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Safety Considerations

IMPORTANT NOTE:

This unit is designed to meet the NOX

requirement of 14Ng/J maximum as required by the South

Coast Air Quality Management District and the San Joaquin

Valley Air Pollution Control District, both in the State of Cal-

ifornia,and is intended for installation in those districts only.

This unit has a Control System that compensates for certain

installation and environmental conditions. This unit must:

•

Be properly installed, operated, and maintained per

the instructions.

•

Be serviced only by properly trained service

technicians.

This unit is not approved for use with gasses other than

Natural Gas.
Units that are not installed, maintained, or operated properly

may result in “noisy” operation during the heating cycle. If

this unit is making unusual or objectionable noises during

the heating cycle, turn the heat off at the thermostat and

contact a qualified service organization right away.

Vent Pipe Connection ...........................................

Combustion Air Pipe Connection ........................

Alternate Vent & Intake Pipe Connections .......13

Pipe Termination ....................................................

Side Wall Vent Kit .................................................

Condensate Drain Lines & Drain Trap ..................

General Drain Information .................................

Field Supplied Drain .............................................

Upflow Model Installed Vertically ...................

Drain Exiting Right Side ......................................

Drain Exiting Left Side .........................................

Upflow Model Installed Horizontally w/ Right Side

Down ................................................................................

Upflow Model Installed Horizontally w/ Left Side

Down ..............................................................................

Upflow Model Installed Horizontally w/ Left

Side Down - Alternate ..........................................

Electrical Connections ..........................................

Wiring Harness .....................................................

115 Volt Line Connections ...................................

Junction Box Relocation .....................................

24 Volt Thermostat Wiring ..................................

Single-Stage Heating Thermostat Application .

Fossil Fuel Applications ......................................

Gas Supply and Piping..............................................

Gas Piping Connections .......................................

Circulating Air & Filters .........................................23

Duct work - Air Flow ...........................................23

Checking Duct Static ...........................................23

Bottom Return Air Opening [Upflow Models] ..

Filters - Read This Section Before Installing

The Return Air Duct work ...............................

Upright Installations ...........................................

Horizontal Installations .....................................

Drain Trap Priming ...............................................

Furnace Operation ...............................................

Gas Supply Pressure Measurement...................

Gas Manifold Pressure Measurement and Adjust

ment .........................................................................

Gas Input Rate Measurement (Natural Gas Only)

Temperature Rise ..................................................

Circulator Blower Speeds .................................

Blower Heat Off Delay Timings ..........................

Normal Sequence of Operation .............................

Power Up ................................................................

Heating Mode .........................................................

Cooling Mode ........................................................

Fan Only Mode .......................................................

Operational Checks .................................................

Safety Circuit Description .....................................

Integrated Control Module ...............................

Primary Limit ..........................................................

Auxiliary Limit ........................................................

Burner Temperature Switch ...............................

Pressure Switches ...............................................

Flame Sensor ........................................................

Troubleshooting ......................................................

Electrostatic Discharge (ESD) Precautions ...

Resetting From Lockout .....................................30

Maintenance ..............................................................30

Annual Inspection .................................................30

Filters .....................................................................30

Burner ....................................................................31

Induced Draft and Circulator Blowers ...........31

Condensate Trap and Drain System (Qualified

Servicer Only) .......................................................31

Flame Sensor (Qualified Servicer Only) ...........31

Flue Passages (Qualified Servicer Only) ..........31

Before Leaving an Installation ..............................31

Repair and Replacement Parts ..............................31

Diagnostic Chart .....................................................32

Airflow *MES96*** ..................................................34

Wiring Diagram *MES96*** ......................................35

Adhere to the following warnings and cautions when install

ing, adjusting, altering, servicing, or operating the furnace.

To ensure proper installation and operation, thoroughly read

this manual for specifics pertaining to the installation and

application of this product.
This furnace is manufactured for use with natural gas only.
Install this furnace only in a location and position as specified

LOCATION REQUIREMENTS & CONSIDERATIONS

section and INSTALLATION POSITIONS section

of this

manual.
Provide adequate combustion and ventilation air to the fur

nace as specified in

COMBUSTION & VENTILATION AIR

REQUIREMENTS section of this manual.

Combustion products must be discharged to the outdoors.

Connect this furnace to an approved vent system only, as

specified in

VENT/FLUE PIPE & COMBUSTION AIR PIPE

section of this manual.

Содержание MES96 U Series

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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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