Bryant PLUS 95S Installation Instructions Manual Download Page 62

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

2008 Bryant Heating & Cooling Systems 7310 W. Morris St. Indianapolis, IN 46231

Printed in U.S.A.

Edition Date: 12/08

Replaces: II355CAV--- 060--- 3

Catalog No. II355CAV---060---4

355C

Summary of Contents for PLUS 95S

Page 1: ...d service personnel The authority having jurisdiction gas inspection authority municipal building department fire department etc should be consulted before installation to determine the need to obtain a permit ama REGISTERED ISO 9001 2000 CERTIFIED Consignes spéciales pour l installation de ventillation au Canada L installation faite au Canada doit se conformer aux exigences du code CSA B149 Ce sy...

Page 2: ... exhaust vent terminal for the horizontally vented gas fueled heating appliance or equipment The sign shall read in print size no less than one half 1 2 inch in size GAS VENT DIRECTLY BELOW KEEP CLEAR OF ALL OBSTRUCTIONS 4 INSPECTION The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not approve the installation unless upon inspection the inspector obs...

Page 3: ...Failure to follow this warning could result in personal injury death or property damage Improper installation adjustment alteration service maintenance or use can cause carbon monoxide poisoning explosion fire electrical shock or other conditions which may cause personal injury or property damage Consult a qualified installer service agency local gas supplier or your distributor or branch for info...

Page 4: ...Installation Codes and Canadian Electrical Code CSA C22 1 Recognize safety information This is the safety alert symbol When you see this symbol on the unit and in instructions or manuals be alert to the potential for personal injury Understand the signal words DANGER WARNING and CAUTION These words are used with the safety alert symbol DANGER identifies the most serious hazards which will result i...

Page 5: ...imize the corrosive effects of adhesives sealers and other construction materials It also prevents the en trainment of drywall dust into combustion air which can cause fouling and plugging of furnace components S The temperature of the return air to the furnace is main tained between 55_F 13_C and 80_F 27_C with no evening setback or shutdown The use of the furnace while the structure is under con...

Page 6: ...6 335122 201 REV B LIT TOP A08435 Fig 3 Clearances to Combustibles 60 80 27 C 16 C A06745 Fig 4 Return Air Temperature 18 IN 457 2 mm MINIMUM TO BURNERS A93044 Fig 5 Installation in a Garage 355CAV ...

Page 7: ...des S CANADA CAN CSA B149 1 05 Parts 4 5 6 and 9 In the state of Massachusetts S This product must be installed by a licensed plumber or gas fitter S When flexible connectors are used the maximum length shall not exceed 36 inches 914 mm S When lever type gas shutoffs are used they shall be T handle type S The use of copper tubing for gas piping is not approved by the state of Massachusetts Electri...

Page 8: ...7 or tube routing label on main furnace door to confirm location of these tubes 1 Collector Box Drain Inducer Housing Drain Relief Port and Pressure Switch Tubes These tubes should be factory attached to condensate trap and pressure switch ready for use in UPFLOW applica tions These tubes can be identified by their connection location and also by a color label on each tube These tubes are identifi...

Page 9: ...alternate location for the condensate trap is the left hand side of casing See Fig 2 and 8 NOTE If the alternate left hand side of casing location is used the factory connected drain and relief port tubes must be disconnected and modified for attachment See Condensate Trap Tubing Alternate Upflow Orientation section for tubing attachment To relocate condensate trap to the left hand side perform th...

Page 10: ...y supplied in loose parts bag c Determine appropriate length then cut and connect tube Condensate Trap Field Drain Attachment Refer to Condensate Drain section for recommendations and procedures PLUG CAP COLLECTOR BOX DRAIN TUBE BLUE WHITE STRIPED INDUCER HOUSING MOLDED DRAIN TUBE VIOLET COLLECTOR BOX TUBE PINK COLLECTOR BOX DRAIN TUBE BLUE COLLECTOR BOX TUBE GREEN CONDENSATE TRAP A07281 Fig 8 Alt...

Page 11: ...densate trap casing holes with plastic filler caps factory supplied in loose parts bag CAP PLUG COLLECTOR BOX DRAIN TUBE BLUE WHITE STRIPED INDUCER HOUSING MOLDED DRAIN TUBE VIOLET COLLECTOR BOX TUBE PINK COLLECTOR BOX DRAIN TUBE BLUE COLLECTOR BOX TUBE EXTENSION CONDENSATE TRAP COLLECTOR BOX TUBE GREEN COLLECTOR BOX EXTENSION DRAIN TUBE DRAIN TUBE COUPLING A07277 Fig 10 Downflow Tube Configuratio...

Page 12: ... pressure tube pink label is factory connected to the pressure switch for use when furnace is installed in UPFLOW or HORIZONTAL LEFT applications The tube MUST be disconnected and used or the condensate trap relief port tube The other collector box pressure tube green label which was factory connected to the condensate trap relief port connection MUST be connected to the pressure switch in DOWNFLO...

Page 13: ...tion and Working Platform for Direct Vent 2 Pipe Application VENT MANUAL SHUTOFF GAS VALVE SEDIMENT TRAP CONDENSATE TRAP DRAIN ACCESS OPENING FOR TRAP 30 IN 762mm MIN WORK AREA A 12 IN 305mm MIN HORIZONTAL PIPE SECTION IS RECOMMENDED WITH SHORT 5 TO 8 FT 1 5 TO 2 4M VENT SYSTEMS TO REDUCE EXCESSIVE CONDENSATE DROPLETS FROM EXITING THE VENT PIPE A 3 IN 76mm MINIMUM CLEARANCE TO COMBUSTION AIR INTAK...

Page 14: ...sly con nected to condensate trap b Use inducer housing drain extension tube violet label and factory supplied in loose parts bag to connect LOWER inducer housing drain connec tion to condensate trap c Determine appropriate length cut and connect tube d Clamp tube to prevent any condensate leakage 3 Relief Port Tube a Extend collector box tube green label which was previ ously connected to condens...

Page 15: ... through casing hole and ro tating until tabs snap into locking position 5 Fill unused condensate trap casing holes with plastic filler caps factory supplied in loose parts bag UPFLOW OR DOWNFLOW HORIZONTAL FRONT FRONT LEVEL 0 TO 1 2 13mm MAX MIN 1 4 7mm TO 1 2 13mm MAX A02146 Fig 15 Proper Condensate Drainage Condensate Trap Tubing NOTE See Fig 14 or tube routing label on main furnace door to che...

Page 16: ...is to reduce excessive condensate droplets from exiting the vent pipe See Fig 12 13 or 44 LOCATION General This furnace must S be installed so the electrical components are protected from water S not be installed directly on any combustible material other than wood flooring refer to SAFETY CONSIDERATIONS S be located so combustion air and vent pipe maximum lengths are not exceeded Refer to Table 7...

Page 17: ...death Do not install furnace on its back See Fig 16 Safety control operation will be adversely affected Never connect return air ducts to back of furnace WARNING The furnace and its return air system shall be designed and installed so that negative pressure created by the air circulating fan cannot affect another appliance s combustion air supply or act to mix products of combustion with circulati...

Page 18: ...oil Box is used install as shown in Fig 21 NOTE Remove furnace perforated discharge duct flanges when they interfere with mating flanges on coil on downflow subbase To remove furnace perforated discharge duct flange use hand scanners wide duct pliers or duct flange tool to bend flange back and forth until it breaks off Be careful of sharp edges See Fig 22 UNIT MAY NOT OPERATE HAZARD Failure to fol...

Page 19: ...Furnace Plenum and Subbase Installed on a Combustible Floor FACTORY SUPPLIED CASED COIL OR COIL BOX FURNACE COMBUSTIBLE FLOORING SHEET METAL PLENUM FLOOR OPENING A07586 Fig 21 Furnace Plenum and Coil Assembly or Coil Box Installed on a Combustible Floor NO YES YES PERFORATED DISCHARGE DUCT FLANGE 210 DEG MIN A93029 Fig 22 Duct Flanges 355CAV ...

Page 20: ...o ensure proper drainage 3 For non direct vent 1 pipe application bottom side combustion air entry cannot be used when furnace is installed with hangers as shown A PREFERRED ROD LOCATION B ALTERNATE ROD LOCATION DRAIN 5 3 4 146mm 3 8 IN HEX NUT WASHER 4 REQD PER ROD VENT COMBUSTION AIR PIPE DIRECT VENT 2 PIPE APPLICATION ALL SIZES COMBUSTION AIR INTAKE NON DIRECT VENT 1 PIPE APPLICATION 3 IN MINIM...

Page 21: ...the space containing the furnace Secure ductwork with proper fasteners for type of ductwork used Seal supply and return duct connections to furnace with code approved tape or duct sealer Flexible connections should be used between ductwork and furnace to prevent transmission of vibration Ductwork passing through unconditioned space should be insulated to enhance system performance When air conditi...

Page 22: ...binet can be used with the factory supplied washable filter or a factory specified high efficiency disposable filter see cabinet instructions If installing the filter in the furnace blower compartment determine location for filter and relocate filter retaining wire if necessary See Table 2 to determine correct filter size for desired filter location Table 2 indicates filter size location and quant...

Page 23: ...istant to propane gas FIRE OR EXPLOSION HAZARD Failure to follow this warning could result in personal injury death or property damage Connect gas pipe to furnace using a backup wrench to avoid damaging gas controls Gas valve shutoff switch MUST be facing forward or tilted upward Never purge a gas line into a combustion chamber Never test for gas leaks with an open flame Use a commercially availab...

Page 24: ...4 Fig 27 Typical Gas Pipe Arrangement COMBUSTION AIR PIPE GROMMET GAS LINE GROMMET GAS LINE COMBUSTION AIR PIPE VENT PIPE VENT PIPE GROMMET UNUSED 1 3 4 IN 44 mm DIAMETER GAS CONN HOLE GAS LINE ENTRY HOLE FILLER PLUG NOTE PIPE GROMMETS AND ENTRY HOLE FILLER PLUGS ARE INCLUDED IN FACTORY SUPPLIED LOOSE PARTS BAG A05057 Fig 28 Casing Pipe Grommets 355CAV ...

Page 25: ...ce control No component operation can occur Do not bypass or close switch with panel removed WARNING UNIT MAY NOT OPERATE Failure to follow this caution may result in intermittent unit operation Furnace control must be grounded for proper operation or control will lock out Control is grounded through green yellow wire connected to gas valve and burner box screw WARNING 115 v Wiring Before proceedi...

Page 26: ... 96 14 30 9 1 15 080 20 060080 115 60 1 127 104 14 06 12 31 9 4 20 100 20 060100 115 60 1 127 104 14 06 12 31 9 4 20 120 20 060120 115 60 1 127 104 14 06 12 31 9 4 20 Permissible limits of voltage range at which unit will operate satisfactorily Unit ampacity 125 percent of largest operating component s full load amps plus 100 percent of all other potential operating components EAC humidifier etc f...

Page 27: ...ired use only a fuse of identical size 3 amp and type The furnace control will flash status code 24 when fuse needs replacement NOTE Use AWG No 18 color coded copper thermostat wire for lengths up to 100 ft 30 4M For wire lengths over 100 ft 30 4M use AWG No 16 wire NOTE For additional thermostat connection diagrams reference Fig 52 59 Accessories 1 Electronic Air Cleaner EAC The furnace control E...

Page 28: ...e space is well isolated from the living space or garage Materials Combustion air and vent pipe fittings primers and solvents must conform to American National Standards Institute ANSI standards and American Society for Testing and Materials ASTM standards See Table 5 for approved materials for use in the USA FIRE AND EXPLOSION HAZARD Failure to follow this warning could result in personal injury ...

Page 29: ... ment in a light uniform coat on inside of socket to prevent buildup of excess cement Apply second coat 8 While cement is still wet twist pipe into socket with 1 4 turn Be sure pipe is fully inserted into fitting socket 9 Wipe excess cement from joint A continuous bead of ce ment will be visible around perimeter of a properly made joint 10 Handle pipe joints carefully until cement sets 11 Horizont...

Page 30: ...AND COMM LED LIGHTS SW1 SETUP SWITCHES AND BLOWER OFF DELAY MODEL PLUG CONNECTOR AIR CONDITIONING A C AIRFLOW SETUP SWITCHES USER INTERFACE OR ADVANCED PRODUCT MONITOR CONNECTOR CONTINUOUS FAN CF AIRFLOW SETUP SWITCHES OAT CONNECTOR HUMIDIFIER TERMINAL 24 VAC 0 5 AMP MAX ACRDJ AIR CONDITIONING RELAY DISABLE JUMPER FLASH UPGRADE CONNECTOR FACTORY ONLY SW4 SETUP SWITCHES BOARD SERIAL NUMBER EXAMPLE ...

Page 31: ...31 12 inches 30 cm for applieances 10 000 Btuh 3 kW and 100 000 Btuh 30kW 36 inches 91cm for appliances 100 000 Btuh 30kW V V A08600 Fig 34 Direct Vent Termination Clearance 355CAV ...

Page 32: ...32 A08601 Fig 35 Ventilated Combustion Air Vent Termination Clearance 355CAV ...

Page 33: ...chever is greater typ A At least 36 in A Maintain 12 in 305mm min clearance above highest anticipated snow level Maximum of 24 in 614mm above roof 90 Note A denotes 0 to 2 in Between the first 2 vents Third vent must be 36 in away typ 914mm 305mm 914mm 305mm 305mm 914mm 914mm 457mm 51mm 914mm A05090 Fig 36 Combustion Air and Vent Termination for Direct Vent 2 pipe System Abandoned masonry used as ...

Page 34: ...re required COMBUSTION AIR PIPE General Furnace combustion air connection must be attached as shown in Fig 39 Combustion air intake housing plug may need to be relocated in some applications COMBUSTION AIR COMBUSTION AIR AIR FLOW VENT VENT VENT AIR FLOW AIR FLOW AIR FLOW UPFLOW DOWNFLOW HORIZONTAL LEFT DISCHARGE HORIZONTAL RIGHT DISCHARGE Select 1 vent pipe connection and 1 combustion air pipe con...

Page 35: ...UNIT CORROSION HAZARD Failure to follow this caution may result in reduced furnace component life Air for combustion must not be contaminated by halogen compounds which include fluoride chloride bromide and iodide These elements may corrode heat exchangers and shorten furnace life Air contaminants are found in aerosol sprays detergents bleaches cleaning solvents salts air fresheners and other hous...

Page 36: ...ans fireplace dampers and any other gas fired burning appliance to their previous conditions of use WARNING Combustion Air Termination Direct Vent 2 Pipe System Combustion air pipe must terminate outside the structure with the vent pipe as shown in Fig 36 Follow the clearance requirements shown in Fig 39 Refer to Vent Termination section for complete details on termination options VENT PIPE Genera...

Page 37: ...37 304 8mm minimum A06672 Fig 41 Attic Termination 304 8 mm minimum 76 2 mm minimum A06673 Fig 42 Crawlspace Termination 355CAV ...

Page 38: ...E COMBUSTION AIR PIPE VENT PIPE COMBUSTION AIR PIPE VENT PIPE COMBUSTION AIR PIPE VENT PIPE 12 MIN 12 MIN 12 MIN 304 8mm 12 MIN 304 8mm NOTE A 12 in 304 8mm minimum offset pipe section is recommended with short 5 to 8 ft 1 5 to 2 5M vent systems This recommendation is to reduce excessive condensate droplets 305mm 305mm A96230 Fig 44 Short Vent 5 to 8 ft 1 5M to 2 4M System 355CAV ...

Page 39: ...ructions in termination kit for the latest version Combustion air and vent pipes MUST terminate outside structure A factory accessory termination kit must be installed as shown in Table 8 There are four options of vent combustion air termination kits available as shown in Table 8 NOTE Combustion air pipe must have the same diameter as vent pipe Concentric Vent Combustion Air Termination Kit Direct...

Page 40: ...9 11 9 47 14 3 55 16 8 20 F 29 C 2 51 8 2 4 21 6 4 25 7 6 31 9 4 37 11 3 100 20 F 7 C 2 1 2 64 42 12 8 70 21 3 70 21 3 70 21 3 70 21 3 0 F 18 C 2 1 2 64 18 5 5 38 11 6 43 13 1 53 16 2 61 18 6 20 F 29 C 2 1 2 64 9 2 7 23 7 0 27 8 2 34 10 4 41 12 5 120 20 F 7 C 3 76 44 13 4 70 21 3 70 21 3 70 21 3 70 21 3 0 F 18 C 3 76 18 5 5 38 11 6 44 13 4 54 16 5 63 19 2 20 F 29 C 3 76 8 2 4 23 7 0 27 8 2 35 10 7...

Page 41: ...tric 1 1 2 38 42 12 8 37 11 2 32 9 8 27 8 2 22 6 7 17 5 2 2 51 70 21 3 70 21 3 70 21 3 70 21 3 70 21 3 70 21 3 80 000 2 Pipe or 2 In 51 Concentric 1 1 2 38 25 7 6 20 6 1 15 4 6 10 3 0 5 1 5 NA 2 51 70 21 3 70 21 3 70 21 3 70 21 3 70 21 3 70 21 3 100 000 2 Pipe or 2 In 51 Concentric 2 51 38 11 6 33 10 1 28 8 5 23 7 0 18 5 5 13 4 0 2 1 2 64 70 21 3 70 21 3 70 21 3 70 21 3 70 21 3 70 21 3 120 000 2 P...

Page 42: ... 1 NA NA NA 2 51 62 18 9 60 18 3 58 17 7 56 17 1 51 15 5 46 14 0 100 000 2 Pipe or 2 In 51 Concentric 2 51 27 8 2 22 6 7 17 5 2 12 3 7 7 2 1 NA 2 1 2 64 62 18 9 60 18 3 58 17 7 56 17 1 55 16 8 53 16 2 120 000 2 Pipe or 3 In 76 Concentric 3 76 one disk 43 13 1 41 12 5 39 11 9 37 11 3 35 10 7 34 10 4 ALTITUDE UNIT SIZE BTUH Termination Type Pipe Dia In mm NUMBER OF 90_ ELBOWS 1 2 3 4 5 6 9001 to 100...

Page 43: ...nsing furnace applications To avoid condensate spillage select a pump with an overflow switch Furnace condensate is mildly acidic typically in the pH range of 3 2 to 4 5 Due to corrosive nature of this condensate a condensate pH neutralizing filter may be desired Check with local authorities to determine if a pH neutralizer is required Application The furnace A C and humidifier drains may be combi...

Page 44: ...s in continuous fan mode or to select low cooling airflow for two speed cooling units This setup feature allows continuous fan airflow or low cooling airflow to be adjusted To set desired continuous fan airflow or low cooling airflow 1 Remove main furnace door and blower access panel 2 Locate CF setup switches on furnace control See Fig 33 3 Determine desired continuous fan airflow or low cooling ...

Page 45: ...ith Water UNIT OPERATION HAZARD Failure to follow this caution may result in intermittent unit operation or performance satisfaction Condensate trap must be PRIMED or proper draining may not occur The condensate trap has two internal chambers which can ONLY be primed by pouring water into the inducer drain side of condensate trap CAUTION A04001 Fig 48 Example of Setup Switch in Off Position 355CAV...

Page 46: ...46 A06677 Fig 49 Wiring Diagram 355CAV ...

Page 47: ...nt ON Turn ON to decrease Low Heat airflow 9 percent Medium Heat airflow 7 percent and High Heat airflow 15 percent for maximum comfort SW1 5 CFM per ton adjust OFF Turn ON for 400 CFM per ton Turn OFF for 350 CFM per ton SW1 6 Component Self Test OFF Turn ON to initiate Component Self Test for troubleshooting assistance when R thermostat lead is disconnected Turn OFF when Self Test is completed S...

Page 48: ... is interrupted the stored history is erased and the furnace control CPU will select medium heat for 1 minute low heat for 15 minutes and then switch to high heat as long as the thermostat continues to call for heat Subsequent selection is based on stored history of the thermostat cycle times The wall thermostat calls for heat closing the R to W circuit The furnace control CPU performs a self chec...

Page 49: ...alve solenoid GV HI is energized Switching from High to Medium or Low Heat The furnace control CPU will not switch from high heat to medium or low heat while the thermostat R to W cir cuit is closed when using a single stage thermostat 8 Blower Off Delay When the thermostat is satisfied the R to W circuit is opened de energizing the gas valve GV M stopping gas flow to the burners and de energiz in...

Page 50: ...arts the outdoor unit on low cooling speed and the R to G and Y1 circuits starts the furnace blower motor BLWM at low cooling airflow which is the true on board CF selection as shown in Fig 47 If the furnace control CPU switches from low cooling to high cooling the furnace control CPU will energize the air conditioning relay ACR When the air conditioning relay ACR is energized the R to Y1 and Y2 c...

Page 51: ...G circuit is opened the blower motor BLWM will continue operating for an additional 5 seconds if no other function requires blower motor BLWM operation Continuous Blower Speed Selection from Thermostat To select different continuous blower airflows from the room thermostat momentarily turn off the FAN switch or push button on the room thermostat for 1 3 seconds after the blower motor BLWM is opera...

Page 52: ...gle Speed Air Conditioning A06679 Fig 53 Step Modulating Furnace with Two Speed Air Conditioner A06680 Fig 54 Step Modulating Furnace with Single Speed Heat Pump Dual Fuel A06681 Fig 55 Step Modulating Furnace with Two Speed Heat Pump Dual Fuel 355CAV ...

Page 53: ...Fig 57 Dual Fuel thermostat with Step Modulating Furnace and Two Speed Heat Pump A06684 Fig 58 Two Stage Thermostat with Step Modulating Furnace and Two Speed Air Conditioner A06685 Fig 59 Single Stage Thermostat with Step Modulating Furnace and Two Speed Air Conditioner 355CAV ...

Page 54: ...as input rate on rating plate is for installations at altitudes up to 2000 ft 609 6M In the USA the input rating for altitudes above 2000 ft 609 6M must be reduced by 2 percent for each 1000 ft 304 8M above sea level In Canada the input rating must be derated by 5 percent for altitudes of 2000 ft 609 6M to 4500 ft 1371 6M above sea level Adjust manifold pressure to obtain input rate Furnace input ...

Page 55: ...W1 2 on control center to ON posi tion See Fig 33 NOTE DO NOT set low heat manifold pressure before setting medium heat manifold pressure DO NOT set low heat manifold pressure less than 5 in wc or more than 6 in wc for natural gas m When correct manifold pressures are obtained replace caps that conceal gas valve adjustment screws Main burner flame should be clear blue almost transparent See Fig 62...

Page 56: ...6 0 60 44 3 8 1 6 0 60 43 3 4 1 5 0 55 875 44 3 4 1 4 0 55 44 3 5 1 5 0 55 44 3 6 1 5 0 60 44 3 7 1 6 0 60 4000 900 44 3 2 1 3 0 50 44 3 3 1 4 0 55 44 3 4 1 4 0 55 44 3 5 1 5 0 55 1219 925 45 3 7 1 5 0 60 45 3 8 1 6 0 60 44 3 2 1 4 0 50 44 3 3 1 4 0 55 950 45 3 5 1 5 0 55 45 3 6 1 5 0 55 45 3 7 1 6 0 60 45 3 8 1 6 0 60 750 43 3 7 1 6 0 60 43 3 8 1 6 0 60 42 3 2 1 4 0 50 42 3 3 1 4 0 55 4001 775 43...

Page 57: ...60 45 3 7 1 6 0 60 44 3 2 1 4 0 50 825 45 3 3 1 4 0 55 45 3 4 1 4 0 55 45 3 5 1 5 0 55 45 3 6 1 5 0 60 625 43 3 8 1 6 0 60 42 3 2 1 4 0 50 42 3 3 1 4 0 55 42 3 4 1 5 0 55 8001 650 43 3 5 1 5 0 55 43 3 6 1 5 0 60 43 3 8 1 6 0 60 42 3 2 1 3 0 50 2439 675 44 3 7 1 6 0 60 43 3 4 1 4 0 55 43 3 5 1 5 0 55 43 3 6 1 5 0 60 700 44 3 5 1 5 0 55 44 3 6 1 5 0 60 44 3 7 1 6 0 60 44 3 8 1 6 0 60 725 44 3 2 1 4 ...

Page 58: ...rate n Remove jumper across R W W1 and W2 thermostat connections to terminate call for heat o Wait for blower off delay to finish then reset 115 v power to furnace p Wait for blower off delay to finish then reset 115 v power to furnace q Jumper R and W W1 thermostat connections on control to start furnace r Wait for the blower to turn ON then repeatitems ithrough l for low heat operation This sett...

Page 59: ...nges of temperature rise specified on the furnace rating plate Determine air temperature rise as follows 1 Place thermometers in return and supply ducts as near fur nace as possible Be sure thermometers do not see heat ex changer so that radiant heat does not affect readings This practice is particularly important with straight run ducts 2 When thermometer readings stabilize subtract return air te...

Page 60: ...ation By using this method to check the limit control it can be established that the limit is functioning properly and the furnace will operate safely if there is a restricted return air duct or motor failure If the limit control does not function during this test the cause must be determined and corrected Check Pressure Switches This control proves operation of the draft inducer Check switch oper...

Page 61: ...______ Sidewall ________________ Anticipator Setting Adjusted or ________________ Attic ________________ Cycle Rate 3 Cycles per Hr Selected ________________ Crawl Space Safety Controls Check Operation ________________ Termination Kit 2 Pipe or Concentric CHECKLIST START UP ________________ Combustion Air Pipe Length ________________ Gas Input Rate Set Within 2 percent of Rating Plate ____________...

Page 62: ...ge at any time specifications or designs without notice and without incurring obligations E2008 Bryant Heating Cooling Systems 7310 W Morris St Indianapolis IN 46231 Printed in U S A Edition Date 12 08 Replaces II355CAV 060 3 Catalog No II355CAV 060 4 355CAV ...

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