Amana APH16 M Series User 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.
Goodman Manufacturing Company, L.P.
5151 San Felipe, Suite 500, Houston, TX 77056
www.goodmanmfg.com www.amana-hac.com
©2015 Goodman Manufacturing Company, L.P.
I NSTALLATION I NSTRUCTIONS
F OR S ELF -C ONTAINED P ACKAGE
H EAT P UMP U NITS
APH16 “M” SERIES
*NOTE: Please contact your distributor or our
website for the applicable
Specification Sheets referred to in this manual.
These installation instructions cover the outdoor
installation of self contained package air conditioners
and heating units. See the Specification Sheets
applicable to your model for information regarding
accessories.
Affix this manual and Users Information Manual adjacent to the unit.
is a registered trademark of Maytag Corporation or its related companies and is used under license. All rights reserved.
IOA-3013
02/2015

2
INDEX
SHIPPING INSPECTION ...................................................................................................................................................... 4
REPLACEMENTPARTS ....................................................................................................................................................... 4
ORDERING PARTS .............................................................................................................................................................. 4
SAFETYINSTRUCTIONS..................................................................................................................................................... 4
CODESANDREGULATIONS ............................................................................................................................................... 5
EPAREGULATIONS ............................................................................................................................................................ 5
NATIONAL CODES ............................................................................................................................................................... 5
MAJORCOMPONENTS ....................................................................................................................................................... 5
PRE-INSTALLATIONCHECKS ............................................................................................................................................. 5
CLEARANCES AND ACCESSIBILITY .......................................................................................................................................... 5
UNIT LOCATION .................................................................................................................................................................. 5
GROUND LEVEL PRE-INSTALLATION DETAILS............................................................................................................................ 6
ROOF TOP PRE-INSTALLATION DETAILS ................................................................................................................................... 6
ROOF CURB INSTALLATIONS ONLY ......................................................................................................................................... 6
RIGGING DETAILS ............................................................................................................................................................... 7
CIRCULATINGAIRAND FILTERS ....................................................................................................................................... 7
AIR FLOW CONVERSION ...................................................................................................................................................... 7
DUCT WORK ..................................................................................................................................................................... 7
FILTERS ........................................................................................................................................................................... 7
PIPING ................................................................................................................................................................................. 8
CONDENSATE DRAIN ........................................................................................................................................................... 8
WIRING ................................................................................................................................................................................ 8
HIGH VOLTAGE WIRING....................................................................................................................................................... 8
LOW VOLTAGE WIRING ....................................................................................................................................................... 9
INTERNAL WIRING.............................................................................................................................................................. 9
STARTUP,ADJUSTMENTS,ANDCHECKS ......................................................................................................................... 9
COOLING START-UPPROCEDURES ........................................................................................................................................ 9
HEAT PUMP START-UPPROCEDURE ...................................................................................................................................... 9
FINAL SYSTEM CHECKS..................................................................................................................................................... 10
COMPONENTS .................................................................................................................................................................. 10
HEAT PUMPOPERATION ...................................................................................................................................................11
COOLING CYCLE .............................................................................................................................................................. 11
HEATING CYCLE ............................................................................................................................................................... 11
DEFROST CONTROL.......................................................................................................................................................... 11
AIR FLOW MEASUREMENT AND ADJUSTMENT ......................................................................................................................... 12
AIR FLOW ADJUSTMENTS FOR INDOOR BLOWER MOTOR........................................................................................................ 12
APH DIP SWITCH FUNCTIONS........................................................................................................................................... 12
APH CFM DELIVERY AND ADJUSTMENTS ............................................................................................................................ 12
APHTHERMOSTAT “FAN ONLY” MODE ............................................................................................................................... 12
APH HUMIDITY CONTROL ................................................................................................................................................. 13
APHTWO-STAGE HEATING ................................................................................................................................................ 13
APH THERMOSTAT WIRING ............................................................................................................................................... 13
EXPANSION VALVE (TXV)SYSTEM ....................................................................................................................................... 13
SYSTEM CHARGING HEATING MODE ..................................................................................................................................... 14
ELECTRICALADJUSTMENTS ........................................................................................................................................... 14

3
MAINTENANCE .................................................................................................................................................................. 14
SERVICE ............................................................................................................................................................................ 15
COMMON CAUSES OF UNSATISFACTORY OPERATION OF HEAT PUMP ON THE HEATING CYCLE ............................................................ 15
INADEQUATE AIR VOLUME THROUGH INDOOR COIL ............................................................................................... 15
OUTSIDE AIR INTO RETURN DUCT ..................................................................................................................... 15
UNDERCHARGE .............................................................................................................................................. 15
POOR “TERMINATING” SENSOR CONTACT ........................................................................................................... 15
MALFUNCTIONING REVERSING VALVE - THIS MAY BE DUE TO: ................................................................................ 15
APPENDIX ......................................................................................................................................................................... 16
TROUBLESHOOTING CHART ................................................................................................................................................ 17
APH16BLOWER PERFORMANCE DATA ................................................................................................................................18
APH16 CFM OUTPUT AND DIP SWITCH SETTINGS .............................................................................................................. 19
CFM OUTPUT FOR DIPSWITCH COMBINATIONS 1-2 (ELECTRIC HEAT) .................................................................. 19
DIPSWITCH SETTINGS FOR SINGLE AND TWO-STAGE THERMOSTATS ...................................................................... 19
CFM OUTPUT FOR DIPSWITCH COMBINATIONS 5-6 (COOLING/HEATING). ............................................................. 19
ADJUSTMENTS THROUGH DIP SWITCH COMBINATIONS 7-8.................................................................................... 19
MINIMUMCLEARANCES ................................................................................................................................................... 20
DIMENSIONS.................................................................................................................................................................... 20
START-UPCHECKLIST...................................................................................................................................................... 21

4
TOTHE INSTALLER
Carefully read all instructions for the installation prior to installing
unit. Make sure each step or procedure is understood and any
special considerations are taken into account before starting
installation. Assemble all tools, hardware and supplies needed to
complete the installation. Some items may need to be purchased
locally. After deciding where to install unit, closely look the location
over - both the inside and outside of home. Note any potential
obstacles or problems that might be encountered as noted in this
manual. Choose a more suitable location if necessary.
IMPORTANT NOTE: If a crankcase heater is used, the unit
should be energized 24 hours prior to compressor start up to
ensure crankcase heater has sufficiently warmed the compres-
sor. Compressor damage may occur if this step is not fol-
lowed.
SHIPPING INSPECTION
Upon receiving the unit, inspect it for damage from shipment.
Claims for damage, either shipping or concealed, should be filed
immediately with the shipping company. Check the unit model
number, specifications, electrical characteristics and accessories
to determine if they are correct. In the event an incorrect unit is
shipped, it must be returned to the supplier and must NOT be
installed. The manufacturer assumes no responsibility for
installation of incorrectly shipped units.
REPLACEMENT PARTS
ORDERINGPARTS
When reporting shortages or damages, or ordering repair parts,
give the complete unit model and serial numbers as stamped
on the unit’s nameplate.
Replacement parts for this appliance are available through your
contractor or local distributor. For the location of your nearest
distributor, consult the white business pages, the yellow page
section of the local telephone book or contact:
CONSUMERAFFAIRS
GOODMANMANUFACTURINGCOMPANY,L.P.
7401 SECURITY WAY
HOUSTON,TEXAS 77040
877-254-4729
SAFETY INSTRUCTIONS
The following symbols and labels are used throughout this manual
to indicate immediate or potential safety hazards. It is the owner’s
and installer’s responsibility to read and comply with all safety
information and instructions accompanying these symbols. Failure
to heed safety information increases the risk of personal injury,
property damage, and/or product damage.

5
CODES AND REGULATIONS
TheAPH M-Series heat pumps are designed for OUTDOOR USE ONLY. *PH M-Series is available in cooling capacities of 2, 2.5, 3, 3 1/2
and 4 nominal tons of cooling. Optional field installed heat kits are available in 5,8,10,15 and 20 kW. The units can be easily installed
in manufactured or modular homes with existing high-static duct work. The units can also be easily converted to accommodate a
plenum for normal or low-static applications. The APH M-Series are self contained packaged units so the only connections needed for
installation are the supply and return ducts, the line and low voltage wiring and drain connection. Rated performance is achieved after
72 hours of operation. Rated performance is delivered at the specified airflow. See outdoor unit specification sheet for split system
models or product specification sheet for packaged and light commercial models. Specification sheets can be found at www.amana-
hac.com for Amana®brand products. Within either website, please select the residential or commercial products menu and then
select the submenu for the type of product to be installed, such as air conditioners or heat pumps, to access a list of product pages
that each contain links to that model’s specification sheet. The units are ETL listed and AHRI certified.
The information on the rating plate is in compliance with the FTC & DOE rating for single phase units.
EPAREGULATIONS
IMPORTANT:THE UNITED STATES ENVIRONMENTAL PROTECTION AGENCY (EPA)HAS ISSUED VARIOUS REGULATIONS REGARDING THE INTRODUCTION
AND DISPOSAL OF REFRIGERANTS IN THIS UNIT. FAILURE TO FOLLOW THESE REGULATIONS MAY HARM THE ENVIRONMENT AND CAN LEAD TO THE
IMPOSITION OF SUBSTANTIAL FINES. BECAUSE REGULATIONS MAY VARY DUE TO PASSAGE OF NEW LAWS, WE SUGGEST ACERTIFIED TECHNICIAN
PERFORM ANY WORK DONE ON THIS UNIT. SHOULD YOU HAVE ANY QUESTIONS PLEASE CONTACT THE LOCAL OFFICE OF THE EPA.
NATIONAL CODES
This product is designed and manufactured to permit installation in accordance with National Codes. It is the installer’s responsibility
to install the product in accordance with National Codes and/or prevailing local codes and regulations.
MAJOR COMPONENTS
The unit includes a hermetically sealed refrigerating system (consisting of a compressor, condenser coil, evaporator coil with flowrator),
an indoor blower, a condenser fan and all necessary internal electrical wiring. The heat pump also includes a reversing valve, solenoid,
defrost thermostat and control and loss of charge protection. The system is factory-evacuated, charged and performance tested.
Refrigerant amount and type are indicated on rating plate.
PRE-INSTALLATION CHECKS
Before attempting any installation, the following points should be considered:
• Structural strength of supporting members
• Clearances and provision for servicing
• Power supply and wiring
• Air duct connections
• Drain facilities and connections
• Location may be on any four sides of a home, manufactured or modular, to minimize noise
CLEARANCESAND ACCESSIBILITY
The unit is designed to be located outside the building with unobstructed condenser air inlet and discharge. Additionally, the unit
must be situated to permit access for service and installation. Condenser air enters from three sides. Air discharges upward from
the top of the unit. Refrigerant gauge connections are made on the right side of the unit as you face the compressor compartment.
Electrical connections can be made either on the right, bottom or duct panel side of the unit. The best and most common
application is for the unit to be located 10” from wall (4” minimum) with the connection side facing the wall. This “close to the wall”
application minimizes exposed wiring.
Close to the wall application assures free, unobstructed air to the other two sides. In more confined application spaces, such as
corners provide a minimum 12” clearance on all air inlet sides. Allow 36” minimum for service access to the compressor
compartment and controls. The top of the unit should be completely unobstructed. If units are to be located under an overhang,
there should be a minimum of 48” clearance and provisions made to deflect the warm discharge air out from the overhang.
UNIT LOCATION
Consider the affect of outdoor fan noise on conditioned space and any adjacent occupied space. It is recommended that the unit
be placed so that condenser air discharge does not blow toward windows less than 25 feet away. Consideration should also be
given to shade and unit appearance.
Heat pumps require special location consideration in areas of heavy snow accumulation and/or areas with prolonged continuous
subfreezing temperatures. Heat pump unit bases have holes under the outdoor coil to permit drainage of defrost water accumulation.
The unit must be situated to permit free unobstructed drainage of the defrost water and ice. A minimum 2" clearance under the
outdoor coil is required in the milder climates.

6
GROUND LEVELPRE-INSTALLATION DETAILS
The unit should be set on a solid, level foundation - preferably a
concrete slab at least 4 inches thick. The slab should be above
ground level and surrounded by a graveled area for good drainage.
Any slab used as a unit’s foundation should not adjoin the building
as it is possible that sound and vibration may be transmitted to the
structure.
ROOF TOP PRE-INSTALLATION DETAILS
Ensure that the roof is weather tight and allows proper drainage of
condensation. Use steel or treated wood beams as unit support for
load distribution.
NOTE: To ensure proper condensate drainage, unit must be installed in a level
position.
• To avoid possible property damage or personal injury, the roof must have
sufficient structural strength to carry the weight of the unit(s) and snow or
water loads as required by local codes. Consult a structural engineer to
determine the weight capabilities of the roof.
• The unit may be installed directly on wood floors or on Class A, Class B,
or Class C roof covering material.
• To avoid possible personal injury, a safe, flat surface for service personnel
should be provided.
ROOF CURB INSTALLATIONS ONLY
NOTE: Sufficient structural support must be determined prior to locating and
mounting the curb and package unit.
Curb insulation, cant strips, flashing and general roofing material are furnished
by the contractor.
GroundLevelInstallation
RooftopInstallation
RoofCurbInstallation
Curbing must be installed in compliance with the National Roofing Contractors
Association Manual. Construct duct work using current industry guidelines. The duct
work must be placed into the roof curb before mounting the package unit.

7
RIGGING DETAILS
IMPORTANT: If using bottom discharge with roof curb, duct work should be attached to the curb prior to installing the unit.
Lower unit carefully onto roof mounting curb. While rigging unit, center of gravity will cause condenser end to be lower than supply
air end.
CIRCULATING AIR AND FILTERS
AIR FLOW CONVERSION
Units can easily be converted from horizontal to down discharge air flow delivery. In down discharge or high static installations, the
installer should measure the total external static and review the blower performance charts before performing the installation. In
some installations it will be necessary to change the blower speed to provide proper air flow.
HorizontalAirFlow
Single phase models are shipped without horizontal duct covers. If needed, these
kits may be ordered through Goodman’s Service Parts department.
DownDischargeApplications
Cut insulation around bottom openings and remove panels from the bottom of the
unit, saving the screws holding the panels in place.
NOTE: Singlephasemodels require installation of horizontal duct kit #20464501PDGK
(medium chassis) and #20464502PDGK (large chassis).
DUCTWORK
Duct systems and register sizes must be properly designed for the C.F.M. and external
static pressure rating of the unit. Duct work should be designed in accordance with
the recommended methods of Air Conditioning Contractors of America Manual D
(Residential) or Manual Q (Commercial). All duct work exposed to the outdoors must
include a weatherproof barrier and adequate insulation.
A duct system should be installed in accordance with Standards of the National Board
of Fire Underwriters for the Installation of Air Conditioning, Warm Air Heating and
Ventilating Systems. Pamphlets No. 90A and 90B.
The supply duct from the unit through a wall may be installed without clearance. However, minimum unit clearances as shown in
the Appendix must be maintained. The supply duct should be provided with an access panel large enough to inspect the air
chamber downstream of the heat exchanger. A cover should be tightly attached to prevent air leaks.
For duct flange dimensions on the unit refer to the Unit Dimension illustration in the Appendix.
For down discharge applications, the duct work should be attached to the roof curb prior to installing the unit. Duct work dimensions
are shown in the roof curb installation manual.
If desired, supply and return duct connections to the unit may be made with flexible connections to reduce possible unit operating
sound transmission.
FILTERS
Filters are not provided with unit and must be supplied and
externally installed in the return duct system by the installer. A
field-installed filter grille is recommended for easy and
convenient access to the filters for periodic inspection and
Rigging
Remove these panels
for downflow duct
applications
Supply
Return
DuctCoverInstallation

8
cleaning. When installing filters, ensure the air flow arrows on the filter
are pointing toward the circulator blower.
Refer to the unit filter size chart below for filter size information. NOMINAL SIZE (INCHES) NOMINAL AREA (SQ. FT.)
10x20 1.4
14x20 1.9
14x25 2.4
15x20 2.1
16x20 2.2
16x25 2.8
20x20 2.8
20x25 3.5
25x25 4.3
MINIMUM FILTER SIZE
500 1000 1500 2000 2500 3000 3500
7
6
5
4
3
2
DISPOSABLEFILTER
PERMANENTFILTER
Airflow - SCFM
NominalFilterArea
SquareFeet
NOTE: Filters must have adequate face area for the rated quantity of the
unit. See the air delivery table below for recommended filter size. Size
the filters in accordance with their manufacturer recommendations.
Throwaway filters must be sized for a maximum face velocity of 300 feet
per minute.
PIPING
CONDENSATE DRAIN
The condensate drain connection of the evaporator is a half coupling of ¾”
N.P.T. A trap must be provided to have proper condensate drainage.
Install condensate drain trap as shown. Use ¾ “ drain connection size or
larger. Do not operate without trap. Unit must be level or slightly inclined
toward drain.
WIRING
NOTE: All wiring should be made in accordance with the National Electrical
Code.
Consult your local Power Company to determine the availability of sufficient power to operate the unit. Check the voltage, frequency,
and phase at the power supply to ensure it corresponds to the unit’s RATED VOLTAGE REQUIREMENT.
In accordance with the N.E.C. or local codes, install a branch circuit fused disconnect near the unit. Determine wire sizes and
overcurrent protection from the unit nameplate ampacity and in accordance with the Minimum Filter Size or the N.E.C. The wiring
should never be sized smaller than is recommended by either of these two sources.
Fuses smaller than that recommended on the rating plate could result in unnecessary fuse failure or service calls. The use of
protective devices of larger size than indicated could result in extensive damage to the equipment. The manufacturer bears no
responsibility for damage caused to equipment as result of the use of larger than is recommended size protective devices.
All units have undergone a run test prior to packaging for shipment. This equipment has been started at minimum rated voltage
and checked for satisfactory operation. Do not attempt to operate this unit if the voltage is not within the minimum and maximum
voltages shown on nameplate.
All exterior wiring must be within approved weatherproof conduit. The unit must be permanently grounded in accordance with
local codes, or in absence of local codes, with N.E.C. ANSI/ NFPA NO. 70-1984 or latest edition by using ground lug in the control
box.
Fuses or HACR type circuit breakers may be used where codes permit.
IMPORTANT NOTE: Some single phase units are equipped with a single-pole contactor. Exercise caution when servicing as only
one leg of the power supply is broken with the contractor.
HIGH VOLTAGE WIRING
•Single Phase. Connect two leads to terminals L1 & L2 in
the electrical control section, using wire sizes specified in
wiring table.
2" Minimum
3" Minimum
A Positive Liquid Seal
Is Required
Flexible
Tubing-Hose
Or Pipe
Drain
Connection
Unit

9
LOW VOLTAGEWIRING
•Heat Pumps. Connect 24V wires from the thermostat to the
correspondingwiresinthecontrol box using No. 18AWGasfollows:
NOTE: All APH16 units have two-stage cooling and require two-stage
heat/cool with optional third stage electric heat thermostat.
BRANCH CIRCUIT AMPACITY 15 20 25 30 35 40 45 50
SUPPLY WIRE LENGTH -
FEET
200 64443322
150 86644433
100 108866644
50 141210108866
INTERNALWIRING
A diagram detailing the internal wiring of this unit is located on the
electrical box cover. If any of the original wire supplied with the
appliance must be replaced, the wire gauge and insulation must
be the same as the original wiring.
Transformer is wired for 230 volts on the 208/230 models. See
wiring diagram for 208 volt wiring.
1. For branch circuit wiring (main power supply to unit disconnect),
the minimum wire size for the length of run can be determined
using the circuit ampacity found on the unit rating plate and the
table below. From the unit disconnect to the unit, the smallest wire size allowable may be used for the ampacity, as the
disconnect must be in sight of the unit.
2. Wire size based on 60°C rated wire insulation and 30°C Ambient Temperature (86°F).
3. For more than three conductors in a raceway or cable, see the N.E.C. for derating the ampacity of each conductor.
STARTUP, ADJUSTMENTS, AND CHECKS
COOLING START-UPPROCEDURES
With power turned off at all disconnects:
1. Turn thermostat system switch to “COOL” and fan switch to
“AUTO”. Next, turn the temperature setting as high as it will
go.
2. Inspect all registers and set them to the normal open
position.
3. Turn on the electrical supply at the disconnect.
4. Turn the fan switch to the “ON” position. The blower should begin ramping up immediately.
5. Turn the fan switch to “AUTO” position. The blower should begin ramping down after an approximate 60-second delay.
6. Slowly lower the cooling temperature until the unit starts. The compressor, blower and fan should now be operating. Allow the
unit to run 10 minutes, make sure cool air is being supplied by the unit.
7. Turn the temperature setting to the highest position, stopping the unit. The indoor blower will continue to run for approximately
60-seconds.
8. Turn the thermostat system switch to “OFF” and disconnect all power when servicing the unit.
HEAT PUMP START-UPPROCEDURE
1. Check the cooling mode for the heat pump in the same manner as above. The reversing valve is energized when the thermostat
is placed in the cooling position. A clicking sound should be noticeable from the reversing valve. By lowering the temperature
setting to call for cooling, the contractor is energized. The compressor, blower and fan should then be running. After the cooling
mode is checked out, turn the thermostat system switch to “OFF”.
2. Turn the thermostat system switch to “HEAT” and fan switch to “AUTO”.
3. Slowly raise the heating temperature setting. When the heating first stage makes contact, stop raising the temperature setting..
The compressor, blower and fan should now be running with the reversing valve in the de-energized (heating) position. After
giving the unit time to settle out, make sure the unit is supplying heated air.
Terminal Thermostat
Red R (24V)
Green G(fan)
Orange O(rev. valve)
White W1 (heat, 2nd)
Brown W2 (heat, 3rd)
Purple Y1 (low cool)
Yellow Y2 (high cool)
Blue C (24VCommon)
APH1624-48
Thermostats mustbe setto energize "G"during cooling.
This is defaulton mostall thermostats.

10
4. If the outdoor ambient is above 80°F, the unit may trip on its high pressure cut out when on heating. The compressor should
stop. The heating cycle must be thoroughly checked, so postpone the test to another day when conditions are more suitable.
DONOTFAILTOTEST.
5. If the outdoor ambient is low and the unit operates properly on the heating cycle, you may check the pressure cutout operation
by blocking off the indoor return air until the unit trips.
6. If unit operates properly in the heating cycle, raise the temperature setting until the heating second stage makes contact.
Supplemental resistance heat, if installed should now come on. Ensure all heaters energize.
NOTE: All 16 SEER models have two stages of compressor heat. During resistance heat test, increase temperature setting
until third stage heat is energized.
If outdoor thermostats are installed, the outdoor ambient must be below the set point of these thermostats for the heaters to
operate. It may be necessary to jumper these thermostats to check heater operation if outdoor ambient is mild.
7. THERMOSTATS WITH EMERGENCY HEAT. For thermostats with an emergency heat switch, raise the temperature setting until
the heating second stage makes contact. The emergency heat switch is located at the bottom of the thermostat. Move the switch
to emergency heat. The heat pump will stop, the blower will continue to run, all heaters will come on and the thermostat
emergency heat light will come on.
8. If checking the unit in the wintertime, when the outdoor coil is cold enough to actuate the defrost control, observe at least one
defrost cycle to make sure the unit defrosts completely.
FINAL SYSTEM CHECKS
1. Ensure all supply and return air grilles are adjusted and the air distribution system is balanced for the best compromise
between heating and cooling.
2. Ensure there are no air leaks in the duct work.
3. Check air flow and refrigerant charge. See Sections on Air Flow Measurement and Adjustment and Checking Charge.
4. Ensure the unit is free of “rattles”, and the tubing in the unit is free from excessive vibration. The tubes or lines should not rub
against sheet metal surfaces, edges or each other.
5. Ensure the Owner is instructed on the unit operation, filter, servicing, correct thermostat operation, etc.
Set the thermostat at the appropriate setting for cooling and heating or automatic changeover for normal use.
NOTE: The “Cooling Start-up Procedure” is a recommended step as it serves as an system indicator that the unit will operate
normally.
COMPONENTS
Contactor
This control is activated (closed) by the room thermostat for both heating and cooling. The contactor has a 24V coil and supplies
power to the compressor and outdoor fan motor.
Crankcase Heater
This item is “ON” whenever power is supplied to the unit and the crankcase heater thermostat is closed. Crankcase heater
thermostat closes at 67° and opens at 85°. It warms the compressor crankcase thereby preventing liquid migration and subsequent
compressor damage. The insert type heater is self regulating. It is connected electrically to the contactor L1 and L2 terminals.
Condenser Motor
This item is activated by the contactor during heating and cooling, except during defrost and emergency heat operation. On 460V
heat pumps, the condenser motor is activated by the CMR.
Compressor
This item is activated by the contactor for heating and cooling, except during emergency heat. It is protected by an internal overload.
Contactor Relay
This control is activated by the thermostat (24V coil) and supplies power to the contactor.
Defrost Control
The Defrost Control provides time/temperature initiation and termination of the defrost cycle. When a defrost cycle is initiated, the
Defrost Control shifts the reversing valve to “COOLING” mode, stops the outdoor fan and brings on supplemental heat. Normally,
a defrost cycle will take only 2-3 minutes unless system is low on refrigerant charge or outdoor conditions are severe (i.e. windy
and cold). The defrost control also provides for a 3 minute off cycle compressor delay.
Outdoor Thermostat
These optional controls are used to prevent full electric heater operation at varying outdoor ambient (0°F to 45°F). They are normally
open above their set points and closed below to permit staging of indoor supplement heater operation. If the outdoor ambient
temperature is below 0°F (-18°C) with 50% or higher RH, an outdoor thermostat (OT) must be installed and set at (0°) on the dial.
Failure to comply with this requirement may result in damage to the product which may not be covered by the manufacturer’s
warranty.
ReversingValveCoil
This coil is activated by the thermostat, in the cooling mode and during defrost. It positions the reversing valve pilot valve for cooling
operation.

11
Indoor Blower Motor
This is activated by the room thermostat by COOLING or FAN ON position. ForAPH models, the motor is energized by the fan control
board for ECM motors. ECM motors are constant CFM motors with very low power consumption. This motor is energized by a 24V
signal from the thermostat. (See Air Flow Measurement and Adjustment for speed adjustment instructions).
HEAT PUMP OPERATION
COOLING CYCLE
When the heat pump is in the cooling cycle, it operates exactly as a Air Conditioner unit.
HEATING CYCLE
The heat pump operates in the heating cycle by redirecting
refrigerant flow through the refrigerant circuit external to the
compressor. This is accomplished with through the reversing
valve. Hot discharge vapor from the compressor is directed to
the indoor coil (evaporator on the cooling cycle) where the heat
is removed, and the vapor condenses to liquid. It then goes
through the expansion device to the outdoor coil (condenser on
the cooling cycle) where the liquid is evaporated, and the vapor
goes to the compressor.
When the solenoid valve coil is operated either from heating to
cooling or vice versa, the piston in the reversing valve to the low
pressure (high pressure) reverse positions in the reversing valve.
The following figures show a schematic of a heat pump on the
cooling cycle and the heating cycle. In addition to a reversing
valve, a heat pump is equipped with an expansion device and
check valve for the indoor coil, and similar equipment for the
outdoor coil. It is also provided with a defrost control system.
The expansion devices are flowrator distributors and perform
the same function on the heating cycle as on the cooling cycle.
The flowrator distributors also act as check valves to allow for
the reverse of refrigerant flow.
When the heat pump is on the heating cycle, the outdoor coil is
functioning as an evaporator. The temperature of the refrigerant
in the outdoor coil must be below the temperature of the outdoor
air in order to extract heat from the air. Thus, the greater the
difference in the outdoor temperature and the outdoor coil
temperature, the greater the heating capacity of the heat pump.
This phenomenon is a characteristic of a heat pump. It is a
good practice to provide supplementary heat for all heat pump
installations in areas where the temperature drops below 45°F.
It is also a good practice to provide sufficient supplementary
heat to handle the entire heating requirement should there be a
component failure of the heat pump, such as a compressor, or
refrigerant leak, etc.
Since the temperature of the refrigerant in the outdoor coil on the heating cycle is generally below freezing point, frost forms on the
surfaces of the outdoor coil under certain weather conditions of temperature and relative humidity. Therefore, it is necessary to
reverse the flow of the refrigerant to provide hot gas in the outdoor coil to melt the frost accumulation. This is accomplished by
reversing the heat pump to the cooling cycle. At the same time, the outdoor fan stops to hasten the temperature rise of the outdoor
coil and lessen the time required for defrosting. The indoor blower continues to run and the supplementary heaters are energized.
DEFROSTCONTROL
During operation the power to the circuit board is controlled by a temperature sensor, which is clamped to a feeder tube entering
the outdoor coil. Defrost timing periods of 30, 60 and 90 minutes may be selected by setting the circuit board jumper to 30, 60 and
90 respectively. Accumulation of time for the timing period selected starts when the sensor closes (approximately 34°F), and when
the wall thermostat calls for heat. At the end of the timing period, the unit’s defrost cycle will be initiated provided the sensor
remains closed. When the sensor opens (approximately 60°F), the defrost cycle is terminated and the timing period is reset. If the
defrost cycle is not terminated due to the sensor temperature, a twelve minute override interrupts the unit’s defrost period.
EVAPORATOR
COOLING
SERVICE VALVE
SERVICE PORT REVERSING VALVE
CONDENSER
SERVICE PORT
COMPRESSOR
SERVICE PORT
ACCUMULATOR
EXPANSION DEVICE
CHECK VALVE
ORIFICE
SERVICE
VALVE
CHECK VALVE
ORIFICE
INDOOR
COIL
DISTRIBUTOR
OUTDOOR
COIL
EVAPORATOR
HEATING
SERVICE VALVE
SERVICE PORT REVERSING VALVE
CONDENSER
COMPRESSOR
SERVICE PORT
ACCUMULATOR
CHECK VALVE
ORIFICE
SERVICE
VALVE
CHECK VALVE
ORIFICE
INDOOR
COIL
DISTRIBUTOR
OUTDOOR
COIL
DISTRIBUTOR

12
SuggestedFieldTesting/TroubleShooting
1. Run unit in the heating mode (room thermostat calling for heat).
2. Check unit for proper charge. NOTE: Bands of frost on the condenser coil indicate low refrigerant charge.
3. Shut off power to unit.
4. Disconnect outdoor fan by removing the outdoor fan motor wire from “DF2” on defrost control.
5. Restart unit and allow frost to accumulate.
6. After a few minutes of operation, the unit’s defrost thermostat should close. To verify this, check for 24 volts between “DFT” and
“C” on board. If the temperature at the thermostat is less than 28°F and the thermostat is open, replace the unit’s defrost
thermostat, as it is defective.
7. When the unit’s defrost thermostat has closed, short the test pins on the defrost board until the reversing valve shifts, indicating
defrost. This should take up to 22 seconds depending on what timing period the control is set on. After defrost initiation, the
short must instantly be removed or the unit’s defrost period will only last 3 seconds.
8. The control is shipped from the factory with the compressor delay option selected. This will de-energize the compressor
contactor for 30 seconds on defrost initiation and defrost termination. If the jumper is set to Normal, the compressor will
continue to run during defrost initiation and defrost termination. The control will also ignore the low pressure switch connected
to R-PS1 and PS2 for 5 minutes upon defrost initiation and 5 minutes after defrost termination.
9. After the unit’s defrost thermostat has terminated, check the defrost thermostat for 24 volts between “DFT” and “C”. The reading
should indicate 0 volts (open sensor).
10. Shut off power to unit.
11. Replace outdoor fan motor lead to terminal “DF2” on defrost board and turn on power.
AIRFLOW MEASUREMENT AND ADJUSTMENT
Please review the Duct Work section before proceeding with the airflow measurements and adjustments in this section.
Unit blower curves (see Specification Sheets) are based on external static pressure (ESP per in/W.C.). The duct openings on the
unit are considered internal static pressure. As long as ESP is maintained, the unit will deliver the proper air up to the maximum
static pressure listed for the CFM required by the application (i.e. home, building, etc.)
In general, 400 CFM per ton of cooling capacity is a rule of thumb. Some applications depending on the sensible and latent
capacity requirements may need only 350 CFM or up to 425 CFM per ton. Check condition space load requirements (from load
calculations) and equipment expanded ratings data to match CFM and capacity.
After unit is set and duct work completed, verify the ESP with a 1-inch inclined manometer with pilot tubes or a Magnahelic gauge
and confirm CFM to blower curves in the Specification Sheets.
NOTE: Never run CFM below 350 CFM per ton, evaporator freezing or poor unit performance is possible.
AIR FLOW ADJUSTMENTS FOR INDOOR BLOWER MOTOR
ECMMotor
The ECM control board is factory set with the dip switch #4 in the “ON” position for single stage units and to the "OFF" position for
the2 stageunits.All otherdipswitchesare factory set in the “OFF”position. For most applications, the settings are to be changed
according to the electric heat size.
The ECM motor provides many features not available on the traditional PSC motor. These features include:
• Improved Efficiency
• Constant CFM
• Soft Start and Stop
• Improved Humidity Control
ECMMotorSpeedAdjustment
Each ECM blower motor has been preprogrammed for operation at 4 distinct air flow levels when operating in Cooling/Heat Pump
mode or Electric Heat mode. These 4 distinct levels may also be adjusted slightly lower or higher if desired. The adjustment
between levels and the trim adjustments are made by changing the dip switch(s) either to an "OFF" or "ON" position.
See Appendix for Blower Performance Data tables.
APHDIP SWITCH FUNCTIONS
The ECM motor has an electronic control that contains eight (8) 2-
position dip switches. The function of these dip switches is shown
in Table 1.
APHCFMDELIVERY AND ADJUSTMENTS
See Appendix for CFM Output, Adjustments and DIP switch
settings.
APH THERMOSTAT “FAN ONLY” MODE
During Fan Only Operations, the CFM output is 50% of the high stage
cooling setting.
DIP SWITCH NUMBER FUNCTION
1
2
3N/A
4 Indoor Thermostat
5
6
7
8
Cooling & Heat Pump CFM
CFM Trim Adjust
Electric Heat
Table 1

13
APHHUMIDITY CONTROL
When using a Humidistat (normally closed), cut jumper PJ6 on the control board. The Humidistat will only affect both low stage and high
stage cooling air flow by adjusting the Air flow to 85%.
APHTWO-STAGE HEATING
When using staged electric heat, cut jumper PJ4 on the control board.
APHTHERMOSTAT WIRING
Use thermostat wiring diagrams provided with the thermostat when making these connections.
See Appendix for Blower Performance tables.
SUPERHEAT CAN BE DETERMINED AS FOLLOWS:
1. Read suction pressure. Determine Saturated Suction Temperature from tables or pressure gauge saturated temperature
scale (R-410A).
2. Read suction line temperature.
3. Use the following formula:
EXPANSION VALVE (TXV) SYSTEM
TwoSpeedApplication(APH16)
Run the unit on high stage cooling for 10 minutes until refrigerant pressures stabilize. Follow the guidelines and methods below
to check unit operation and ensure that the refrigerant charge is within limits. Charge the unit on high stage.
1. Purge gauge lines. Connect service gauge manifold to access fittings. Run system at least 10 minutes to allow pressure to
stabilize.
2. Temporarily install thermometer on liquid (small) line near liquid line access fitting with adequate contact and insulate for best
possible reading.
3. Check subcooling and superheat. Two stage systems running on high stage with TXV application should have a subcooling and
superheat within the range listed on the chart.
a. If subcooling and superheat are low, adjust TXV superheat, then check subcooling.
NOTE: To adjust superheat, turn the valve stem clockwise to increase and counter clockwise to decrease.
b. If subcooling is low and superheat is high, add charge to raise subcooling then check superheat.
c. If subcooling and superheat are high, adjust TXV valve superheat, then check subcooling.
SUCTION PRESSURE SATURATED SUCTION
TEMPERATURE ºF
PSIG R-410A
50 1
52 3
54 4
56 6
58 7
60 8
62 10
64 11
66 13
68 14
70 15
72 16
74 17
76 19
78 20
80 21
85 24
90 26
95 29
100 31
110 36
120 41
130 45
140 49
150 53
160 56
170 60
SATURATED SUCTION PRESSURE
TEMPERATURE CHART
SUPERHEAT=SUCTIONLINETEMP-SAT.SUCTIONTEMP
LIQUID PRESSURE SATURATED LIQUID
TEMPERATURE ºF
PSIG R-410A
200 70
210 73
220 76
225 78
235 80
245 83
255 85
265 88
275 90
285 92
295 95
305 97
325 101
355 108
375 112
405 118
415 119
425 121
435 123
445 125
475 130
500 134
525 138
550 142
575 145
600 149
625 152
SATURATED LIQUID PRESSURE
TEMPERATURE CHART
SUBCOOLING =SAT.LIQUIDTEMP.-LIQUIDLINETEMP.

14
d. If subcooling is high and superheat is low, adjust TXV valve superheat and remove charge to lower the subcooling.
NOTE: Do NOT adjust the charge based on suction pressure unless there is a gross undercharge.
4. Disconnect manifold set, installation is complete.
Refrigerant Charge Check (Units with Fixed Orifice Devices)
After completing airflow measurements and adjustments the unit’s
refrigerant charge must be checked. All package units with fixed orifice
devices are charged using the super heat method at the compressor
suction line.
After superheat is adjusted it is recommended to check unit sub-cooling
at the condenser coil liquid line out. For charge adjustments, see
superheat and subcooling charts shown for each model.
SYSTEM CHARGING HEATING MODE
The proper method of charging a heat pump in the heat mode is by
weighing the charge according to the total charge listed on the rating
plate.
Measure the hot gas discharge at the compressor to ensure proper TXV setting. To ensure optimum system performance in heat
mode, the TXV may require adjustment.
1. Allow the system to operate for at least 20 minutes.
2. Attach and insulate an electronic thermometer to the hot gas discharge line mid-way between the compressor and the
reversing valve.
NOTE: The thermometer must be well insulated to prevent ambient influences.
3. Allow the compressor to operate for about 10 additional minutes and measure the hot gas discharge temperature.
4. Using an additional electronic thermometer, measure the ambient temperature.
5. Adjust the TXV until the hot gas temperature equals 100°F + ambient temperature (+ or - 3°F). Close TXV to increase the
temperature.
NOTE: When adjusting the TXV, allow the compressor to operate for about 10 minutes before taking readings. Do not adjust
TXV more than 1/4 of a turn between readings.
ELECTRICAL ADJUSTMENTS
This series of electric cooling and, heat pump package equipment is designed
to accept a field installed electric heat kit. The unit is equipped to easily install
theHKPorHKRSeriesElectricHeatKit.FullInstallationInstructionsareincluded
in this kit. Please use this document for guidance in field equipping the package
unit with electric heat.
Choose the heat kit that fits the application for the specific installation.
Permanently mark the unit’s nameplate with the model being installed. High
and low voltage connections are detailed in the heat kit instructions.
Indoor Blower motor speed tap selection may need to be modified to
accommodate normal continuous operation to prevent a nuisance trip. See
following table.
MAINTENANCE
The Self Contained Package Air Conditioner and Heat Pump should operate for many years without excessive service calls if the
unit is installed properly. However it is recommended that the
homeowner inspect the unit before a seasonal start up. The
coils should be free of debris so adequate air flow is achieved.
The return and supply registers should be free of any
obstructions. The filters should be cleaned or replaced. These
few steps will help to keep the product up time to a maximum.
The Troubleshooting Chart (see Appendix) should help in
identifying problems if the unit does not operate properly.
Refer to Blower Performance section in the Appendix - Higher air flow lowers temperature rise.
Lower air flow raises temperature rise.
Models Superheat °F Subcooling °F
APH1624M41 15 ±2 8 ±2
APH1630M41 15 ±2 10 ±2
APH1636M41 13 ±2 10 ±2
APH1642M41 15 ±2 10 ±2
APH1648M41 15 ±2 13 ±2
Design Superheat & Subcooling
@ 95°F Outdoor Ambient Temperature
High Stage
MODEL 5 8 10 15 20
APH1624M41 XXX
APH1630M41 XXXX
APH1636M41 XXXX
APH1642M41 XXXX
APH1648M41 XXXXX
ELECTRIC HEAT kW

15
SERVICE
THE FOLLOWING INFORMATION IS FOR USE BY QUALIFIED SERVICEAGENCY ONLY: OTHERS SHOULD NOTATTEMPT TO
SERVICETHIS EQUIPMENT.
COMMON CAUSES OF UNSATISFACTORY OPERATION OF HEAT PUMP ON THE HEATING CYCLE
INADEQUATE AIR VOLUME THROUGH INDOOR COIL
When a heat pump is in the heating cycle, the indoor coil is functioning as a condenser. The return air filter must always be clean, and
sufficient air volume must pass through the indoor coil to prevent excessive discharge pressure, and high pressure cut out.
OUTSIDE AIR INTO RETURN DUCT
Do not introduce cold outside air into the return duct of a heat pump installation. Do not allow air entering the indoor coil to drop below
65°F. Air below this temperature will cause low discharge pressure, thus low suction pressure, and excessive defrost cycling resulting
in low heating output. It may also cause false defrosting.
UNDERCHARGE
An undercharged heat pump on the heating cycle will cause low discharge pressure resulting in low suction pressure and frost
accumulation on the outdoor coil.
POOR “TERMINATING” SENSOR CONTACT
The unit’s defrost terminating sensor must make good thermal contact with the outdoor coil tubing. Poor contact may not terminate the
unit’s defrost cycle quickly enough to prevent the unit from cutting out on high discharge pressure.
MALFUNCTIONING REVERSING VALVE - THIS MAY BE DUE TO:
1. Solenoid not energized - In order to determine if the solenoid is energized, touch the nut that holds the solenoid cover in place
with a screwdriver. If the nut magnetically holds the screwdriver, the solenoid is energized and the unit is in the cooling cycle.
2. No voltage at unit’s solenoid - Check unit voltage. If no voltage, check wiring circuit.
3. Valve will not shift:
a. Undercharged - check for leaks;
b. Valve Body Damaged - Replace valve;
c. Unit Properly Charged - If it is on the heating cycle, raise the discharge pressure by restricting air flow through the indoor
coil.Ifthe valve does not shift, tapitlightly onbothendswith a screwdriver handle. DO NOT TAP THE VALVE BODY. If the unit
is on the cooling cycle, raise the discharge pressure by restricting air flow through the outdoor coil. If the valve does not shift
after the above attempts, cut the unit off and wait until the discharge and suction pressure equalize, and repeat above steps.
If the valve does not shift, replace it.

16
APPENDIX

17
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.
TROUBLESHOOTING CHART
SYMPTOM
High head -low suction a. Restriction in liquid line or
TXVnotfunctioning a. Remove or replace with proper size TXV.
High head - high or normal suction a. In Cooling: Dirty condenser coil a. Clean coil
In Heating: Dirty filter, Dirty indoor coil
b. Overchar
g
ed b. Correct S
y
stem char
g
e
c. In Coolin
g
: Condenser fan not runnin
g
c. In Heating: Indoor blower not running c. Repair or Replace
a. Incorrect TXV. a. Replace with correct TXV
b. Defective compressor valves b. Replace compressor
c. TXV not functioning properly c. Check for debris in TXV or deformed TXV.
Remove debris or replace TXV.
d. Incorrect TXV setting d. Check Super Heat
a. Power off or loose electrical connection a. Check for unit voltage at contactor in unit
b. Thermostat out of calibration set too high b. Reset
c. Defective contactor c. Check for 24 volts at contactor coil replace if
contacts are open
d. Blown fuses or tripped breaker d. Replace fuse or reset breaker
e. Transformer defective e. Check wiring - replace transformer
f. High or low pressure control open
(Optional) f. Check highpressure control or check unit charge
High pressure control opens at 610 psig
Low pressure control opens at 22 psig
g. Compressor overload contacts open g. Replace compressor
NOTE: Wait at least 2 hours for overload to reset
Condenser fan runs,
compressor doesn't a. Loose connection a. Check for unit voltage at compressor check & tighten all connections
b. Compressor stuck, grounded or open
winding open internal overload b. Wait at least 2 hours foroverload to reset If still
open, replace the compressor.
c. Low voltage connection c. At compressor terminals, voltage must be within
10 % of nameplate volts when unit is operating
d. Capacitor weak, open, or shorted d. Check capacitor. If defective, replace.
Low suction - coolcompressor a. In Cooling: Low indoor airflow a.
Iced evaporator coil In Heating: Dirtyoutdoor coil,defective
defrost thermostat, defective defrost
control board, outdoor fan not runnin
g
, low
refrigerant charge.
b. Low airflow b. Check - should be approximately 400 CFM per
ton, dirty air filters, all duct outlets open
c. Low refrigerant charge c. Properly charge unit
d. Operatin
g
unit in coolin
g
mode below 65°F
outdoor temperature d. Install or check low ambient control, should be open below 65°F outdoor temperature
a. Defective overload protector a. Replace - check for correct voltage
b. Unit cycling on low pressure control b. Check refrigerant charge and / or airflow
c. High pressure switch cuts out c. Check airflow (indoor & outdoor),
check expansion device
a. a. Increase speed of blower or reduce restriction
replace air filters
a. Excessive load a. Recheck load calculation
b. Defective compressor b. Replace
c. Reversing valve not seating properly. c. Replace
a. Improperly sized unit a. Recalculate load
b. Improper airflow b. Check - should be approximately 400 CFM per ton
c. Incorrect refrigerant charge. c. Charge per procedure attached to unit service
panel
d. Incorrect voltage d. At compressor terminals, voltage must be within
10% of nameplate volts when unit is operating
Increase speed of blower or reduce restriction -
replace air filters
Insufficient cooling
High suction pressure
REMEDYPOSSIBLE CAUSE
Compressor short cycles
Registers sweat Low airflow
Low head - high suction
Unit will not run

18
APH16 BLOWER PERFORMANCE DATA
Cooling/HP
Speed
Adjust
Tap CFM* Electric Heat
Adjust
Tap CFM* Cooling/HP Speed
Adjust
Tap CFM* Electric Heat
Adjust
Tap CFM*
D Mi nus 630 D Mi nus 630 D Mi nus 720 D Mi nus 720
D Norma l 700 D Normal 700 D Norma l 800 D Norma l 800
D Pl us 770 D Pl us 770 D Pl us 880 D Pl us 880
C Mi nus 743 C Mi nus 743 C Mi nus 900 C Mi nus 900
C Norma l 825 C Norma l 825 C Norma l 1,000 C Norma l 1,000
C Pl us 908 C Pl us 908 C Pl us 1,100 C Pl us 1,100
B Mi nus ** 855 B Mi nus ** 855 B Mi nus 990 B Mi nus 990
B Norma l 950 B Norma l 950 B Norma l ** 1,100 B Norma l ** 1,100
B Pl us 1,045 B Pl us 1,045 B Plus 1,210 B Pl us 1,210
A Mi nus 945 A Mi nus 945 A Mi nus 1,125 A Mi nus 1,125
A Norma l 1,050 A Norma l 1,050 A Norma l 1,250 A Norma l 1,250
A Pl us 1,155 A Pl us 1,155 A Plus 1,375 A Pl us 1,375
Cooling/HP
Speed
Adjust
Tap CFM* Electric Heat
Adjust
Tap CFM* Cooling/HP Speed
Adjust
Tap CFM* Electric Heat
Adjust
Tap CFM*
D Mi nus 720 D Mi nus 720 D Mi nus 1,103 D Mi nus 1,103
D Norma l 800 D Norma l 800 D Norma l 1,225 D Norma l 1,225
D Pl us 880 D Pl us 880 D Pl us 1,348 D Pl us 1,348
C Mi nus 900 C Mi nus 900 C Mi nus ** 1,260 C Mi nus ** 1,260
C Norma l 1,000 C Norma l 1,000 C Norma l 1,400 C Norma l 1,400
C Pl us 1,100 C Pl us 1,100 C Pl us 1,540 C Pl us 1,540
B Mi nus 990 B Mi nus 990 B Minus 1,530 B Mi nus 1,530
B No rma l ** 1,100 B Norma l ** 1,100 B Norma l 1,700 B Norma l 1,700
B Pl us 1,210 B Pl us 1,210 B Plus 1,870 B Pl us 1,870
A Mi nus 1,125 A Mi nus 1,125 A Mi nus 1,620 A Mi nus 1,620
A Norma l 1,250 A Norma l 1,250 A Norma l 1,800 A Norma l 1,800
A Pl us 1,375 A Pl us 1,375 A Plus 1,980 A Pl us 1,980
* @ 0.1 - 0.8 ESP
**FACTORY DEFAULT IS "B" NORMAL
Cooling/HP
Speed
Adjust
Tap CFM* Electric Heat
Adjust
Tap CFM*
D Mi nus 1,103 D Mi nus 1,103
D Norma l 1,225 D Normal 1,225
D Pl us 1,348 D Pl us 1,348
C Mi nus 1,260 C Mi nus 1,260
C Norma l 1,400 C Norma l 1,400
C Pl us 1,540 C Pl us 1,540
B Mi nus 1,530 B Mi nus 1,530
B Norma l 1,700 B Norma l 1,700
B Pl us 1,870 B Pl us 1,870
A Minus** 1,620 A Minus** 1,620
A Norma l 1,800 A Norma l 1,800
A Pl us 1,980 A Pl us 1,980
* @ 0.1 - 0.8 ESP
APH1624M41 APH1630M41
APH1636M41 APH1642M41
** FACTORY DEFAULT IS "C" MINUS
APH1648M41
** FACTORY SETTING IS "A" MINUS
* @ 0.1 - 0.8 ESP
**FACTORY DEFAULT IS "B" MINUS
* @ 0.1 - 0.8 ESP
**FACTORY DEFAULT IS "B" NORMAL
* @ 0.1 - 0.8 ESP

19
APH16 CFM OUTPUT AND DIP SWITCH SETTINGS
CFM Output
for DIP Switch Combinations 5-6 (Cooling/Heating).
DIP Switch Settings
for Single and Two-Stage Thermostats
MODEL SWITCH
3
SWITCH
4THERMOSTAT
N/A ON Single Stage
N/A OFF Two-Stage
AP H 1 6* *
CFM Output
for DIP Switch Combinations 1-2 (Electric Heat)
Adjustments Through Dip Switch Combinations
7-8
CFM SWITCH
7
SWITCH
8
+10% On Off
Normal Off Off
-1 0% O ff On
MODEL SPEED
TAP
SWITCH
1
SWITCH
2
ELECTRIC
HEAT (CFM)
AOff Off 1050(F)
BOn Off 950
COff On 825
DOn On 700
AOff Off 1250(F)
BOn Off 1100
COff On 1000
DOn On 800
AOff Off 1250(F)
BOn Off 1100
COff On 1000
DOn On 800
AOff Off 1800
BOn Off 1700
COff On 1400(F)
DOn On 1225
AOff Off 1800(F)
BOn Off 1700
COff On 1400
DOn On 1225
(F) Factory Setting
APH1624
APH1630
APH1642
APH1648
APH1636
MODEL SPEED
TAP
SWITCH
5
SWITCH
6
COOLING/HP
CFM
AOff Off 1050(F)
BOn Off 950
COff On 825
DOn On 700
AOff Off 1250(F)
BOn Off 1100
COff On 1000
DOn On 800
AOff Off 1250(F)
BOn Off 1100
COff On 1000
DOn On 800
AOff Off 1800
BOn Off 1700
COff On 1400(F)
DOn On 1225
AOff Off 1800(F)
BOn Off 1700
COff On 1400
DOn On 1225(F)
(F) Factory Setting
APH1624
APH1630
APH1636
APH1642
APH1648

20
MEDIUM CHASSIS
APH1624M41*
APH1630M41*
APH1636M41*
LARGE CHASSIS
APH1642M41*
APH1648M41*
DIMENSIONS
MINIMUM CLEARANCES
3"
MIN
12" MIN 36" MIN
(FOR SERVICE)
.
48" MIN
1
2"MIN
36" MIN
(FOR
SERVICE)
NOTE: Roofoverhang
shouldbe no morethan 36”
BLOWER
A
CCESS PANEL
?
?
2 34
51
47
SUPPLY
1 3/8
A
RETURN
POWER
WIRE
ENTRANCE
4 1/8
2 1/8
6 ½
16
16
5 ½
B
B
CONTROL
WIRE
ENTRANCE
CONDENSATE
DRAIN
CONNECTION
3/4” NPT FEMALE
18 7/8
SUCTION/LIQUID
PRESSURE PORT
3
8