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Installation Instructions for

*MES96*U Ultra Low NOx Gas Furnace

(Type FSP CATEGORY IV Direct

(Type FSP CATEGORY IV Direct

or Non Direct Vent Air Furnace)

(Type FSP CATÉGORIE IV Direct

ou four á air soufflé non direct)

Installer: 

Affix all manuals

adjacent to the unit.

A

s a professional installer you have an obligation to know 

the product better than the customer. This includes all safety 

precautions and related items.

Prior to actual installation, thoroughly familiarize yourself 

with  this  Instruction  Manual.  Pay  special  attention  to  all 

safety  warnings.  Often  during  installation  or  repair  it  is 

possible  to  place  yourself  in  a  position  which  is  more 

hazardous than when the unit is in operation.

Remember,  it  is  your  responsibility  to  install  the  product 

safely and to know it well enough to be able to instruct a 

customer in its safe use.
Safety is a matter of common sense...a matter of thinking 

before acting. Most dealers have a list of specific good safety 

practices...follow them.

The  precautions  listed  in  this  Installation  Manual  are 

intended as supplemental to existing practices.   However, 

if there is a direct conflict between existing practices and 

the content of this manual, the precautions listed here take 

precedence.

RECOGNIZE THIS SYMBOL

AS A SAFETY PRECAUTION.

O

NLY

 

PERSONNEL

 

THAT

 

HAVE

 

BEEN

 

TRAINED

 

TO

 

INSTALL

ADJUST

SERVICE

 

OR

 

REPAIR

 (

HEREINAFTER

, “

SERVICE

”) 

THE

 

EQUIPMENT

 

SPECIFIED

 

IN

 

THIS

 

MANUAL

 

SHOULD

 

SERVICE

 

THE

 

EQUIPMENT

. T

HE

 

MANUFACTURER

 

WILL

 

NOT

 

BE

 

RESPONSIBLE

 

FOR

 

ANY

 

INJURY

 

OR

 

PROPERTY

 

DAMAGE

 

ARISING

 

FROM

 

IMPROPER

 

SERVICE

 

OR

 

SERVICE

 

PROCEDURES

.  I

F

 

YOU

 

SERVICE

 

THIS

 

UNIT

YOU

 

ASSUME

 

RESPONSIBILITY

 

FOR

 

ANY

 

INJURY

 

OR

 

PROPERTY

 

DAMAGE

 

WHICH

 

MAY

 

RESULT

.  I

N

 

ADDITION

IN

 

JURISDICTIONS

 

THAT

 

REQUIRE

 

ONE

 

OR

 

MORE

 

LICENSES

 

TO

 

SERVICE

 

THE

 

EQUIPMENT

 

SPECIFIED

 

IN

 

THIS

 

MANUAL

ONLY

 

LICENSED

 

PERSONNEL

 

SHOULD

 

SERVICE

 

THE

 

EQUIPMENT

.  I

MPROPER

 

INSTALLATION

ADJUSTMENT

SERVICING

 

OR

 

REPAIR

 

OF

 

THE

 

EQUIPMENT

 

SPECIFIED

 

IN

 

THIS

 

MANUAL

OR

 

ATTEMPTING

 

TO

 

INSTALL

ADJUST

SERVICE

 

OR

 

REPAIR

 

THE

 

EQUIPMENT

 

SPECIFIED

 

IN

 

THIS

 

MANUAL

 

WITHOUT

 

PROPER

 

TRAINING

 

MAY

 

RESULT

 

IN

 

PRODUCT

 

DAMAGE

PROPERTY

 

DAMAGE

PERSONAL

 

INJURY

 

OR

 

DEATH

.

Cancer and Reproductive Harm

 -

www.P65Warnings.ca.gov

PROP 65 WARNING

FOR CALIFORNIA CONSUMERS

0140M00517-A

TABLE OF CONTENTS

Safety  Considerations .............................................

2

Shipping Inspection .................................................

4

Electrostatic Discharge (ESD) Precautions .....

4

To The Installer ......................................................

5

Product Application ..................................................

5

Location Requirements & Considerations..............

5

Clearances and Accessibility ...............................

6

Existing Furnace Removal .....................................

7

Thermostat Location ..............................................

7

Combustion & Ventilation Air Requirements .........

8

Installation Positions ...............................................

8

Horizontal Applications & Considerations ............

8

Furnace Suspension ...............................................

8

Front Cover Pressure Switch Tube Location ...

9

Drain Trap and Lines ............................................

10

Leveling ..................................................................

10

Alternate Electrical and Gas Line Connections .

10

Drain Pan ................................................................

10

Freeze Protection ................................................

10

Vent Pipe & Combustion Air Pipe  ...........................

10

Materials ................................................................

10

Installation ............................................................

11

Pipe Sizing ..............................................................

12

These  furnaces  comply  with  requirements 

embodied in the American National Standard/

National Standard of Canada ANSI Z21.47·C

-

SA-2.3 Gas Fired Central Furnaces.

19001 Kermier Rd. 

Waller, TX 77484

www.goodmanmfg.com • www.amana-hac.com

©

 2014-2020 Goodman Manufacturing Company, L.P.

 

is a registered trademark of Maytag Corporation or its related companies

and is used under license.  All rights reserved.

IOG-2013D

05/2020

Summary of Contents for MES96 U Series

Page 1: ...R SERVICE PROCEDURES IF YOU SERVICE THIS UNIT YOU ASSUME RESPONSIBILITY FOR ANY INJURY OR PROPERTY DAMAGE WHICH MAY RESULT IN ADDITION IN JURISDICTIONS THAT REQUIRE ONE OR MORE LICENSES TO SERVICE THE...

Page 2: ...Air Opening Upflow Models 24 Filters Read This Section Before Installing The Return Air Duct work 24 Upright Installations 25 Horizontal Installations 25 Drain Trap Priming 25 Furnace Operation 25 Ga...

Page 3: ...me trap at time of installation may have a negative effect on combustion quality and pressure switch action WARNING FIRE OR EXPLOSION HAZARD Failue to follow safety warnings exactly could re sult in s...

Page 4: ...d other discounts or reductions Copy of the inspection report issued by carrier s representative at the time damage is reported to carrier Electrostatic Discharge ESD Precautions NOTE Discharge your b...

Page 5: ...n instructions provided and per local and national codes It must be installed indoors in a building constructed on site It must be part of a ducted system and not used in a free air delivery applicati...

Page 6: ...eater POSSIBLE PROPERTY DAMAGE PERSONAL INJURY OR DEATH DUE TO FIRE EXPLOSION SMOKE SOOT CONDENSATION ELECTRICAL SHOCK OR CARBON MONOXIDE MAY RESULT FROM IMPROPER INSTALLATION REPAIR OPERATION OR MAIN...

Page 7: ...Seal any unused openings in the venting system 2 Inspect the venting system for proper size and horizon tal pitch as required by the National Fuel Gas Code ANSI Z223 1 instructions Determine that ther...

Page 8: ...ization can cause back drafting or improper combustion of gas fired appliances thereby exposing building occupantstogascombustionproductsthatcouldincludecarbon monoxide If this furnace is to be instal...

Page 9: ...en marche alors que tous les autres appareils raccord s au syst me de ventila tion ne sont pas en marche 1 Sceller toutes les ouvertures inutilis es du syst me de ventilation 2 Inspecter le syst me d...

Page 10: ...onally the appropriate downward piping slope must be maintained from the drain trap to the drain location Refer to Condensate Drain Trap and Lines for further details If the drain trap and drain line...

Page 11: ...A masonry chimney may be used as a chase or passage way for approved venting materials providing the masonry chimney is not also being used to vent products of combustion Never common vent this appli...

Page 12: ...Lengths shown in table 3 apply to single pipe two pipe installations In a two pipe installation do not add intake and vent pipe lengths together Both pipes would normally be equal in length if differ...

Page 13: ...ng the horizontal alternate vent configuration you must use the RF000142 vent drain kit See Figures 10 11 follow steps below NOTE In the horizontal left installation position a means of condensate col...

Page 14: ...rect vent application must terminate at least 12 from any opening through which flue gases may enter a building door window or gravity air inlet The vent termination of vent pipe run vertically throug...

Page 15: ...HEIGHT DIFFERENCE 12 MIN TO ROOF OR HIGHEST ANTICIPATED SNOW LEVEL Figure 14 Vertical Termination STRAIGHT ELBOWS Figure 15 VENT FLUE TEE or 45 ELBOW TURNED DOWN or 90 ELBOW TURNED DOWN OPTIONAL 12 M...

Page 16: ...swiththeexhaustventandairintaketerminations of a single unit If more than one direct vent furnace is to be installed horizontally through a common side wall maintain the clearances as in the following...

Page 17: ...Drain Trap A condensing gas furnace achieves its high level of efficiency by extractingheatfromtheproductsofcombustiontothepointwhere condensation takes place The condensate must be collected in the f...

Page 18: ...barbed end goes in the cabinet through the hole in the left side of the cabinet and secure with two field supplied 8 self tapping screws see Figure 24 2 Locate the long drain hose 3 and cut at B line...

Page 19: ...rip leg port must be sealed to prevent flue gases from escaping Insert the rubber plug removed in step 6 into the unused elbow drain port Inserting a blunt tool such as a 3 16 Allen wrench into the ce...

Page 20: ...ctrical circuit containing prop erly sized wire and fuse or circuit breaker The fuse or circuit breaker must be sized in accordance with the maximum overcurrent protection specified on the unit rating...

Page 21: ...ERSONAL INJURY OR DEATH MAY OCCUR IF THE CORRECT CONVERSION KITS ARE NOT INSTALLED THE APPROPRIATE KITS MUST BE APPLIED TO ENSURE SAFE AND PROPER FURNACE OPERATION ALL CONVERSIONS MUST BE PERFORMED BY...

Page 22: ...rning The orientation of the gas valve on the manifold must be maintained as shipped from the factory Maximum torque for the gas valve connection is 375 in lbs excessive over tightening may damage the...

Page 23: ...ressures in excess of psig 3 48 kPa Isolate this unit from the gas supply piping system by closing its external manual gas shutoff valve before pressure testing supply piping system with test pressure...

Page 24: ...e cor ners of the opening cut the sheet metal along the scribe lines to free the duct flanges Using the scribe line along the duct flange as a guide unfold the duct flanges around the perimeter of the...

Page 25: ...MUST BE AS SPECIFIED ON THE UNIT RATING PLATE WITH ALL OTHER HOUSEHOLD GAS FIRED APPLIANCES OPERATING Furnace Startup 1 Closethemanualgasshutoffvalveexternaltothefurnace 2 Turn off the electrical powe...

Page 26: ...ure regulator gas piping size etc and or consult with local gas utility 5 Turn OFF gas to furnace at the manual shutoff valve and disconnect manometer Reinstall plug and tighten as needed before turni...

Page 27: ...essure cannot vary by more than 0 2 w c for Natural gas from the specified setting Consult your local gas supplier if additional input rate adjustment is required 4 Turn ON gas to and relight all othe...

Page 28: ...ule performs internal checks LED will flash once at power up then remain on Integrated control module monitors safety circuits continuously Furnace awaits call from thermostat Heating Mode The normal...

Page 29: ...osed electrically auto reset sensor This switch guards against the burner flames not being properly drawn into the heat exchanger Pressure Switches The pressure switches are normally open closed durin...

Page 30: ...ol will return to lockout Refer to the Troubleshooting Chart for aid in determining the cause Field Test Mode Function When the SW1 button is pressed and held until the LED is blinking in AMBER more t...

Page 31: ...ly Annually inspect the drain tubes drain trap and field sup plied drain line for proper condensate drainage Check drain system for hose connection tightness blockage and leaks Clean or repair as nece...

Page 32: ...Open RED When an open limit is detected the control energizes the blower at cooling speed and the inducer at the RUN setting no CFH required Once the limit closes and the CFH is present the furnace r...

Page 33: ...Press and hold the SW1 button for more than 5 seconds results in the display of this mode Releasing the Button during this indication will cause the Error History to be cleared The button must be rel...

Page 34: ...CFM Rise CFM CFM CFM Red High Cool 3 1350 NA 1310 NA 1273 NA 1234 NA 1198 NA 1156 1117 1078 Blue Med Hi Heat 2 5 1247 29 1212 30 1167 31 1129 32 1087 33 1043 997 952 Brown Med Low 2 1151 31 1107 32 1...

Page 35: ...ore servicing or installing this unit Multiple power sources may be present Failure to do so may cause property damage personal injury or death Wiring is subject to change Always refer to the wiring d...

Page 36: ...a relatively short process and entitles you to additional warranty protection except that failure by California and Quebec residents to register their product does not diminsh their warranty rights Fo...

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