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315A
Variable Speed
Induced---Combustion Deluxe
4---Way Multipoise Furnace
Installation Start- -up, Operating, and
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Bottom Return Air Inlet
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Service and Maintenance,
Instructions Series 120/C
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NOTE: Read the entire instruction manual before starting the
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installation.
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Portions of the text and tables are reprinted from NFPA 54/ANSI
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Z223.1- -2006E, with permission of National Fire Protection
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Association, Quincy, MA 02269 and American Gas Association,
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ISO 9001:2000
CERTIFIED
REGISTERED
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Summary of Contents for Bryant 120/C Series
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Page 1: Table Of Contents
315A Variable Speed Induced---Combustion Deluxe 4---Way Multipoise Furnace Installation Start- -up, Operating, and Service and Maintenance, Instructions Series 120/C SAFETY CONSIDERATIONS ......Check Safety Controls . -
Page 2: Safety Considerations
SAFETY CONSIDERATIONS DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies a hazard which could result in personal injury or death. CAUTION is used to identify hazards which may result in minor personal injury or WARNING product and property damage. - Page 3 INSTALLATION MINIMUM INCHES CLEARANCE TO COMBUSTIBLE CONSTRUCTION DISTANCE MINIMALE EN POUCES AUX CONSTRUCTIONS COMBUSTIBLES This forced air furnace is equipped for use with This furnace is approved for UPFLOW, DOWNFLOW, and HORIZONTAL installations. natural gas at altitudes 0-10,000 ft (0-3,050m). accessory kit, supplied...
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Page 4: Introduction
INTRODUCTION Street, N.W., Washington, DC 20001 (www.AGA.org.) The Series 120/C 4.way multipoise Category I fan- -assisted CANADA: CAN/CSA- -B149.1- -05. For a copy, furnace is CSA (formerly A.G.A. and C.G.A.) design- -certified. A contact Standard Sales, CSA International, 178 Category I fan- -assisted furnace is an appliance equipped with an Rexdale Boulevard, Etobicoke (Toronto), Ontario, integral mechanical means to either draw or force products of M9W 1R3 Canada... -
Page 5: Location
a person’s hand during grounding will be satisfactorily DO NOT move or shuffle your feet, do not touch discharged. ungrounded objects, etc.). 3. After touching the chassis, you may proceed to service the 4. If you touch ungrounded objects (and recharge your body control or connecting wires as long as you do nothing to with static electricity), firmly touch a clean, unpainted recharge your body with static electricity (for example;... - Page 6 level. Obtain high- -altitude conversion kit from your area be installed so the electrical components are protected authorized distributor. from water. This furnace must: THE BLOWER IS LOCATED BELOW THE BURNER SECTION, AND CONDITIONED AIR IS DISCHARGED UPWARD. THE BLOWER IS LOCATED TO THE RIGHT OF THE BURNER SECTION, AND AIR CONDITIONED AIR IS...
- Page 7 CAUTION WARNING FIRE, INJURY OR DEATH HAZARD PERSONAL INJURY AND/OR PROPERTY DAMAGE HAZARD Failure to follow this warning could result in personal injury, death and/or property damage. Improper use or installation of this furnace may result in premature furnace component failure. This gas furnace may When the furnace is installed in a residential garage, the be used for heating buildings under construction provided burners and ignition sources must be located at least 18 in.
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Page 8: Air For Combustion And Ventilation
Table 2 – Minimum Free Area Required for Each Combustion Air opening of Duct to Outdoors FUR- TWO HORIZONTAL DUCTS SINGLE DUCT OR OPENING TWO OPENINGS OR VERTICAL DUCTS NACE (1 SQ. IN./2,000 BTUH) (1,100 SQ. MM/KW) (1 SQ. IN./3,000 BTUH) (734 SQ. MM/KW) (1 SQ. -
Page 9: The Standard Method
1 SQ IN. PER 4000 DUCTS BTUH* CIRCULATING AIR OUTDOORS VENT THROUGH ROOF DUCTS 12″ MAX 12″ 1 SQ IN. VENT PER 2000 12" MAX THROUGH BTUH* ROOF 1 SQ IN. 1 SQ IN. PER 1000 4000 BTUH* IN DOOR BTUH* OR WALL DUCTS... -
Page 10: Combination Of Indoor And Outdoor Air
c. Combining space on different floor levels. The WARNING volumes of spaces on different floor levels shall be considered as communicating spaces if connected by one or more permanent openings in doors or floors CARBON MONOXIDE POISONING HAZARD having free area of at least 2 in.2/1,000 Btuh (4,400 Failure to follow this warning could result in personal mm2/kW) of total input rating of all gas appliances. -
Page 11: Leveling Legs (If Desired)
⁄ ″ ⁄ ″ ⁄ ″ ⁄ ″ ⁄ ″ A02098 Fig. 9 - - Removing Bottom Closure Panel ⁄ ″ NOTE: Side return- -air openings can be used in UPFLOW and ⁄ ″ most HORIZONTAL configurations. Do not use side return- -air ⁄... -
Page 12: Roll- -Out Protection
not pull away from the furnace sides, so that the strap attachment screws are not in tension (are loaded in shear) for reliable support. FURNACE (OR COIL CASING Platform Furnace Support WHEN USED) Construct working platform at location where all required furnace clearances are met. -
Page 13: General Requirements
Table 4 – Opening Dimensions (In.) FURNACE PLENUM OPENING FLOOR OPENING CASING APPLICATION WIDTH Upflow Applications on Combustible or Noncombustible Floor- 12--- 11/16 21--- 5/8 13--- 5/16 22--- 1/4 ing (KGASB subbase not required) Downflow Applications on Noncombustible Flooring (KGASB 12--- 9/16 13--- 3/16 19--- 5/8... - Page 14 Supply Air Connections The supply- -air duct must be connected to ONLY the furnace supply- -outlet- -air duct flanges or air conditioning coil casing For a furnace not equipped with a cooling coil, the outlet duct (when used). DO NOT cut main furnace casing side to attach shall be provided with a removable access panel.
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Page 15: Downflow Furnaces
METHOD 2 USE (42) #8 x 3/4 SHEET METAL SCREWS TYPICAL FOR EACH STRAPS.THE STRAPS SHOULD BE VERTICAL AGAINST THE FURNACE SIDES AND NOT PULL AWAY FROM THE FURNACE SIDES. METHOD 1 FOLD ALL STRAPS UNDER FURNACE AND SECURE WTH (42) #8 x 3/4 SHEET METAL SCREWS (2 SCREWS IN SIDE AND 2 SCREWS IN BOTTOM). - Page 16 A02075 Fig. 18 - - Upflow Return Air Configurations and Restrictions A02163 Fig. 19 - - Downflow Return Air Configurations and Restrictions...
- Page 17 A02162 Fig. 20 - - Horizontal Return Air Configurations and Restrictions...
- Page 18 Table 5 – Air Delivery - - CFM (With Filter)* 070-12/036070 090-16/048090 110-20/060110 136-22/066135 155-22/066155 A04016...
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Page 19: Return Air Connections
Return Air Connections Installations must be made in accordance with all authorities having jurisdiction. If possible, the gas supply line should be a WARNING separate line running directly from meter to furnace. NOTE: In the state of Massachusetts: 1. Gas supply connections MUST be performed by a FIRE HAZARD licensed plumber or gas fitter. - Page 20 A 1/8- -in. NPT plugged tapping, accessible for test gauge connection, MUST be installed immediately upstream of gas SUPPLY supply connection to furnace and downstream of manual MANUAL equipment shutoff valve. SHUTOFF Piping should be pressure and leak tested in accordance with VALVE (REQUIRED NFGC in the United States or CAN/CSA- -B149.1- -05 in Canada,...
- Page 21 115- -V WIRING WARNING Verify that the voltage, frequency, and phase correspond to that specified on unit rating plate. Also, check to be sure that service FIRE HAZARD provided by utility is sufficient to handle load imposed by this equipment. Refer to rating plate or Table 7 for equipment Failure to follow this warning could result in personal electrical specifications.
- Page 22 A02099 Fig. 24 - - Relocating J- -Box WARNING FIRE OR ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal A03221 Fig. 25 - - Field- -Supplied Electrical Box on Furnace Casing injury, death, or property damage. If field- -supplied manual disconnect switch is to be mounted POWER CORD INSTALLATION IN FURNACE J- -BOX on furnace casing side, select a location where a drill or...
- Page 23 ACCESSORIES NOTE: DO NOT connect furnace control HUM terminal to HUM (humidifier) terminal on Thermidistat, Zone Controller or 1. Electronic Air Cleaner (EAC) similar device. See ThermidistatE, Zone Controller, thermostat, Connect an accessory Electronic Air Cleaner (if used) or controller manufacturer’s instructions for proper connection. using 1/4- -in female quick connect terminals to the two male 1/4- -in quick- -connect terminals on the control board VENTING...
- Page 24 115 VAC Output to HSI & Inducer ECM Motor harness Connector 115 VAC Input Transformer Primary & 120 Future Use VAC to ECM Motor 115 VAC EAC Input (1.0 AMP MAX) 24 VAC Hum Output (0.5 AMP MAX) ACRDJ Jumper 12 Pin Inline Connector A B C D...
- Page 25 WARNING CARBON MONOXIDE POISONING HAZARD Failure to follow the steps outlined below for each appliance connected to the venting system being placed into operation could result in carbon monoxide poisoning or death. The following steps shall be followed for each appliance connected to the venting system being placed into operation, while all other appliances connected to the venting system are not in operation:...
- Page 26 See notes 2, 5, 8, 10, 11 and 12 on the page following these figures See notes 1, 2, 3, 4, 6, 8, 9, 10, 12, 13 and 15 on the page following these figures A03179 A03178 Fig. 29 - - Two- -Stage Furnace with Two- -Speed Air Condi- Fig.
- Page 27 See notes 2, 11, and 12 on the page following these figures See notes 1, 2, 3, 4, 12, 13, 14, 15, and 17 on the page following these figures A03182 A03183 Fig. 33 - - Dual- -Fuel Thermostat with Two- -Stage Furnace Fig.
- Page 28 NOTES FOR FIGURES 28- -35 1. Heat pump MUST have a high pressure switch for dual fuel applications. 2. Refer to outdoor equipment Installation Instructions for additional information and setup procedure. 3. If the heat pump date code is 1501E or earlier, select the “ZONE” position on the two- -speed heat pump control. Heat pumps having date codes 1601E and later do not have or require a “ZONE”...
- Page 29 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. Crown Rebuild condition: crown.
- Page 30 MASONRY CHIMNEY REQUIREMENTS If a metal liner or Type- -B vent is used to line a chimney, no other appliance shall be vented into the annular space between the NOTE: These furnaces are CSA design- -certified for use in chimney and the metal liner. exterior tile- -lined masonry chimneys with a factory accessory Exterior Masonry Chimney FAN + NAT Chimney Adapter Kit.
- Page 31 Table B—Minimum Allowable Input Rating of NOTE: Vent connector length for connector sizing starts at Space- -Heating Appliance in furnace vent elbow. The 4- -inch vent elbow is shipped for upflow Thousands of Btuh per Hour configuration and may be rotated for other positions. Remove the three screws that secure vent elbow to furnace, rotate furnace vent VENT HEIGHT INTERNAL AREA OF CHIMNEY (SQ.
- Page 32 SEE NOTES: 1,2,4,7,8,9 SEE NOTES:1,2,3,4,5,7,8,9 on the page following on the page following these figures these figures A03208 A03210 Fig. 37 - - Upflow Application - - Vent Elbow Up Fig. 39 - - Downflow Application - - Vent Elbow Up then Left SEE NOTES: 1,2,4,5,7,8,9 SEE NOTES: 1,2,3,4,7,8,9 on the page following...
- Page 33 SEE NOTES: 1,2,4,7,8,9 on the page following these figures A03213 Fig. 43 - - Horizontal Left Application - - Vent Elbow Left SEE NOTES: 1,2,4,5,6,7,8,9,10 on the page following these figures A03207 Fig. 41 - - Downflow Application - - Vent Elbow Left then Up SEE NOTES: 1,2,4,5,7,8,9 on the page following these figures A03214...
- Page 34 SEE NOTES: 1,2,4,5,7,8,9 on the page SEE NOTES: 1,2,4,5,7,8,9 on the page following these figures following these figures A03215 A03219 Fig. 46 - - Horizontal Left Application - - Vent Elbow Up Fig. 48 - - Horizontal Right Application - - Vent Elbow Left then Up SEE NOTES: 1,2,4,5,7,8,9 SEE NOTES: 1,2,4,5,7,8,9 on the page...
- Page 35 Venting Notes for Fig. 37- -49 1. For common vent, vent connector sizing and vent material: United States- -- -use the NFGC Canada- -- -use the CAN/CSA- -B149.1- -05 2. Immediately increase to 5- -inch or 6- -inch vent connector outside furnace casing when 5- -inch vent connector is required, refer to Note 1 above.
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Page 36: Start- -Up, Adjustment, And Safety Check
The horizontal portion of the venting system shall slope upwards 1. Maintain 115- -v wiring and ground. Improper polarity will not less than 1/4- -in. per linear ft. (21 mm/m) from the furnace to result in rapid flashing LED and no furnace operation. the vent and shall be rigidly supported every 5 ft. - Page 37 A04128 A04130 Fig. 51 - - Rounded End of Knockout Fig. 53 - - Hammer and Screwdriver Used for Knockout A04129 A04131 Fig. 52 - - Knockout Pulled Loose Fig. 54 - - Remove Knockout with Hammer...
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Page 38: Start- -Up Procedures
THERMOSTAT SUBBASE TERMINALS WITH THERMOSTAT REMOVED (ANITICIPATOR, CLOCK, ETC., MUST BE OUT OF CIRCUIT.) HOOK-AROUND AMMETER R Y W G 10 TURNS FROM UNIT 24-V CONTROL TERMINALS 0.5 AMPS FOR THERMOSTAT 5.0 AMPS ON AMMETER EXAMPLE: ANTICIPATOR SETTING 10 TURNS AROUND JAWS A06667 A96316 Fig. -
Page 39: Adjustments
1. Purge gas lines after all connections have been made. CAUTION 2. Check gas lines for leaks. 3. To Begin Component Self- -Test: FURNACE DAMAGE HAZARD Remove Blower Access Door. Disconnect the thermostat R lead from furnace control board. Manually close blower Failure to follow this caution may result in reduced furnace door switch. - Page 40 Table 8 – Furnace Setup Switch Description SETUP SWITCH NORMAL SWITCH NAME DESCRIPTION OF USE POSITION Status Code Recov- Turn ON to retrieve up to 7 stored status codes for troubleshooting SW1--- 1 assistance when R thermostat lead is disconnected. Allows 2--- stage operation with a single stage thermostat.
- Page 41 Table 9 – Blower Off Delay Setup Switch low- -heat input is achieved. Re- -install lowheat regulator seal cap on gas valve. DESIRED HEATING MODE SETUP SWITCH (SW --- 7 AND 4. Set low heat temperature rise. The furnace must operate --- 8) POSITION BLOWER OFF DELAY (SEC.) within the temperature rise ranges specified on the furnace...
- Page 42 AC RD J PRINTED C IRC IUT BO ARD TRAN PL12 1 2 3 OF F 1 2 3 OF F 1 2 3 OF F 1 2 3 OF F 1 2 3 OF F 1 2 3 OF F 1 2 3 OF F 1 2 3...
- Page 43 must operate within the temperature rise ranges specified CAUTION on the furnace rating plate. Determine the air temperature rise as follows: FURNACE DAMAGE HAZARD NOTE: Blower access door must be installed when taking Failure to follow this caution may result in shorten furnace temperature rise reading.
- Page 44 (6.) Turn SW1- -2 switch OFF. CAUTION (7.) Install blower access door. b. Electronic thermostat: Set cycle rate for 3 cycles per FURNACE OVERHEATING HAZARD Failure to follow this caution may result in reduced furnace 10. Set Airflow for Air Conditioning - -Single Stage and High life.
- Page 45 Table 10 – Gas Rate (CU ft./hr) SECONDS G SIZE OF TEST DIAL SECONDS SIZE OF TEST DIAL 1 Cu Ft. 2 Cu Ft. 5 Cu Ft. 1 Cu Ft. 2 Cu Ft. 5 Cu Ft. FOR 1 REVOLUTION FOR 1 REVOLUTION 1800 1636 1500...
- Page 46 Table 11 – Orifice Size and Manifold Pressure for Gas Input Rate (Tabulated Data Based on 22,000 Btuh High- -Heat/14,500 Btuh for Low- -Heat per Burner, Derated 4 Percent for Each 1000 Ft... Above Sea Level) SPECIFIC GRAVITY OF NATURAL GAS AVG..
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Page 47: Check Safety Controls
Table 11 - - Orifice Size and Manifold Pressure for Gas Input Rate (CONT.) (Tabulated Data Based on 22,000 Btuh High- -Heat/14,500 Btuh for Low- -Heat per Burner, Derated 4 Percent for Each 1000 Ft.. Above Sea Level) AVG. GAS SPECIFIC GRAVITY OF NATURAL GAS ALTITUDE HEAT VALUE... -
Page 48: Checklist
NOTE: Should switch remain open longer than 3 minutes, furnace control board will lockout the furnace for 3 hours. To reset furnace control board, turn thermostat below room temperature or from HEAT to OFF and turn 115- -v power OFF, then back ON. - Page 49 Table 12 – Orifice Size and Manifold Pressure for Gas Input Rate (Tabulated Data Based on 21,000 Btuh High- -Heat/14,500 Btuh for Low- -Heat Per Burner, Derated 4 Percent for Each 1000 Ft... Above Sea level) SPECIFIC GRAVITY OF NATURAL GAS AVG.
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Page 50: Introduction
Table 12 - - Orifice Size and Manifold Pressure for Gas Input Rate (CONT.) (Tabulated Data Based on 21,000 Btuh High- -Heat/14,500 Btuh for Low- -Heat Per Burner, Derated 4 Percent for Each 1000 Ft. Above Sea level) AVG. GAS SPECIFIC GRAVITY OF NATURAL GAS HEAT VALUE ALTITUDE RANGE... - Page 51 the furnace, and conditioned air is discharged upward. Since this NOTE: The Status Codes cannot be retrieved by disconnecting furnace can be installed in any of the 4 positions shown in Fig. 4, the limit switch or draft safeguard switch. To retrieve Status you must revise your orientation to component location Codes, follow the procedure below.
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Page 52: Care And Maintenance
7. RELEASE BLOWER ACCESS DOOR SWITCH, 1. Check and clean air filter each month or more frequently if reattach wire to “R” terminal on furnace control board, required. Replace if torn. replace blower access door, and replace outer access door. 2. - Page 53 BLOWER MOTOR AND WHEEL e. Remove blower wheel from housing. f. Clean wheel and housing. WARNING 12. Reassemble motor and blower by reversing steps 11e, through 11a. Be sure to reattach ground wire to the blower housing. ELECTRICAL SHOCK HAZARD 13.
- Page 54 problem exists which needs to be corrected, such as improper adjustment of manifold pressure, insufficient or poor quality combustion air, incorrect size or damaged manifold orifice(s), 1-7/8” improper gas, or a restricted heat exchanger. Action must be taken to correct the problem. If it becomes necessary to clean the heat exchangers because of dust or corrosion, proceed as follows: 1.
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Page 55: Sequence Of Operation
A releasing agent such as cooking spray or equivalent the LED will be ON continuous, as long as no faults are detected. (must not contain corn or canola oil, aromatic or After the 90- -second period, the furnace will respond to the halogenated hydrocarbons or inadequate seal may occur) thermostat normally. - Page 56 Cooling Tonnage vs. Airflow (CFM) AIR CONDITIONING AIRFLOW 070 MODEL 090 MODEL 110, 135, TONS (12,000 BTU/HR) (CFM) & 155 MODELS 1-1/2 2-1/2 1050 3-1/2 1225 1400 1750 2100 X-INDICATES AN ALLOWABLE SELECTION. AIR CONDITIONING (A/C) OR CONTINUOUS-FAN (CF) AIRFLOW SELECTION CHART BASED ON 350 CFM/TON SW1-5 OFF SWITCH SW3 POSITIONS...
- Page 57 follows: energized to open the NC contact and de- -energize the Low- -heat - - 45 seconds after the gas valve GV- -M is high- -heat gas valve solenoid GV- -HI.When the opened the blower motor BLWM is turned ON at inducer motor IDM reduces pressure sufficiently, the low- -heat airflow.
- Page 58 the furnace blower motor BLWM transitions to run at furnace control is in the Thermidistat mode and there is a demand for dehumidification. The cooling operation high- -cooling airflow. described in item 3. above also applies to operation with a The electronic air cleaner terminal EAC- -1 is energized with 115 Thermidistat.
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Page 59: Wiring Diagram
CPU will shift the continuous- -blower airflow from the NOTE: To repeat component test, turn setup switch SW1- -6 to factory setting to the next highest CF selection airflow as OFF and then back ON. shown in Fig. 63. Momentarily turning off the FAN switch Wiring Diagram again at the thermostat will shift the continuous- -blower Refer to wiring diagram Fig. - Page 64 Catalog No. II315A ---70---7 E2007 Bryant Heating & Cooling Systems 7310 W. Morris St. Indianapolis, IN 46231 Printed in U.S.A. Edition Date: 02/07 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
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