Installation guide

ManualsBrandsCarrier ManualsFurnaceOfficial Carrier furnace

Single-Stage Deluxe

Induced-Combustion

4-W M lti i F rn

Cancels: II 310A-45-5 II 310A-45-6

4-06

installation,

Service and

Start-up, Operating, and

Maintenance instructions

Series 120/C

EFFiCiENCY

CERTiFiED

NOTE: Read tile entire instruction manual belk_re starting the

installation.

This symbol --> indicates a change since tile last issue.

--> Portions ol the Icxt and tables are reprinted hom NFPA 541ANSI Z223.1-2002©,

with permission ol National Fire Protection Association, Quincy, MA 02269 and

American Gas Association, Washington DC 20001. This rcprinlcd Inalcrial is IIot the

complete and oll]cial position ol the NFPA or ANSI on the relcrenced subject, which

is represented only by the standard in its entirety.

TABLE OF CONTENTS

SAFETY CONSIDERATIONS ..................................................... 2

INTRODUCTION .......................................................................... 3

CODES AND STANDARDS ........................................................ 3

Sali:ty ......................................................................................... 3

General Installation ................................................................... 5

Combustion and Ventilation Air .............................................. 5

Duct Systems ............................................................................ 5

Acoustical Lining and Fibrous Glass Duct .............................. 5

Gas Piping and Gas Pipe Pressure Testing .............................. 5

Electrical Connections .............................................................. 5

ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS

PROCEDURE ................................................................................ 5

LOCATION .................................................................................... 5

General ...................................................................................... 5

Location Relative to Cooling Equipment ................................ 7

AIR FOR COMBUSTION AND VENTILATION ...................... 7

INSTALLATION ......................................................................... 1I)

l.Jpflow Installation ................................................................. 10

Bottom Return Air Inlet .................................................... lI)

Side Return Air Inlet ......................................................... lI)

Leveling Legs (If Desired) ................................................ lI)

Downflow Installation ............................................................ 10

Bottom Return Air Inlet .................................................... 11

Horizontal Installation ............................................................ 12

Suspended Unit Support .................................................... 12

Platlk_rm Unit Support ....................................................... 12

Roll-Out Protection ............................................................ 12

Bottom Return Air Inlet .................................................... 13

Side Return Air Inlet ......................................................... 13

Filter Arrangement .................................................................. 13

Air Ducts ................................................................................. 13

General Requirements ....................................................... 13

Ductwork Acoustical Treatment .......................................13

Supply Air Connections .................................................... 13

Return Air Connections ..................................................... 14

Gas Piping ............................................................................... 17

Electrical Connections ............................................................ 19

115-V Wiring ..................................................................... 19

J-Bnx Relocation ............................................................... 20

Electrical Connection to J-Box ......................................... 20

Power Cord Installation ..................................................... 21

BX Cable Installation ........................................................ 21

24-V Wiring ....................................................................... 21

Accessories ........................................................................ 21

Venting .................................................................................... 23

General Venting Reqnirements ......................................... 23

Masonry Chimney Requirements ...................................... 23

Appliance Application Requirements ............................... 24

Additional Venting Requirements ..................................... 26

Sidewall Venting ............................................................... 27

START-UP, ADJUSTMENT, AND SAFETY CHECK ............ 27

General .................................................................................... 27

Start-Up Procedures ................................................................ 31

Adjustments ............................................................................. 31

Check Salety Controls ............................................................ 34

Checklist .................................................................................. 35

SERVICE AND MAINTENANCE PROCEDURES .................. 35

Introduction ............................................................................. 38

General ............................................................................... 38

Electrical Controls and Wiring ......................................... 38

Care and Maintenance ............................................................ 41

Cleaning and/or Replacing Air Filter ............................... 42

Blower Motor and Wheel .................................................. 42

Cleaning Heat Exchanger .................................................. 43

Sequence of Operation ............................................................ 44

Wiring Diagrams ..................................................................... 45

Troubleshooting ...................................................................... 45

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

PC 101 Printed in U.S.A. Pg 1 4-06

Summary of content (48 pages)

PAGE 1
Single-Stage Deluxe Induced-Combustion 4-W M lti i F rn Cancels: II 310A-45-5 II 310A-45-6 4-06 installation, Start-up, Operating, and Service and Maintenance instructions Series 120/C NOTE: Read tile entire instruction installation. manual belk_re starting the EFFiCiENCY CERTiFiED This symbol --> indicates a change since tile last issue. --> Portions ol the Icxt and tables are reprinted hom NFPA 541ANSI Z223.
PAGE 2
6-1/8" (FLUE COLLAR) -- 25-1/4" -- -- 22-9/16" -- A JUNCTION BOXm AIRFLOW D 5-15/16" ...... OUTLET LOCATION j i; 7-3/4" ACCESSORY f 112" DEATHERMOSTAT .... WIRE ENTRY _* 7/8" DIA 3-15116" i_ I ........ LEFT HAND GASS ENTRY 33-5/16" 24-7/8" LOCATFONS (TYP) 5 PLACES 7/8" D[A ACCESSORY_ (TYP) 14W/8" l 5-1/21' i i 5-1/2" 11/16"-- 11/16" 21-5/8" 1-1/4" _1-11/16" BOTTOM FNLET 22-1/16" SIDEINLET 24 _ CASENG __ __ A04037 NOTES: 1. Two additional 7/8-in.
PAGE 3
Table liDimensions F C.L. TOP AND BOTTOM FLUE COLLAR A CABINET WIDTH D SUPPLY-AIR WIDTH (IN.
PAGE 4
INSTALLATION MINIMUM INCHES CLEARANCE TO COMBUSTIBLE CONSTRUCTION DISTANCE MINIMALE EN POUCES AUX CONSTRUCTIONS COMBUSTIBLES This forced air furnace is equipped for use with natural gas at altitudes 0-10,000 fi (0-3,050m). An accessory kit, supplied by the manufacturer, shall be used to convert to propane gas use or may be required for some natural gas applications. This furnace is for indoor installation in a building con@'ucted on site.
PAGE 5
ELECTROSTATIC MAX 85°F FRONT /J MIN60OF A02055 Fig. 3iReturn Air Temperature DISCHARGE (ESD) PRECAUTIONS PROCEDURE FURNACE RELIABILITY HAZARD hnproper installation or service of furnace may cause premature furnace component failure. Electrostatic discharge can affect electronic components.
PAGE 6
AIRFLOW THE BLOWER LOCATED IS BELOW THE BURNER SECTION, AND CONDITIONED AIR IS DISCHARGED THE BLOWER TOTHE RIGHT BURNER OF THE SECTION, AIR CONDITIONED DISCHARGED AND AIR IS TO THE LEFT. 2! THE BLOWER LOCATED UPWARD. IS LOCATED ABOVE ........................................... _ HORIZO q .....................................
PAGE 7
PERSONAL INJURY AND/OR PROPERTY DAMAGE HAZARD hnproper use or installation of this furnace may cause premature fl]rnace component failure. This gas lurnace may be used %r heating buildings under construction provided that: -The furnace is permanently installed with all electrical wiring, piping, venting and dncting installed according to these installation instructions. A return air duct is pa)vided, sealed to the lm'nace casing, and terminated outside the space containing the lurnace.
PAGE 8
Table 2-Minimum Free Area Required for Each Combustion Air Opening or Duct to Outdoors TWO HORIZONTAL FURNACE iNPUT (BTUH) DUCTS SINGLE DUCT OR OPENING (1 SQ. IN./2,000 BTUH) (1,100 SQ. IvIM/KW) Free Area 01 Opening and Duct Round Duct (Sq. In.) (in. Dia) TWO OPENINGS (1 SQ. IN./3,000 BTUH) (734 SQ. MM/KW) Free Area 01 Opening and Duct Round Duct (sq In.) (in. Dia) OR VERTICAL DUCTS (1 SQ. IN./4,000 BTUH) (550 SQ. IvIM/KW) Free Area of Opening and Duct Round Duct (Sq In.) (In.
PAGE 9
VENT THROUGH DUCTS CIRCULATING I I I I I I AIR ROOF ]_l I I I I I I I I I I I I 12"MAX _< 1 SQIN. A PER 2000 T BTUH* 12" U-z [ AX -=--1SQ IN. PER 1000 OR WALL TUH*,N DOOR UNCONFINED INTERIOR HEATED SPACE DUCTS TO OUTDOORS 6" MIN SPACE (FRONT)t ! z_ 1SQIN.
PAGE 10
BO]qOM PANEL BOTTOM CLOSURE PANEL FILLER A02098 Fig. 9--Removing fi'ee area of at least l-in.2/4,000 all gas appliances 3. In spaces Bottom Closure Panel Btuh of total input rating lot A89014 in the space. that use infiltration should permanent ventilation buildings with the Indoor be adequate Combustion to provide and dilntion unusually MUST be provided Outdoor Combustion Air constrnctiom However, in additional using the methods described Air Method section.
PAGE 11
FURNACE (OR COIL CASING WHEN USED) COMBUSTIBLE FLOORING SUBBASE PLENUM __ Fig. 11iFloor and Plenum Opening • FLOOR OPENING __ . A96283 Dimensions Fig. 12iFurnace, Plenum, and Subbase a Combustible Floor Installed on A96285 FURNACE CD5 OR CK5 COIL ASSEMBLY OR KCAKC COIL BOX COMBUSTIBLE FLOORING SHEET METAL____=._ PLENUM __ FLOOR OPENING A04140 A04140 Fig. 13--Furnace, Plenum, and Coil Assembly or Coil Box Installed on a Combustible Floor 4.
PAGE 12
Table 4iOpening FURNACE CASING WIDTH Dimensions (In.
PAGE 13
DOW N FLOW PREFERRED HORIZONTAL PREFERRED PREFERRED I. \ 120_ MIN PREFERRED 120_ PREFERRED MIN PERMITTED PERMITTED PERMITTED A02329 Fig. 14--Duct Bottom Return Air Inlet Air Conditioning Contractors National Association (SMACNA) or American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE) or consult The Air Sv,_tum,;De.
PAGE 14
V4" THREADED 4 REQ. ROD J I I I I I ¢ UTER DOOR &SSEMBLY SECURE ANGLE IRON TO BOTTOM OF FURNACE WITH 3 #8 x 3/4"SCREWS TYPICAL FOR 2 SUPPORTS 8" MIN FOR DOOR REMOVAL 1" SQUARE, 1V4" x 1V4" x %" ANGLE IRON OR UNI-STRUT MAY BE USED (2) HEX NUTS, (2) WASHERS REQ. PER ROD & (2) LOCK WASHERS A05027 Fig. 15--Horizontal Unit Suspension Return [Jpflow and Horizontal Furnaces Connect supply-air duct to flanges on furnace supply-air outlet. Bend flange upward to 90 ° with wide duct pliers. (See Fig. 14.
PAGE 15
22 GAUGE GALVANIZED FOR 4 STRAPS AIR OUTER ASSEMB_ DOOR X USE (2) #8 x 3/4 SHEET METAL SCREWS TYPICAL FOR ALL STRAPS BACK OF FURNACE FOLD ALL STRAPS UNDERFURNACEAND SECURE W(2)#8x3/4 SHEET METALSCREWS A02014 Fig. 16--Horizontal Suspension with Straps 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.
PAGE 16
Table 5--Air FURNACE SiZE RETURN-AIR INLET 0.9 1.
PAGE 17
--_ Table 5--Air FURNACE SIZE RETURN-AIR INLET 066135 060155 EXTERNAL 0.4 STATIC PRESSURE (IN, WC) 0.5 0.8 0.7 0.8 0.1 0.2 0.3 0.9 1.
PAGE 18
['_ UPFLOW RETURN AIR CONFIGURATIONS AIR FLOW MODELS RETURN AIR CONNECTION ONLY AND t RESTRICTIONS RETURN AmR CONNECTION 2 ONLY RETURN AIR CONNECTmON ONLY 3 RETURN AIR COMBINATmQNS OF 1,2, AND3 066.060, -22 AND -20 MODELS YES YES YES YES ALL OTHER YES YES YES YES MODELS UP,LOW HESTHIcrloNS Fig. 18--Upflow Return Air Configurations A02075 and Restrictions DOWNFLOWRETURNAIRCONF1GURATIONSANDRESTRICTIONS CONNECTION ONLY 066.
PAGE 19
TaNe 6--Ma×imum NOMINAL IRON PiPE SiZE control Capacity of Pipe* LENGTH OF PiPE (FT) iNTERNAL DIAMETER (iN.) 10 20 30 (iN.) 1/2 0.822 175 120 97 3/4 0.824 380 250 200 valve and accessible manual equipment to operating 80 82 73 minimum inlet supply pressures marked the lurnace burners ON and OFF. 170 181 1 1.049 680 465 378 320 285 1-1/4 1.380 1400 950 770 860 580 1-1/2 1.
PAGE 20
Table 7--Electrical OPERATING VOLTAGE RANGE Maximum* Minimum* FURNACE SIZE VOLTSHERTZPHASE 045-08/024045 118-60-1 127 104 045-12/036045 115-60-1 127 104 070-08/024070 118-60-1 127 070-12/036070 115-60-1 070-16/048070 Data UNIT AMPACITY# MAXIMUM WiRE LENGTH (FT)$ MAXIMUM FUSE OR CKT BKR AMPSt 5.4 7.54 48 15 14 7.0 9.50 39 15 14 104 5.0 7.06 52 15 14 127 104 6.8 9.22 40 15 14 118-60-1 127 104 9.5 12.60 28 15 14 090-14/042090 115-60-1 127 104 8.2 10.
PAGE 21
12. Complete electrical box wiring and installation. Connect line voltage leads as shown in Fig. 25. Use best practices (NEC in U.S. and CSA C22.1 in Canada) lkw wire bushings, strain relief, O etc. 13. Reinstall cover and bracket. POWER CORD NOTE: listed Do not pinch INSTALLATION Power ments to J-Box. wires between 1N FURNACE cords nmst be able to handle ilk Table 5. Relier cover J-BOX the electrical to power cord require- nmnulhcturer's listings. 1. Remove cover 2.
PAGE 22
TWINNING AND/OR COMPONENT TEST TERMINAL BLOWER OFF-DELAY "x J2 JUMPER x HUMIDIFIER TERMINAL (24-VAC 0.5 AMP MAX.) 24-V THERMOSTAT TERMINALS TRANSFORMER 24-VAC CONNECTIONS 3-AMP FUSE ob LED OPERATION & DIAGNOSTIC LIGHT 115-VAC(L2)NEUTRAL CONNECTIONS _ BLOWER SPEED SEC-2 _/ PL1 -LOW VOLTAGE MAIN HARNESS CONNECTOR SEC-1 SPARE-2 _ SELECT,ON\ / bHAHk-2 ALS // / 115VAC(L1)LINE _ - VOLTAGE CONNECTION IGNITER & INDUCER MOTOR CONNECTOR EAC-1 TERMINAL (115-VAC 1.0 AMP MAX.) A02100 Fig.
PAGE 23
VENTING Nutural The fln'nace 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 cbinmey is prohibited. (NSCNGPIC), Section 7 and Appendix C in Canada, the local building codes, and lhrnace and vent manulacturers' instructions. When an existing Category 1 furnace is removed or replaced, the original venting system may no longer be sized to properly vent the attached appliances.
PAGE 24
as tile ChimneyAdapterKits KGACA(I2(I14FC and KGACA(t2(tI5FC, whicharclisted li)rusewiththese lin'naces. TheChimney Adapter Kitislisted alternative venting system li}r these furnaces. Seethekitinstructions liwcomplete details. Canada (andU.S.Ao)-This furnace ispemdtted tobevented into aclaytile-lined masonry chimney thaiisexposed totheoutdoors below theroofline,provided: 1.Ventconnector isType-B double-wall, and 2.Thisfurnace is common vented withatleast1 drallhoodequipped appliance, and 3.
PAGE 25
CHIMNEY INSPECTION CHART For additional requirements refer to the National Fuel Gas Code NFPA 54/ANSI Z223.1 and ANSI/NFPA 211 Chimneys, Fireplaces, Vents, and Solid Fuel Burning Appliances in the U.S.A. or to the Canadian installation Code CSA-B149.1 in Canada. Rebuild crown. Repair liner or top seal or reline chimney as/- Reline necessy "_ Debris in cleanout? Mortar, tile, metal venl fuel oil residue? Repair Mortar or tile debris? Remove metal vent or liner.
PAGE 26
A04127 Fig. 27--Using To prevent condensation lollowing precautions I. Tile return-air and db or vent during initial l?'om setback start-up rate condensation system. causes and Derating low vent corrosion above. gas temperature instructions. venting above 2000 It. of the rise range rise can cause low vent lbr condensation heat anticipator Low causing and/or rise to the midpoint Low air temperature liar a standby temperatures, only lor altitudes and potential 4.
PAGE 27
BURN HAZARD Failure to lollow this caution vent pipe is within downflow in instruction. Vent Guard KiL KGAVG0101DFG applications li.w use where the vent exits through lower of the furnace portion portion or straps to ensure there This furnace is not approved In the U.S.: Per section renter may be system supported VENTING every to tile metal after installation. sidewall approved upwards 5 It or less with is no movement lbr direct when shall slope from tile furnace 10.3.
PAGE 28
© SEE NOTES: SEE NOTES: 1,2,4,5,7,8,9 on the page following these figures 1,2,4,7,8,9 on the page following these figures A03208 Fig. 32--Upflow ._ "°= Application-Vent A03211 Elbow Up Fig. 35--Downflow Application-Vent i Elbow Up © © SEE NOTES: 1,2,4,5,6,7,8,9,10 on the page following these figures SEE NOTES: 1,2,3,4,7,8,9 on the pages following these figures A03207 A03209 Fig. 33--Upflow Application-Vent Elbow Right Fig.
PAGE 29
© SEE NOTES: 1,2,4,7,8,9 following these figures on the page SEE NOTES: 1,2,4,5,7,8,9 following these figures A03213 Fig. 38--Horizontal Left Application-Vent Elbow Left Fig. 40--Horizontal : tl on the page Left Application-Vent ElboA°_ 5 1i © © SEE NOTES: 1,2,4,5,7,8,9 following these figures on the page SEE NOTES: 1,2,4,5,7,8,9 following these figures A03214 Fig. 39--Hodzontal Left ApplicationVent Elbow Right then Up Fig.
PAGE 30
SEE NOTES: 1,2,4,5,7,8,9 A02068 Fig. 44--Horizontal Right Application-Vent Venting Notes Elbow Left for Fig. 32-44 1. For conm_on vent, vent connector sizing and vent material: United States--use the NFGC Canada--use the NSCNGPIC 2. hnmediately increase to 5-inch or 6-inch vent connector outside furnace casing when 5-inch vent connector is required, rcl_:r to Note 1 above. 3.
PAGE 31
Step2--Start-Up Procedures W FIRE AND * EXPLOSION Table 8-ARitude ALTITUDE " (FT) 0-2000 HAZARD Derate Muitipler PERCENT OF DERATE for U.S.A. DERATE MULTiPLiER FACTOR* 0 1.00 2001-3000 8-12 0.90 300t-4000 12-16 0.86 use 400t-5000 16-20 0.82 matches, candles, flame, or other sources of ignition lbr the purpose of checking leakage. Use a soap-and-water solution 5001-6000 20-24 0.78 6001-7000 24-28 0.74 to check 700t-8000 28-32 0.70 8001-9000 32-38 0.
PAGE 32
d. Find closest natural Table 12 or 13. gas heat value and specific e. Follow and specific heat value intersection settings to find lbr proper orifice gravity size lines and gravity in to point of manilbld If clocked rate does not match required input from Step 1. increase manilold pressure to increase input or decrease mani%ld pressure to decrease input. Repeat steps b through e until correct input is achieved. Reinstall regulator seal cap on gas valve. pressure 5.
PAGE 33
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO0 CONNECTION DIAGRAM TO 115VAC FIELD I_ DISCONKECT Lq --/_7 ILK (WHEN USE)) SWITCH NEU_:_AL SCHEMA]]C • DIAGRAM (NATURAL& PROPANE GASE"_ ........... • -- FAN LO F_AT n CAP • M_DL 0 NOTE _0 _ START L1 L21 ' • EAO-2 • H,_R _YHEN US_)) LGPS PF,_I_ .WAC TPAN • -- • ('_MdEN USED) WriT • (COM) %*o NOTE#15 .......
PAGE 34
REGULATOR TERMINALS THERMOSTAT WITH REMOVED (ANITIDIPATOR, MUST BE OUT REGULATOR CLOCK, ETD., OF CIRCUIT.) SCREW REGULATOR SPRING 1/2" NPT INLET GASPBESSUBE ADJUSTMENT INLET PRESSURE TAP FROM UNIT 24-V CONTROL TERMINALS MANIFOLD EXAMPLE: 1/2" NPT OUTLET j) 5.0AMPSONAMMETER 10 TURNS AROUND JAWS = 0.5AMPSFORTHERMOSTAT ANTICIPATOR SETTING A04166 Fig. 46--Gas Control A96316 Fig. 48--Amp Valve Draw Check With Ammeter (1.) Remove thermoslat fl'om subbase or l'rom walh (2.
PAGE 35
e. Furnace Table 10-GAS RATE (CU FT/HR) SECONDS FOR 1 REVOLUTION SIZE OF TEST DiAL 1 Cu Ft 2 Cu Ft 5 Cu Ft 10 360 720 1800 11 327 855 1636 12 300 600 13 277 555 14 257 15 240 SECONDS FOR 1 REVOLUTION should SIZE OF TEST DIAL 1 Cu Fti 2 Cu Ft 5 Cu Ft f. Remove 50 72 144 380 g. Switch 51 71 141 355 h. Re-install 1500 52 69 138 346 1385 53 68 136 340 514 1286 54 67 133 333 480 1200 55 85 131 blockage when vent elbow. it cools.
PAGE 36
Table 12--Orifice Size* and Manifold Pressure For Gas Input Rate (Tabulated Data Based On 22,000 Btuh Per Burner, Derated 4 Percent For Each 1000 Ft Above Sea Level) SPECIFIC GRAVITY ALTITUDE RANGE (FT) AVG GAS HEAT VALUE (BTU/CU FT) 0.58 Orifice No. 0.60 Manifold Pressure OF NATURAL Orifice No. 0.64 Manifold Pressure Manifold Pressure Orifice No. 3.5 42 3.6 42 3.7 41 3.5 3.3 42 3.4 42 3.5 42 3.7 I Orifice No. GAS 0.62 Manifold Pressure 9OO 42 925 42 95O 43 I 3.8 42 3.
PAGE 37
Table 12--Orifice Size* And Manifold Pressure For Gas input Rate (Continued) (Tabulated Data Based On 22,000 Btuh Per Burner, Derated 4 Percent For Each 1000 Ft Above Sea Level) ALTITUDE RANGE (FT) = O 6001 to 6000 ALTITUDE RANGE (FT) O 6001 to 7000 ALTITUDE RANGE (FT) = O 7001 _." ¢0 to 8000 ALTITUDE RANGE (FT) >, = O _.. ¢o.. 8001 to 9000 AVG GAS HEAT VALUE AT ALTITUDE SPECiFiC 0.58 GRAVITY OF NATURAL 0.60 GAS 0.62 0.64 Orifice No. Manifold Pressure Orifice No.
PAGE 38
Table 12--Orifice Size* And Manifold Pressure For Gas input Rate (Continued) (Tabulated Data Based On 22,000 Btuh Per Burner, Derated 4 Percent For Each 1000 Ft Above Sea Level) O SPECiFiC AVG GAS HEAT VALUE AT ALTITUDE ALTITUDE RANGE (FT) GRAVITY OF NATURAL 0.60 GAS 0.62 0.64 Orifice No. Manifold Pressure Orifice No. Manifold Pressure Orifice No. Manifold Pressure Orifice No. Manifold Pressure 600 43 2.7 43 2.8 43 2.9 43 3.0 625 43 2.5 43 2.6 43 2.6 43 2.7 43 2.
PAGE 39
Table 13--Orifice Size* and Manifold Pressure For Gas input Rate Data Based On 21,000 Btuh Per Burner, Derated 4 Percent For Each 1000 Ft Above Sea Level) (Tabulated SPECIFIC ALTITUDE RANGE (FT) AVG GAS HEAT VALUE (BTU/CU FT) Orifice No. 0.58 Manifold Pressure 900 42 925 431 I 950 431 975 43 II 1000 44 1025 44 1050 Orifice No. 3.2 42 GRAVITY 0.60 Manifold Pressure OF NATURAL Orifice No. GAS 0.62 Manifold Pressure Orifice No. 0.64 Manifold Pressure 3.3 42 3.4 42 3.5 3.
PAGE 40
Table 13--Orifice Size* And IVlanifold Pressure For Gas input Rate (Continued) (Tabulated Data Based On 21,000 Btuh Per Burner, Derated 4 Percent For Each 1000 Ft Above Sea Level) SPECIFIC ALTITUDE RANGE (FT) = O 5001 _ to 6000 ALTITUDE RANGE (FT) = O 6001 to 7000 ALTITUDE RANGE (FT) = O 7001 to 8000 AT ALTITUDE AVG GAS (BTU/CU FT) 0.58 GRAVITY OF NATURAL 0.60 GAS 0.62 0.64 Orifice No. Manifold Pressure Orifice No. Manifold Pressure Orifice No. Manifold Pressure Orifice No.
PAGE 41
Table 13--Orifice Size* And Manifold Pressure For Gas input Rate (Continued) (Tabulated Data Based On 21,000 Btuh Per Burner, Derated 4 Percent For Each 1000 Ft Above Sea Level) = O 10,000 0.58 GRAVITY OF NATURAL 0.80 GAS 0.62 0.64 Orifice No. Manifold Pressure Orifice No. Manifold Pressure Orifice No. Manifold Pressure Orifice No. Manifold Pressure 600 43 2.4 43 2.5 43 2.6 43 2.7 628 43 2.3 43 2.3 43 2.4 43 2.5 650 43 2.1 43 2.2 43 2.2 43 2.3 678 700 48 48 3.
PAGE 42
BLOWER MOTOR AND WHEEL W • 0 CUT HAZARD Failure to %llow this caution may result in personal injury. Sheet metal parts may have sharp edges or burrs. Use care and wear appropriale protective clothing, salety glasses and gloves when handling parts and servicing furnaces. ELECTRICAL SHOCK HAZARD Failure to lbllow this warning could result in personal injury or death. Blower access door switch opens 115-v power to contrnh No component operation can occur unless switch is closed.
PAGE 43
e.Remove blower wheel l_'om housing. f. Clean wheel andhousing. 12.Reassemble motor andblower byreversing steps 1If through 11 a,finishing with1l a.Besuretoreattach ground wiretothe blower housing. 13.Veril_y thatblower wheel iscentered inblower bousing andset screw contacts theflatportion ofthemotor shali.Loosen set screw onblower wheel andmposition if necessary. 14.Spintheblower wheel byband toverifythatthewheel does notrubonthehousing. 15.Reinstall blower assembly inlurnace. 16.
PAGE 44
9/32" _ ................. _/ .............................. A91252 Fig. 52--Cleaning b. Inducer A05025 Fig. 50ilgniter d. Limit Cell motor. c. Pressure Position-Side View Heat Exchanger switch(es). over-temperature switch. e. Gas valve. f. Hot surface .... / 1-!/8" A05026 Fig. 51ilgniter Position-Top electrode. h. Flame rollout switches. i. Install NOx baffles 14. Reinstall internal 15. Reinstall vent fasten View igniter. g. Flame-sensing vent pipe, iX' applicable.
PAGE 45
circuit. The fl]rnace pressure switch motor IDM. a. Inducer control contacts Prepurge comes Period- up to speed, 24 VAC power performs As the pressure is supplied tile HUM terndnal a self-check, verifies start the flarnace blower motor BLWM on COOL speed. Tile electronic air cleaner ternfinal EAC-I is energized with 115 vac when the blower motor BLWM is operating. When the thermostat is satisfied, the R-to-G-and-Y circuits are opened.
PAGE 46
Fig. 53--Troubleshooting Guide START Is LED status light on? '_'_ Is there 115V at L1 and L2? _ Is door switch closed? -._ Is door switch closed? '-'_ Is circuit breaker closed? YES L YEs I Is there 24V at SEC-1 and SEC-2? k _._ L ES I Replace Is LED status light blinking pause? rapidly without Is LED status light blh_kh_g ON/OFF slowly of short and long flashes? status code. The status J I I Is there 115V going to switch? L ES [Replaced --_ Replace ....... itch.
PAGE 47
NO PREVIOUS CODE - Stored codes PRESSURE are erased after 72 hours. On RED LED boards stored status codes can also be erased whenever power (115V or 24V) is interrupted. Run system hea ing or cooling BLOWER cycle ON AFTER through a o check sys em. POWER UP- (115V OR 24V) - Normal operation. Blower runs for 90 seconds, if unit is powered up during a call for heat (R-W closed) or when (R-W opens) during the blower on-delay period.
PAGE 48
Copyright 2000 Carrier Corporation Manufacturer reserves the right to discontinue, B°°kL__ Tab 16al 8a PC 101 or change at any time, specifications Printed in U.S.A. or designs without notice Pg 48 and without incurring obligations.