remove screws securing the panel.
2. Slide the panel up towards the top pan in order to clear
the bottom flange from the base pan. See Figure 2.
3. Swing the bottom of the panel out and pull the panel down
to remove it from the unit.
Panel Installation
1. Insert the top corners of side panel flanges into the corner
post channels as shown in Detail A in Figure 3.
2. Slide the panel up into the top pan. (You may need to push
on the center of the panel at the top in order to clear the
top pan edge).
3. Swing the panel in and push down until the panel is resting
on the top edge of the base pan wall as shown in Detail
B.
4. Insert screws into the panel to secure it to the unit.
DETAIL B
REFRIGERANT CHARGING
WARNING:
*SA4ME5M Split System Air Conditioners are
shipped charged with R-454B refrigerant and
ready for installation. If repairs make it necessary
for evacuation and charging, it should only
be attempted by qualified trained personnel
thoroughly familiar with this equipment. 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, but
BEFORE the unit’s base valves are opened, it is required
that you pressure test with an inert gas, leak check, and
evacuate the indoor section and all line connections (using
proper methods) before finalizing the full system refrigerant
charge.
CAUTION:
8
Figure 3. Panel Installation
The outdoor unit shall be isolated during pressure
testing. If at any time the outdoor unit does need
to be pressure tested then the pressure must
never exceed 450 psig or the compressor may
be damaged and the warranty voided.
• When pressure testing the indoor unit and lineset the
minimum pressure to be used shall be the maximum
allowable pressure on the indoor unit’s rating label.
• The refrigerant joints between the lineset and indoor unit,
and any other field-made refrigerant joints inside the home
or building shall be tightness tested. The test method shall
have a sensitivity of 5 grams per year of refrigerant or
better under a pressure of at least 200 psig. No leak shall
be detected.
• Along with typical charging best practices, the following
additional requirements shall be followed due to the mildly
flammable refrigerant used in this system
• Ensure that contamination of different refrigerants does
not occur when using charging equipment. Hoses or lines
shall be as short as possible to minimize the amount of
refrigerant contained in them.
• Cylinders shall be kept in an appropriate position
according to the instructions.
• Ensure that the refrigerating system is earthed prior to
charging the system with refrigerant
• Label the system when charging is complete (if not
already).
• Extreme care shall be taken not to overfill the refrigerating
system.
• Prior to recharging the system, it shall be pressure-tested
with the appropriate purging gas. The system shall be leaktested on completion of charging but prior to commissioning.
A follow up leak test shall be carried out prior to leaving
the site.
• Refer to the Quick Reference Data sheet for additional
charging information for this unit with the approved Nordyne
indoor units. For reference, these units are listed in the
AHRI Directory with all approved combinations of indoor
coils and units. Installing these outdoor units on systems
that combine it with an indoor coil or unit not listed there, is
not recommended. When approved combinations of indoor
and outdoor units are installed, they should be set up to
operate within the airflow and other operational parameters
prescribed in all of the units provided instructions and
technical specifications.
• Installation of this outdoor unit with other, non-listed
indoor unit combinations may require different airflows,
expansion devices, charge values and system setup from
the instructions provided here and with this unit. Nordyne
does not recommend the use of this product in unlisted
combinations, and the system performance and efficiency
values of unlisted unit combinations may be different than
the listed product combinations.
• The refrigerant charge can be checked and adjusted through
the service ports provided external to the outdoor unit.
Use only gauge sets with hoses which have a “Schrader”
depression device present to actuate the valve.
• An automatic high-pressure switch is factory-installed
installed in these units and is located on the discharge
line after the unit's compressor. This switch is designed to
protect the system when very high pressures occur during
abnormal conditions. Under normal conditions, the switch
is closed. If the system pressure rises to 650 psig, then
the switch will open and de-energize the contactor coil
in the outdoor unit. The switch will close again once the
liquid pressure decreases to 460 psig and allow the unit
to restart.
• NOTE: After completing the charging of the system the
final system charge shall be recorded in the appropriate
location on the outdoor unit’s rating plate.
Data sheet).
3. Weigh in the additional charge amounts determined by
step 1 and 2 above.
4. Adjust the charge to match the superheat (for fixed orifice
systems) or subcooling (for TXV systems). The charging
tables are on the inside of the outdoor unit’s electrical
box cover panel. These tables provide superheat targets
for fixed orifice systems and subcooling targets for TXV
systems. The system should be charged so that the
measured superheat/ subcooling are within 1 degree F
of the target listed in the table.
For fixed orifice systems:
• If your measured superheat at the suction valve is
LESS THAN the recommended superheat value
in the table then REMOVE refrigerant.
• If your measured superheat at the suction valve
is GREATER THAN the recommended superheat
value in the table then ADD refrigerant.
For TXV systems:
• If your measured subcooling at the liquid valve is
LESS THAN the recommended subcooling value
in the table then ADD refrigerant.
• If your measured subcooling at the liquid valve is
GREATER THAN the recommended subcooling
value in the table then REMOVE refrigerant.
If the outdoor temperature is below 65 degrees F:
After completing the refrigerant line connections, leak
checking the system, and evacuating the indoor section
and all line connections (using proper methods), perform
the following steps:
1. Determine the recommended charge addition (if applicable)
for the system being installed. This information is in the
unit’s QRD (Quick Reference Data sheet).
2. Calculate the amount of additional refrigerant needed for
the line set length of the actual installation. This information
is on the first page of the unit’s QRD (Quick Reference
Data sheet).
3. Weigh in the additional charge amounts determined by
step 1 and 2 above.
4. Return to the system when the outdoor temperature is 65
degrees F or higher and follow the steps defined in step
4 of the “If the outdoor temperature is 65 degrees F or
higher” section above.
Charging the Unit in AC mode
If the outdoor temperature is 65 degrees F or higher:
After completing the refrigerant line connections, leak
checking the system, and evacuating the indoor section
and all line connections (using proper methods), perform
the following steps:
1. Determine the recommended charge addition (if applicable)
for the system being installed. This information is in the
unit’s QRD (Quick Reference Data sheet).
2. Calculate the amount of additional refrigerant needed for
the line set length of the actual installation. This information
is on the first page of the unit’s QRD (Quick Reference
9
WIRING DIAGRAM
Split System Air Conditioner (Outdoor Section)
Single Phase
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/40VA/class 2 circuit. See furnace/airhandler installation
instructions for control circuit and optional relay/transformer kits.
7. Caution: The Low Voltage wiring shall not be grounded to this unit.
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.
R
208/230V
BLUE
ORANGE
C
S
OUTDOOR
FAN MOTOR
F
C
DUAL
CAPACITOR
L2
T1
R
COMPRESSOR
CONTACTS
T2
YELLOW/BLACK
C
COMPRESSOR
C
F
T1
L1
L2
HPS
S
BLACK
C OUTDOOR FAN
CC
R
BLACK
MOTOR
YELLOW
R
T2
CONTACTOR
S
H
H
YELLOW
L1
C
S
RED
SEE NOTES
6 AND 7
24 VOLT FIELD
CONNECTIONS
BLACK
GROUNDING
SCREW
L1 L2 GND
SINGLE PHASE
FIELD SUPPLY
SEE NOTES
6 AND 7
HPS
LEGEND:
CC - Contactor Coil
HPS - High Pressure Switch
FIELD WIRING
LOW VOLTAGE
HIGH VOLTAGE
TO THERMOSTAT
10465980
Figure 4. Wiring Diagram for *SA4ME5M1SN (2, 2.5, 3, 3.5, 4 & 5 Ton Units)
10
10/23
REFRIGERANT RECOVERY
WARNING:
Recovering refrigerant involves breaking into the
refrigerant circuit. It should only be attempted by
qualified trained personnel thoroughly familiar
with this equipment. Under no circumstances
should the owner attempt to do this work.
Failure to comply with this warning could result
in property damage, personal injury, or death.
• When removing refrigerant from a system, either for
servicing or decommissioning, it is recommended good
practice that all refrigerants are removed safely.
• When transferring refrigerant into cylinders, ensure that only
appropriate refrigerant recovery cylinders are employed.
Ensure that the correct number of cylinders for holding the
total system charge is available. All cylinders to be used
are designated for the recovered refrigerant and labelled
for that refrigerant (i.e. special cylinders for the recovery
of refrigerant). Cylinders shall be complete with pressurerelief valve and associated shut-off valves in good working
order. Empty recovery cylinders are evacuated and, if
possible, cooled before recovery occurs.
• The recovery equipment shall be in good working order
with a set of instructions concerning the equipment that
is at hand and shall be suitable for the recovery of the
flammable refrigerant. If in doubt, the manufacturer should
be consulted. In addition, a set of calibrated weighing scales
shall be available and in good working order. Hoses shall
be complete with leak-free disconnect couplings and in
good condition.
• The recovered refrigerant shall be processed according
to local legislation in the correct recovery cylinder, and
the relevant waste transfer note arranged. Do not mix
refrigerants in recovery units and especially not in cylinders.
• If compressors or compressor oils are to be removed,
ensure that they have been evacuated to an acceptable
level to make certain that flammable refrigerant does not
remain within the lubricant. The compressor body shall not
be heated by an open flame or other ignition sources to
accelerate this process. When oil is drained from a system,
it shall be carried out safely.
• It is recommended good practice that all refrigerants are
recovered when possible.
• Before decommissioning the system:
• Become familiar with the equipment and its operation.
• Take a sample of oil and refrigerant in case analysis is
required prior to re-use of recovered refrigerant.
• Ensure that electrical power is available for use in the
decommissioning operations
• Ensure that mechanical handling equipment is available,
if required, for handling refrigerant cylinders
• Ensure that all personal protective equipment (PPE) is
available and being used correctly.
• Ensure that the recovery process is supervised at all
times by a competent person.
• Ensure that the recovery equipment to be used
and refrigerant cylinders conform to the appropriate
standards.
• Position the recovery cylinder on the scales before
recovery of refrigerant begins.
• Procedure For Decommissioning System
1. Isolate the system electrically.
2. Pump down the refrigerant system, if possible.
3. If a vacuum is not possible, make a manifold so that
refrigerant can be removed from various parts of the
system.
4. Start the recovery machine and operate it in accordance
with its instructions. Refer to the Refrigerant Recovery
section of this document for additional information.
5. Do NOT overfill cylinders (no more than 80% volume
liquid charge).
6. Do NOT exceed the maximum working pressure of the
cylinder, even temporarily.
7. When the cylinders have been filled correctly and the
process completed, make sure that the cylinders and
the equipment are removed from site promptly and all
isolation valves on the equipment are closed off.
8. Recovered refrigerant shall not be charged into another
refrigerating system unless it has been cleaned and
checked.
9. Label the system stating that it has been decommissioned
and emptied of refrigerant. The label shall be dated
and signed. Ensure that there are still labels on the
equipment stating that the system contains flammable
refrigerant to properly identify it.
DECOMMISSIONING
WARNING:
Decommissioning the system involves breaking
into the refrigerant circuit. It should only be
attempted by qualified trained personnel
thoroughly familiar with this equipment. Under
no circumstances should the owner attempt to
do this work. Failure to comply with this warning
could result in property damage, personal injury,
or death.
11
INSTALLATION CHECKLIST
ELECTRICAL SYSTEM
INSTALLATION ADDRESS:
CITY:
STATE:
Electrical connections tight?
YES
NO
Line voltage polarity correct?
YES
NO
Rated Voltage:
UNIT MODEL #
Maximum deviation of voltage from average volts:
UNIT SERIAL #
INSTALLER NAME:
CITY
STATE
Unit Installed Minimum clearances
shown on page 5?
YES
Has the owner’s information been
reviewed with the customer?
Has the Literature Package been
left with the unit?
YES
NO
Is the thermostat level?
YES
NO
Is the heat anticipator setting
correct? (If Applicable)
YES
NO
NO
REPLACEMENT PARTS
YES
NO
Replacement parts are available through your distributor.
Please have the complete model and serial number of the
unit when ordering replacement parts.
YES
NO
REFRIGERATION SYSTEM
Was unit given 24 hr warm up
period for crankcase heaters?
Has the thermostat been calibrated?
YES
NO
ELECTRICAL:
• Capacitors
• Temperature Limit Switches
• Compressors
• Thermostats
• Contactors
• Time Delay Relays
• Pressure Switches
• Transformers
• Relays
Stage-1 Liquid Pressure (high side):
Stage-1 Suction Pressure (low side):
MOTORS:
• Blower Motor
• Fan Motor
COMPONENTS:
• Blower Assembly
• Fan Grille
• Cabinet Panels
• Filter/Driers
• Expansion Valves
Specifications & illustrations subject to change without notice or incurring obligations (02/25).
O’Fallon, MO, © Nordyne LLC 2025. All Rights Reserved.
10500250
(NEW)
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