Reznor S5BP User Manual

S5BP SERIES 11.2 EER

USER’S MANUAL / INSTALLATION INSTRUCTIONS

R410A SPLIT SYSTEM AIR CONDITIONER - 3 PHASE

IMPORTANT

Please read this information thoroughly and become familiar with the capabilities and
use of your appliance before attempting to operate or maintain this unit. Keep this
literature where you have easy access to it in the future. If a problem occurs, check the
instructions and follow recommendations given. If these suggestions don’t eliminate
your problem, call your servicing contractor.

These instructions are primarily intended to assist qualifi ed 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.

DO NOT DESTROY. PLEASE READ CAREFULLY AND
KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.

2

USER INFORMATION

Important Safety Information ....................................4

Operating Instructions ...............................................4

Cooling Operation .....................................................4

Heating Operation .....................................................4

Operating the Air Conditioner for Automatic

Cooling and Heating ..................................................4

Operating the Indoor Blower Continuously ................4

Turning the Air Conditioner Off ..................................4

Air Conditioner Maintenance .................................... 4

Troubleshooting ......................................................... 4

INSTALLER INFORMATION

Important Safety Information ....................................5

Air Conditioner Installation .......................................6

Before You Install this Unit .........................................6

Locating the Air conditioner .......................................6

Packaging Removal ...................................................6

Rigging & Hoisting .....................................................6

Rooftop ......................................................................6

Ground Level .............................................................7

Connecting Refrigerant Tubing Between the

Indoor & Outdoor Unit ...............................................7

Electrical Wiring ..........................................................8

Pre - Electrical Checklist ...........................................8

Line Voltage ...............................................................8

Grounding..................................................................8

Unbalanced 3-Phase Supply Voltage ........................9

Thermostat Connections ...........................................9

Optional Electric Heater Kits .....................................9

Startup & Adjustments ............................................10

Pre - Start Checklist ................................................10

Start-up Procedure ..................................................10

Air Circulation - Indoor Blower .............................10

Short Cycle Protection .........................................10

WARRANTY INFORMATION

A warranty certifi cate with full details is included with the
air conditioner. Carefully review these responsibilities with
your dealer or service company. The manufacturer will not
be responsible for any costs found necessary to correct
problems due to improper setup, improper installation,
adjustments, improper operating procedure on the part
of the user, etc. Some specifi c examples of service calls
which are not included in the limited warranty are:

• Correcting wiring problems in the electrical circuit
supplying the air conditioner.

• Resetting circuit breakers or other switches.

• Adjusting or calibrating of thermostat.

System Cooling .................................................... 10

System Heating ....................................................10

Refrigerant Charging ............................................... 10

Charging R410A Units in AC Mode with

Outdoor Temperatures Above 55° F ..................... 11

Air Conditioner Maintenance ................................... 11

Replacement Parts ................................................... 11

Component Functions .............................................12

Figures & Tables ....................................................... 12

Figure 5. S5BP Air conditioner Dimensions ......... 12

Table 3. Unit Dimensions & Shipping Weights ..... 12

Electrical Information ............................................... 13

Table 4. Electrical Specs & Physical Data ............13

Figure 6. S5BP Wiring Diagram ........................... 14

Figure 7. Air conditioner T-stat Connections ......... 15

Cooling Charging Charts ......................................... 17

Figure 8. Charging Chart for 7.5 Ton Units ........... 17

Figure 9. Charging Chart for 10 Ton Units ............ 17

INSTALLATION / PERFORMANCE CHECKLIST ..... 20

3

USER INFORMATION

IMPORTANT SAFETY INFORMATION

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.

OPERATING INSTRUCTIONS

NOTE: Thermostat styles vary. Some models may not

include the AUTO mode and others will have the AUTO
in place of the HEAT and COOL. Others may include all
three. Please refer to the thermostat manufacturer’s User
manual for detailed programming instructions.

Cooling Operation

1. Set the thermostat’s system mode to COOL or AUTO
and change the fan mode to AUTO. See Figure 1

2. Set the temperature selector to the desired
temperature level. The outdoor fan, compressor, and
blower motor will all cycle on and off to maintain the
indoor temperature at the desired cooling level.

NOTE: If the temperature level is re-adjusted, or the
system mode is reset, the fan and compressor in the
outdoor unit may not start immediately. A protective
timer circuit holds the compressor and the outdoor fan
off for approximately 5 minutes following a previous
operation or the interruption of the main electrical
power.

Heating Operation

1. Set the thermostat’s system mode to HEAT or AUTO
and change the fan mode to AUTO. See Figure 1.

2. Set the temperature selector to the desired
temperature level. The optional heating equipment
(furnace or electric heat) will cycle on & off to maintain
the indoor temperature at the desired heating level.

Operating the AC for Automatic Cooling & Heating

1. Set the thermostat system mode to AUTO and the
thermostat fan mode to AUTO. See Figure 1.

2. Set the thermostat temperature selector to the desired
temperature level. The thermostat will maintain the
desired temperature level by switching between either
the outdoor cooling unit or the indoor heating unit
(furnace or electric heat) automatically.

Operating the Indoor Blower Continuously

The continuous indoor blower operation is typically used to
circulate the indoor air to equalize a temperature unbalance
due to a sun load, cooking, or fi replace operation. Set the
thermostat fan mode to ON (Figure 1). The indoor blower
starts immediately, and will run continually until the fan
mode is reset to AUTO.

The continuous indoor blower operation can be obtained
with the thermostat system mode set in any position,
including OFF.

Turning the Air conditioner Off

Change the thermostat’s system mode to OFF and the fan
mode to AUTO (See Figure 1). NOTE: The system will not
operate, regardless of the temperature selector setting.

Fan

Mode

Figure 1. Digital Thermostat

AIR CONDITIONER MAINTENANCE

Proper maintenance is most important to achieve the best
performance from the appliance and should be performed
frequently at the beginning of each air conditioning season.

System

Mode

Temperature

Selector

WARNING:

Your Air Conditioner contains liquid and gaseous
refrigerant under pressure. Installation and
servicing should only be attempted by qualifi ed,
trained personnel thoroughly familiar with the
equipment and safe responsible refrigerant
handling procedures. Failure to comply with
this warning could result in equipment damage,
personal injury, or death.

• Keep the outdoor unit clean. Hose off periodically and
keep unit fi ns clear of leaves and grass clippings.

• Keep the outdoor unit clear of obstructions.
DO NOT obstruct airfl ow with tall plants or shrubs.
DO NOT store gasoline or other fl ammable materials
on or near the outdoor unit.

• Never operate the appliance without a fi lter installed in
the return air duct. Inspect fi lters frequently and replace
when necessary with fi lter of same dimensional size.

TROUBLESHOOTING

• Check the thermostat setting. Make sure the system
mode and temperature settings are correct.

• Check the electrical panel for tripped circuit breakers.

• Check the fi lters for dust accumulation.

• Check the outdoor unit and make sure it is clean and
not covered with grass or leaves.

4

INSTALLER INFORMATION

IMPORTANT SAFETY INFORMATION

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:

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, fi re, electrical shock or
other hazardous conditions which may result in
personal injury or property damage

WARNING:

S5BP Split System Air conditioners leave the
factory with a 90 oz. (5.63 Lbs.) R410A refrigerant
holding charge. Follow all charging instructions
for maximum unit performance and effi ciency.
Some local codes require licensed installation/
service personnel to service this type of
equipment. Refrigerant charging must be done
by qualifi ed 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:

This unit uses refrigerant R-410A. DO NOT use
any other refrigerant in this unit. Use of another
refrigerant will damage the unit.

WARNING:

The information listed below must be followed
during the installation, service, and operation
of this unit. Unqualifi ed 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 per

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.

• 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
qualifi ed 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.

• Installation of equipment may require brazing
operations. Installer must comply with safety codes
and wear appropriate safety equipment (safety glasses,
work gloves, fi re extinguisher, etc.) when performing
brazing operations.

• This unit is designed for outdoor installations only and
should be located in a position as shown on page 6.

• 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.

.

sonal

5

AIR CONDITIONER INSTALLATION

General Information

The S5BP series air conditioner is designed only for
outdoor rooftop or ground level installations. This unit has
been tested for capacity and effi ciency in accordance
with A.R.I. 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.

 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 fi ns are straight. If necessary, comb fi ns to remove
fl attened or bent fi ns. Claims for damage (apparent or
concealed) should be fi led 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 Air Conditioner

• Survey the job site to determine the best location for
mounting the outdoor unit.

• Overhead obstructions, poorly ventilated areas, and
areas subject to accumulation of debris should be
avoided.

• Suffi cient clearance for unobstructed airfl ow through the
outdoor coil must be maintained in order to achieve rated
performance. See Figure 2 for minimum clearances to
obstructions.

• Consideration should be given to availability of electric
power, service access, noise, and shade.

TOP OF UNIT

18"

18"

TO BE

UNOBSTRUCTED

18"

18"

Figure 2. Clearance Requirements

Packaging Removal

Locate and remove all screws securing the unit to the
shipping skid. NOTE: To prevent damage to the tubing
connections, carefully remove the carton and user’s
manual from the equipment. Discard the shipping carton.

Rigging and Hoisting

WARNING:

To avoid the risk of property damage, personal
injury, or death, it is the rigger’s responsibility
to ensure that whatever means are used to hoist
the unit are safe and adequate:

• The lifting equipment must be adequate for the

load. Refer to Table 3 (page 12) for unit weights.

• The unit must be lifted from the holes in the

base rails using cables or chains.

• Spreader bars are required to protect the unit

and ensure even loading.

• Keep the unit in an upright position at all times.

• All panels must be securely in place during

rigging and hoisting.

Rooftop

Rooftop installations must be located according to local
building codes or ordinances and these requirements:

• Units may be installed on Class A, B, or C roof covering
material. The roof must be capable of handling the
weight of the unit. For unit weights, see Table 3 (page

12). Reinforce the roof if necessary.

• Secure optional mounting pad or frame to roof using
acceptable mechanical methods per local codes.

6

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 2 (page 6).

• A suitable mounting pad (Figure 3) 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.

2”

Figure 3. Ground Level Installation

Connecting Refrigerant Tubing Between the Indoor
& Outdoor Unit

CAUTION:

This system uses R-410A refrigerant with POE
oil. 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 fl owing 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 fi eld 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 are listed in Table 4
(page 13) 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 fi 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 fi lter dryer already present
in the liquid line, the fi lter dryer must be replaced with
the one supplied with the unit. The fi lter 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.

7

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 specifi cations on the unit
rating plate. Refer to Table 4 (page 13).

 Verify that the service provided by the utility is suffi cient

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 (Figure 6, page 14). Inspect for loose
connections.

 Phase balance on 3 phase units must always be

checked. See Unbalanced 3-Phase Supply Voltage
section (page 9).

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 fi eld 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 diagram /
schematic (Figures 6 & 7) for identifi cation and location
of outdoor unit fi eld 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 unit as listed in Table 1. 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.

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.

COPPER WIRE SIZE — AWG

(1% Voltage Drop)

Supply Wire Length-Feet

200 150 100 50

6 8 10 14 15
46812 20
46810 25
44610 30
3468 35
3468 40
2346 45
2346 50
2346 55
1234 60

Wire Size based on N.E.C. for 60° type copper conductors.

Table 1. Copper Wire Size

!

Supply Circuit

Ampacity

8

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 effi ciency 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:

1. Measure the line
voltages of your 3-phase

Example:

power supply where it
enters the building and
at a location that will
only be dedicated to the
unit installation (at the

AB = 451V
BC = 460V
AC = 453V

units circuit protection
or disconnect).

2. Determine the average voltage in the power supply.

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).

3. Determine the maximum deviation:

Thermostat Connections

• Ther mostat connections should be made in accordance
with the instructions supplied with the thermostat and
the indoor equipment.

• Single stage or two-stage thermostats can be used
with this equipment depending on optional accessories
(i.e. economizer) installed with the unit. Select a
thermostat that operates in conjunction with the installed
accessories. A typical commercial installation with an air
conditioner thermostat and air handler (with & without
an economizer) is shown in Figure 7 (page 15).

• 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. Recommended
wire gauge and wire lengths for typical thermostat
connections are listed in Table 2.

• The thermostat should be mounted about 5 feet
above the fl oor 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 fi replaces, sunlight, or lighting fi xtures, and
convective heat from warm air registers or electrical
appliances. Refer to the thermostat manufacturer’s
instruction sheet for detailed mounting and installation
information.

Example:

From the values given in step 1, the BC voltage
(460V) is the greatest difference in value from
the average:

460 - 454 = 6

Highest Value

454 - 451 = 3
454 - 453 = 1

4. Determine percent of
voltage imbalance by
using the results from
steps 2 & 3 in the
following equation.

% Voltage Imbalance

=100x

Example:

100

x

= 1.32%

6

454

max voltage deviation
from average voltage

average voltage

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%.

Recommended T-Stat Wire

Thermostat
Wire Gauge

Length (Unit to T-Stat)

2-Wire

(Heating)

(Heating/Cooling)

5-Wire

24 55 25

22 90 45

20 140 70

18 225 110

Table 2. Thermostat Wire Gauge

Optional Electric Heater Kits

Optional fi eld-installed electric heater kits are available
in 10 kw through 36 kw heating capacities. Split System
Air conditioners are designed to allow optional auxiliary
electric heat to be fi eld installed as required by the building’s
particular heating load. The options available for each
unit are shown in the heater kit installation instructions.

Install the heater kits as directed by the instructions
supplied with the heater kit. Follow all cautions and
warnings as directed.

9

START UP & ADJUSTMENTS

Pre-Start Check List

 Verify the indoor unit is level and allows proper

condensate drainage.

 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 duct work is sealed to prevent air leakage.
 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.

The thermostat's function mode should be set to OFF and
the fan mode should be set to AUTO. Close all electrical
disconnects to energize the system.

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 insuffi cient
air is detected, examine ductwork for leaks or
obstructions.

3. Set the thermostat fan mode to AUTO and verify the
blower stops running.

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 fi eld wires
at the disconnect. DO NOT alter unit wiring.

Anti-Short Cycle Timer Protection

1. Set the thermostat system mode to COOL. Note the
temperature setting of the thermostat and gradually
raise the set-point temperature until the unit de­energizes.

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 compressor
and fan energize 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 fi eld 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 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.

Refrigerant Charging

WARNING:

S5BP Split System Air Conditioners leave
the factory with a 90 oz. (5.63 Lbs.) R410A
refrigerant holding charge. Follow these charging
instructions for maximum unit performance and
effi ciency. Some local codes require licensed
installation/service personnel to service this
type of equipment. Refrigerant charging must be
done by qualifi ed 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.

10

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 fi nalizing the full system refrigerant charge. For
fi nal charges based on matched systems and specifi ed
line lengths, see physical and electrical specifi cations
(Table 4, page 13).

• To achieve rated capacity and effi 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.

• Refrigerant charging charts (Figures 8 & 9) are
applicable only to matched assemblies of NORDYNE
equipment and listed airfl ows for the indoor coil.
S5BP outdoor units with indoor coils not listed are not
recommended and deviations from rated airfl ows or
non-listed combinations may require modifi cation to the
expansion device and refrigerant charging procedures
for proper and effi cient system operation. See pages
16 - 17.

• 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.

Charging an R410A system in AC mode at outdoor
temperatures above 55° F for optimized sub-cooling of
10° F - 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

from the appropriate charging chart (Figures 8 or 9).

• 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.

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 fi lters at the beginning
of each heating and cooling season, or more frequently
if required.

• Inspect the condensate drain and 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
fi lter in the return air system. Replace disposable
fi lters with the same type and size.

• Do not attempt to add additional oil to motors
unequipped with oil tubes. The compressor is
hermetically sealed at the factory and does not require
lubrication.

REPLACEMENT PARTS

Replacement parts are available through all Nordyne
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

distributors.

11

COMPONENT FUNCTIONS

Anti-Short Cycle Timer (ASCT)

A protective short cycle timer is factory installed and located
in the control panel of the outdoor section. If power to the
compressor low voltage control circuit is interrupted, the
outdoor unit will not energize for approximately 5 minutes.

High Pressure Switch (HPS)

A high-pressure switch is factory-installed and located in
the liquid line internal to the outdoor unit. The switch is
designed to protect the system when very high pressures
occur during abnormal conditions. Under normal
conditions, the switch is closed. If the liquid pressure
rises above 650 psig, then the switch will open and de­energize 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. Thus, when the switch opens and then closes, there
will be a 5 minute short cycling delay before the outdoor
unit will energize.

FIGURES & TABLES

DO NOT OBSTRUCT TOP OF UNIT

Allow 6' Minimum Clearance

Low Pressure Switch (LPS)

A low-pressure switch is factory-installed and 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. Thus, when the switch opens and then
closes, there will be a 5 minute short cycling delay before
the outdoor unit will energize.

D

W

H

Figure 5. S5BP Air Conditioner Dimensions

Model

Number

S5BP-

090C 386 420 44 1/4 37 1/2 37 1/2 50
090D 386 420 44 1/4 37 1/2 37 1/2 50
120C 423 457 52 1/4 37 1/2 37 1/2 58
120D 423 457 52 1/4 37 1/2 37 1/2 58

Without Packaging Shipping Weight All dimensions in inches

Unit Weights (Lbs.) Height -H- Width -W- Depth -D- Shipping Height

12

Table 3. Unit Dimensions & Shipping Weights

ELECTRICAL INFORMATION

Model Number

S5BP-

208-230V 460V 208-230V 460V

920888 920889 920890 920891

PERFORMANCE DATA

090C 090D 120C 120D

Gross Cooling Capacity (95

1

Net Cooling Capacity - Btuh 90,000 90,000 117,000 117,000

1

A.R.I. Rated Airfl ow - C.F.M. 3,000 3,000 4,000 4,000

2

Cooling - Effi ciency E.E.R. (Btu/Watt) 11.70 11.70 11.20 11.20

3

Cooling - Effi ciency I.E.E.R. 11.80 11.80 11.50 11.50

o

F) Btuh 92,400 92,400 121,700 121,700

ELECTRICAL RATINGS

Volts / Phase / Hz. 208-230 / 3 / 60 460 / 3 / 60 208-230 / 3 / 60 460 / 3 / 60

Operating Voltage 187-253 414-506 187-253 414-506

Unit Rated Ampacity 28.3 13.9 33.4 18.4

Minimum Circuit Ampacity (MCA) 34.6 17.0 40.9 22.6

4

Max. Overcurrent Protection (MOP) 50 25 70 35

Compressor Data:

1 ea. 1 ea. 1 ea. 1 ea.

Compressor (Scroll) ZP83KCE-TF5 ZP83KCE-TFD ZP103KCE-TF5 ZP103KCE-TFD

Volts / Phase /Hz. 208-230 / 3 / 60 460 / 3 / 60 208-230 / 3 / 60 460 / 3 / 60

Rated Load Amps (RLA) 25.0 12.2 30.1 16.7

Lock Rotor Amps (LRA) 164 100 225 114

Stages / Percent 1 / 100 1 / 100 1 / 100 1 / 100

Crankcase Heater - Qty. / Type 1 / Band 1 / Band 1 / Band 1 / Band

Outdoor Fan Assembly:

1 ea. 1 ea. 1 ea. 1 ea.

Volts / Phase /Hz. 208-230 / 1 / 60 460 / 1 / 60 208-230 / 1 / 60 460 / 1 / 60

Motor - HP / RPM 3/4 - 875 3/4 - 875 3/4 - 875 3/4 - 875

Motor Amps 3.3 1.7 3.3 1.7

Fan Blade - Diameter / Pitch / # Blades 30” / 22 / 3 30” / 22 / 3 30” / 26 / 3 30” / 26 / 3

RPM / CFM (Max. - Total) 850 - 7,200 850 - 7,200 850 - 8,000 850 - 8,000

PHYSICAL DATA & REFRIGERANT SPECS

Outdoor Coil Assembly:

2

Area (Ft.

) 31.94 31.94 38.33 38.33

1 ea. 1 ea. 1 ea. 1 ea.

Rows - FPI 2 - 16 2 - 16 2 - 18 2 - 18

Tube Diameter 3/8” OD 3/8” OD 3/8” OD 3/8” OD

Refrigerant Suction Line - Length / OD

0 - 75 Ft. / 1-1/8” 0 - 75 Ft. / 1-1/8” 0 - 100 Ft. / 1-3/8”

76 - 100 Ft. / 1-3/8”

(6)

76 - 100 Ft. / 1-3/8”

(6)

(6)

0 - 100 Ft. / 1-3/8”

Refrigerant Liquid Line - Length / OD All Lengths - 5/8” OD All Lengths - 5/8” OD All Lengths - 5/8” OD All Lengths - 5/8” OD

Refrigerant Charge. R410A R410A R410A R410A

Factory Holding Charge - oz 90 90 90 90

5

Total System with 25’ Line Set 416 416 520 520

High Pressure Switch (PSIG)

Loss of Charge Pressure Switch (PSIG)

Cut Out: 650 +/- 15

Cut In: 460 +/- 15

Cut Out: 5 +/- 5

Cut In: 20 +/- 5

Net Unit Weight - Lbs. (No Packaging) 386 386 423 423

Approximate Shipping Weight - Lbs. 420 420 457 457

Note: Net capacity includes indoor blower motor heat deduction. Gross capacity does not include indoor blower motor heat deduction.

1

Cetifi ed in accordance with A.R.I. Standard 340/360 at 95° F Outdoor DB and 80° F db/67° F wb evaporator entering air at minimum

external duct static pressures allowed by the standard.

2

E.E.R. - Energy Effi ciency Ratio. E.E.R. is determined @ 95° F Outdoor DB & 80° F DB / 67° F WB Air Indoor

3

I.E.E.R. - Integrated Energy Effi ciency Ratio. Cetifi ed in accordance with A.R.I. Standard 340/360.

4

Delay Fuse or HACR Type Curcuit Breakers can be used.

5

Add / Subtract 9.0 oz. of refrigerant per 5 feet change in length from original 25 Ft. lineset total system charge.

6

Requires a 1-3/8” to 1-1/8” reducer line to unit.

(6)

Table 4. Electrical Specifi cations & Physical Data - 11.2 E.E.R. - 3 Phase / 60 Hz

13

Three Phase

1. Couper le courant avant de faire letretien.

2. Employez uniqement des conducteurs en cuivre.

RED

3 PHASE OUTDOOR MOTOR WIRING

TEST

T2

T1T3

TIMER

CYCLE

ANTI-SHORT

0610

711089A

BROWN

BLACK

T1 T2 T3

LPS

BROWN

BLACK

L3

YELLOW

L1

YELLOW

YELLOW

OR ORANGE

YELLOW

OR ORANGE

RED

BLACK

60 Hz

TRANSFORMER

HPS

L2

GREEN

CONTACTOR

GREEN

BLACK

24V

230V

SECONDARY

460V

WHITE

PRIMARY

208V

C

Y

R

SEE NOTE 7&8

24V

380V

415V

(Replaces 7110890)

¢711089?¤

PRIMARY

BLACK

WHITE

SEE NOTE 9

T1 T2 T3

ORANGE

AUX.

L3

BLACK

BLACK

YELLOW

T1

MOTOR

OUTDOOR FAN

SINGLE PHASE

CCH

T2

ORANGE

BLACK

PURPLE

R

S

SINGLE PHASE OUTDOOR FAN MOTOR

3. Furnace/Air Handler w/factory equipped 24 V control circuit transformers, should be

1. Disconnect all power before servicing.

NOTES:

Commercial Split System Air Conditioner (Outdoor section)

WIRING DIAGRAM

modified/rewired to ONLY use 24V transformer from outdoor section. See installation

2. For supply connections, use copper conductors only.

6. Wires connected to normally closed contacts.

4. For replacement wires, use conductors suitable for 105° C

instructions for typical modifications.

5. For ampacities and overcurrent protection, see unit rating plate.

C

L3

L2

L1

on 208V tap.

7. Transformer primary connection will match unit rated voltage.

8. For 208V operation remove white wire from 230V tap and place

place on 415V tap.

9. For 415/420V operation remove white wire from 380V tap and

CC

CC

CC

RED

MOTOR

L2

THREE PHASE

OUTDOOR FAN

L1

L1 L2 L3

SWITCH

SEE NOTE 6

T3

CCHCAS

C

S

BLACK

BLACK

COMPRESSOR

T3

T2

R

T1

BLACK

COMPRESSOR

L1

L3

GRD

L2

THREE PHASE

FIELD SUPPLY

ASCT

24V

CC

ASCT

50 Hz

CONNECTIONS

TRANSFORMER

C

LOW

SWITCH

PRESSURE

HIGH

SWITCH

PRESSURE

Y

R

LEGEND:

FIELD WIRING

HPS HIGH PRESSURE SWITCH WITH AUTO RESET

CAS CONTACTOR AUXILLIARY SWITCH (1NO/1NC)

CCH COMPRESSOR CRANKCASE HEATER

ASCT ANTI SHORT CYCLE TIMER

LOW VOLTAGE

CC COMPRESSOR CONTACTOR

HIGH VOLTAGE

FACTORY WIRING

LOW VOLTAGE

HIGH VOLTAGE

LPS LOW PRESSURE SWITCH

14

Figure 6. S5BP Wiring Diagram

NOTE:

C &W2 to be connected to electric heat.

SINGLE STAGE

HEAT/COOL THERMOSTAT

RCG

YW

OPTIONAL

TO FIELD
SUPPLIED DISCONNECT

GND

L1

L2

L3

BLOWER

MOTOR

FREEZESTAT

C

Y
R

OUTDOOR

SECTION

C

Y
R

OUTDOOR

SECTION

SINGLE STAGE

HEAT/COOL

THERMOSTAT

RCG

YW

OPTIONAL

FREEZESTAT

G

C
W2
W1

O

Y

R

TERMINAL

BOARD

BROWN

G
C

W2

GREEN

BLACK

See Note

W1

O
Y

BLACK

R

TERMINAL

BOARD

SINGLE STAGE HEAT/COOL THERMOSTAT- NO ECONOMIZER

1. C & W2 to be connected to electric heat.

2. Remove BLACK wire from air handler low voltage terminal board
Y terminal and connect to YELLOW wire from economizer.

3. 2nd Stage refrigerant cooling with optional economizer installed. A 2
stage thermostat is required for simultaneous operation of the economizer

TO FIELD
SUPPLIED DISCONNECT

GND

BLACK

BLACK

GREEN

Note 1

Note 3

AIR HANDLER

SECTION

BLOWER

MOTER

Note 2

L2

L3

B

Y1

Y2

C7150
M.A.S.

L1

Note 4

GRY

YEL

GRN

BLK

WHITE

ORN
BLUE

RED

RED

and refrigerant system. Connect Y2 from 2 stage thermostat to BLUE
wire from economizer. If installing an economizer in this unit, refer to the
Economizer installation instructions for proper set up and operation.

4. Heat Pump Economizer Relay. For heat pump applications only, connect B
from thermostat to GREY wire from Economizer. Required for proper operation
of an economizer (optional) in the heat pump Heating mode. If installing an
economizer in this unit, refer to the Economizer installation instructions for
proper set up and operation.

GRY-90”

AB

9

7

46
13

OPTIONAL

ECONOMIZER

AIR HANDLER

SECTION

NOTES:

GRN-18”
GRN-18”

VIO-14”

s

BLU-14”

C7400A

YEL-18”

W7459A

TR

S

o

S

r

1

3

T

P

2

4

TR 1

JUMPER

5

2K

T1

P1

WIRE

1S

1S

TB-11 M7415A

BLK-12”

T

RED-12”

T1

GRY-12”

P1

BLK-12”

P

BLU-12”

TR

TR1

MA

MIN.
POT.

SINGLE STAGE HEAT/COOL THERMOSTAT- WITH ECONOMIZER

Figure 7. Typical Air conditioner Thermostat Connections

15

S5BP CHARGING CHARTS - COOLING ONLY

Application Notes on the Use of Charging Charts

• 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 leakages, always use a nitrogen (inert) gas to protect the refrigerant system and pressure
check the repair before re-charging. Always replace the fi lter-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 specifi ed on the unit rating label.

• All S5BP-090/120 units are shipped from the factory with a 90 oz. holding charge refrigerant. Inspect the unit
rating label to determine the units information prior to working on the system. DO NOT mix different refrigerants
or charge the unit with a refrigerant not listed on the unit rating label.

• Charging charts are valid for a variety of indoor return air conditions and are most infl uenced by the outdoor
ambient temperature, outdoor fan operation, and the unit operating voltage. Before using these charts, ensure
the unit is in a stable operating mode. As shown in the charging charts (Figures 8 or 9, page 17), the ideal system
sub-cooling can vary over the range of operation. Reference the charts to determine the ideal amount of sub­cooling for a given liquid pressure. Units charged to other values will not perform at the rated unit effi ciency (EER)
or rated Coeffi cient 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 charts 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
signifi cant deviation than the amount stated above.

• DO NOT use the charts in systems that have a fan cycling under low-ambient control. Refer to the low-ambient
kit instructions for more information. (If applicable)

16

S5BP Charging Chart - Cooling

7.5 Ton Split System A.C. w/ B5SM-090* Indoor Air Handler

525

500

Remove refrigerant when above curve

475

450

425

400

375

350

325

300

Liquid Pressure (psig)

275

250

225

Add refrigerant when below curve

200

175

55 60 65 70 75 80 85 90 95 100 105 110 115 120 125

Liquid Temperature (° F)

Figure 8. Charging Chart for 7.5 Ton Units

S5BP Charging Chart - Cooling

10 Ton Split System AC w/ B5SM-120* Indoor Air Handler

525

500

Remove refrigerant when above curve

475

450

425

400

375

350

325

300

Liquid Pressure (psig)

275

250

225

200

175

55 60 65 70 75 80 85 90 95 100 105 110 115 120 125

Liquid Temperature (° F)

Add refrigerant when below curve

Figure 9. Charging Chart for 10 Ton Units

17

18

19

INSTALLATION/PERFORMANCE CHECK LIST

INSTALLATION ADDRESS:

CITY ________________________ STATE ________________

UNIT MODEL # ________________________________________

UNIT SERIAL # _______________________________________

Unit Installed Minimum clearances per
Figure 2 (page 6)?

INSTALLER NAME:

CITY _______________________ STATE ________________

ELECTRICAL SYSTEM:

Electrical connections tight? YES NO

Line voltage polarity correct? YES NO

Rated Voltage: ___________________________________ VOLTS

L1-L2 Volts: _____________________________________ VOLTS

L1-L3 Volts: _____________________________________ VOLTS

YES NO

REFRIGERATION SYSTEM:

Was unit given 24 hr warm up period
for crankcase heaters?

Stage-1 Liquid Pressure (high side) ________________________

Stage-1 Suction Pressure (low side) ________________________

Has the owner’s information been
reviewed with the customer?

Has the Literature Package been left
with the unit?

YES NO

YES NO

YES NO

L2-L3 Volts: _____________________________________ VOLTS

Avg. Volts: ______________________________________ VOLTS

Max. deviation of voltage
from avg. volts: ___________________________________ VOLTS

% Volt imbalance: ________________________________ VOLTS

Blower Motor HP: ________ Sheave Setting ___________# Turns

Has the thermostat been calibrated? YES NO

Is the thermostat level? YES NO

Is the heat anticipator setting correct?
(If Applicable)

YES NO

IMPORTANT - This product has been designed and
manufactured to meet ENERGY STAR criteria for energy
effi ciency. However, proper refrigerant charge and proper
air fl ow are critical to achieve rated capacity and effi ciency.
Installation of this product should follow the manufacturer’s
refrigerant charging and air fl ow instructions. Failure to
confi rm proper charge and airfl ow may reduce energy
effi ciency and shorten equipment life. This Applies only
to 7.5 TON MODELS

Specifi cations & illustrations subject to change without notice or incurring obligations.
O'Fallon, MO | Printed in U.S.A. (06/10)

¢7090936¤

709093A (Replaces 7090930)