Amana AMS81405DN User manual

RT6621027r1
November2013
This manual is to be used by qualified, professionally trained HVAC technicians
only. Goodman does not assume any responsibility for property damage or
personal injury due to improper service procedures performed by an unqualified
person.
•RefertoServiceManual RS6612006for troubleshootinginformation.
•RefertotheappropriatePartsCatalogforpartnumber information.
•Model numbers listed on page 3.
AMS8 33-3/8" Gas Furnace Units
80%AFUE, Single Stage,
Multi-Speed,UpflowHorizontal
TECHNICAL MANUTECHNICAL MANU
TECHNICAL MANUTECHNICAL MANU
TECHNICAL MANUALAL
ALAL
AL
Copyright © 2013 Goodman Company, L.P.
®
is a registered trademark of Maytag Corporation or its related companies and is used under license to
Goodman Company, L.P., Houston, TX. All rights reserved.
®
®
®
®

PRODUCT IDENTIFICATION
2
The model and manufacturing number are used for positive identification of component parts used in manufacturing.
Please use these numbers when requesting service or parts information.
WARNING
WARNING 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.
Installation and repair of this unit
should be performed ONLY by
individuals meeting the requirements of an "entry level
technician"asspecifiedbytheAir-Conditioning,Heating,
andRefrigerationInstitute(AHRI). Attemptingtoinstallor
repair this unit without such background may result in
product damage, personal injury or death.
Goodman will not be responsible
for any injury or property damage
arising from improper service or service procedures. If
you install or perform service on this unit, you assume
responsibility for any personal injury or property damage
which may result. Many jurisdictions require a license to
install or service heating and air conditioning equipment.
WARNING
WARNING WARNING
WARNING
AMS80 060 3 AN AA
1 2 3 45 678 9 10111213
Brand MinorRevision
A- Amana A - InitialRelease
B- 1stRevision
Configuration
M - Upflow/Horizontal MajorRevision
A - InitialRelease
GasVale /Motor B-1stRevision
H - Convertible 2 Stage / Single Speed
S -Single Stage / Single Speed Nox
N- Natural Gas
AFUE X-LowNOx
97 - 97%AFUE
80 - 80%AFUE Cabinet Width
A - 14"
MBTU/h B- 17.5"
40- 40,000 C- 21"
60- 60,000 D- 24.5"
80- 80,000
100-100,000 MaximumCFM
120-120,000 3 - 1200 CFM
140-140,000 4 - 1600 CFM
5 - 2000 CFM

3
PRODUCT IDENTIFICATION
The model and manufacturing number are used for positive identification of component parts used in manufacturing.
Pleaseusethese numbers when requesting service orpartsinformation.
AMS80403AXAA
AMS80603AXAA
AMS80604BXAA
AMS80804BXAA
AMS80805CXAA
AMS81005CXAA
AMS81205DXAA
AMS81405DNBA
The United States Environmental Protection Agency (“EPA”) has issued various regulations re-
garding the introduction and disposal of refrigerants introduced into this unit. Failure to follow
these regulations may harm the environment and can lead to the imposition of substantial fines.
These regulations may vary by jurisdiction. Should questions arise, contact your local EPA office.
WARNING
WARNING
Do not connect or use any device
thatisnotdesigncertifiedbyGood-
man for use with this unit. Serious
property damage, personal injury, reduced unit perfor-
mance and/or hazardous conditions may result from the
use of such non-approved devices.
WARNING
WARNING 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
appliance.
WARNING
WARNING

4
PRODUCT DESIGN
GasCodeNFPA54/ANSIZ223.1 -latestedition.InCanada,
the furnaces must be vented in accordance with the Na-
tional Standard of Canada, CAN/CSA B149.1 and CAN/
CSAB149.2 - latest editionsandamendments.
NOTE: Theverticalheightof the Category I venting system
must be at least as great as the horizontal length of the
ventingsystem.
Accessibility Clearances (Minimum)
Unobstructed front clearanace of 24" for servicing is rec-
ommended.
SW B
103 6 1 1
* 24" clearnace for serviceability recommended.
MINIMUM CLEARANCE TO COMBUSTIBLE MATERIALS - INCHES
** Single Wall Vent (SW) to be used only as a conncetor.
Refer to the venting tables outlined in the Installation Manual for
additional venting requirements.
Vent
Sides TopRear Front*
Note: Inall cases accessibility clearanceshalltakeprece-
dence over clearances from the enclosure where accessi-
bility clearances are greater. All dimensions are given in
inches.
HighAltitudeDerate
IMPORTANT NOTE: The furnace as shipped requires no
change to run between 0 - 5500 feet. Do not attempt to
increase the firing rate by changing orifices or increasing
themanifoldpressurebelow5500feet.Thiscancausepoor
combustionandequipment failure.
Highaltitudeinstallationsabove5500feetmayrequireboth
a pressure switch and an orifice change. These changes
are necessary to compensate for the natural reduction in
the density of both the gas fuel and the combustion air at
higheraltitude.
For installations above 5500 feet, please refer to your dis-
tributorforrequired kit(s). Contact the distributorforatabu-
lar listing of appropriate manufacturer’s kits for propane
gasand/orhighaltitudeinstallations.The indicated kitsmust
be used to insure safe and proper furnace operation. All
conversions must be performed by a qualified installer, or
service agency.
GeneralOperation
The AMS8 furnaces are equipped with an electronic igni-
tion device used to light the burners and an induced draft
blowertoexhaustcombustionproducts.
An interlock switch prevents furnace operation if the inner
blowerdoor is not inplace.Keepthe blower access doorin
place except for inspection and maintenance. (See illus-
tration on pages 5 and 6.)
This furnace is also equipped with a self-diagnosing elec-
tronic control module. In the event a furnace component is
not operating properly, the control module LED will flash
on and off in a factory-programmed sequence, depending
ontheproblemencountered.Thislightcanbeviewedthrough
theobservationwindowin the blower access door. Referto
the Troubleshooting Chart for further explanation of the
LED codes and Abnormal Operation - Integrated Ignition
Control section in the Service Instructions for an explana-
tionof the possibleproblem.
Theratedheatingcapacityof the furnace should be greater
thanor equal to thetotalheatloss of the areatobe heated.
The total heat loss should be calculated by an approved
methodorinaccordancewith “ASHRAE Guide” or “Manual
J-LoadCalculations”publishedbytheAirConditioningCon-
tractors of America.
*Obtain from: American National Standards Institute 1430
Broadway New York, NY 10018
LocationConsiderations
• The furnace should be as centralized as is practical
with respect to the air distribution system.
• Do not install the furnace directly on carpeting, tile,
orcombustible material other thanwoodflooring.
• When installed in a residential garage, the furnace
mustbepositionedsotheburnersandignitionsource
are located not less than 18 inches (457 mm) above
the floor and protected from physical damage by ve-
hicles.
Notes:
WARNING
TO PREVENT POSSIBLE PERSONAL INJURY OR DEATH DUE TO ASPHYXIATION,
THIS FURNACE MUST BE CATEGORY IVENTED. DO NOT VENT USING
CATEGORY III VENTING.
CategoryI Venting is ventingat a non-positivepressure. A
furnace vented as Category I is considered a fan-assisted
appliance and the vent system does not have to be “gas
tight.” NOTE: Single stage gas furnaces with induced
draft blowers draw products of combustion through a heat
exchanger allowing, in some instances, common venting
with natural draft appliances (i.e. water heaters). All instal-
lations must be vented in accordance with National Fuel

5
COMPONENT IDENTIFICATION
Upflow/Horizontal
1 TubularHeat Exchanger
2 PressureSwitch
3 FluePipeConnection
4 InducedDraft Blower
5 GasLineEntrance
6 GasValve
7 RolloutLimit
8 JunctionBox
?
Pressure Switch
Tubular Heat Exchanger
Flue Pipe Connection
Gas Line Entrance
(Alternate)
Induced Draft Blower
Gas Line
Entrance
Gas Valve
Rollout Limit
Junction Box
Wiring Harness
Grommet
Gas Manifold
Inshot Burner
Blower Door
Interlock Switch
Integrated Control Module
Transformer Circulator Blower
1
2
3
4
5
6
78
9
9 WiringHarnessGrommet
10 GasManifold
11 InshotBurner
12 Transformer
13 IntegratedControl Module
14 Blower Door InterlockSwtich
15 CirculatorBlower
16 Gas Line Entrance(Alternate)
Note: Primary Limit Not Shown

PRODUCT DIMENSIONS
6
AMS8
A
lt. Gas Inlet
High Voltage Inlet
Low Voltage
A
lt. Gas Inlet
A
lt. High Voltage
Alt. LowVoltage
MODEL A B
AMS80403AX
AMS80603AX
AMS80604BX
AMS80804BX
AMS80805CX
AMS81005CX
AMS81205DX
AMS81405DN 24 - 1/2 23
21 19 - 1/2
14 12 - 1/2
17 - 1/2 16

7
PRODUCT DIMENSIONS AMS8
For installations in Canada, the GMS furnaces are certifed only to 4,500 ft.
* Negative pressure readings are in inches of water column (*w.c.)
Model
Trip Point
IDBlower
Pressure
Switch
IDBlower
Pressure
Switch
Part #
AMS80403AX -0.70 B1370158
AMS80603AX -0.75 B1370179
AMS80604BX -0.75 B1370179
AMS80804BX -0.70 B1370158
AMS80805CX -0.75 B1370179
AMS81005CX -0.70 B1370158
AMS81205DX -0.80 0130F00042
AMS81405DN -0.80 0130F00042
Pressure Switch Trip Points
Part Number 20162901 20162904 20162903
Open Setting (°F) 210 150 160
AMS80403AX 1 --- ---
AMS80603AX --- 1 ---
AMS80604BX --- 1 ---
AMS80804BX --- 1 ---
AMS80805CX --- --- 1
AMS81005CX --- 1 ---
AMS81205DX --- --- 1
AMS81405DN --- --- 1
PRIMARY LIMIT
Part Number 10123529
Open Setting (°F) 300
AMS80403AX 2
AMS80603AX 2
AMS80604BX 2
AMS80804BX 2
AMS80805CX 2
AMS81005CX 2
AMS81205DX 2
AMS81405DN 2
ROLLOUT LIMIT SWITCHES Part Number 0130F00038
Open Setting (°F) 120
AMS80403AX 1
AMS80603AX 1
AMS80604BX 1
AMS80804BX 1
AMS80805CX 1
AMS81005CX 1
AMS81205DX 1
AMS81405DN 1
AUXILIARY LIMIT SWITCHES

8
PRODUCT DESIGN
Thermostats:
Filters:
Filters are required with this furnace and must be provided by the installer. The filters used must comply with UL900 or
CAN/ULCS111standards.Installing this furnace without filterswill void the unitwarranty
Upflow Filters
Cabinet
Width
(in.)
Nominal
Filter Size
(in.)
Approx.
Flow Area
(in2)
Cabinet
Width
(in.)
Nominal
Filter Size
(in.)
Approx.
Flow Area
(in2)
All 16 x 25 x 1 400 17-1/2 14 x 25 x 1 350
21 16 x 25 x 1 400
24-1/2 20 x 25 x 1 500
BOTTOM RETURNSIDE RETURN
RefertoMinimumFilterAreatablestodeterminefilterarearequirement.NOTE:Filterscanalsobeinstalledelsewherein
the duct system such as a central return.
It is recommended that a single-stage heat, non-power robbing thermostat be used. Refer to the product marketing
literaturefor a complete listof thermostats offered.
FURNACE INPUT FILTER SIZE
40M 320 in2
60M 483in2
80M 640 in2
100M 800 in2
120M 738 in2
140M 738 in
2
DISPOSABLE NOMINAL300 F.M. FACE VELOCITY
MINIMUM FILTER SIZES for DISPOSABLE FILTERS

FURNACE SPECIFICATIONS
9
1. These furnaces are manufactured for natural gas operation. Optional Kits are available for conversion to propane gas operation.
2. For elevations above 2000 ft. the rating should be reduced by 4% for each 1000 ft. above sea level. The furnace must not be derated, orifice
changes should only be made if necessary for altitude.
3. The total heat loss from the structure as expressed in TOTAL BTU/HR must be calculated by the manufactures method in accordance with the
"A.S.H.R.A.E.GUIDE" or "MANUAL J-LOAD CALCULATIONS"published by the AIR CONDITIONINGCONTRACTORS OF AMERICA. The total
heat loss calculated should be equal to or less than the heating capacity. Output based on D.O.E. test procedures, steady state efficiency times
output.
4. Minimum Circuit Ampacity calculated as: (1.25 x Circulator Blower Amps) + I.D. Blower Amps.
Unit specifications are subject to change without notice. ALWAYS refer to the unit's serial plate for the most up-to-date general and electrical information.
(1) Wire size should be determined in accordance with National Electrical Codes. Extensive wire runs will require larger wire sizes.
(2) Maximum Overcurrent Protection Device: May use Time Delay Fuse or HACR type Circuit Breaker of the same size as noted.
(3) See Installation Instructions for appropriate vent diameter, length and number of elbows.
AMS8
MODEL
AMS80403AX AMS80603AX AMS80604BX AMS80804BX AMS80805CX AMS81005CX AMS81205DX AMS81405DN
Btuh Input (US) High Fire 40,000 60,000 60,000 80,000 80,000 100,000 120,000 140,000
Output (US) High Fire 32,000 48,000 48,000 64,000 64,000 80,000 96,000 112,000
A.F.U.E. 80% 80% 80% 80% 80% 80% 80% 80%
Rated External Static (" w.c.) .20 - .50 .20 - .50 .20 - .50 .20 - .50 .20 - .50 .20 - .50 .20 - .50 .20 - .50
Temperature Rise (°F) 25 - 55 25 -55 20 - 50 35 - 65 35 - 65 35 - 65 40 - 70 40 - 70
High Stage Pressure Switch
Trip Point (" w.c.) -0.70 -0.75 -0.75 -0.70 -0.75 -0.70 -0.80 -0.80
Blower Wheel (D" x W") 10 X 6 10 x 6 10 x 8 10X8 10x10 10X10 11x10 11x10
BlowerHorsepower 1/3 1/3 1/2 1/2 1/2 1/2 3/4 3/4
BlowerSpeeds 44444444
Max CFM @ 0.5 E.S.P. 1298 1157 1883 1725 1960 1974 2131 2131
Power Supply 115-60-1 115-60-1 115-60-1 115-60-1 115-60-1 115-60-1 115-60-1 115-60-1
Minimum Circuit Ampacity (MCA)(1) 8.5 8.5 12.9 12.9 12.9 12.9 15.2 15.2
Maximum Overcurrent Device(2) 15 15 15 15 15 15 15 15
Transformer (VA) 40 40 40 40 40 40 40 40
Heat Anticipator (Amps) 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7
Primary Limit Setting (°F) 210° 150° 150° 150° 160° 150° 160° 160°
Auxiliary Limit Setting (°F) 120° 120° 120° 120° 120° 120° 120° 120°
Rollout Limit Setting (°F) 300° 300° 300° 300° 300° 300° 300° 300°
Gas Supply Pressure
(Natural/Propane) (" w.c.) 7 / 11 7 / 11 7 / 11 7 / 11 7 / 11 7 / 11 7 / 11 7 / 11
Manifold Pressure
(Natural/Propane)High Stage (" w.c.) 3.5 / 10 3.5 / 10 3.5 / 10 3.5 / 10 3.5 / 10 3.5 / 10 3.5 / 10 3.5 / 10
Orifice Size (Natural/Propane) #45 / #55 #45 / #55 #45 / #55 #45 / #55 #45 / #55 #45 / #55 #45 / #55 #43 / #55
NumberofBurners 23344566
Vent Connector Diameter (inches)(3 ) 44444444
Shipping Weight (lbs.) 84 88 98 106 114 118 130 130

BLOWER PERFORMANCE SPECIFICATIONS
10
NOTES:
• CFM in chart is without filter(s). Filters do not ship with this furnace, but must be provided by the installer.
• All furnaces ship as hig-speed cooling. Installer must adjust blower cooling speed as needed.
• For most jobs, about 400 CFM per ton when cooling is desirable
• INSTALLATION IS TO BE ADJUSTED TO OBTAIN TEMPERATURE RISE WITHIN THE RANGE SPECIFIED ON THE RATING PLATE.
• The chart is for information only. For satisfactory operation, external static pressure must not exceed values shown on the rating plate. The shaded area
insicated ranges in excess of maximum static pressure allowed when heating.
• The dashed (---) areas indicate a temperature rise not recommended for this model.
• At higher altitudes, a properly de-rated unit will have approximatley the same temperature rise at a particular CFM, while ESP at the CFM will be lower.
AMS8
Tons AC
at 0.5" 0.6 0.7 0.8
ESP CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM
HIGH 3.0 1521 ---- 1466 ---- 1414 ---- 1373 ---- 1298 ---- 1243 1164 1075
AMS80403AX MED 2.5 1160 26 1160 26 1132 26 1121 26 1082 27 1042 997 925
(MEDIUM) MED-LO 2.0 961 31 955 31 948 31 932 32 913 33 882 821 803
LOW 1.5 781 38 785 38 781 38 773 38 761 32 745 716 668
HIGH 3.0 1422 31 1352 33 1307 34 1197 37 1157 38 1092 1075 983
AMS80603AX MED 2.5 1098 40 1081 41 1051 42 1039 43 1021 44 983 924 868
(MEDIUM) MED-LO 2.0 919 48 913 49 892 50 847 ---- 829 ---- 818 792 728
LOW 1.5 758 ---- 741 ---- 741 ---- 733 ---- 699 ---- 677 649 626
HIGH 4.0 2134 21 2100 21 2042 22 1975 23 1883 24 1786 1700 1601
AMS80604BX MED 3.5 1668 27 1663 27 1656 27 1645 27 1616 28 1549 1492 1391
(MEDIUM) MED-LO 3.0 1419 31 1426 31 1426 31 1432 31 1419 31 1378 1328 1261
LOW 2.5 1134 39 1145 39 1166 38 1171 38 1160 38 1144 1111 1071
HIGH 4.0 2051 ---- 1983 ---- 1895 ---- 1812 ---- 1725 ---- 1627 1530 1439
AMS80804BX MED 3.5 1736 ---- 1708 35 1652 36 1611 37 1540 38 1475 1394 1307
(MEDIUM) MED-LO 3.0 1693 35 1668 36 1459 41 1429 41 1389 43 1339 1274 1204
LOW 2.5 1200 49 1185 50 1180 50 1173 51 1158 51 1125 1125 1080
HIGH 5.0 2290 ---- 2229 ---- 2155 ---- 2047 ---- 1960 ---- 1837 1712 1584
AMS80805CX MED 4.0 1852 ---- 1820 ---- 1777 ---- 1719 --- 1641 36 1567 1469 1382
(MEDIUM) MED-LO 3.5 1615 37 1592 37 1556 38 1516 39 1470 40 1405 1346 1235
LOW 3.0 1290 46 1285 46 1265 47 1235 48 1214 49 1174 1044 904
HIGH 5.0 2323 ---- 2225 ---- 2120 35 2040 36 1974 38 1801 1688 1577
AMS81005CX MED 4.0 1858 40 1847 40 1799 41 1744 42 1674 44 1577 1493 1399
(MEDIUM) MED-LO 3.5 1596 46 1587 47 1571 47 1552 48 1493 50 1397 1326 1217
LOW 3.0 1291 57 1272 58 1261 59 1257 59 1205 61 1168 1118 1060
HIGH 5.0 2469 ---- 2389 ---- 2300 ---- 2223 40 2131 42 2027 1902 1786
AMS81205DX MED 4.0 1575 56 1558 57 1545 58 1513 59 1500 59 1419 1354 1271
(MEDIUM) MED-LO 3.5 1402 63 1380 64 1343 66 1319 67 1296 69 1245 1183 1106
LOW 3.0 1200 ---- 1186 ---- 1161 ---- 1127 ---- 1082 ---- 1042 995 926
HIGH 5.0 2469 42 2389 43 2300 45 2223 47 2131 49 2027 1902 1786
AMS81405DN MED 4.0 1575 66 1558 67 1545 67 1513 69 1500 69 1419 1354 1271
(MEDIUM) MED-LO 3.5 1402 ---- 1380 ---- 1343 ---- 1319 ---- 1296 ---- 1245 1183 1106
LOW 3.0 1200 ---- 1186 ---- 1161 ---- 1127 ---- 1082 ---- 1042 995 926
(CFM & Temperature Rise vs. External Static Pressure)
0.1 0.2 0.3 0.4 0.5
Model
Heating Speed
AsShipped
Motor
Speed
EXTERNAL STATIC PRESSURE (Inches Water Column)

11
BLOWER PERFORMANCE SPECIFICATIONS
30 40 50 60 70 80 90 110 120
100 130 140 150
100
90 80
70 60 50
40 30 20
10
OUTPUT BTU/HR x 1000
BTU OUTPUT vs TEMPERATURE RISE CHART
TE
M
PE
R
A
TU
R
E
R
ISE
600 CFM
700
900
1000
1100
1200
1400
1600
1800
2000
2200
2400 CFM
FORMULAS
BTU OUTPUT = CFM x 1.08 x RISE
RISE = BTU OUTPUT
1.08 ÷ CFM
800

12
WIRING DIAGRAMS
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 OR INSTALLING THIS UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
AMS8
CAP
BK
(
HI
)
AUXILIARY
INTEGRATED
PROPERLY POLARIZED AND GROUNDED.
SERVICING.WIRING TO UNIT MUST BE
WARNING:DISCONNECT POWER BEFORE
FUSE
GC
6
3
9
12
WYRR
54
12
87
11 10
OR
LED
DIAGNOSTIC
LINE-H XFMR-H HEAT-H COOL-H
CONTROL MODULE
BK
115 VAC HOT AND PARK TERMINALS
2
1
GR
PU
XFMR
BK
BK
BK
115V
24V
115 VAC NEUTRAL
BR
LIMITS
WH
WH(N)
RD (LOW)
OR (MED LOW)
BL (MED)
CICULATOR BLOWER
24V THERMOSTAT CONNECTIONS
RO2 (11)
LIMIT
GND (8)
HUMIDIFIER
XFMR (6) GND
G
C
W
YTO
MICRO
R
MV (12)
MVC (9)
AUXILIARY
LIMITCONTROLS
PS (10)
PSO (4)
HLI (7)
HLO (1)
CONTROL MODULE
INTEGRATED
NO
SWITCH
PRESSURE
ID BLOWER
VALVE
M1
GAS
C2
C
AUTO RESET
PRIMARY
MANUALRESET ROLLOUT
LIMITCONTROL(S)
115 VAC
FLAME SENSOR
FP (2)
XFMR-H
XFMR (3)
RO1 (5)
24VAC
HOT SURFACE
IGNITER
INTEGRATED CONTROLMODULE
BR
BR
COOL-H
IGN
IND
ID
BLWR
CIRCULATOR
HEAT-H
COOL
HEAT
BLWR
TRANSFORMER
40 VA
CONTROL
XFMR-N
INTEGRATED CONTROL MODULE
CIR-N
0140F00119-C
5. UNIT MUST BE PERMANENTLY GROUNDED AND CONFORM TO N.E.C. AND LOCAL CODES.
ON SOME MODELS
HUMIDIFIER
24 VAC
INDUCED DRAFT
C. USE COPPER CONDUCTORS ONLY.
BLOWER COMPARTMENT
BURNER COMPARTMENT
REPLACED, IT MUST BE REPLACED WITH WIRING MATERIAL HAVING A TEMPERATURE
3. IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE FURNACE MUST BE
CORRECT COOLING CFM. (SEE SPEC SHEET FOR AIR FLOW CHART)
REQUIREMENTS SO AS TO PROVIDE THE CORRECT HEATING TEMPERATURE RISEAND THE
4. BLOWER SPEEDS MUST BE ADJUSTED BY INSTALLER TO MATCH THE INSTALLATION
INTEGRATED CONTROL
INTERNAL TO
2. MANUFACTURER'S SPECIFIED REPLACEMENT PARTS MUST BE USED WHEN SERVICING.
1. SET HEATANTICIPATOR ON ROOM THERMOSTATAT 0.7 AMPS.
BLOWER
GAS VALVE
PRIMARY LIMIT
BK
GR
WH
IGNITER
SURFACE
HOT
M1
PU
WH
RD
WH
15 PIN PLUG
C
NO
SWITCH
PRESSURE
BR
C2
SENSOR
FLAME
BK
W
H
ROLLOUT LIMITS
RAPID FLASHES = REVERSED 115 VAC POLARITY/VERIFY GND
1 FLASH = SYSTEM LOCKOUT (RETRIES/RECYCLES EXCEEDED)
7 FLASHES = LOW FLAME SIGNAL
5 FLASHES = FLAME SENSE WITHOUT GAS VALVE
4 FLASHES = OPEN HIGH LIMIT
3 FLASHES = PRESSURE SWITCH STUCK OPEN
2 FLASHES = PRESSURE SWITCH STUCK CLOSED
STEADY ON = NORMAL OPERATION
OFF = CONTROL FAILURE
5
0
1
2
3
4
PU
6 FLASHES = OPEN ROLLOUT
COLOR CODES:
PU PURPLE
OR ORANGE
YL YELLOW
6
7
C
BK BLACK
GR GREEN
BR BROWN
PK PINK
RD RED
GY GRAY
BLBLUE
WH WHITE
PU
RATING OF AT LEAST 105
NOTES:
TO 115VAC/ 1 Ø /60 HZ POWER SUPPLY WITH
OVERCURRENT PROTECTION DEVICE
JUNCTIONBOX
MUST BE
WARNING:
SWITCH
WIRING TO UNIT
BEFORE SERVICING.
DISCONNECT POWER
LINE-H
DOOR
AND GROUNDED.
POLARIZED
PROPERLY
LGND
LINE-N
DISCONNECT
N
SWITCH (TEMP.)
FIELD SPLICE
SWITCH (PRESS.)
PROT. DEVICE
OVERCURRENT
EQUIPMENT GND
TERMINAL
JUNCTION
HI VOLTAGE FIELD
HI VOLTAGE(115V)
LOW VOLTAGE FIELD
LOW VOLTAGE (24V)
PLUG CONNECTION
IGNITER
FIELD GND
IND-N
IGN-N
JUNCTION
BOX
OVERCURRENT PROTECTION
POWER SUPPLY WITH
TO 115 VAC/ 1/60HZ
GND
LINE-N
LINE H
DEVICE
DOOR SWITCH
WH
BK
SWITCH LOCATEDINBLOWER
COMPARTMENT ON SOME MODELS
RD
RD
RD
BL
YL
YL
RD BL
BL
PU
YL
YL
BR
OR
OROR
YL
YL
RD RD
WHWH
WH
YL
OR
BK
YL
BR
WH
(SINGLE CONT ROL ON SOME MODELS)
(SINGLE CONTROL ON SOME MODELS)
24 VAC
HUMIDIFIER

13
SCHEMATICS
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.
TYPICALSCHEMATIC
AMS8 * MODEL FURNACES
WR 50T55-289 INTEGRATED IGNITION CONTROL
Thisschematic is forreference only.Not all wiring is asshown above.Always refer tothe appropriatewiring diagramfor the unit being serviced.
.0005
3M K5
K2
HEAT COOL PARK PARK CIR
NEU
K8
GAS
VALVE HIGH
LIMIT AUX
LIMIT
PRESSURE
SWITCH
FLAME
SENSOR
PROBE
IGNITOR
FP IGN GND MV MV PS HLO HLI
CIRCULATOR
BLOWER
XFMR
HOT
XFMR
NEU
24 VAC
TH
RO1
RO2
R
TR
C
Y
G
W
COMPRESSOR
CONTACTOR
COIL
THERMOSTAT
R
Y
G
W
INDUCER
IND
K3 ROLLOUT
SWITCH
K1
FACTORY
JUMPER
FACTORY
JUMPER
PSO
AMS8