Amana ARUF**14 Series Manual

RECOGNIZE THIS SYMBOL
AS A SAFETY PRECAUTION.
ATTENTION INSTALLING PERSONNEL
Prior to installation, thoroughly familiarize yourself with this Installation Manual.
Observe all safety warnings. During installation or repair, caution is to be observed.
It is your responsibility to install the product safely and to educate the customer on its safe use.
ARUF**14** / ASPT**14**
1 Important Safety Instructions
The following symbols and labels are used throughout this
manual to indicate immediate or potential safety hazards.
It is the owner’s and installer’s responsibility to read and
comply with all safety information and instructions accom-
panying these symbols. Failure to heed safety information
increases the risk of personal injury, property damage, and/
or product damage.
AIR HANDLERS INSTALLATION & OPERATING INSTRUCTIONS
IO-901
2/2015
Keep this literature in a safe place for future reference.
1 Important Safety Instructions...................................1
2 Shipping Inspection ............................................... 3
2.1 Parts .......................................................... 3
2.2 Handling ...................................................... 3
3 Codes & Regulations ..............................................3
4 Replacement Parts ................................................3
5 Pre-Installation Considerations ................................3
5.1 Preparation .................................................. 3
5.2 System Matches ............................................. 3
5.3 Interconnecting Tubing..................................... 3
5.4 Clearances ................................................... 4
5.5 Horizontal Applications .................................... 4
6 Installation Location .............................................4
6.1 Upflow Installation ......................................... 4
6.2 Horizontal Left Installation ............................... 4
6.3 Downflow..................................................... 4
6.4 Horizontal Right Installation.............................. 5
7 Refrigerant Lines ..................................................7
7.1 Tubing Size ................................................... 7
7.2 Tubing Preparation ......................................... 7
7.3 Special Instructions......................................... 7
7.4 Tubing Connections for Flowrator Model ............... 7
7.5 Tubing Connections for TXV Models ...................... 8
8 Condensate Drain Lines ..........................................8
9 Ductwork............................................................ 9
9.1 Return Ductwork ............................................ 9
10 Return Air Filters ................................................9
11 Electric Heat......................................................9
12 Electrical and Control Wiring ............................... 11
12.1 Building Electrical Service Inspection................ 11
12.2 Wire Sizing ............................................... 11
12.3 Maximum Overcurrent Protection (MOP) ............ 11
12.4 Electrical Connections – Supply Voltage ............. 12
12.4.1 Air Handler Only (Non-Heat Kit Models) ..... 12
12.4.2 Air Handler - Non-Circuit Breaker Heat Kits......12
12.4.3 Air Handler With Circuit Breaker Heat Kit........ 12
12.5 Low Voltage Connections ............................... 12
12.5.1 Thermostats .......................................... 12
12.6 Speed Tap Adjustment .................................. 12
13 Achieving 1.4% Low Leakage Rate ......................... 13
14 Start-Up Procedure............................................ 13
15 Regular Maintenance.......................................... 13
16 Airflow Data .................................................... 14
21 Wiring Diagrams................................................ 20
Contents

2
HIGH VOLTAGE!
Failure to do so may cause property damage,
personal injury or death.
Disconnect ALL power before servicing.
Multiple power sources may be present.
Installation and repair of this unit should be performed
by individuals meeting the requirements of an
“entry level technician” as specified by
theAir-Conditioning, Heating and Refrigeration Institute
(AHRI). Attempting to install or repair this unit without
such background may result in product damage,
personal injury or death.
ONLY , at a minimum,
This product is factory-shipped for use with
208/240/1/60 electrical power supply.
reconfigure this air handler to operate with any other
power supply.
DO NOT
To avoid property damage, personal injury or death
due to electrical shock, this unit MUST have an
electrical ground. The
electrical ground circuit may consist of an
appropriately sized electrical wire connecting the
ground lug in the unit control box to the building
electrical service panel.
Other methods of grounding are permitted if performed
in accordance with the National Electric Code
(NEC)/American National Standards Institute
(ANSI)/National Fire Protection Association (NFPA) 70
and local/state codes. In Canada, electrical grounding
is to be inaccordance with the Canadian Electric Code
(CSA) C22.1.
uninterrupted, unbroken
When installing or servicing this equipment, safety
clothing, including hand and eye protection, is
strongly recommended. If installing in an area that has
special safety requirements (hard hats, etc.), bserve
these requirements. o
Do not connect to or use any device that is not design-
certified by the manufacturer for use with this unit.
Serious property damage, personal injury, reduced
unit performance and/or hazardous conditions may
result from the use of such non-approved devices.
To prevent the risk of property damage, personal
injury, or death, do not store combustible materials or
use gasoline or other flammable liquids or vapors in
the vicinity of this unit.
CO can cause serious illness including permanent brain
damage or death.
Advertencia especial parala instalación de calentadores ómanejadoras
de aire en áreas cerradas como estacionamientos ó cuartos de servicio.
El monóxido de carbono puede causar enfermedades severas
como daño cerebral permanente ó muerte.
Las emisiones de monóxidodecarbono pueden circular através
del aparato cuando se opera en cualquier modo.
RISQUE D'EMPOISONNEMENT AUMONOXYDE DE CARBONE
Cette ventilation est nécessaire pour éviter le dangerd'intoxication
au CO pouvant survenirsiun appareil produisant du monoxyde
de carbone continue de fonctionner au sein de la zone confinée.

3
2 Shipping Inspection
Always transport the unit upright; laying the unit on its side or top during transit may cause equipment damage. The
installer should inspect the product upon receipt for shipping damage and subsequent investigation is the responsibility of
the carrier. The installer must verify the model number, specifications, electrical characteristics, and accessories are
correct prior to installation. The distributor or manufacturer will not accept claims from dealers for transportation
damage or installation of incorrectly shipped units.
2.1 Parts
Also inspect the unit to verify all required components are present and intact. Report any missing components
immediately to the manufacturer or to the distributor. Use only factory authorized replacement parts (see Section
5). Make sure to include the full product model number and serial number when reporting and/or obtaining service
parts.
2.2 Handling
Use caution when transporting/carrying the unit. Do not move unit using shipping straps. Do not carry unit with hooks
or sharp objects. The preferred method of carrying the unit after arrival at the job site is to carry via a two-wheel
hand truck from the back or sides or via hand by carrying at the cabinet corners.
3 Codes & Regulations
This product is designed and manufactured to comply with applicable national codes. Installation in accordance with such
codes and/or prevailing local codes/regulations is the responsibility of the installer. The manufacturer assumes no
responsibility for equipment installed in violation of any codes or regulations.
The United States Environmental Protection Agency (EPA) has issued various regulations regarding the introduction
and disposal of refrigerants. Failure to follow these regulations may harm the environment and can lead to the
imposition of substantial fines. Should you have any questions please contact the local office of the EPA and/or refer to
EPA’s website www.epa.gov.
4 Replacement Parts
When reporting shortages or damages, or ordering repair parts, give the complete product model and serial numbers as
stamped on the product. Replacement parts for this product are available through your contractor or local distributor.
For the location of your nearest distributor consult the white business pages, the yellow page section of the local tele-
phone book or contact: CONSUMER AFFAIRS
GOODMAN MANUFACTURING COMPANY, L.P.
7401 SECURITY WAY
HOUSTON, TEXAS 77040
[phone]
5 Pre-Installation Considerations
5.1 Preparation
Keep this document with the unit. Carefully read all instructions for the installation prior to installing product. Make
sure each step or procedure is understood and any special considerations are taken into account before starting
installation. Assemble all tools, hardware and supplies needed to complete the installation. Some items may need to
be purchased locally. Make sure everything needed to install the product is on hand before starting.
5.2 System Matches
The entire system (combination of indoor and outdoor sections) must be manufacturer approved and Air-Condition-
ing, Heating, and Refrigeration Institute (AHRI) listed. NOTE: Installation of unmatched systems is not permitted and
will void the product warranty.
5.3 Interconnecting Tubing
Give special consideration to minimize the length of refrigerant tubing when installing air handlers. Refer to Remote
Cooling/Heat Pump Service Manual RS6200006, and TP-107 Long Line Set Application R-410A for tubing guidelines. If
possible, allow adequate length of tubing such that the coil may be removed (for inspection or cleaning services) from
the cabinet without disconnecting the tubing.

4
5.4 Clearances
The unit clearance from a combustible surface may be 0". However, service clearance must take precedence. A
minimum of 24" in front of the unit for service clearance is required. Additional clearance on one side or top will be
required for electrical wiring connections. Consult all appropriate regulatory codes prior to determining final clear-
ances. When installing this unit in an area that may become wet (such as crawl spaces), elevate the unit with a
sturdy, non-porous material. In installations that may lead to physical damage (i.e. a garage) it is advised to install
a protective barrier to prevent such damage. Always install units such that a positive slope in condensate line (1/4"
per foot) is allowed.
5.5 Horizontal Applications
If installed above a finished living space, a secondary drain pan (as required by many building codes), must be
installed under the entire unit and its condensate drain line must be routed to a location such that the user will see
the condensate discharge.
6 Installation Location
NOTE: These air handlers are designed for indoor installation
only.
The ARUF**14** and ASPT**14** product lines may be installed in
one of the upflow, downflow, horizontal left or horizontal right
orientations as shown in Figures 2, 3, 4 and 5. The unit may be
installed in upflow or horizontal left orientation as shipped (re-
fer to specific sections for more information).
Minor field modifications are necessary to convert to downflow
or horizontal right as indicated in below sections.
Side Drain Pan Removal: Refer to Figure 1, remove the two (2)
screws that secure the drip shield support brackets to the
condensate collectors (front and back). Unsnap the side drain
panfromvertical (bottom)drain pan usinga screw driveror any
smalllever.Thesidedrainpananddripshieldbracketsmaynow
be removed. The bottom left drain connection is the primary
drain for this application and condensate drain line must be
attached to this drain connection. The bottom right drain
connection is for the secondary drain line (if used).
6.1 Upflow Installation
No field modifications are mandatory however to obtain maxi-
mum efficiency, the horizontal side drain pan & extension must
be removed.
6.2 Horizontal Left Installation
No field modifications are permissible for this application.
The bottom left drain connection is the primary drain for this application and condensate drain line must be attached to
this drain connection. The bottom right drain connection is
for the secondary drain line (if used).
6.3 Downflow
No field modifications are mandatory however to obtain
maximum efficiency, the horizontal side drainpan & exten-
sion must be removed.
IMPORTANT NOTE: To prevent coil pan “sweating” in the
downflow application, a downflow kit (DFK) is available
through your local distributor. The DFK is not supplied with
the air handler and is required by the manufacturer on all
downflow installations. See Table 1 for the correct DFK and
follow the instructions provided for installation.
DRIP SHIELD REMOVAL
Figure 1
DOWNFLOW KIT
Table 1
DFK-B DFK-C DFK-D
DOWNFLOW KIT DOWNFLOW KIT DOWNFLOW KIT
ARUF25B14** ARUF37C14** ARUF37D14**
ARUF29B14** ARUF43C14** ARUF43D14**
ARUF31B14** ARUF49C14** ARUF47D14**
ARUF49D14**
ARUF61D14**
ASPT61D14**
MODEL LIST FOR DOWNFLOW KIT

5
6.4 Horizontal Right Installation
Side drainpan extension must be removed for all models except : ARUF47D14**, ARUF61D14**, ASPT61D14**.
Refer to Figure 6 and 7 for the location of the components referenced in the following steps.
1. Before inverting the air handler, remove blower access panel and coil access panel. The coil access panel and tubing
panel may remain screwed together during this procedure. Remove and retain the seven (7) screws securing the coil
access panel to the cabinet and the six (6) screws securing the blower access panel to the cabinet.
2. Slide the coil assembly out from the cabinet. Use the drain pan to pull the assembly from the cabinet.
NOTE: DO NOT USE MANIFOLDS OR FLOWRATOR TO PULL THE COIL ASSEMBLY OUT. FAILURE TO DO SO MAY
RESULT IN BRAZE JOINT DAMAGE AND LEAKS.
3. Removal of the center support is required on units
with 21" wide cabinet. Remove and retain the two
(2) screws that secure the center support to the cabi-
net. Remove the center support.
4. Using the drain pan to hold the coil assembly, slide
the coil assembly back into the cabinet on the
downflow brackets as shown in Figure 8.
5. Re-install the center support (if removed) using the
two (2) screws removed in Step 4.
6. Re-install the access panels removed in Step 1 as
shown in Figure 9.
7. The bottom right drain connection is the primary drain
for this application and condensate drain line must
be attached to this drain connection. The bottom left
drain connection is for the secondary drain line (if
used). Install the PVC plug that was removed from
the side drain pan primary connection and install it
on the vertical primary connection.
NOTE: If removing only the coil access panel from the
unit, the filter access panel must be removed first. Fail-
ure to do so will result in panel damage.
DOWNFLOW
Figure 3
UPFLOW
Figure 2
HORIZONTAL LEFT
Figure 4
HORIZONTAL RIGHT
Figure 5

6
Blower
Access
Panel
Secondary
Drain Port for
Upflow/Downflow Application
Secondary
Drain Port
for
Horizontal
Application Tubing
Panel
EXTERNAL PART TERMINOLOGY
Figure 7
INTERNAL PART TERMINOLOGY
Figure 6
ACCESS PANEL CONFIGURATION FOR DOWNFLOW
OR HORIZONTAL RIGHT
Figure 9
Coil Slides
on the downflow bracket
IMPORTANT NOTE:
Ensure coil slides on the rails along the groove provided on the drain pan side
walls. Failure to do so will result in improper condensate drainage.
COIL INSTALLATION FOR DOWNFLOW
Figure 8

7
7 Refrigerant Lines
NOTE: Refrigerant tubing must be routed to allow adequate
access for servicing and maintenance of the unit.
Do not install the air handler in a location that violates
the instructions provided with the condenser. If the unit
is located in an unconditioned area with high ambient
temperature and/or high humidity, the air handler may
be subject to nuisance sweating of the casing. On these
installations, a wrap of 2" fiberglass insulation with a vapor
barrier is recommended.
7.1 Tubing Size
For the correct tubing size, follow the specification
for the condenser/heat pump.
7.2 Tubing Preparation
All cut ends are to be round, burr free, and clean.
Failure to follow this practice increases the chances
for refrigerant leaks. The suction line is spun closed
and requires tubing cutters to remove the closed end.
NOTE: To prevent possible damage to the tubing joints, do not handle coil assembly with manifold or flowrator tubes.
Always use clean gloves when handling coil assemblies.
7.3 Special Instructions
Units without a factory installed TXV come equipped with a flowrator piston for refrigerant expansion. For most
installations with matching applications, no change to the flowrator piston is required. However, in mix-matched
applications, a flowrator piston change may be required. See the piston kit chart (provided in the literature packet)
or consult your local distributor for details regarding mix-matched flowrator piston sizing. If the mix-match appli-
cation requires a different flowrator piston size, change the flowrator piston in the flowrator body on the indoor
coil before installing the coil and use the procedure in section 8.4.
NOTE: The use of a heat shield is strongly recommended when brazing to avoid burning the serial plate or the finish
of the unit. Heat trap or wet rags must be used to protect heat sensitive components such as service valves and TXV
valves sensing bulb.
7.4 Tubing Connections for Flowrator Model
1. Loosen the 13/16 nut 1 TURN ONLY to allow high pressure tracer
gas to escape. No gas indicates a possible leak.
2. After the gas has been expelled, remove the nut and discard the
black or brass cap plastic seal.
3. Remove the flowrator piston to verify it is the correct size for
the outdoor unit being installed and then replace the piston
(changing size, if needed). See piston kit chart in the literature
kit for appropriate piston size.
4. Remove the spin closure on the suction line using a tube cutter
and deburr the tube.
5. Insert the suction line into the connection, slide the insulation and the rubber grommet at least 18" away from the
braze joint.
6. Remove the tailpiece clamped to the exterior of the cabinet or in the literature kit packet and slide the 13/16 nut
into place.
7. Braze tailpiece to the line set liquid tube and braze suction line connection. Quench all brazed joints with a damp
rag upon completion of brazing. Do not allow water to enter the inside of the tubing.
This product is factory-shipped with R410A and dry
nitrogen mixture gas under pressure. Use appropriate
service tools and follow these instructions to prevent
injury.
A quenching cloth is strongly recommended to prevent
scorching or marring of the equipment finish when
brazing close to the painted surfaces. Use brazing
alloy of 5% minimum silver content.
Applying too much heat to any tubecan melt the tube. Torch
heat required to braze tubes of various sizes must be
proportional to the size of the tube. Service personnel must
use the appropriate heat level for the size of the tube being
brazed.
CAUTION
RUBBER
GROMMET
SUCTION LINE
WITH SPIN CLOSURE
SUCTION SPUN END AND GROMMET
Figure 10

8
Excessive torque can cause orifices to stick. Use the
proper torque settings when tightening orifices.
WHITE
TEFLON SEAL PISTON
TAILPIECE
13/16” NUT
PLASTIC or BRASS CAP
TAILPIECE JOINT
Figure 11
8. AFTER THE TAILPIECE HAS COOLED, confirm position of the white
Teflon®seal and hand tighten the 13/16 nut.
9. Torque the 13/16 nut to 7-25 ft-lbs. or tighten 1/6 turn.
7.5 Tubing Connections for TXV Models
TXV models come with factory installed TXV with the bulb pre-
installed on the vapor tube.
1. Remove refrigerant tubing panel or coil (lower) access panel.
2. Remove access valve fitting cap and depress the valve stem in access fitting to release pressure. No pressure indi-
cates possible leak.
3. Replace the refrigerant tubing panel.
4. Remove the spin closure on both the liquid and suction tubes using a tubing cutter.
5. Insert liquid line set into liquid tube expansion and slide grommet about 18" away from braze joint.
6. Insert suction line set into suction tube expansion and slide insulation and grommet about 18" away from braze joint.
7. Braze joints. Quench all brazed joints with water or a wet rag upon completion of brazing.
8 Condensate Drain Lines
The coil drain pan has a primary and a secondary drain with 3/4" NPT female connections. The connectors required are 3/
4" NPT male, either PVC or metal pipe, and should be hand tightened to a torque of no more than 37 in-lbs. to prevent
damage to the drain pan connection. An insertion depth of approximately 3/8” to 1/2” (3-5 turns) should be expected at
this torque.
1. Ensure drain pan hole is not obstructed.
2. To prevent potential sweating and dripping on to finished space, it may be necessary to insulate the condensate drain
line located inside the building. Use Armaflex®or similar material.
A secondary condensate drain connection has been provided for areas where the building codes require it. Pitch all drain
lines a minimum of 1/4" per foot to provide free drainage. Provide required support to the drain line to prevent bowing.
If the secondary drain line is required, run the line separately
from the primary drain and end it where condensate discharge
can be easily seen.
NOTE: Water coming from secondary line means the coil pri-
mary drain is plugged and needs immediate attention.
Insulate drain lines located inside the building or above a fin-
ished living space to prevent sweating. Install a condensate
trap to ensure proper drainage.
NOTE: When units are installed above ceilings, or in other locations
where damage from condensate overflow may occur, it is MANDATORY
to install a field fabricated auxiliary drain pan under the coil cabinet
enclosure.
The installation must include a “P” style trap that is located as close as
is practical to the evaporator coil. See Figure 12 for details of a typical
condensate line “P” trap.
NOTE: Trapped lines are required by many local codes. In the absence
of any prevailing local codes, please refer to the requirements listed in
the Uniform Mechanical Building Code.
CAUTION
If secondary drain is not installed, the secondary
access must be plugged.
Air Handler
3" MIN.
POSITIVE LIQUID
SEAL REQUIRED
AT TRAP
Drain
Connection
2" MIN.
Figure 12

9
Do not operate this product without all the ductwork
attached.
A drain trap in a draw-through application prevents air from being drawn back through the drain line during fan opera-
tion thus preventing condensate from draining, and if connected to a sewer line to prevent sewer gases from being drawn
into the airstream during blower operation.
Field experience has shown condensate drain traps with an open vertical Tee between the air handler and the condensate
drain trap can improve condensate drainage in some applications, but may cause excessive air discharge out of the open
Tee. The manufacturer does not prohibit this type of drain but we also do not recommend it due to the resulting air
leakage. Regardless of the condensate drain design used, it is the installer’s responsibility to ensure the condensate drain
system is of sufficient design to ensure proper condensate removal from the coil drain pan.
Use of a condensate removal pump is permitted when necessary. This condensate pump should have provisions for
shutting off the control voltage should a blocked drain occur. A trap must be installed between the unit and the conden-
sate pump.
IMPORTANT NOTE: The evaporator coil is fabricated with oils that may dissolve styrofoam and certain types of plastics.
Therefore, a removal pump or float switch must not contain any of these materials.
Tip: Priming the “P” trap may avoid improper draining at the initial installation and at the beginning of the cooling
season.
9 Ductwork
This air handler is designed for a complete supply and re-
turn ductwork system.
To ensure correct system performance, the ductwork is to
be sized to accommodate 350-450 CFM per ton of cooling
with the static pressure not to exceed 0.5" in w.c. Refer to
ACCA Manual D, Manual S and Manual RS for information on duct sizing and application. Flame retardant ductwork is to
be used and sealed to the unit in a manner that will prevent leakage.
NOTE: A downflow application with electric heat must have an L-shaped sheet metal supply duct without any outlets or
registers located directly below the heater.
9.1 Return Ductwork
DO NOT LOCATE THE RETURN DUCTWORK IN AN AREA THAT CAN INTRODUCE TOXIC, OR OBJECTIONABLE FUMES/
ODORS INTO THE DUCTWORK. The return ductwork is to be connected to the air handler bottom (upflow configu-
ration).
10 Return Air Filters
Each installation must include a return air filter. This filtering may be performed at the air handler using the factory
filter rails or externally such as a return air filter grille. When using the factory filter rails, a nominal 16x20x1”, 20x20x1”
or 24x20x1” (actual dimension must be less than 23-½”x20”) filter can be installed on a B, C and D cabinet respectively
(the cabinet size is the seventh letter of the model number).
11 Electric Heat
Refer to the installation manual provided with the electric heat kit for the correct installation procedure. All electric
heat must be field installed. If installing this option, the ONLY heat kits that are permitted to be used are the HKS series.
Refer to the air handler unit’s Serial and Rating plate or the HKS specification sheets to determine the heat kits compat-
ible with a given air handler. No other accessory heat kit besides the HKS series may be installed in these air handlers.
The heating mode temperature rise is dependent upon the system airflow, the supply voltage, and the heat kit size (kW)
selected. Use data provided in Tables 2, 3 and 4 to determine the temperature rise (°F).
NOTE: For installations not indicated above the following formula is to be used:
TR = (kW x 3412) x (Voltage Correction) / (1.08XCFM)
Where: TR = Temperature Rise
kW = Heater Kit Actual kW
3412 = Btu per kW
VC* = .96 (230 Supply Volts)
= .92 (220 Supply Volts)
= .87 (208 Supply Volts)
1.08 = Constant
CFM = Measured Airflow
*VC (Voltage Correction)

10
NOTE: The Temperature Rise Tables can also be used to estimate the air handler airflow delivery. When using these
tables for this purpose set the room thermostat to maximum heat and allow the system to reach steady state conditions.
Insert two thermometers, one in the return air and one in the supply air. The temperature rise is the supply air temperature
minus the room air temperature. Using the temperature rise calculated, CFM can be estimated from the TR formula
above. See Technical Manual and/or Service Manual for more information.
230/1/60 SUPPLY VOLTAGE - TEMP. RISE °F
Table 2
3568101519/2025
800 1219233137
1000 9 1519253044
1200 8 12152125374962
1400 7 11131821324253
1600 6 9 12 15 19 28 37 46
1800 5 8 10 14 16 25 33 41
2000 5 7 9 12 15 22 30 37
CFM HEAT KIT NOMINAL kW
220/1/60 SUPPLY VOLTAGE - TEMP. RISE °F
Table 3
3568101519/2025
800 1118223035
1000 9 14 18 24 28 42
1200 7 12 15 20 24 35 47 59
1400 6 10 13 17 20 30 40 51
1600 6 9 111518273544
1800 5 8 101316243139
2000 4 7 9 12 14 21 28 35
CFM HEAT KIT NOMINAL kW
208/1/60 SUPPLY VOLTAGE - TEMP. RISE °F
Table 4
3568101519/2025
800 1017212833
1000 8 13 17 22 27 40
1200 7 11 14 19 22 33 45 56
1400 6 10 12 16 19 29 38 48
1600 5 8 101417253342
1800 5 7 9 12 15 22 30 37
2000 4 7 8 11 13 20 27 33
CFM HEAT KIT NOMINAL kW
35681015192025
ARUF25B14 715 715 715 715 950
ARUF29B14 715 715 715 715 950
ARUF31B14 715 715 715 715 875 875
ARUF37C14 1170 1170 1170 1170 1345 1345
ARUF43C14 1170 1170 1170 1170 1345 1345
ARUF49C14 1170 1170 1170 1170 1340 1430
ARUF37D14 1170 1170 1170 1170 1345 1345
ARUF43D14 1170 1170 1170 1170 1345 1345
ARUF47D14 1170 1170 1170 1170 1345 1345
ARUF49D14 1240 1240 1240 1240 1520 1520
ARUF61D14 1590 1590 1590 1590 1715 1715 1715
ASPT61D14 1590 1590 1590 1590 1715 1715 1715
MODEL HEATER KIT (KW)
MINIMUM CFM REQUIRED FOR HEATER KITS
Table 5

11
12 Electrical and Control Wiring
IMPORTANT: All routing of electrical wiring must be made
through provided electrical knockouts. Do not cut, punc-
ture or alter the cabinet for electrical wiring.
12.1 Building Electrical Service Inspection
This unit is designed for single-phase electrical supply only. DO NOT OPERATE ON A THREE-PHASE POWER SUPPLY.
Measure the power supply to the unit. The supply voltage must be measured and be in agreement with the unit
nameplate power requirements and within the range shown.
12.2 Wire Sizing
Wire size is important to the operation of your equip-
ment. Use the following check list when selecting the
appropriate wire size for your unit.
•Wire used must carry the Minimum Circuit Ampac-
ity (MCA) listed on the unit’s Series and Rating Plate.
• Refer to the NEC (USA) or CSA (Canada) for wire siz-
ing. The unit MCA for the air handler and the op-
tional electric heat kit can be found on the unit Se-
ries and Rating Plate.
•Wire must be sized to allow no more than a 2% volt-
age drop from the building breaker/fuse panel to
the unit.
• Wires with different insulation temperature rating
have varying ampacities - be sure to check the tem-
perature rating used.
Refer to the latest edition of the National Electric
Code or in Canada the Canadian Electric Code when
determining the correct wire size.
12.3 Maximum Overcurrent Protection (MOP)
Every installation must include an NEC (USA) or CEC
(Canada) approved overcurrent protection device.
Also, check with local or state codes for any special
regional requirements.
Protection can be in the form of fusing or HACR style
circuit breakers. The Series and Rating Plate pro-
vides the maximum overcurrent device permissible.
NOTE: Fuses or circuit breakers are to be sized larger than the equipment MCA but not to exceed the MOP.
ELECTRICAL VOLTAGE
Table 6
Nominal Input Minimum Voltage Maximum Voltage
208-240 197 253
FIRE HAZARD!
To avoid the risk of property damage, personal injury
or fire, use only copper conductors.
HIGH VOLTAGE!
Failure to do so may cause property damage,
personal injury or death.
Disconnect ALL power before servicing.
Multiple power sources may be present.
HIGH VOLTAGE!
To avoid property damage, personal injury or death
due to electrical shock, this unit MUST have an
electrical ground. The
electrical ground circuit may consist of an
appropriately sized electrical wire connecting the
ground lug in the unit control box to the building
electrical service panel.
Other methods of grounding are permitted if performed
in accordance with the National Electric Code
(NEC)/AmericanNational Standards Institute
(ANSI)/National Fire Protection Association (NFPA) 70
and local/state codes. In Canada, electrical grounding
is to be in accordance with the Canadian Electric Code
(CSA) C22.1.
uninterrupted, unbroken

12
12.4 Electrical Connections – Supply Voltage
IMPORTANT NOTE: USE COPPER CONDUCTORS ONLY.
Knockouts are provided on the air handler top panel and
sides of the cabinet to allow for the entry of the supply
voltage conductors, as shown in Figure 13. If the knockouts
on the cabinet sides are used for electrical conduit, an
adapter ring must be used in order to meet UL1995 safety
requirements. An NEC or CEC approved strain relief is to be
used at this entry point. Some codes/municipalities re-
quire the supply wire to be enclosed in conduit. Consult
your local codes.
12.4.1 Air Handler Only (Non-Heat Kit Models)
The building supply connects to the stripped black and red
wires contained in the air handler electrical compartment
cavity. A ground screw is also contained in this area. At-
tach the Supply wires to the air handler conductors as shown in the unit wiring diagram using appropriately sized
solderless connectors or other NEC or CEC approved means.
12.4.2 Air Handler - Non-Circuit Breaker Heat Kits
A terminal block is provided with the HKS kit to attach the power supply and air handler connections. Follow the
HKS Installation Manual and wiring diagram for complete wiring details.
12.4.3 Air Handler With Circuit Breaker Heat Kit
The air handler has a plastic cover on the upper access panel that will require either one or both sections to be
removed to allow the heat kit circuit breaker(s) to be installed. The circuit breakers have lugs for power supply
connection. See the HKS Installation Instructions for further details.
12.5 Low Voltage Connections
Several combinations of low voltage schemes are possible, depending on the presence of a heat kit and whether the
heat kit is single-stage or multi-stage, whether the outdoor section is an air conditioner or heat pump, and whether
the outdoor section is single-stage or two-stage. The 24V-control voltage connects the air handler to the room
thermostat and condenser. Low voltage wiring must be copper conductors. A minimum of 18AWG must be used for
installations up to 100 feet. Low voltage wiring must be connected through the top of the cabinet or either side.
See the “Thermostat Wiring” section of this manual for typical low voltage wiring connections.
12.5.1 Thermostats
Second-stage heat can be accomplished by a multi-stage heating thermostat or the addition of an outdoor thermo-
stat as shown in wiring schematics on pages 14 and 15. Follow the thermostat manufacturer’s instructions for
installation.
12.6 Speed Tap Adjustment
ARUF**14** air handlers have multi-speed PSC motors. The color of the wire coming from the motor to the “COM”
terminal on the control board defines at which speed the motor will operate. Black wire is high speed, blue wire is
medium speed and red wire is low speed. To change speeds, remove the wire attached to the “COM” terminal on
the control board, and swap it with the wire (on terminal “M1” or “M2”) with the color that will give the desired
speed.
ASPT**14** air handlers feature energy efficient blower motors. The motors run at a constant torque with very low
power consumption and are energized by 24 VAC. Adjust the CFM by changing the 24 VAC leads to the desired speed
tap on the terminal block. The ASPT blower motor speeds are programmed to deliver adequate airflow at rated
external static pressure and with 60 second off time delay. For details, refer to the specification sheet applicable
to your model.
NOTE: In some models, not all speed taps are allowable for certain electric heat applications. Refer to Table 5 for
minimum speed.
Side of
Cabinet
Top of
Cabinet
KNOCK-OUT FOR ELECTRICAL CONNECTIONS
Figure 13

13
13 Achieving 1.4% Low Leakage Rate
Ensure all the gaskets remain intact on all surfaces as shipped with the unit. These surfaces are areas between the upper
tie plate and blower access panel, blower access and coil access panels, and between the coil access and filter access
panels. Ensure upon installation, that the plastic breaker cover is sitting flush on the blower access panel and all access
panels are flush with each other and the cabinet. With these requirements satisfied, the unit achieves less than 1.4%
airflow leakage when tested in accordance with ASHRAE Standard 193.
14 Start-Up Procedure
• Prior to start-up, ensure that all electrical wires are properly sized and all connections are properly tightened.
• All panels must be in place and secured. For Air Tight application, gasket must be positioned at prescribed loca-
tions to achieve 1.4% leakage.
• Tubing must be leak free.
• Condensate line must be trapped and pitched to allow for drainage.
• Low voltage wiring is properly connected.
• Auxiliary drain is installed when necessary and pitched to allow for drainage.
• Unit is protected from vehicular or other physical damage.
• Return air is not obtained from, nor are there any return air duct joints that are unsealed in, areas where there may
be objectionable odors, flammable vapors or products of combustion such as carbon monoxide (CO), which may
cause serious personal injury or death.
15 Regular Maintenance
The only item required to be maintained on a regular basis
by the user is the circulating air filter(s). Filter should be
cleaned or replaced regularly, typically once per month. A
certified service technician must perform all other services.
IMPORTANT NOTE: If thumb screws are used to access the
filter, ensure the washer installed on the screw behind the
access panel remains in place after re-installation.
HIGH VOLTAGE!
Disconnect ALL power before servicing or
installing this unit. Multiple power sources may
be present. Failure to do so may cause property
damage, personal injury or death.

14
AIRFLOW DATA (CFM)
Table 7
16 Airflow Data
0.1 0.2 0.3 0.4 0.5 0.6 0.7
LO
W
650 620 595 540 490 420 275
MED 885 865 825 815 750 690 560
HIGH 1255 1225 113
0
109
0
965 925 800
LO
W
650 620 595 540 490 420 275
MED 885 865 825 815 750 690 560
HIGH 1255 1225 113
0
109
0
965 925 800
LO
W
660 625 595 560 500 430 330
MED 930 905 865 820 765 700 590
HIGH 1235 1185 113
0
106
0
990 910 825
LO
W
1120 1085 104
0
100
0
940 875 800
MED 1425 1385 1345 1285 1220 1145 1060
HIGH 1625 1575 152
0
146
0
137512951200
LO
W
1120 1085 104
0
100
0
940 875 800
MED 1425 1385 1345 1285 1220 1145 1060
HIGH 1625 1575 152
0
146
0
137512951200
LO
W
1295 1255 1225 1175 1120 1055 970
MED 1535 1485 142
0
137
0
129512151130
HIGH 1755 168
0
159
0
1515 1425 1340 1250
LO
W
1155 1115 107
0
1015 955 895 840
MED 1505 147
0
143
0
1375 1300 1210 1105
HIGH 1785 1735 168
0
1625 1555 1440 1330
LO
W
1410 136
0
129
0
121
0
1120 1010 920
MED 1610 154
0
147
0
139
0
130011901060
HIGH 1900 183
0
174
0
1645 1540 1420 1280
LO
W
1420 137
0
131
0
124
0
1125 1045 960
MED 1625 1585 1515 1435 1350 1235 1095
HIGH 1930 189
0
182
0
1735 1635 1505 1355
LO
W
1410 136
0
129
0
121
0
1120 1010 920
MED 1610 154
0
147
0
139
0
130011901060
HIGH 1900 183
0
174
0
1645 1540 1420 1280
LO
W
1530 150
0
146
0
1405 1350 1280 1155
MED 1950 1885 183
0
1785 1745 1670 1595
HIGH 2235 217
0
210
0
203
0
196519151825
T1 1545 1495 144
0
139
0
133512601180
T2 1745 1695 1625 1575 1525 1475 1400
T3 1905 1855 1815 177
0
172516701635
T4 2155 2105 209
0
2045 2000 1970 1935
T5 2340 231
0
2265 222
0
218521652120
Notes
ARUF49D14
ARUF61D14
ASPT61D14
1.Airflowdata indicatedis at230Vwithoutairfilterin place.
2.Thechartisforinformationonly.Forsatisfactoryoperation,externalstaticpressuremustnotexceedvalueshownon
3. Use the CFMadjustment factors of0.98 for horizontal left and 0.96 forhorizontal right& downfloworientations
ARUF37C14
ARUF43C14
ARUF49C14
ARUF37D14
ARUF43D14
ARUF47D14
Model Blower
Speed
Static Pressure (in w.c) Airflow (CFM)
ARUF25B14
ARUF29B14
ARUF31B14

15
Air Handler Low Voltage Connections
The following composite wiring diagrams detail various configurations in which the air handlers can be used. Examples
include single-stage cooling and heat pump with single or two-stage electric heating. All these configurations can be
applied with convenient connections to outdoor thermostat applications.
The following sections are detailed:
• Single-Stage Cooling
• Heat Pump
Each diagram details the connections between room thermostat and the air handlers, and the connections between the
air handlers and the Condensing Unit (or Heat Pump) with optional connections to Outdoor Thermostats. For each
configuration, refer to the explanation of the proper jumper(s) to remove for the corresponding blower speed that will
result in the programmed fixed speed ECM motor.
IMPORTANT: WHEN MATCHING THE ASPT AIR HANDLERS TO A SINGLE SPEED COOLING OR HEAT PUMP
UNIT, REMEMBER TO CONNECT “Y” FROM THE THERMOSTAT TO THE “Y2” ON THE LOW VOLTAGE
TERMINAL BOARD.
An equivalent thermostat can be used in place of the manufacturer’s thermostat part number.
NOTE: Some models feature low voltage wires and do not include a terminal block. For those applications use the
corresponding colored wires.
NOTES:
1) OUTDOOR THERMOSTAT (OT-1) SHOULD BE THE FIRST
TO CLOSE AND THE LAST TO OPEN.
2) JUMPER W1 AND W2 TOGETHER IF OT-2 IS NOT USED.
3) REMOVE WIRE WHEN USING OUTDOOR THERMOSTAT.
NOMENCLATURE:
OT - OUTDOOR THERMOSTAT (OPTIONAL)
EHR - EMERGENCY HEAT RELAY (OPTIONAL)
COLOR CODES
RD - RED
YL - YELLOW
BL - BLUE
BR - BROWN
OR - ORANGE
WH - WHITE
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
COOLING UNIT WITH OPTIONAL HEAT KITS OF 10 kW AND BELOW
GR
C
W1
YW
W2
Y2
Y1
O
G
R
TB
YL
BL TO CONDENSING UNIT
24V CONNECTION BL
YL
YL
WH
GR
RD
#18 GA. 4 WIRES WITH COOLING
3 WIRES WITHOUT
AIR HANDLER
HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING.
MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO
MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
WARNING

16
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING.
MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO
MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
WARNING
NOTES:
1) OUTDOOR THERMOSTAT (OT-1) SHOULD BE THE FIRST
TO CLOSE AND THE LAST TO OPEN.
2) JUMPER W1 AND W2 TOGETHER IF OT-2 IS NOT USED.
3) REMOVE WIRE WHEN USING OUTDOOR THERMOSTAT.
NOMENCLATURE:
OT - OUTDOOR THERMOSTAT (OPTIONAL)
EHR - EMERGENCY HEAT RELAY (OPTIONAL)
COLOR CODES
RD - RED
YL - YELLOW
BL - BLUE
BR - BROWN
OR - ORANGE
WH - WHITE
YGW
W2
R
COOLING UNIT WITH OPTIONAL HEAT KITS OF 15 kW AND ABOVE
AND ROOM THERMOSTAT WITH TWO STAGES OF HEAT
C
W1
W2
Y2
Y1
O
G
R
TB
YL
BL CONDENSING UNIT
24V CONNECTION BL
YL
GR
RD
#18 GA. 5 WIRES WITH COOLING
4 WIRES WITHOUT
WH
YL
BR BR
BR YL
GC R
HEAT PUMP UNIT WITH OPTIONAL HEAT KITS OF 10 kW AND BELOW
C
W1
W2
Y2
Y1
O
G
R
TB
#18 GA. 7 WIRE
OYC
W2
R Y O
W2
E
RD
BR
GR
BR
BL
WH
OR
YL
YL
YL
YL
RD
BL
WH
WH
OR
BL BL
WH
AIR HANDLER
AIR HANDLER

17
HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING.
MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO
MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
WARNING
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
NOTES:
1) OUTDOOR THERMOSTAT (OT-1) SHOULD BE THE FIRST
TO CLOSE AND THE LAST TO OPEN.
2) JUMPER W1 AND W2 TOGETHER IF OT-2 IS NOT USED.
3) REMOVE WIRE WHEN USING OUTDOOR THERMOSTAT.
NOMENCLATURE:
OT - OUTDOOR THERMOSTAT (OPTIONAL)
EHR - EMERGENCY HEAT RELAY (OPTIONAL)
COLOR CODES
RD - RED
YL - YELLOW
BL - BLUE
BR - BROWN
OR - ORANGE
WH - WHITE
GC R
HEAT PUMP UNIT WITH OPTIONAL HEAT KITS OF 15 kW AND ABOVE
C
W1
W2
Y2
Y1
O
G
R
TB
#18 GA. 7 WIRE
OYC
W2
R Y O
W2
E
RD
GR
BL
OR
YL
YL
BL
OR
WH
BR
WH
BL
WH
WH RD
BR
RD
WH
GR
YL
OR
OR
RD
OR
AIR HANDLER

18
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING.
MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO
MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
WARNING
120/240VA
C
TSTA
T
OPTIONAL
SPEEDU
P
24VAC
SYSTEM
TRANSFORME
R
C
SPEEDU
P
XFM
R
-
C
XFM
R
-
R
R
B13707-35
WIRING DIAGRA
M
M1
PARK TERMINA
L
K1
K1
FORUSEWITH
NEUTRA
L
G
HEATKI
T
MOTO
R
The Electronic Blower Time Delay Relay provides power to the blower motor with a delay of 7
seconds after 24VAC is applied to “G”. After 24VAC is removed from “G”, the blower motor
output is de-energized after a delay of 65 seconds.
Normal Time Delays 60Hz 50Hz
Turn On Delay 7.0 SEC.±1% 8.4 SEC. .±1%
Turn Off Delay 65.0 SEC.±1% 78.0 SEC. .±1%
Field test mode: Shorting the “speedup” quick connect to “C” decrease times as follows:
Speedup Times 60Hz 50Hz
Turn On Delay 3.0 SEC.±1% 3.6 SEC. .±1%
Turn Off Delay 5.0 SEC.±1% 6.0 SEC. .±1%
Field test mode is cancelled when the “speedup” quick connect to “C” short is removed.
ELECTRONIC BLOWER TIME DELAY RELAY

19
THIS PAGE LEFT INTENTIONALLY BLANK

20
Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.
HIGH VOLTAGE! DISCONNECT ALL POWER BEFORE SERVICING.
MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO
MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
WARNING
ARUF**14**
21 Wiring Diagrams
USE COPPER WIRE
SPEEDUP
COPPER POWER SUPPLY
(SEE RATING PLATE)
EQUIPMENT GROUND
BL BL
SEE
NOTE 3
BK
M1
BR
BR
RC
EM
RD
BL
BK
RD PU
WH
EBTDR
SR
BL
G
RD XFMR-R
XFMR-C
C
R
RD
GR
SEE NOTES 2 & 6
BL RD GR WH BR
5
NO
COM
NC
K1
K1
PU
PU
RD
RD C
BK
BR
PLF
BK
1
RD PU
23
240
24V 4
123
TR
RD
SEE
NOTE 4
BL BR
45
WH
6789
PLM
GRD
1
BK
23
RD
L2
L1
45678 9
0140A00242-A
PLM
PLF
TR
FACTORY WIRING
FIELD WIRING
NOTES:
TIME DELAY RELAY
STRAIN RELIEF
EVAPORATOR MOTOR
ELECTRONIC BLOWER
RUN CAPACITOR
SR
EM
EBTDR
RC
BK
RD
BL
YL
BLUE
BLACK
RED
YELLOW
COMPONENT CODE
BROWN
PURPLE
GREEN
PU
BR
GR
FEMALE PLUG CONNECTOR
MALE PLUG CONNECTOR
TRANSFORMER
HIGH VOLTAGE
LOW VOLTAGE
HIGH VOLTAGE
LOW VOLTAGE
PLF
32
COLOR CODE
RD
TR
WH
6
BR
5PLF
4
424V 5
SEE NOTE 1
123
RC
HI
EM
GR
WIRING CODE
BL
EBTDR
LO COM
NC
M1
EBTDR
NO
208/240
VOLTS
1
1PLF
PLM
L1
PLM
2
L2
(M2)
PU
RC
(M1) BK
BL MEDIUM
3 SPEED
BR
HIGH
EM
(COM) RD LOW
IF REPLACEMENT OF THE ORIGINAL WIRES
SUPPLIED WITH THIS ASSEMBLY IS NECESSARY
USE WIRE THAT CONFORMS TO THE
NATIONAL ELECTRIC CODE.
M2
PU
(TR 1)
M2
RGC
EBTDR
SEE NOTE 1
FL FUSE LINK
TL THERMAL LIMIT
SEE NOTE 5
RRELAY
TERMINAL BLOCK SHOWN
FOR 50HZ MODELS ONLY
THREE SPEED MOTOR WIRING
(SELECT MODELS ONLY)
SEE NOTE 3
WHITEWH
USE MIN. 75C FIELD WIRE
1) RED WIRES TO BE ON TRANSFORMER TERMINAL "3" FOR 240 VOLTS
AND ON TERMINAL "2" FOR 208 VOLTS.
2) SEE COMPOSITE WIRING DIAGRAMS IN INSTALLATION INSTRUCTIONS
FOR PROPER LOW VOLTAGE WIRING CONNECTIONS.
3) CONFIRM SPEED TAP SELECTED IS APPROPRIATE FOR APPLICATION.
IF SPEED TAP NEEDS TO BE CHANGED, CONNECT APPROPRIATE
MOTOR WIRE (RED FOR LOW, BLUE FOR MEDIUM, AND BLACK FOR
HIGH SPEED) ON "COM" CONNECTION OF THE EBTDR.
INACTIVE MOTOR WIRES MUST BE CONNECTED TO "M1 OR M2"
ON EBTDR.
4) BROWN AND WHITE WIRES ARE USED WITH HEAT KITS ON LY.
5) EBTDR HAS A 7 SECOND ON DELAY WHEN "G" IS ENERGIZED
AND A 65 SECOND OFF DELAY WHEN "G" IS DE-ENERGIZED.
6) LOW VOLTAGE FIELD WIRING TO BE N.E.C CLASS 2 WIRES.