Carrier N80VSL Instruction Manual Download Page 49

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Specifications are subject to change without notice.

441 01 3700 00

LEF

AND

NER

RES

FLAS

A190282

Fig. 52 -- Troubleshooting Guide (Continued)

Summary of Contents for N80VSL

Page 1: ...port 11 Platform Furnace Support 11 Roll Out Protection 11 Return Air Inlet 11 Filter Arrangement 12 AIR DUCTS 12 GAS PIPING 19 ELECTRICAL CONNECTION 20 ACCESSORIES 23 VENTING 25 START UP ADJUSTMENT AND SAFETY CHECK 33 Start Up Procedures 33 Service Label 34 Adjustments 35 Check Safety Controls 40 Checklist 40 SERVICE AND MAINTENANCE PROCEDURES 40 Wiring Diagram 42 Care and Maintenance 42 Sequence...

Page 2: ...51716A 17 1 2 445 15 7 8 403 11 9 16 294 16 406 4 102 120 54 16 406 0701716A 17 1 2 445 15 7 8 403 11 9 16 294 16 406 4 102 129 59 16 406 0702120A 21 533 19 3 8 492 13 5 16 338 19 1 2 495 4 102 141 63 20 506 0902120A 21 533 19 3 8 492 13 5 16 338 19 1 2 495 4 102 143 65 20 506 0902420A 24 1 2 622 22 7 8 581 15 1 16 383 23 584 4 102 150 68 24 610 1102422A 24 1 2 622 22 7 8 581 15 1 16 383 23 584 4 ...

Page 3: ...ds which may result in minor personal injury or product and property damage NOTE is used to highlight suggestions which will result in enhanced installation reliability or operation 1 Use only with type of gas approved for this furnace Refer to the furnace rating plate 2 Install this furnace only in a location and position as spe cified in the Location section of these instructions 3 Provide adequ...

Page 4: ...he fur nace chassis which is close to the control Tools held in a person s hand during grounding will be satisfactorily dis charged 3 After touching the chassis you may proceed to service the control or connecting wires as long as you do nothing to recharge your body with static electricity for example DO NOT move or shuffle your feet do not touch un grounded objects etc 4 If you touch ungrounded ...

Page 5: ...ted States follow all codes and standards for the following Safety NFPA 54 ANSI Z223 1 and the Installation Standards Warm Air Heating and Air Conditioning Systems ANSI NFPA 90B General Installation Current edition of the NFGC and the NFPA 90B For copies contact the National Fire Protection Association Inc Batterymarch Park Quincy MA 02269 www NFPA org or for only the NFGC contact the American Gas...

Page 6: ...nated waxes and cleaners S Chlorine based swimming pool chemicals S Water softening chemicals S De icing salts or chemicals S Carbon tetrachloride S Halogen type refrigerants S Cleaning solvents such as perchloroethylene S Printing inks paint removers varnishes etc S Hydrochloric acid S Cements and glues S Antistatic fabric softeners for clothes dryers S Masonry acid washing materials All fuel bur...

Page 7: ...ctions CAUTION A02054 Fig 6 Prohibit Installation on Back AIR FOR COMBUSTION AND VENTILATION Provisions for adequate combustion ventilation and dilution air must be provided in accordance with S U S Installations Section 9 3 of the NFPA 54 ANSI Z223 1 Air for Combustion and Ventilation and ap plicable provisions of the local building codes FURNACE CORROSION HAZARD Failure to follow this caution ma...

Page 8: ...eely communicate with the outdoors Indoor Combustion AirE NFPA AGA Standard and Known Air Infiltration Rate Methods Indoor air is permitted for combustion ventilation and dilution if the Standard or Known Air Infiltration Method is used CARBON MONOXIDE POISONING HAZARD Failure to follow this warning could result in personal injury or death Many homes require air to be supplied from outdoors for fu...

Page 9: ...ethod above multiplied by reduction Factor in b above The min imum dimension of air openings shall be not less than 3 in 80 mm Table 1 Minimum Free Area Required for Each Combustion Air opening of Duct to Outdoors FURNACE INPUT BTUH TWO HORIZONTAL DUCTS SINGLE DUCT OR OPENING TWO OPENINGS OR VERTICAL DUCTS 1 SQ IN 2 000 BTUH 1 100 SQ MM KW 1 SQ IN 3 000 BTUH 734 SQ MM KW 1 SQ IN 4 000 BTUH 550 SQ ...

Page 10: ...hten inside nut to secure arrangement 5 Reinstall bottom closure panel if removed DOWNFLOW INSTALLATION NOTE For downflow applications this furnace is approved for use on combustible flooring when any one of the following 3 accessories are used S Downflow combustible floor subbase S Cased Coil numbers END4X ENW4X S Coil casing model number NAEA 1 Determine application being installed from Table 3 ...

Page 11: ...roll out protection in front of burner area for furnaces closer than 12 in 305 mm above the combustible deck or suspended furnaces closer than 12 in 305 mm to joists The sheet metal MUST extend underneath the furnace casing by 1 in 25 mm with the door removed The bottom closure panel on furnaces of widths 17 1 2 in 445 mm and larger may be used for flame roll out protection when bottom of furnace ...

Page 12: ...he external filter rack for assembly and installation options AIR DUCTS General Requirements The duct system should be designed and sized according to accepted national standards such as those published by Air Conditioning Contractors Association ACCA Sheet Metal and Air Conditioning Contractors National Association SMACNA or American Society of Heating Refrigerating and Air Conditioning Engineers...

Page 13: ... Fig 14 The supply air duct must be connected to ONLY the furnace supply outlet or air conditioning coil casing when used When installed on combustible material supply air duct must be connected to ONLY the factory approved accessory subbase or a factory approved air conditioning coil casing DO NOT cut main furnace casing to attach supply side air duct humidifier or other accessories All accessori...

Page 14: ...S IN BOTTOM A10131 Fig 16 Horizontal Suspension with Straps 30 IN 762mm MIN WORK AREA 6 MIN TYPE B VENT 17 3 4 22 SHEET METAL SEDIMENT TRAP EQUIPMENT MANUAL SHUT OFF GAS VALVE LINE CONTACT ONLY PERMISSIBLE BETWEEN LINES FORMED BY INTERSECTIONS OF THE TOP AND TWO SIDES OF THE FURNACE JACKET AND BUILDING JOISTS STUDS OR FRAMING GAS ENTRY 17 3 4 451mm OVERALL 4 3 4 121mm UNDER DOOR 1 25mm UNDER FURNA...

Page 15: ...ge without notice 441 01 3700 00 15 A190270 Fig 18 Upflow Return Air Configurations and Restrictions A190271 Fig 19 Downflow Return Air Configurations and Restrictions A02162 Fig 20 Horizontal Return Air Configurations and Restrictions ...

Page 16: ...680 630 ON OFF ON 1025 980 940 895 850 810 765 725 680 630 ON ON OFF 1025 980 940 895 850 810 765 725 680 630 ON ON ON 1025 980 940 895 850 810 765 725 680 630 Heating SW1 Heat Airflow3 925 875 830 780 735 685 635 590 540 490 Unit Size 0701716A Clg CF Switch settings External Static Pressure ESP Clg Switches SW2 8 SW2 7 SW2 6 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 0 Clg Default OFF OFF OFF 1595 156...

Page 17: ...45 1200 1155 1105 1060 1005 960 ON ON OFF 1400 1345 1295 1245 1200 1155 1105 1060 1005 960 ON ON ON 1400 1345 1295 1245 1200 1155 1105 1060 1005 960 Heating SW1 Heat Airflow3 1435 1385 1335 1290 1245 1195 1145 1100 1050 1000 Unit Size 0902120A Clg CF Switch settings External Static Pressure ESP Clg Switches SW2 8 SW2 7 SW2 6 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 0 Clg Default OFF OFF OFF 1985 1935...

Page 18: ...450 1380 1315 1250 1165 1090 1020 955 890 825 ON ON OFF 1630 1570 1510 1450 1385 1320 1250 1185 1125 1070 ON ON ON 1630 1570 1510 1450 1385 1320 1250 1185 1125 1070 Heating SW1 Heat Airflow3 1740 1680 1625 1570 1510 1445 1385 1325 1265 1205 Unit Size 1102422A Clg CF Switch settings External Static Pressure ESP Clg Switches SW2 8 SW2 7 SW2 6 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 0 Clg Default OFF O...

Page 19: ...sing Bypass humidifier may be attached into unused return air side of the furnace casing See Fig 18 and 20 Not all upflow and horizontal furnace models are approved for side return air connections See Fig 18 and 20 GAS PIPING FIRE OR EXPLOSION HAZARD Failure to follow this warning could result in personal injury death and or property damage Never purge a gas line into a combustion chamber Never te...

Page 20: ... a sediment trap in riser leading to furnace as shown in Fig 22 Connect a capped nipple into lower end of tee Capped nipple should extend below level of furnace gas controls Place a ground joint union between furnace gas control valve and exterior manual equipment gas shutoff valve A 1 8 in 3 mm NPT plugged tapping accessible for test gauge connection MUST be installed immediately upstream of gas ...

Page 21: ... BKR AMPS MIN WIRE GAUGE Max Min 0451716A 115 60 1 127 104 10 7 34 10 6 15 14 0701716A 115 60 1 127 104 14 3 25 7 9 15 14 0702120A 115 60 1 127 104 17 3 33 10 1 20 12 0902120A 115 60 1 127 104 14 6 25 7 7 15 14 0902420A 115 60 1 127 104 14 6 25 7 7 15 14 1102422A 115 60 1 127 104 18 1 31 9 7 20 12 Permissible limits of the voltage range at which the unit operates satisfactorily Unit ampacity 125 p...

Page 22: ...ox hole knockout and posi tion the hole in the electrical box over the hole in the fur nace casing 3 Fasten the electrical box to casing by driving two field supplied screws from inside electrical box into casing steel 4 Remove and save two screws holding J Box See Fig 23 5 Pull furnace power wires out of 1 2 in 12 mm diameter hole in J Box Do not loosen wires from strain relief wire tie on outsid...

Page 23: ...he terminals are rated for 115VAC 1 0 amps maximum and are energized during blower motor operation See Fig 26 2 Humidifier HUM Connect an accessory 24 VAC 0 5 amp maximum hu midifier if used to the 1 4 in male quick connect HUM terminal and COM 24V screw terminal on the control board thermostat strip The HUM terminal is energized when blower is energized in heating See Fig 26 NOTE DO NOT connect f...

Page 24: ...441 01 3700 00 Specifications are subject to change without notice 24 A190207 Fig 26 Variable Speed ECM Blower Motor NOTE 9 NOTE 9 ...

Page 25: ...d when the low pressure switch closes during a call for heat 6 When connecting 115 VAC to humidifier use a separate 115 VAC supply 7 When using a humidifier on a HP installation connect humidifier to hot water VENTING The furnace shall be connected to a listed factory built chimney or vent or a clay tile lined masonry or concrete chimney Venting into an unlined masonry chimney or concrete chimney ...

Page 26: ... WARNING Vent system or vent connectors may need to be resized Vent systems or vent connectors must be sized to approach minimum size as determined using appropriate table found in the current edition of NFGC General Venting Requirements Follow all safety codes for proper vent sizing and installation requirements including local building codes the National Fuel Gas Code NFPA 54 ANSI Z223 1 NFGC Pa...

Page 27: ...ebris in cleanout Mortar tile metal vent fuel oil residue Is liner and top seal in good condition Is chimney property lined with clay tile liner Crown condition Missing mortar or brick Rebuild crown Yes Yes No No No Reline Yes Repair Yes Yes Yes No No Remove mortar and tile debris Remove metal vent or liner No No No No Yes Yes Suitable Suitable Not Suitable Line chimney with property sized listed ...

Page 28: ...1 Section 12 10 for additional information on condensate drains b Indicates the chimney exceeds the maximum permiss ible size in the tables the chimney should be rebuilt or relined to conform to the requirements of the equip ment being installed and the authority having jurisdic tion A chimney without a clay tile liner which is otherwise in good condition shall be rebuilt to conform to ANSI NFPA 2...

Page 29: ...lied 4 in 102 mm to 5 in 127 mm or 4 in 102 mm to 6 in 152 mm sheet metal increaser fitting is required when 5 in 127 mm or 6 in 152 mm vent connector is used See Fig 29 41 Venting Orientation for approved vent configurations NOTE Vent connector length for connector sizing starts at furnace vent elbow The 4 in 102 mm vent elbow is shipped for upflow configuration and may be rotated for other posit...

Page 30: ...nt Elbow Right SEE NOTES 1 2 3 4 5 7 8 9 on the page following these figures A03210 Fig 31 Downflow Application Vent Elbow Up then Left SEE NOTES 1 2 4 5 7 8 9 on the page following these figures A03211 Fig 32 Downflow Application Vent Elbow Up SEE NOTES 1 2 4 5 6 7 8 9 10 on the page following these figures A03207 Fig 33 Downflow Application Vent Elbow Left then Up ...

Page 31: ...ent Elbow Left SEE NOTES 1 2 4 5 7 8 9 on the page following these figures A03214 Fig 36 Horizontal Left Application Vent Elbow Right then Up SEE NOTES 1 2 4 7 8 9 on the page following these figures A03218 Fig 37 Horizontal Right Application Vent Elbow Right SEE NOTES 1 2 4 5 7 8 9 on the page following these figures A03215 Fig 38 Horizontal Left Application Vent Elbow Up SEE NOTES 1 2 4 5 7 8 9 ...

Page 32: ...to furnace elbow with 2 corrosion resistant sheet metal screws spaced approximately 180_ apart 9 Secure all other single wall vent connector joints with 3 corrosion resistant screws spaced approximately 120_ apart Secure Type B vent connectors per vent connector manufacturer s recommendations Caution For the following applications use the minimum vertical heights as specified below For all other a...

Page 33: ...ed furnace con trol has DIP switches to select thermostat staging blower off delay timings air flow selection and other operational or service related functions See Fig 26 48 and Table 46 CUT HAZARD Failure to follow this caution may result in personal injury Sheet metal parts may have sharp edges or burrs Use care and wear appropriate protective clothing safety glasses and gloves when handling pa...

Page 34: ...em in case of a component failure Component test feature will not operate if any thermostat signal is present at the control Refer to service label attached to furnace or See Fig 45 Component test sequence is as follows a Inducer motor starts and continues to run until Step d of component test sequence b Hot surface igniter is energized for 15 sec then off c Blower motor operates for 15 sec d Afte...

Page 35: ...nput rate must be within 2 percent of furnace rating plate input 1 Determine the correct gas input rate The input rating for altitudes above 2 000 ft 610 M must be reduced by 4 percent for each 1 000 ft 305 M above sea level For installations below 2000 Ft 610 M refer to the unit rating plate For installations above 2000 Ft 610 M multiply the input on the rating plate by the de rate multi plier in...

Page 36: ... pressure less than 3 2 In W C or more than 3 8 In W C for natural gas at sea level If manifold pressure is outside this range change main burner orifices NOTE If orifice hole appears damaged or it is suspected to have been redrilled check orifice hole with a numbered drill bit of correct size Never redrill an orifice A burr free and squarely aligned orifice hole is essential for proper flame char...

Page 37: ...erminals when furnace is in heating and after blower starts 4 Set heat anticipator on thermostat per thermostat in structions and install on subbase or wall b Electronic thermostat Set cycle rate for 4 cycles per hr 7 Adjust blower off delay The blower off delay has 4 ad justable settings from 90 sec to 180 sec The blower off delay jumpers are located on the furnace control board See Fig 26 To cha...

Page 38: ...441 01 3700 00 Specifications are subject to change without notice 38 Table 11 Orifice Size and Manifold Pressure In W C for Gas Input Rate A10180 ...

Page 39: ...Specifications are subject to change without notice 441 01 3700 00 39 Table 11 Orifice Size and Manifold Pressure In W C for Gas Input Rate CONT A10180A ...

Page 40: ...ch is functioning properly hot sur face igniter should NOT glow and control diagnostic light flashes a status code 3 If hot surface igniter glows when inducer motor is disconnected shut down furnace immediately e Determine reason pressure switch did not function properly and correct condition f Turn off 115 v power to furnace g Reconnect inducer motor wires replace outer door and turn on 115 v pow...

Page 41: ...l NOT be erased from the control memory when 115 or 24 v power is interrupted The control will store up to the last 7 Status Codes in order of occurrence 1 To retrieve status codes proceed with the following NOTE NO thermostat signal may be present at control and all blower OFF delays must be completed a Leave 115 v power to furnace turned on b Remove outer access door c Look into blower access do...

Page 42: ...er volatile fluids 3 Paint thinners and other painting compounds paper bags or other paper products Exposure to these materials could lead to corrosion of the heat exchangers WARNING For continuing high performance and to minimize possible furnace failure periodic maintenance must be performed on this furnace Consult your local dealer about proper frequency of maintenance and the availability of a...

Page 43: ...ith the replacement media 6 Slide filter into cabinet 7 Replace filter cabinet door 8 Turn on electrical supply to furnace Blower Motor and Wheel ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death Blower access door switch opens 115 v power to control No component operation can occur unless switch is closed Caution must be taken when manually closing th...

Page 44: ...oling cycle Verify the furnace temper ature rise as shown in Adjustments Section Adjust tem perature rise as shown in Adjustments Section If outdoor temperature is below 70_F turn off circuit breaker to out door unit before running furnace in the cooling cycle Turn outdoor circuit breaker on after completing cooling cycle Cleaning Heat Exchanger The following steps should be performed by a qualifi...

Page 45: ...et thermostat above room temperature and check furnace for proper operation 18 Verify blower airflow and speed changes between heating and cooling FIRE OR EXPLOSION HAZARD Failure to follow this warning could result in personal injury death and or property damage Never purge a gas line into a combustion chamber Never test for gas leaks with an open flame Use a commercially available soap solution ...

Page 46: ...ower is interrupted the stored history is erased and the furnace control CPU will select low cooling for up to 20 minutes and then energize the air conditioning relay ACR to energize the Y Y2 terminal and switch the outdoor unit to high cooling as long as the thermostat continues to call for cooling Subsequent selection is based on stored history of the thermostat cycle times The wall thermostat c...

Page 47: ...s procedure enough you will eventually shift the contin uous blower airflow to the lowest CF selection as shown in Table 4 and Fig 47 The selection can be changed as many times as desired and is stored in the memory to be automatically used following a power interruption NOTE If the blower off delay is set to the maximum the adjustable continuous fan feature is locked i e fan speed cannot be chang...

Page 48: ...441 01 3700 00 Specifications are subject to change without notice 48 A190281 Fig 52 Troubleshooting Guide ...

Page 49: ...Specifications are subject to change without notice 441 01 3700 00 49 NOTE NUMBER IN UPPER LEFT HAND COR NER REPRESENTS FLASH CODE A190282 Fig 52 Troubleshooting Guide Continued ...

Page 50: ...17 16 TO OBTAIN INFORMATION ON PARTS Consult your installing dealer or the classified section of your local telephone directory under the Heating Equipment or Air Conditioning Contractors and Systems headings for dealer listing by brand name or contact International Comfort Products Consumer Relations Department P O Box 128 Lewisburg TN 37091 USA 931 270 4100 Have available the product model numbe...

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