background image

11 

SYSTEM OPERATION

CIRCULATOR BLOWER SPEED ADJUSTMENT

WARNING

HIGH

 

VOLTAGE

D

ISCONNECT 

ALL

 POWER BEFOR CHANGING SPEED TAPS.

M

ULTIPLE POWER SOURCES MAY BE PRESENT. 

F

AILURE TO DO

SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

This furnace is equipped with a multi-speed ECM motor. 

Two wiring harnesses connect the motor to the integrated 

control board and furnace power supply. The line voltage 

(115 VAC) power supply to the motor is constant and not 

switched by the control board. Motor operation is also de

-

pendent on a 24 VDC signal on one of the four speed taps 

on the motor. The airflow tables for heating and cooling 

speeds show the relationship between airflow (CFM) and 

external static pressure for each size furnace.

T

O

 

AVOID

 

PERSONAL

 

INJURY

 

OR

 

DEATH

 

DUE

 

TO

 

ELECTRICAL

 

SHOCK

TURN

 OFF 

POWER

 

TO

 

THE

 

FURNACE

 

BEFORE

 

CHANGING

 

SPEED

 

TAPS

.

WARNING

Circulator Blower Speed

 1. Motor speed Tap wiring must remain in factory position 

on the control board and motor.

 2. There are 4 speed Tap wires to the motor T1, T2, T3, 

T4.

3. There are 5 speeds available, depending on DIP switch 

settings and found in air flow table for each size fur

-

nace.

 4. Heating  input  (W1/  W2)  always  has  priority  over  all 

other thermostat input.

 5. Cooling input (YLo/ Y) has priority over continuous fan 

input.

 6. Continuous fan input (G) has lowest priority.

*The blower speed wiring connections must remain in 

factory position

1.  Refer to the air flow table for your specific model fur

-

nace.

2.  If a cooling or heat pump condensing unit is being used 

in conjunction with this furnace, the three DIP switches 

in S2 are used to select the proper cooling speeds to 

match the outdoor unit size. Typical CFM requirements 

are 400 CFM / Ton.

3.  Turn OFF power to the furnace.
4.  Select the cooling blower speeds that match the instal

-

lation requirements from the airflow table in this manual 

or the Installation Manual, If factory cooling speeds do 

not match the installation requirements, the dip switch 

settings must be changed from factory position

5.  Turn ON power to furnace.
6.  Verify proper temperature rise in heat modes and CFM 

in cooling modes

CIRCULATING AIR AND FILTERS

DUCTWORK - AIR FLOW

Duct systems and register sizes must be properly designed 

for the C.F.M. and external static pressure rating of the 

furnace.  Ductwork should be designed in accordance with 

the recommended methods of "Air Conditioning Contractors 

of America" manual D.
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.
A  return  air  filter  is  not  supplied  with  the  furnace. The 

installer must supply a means of filtering all of the return 

air. Filter(s) shall comply with UL900 or CAN/ULC-S111 

Standards. If the furnace is installed without filters, and is 

not covered by the warranty.

Upflow furnaces with air delivery of less than 1800 CFM: 

Use one side return or one bottom return ductwork con

-

nection.

Upflow furnaces with air delivery of 1800 CFM or higher:

Use two side returns or one side return and one bottom 

return connection.
Counterflow Furnaces must have a return air duct connec

-

tion attached to the end of the furnace (top of the furnace 

when installed vertically) whether the furnace is installed 

vertically of horizontally. Filters must be installed externally 

to the furnace cabinet, in the return air plenum or centrally 

located.
Guide dimples locate the side and bottom return cutout 

locations. Use a straight edge to scribe lines connecting 

the dimples. Cut out the opening on these lines. An under

-

sized opening will cause reduced airflow. For bottom return 

connection, remove the bottom of the cabinet before setting 

the furnace on the raised platform or return air duct.
A closed return duct system must be used, with the return 

duct connected to the furnace. 

NOTE:

 Ductwork must never 

be attached to the back of the furnace.

 Supply and return 

connections to the furnace may be made with flexible joints 

to reduce noise transmission, if desired. If a central return 

is used, a connecting duct must be installed between the 

unit and the utility room wall so the blower will not interfere 

with combustion air or draft. The room, closet, or alcove 

must not be used as a return air chamber.
When the furnace is used in connection with a cooling unit, 

the furnace should be installed in parallel with or on the 

upstream side of the cooling unit to avoid condensation in 

the heating element. With a parallel flow arrangement, the 

dampers or other means used to control the flow of air must 

be adequate to prevent chilled air from entering the furnace 

and, if manually operated, must be equipped with means 

to prevent operation of either unit unless the damper is in 

the full heat or cool position.
When the furnace is heating, the temperature of the return 

air entering the furnace must be between 

55°F

 and 

100°F

Summary of Contents for Amana ACEC80

Page 1: ...een trained to install adjust ser vice or repair hereinafter service the equipment specified in this manual should service the equipment The manufac turer will not be responsible for any injury or pro...

Page 2: ...t wires correctly Verify proper operation after servicing WARNING FIRE EXPLOSION OR CARBON MONOXIDE POISONING HAZARD Failure to replace with proper control could result in fire explosion or carbon mon...

Page 3: ...ctly which has been under water C Use only your hand to move the gas control switch or knob Never use tools If the gas control switch or knob D Do not use this appliance if any part has been under wat...

Page 4: ...a se produit demandez immediatement a un reparateur qualifie d inspecter l appareil et de remplacer toute piece du systeme de controle et toute commande de gaz ayant ete dans l eau 0140F00002P INSTRUC...

Page 5: ...S call 1 713 861 2500 Not a technical assistance line for dealers Your telephone company will bill you for the call B10259 216 CO can cause serious illness including permanent brain damage or death Ad...

Page 6: ...Upflow Horizontal Major Revision C Downflow Horizontal A Initial Release K Dedicated Upflow B 1st Revision D Dedicated Downflow Nox Motor N Natural Gas V Variable Speed X Low NOx E High Efficiency S...

Page 7: ...red airflow Solid one piece wrapped cabinet made from 20 gauge steel for support and durability Available in A B C D cabinet widths AMHP 250 UPD Whole House HEPA Air Cleaner This Clean Comfort product...

Page 8: ...midity levels This control features a moisture sensitive nylon element and also provides positive ON OFF settings for manual operation The control is a normally closed switch that opens on humidity ri...

Page 9: ...he furnace must be electrically ground ed in accordance with local codes or in their absence with the latest edition of The National Electric Code ANSI NFPA 70 and or The Canadian Electric Code CSA C2...

Page 10: ...stat with only one heating stage may be used to control this furnace The application of a single stage thermostat offers a timed transition from low to high fire The furnace will run on low stage for...

Page 11: ...ditioning Contractors of America manual D 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 He...

Page 12: ...Air Heating and Ventilating Systems Pamphlets No 90A and 90B A return air filter is not supplied with the furnace The installer must supply a means of filtering all of the return air Filter s shall co...

Page 13: ...ON 90 OFF OFF 120 OFF ON 150 ON OFF 180 ON ON FACTORY SETTING Dip Switch Switch Group Function S3 S3 Heating Fan Off Delay Purpose Thermostat Setup S1 1 2 3 4 Cooling CFM Switches Heating Fan Off Dela...

Page 14: ...ng detected the control will turn off the gas valve and igniter The control then enters the post purge routine The post purge time will be increased to 60 seconds After completing the post purge the c...

Page 15: ...ronic air cleaner will also be energized After the thermostat is satisfied the compressor is de energized Following the 60 second Cool Mode Fan Off Delay period the cool circulator and air cleaner rel...

Page 16: ...E W1 Y P2 8 CALL FOR REVERSING VALVE P3 5 C C BLOWER FAN DEMAND OUTPUT P3 3 P1 8 Y STAT Y FURN C P3 2 P1 1 P3 8 REVERSING VALVE OUTPUT BREAK FOR ODT FURNACE DEMAND OUTPUT P1 3 R 24VAC K4 HP CALL FOR...

Page 17: ...rectification the common side of the secondary voltage 24 V is cabinet grounded If you were to bench test a transformer the primary neutral and secondary common must be connected together for testing...

Page 18: ...79 947 45 20 40 80 160 400 20 45 90 180 360 900 46 78 157 391 21 43 86 171 343 857 47 19 38 76 153 383 22 41 82 164 327 818 48 75 150 375 23 39 78 157 313 783 49 147 367 24 37 75 150 300 750 50 18 36...

Page 19: ...takes forty 40 seconds for the hand on the cubic foot dial to make one complete revolution with all appliances off except the furnace Take this information and locate it on the gas rate chart Observe...

Page 20: ...proceeding with work Furnace does not operate three Amber flashes on control board None Three repeating flashes None W2 call present without W1 Faulty thermostat or thermostat wiring or improperly co...

Page 21: ...Furnace does not operate nine Red flashes on control board None None Nine repeating flashes Improper grounding or reverse polarity 115 volt hot neutral supply to furnace reversed hot wire door switch...

Page 22: ...ill indicate this period by RAPID GREEN FLASH for 5 seconds to 10 seconds The LED will flash three green flashes when the memory has been cleared The ignition control is equipped with a momentary push...

Page 23: ...of the same gauge or its equivalent CHECKING THERMOSTAT DISCONNECT ALL POWER BEFORE SERVICING WARNING 1 Remove the blower compartment door to gain access to the thermostat low voltage wires located a...

Page 24: ...ERVICING OR INSTALLING THIS UNIT MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH CHECKING AIR CIRCULATOR BLOWER MOTOR MULTI SPEED ECM MOTOR DI...

Page 25: ...URE RISE The more air CFM being delivered through a given fur nace the less the rise will be so the less air CFM being delivered the greater the rise The temperature rise should be adjusted in accorda...

Page 26: ...nace If the limit circuit opens and does not close within five min utes the control assumes the blower has failed the RED LED will flash ELEVEN times If the limit circuit opens and does not close with...

Page 27: ...S UNIT MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH 1 Remove blower compartment door to gain access to the auxiliary 2 Remove the wires fro...

Page 28: ...ECT 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 1 Remove burner compartment door to gai...

Page 29: ...nace is being converted for use with LP gas Orifices should be treated with care in order to prevent dam age They should be removed and installed with a box end wrench in order to prevent distortion I...

Page 30: ...nace at the manual shutoff valve and disconnect manometer Reinstall plug before turning on gas to furnace 6 Turn OFF any unnecessary gas appliances stated in step 3 Gas Manifold Pressure Measurement a...

Page 31: ...NCES OPERATING CAUTION Gas Valve On Off Selector Switch Regulator Vent High Fire Regulator Adjust Low Fire Regulator Adjust Honeywell Model VR9205 Two Stage Measuring Gas Pressure Two Stage Valves Con...

Page 32: ...ccurring with inadequate venting caused by a restricted or blocked vent pipe 1 Remove burner compartment door to gain access to pressure switch es 2 Remove wires from the pressure switch es electrical...

Page 33: ...e should be less than 2 ohms The ignition control is a combination electronic and elec tromechanical device and is not field repairable Complete unit must be replaced LINE VOLTAGE NOW PRESENT WARNING...

Page 34: ...will ensure that all furnace components are in proper working order and that the heating system functions appropriately Pay particular attention to the following items Repair or service as necessary...

Page 35: ...ECTRICAL SHOCK INJURY OR DEATH DO NOT REMOVE ANY INTERNAL COMPARTMENT COVERS OR ATTEMPT ANY ADJUSTMENT CONTACT A QUALIFIED SERVICE AGENT AT ONCE IF AN ABNORMAL FLAME APPEARANCE SHOULD DEVELOP Periodic...

Page 36: ...ERS GAS VALVE TWO STAGE OVERCURRENT CONNECTOR 2 CIRCUIT LOW VOLTAGE 24V GND WH CHASSIS GROUND 2 3 IGNITER SURFACE HOT 2 YL PU 2 C BLOWER DRAFT INDUCED BK PM BK BLOWER COMPARTMENT 115 VAC 1 OVERCURRENT...

Page 37: ...ity products may mean a change in specifications without notice GOODMAN BRAND AMANA BRAND PRODUCT REGISTRATION Thank you for your recent purchase Though not required to get the protection of the stand...

Reviews: