Amana Furnace AMH User Manual

®

TECHNICAL MANUTECHNICAL MANU

TECHNICAL MANU

TECHNICAL MANUTECHNICAL MANU

ALAL

AL

ALAL

AMH8 33-3/8" 80% Gas Furnace

80% AFUE, T win Comfort™,

Multi-Speed, Upflow/Horizontal (NOx)

• Refer to Service Manual RS6610004 for installation, operation, and troubleshooting information.

• All safety information must be followed as provided in the Service Manual.

• Refer to the appropriate Parts Catalog for part number information.

• Model numbers listed on page 3.

®

C

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 or services performed by an unqualified person.

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.

Copyright ©2009-2010 Goodman Company, L.P.

US

RT6621017r1

April 2010

PRODUCT IDENTIFICATION

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.

A M H 8 070 3 A X A A

ADDITIONAL
PRODUCT
TYPE:

A: Amana

®

Brand

SUPPLY TYPE:

M: Upflow/Horizontal

FURNA CE TYPE:

H: Twin Comfort

Multi-Speed

TM

AFUE:

8: 80%

CABINET WID TH:

A: 14" C: 21"
B: 17 1/2" D : 24 1/2"

AIRFLOW
CAPABILITY:

3: 1200
4: 1600
5: 2000

FEATURES:

N: Natural Gas

X: Low NOx

MAJOR REVISI ON:

A: Initial Release

MINOR REVISION:

A: Init i al Re leas e

N OMINAL CAPA CITY

045: 45,000 BT UH
070: 70,000 BT UH
090: 90,000 BT UH
11 5: 115,000 BTUH
14 0: 140,000 BTUH

HIGH VOLTAGE!

WARNING

WARNING

WARNING

WARNING

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.

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.

Goodman will not be responsible
for any injury or property damage

WARNING

WARNING

ments of an "entry level technician", at a minimum, as
specified by the Air-Conditioning, Heating, and Refrigera­tion Institute (AHRI). Attempting to install or repair this
unit without such background may result in product
damage, personal injury or death.

Installation and repair of this unit
should be performed
individuals meeting the require-

ONLY by

2

PRODUCT IDENTIFICATION

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.

AMH80453AXC*
AMH80703AXC*
AMH80704BXC*
AMH80903BXC*
AMH80904BXC*
AMH80905CXC*
AMH81155CXC*
AMH81405DXC*

* Indicates minor revision & is not used for order entry or inventory management

WARNING

WARNING

WARNING

WARNING

Serious property damage, personal injury, reduced unit
performance and/or hazardous conditions may result
from the use of such non-approved devices.

The United States Environmental Protection Agency (“EPA”) has issued various regulations re­garding 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.

Do not connect or use any device
that is not design certified by
Goodman for use with this unit.

WARNING

WARNING

do not store combustible materials or use gasoline or
other flammable liquids or vapors in the vicinity of this
appliance.

To prevent the risk of property
damage, personal injury, or death,

3

PRODUCT DESIGN

General Operation

The AMH8 furnaces are equipped with an electronic ignition
device used to light the burners and an induced draft blower
to exhaust combustion products.

An interlock switch prevents furnace operation if the blower
door is not in place. Keep the blower access door in place
except for inspection and maintenance.

This furnace is also equipped with a self-diagnosing elec­tronic 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 on
the problem encountered. This light can be viewed through
the observation window in the blower access door. Refer to
the Troubleshooting Chart for further explanation of the LED
codes and Abnormal Operation - Integrated Ignition Control
section in the Service Instructions for an explanation of the
possible problem.

The rated heating capacity of the furnace should be greater
than or equal to the total heat loss of the area to be heated.
The total heat loss should be calculated by an approved
method or in accordance with “ASHRAE Guide” or “Manual
J-Load Calculations” published by the Air Conditioning Con­tractors of America.

*Obtain from: American National Standards Institute 1430
Broadway New York, NY 10018

Location Considerations

• 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, or
combustible material other than wood flooring.

• When suspending the furnace from rafters or joists,
use 3/8" threaded rod and 2” x 2” x 3/8” angle as
shown in the Installation and Service Instructions. The
length of the rod will depend on the application and
clearance necessary.

• When installed in a residential garage, the furnace
must be positioned so the burners and ignition source
are located not less than 18 inches (457 mm) above
the floor and protected from physical damage by ve­hicles.

WARNING

O PREVENT POSSI BLE PERSONAL INJURY OR DEATH DUE TO ASPHYX I AT I ON,

T

THI S FURNACE MUST BE

CATEGORY III VE NT I NG.

1. Category I Venting is venting at a non-positive pressure.
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 installations must be vented in accordance
with National Fuel Gas Code NFPA 54/ANSI Z223.1 ­latest edition. In Canada, the furnaces must be vented in
accordance with the National Standard of Canada, CAN/
CSA B149.1 and CAN/CSA B149.2 - latest editions and
amendments.

NOTE: The vertical height of the Category I venting system
must be at least as great as the horizontal length of the
venting system.

2. Line voltage wiring can enter through the right or left side
of the furnace. Low voltage wiring can enter through the
right or left side of furnace.

3. Conversion kits for propane gas and high altitude natural
and propane gas operation are available. See High Alti­tude Derate chart for details.

ATEGORY I VENTED . DO NOT VENT USING

C

4

PRODUCT DESIGN

Accessibility Clearances (Minimum)

Unobstructed front clearance of 24" for servicing is rec­ommended.

MINIMUM CLEARANCE TO COMBUSTIBLE MATERIALS - INCHES

Sides TopRear Front*

103611

* 24" clearance for serviceability recommended.
** 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

SW B

Note: In all cases accessibility clearance shall take prece­dence over clearances from the enclosure where accessi­bility clearances are greater. All dimensions are given in
inches.

High Altitude Derate

When this furnace is installed at high altitude, the appropri­ate High Altitude orifice kit must be installed. This is re­quired due to the natural reduction in the density of both the
gas fuel and combustion air as altitude increases. The kit
will provide the proper design certified input rate within the
specified altitude range.

INPUT PER BURNER - 22,500 BTUH NATURAL GAS / 20,000 BTUH L.P.

ELEVATION ABOVE SEA-LEVEL (FEET)

US BURNER

ORIFICE

CANADA BURNER

ORIFICE

HA-02 HIGH ALTITUDE CONVERSION KIT REQUIRED

Tabled data is based upon the furnace input being reduced for altitudes above sea level. U.S. 4% per 1,000 feet.
Canada 10% derate for 2,000-4,000 feet.

2000 3000 4000 4500 5000 6000 7000 8000

44/55 44/55 45/56 45/56 46/57 47/58 47/58

44/55 47/57

High altitude kits are purchased according to the installa­tion altitude and usage of either natural or propane gas. Refer
to the chart above for a tabular listing of appropriate altitude
ranges and corresponding manufacturer’s high altitude Natu­ral Gas and Propane Gas kits. For a tabular listing of appro­priate altitude ranges and corresponding manufacturer's High
Altitude Pressure Switch kits, refer to either the Pressure

Switch Trip Points & Usage Chart in this manual or the Ac­cessory Charts in Service Instructions.

5

COMPONENT IDENTIFICATION

Pressure Switch

2

3

Flue Pipe Connection

4

Induced Draft Blower

Gas Line

5

Entrance

6

Gas Valve

7

Rollout Limit

8

Junction Box

Tubular Heat Exchanger

1

躀

Transformer

Wiring Harness

9

Grommet

Gas Manifold

Inshot Burner

Integrated Control Module

Upflow/Horizontal

1 Tubular Heat Exchanger
2 Pressure Switch
3 Flue Pipe Connection
4 Induced Draft Blower
5 Gas Line Entrance
6 Gas Valve
7 Rollout Limit
8 Junction Box

Gas Line Entrance
(Alternate)

Circulator Blower

Blower Door
Interlock Switch

Note: Primary Limit Not Shown

9 Wiring Harness Grommet
10 Gas Manifold
11 Inshot Burner
12 Transformer
13 Integrated Control Module
14 Blower Door Interlock Swtich
15 Circulator Blower
16 Gas Line Entrance (Alternate)

6

PRODUCT DIMENSIONS

Alt. Gas Inlet

AMH8

Alt. Gas Inlet

High Voltage Inlet

Low Voltage

MODELS A B

AMH80453AX**
AMH80703AX**

AMH80704BX**
AMH80903BX**
AMH80904BX**

14 12-1/2

17-1/2 16

Alt. High Voltag e

Alt. LowVoltage

AMH80905CX**
AMH81155CX**

AMH81405DX** 24-1/2 23

All dimensions are in inches.

21 19-1/2

7

PRODUCT DESIGN

PRESSURE SWITCH TRIP POINTS

MODEL

AMH80453AX**
AMH80703AX**
AMH80704BX**
AMH80903BX**
AMH80904BX**
AMH80905CX**
AMH81155CX**
AMH81405DX**

PRESSURE SWITCH TRIP POINTS

AND USAGE CHART

AND USAGE CHART

SQUARE NOSE ROUND NOSE

TRIP POINT
ID BLOWER

PRESSURE

SWITCH

-0.60 B1370142

-0.60 B1370142

-0.60 B1370142

-0.60 B1370142

-0.60 B1370142

-0.70 B1370158

-0.70 B1370158

-0.75 013070159

For installaions in Canada, the AMH8 furnace is certified only to 4,500 ft.

* Negative pressure readings are in inches of water column (*w.c.)

ID BLOWER

PRESSURE

SWITCH

PART #

MODEL

AMH80453AX**
AMH80703AX**
AMH80704BX**
AMH80903BX**
AMH80904BX**
AMH80905CX**
AMH81155CX**
AMH81405DX**

TRIP POINT
ID BLOWER
PRESSURE

SWITCH

-0.60 B1370142

-0.60 B1370142

-0.47 B1370176

-0.75 B1370179

-0.75 B1370179

-0.60 B1370142

-0.70 B1370158

-0.60 013070142

ID BLOWER

PRESSURE

SWITCH

PART #

PRIMARY LIMIT

Part Nu mber 0130F000 35 20162906 20162903 0130F00036

Open Setting (°F)

AMH804 53A*
AMH807 03A*
A MH80704B*
A MH80903B*
A MH80904B*
A MH80905C*
A MH81155C*
A MH81405D*

ROLLOUT LIMIT S WITCHES

Part Number 10123529

Op en Setting (°F)

AM H80453AX**
AM H80703AX**
AM H80704BX**
AM H80903BX**
AM H80904BX**
AM H80905CX**
AM H81155CX**
AM H81405DX**

220 170 160 180

1 --- --- ---

--- 1 --- ---

--- 1 --- ---

--- 1 --- ---

--- --- 1 ---

--- --- --- 1

--- --- --- 1

--- --- 1 ---

AUXIL IARY LIMIT SWITCHES

Part Number 0130F00038

300

2
2
2
2

2
2
2
2

Op en S etting (°F)

AMH80453A*
AMH80703A*
AMH80704B*
AMH80903B*
AMH80904B*
AMH80905C*
AMH81155C*
AMH81405D*

120

1
1
1
1

1
1
1
1

8

PRODUCT DESIGN

Coil Matches:

A large array of Amana® brand coils are available for use with the AMH8 furnaces, in either upflow or horizontal applica­tions. These coils are available in both cased and uncased models (with the option of a field installed TXV expansion
device). These 80% furnaces match up with the existing Amana® brand coils as shown in the chart below.

Coil Matches (Amana® brand units using R22 and R-410A):

C A P F 1824 A 6 A

PROD UCT

TYPE:

C: Indoor Coil

APPLICATION

A: Up fl ow/Downfl ow Coil
H: Horizontal A Coil
S: Ho riz ontal Sl ab Coil

EXPANSION
DEVICE:

F: Flowrater

CAB INET FI NIS H:

U: Unpai n ted
P: Painted
N: Unpaint ed Case

REVISION

A : Revision

REFRIGERANT
CHARGE:

6 : R- 4 10A or R- 22
2: R - 22
4: R - 410a

NOM IN AL WIDTH FOR GAS F URNACE

A: Fits 14 " F ur nace Cabine t
B: Fits 17 1/2" Furnace Cabinet
C: Fits 21" Furnace Cabinet
D: Fits 24 1/2" Furnace C abinet
N : Do es Not A pply (Hori z onta l S lab Coils)

NOMINAL CAPACITY RANGE
@ 1 3 SEER

18 24: 1 1/2 to 2 T ons
30 30: 2 1/2 Tons
36 36: 3 Ton s
3642: 3 to 3 1/2 Tons
4860: 4 & 5 Tons

• All CAPF coils in B, C, & D widths have insulated blank off plates for use with one size smaller furnaces.

• All CAPF coils have a CAUF equivalent.

• All CHPF coils in B, C & D heights have an insulated Z bracket for use with one size smaller furnace.

• All proper coil combinations are subject to being ARI rated with a matched outdoor unit.

9

PRODUCT DESIGN

Thermostats:

The following Amana® brand Thermostats are suggested for use with the AMH8 Furnace Models:

THERMOSTATS

Thermostat Mech./Digital Programmable Cool Heat

CHT-18-60 Mechanical Yes Yes Yes

CH70TG Digital No Yes Yes
CHSATG Mechanical Yes Yes Yes
H20TWR Mechanical Yes No Yes

Filters:

Filters are required with this furnace and must be provided by the installer. The filters used must comply with UL900 or
CAN/ULCS111 standards. Installing this furnace without filters will void the unit warranty.

Upflow Filters

Side Return(s) Bottom Return

Cabinet

Width

(in.)

Nominal

Filter Size

(in.)

Approx.

Flow Area

2

)

(in

Cabinet

Width

(in.)

Nominal

Filter Size

(in.)

All 16 x 25 x 1 400 14 12 x 25 x 1 300

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

Approx.

Flow Area

2

)

(in

Refer to Minimum Filter Area tables to determine filter area requirement. NOTE: Filters can also be installed elsewhere in
the duct system such as a central return.

MINIMUM FILTER SIZES

FURNACE INPUT FILTER SIZE TYPE

45M
70M

90M
115M
140M

45M

70M

90M
115M
140M

PERMANENT NOMINAL 600 F.M. FACE VELOCITY
DISPOSABLE NOMINAL 300 F.M. FACE VELOCITY

160 in
241 in
320 in
400 in
370 in
320 in
483 in
640 in
800 in
738 in

2

2

2

2

2

2

2

2

2

2

permanent
permanent
permanent
permanent
permanent
disposable
disposable
disposable
disposable
disposable

10

PRODUCT DESIGN

TwinComfort™ Configuration & Operation

TwinComfort™

This furnace is capable of the following heating modes:

• Single Stage (Factory Setting)

• Modified Two-Stage
> Fixed 5-Min. Low Stage
> Auto Time (1-12 Min.) Low Stage

To change from the factory single-stage operation,
adjust the dipswitches on the ignition control as follows:

OFF ON

MODE

5 MIN. FIXED

AUTO

Note: This furnace is designed to be used

with a single-stage room thermosat.

Start Start

Call for Heat Call for Heat

Safety Circuit Check Safety Circuit Check

Start Furnace

in Low Stage

Low-Heat Blower Low-Heat Blower

Delay Time (5 Min) Delay Time 1-12 Min)

Gas Valve Switch

to 2nd Stage

Blower Switch to

Hi Heat Operation

MODE DIP SWITCH

2ND STAGE DELAY
DIPSWITCH

Start Furnace

in Low Stage

Gas Valve Switch

to 2nd Stage

Blower Switch to

Hi Heat Operation

T-Stat Satisfied T-Stat Satisfied

11

FURNACE SPECIFICATIONS

(

)

(

)

MODEL

AMH80453AX**

Input, Natural Gas (BTUH) 45,000 70,000 70,000 90,000 90,000 90,000 115,000 140,000
Output, Natural Gas (BTUH)

Out pu t , LP ( BT UH) 32, 0 00 48,000 48,000 64,0 00 6 4,000 64,0 00 80,000 96,0 00
A.F.U. E. 80.0 % 8 0. 0% 80.0% 80.0% 80.0% 80.0% 80. 0% 80.0%
Rated External Static (" w.c.) 0.20 - 0.50 0.20 - 0.50 0.20 - 0.50 0.20 - 0.50 0.20 - 0.50 0.20 - 0.50 0.20 - 0.50 0.20 - 0.50
Temperature Rise (°F) 25 - 55 25 -55 20 - 50 35 - 65 35 - 65 35 - 65 35 - 65 40 - 70
Pres s u re Switc h Tr ip Poin t (" w.c.) -0.70 -0.70 -0 .75 -0.7 5 -0. 75 -0 .7 5 -0.90 -0 .80
Blower W heel (D" x W ") 10x6 10x6 10x8 10x8 10x8 10x10 10x10 11x10
Blower H orsepower 1/3 1/3 1 /2 1/3 1/ 2 1/2 1/2 3/4
Blower Speeds 4 4 4 4 4 4 4 4
Max CFM @ 0.5 E.S.P . 128 0 1100 1610 1439 1738 1854 1902 2084
Power Supply ( Volts/Hz/Ph) 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)
Maximum Overcurrent Device
Transformer (VA) 40 40 40 40 40 40 40 40
Pr i m ary Limit S ettin g (° F) 220 17 0 1 7 0 17 0 160 180 180 1 60
Aux i l ia ry Lim it Sett i ng (°F) 120 120 120 1 20 12 0 120 12 0 120
Rollout Li m it Setting (°F) 300 300 300 300 300 300 300 300
Fa n Dela y On Heat i ng 30 30 3 0 30 30 3 0 30 3 0
Off Heating * 150 150 150 150 150 150 150 150
Fa n Dela y On Cooli ng 5 5 5 5 5 5 5 5
Off Cooling 45 45 45 45 45 45 45 45
Fan Delay On - Fan Only 0 0 0 0 0 0 0 0

Ga s S u ppl y Pr essu re

Natural/Propane) (" w.c.

Manifold Pressure

Natural/Propane) (" w.c.

Orifice Size (Natural/Propane) 43 / 55 43 / 55 43 / 55 43 / 55 43 / 55 43 / 55 43 / 55 43 / 55
Number of Burners
Vent Connector D ia met er (inc he s) 4 4 4 4 4 4 4 4

Shipping W eight (lbs.) 115 125 136 146 146 154 154 153

1

3

36,000 56,000 56,000 72,000 72,000 72,000 92,000 112,000

2

8.1 8.1 12.5 8.1 12.5 12.5 12.5 14.7
15 15 15 15 15 15 15 15

7 / 11 7 / 11 7 / 11 7 / 11 7 / 11 7 / 11 7 / 11 7 / 11

3.5 / 10 3.5 / 10 3. 5 / 10 3. 5 / 10 3.5 / 1 0 3.5 / 10 3.5 / 10 3 .5 / 10

23344456

AMH80703AX**

AMH80704BX**

AMH80903BX**

AMH80904BX**

AMH80905CX**

AMH81155CX**

AMH81405DX**

*Off Heating - This fan delay timing is adjustable (90, 120, 150 or 180 seconds). 150 seconds as shipped.

1. These furnaces are manufactured for natural gas operation. Optional kits are available for conversion to propane operation.

2. Minimum Circuit Ampacity calculated as: (1.25 x Circulator Blower Amps) + I.D. Blower Amps. Wire sizes should be determined in accordance
with National Electrical Codes.Extensive wire runs will require larger wire sizes.

3 Maximum Overcurrent protections Device refers to maximum recommended fuse or circult breaker size. May use time delay fuses or HACR-

type circuit breakers of the same sizes as noted.

NOTES:

1. For elevations above 2000 feet the rating should be reduced by 4% for each 1000 feet above sea level. The furnace must not be derated,
orifice changes should only be made if necessary for altitude.

2. The total heat loss from the structure as expressed in TOTAL BTU/HR must be calculated by the manufacturers method or in accordance with
the "A.S.H.R.A.E. GUIDE" or "MANUAL J-LOAD CALCULATIONS" published by the AIR CONDITIONING CONTRACTORS 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.

12

BLOWER PERFORMANCE SPECIFICATIONS

(CFM & Temperature Rise vs. External Static Pressure)

Model

Motor

Heating Speed

()

As Shipped

*M(H/S)80453A*** MED 2.5 1160291160291132291121301082311042997925

(MEDIUM) MED-LO 2.0 961 35 955 35 948 35 932 36 913 37 882 821 803

*M(H/S)80703A*** MED 2.5 109847108148105149103950102151 983924868

(MEDIUM) MED-LO 2.0 919 56 913 57 892 58 847 ---- 829 ---- 818 792 728

*M(H/S)80704B*** MED 3.5 166831166331165631164532161632154914921391

(MEDIUM) MED-LO 3.0 141937142636142636143236141937137813281261

*M(H/S)80903B*** MED 2.5 11595811565811455811275911086010751033957

(MEDIUM) MED-LO 2.0 938 ---- 916 ---- 916 ---- 900 ---- 889 ---- 865 829 785

*M(H/S)80904B*** MED 3.5 173638170839165240161141154043147513941307

(MEDIUM) MED-LO 3.0 149345166840145946142947138948133912741204

*M(H/S)80905C*** MED 4.0 185236182037177738171939164141156714691382

(MEDIUM) MED-LO 3.5 161541159242155643151644147045140513461235

*M(H/S)81155C*** MED 4.0 185846184746179947174449167451157714931399

(MEDIUM) MED-LO 3.5 159653158754157154155255149357139713261217

*M(H/S)81405D*** MED 4.0 157566155867154567151369150069141913541271

(MEDIUM) MED-LO 3.5 1402 ---- 1380 ---- 1343 ---- 1319 ---- 1296 ---- 1245 1183 1106

Speed

HIGH 3.0 152122146623141424137324129826124311641075

LOW 1.5 781 43 785 42 781 43 773 43 761 44 745 716 668

HIGH 3.0 14223613523813074011974311574510921075983

LOW 1.5 758 ---- 741 ---- 741 ---- 733 ---- 699 ---- 677 649 626

HIGH 4.0 2134----210025204225197526188328178617001601

LOW 2.5 1134 46 1145 45 1166 44 1171 44 1160 45 1144 1111 1071

HIGH 3.0 160741157242154743149845144846139013021222

LOW 1.5 785 ---- 766 ---- 743 ---- 730 ---- 709 ---- 683 666 604

HIGH 4.0 2051----1983----189535181237172539162715301439

LOW 2.5 1200 56 1185 56 1180 56 1173 57 1158 58 1125 1125 1080

HIGH 5.0 2290 ---- 2229 ---- 2155 ---- 2047 ---- 1960 ---- 1837 1712 1584

LOW 3.0 1290 52 1285 52 1265 53 1235 54 1214 55 1174 1044 904

HIGH 5.0 232337222538212040204042197443180116881577

LOW 3.0 1291 ---- 1272 ---- 1261 ---- 1257 ---- 1205 ---- 1168 1118 1060

HIGH 5.0 246942238943230045222347213149202719021786

LOW 3.0 1200 ---- 1186 ---- 1161 ---- 1127 ---- 1082 ---- 1042 995 926

Tons AC

a t 0.5" 0.6 0.7 0 .8

ESP CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM

EXTERNAL STATIC PRESSURE (Inches Water Column)

0.1 0.2 0.3 0.4 0.5

NOTES:

1. CFM in chart is without filters(s). Filters do not ship with this furnace, but must be provided by the installer.

2. All furnaces ship as high speed cooling. Installer must adjust blower cooling speed as needed.

3. For most jobs, about 400 CFM per ton when cooling is desirable.

4. INSTALLATION IS TO BE ADJUSTED TO OBTAIN TEMPERATURE RISE WITHIN THE RANGE SPECIFIED ON THE RATING PLATE.

5. The chart is for information only. For satisfactory operation, external static pressure must not exceed value shown on rating plate. The shaded area indicates
ranges in excess of maximum external static pressure allowed when heating. The data for 0.6" w.c. to 0.8" w.c. is shown for air conditioning purposes only.

6 The dashed (---) areas indicate a temperature rise not recommended for this model.

7. The above chart is for U.S. furnaces installed at 0-2000 feet. At higher altitudes, a properly derated unit will have approximately the same temperature rise at a
particular CFM, while the ESP at that CFM will be lower.

13

BLOWER PERFORMANCE SPECIFICATIONS

MPER

RE R

÷ CFM

130 140 150

900

FORMULAS

BTU OUTPUT = CFM x 1.08 x RISE

1.08

BTU OUTPUT

RISE =

100

2400 CFM

2200

2000

1800

1600

1400

1200

1100

1000

OUTPUT BTU/HR x 1000

14

800

BTU OUTPUT vs TEMPER ATURE RISE CHART

600 CFM

700

30 40 50 60 70 80 90 110 120

100

90

80

70

60

ISE

50

ATU

TE

40

30

20

10

WIRING DIAGRAMS

A

)

)

)

)

)

)

)

)

(3)

)

A

WARNING:DISCONNECT POWER BEFORE
SERVICING.WIRING TO UNIT MUST BE
PROP ERLY POLARIZ ED AND GR OU N D ED .

24 VAC

HUMIDIFIER

CGRWY

78

654
321

RD

RD

PU

YL

YL

PU

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.

0

1

2
3
4
5
6

7

8
C

COLOR CODES:

YL YELLOW
OR ORANGE
PU PURPLE
GR GREEN
BK BLACK

WH

BK

WH

WH

WH

HOT
SURFACE
IGNITER

PU

STEADY ON = NORMAL OPERATION

OFF = CONTRO L F AILURE
1 FLASH =
2 FLASHES = PRESSURE SWITCH STUCK CLOSED
3 FLASHES = PRESSURE SWITCH STUCK OPEN
4 FLASHES = OPEN HIGH LIMIT
5 FLASHES = FLAME SENSE WITHOUT GAS VAL VE
6 FLASH ES =

7 FLASHES = LOW FLAME SIGNAL

8 FLASHES = CHECK IGNITER OR IMPROPE R GROUND
RAPID FLASHES = REVERSED 115 VAC POLARITY/VERIFY GND

2
1

BK

WH

GR

SWITCH LOCATED IN BLOWER
COMP ARTMENT ON SOME MODELS

RD

RD

PM1HIC

PU

(SINGLE CONTROL ON SOM E M ODEL S)

SYSTEM LOCKOUT (RETRIES/RECYCLES EXCEEDED)

OPEN ROLLOUT OR OPEN FUSE

PK PINK
BR BROWN
WH WHITE
BL BLUE
GY GRAY
RD RED

HUMIDIFIER

XFMR (6)
GND (8

MVC (9
MVH (12)

O

(

F

1

I

N
R

E

S
E

XFMR

XFMR-H

LINE-H

DOOR
SWITCH

1

O

2

4

I

E

)

V

5
E

L

D
T

C
M

T

C

T

R

M

R

TO
MICRO

FP

1

5
V

)

V
L

D

I

I

N

O

I

E

O

EAC-H

V

E

O

A

N

C

S

IGN

IND

A

R

LINE-N
GND
LINE H

N

L

E
T

C

C

N
A

MVL (2

PS (10

PSO (4

HLI (7
HLO (1

RO2 (11

RO1 (5

1

/

R

U

,

T
T

I

HOT SURFACE

ELECTRONIC

IR CLEANER

Ø

E

N

R

E

P

D

U

P

N

L GND

/

T

R
T

S

C

24V THERMOSTA T CONNE CTIONS

5 MIN
2 STG

MODE

WH

BL

CICULATOR

BR

BLOWER

BL

WH

15 PIN PLUG

ON SOME MODELS

BLOWER COMPARTMENT

BURNER COM PARTMENT

NO

PRESSURE

YL

SWITCH

BK

BK

W

H

INDUCED DRAFT

BLOWER

FLAME
SENSOR

UXILIARY
LIMITS

BR

OR(MED LOW)

RD (LOW)

WH (N)

CAP

BL (MED)

BK (HI)

24 VAC

HUMIDIFIER

C

WH

INTEGRATED

CONTRO L MODUL E

BL

RD

BK

PRIMARY LIMIT

YL

32

2 STAGE

GAS VAL VE

ROLLOUT LIMITS

BR

OR

24V

115V
XFMR

DOOR SWITCH

YL

BR

PU

PARK

BK

RD

OR

BL

WH

L
L

H

INTERNAL TO
INTEGRATED CONTROL

NOTES:

1. SET HEAT ANTICIPATOR ON ROOM THERMOSTAT A T 0.7 AMPS.

2. MANUFACTURER'S SPECIFIED REPLACEMENT PARTS MUST BE USED WHEN SERVICING.

3. IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE FURNACE MUST BE
REPLACED, IT MUST BE REPLACED WITH WIRING MATERIAL HAVING A TEMPERATURE
RATING OF AT LEAST 105

4. BLOWER SPEEDS SHOULD BE ADJUSTED BY INSTALLER TO MATCH THE INSTALLA TION
REQUIREMENTS SO AS TO PROVIDE THE CORRECT HEATING TEMPERATURE RISE AND THE
CORRECT COOLING CFM. (SEE SPEC SHEET FOR AIR FLOW CHART)

5. UNIT MUST BE PERMANENTLY GROUNDED AND CONFORM TO N.E.C. AND LOCAL CODES.

O

T

6

.

O

F

H

T

A

L

C

L

E

R

O

A

E

H

T

R

M

R

°C. USE COPPER CONDUCTORS ONLY.

L

E

A

S

T

5

F

A

2

N

S

E

D

C

N

O

T

S

M

L

U

O

T

,

S

I

S

L

H

W

E

I

N

E

R

S

T

G

Y

W

R

INTEGRATED CONTROL MODULE

BR

BR

YL

JUNCTION

BOX

TO 115 VAC/ 1/60HZ

POWER SUPPLY WITH

OVERCURRENT PROTECTION
DEVICE

L

G

W

T

A

V

O

O

W

O

V

O

L

T

G

A

I

E

L

A

T

G

O

V

I

H

E

L

A

T

G

V

O

N

O

P

C

L

G

U

T

T

N

E

L

E

O

C

T

O

(

N

B

Y

D

A

N

T

E

E

1

(

F

J

U

E

T

N

A
H

AMH8_CA/CB

INTEGRATED
CONTROL MODULE

GND

C2

GAS
VALVE

HI

M1

ID BLOWER
PRESSURE
SWITCH

NO

C

24 VAC

40 VA
TRANSFORMER

115 VAC

FLAME SENSOR

IGNITER

ID
BLWR

CIRCULATOR

BLWR

JUNCTION BOX

Z

H

P

6

0

T

E

O

R

P

E

Q

F

W

S

W

I

S

T

P

S

S

W

S

E

.

)

XFMR-N

IGN-N

IND-N

CIR-N

EAC-N

LINE-N

DISCONNECT

N

E

R

P

W

P

O

S

U

T

N

O

C

I

I

E

V

D

I

U

M

P

T

E

N

G

N

F

G

I

E

L

D

P

L

S

E

I

C

I

E

L

D

I

T

H

(

C

T

E

P

.

M

I

T

N

I

G

S

S

.

E

P

R

(

H

C

E

R

R

U

C

E

R

V

O

.

T

O

R

C

E

V

I

D

INTEGRATE D CONTROL MODULE

L

Y

W

T

I

H

E

C

D

N

D

)
E

R

)

T

N

E

H

I

C

T

Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.

15

WIRING DIAGRAMS

AMH8_CC

WARNING:DISCONNECT POWER BEFORE

SERVICING.WIRING TO UNIT MUST BE

PROPERLY POLARIZED AND GROUNDED.

24 VAC

HUMIDIFIER

C

CGRWY

1110

12

978
654
321

CONTROL MODULE

RD

RD

PU

YL

YL

PU

WH

BK

WH

WH

WH

RD

LINE NEUTRAL

2
1

BK

WH

GR

SWITCH LOCATED IN BLOWER
COMPARTMENT ON SOME MODELS

RD

RD

PM1HIC

HOT
SURFACE
IGNITER

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 DEAT H.

0

STEADY ON = NORMAL OPERATION

1
2
3
4
5
6
7
8
C

COLOR CODES:

YL YELLOW
OR ORANGE
PU PURPLE
GR GREEN
BK BLACK

PU

OFF = CONTROL FAI LURE
1 FLASH =
2 FLASHES = PRESSURE SWITCH STUCK CLOSED
3 FLASHES = PRESSURE SWITCH STUCK OPEN
4 FLASHES = OPEN HIGH LIMIT
5 FLASHES = FLAME SENSE WITHOUT GAS VALVE
6 FLASHES =

OPEN ROLLOUT OR OPEN FUSE
7 FLASHES = LOW FLAME SIGNAL
8 FLASHES = CHECK IGNITER OR IMPROPER GROUND

RAPID FLASHES = REVE RSED 115 VAC POLARITY/VERIFY GND

2 STAGE
GAS VALVE
(HONEY WELL)

PU

ROLLOUT LIMITS

(SINGLE CONTROL ON SOME MODELS)

SYSTEM LOCKOUT (RETRIES/RECYCLES EXCEEDED)

PK PINK
BR BROWN
WH WHITE
BL BLUE
GY GRAY
RD RED

0140F00 662 REV. A

5 MIN

AUTO

2 STG

1 STG

100 SE C

150 SE C

FUSE

SEE NOTE 6

INTEGRATED

FS

BL

OR

EAC-HLINE-HXFMR-H

24V

115V
XFMR

BK

DOOR SWITCH

PRIMARY LIMIT

YL

YL

BR

23

PU

NOTES:

1. SET HEAT ANTICIPATOR ON ROOM THERMOSTAT AT 0.7 AMPS.

2. M ANUFACTURER'S SPECIFIED REPLACEMENT PA RTS MUST BE USED WHEN SERVICING.

3. IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE FURNACE MUST BE
REPLACED, IT MUST BE REPLACED WITH WIRING MATERIAL HAVING A TEMPERATURE
RATING OF AT LEAST 105

4. BLOWER SPEEDS SHOULD BE ADJUSTED BY INSTALLER TO MATCH THE INSTALLATION
REQUIREMENTS SO AS TO PROVIDE THE CORRECT HEATING TEMPERATURE RISE AND THE
CORRECT COOLING CFM. (SEE SPEC SHEET FOR AIR FLOW CHART)

5. UNI T MUST BE PERMANENTLY GROUNDED AND CONFORM TO N.E.C. AND LOCAL CODES.

6. TO RECALL THE LAST 5 FAULTS, MOST RECENT TO LEAST RECENT, DEPRESS SWITCH
FOR MORE THAN 2 SECONDS WHILE IN STANDBY(NO THERMOSTAT INPUTS).

Y

L

D

G

T

S

D

N

2

MODE

H

T

O

F

F

D

L

Y

WH

BL

DIAG NOST IC

LED

BR

BL

WH

15 PIN PLUG

ON SOME MODELS

BLOWER COMPARTMENT

BURNER COMPARTMENT

OR

YL

BK

W

H

INDUCED DRAFT

FLAME
SENSOR

AUXILIARY

LIMITS

BR

WH (N)

CICULATOR

BLOWER

NO

PRESSURE
SWITCH

BK

BLOWER

OR(MED LOW)

RD (LOW)

CAP

HUMIDIFIER

WH

BR

COOL-HHI HEAT-H

LO HEAT-H

PAR K

BK

RD

BL

WH

°C. USE COPPER CONDUCTORS ONLY.

24V THERMOSTAT CONNECTIONS

G

Y

W

R

XFMR-H

INTEGRATED CONTROL MODULE

BL (MED)

BK (HI)

BR

BR

LINE-H

24 VA C

C

WARNING:

DISCONNECT POWER

YL

BEFORE SERVICING.
WIRING TO UNIT
MUST BE
PROPERLY
POLARIZED
AND GROUNDED.

JUNCTION

BOX

TO 115 VA C/ 1/60HZ

POWER SUPPLY WITH

OVERCURRENT PR OTECTION
DEVICE

LOW VOLTAGE (24V)
LOW VOLTAGE FIELD
HI VOLTAGE (115V)

HI VOLTAGE FIELD

JUNCTION
TERMINAL

INTERNAL TO
INTEGRATED C ONTROL

PLUG CONNECTION

TO
MICRO

XFMR (3)

DOOR
SWITCH

OVERCURRENT PROTE CTION DEVICE

HUMIDIFIER

XFMR (6)
GND (8)

MVC (9)
MVH (12)

MVL (2)

AUXILIARY
LIMIT CONTROLS

PS (10)
PSO (4)
HLI (7)

HLO (1)

RO2 (11)

RO1 (5)

MANUAL RESET ROLLOUT
LIMIT CONTROL(S)

(SINGLE CONTROL ON SOME MODELS)

FLAME SENSOR

FP

EAC-H

HOT SURFACE

IGNITER

IGN

ID

H

E

A

COOL-H

I

H

T

A

E

H

ELECTRONIC
AIR CLE ANER

BLWR

L

O

T

-

H

CIRCULATOR

H

-

JUNCTION BOX

IND

LGND

LINE-N
GND
LINE H

24 VA C

115 VAC

BLWR

SWITCH (TEMP.)

SWITCH (PRESS.)

INTEGRATED
CONTROL MODULE

GND

C2

GAS
VALVE

HI

M1

C

40 VA
TRANSFORMER

XFMR-N

IGN-N

IND-N

CIR-N

EAC-N

LINE-N

DISCONNECT

N

EQUIPMENT GND

FIELD GND

FIELD SPLICE

IGNITER

OVERCURRENT
PROT. DEVICE

ID BLOWER
PRESSURE
SWITCH

NO

AUTO RESET
PRIMARY
LIMIT
CONTROL

INTEGRATED CONTROL MODULE

16

Wiring is subject to change. Always refer to the wiring diagram on the unit for the most up-to-date wiring.

SCHEMATICS

CIRCUL

BLOWER

ATOR

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.

ELECTRONIC

AIR CLEANER

NDUCER

I

COOL

K2

K3

FLAME

SENSOR
PROBE

HI

HEAT

K2

K1

.0005

3M

FP

IGN

HEAT

K3

IGN

ITOR

LO

K4

GND

PARK

COM

HI
2-STAGE

GAS V

CIR
NEU

FACTORY
JUMPER

MV MLV

PM

ALVE

EAC

K5

PS

C

EA
NEU

K6

FACTORY
JUMPER

HLO

HIGH
LIMIT

PRESSURE
SWITCH

IND

HLI

AUX
LIMIT

K7

PSO

R
RO2

RO1

TH

XFM
HOT

XFMR

NEU
TR
C

Y
G

W

ROLLOUT
SWITCH

R

24 VAC

COMPRESSOR

TACTOR

CON
COIL

Y

G
W

THERMOSTAT

R

TYPICAL SCHEMATIC

AMH8 ____** MODEL FURNACES

WR 50M56-289 INTEGRATED IGNITION CONTROL

This schematic is for reference only. Not all wiring is as shown above. Always refer to the appropriate wiring diagram for the unit being serviced.

17