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11

PVC

ASTM STANDARD

SCHEDULE 40 PIPE

D1785

SCHEDULE 40 CELLULAR CORE PIPE

F891

SDR 21 OR 26 PIPE

D2241

FITTINGS

D2466

ABS

SCHEDULE 40 PIPE

D1527

SCHEDULE 40 CELLULAR CORE PIPE

F628

FITTINGS

D2468

CPVC

SCHEDULE 40 PIPE

F441

SDR 21 OR 26 PIPE

F442

FITTINGS

F438

POLYPROPYLENE

INNOFLUE® (CENTROTHERM)
POLYPRO® (DURAVENT)

PRIMER & SOLVENT CEMENT

PVC PRIMER

F656

CPVC PRIMER

F656

PVC SOLVENT CEMENT

D2564

CPVC SOLVENT CEMENT

F493

ABS SOLVENT CEMENT

D2235

ABS / PVC / CPVC ALL PURPOSE 

CEMENT (FOR PIPE & FITTINGS OF 

THE SAME MATERIAL)

D2564, D2235, 

F493

TRANSITION CEMENT FOR ABS TO 

PVC or CPVC

D3188

INSTALLATIONS IN CANADA

PVC & CPVC PIPE & FITTINGS
PVC & CPVC SOLVENT CEMENT
TRANSITION CEMENT

INNOFLUE® (CENTROTHERM)
POLYPRO® (DURAVENT)

VENTING MATERIAL REQUIREMENTS

ULC S636

TABLE 2

Installation

This furnace is manufactured with 2” CPVC vent & intake 

couplings. Use transition cement to connect PVC or ABS 

pipe to these fittings. For furnaces requiring installation of 3” 

pipe, the transition from 2” to 3” should be made as close to 

the furnace as possible, and only when the piping is sloped 

enough to prevent condensation from collecting.
This furnace must not be connected to Type B, BW, or L 

vent or vent connector, and must not be vented into masonry 

chimney. 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 appliance with another 

appliance. Never use a vent which is used by a solid fuel 

appliance. 
Piping  may  run  vertically  or  horizontally  and  must  be  ad

-

equately  supported  to  prevent  strain  on  joints,  sagging, 

separation,  and  detachment  from  the  furnace.  Horizontal 

runs of piping must be supported every three to five feet. 

Condensation within the furnace secondary heat exchang

-

er and in the vent pipe is a normal occurrence. Vent pipe 

must be installed to maintain a minimum 1/4 inch per foot 

downward slope toward the furnace to return condensate to 

the furnace’s drain system. Condensation may also occur 

in the intake pipe. This commonly takes place during the 

summer months when humid air enters an intake pipe that 

runs through a cool basement or other conditioned space. 

Refer to intake pipe options for using the RF000142 kit and 

managing condensation.

T

O

 

AVOID

 

BODILY

 

INJURY

FIRE

 

OR

 

EXPLOSION

SOLVENT

 

CEMENTS

 

MUST

 

BE

 

KEPT

 

AWAY

 

FROM

 

ALL

 

IGNITION

 

SOURCES

 (

I

.

E

., 

SPARKS

OPEN

 

FLAMES

AND

 

EXCESSIVE

 

HEAT

AS

 

THEY

 

ARE

 

COMBUSTIBLE

 

LIQUIDS

A

VOID

 

BREATHING

 

CEMENT

 

VAPORS

 

OR

 

CONTACT

 

WITH

 

SKIN

 

AND

/

OR

 

EYES

.

WARNING

PREFERRED

Figure 4

TRANSITION NO LESS 

THAN 45 TO HORIZONTAL 

PLANE TO AVOID CREATING 

A WATER TRAP IN VENT 

PIPING.

° 

ACCEPTABLE

Figure 5

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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