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912SC ALL

912SB 048080 SIZE ONLY

SINGLE STAGE 4--WAY MULTIPOISE

CONDENSING GAS FURNACE

Installation, Start--up, Operating and

Service and Maintenance Instructions

NOTE

: Read the entire instruction manual before starting the installation.

SECTIONS

SAFETY CONSIDERATIONS

. . . . . . . . . . . . . . . . . . . . . . . . .

INTRODUCTION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CODES AND STANDARDS

. . . . . . . . . . . . . . . . . . . . . . . . . . .

ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS

. . .

ACCESSORIES

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

LOCATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

AIR FOR COMBUSTION AND VENTILATION

. . . . . . . . . .

CONDENSATE TRAP

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CONDENSATE DRAIN

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

AIR DUCTS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

GAS PIPING

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ELECTRICAL CONNECTIONS

. . . . . . . . . . . . . . . . . . . . . . .

VENTING

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

START--UP, ADJUSTMENT, AND SAFETY CHECK

. . . . . .

SERVICE AND MAINTENANCE PROCEDURES

. . . . . . . .

SEQUENCE OF OPERATION

. . . . . . . . . . . . . . . . . . . . . . . .

PARTS REPLACEMENT GUIDE

. . . . . . . . . . . . . . . . . . . . . .

CERTIFIED

Use of the AHRI Certified

Mark indicates a

manufacturer’s participation in the program. For
verification of certification for individual products,
go to www.ahridirectory.org.

Portions of the text and tables are reprinted from current edition of

NFPA 54/ANSI Z223.1

, with permission of National Fire

Protection Association, Quincy, MA 02269 and American Gas

Association, Washington DC 20001. This reprinted material is not

the complete and official position of the NFPA or ANSI on the
referenced subject, which is represented only by the standard in its

entirety.

TABLES

Loose Parts Bag

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Minimum Clearances to Combustible Materials

. . . . . . . . . . . . .

Minimum Free Area Required

. . . . . . . . . . . . . . . . . . . . . . . . .

Minimum Space Volumes

. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Filter Size Information

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Opening Dimensions

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Air Delivery CFM

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maximum Capacity of Pipe

. . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical Data

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Vent Termination Kit for Direct Vent (2--Pipe) System

. . . . . . .

Hangar Spacing

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Combustion--Air Vent Pipe, Fitting & Cement Material..

. . . . .

Maximum Allowable Exposed Vent Lengths Insulation

. . . . . .

Maximum Equivalent Vent Length

. . . . . . . . . . . . . . . . . . . . . .

Deductions from Maximum Equivalent Vent Length

. . . . . . . .

Blower Off Delay Setup Switch

. . . . . . . . . . . . . . . . . . . . . . . .

Altitude Derate Multiplier for U.S.A.

. . . . . . . . . . . . . . . . . . . .

Gas Rate

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Orifice Size and Manifold Pressure

. . . . . . . . . . . . . . . . . . . . .

Содержание 912SB

Страница 1: ...ahridirectory org Portions of the text and tables are reprinted from current edition of NFPA 54 ANSI Z223 1E with permission of National Fire Protection Association Quincy MA 02269 and American Gas As...

Страница 2: ...aust 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...

Страница 3: ...ng on heating equipment observe precautions in literature on tags and on labels attached to or shipped with furnace and other safety precautions that may apply These instructions cover minimum require...

Страница 4: ...used if the heating load is 20 000 BTU or lower Use Air Conditioning Contractors of America Manual J and S American Society of Heating Refrigerating and Air Conditioning Engineers or other approved e...

Страница 5: ...recharge your body with static electricity firmly touch a clean unpainted metal surface of the furnace again before touching control or wires 5 Use this procedure for installed and uninstalled ungrou...

Страница 6: ...1 2 319 12 9 16 322 7 1 8 181 121 0 55 0 36060 125 0 56 8 36040 17 1 2 445 15 7 8 403 16 406 8 3 4 222 132 0 60 0 48060 142 0 64 5 48080 151 0 68 6 60080 21 533 19 3 8 492 19 1 2 495 10 1 2 267 158 5...

Страница 7: ...IS LOCATED TO THE LEFT OF THE BURNER SECTION AND CONDITIONED AIR IS DISCHARGED TO THE RIGHT A12181 Fig 2 Multipoise Orientations 60 80 27 C 16 C SUPPLY AIR SEE PRODUCT DATA FOR ACCESSORY CONDENSATE T...

Страница 8: ...ution system Refer to Air Ducts section S be provided ample space for servicing and cleaning Always comply with minimum fire protection clearances shown in Table 2 or on the furnace clearance to combu...

Страница 9: ...e combustion ventilation and dilution air must be provided in accordance with S U S A Installations Section 9 3 of the current edition of NFPA 54 ANSI Z223 1 Air for Combustion and Ventilation and app...

Страница 10: ...oms can be considered part of a space if a There are no closeable doors between rooms b Combining spaces on same floor level Each opening shall havefreeareaofat least1 in 2 1 000Btuh 2 000mm2 kW of th...

Страница 11: ...tical Ducts or Openings 60 000 40 000 100 000 divided by 3 000 33 3 Sq In for each Single Duct or Opening 80 000 30 000 110 000 divided by 2 000 55 0 Sq In for each two Horizontal Ducts Table 4 Minimu...

Страница 12: ...B C D D E F G L12F012 Fig 6 Air for Combustion Ventilation and Dilution for Outdoors Minimum opening size is 100 sq in 64516 sq mm with minimum dimensions of 3 in 76mm Minimum of 3 in 76mm when type...

Страница 13: ...g 10 and 11 A field supplied accessory Horizontal Installation Kit trap grommet is required for all direct vent horizontal installations only The kit contains a rubber casing grommet designed to seal...

Страница 14: ...n ports of the collector box Connect relief tube to port on collector box Rotate elbow to desired position and tighten clamp to 15 lb in Slide tube in stand offs to adjust length Connect the new press...

Страница 15: ...on Attach condensate trap with screw to collector box Slide relief tube in stand offs to adjust length Vent elbow shown in alternate orientation Tighten clamp on inlet to vent elbow 15 lb in Align tra...

Страница 16: ...osition and torque clamp on inlet 15 lb in Slide relief tube in stand offs to adjust length Attach condensate trap with screw to collector box Align trap over middle and right hand port on collector b...

Страница 17: ...e not hard piped together and b There is an air gap at the point where the two drain lines meet or c All condensate piping is at least 3 4 in PVC and there is a relief tee at the top of condensate dra...

Страница 18: ...in trap grommet is ONLY REQUIRED FOR DIRECT VENT APPLICATIONS It is NOT required for applications using single pipe or ventilated combustion air venting NOTICE TIP FROM CONTRACTORS When installing the...

Страница 19: ...e DIRECTION OF AIRFLOW Condensing Furnace Evaporator Coil Blower 3 4 PVC 1 2 3 4 1 2 CPVC or larger Positive pressure Pressure lower than areas with Negative pressure 3 4 PVC DIRECTION OF AIRFLOW 1 2...

Страница 20: ...sing Furnace Evaporator Coil Blower 3 4 PVC 3 4 1 2 CPVC or larger Positive pressure Pressure lower than areas with Negative pressure 3 4 PVC DIRECTION OF AIRFLOW 3 4 3 4 3 4 3 4 Open standpipe Option...

Страница 21: ...PIPE ORIENTATION FOR CONDENSATE DISCHARGE A170128 Fig 18 Drain Trap Connection and Routing Appearance may vary INSTALLATION Cabinet air leakage is less than 2 at 1 0 in W C Cabinet air leakage is less...

Страница 22: ...KC 1 Determine application being installed from Table 8 2 Construct hole in floor per Table 8 and Fig 21 3 Construct plenum to dimensions specified in Table 8 and Fig 21 4 Install special base coil as...

Страница 23: ...Bottom Return Air Inlet These furnaces are shipped with bottom closure panel installed in bottom return air opening Remove and discard this panel when bottom return air is used To remove bottom closur...

Страница 24: ...05 13 0 07 18 0 08 21 0 13 32 0 29 72 0 20 49 1000 472 0 06 16 0 11 28 0 11 28 0 17 43 0 27 67 1200 566 0 07 18 0 15 37 0 14 36 0 22 56 1400 661 0 08 21 0 19 48 0 18 45 0 28 70 1600 755 0 09 23 0 24...

Страница 25: ...E RETURN BOTTOM RETURN 14 3 16 360 16 x 25 x 3 4 406 x 635 x 19 14 x 25 x 3 4 356 x 635 x 19 Washable 17 1 2 445 16 x 25 x 3 4 406 x 635 x 19 16 x 25 x 3 4 406 x 635 x 19 Washable 21 533 16 x 25 x 3 4...

Страница 26: ...2 419 19 5 8 498 Downflow applications on combustible flooring KGASB sub base required 15 1 8 384 19 483 16 3 4 425 20 5 8 600 Downflow Applications on Combustible Flooring with CNPV CNRV CAR or CAP C...

Страница 27: ...CLOSURE Representative drawing only some models may vary in appearance A170123 Fig 23 Removing Bottom Closure Panel 2 Screws BOTTOM PLATE SCREWS 4 1 Lay furnace on the back or side 2 Remove the four 4...

Страница 28: ...L MIN 1 4 IN 6 MM TO 1 2 IN 13 MM MAX A11237 Fig 26 Furnace Pitch Requirements ANY COMBINATION OF 1 2 OR 3 PERMITTED A11036 Fig 27 Upflow Return Air Configurations and Restrictions A11037 Fig 28 Downf...

Страница 29: ...N OF 1 2 40 000 14 3 16 YES YES NO YES 17 1 2 YES YES NO YES 60 000 14 3 16 YES YES NO YES 17 1 2 YES NO NO YES 80 000 17 1 2 YES YES NO YES 21 YES YES NO YES 100 000 21 YES YES NO YES 120 000 24 1 2...

Страница 30: ...Installation 2 IN 51 mm COMBUSTION AIR PIPE SEE VENTING SECTION Install 12 x 22 204 x 559 mm sheet metal in front of and above the burner compartment area The sheet metal MUST extend above the furnac...

Страница 31: ...ections to furnace with code approved tape or duct sealer NOTE Flexible connections should be used between ductwork and furnace to prevent transmission of vibration Ductwork passing through unconditio...

Страница 32: ...1135 Orange 3 5 397 1485 1470 1455 1430 1390 1340 1280 1205 1120 1035 Blue 3 2 5 426 1120 1110 1100 1090 1065 1035 990 935 870 805 Red 3 2 0 433 940 920 910 890 865 830 790 745 690 625 048100 SIDE BOT...

Страница 33: ...e a new listed connector Do not use a connector which has previously served another gas appliance Black iron pipe shall be installed at the furnace gas control valve and extend a minimum of 2 in 51 mm...

Страница 34: ...y death or property damage Before servicing disconnect all electrical power to furnace When servicing controls label all wires prior to disconnection Reconnect wires correctly Verify proper operation...

Страница 35: ...ket and screws are shipped in the loose parts bag included with the furnace See Fig 36 for J Box mounting locations The J Box mounting bracket and green ground screw is used as a grounding point for a...

Страница 36: ...drill into blower shelf of furnace to route control wiring Route any control or accessory wiring to the blower compartment through external knockouts on the casing WARNING 24 V Wiring Make field 24 v...

Страница 37: ...36 11 0 15 60100 115 60 1 127 104 11 9 15 8 12 36 11 0 20 60120 115 60 1 127 104 11 9 15 8 12 36 11 0 20 Permissible limits of the voltage range at which the unit operates satisfactorily Unit ampacity...

Страница 38: ...NECT CONDENSING UNIT TWO WIRE FURNACE C O N T R O L R G COM W C R G Y GND GND FIELD 24 V WIRING FIELD 115 208 230 460 V WIRING FACTORY 24 V WIRING FACTORY 115 V WIRING 208 230 OR 460 V THREE PHASE 208...

Страница 39: ...EUTRAL CONNECTIONS COOL HEAT SPARE 1 SPARE 2 BLOWER SPEED SELECTION TERMINALS EAC 1 TERMINAL 115 VAC 1 0 AMP MAX 115 VAC L1 LINE VOLTAGE CONNECTION PL2 HOT SURFACE IGNITER INDUCER MOTOR CONNECTOR PL1...

Страница 40: ...used with this system must be UL listed material Acceptability under Canadian standard CAN CSA B149 is dependent upon full compliance with all installation instructions Under this standard it is recom...

Страница 41: ...for single pipe or ventilated combustion air option A furnace shall not be connected to a chimney flue serving a separate appliance designed to burn solid fuel Other gas appliances with their own ven...

Страница 42: ...e to the outdoors is not required for a single pipe vent system A 12 in 304 mm long pipe with a 2 in 51 mm tight radius 90 degree elbow is required to be attached to the combustion air pipe adapter on...

Страница 43: ...air pipe terminates in a well ventilated attic or crawl space Follow the clearances as shown in Fig 57 The combustion air pipe cannot terminate in attics or crawl spaces that use ventilation fans des...

Страница 44: ...vent length Include deductions from the Maximum Equivalent Vent Length MEVL contained in the Venting Tables for elbows and flexible vent pipe Factory accessory concentric vent terminations or pipe le...

Страница 45: ...e the vent elbow 1 Loosen the clamp on the inlet of the vent elbow attached to the inducer 2 Rotate the vent elbow to the required position There are rounded notches on the vent elbow to align it with...

Страница 46: ...e supported to prevent sagging Space combustion air piping and vent piping hangers as shown in Table 14 Support pipes using perforated metal hanging strap or commercially available hangers or straps d...

Страница 47: ...s shown in Fig 54 and all clearance shown in Fig 52 NOTE Follow the instructions of the vent terminal manufacturer These instructions are provided as a reference only Cut one 4 in 102 mm diameter hole...

Страница 48: ...lame sense lockout Table 15 Approved Combustion Air and Vent Pipe Fitting and Cement Materials U S A Installations MATERIALS USA 1 All pipe fittings primers and solvents must conform to American Natio...

Страница 49: ...gn Temp C Unit Size 40 000 BTUH 60 000 BTUH Uninsulated 3 8 in Insulation 1 2 in Insulation Uninsulated 3 8 in Insulation 1 2 in Insulation Pipe Dia mm 38 51 64 38 51 64 38 51 64 38 51 64 76 38 51 64...

Страница 50: ...pped in the loose parts bag or available through Replacement Components required under 10 ft 3 M TEVL in all orientations Required for installations from 0 2000 0 to 610 M above sea level Failure to u...

Страница 51: ...EVL 95 ft 29 M For 2 pipe from Table 17 Is TEVL less than MEVL YES Therefore 2 pipe MAY be used Example 2 A direct vent 60 000 BTUH furnace installed at 2100 ft 640M Venting system includes FOR EACH P...

Страница 52: ...THE INDUCER FOR USAGE SEE MAXIMUM EQUIVALENT VENT LENGTH TABLE 10FT 3 1 M OF VENT OR LESS ONLY A170006 Fig 42 Inducer Vent Elbow Avoid short horizontal offsets with 90 deg Elbows Short offsets can be...

Страница 53: ...items refer to the Inside Corner Clearance Table 3 ft 1 M to 6 ft 2 M Notes For this illustration Wall A is the wall adjacent to the wall the vent termination is located Wall B is the wall the vent t...

Страница 54: ...he vent termination within a horizontal distance of 2 ft 61 cm from the centerline of the vent termination 6 ft 2 M Clearance to a ventilation exhaust including HRV ERV on either Wall A or Wall B 12 i...

Страница 55: ...combustion air connection UPFLOW VERTICAL VENT A11310A Fig 46 Upflow Configurations Appearance may vary See Notes for Venting Options 1 2 3 4 5 6 7 5 Rotate vent elbow to required position DOWNFLOW L...

Страница 56: ...T RIGHT VENT CONFIGURATION A11329A Fig 48 Horizontal Left Appearance may vary See Notes for Venting Options ALTERNATE COMBUSTION AIR CONNECTIONS HORIZONTAL RIGHT VERTICAL VENT CONFIGURATION A11337 Req...

Страница 57: ...VENT PIPE FLUSH SHOWING COUPLING VENT PIPE FLUSH WITH ADAPTER VENT PIPE ADAPTER WITH GASKET INSTALLED ON FURNACE VENT PIPE IS CUT FLUSH WITH TOP OF ADAPTER PRIME AND CEMENT VENT PIPE TO ADAPTER ALLOW...

Страница 58: ...a minimum of two sides beneath the floor See Note 4 Manufacturer s Recommendation See Notes 3 8 M Clearance to each side of the centerline extended above or below vent terminal of the furnace to a dr...

Страница 59: ...y open on a minimum of two sides beneath the floor See Note 4 Manufacturer s Recommendation See Notes 3 8 M Clearance to each side of the centerline extended above or below vent terminal of the furnac...

Страница 60: ...termination with 2 elbows preferred 12 in min 305 mm from overhang or roof Maintain 12 in 305mm minimum clearance above highest anticipated snow level or grade whichever is greater 6 in 152mm minimum...

Страница 61: ...305 MM CLEARANCE ABOVE HIGHEST ANTICIPATED SNOW LEVEL OR GRADE WHICHEVER IS GREATER COMBUSTION AIR ELBOW PARALLEL TO WALL OVERHANG 12 IN 305 MM MIN GROUND LEVEL OR ANTICIPATED SNOW LEVEL EXHAUST CLEA...

Страница 62: ...ipe hangar Ventilated Combustion Air intake termination in crawl space Ventilated Combustion Air intake pipe CRAWL SPACE ATTIC highest level of insulation A10497 Fig 57 Vent Terminations for Ventilate...

Страница 63: ...some models may vary in appearance TO CODE APPROVED DRAIN OR CONDENSATE PUMP Tee Dry Well Cap water tight and removable Tee Dry Well Cap water tight and removable Tee Dry Well Cap water tight and rem...

Страница 64: ...r operates HUM 24vac terminal is only energized when the draft inducer is energized in heating Prime Condensate Trap with Water CARBON MONOXIDE POISONING HAZARD Failure to follow these warnings could...

Страница 65: ...e the factory orifice to a different orifice Tables have been provided in the furnace installation instructions to match the required orifice to the manifold pressure to the heat content and specific...

Страница 66: ...If clocked rate does not match required input from Step 1 increase manifold pressure to increase input or decrease manifold pressure to decrease input Re peat steps b through e of Step 1 until correc...

Страница 67: ...on thermostat per thermostat instruc tions and install on subbase or wall 5 Install blower access door Electronic thermostat Set cycle rate for 3 cycles per hr Check Safety Controls The flame sensor g...

Страница 68: ...drawing only some models may vary in appearance A11153 Fig 60 Gas Valve without Tower Pressure Ports ON OFF SWITCH 1 8 NPT INLET PRESSURE TAP REGULATOR SEAL CAP REGULATOR ADJ UNDER CAP 1 2 NPT OUTLET...

Страница 69: ...69 338309 201 Rev E A11602 Fig 64 Service Label Information 912S...

Страница 70: ...23 157 313 783 66 54 109 273 24 150 300 750 68 53 106 265 25 144 288 720 70 51 103 257 26 138 277 692 72 50 100 250 27 133 267 667 74 48 97 243 28 129 257 643 76 47 95 237 29 124 248 621 78 46 92 231...

Страница 71: ...3 3 7 43 3 8 42 3 2 850 44 3 8 43 3 5 43 3 6 43 3 7 875 44 3 6 44 3 7 43 3 4 43 3 5 4000 900 44 3 4 44 3 5 44 3 7 44 3 8 1219 925 44 3 2 44 3 4 44 3 5 44 3 6 950 44 3 1 44 3 2 44 3 3 44 3 4 750 42 3 3...

Страница 72: ...2 3 2 725 44 3 8 43 3 4 43 3 5 43 3 6 750 44 3 5 44 3 7 44 3 8 43 3 4 8000 775 44 3 3 44 3 4 44 3 5 44 3 7 2438 800 44 3 1 44 3 2 44 3 3 44 3 4 825 44 2 9 44 3 0 44 3 1 44 3 2 625 42 3 4 42 3 5 42 3 6...

Страница 73: ...he maximum make point of the switch is 0 83 in W C ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death There may be more than one electrical supply to the f...

Страница 74: ...erify that there is nothing plugged into the PLT connector Note If there is a jumper connector plugged into PLT remove it and discard See Fig 40 3 Verify that the Blower Heat Off Delay jumpers are set...

Страница 75: ...abinet 7 Replace filter cabinet door 8 Turn on electrical supply to furnace Blower Motor and Wheel Maintenance To ensure long life economy and high efficiency clean accumulated dirt and grease from bl...

Страница 76: ...or damaging the mounting to the burner assembly ELECTRICAL SHOCK AND FIRE HAZARD Failure to follow this warning could result in personal injury death and or property damage Turn off the gas and electr...

Страница 77: ...ontrol door Flushing Collector Box and Drainage System ELECTRICAL SHOCK AND FIRE HAZARD Failure to follow this warning could result in personal injury death and or property damage Turn off the gas and...

Страница 78: ...intricate design A build up of soot and carbon indicates that a problem exists which needs to be corrected such as improper adjustment of manifold pressure insufficient or poor quality combustion air...

Страница 79: ...MAGE HAZARD Failure to follow this caution may result in damage to the furnace and other property damage Do not use ethylene glycol automotive antifreeze coolant or equivalent Failure of plastic compo...

Страница 80: ...GROMMET SCREW LOCATION BLOWER HSG ASSY BRACKET BRACKET ENGAGEMENT SEE DETAIL A CAPACITOR OR POWER CHOKE WHEN USED BRACKET SCREW GND BLOWER HSG ASSY MOTOR BLOWER WHEEL BLOWER CUTOFF BLOWER DETAIL A A11...

Страница 81: ...y If the burner flame is proven the blower motor is energized on HEAT speed 25 sec after the gas valve GV is energized Simultaneously the electronic air cleaner terminal EAC 1 is energized and remains...

Страница 82: ...ious fault or status code 11 1 short and 1 long flash if there was no previous fault After the control repeats the code 4 times the control will go through a brief component test sequence The inducer...

Страница 83: ...sequence 3 more times before lockout 14 occurs If flame signal is lost during the blower on delay period blower will come on for the selected blower off delay Check the following items first before pr...

Страница 84: ...84 A12420 Fig 73 Wiring Diagram 912S...

Страница 85: ...g by brand name or contact BRYANT HEATING COOLING SYSTEMS Consumer Relations Department P O Box 4952 Syracuse New York 13221 4952 1 800 428 4326 Have available the model number series number and seria...

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