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REGISTERED QUALITY SYSTEM
NOTE: Read the entire instruction manual before starting the
installation.
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TABLE OF CONTENTS

SAFETY CONSIDERATIONS .....................................................2
INTRODUCTION ..........................................................................2
CODES AND STANDARDS........................................................4
APPLICATIONS............................................................................5
General ......................................................................................5
Upflow Applications.................................................................5
Orientation) ..........................................................................5
Orientation) ..........................................................................6
Orientation) ..........................................................................6
Orientation) ..........................................................................7
Condensate Trap Field Drain Attachment ..........................7
Pressure Switch Tubing.......................................................7
Connections..........................................................................7
installation, start-up,
and operating instructions
DELUXE 4-WAY MULTIPOISE
FIXED-CAPACITY DIRECT-VENT
CONDENSING GAS FURNACE
A93040
EFFICIENCY
RATING
CERTIFIED
CERTIFIED
®
Cancels: II 350M-40-12
Condensate Trap Freeze Protection ....................................7
Downflow Applications ............................................................7
Condensate Trap Location ..................................................7
Condensate Trap Tubing .....................................................7
Condensate Trap Field Drain Attachment ..........................8
Pressure Switch Tubing.......................................................8
Condensate Trap Freeze Protection ....................................8
Applications ..............................................................................8
Condensate Trap Location ..................................................9
Condensate Trap Tubing .....................................................9
Condensate Trap Field Drain Attachments ........................9
Pressure Switch Tubing.....................................................10
Condensate Trap Freeze Protection ..................................10
Construct a Working Platform ..........................................10
Condensate Trap Location ................................................11
Condensate Trap Tubing ...................................................11
Condensate Trap Field Drain Attachment ........................11
Pressure Switch Tubing.....................................................11
Condensate Trap Freeze Protection ..................................12
Construct a Working Platform ..........................................12
LOCATION..................................................................................12
General ....................................................................................12
Hazardous Locations...............................................................13
INSTALLATION .........................................................................13
Leveling Legs (If Desired) .....................................................13
Applications ............................................................................14
Installation in Horizontal Applications ..................................15
Air Ducts.................................................................................15
General Requirements .......................................................15
Ductwork Acoustical Treatment .......................................15
Supply Air Connections ....................................................16
Return Air Connections.....................................................16
Filter Arrangement..................................................................16
Bottom Closure Panel.............................................................17
Gas Piping...............................................................................17
Electrical Connections ............................................................18
115-v Wiring.....................................................................18
24-v Wiring.......................................................................20
Accessories ........................................................................20
Direct Venting.........................................................................20
ystems ................................................................................20
Combustion-Air and Vent Piping .....................................20
Installation..........................................................................28
Multiventing and Vent Terminations................................30
Condensate Drain....................................................................31
General...............................................................................31
Application.........................................................................31
Condensation Drain Protection .........................................33
Sequence of Operation............................................................33
Heating Mode ....................................................................33
-1-
350MAV
Series F
II 350M-40-13
9-01

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Summary of Contents for Bryant 350MAV

  • Page 1: Table Of Contents

    350MAV and operating instructions Series F DELUXE 4–WAY MULTIPOISE FIXED-CAPACITY DIRECT-VENT CONDENSING GAS FURNACE Cancels: II 350M-40-12 II 350M-40-13 9-01 Condensate Trap Freeze Protection ........7 Downflow Applications ............7 Condensate Trap Location ..........7 Condensate Trap Tubing .............7 Condensate Trap Field Drain Attachment ......8 Pressure Switch Tubing............8...
  • Page 2: Safety Considerations

    Check Primary Limit Control ...........43 gas. The 350MAV 040 through 120 size units are C.S.A. (A.G.A. Check Pressure Switch ............43 and C.G.A.) approved for use in manufactured (mobile) homes Checklist..................43...
  • Page 3 ⁄ " ⁄ " ⁄ ⁄ " " AIRFLOW ⁄ ⁄ " " ⁄ " ⁄ " ⁄ " ⁄ 19" " " " 2-IN. COMBUSTION- ⁄ " CONDENSATE DRAIN AIR CONN OUTLET OUTLET TRAP LOCATION (DOWNFLOW & CONDENSATE DRAIN HORIZONTAL LEFT) 2-IN.
  • Page 4: Codes And Standards

    TUBE ROUTING Furnace is shipped from factory in upflow configuration. Pressure tube and drain tube routing MUST match the diagrams below. Tube location when used in UPFLOW application Condensate Trap on LEFT Condensate Trap; Factory Installed Side Optional in Blower Shelf BURNER ENCLOSURE (Blower access panel removed) BURNER ENCLOSURE...
  • Page 5: Electrostatic Discharge (Esd) Precautions

    FURNACE BLOWER SHELF CONDENSATE DOOR TRAP FURNACE CONDENSATE DOOR FURNACE TRAP (INSIDE) FURNACE SIDE SIDE FIELD FIELD DRAIN DRAIN CONN CONN ALTERNATE DRAIN TUBE LOCATION SIDE VIEW FRONT VIEW END VIEW FRONT VIEW CONDENSATE TRAP DRAIN TUBE LOCATION HORIZONTAL DOWNFLOW AND ALTERNATE UPFLOW APPLICATIONS APPLICATIONS EXTERNAL UPFLOW APPLICATIONS...
  • Page 6: Condensate Trap Tubing (Factory-Shipped Orientation)

    PLUG PLUG COLLECTOR BOX COLLECTOR BOX DRAIN TUBE (BLUE DRAIN TUBE (BLUE & WHITE STRIPED) & WHITE STRIPED) COLLECTOR BOX COLLECTOR BOX TUBE (PINK) TUBE (PINK) COLLECTOR BOX COLLECTOR BOX TUBE (GREEN) TUBE (GREEN) COLLECTOR BOX INDUCER HOUSING DRAIN TUBE (BLUE) (MOLDED) DRAIN TUBE (BEHIND COLLECTOR BOX...
  • Page 7: Condensate Trap Tubing (Alternate Upflow Orientation)

    3. Install casing hole filler cap (factory-supplied in loose parts III. DOWNFLOW APPLICATIONS bag) into blower shelf hole where trap was removed. A downflow furnace application is where furnace blower is located above combustion and controls section of furnace, and conditioned 4.
  • Page 8: Condensate Trap Field Drain Attachment

    COLLECTOR BOX DRAIN TUBE (BLUE) PLUG PLUG COLLECTOR BOX TUBE (GREEN) COLLECTOR BOX DRAIN TUBE (BLUE) COLLECTOR BOX EXTENSION TUBE COLLECTOR BOX TUBE (PINK) COLLECTOR BOX TUBE (PINK) COLLECTOR BOX TUBE (GREEN) COLLECTOR BOX COLLECTOR BOX DRAIN TUBE (BLUE EXTENSION TUBE &...
  • Page 9: Condensate Trap Location

    PLUG COLLECTOR BOX AUXILIARY "J" BOX DRAIN TUBE (BLUE AND WHITE STRIPED) CONDENSATE COLLECTOR BOX TRAP TUBE (GREEN) INDUCER HOUSING COLLECTOR DRAIN TUBE (VIOLET) BOX EXTENSION COLLECTOR BOX DRAIN TUBE DRAIN TUBE (BLUE) COLLECTOR BOX EXTENSION TUBE DRAIN TUBE COUPLING COLLECTOR BOX TUBE (PINK) RELOCATE TUBE BETWEEN BLOWER SHELF AND INDUCER HOUSING FOR 040, 060, AND 080 HEATING INPUT FURNACES...
  • Page 10: Pressure Switch Tubing

    COMBUSTION – AIR INTAKE VENT A 12-IN. MIN HORIZONTAL PIPE SECTION IS RECOMMENDED WITH SHORT (5 TO 8 FT) VENT SYSTEMS TO REDUCE EXCESSIVE CONDENSATE DROPLETS FROM ″ EXITING THE VENT PIPE. WORK AREA ″ ⁄ MANUAL SHUTOFF ACCESS OPENING GAS VALVE FOR TRAP DRAIN...
  • Page 11: Condensate Trap Location

    COLLECTOR BOX DRAIN TUBE (BLUE) COLLECTOR BOX TUBE (GREEN) COLLECTOR BOX EXTENSION TUBE PLUG COLLECTOR BOX TUBE (PINK) AUXILARY “J” BOX RELOCATED HERE CONDENSATE TRAP COLLECTOR BOX DRAIN TUBE (BLUE AND WHITE STRIPED) INDUCER HOUSING DRAIN TUBE (VIOLET) COLLECTOR BOX EXTENSION TUBE A00214 Fig.
  • Page 12: Condensate Trap Freeze Protection

    2. Extend collector box pressure tube (green label) which was previously connected to condensate trap relief port connec- tion by splicing to small diameter tube (factory-supplied in loose parts bag). 3. Route extended collector box pressure tube behind inducer LEVEL (0″) motor bracket then between inducer motor and pressure FRONT FRONT...
  • Page 13: Furnace Location Relative To Cooling Equipment

    III. HAZARDOUS LOCATIONS CAUTION: If these furnaces are used during construc- tion when adhesives, sealers, and/or new carpets are being installed, make sure all combustion and circulating air requirements are followed. If operation of furnace is required during construction, use clean outside air for combustion and ventilation.
  • Page 14: Installation In Upflow And Downflow Applications

    TABLE 1—OPENING DIMENSIONS (IN.) FURNACE PLENUM OPENING FLOOR OPENING CASING APPLICATION WIDTH Upflow Applications 24–1/8 16–5/8 24–3/4 Downflow Applications on Non-Combustible Flooring 15-7/8 16-1/2 19-5/8 Downflow Applications on Combustible Flooring Using KGASB Subbase 15-1/8 16-3/4 20-3/8 Furnace with or without CD5 or CK5 Coil Assembly or 17-1/2 KCAKC Coil Box Downflow Applications on Combustible Flooring NOT Using...
  • Page 15: Installation In Horizontal Applications

    PERFORATED FURNACE DISCHARGE DUCT (OR COIL CASING FLANGE WHEN USED) COMBUSTIBLE FLOORING DOWNFLOW SUBBASE 210° SHEET METAL PLENUM FLOOR OPENING A93029 Fig. 21—Duct Flanges CAUTION: The entire length of furnace MUST be supported when furnace is used in a horizontal position to A96285 ensure proper draining.
  • Page 16: Supply Air Connections

    ⁄ -IN. ROD ANGLE ″ ⁄ IRON OR EQUIVALENT ALTERNATE SUPPORT LOCATION 4-IN. MIN 8-IN. MAX DRAIN (A) ROD LOCATION USING DIMPLE LOCATORS -IN. MAX (SEE DIMENSIONAL -IN. HEX NUT ALTERNATE SUPPORT DWG FOR & WASHER (4) LOCATION FROM BACK REQD PER ROD LOCATIONS) NOTES:...
  • Page 17: Bottom Closure Panel

    ⁄ If a factory-supplied external Filter/Media cabinet is provided, -IN. WIDE CASINGS ONLY: instructions for its application, assembly, and installation are INSTALL FIELD-SUPPLIED packaged with the cabinet. The Filter/Media cabinet can be used FILTER FILLER STRIP with the factory-supplied washable filter or a factory-specified UNDER FILTER.
  • Page 18: Electrical Connections

    SUPPLY MANUAL SHUTOFF VALVE (REQUIRED) SEDIMENT TRAP UNION BOTTOM CLOSURE PANEL FRONT FILLER PANEL A93324 A93047 Fig. 26—Typical Gas Pipe Arrangement Fig. 25—Removing Bottom Closure Panel CAUTION: If a flexible connector is required or al- CAUTION: Connect gas pipe to furnace using a backup lowed by authority having jurisdiction, black iron pipe wrench to avoid damaging gas controls.
  • Page 19 FIELD 24-V WIRING FIELD 115-, 208/230-, 460-V WIRING FACTORY 24-V WIRING FACTORY 115-V WIRING NOTE 2 THERMOSTAT FIVE FIELD-SUPPLIED TERMINALS WIRE DISCONNECT THREE-WIRE 208/230- OR HEATING- 460-V ONLY THREE PHASE 208/230-V SINGLE PHASE AUXILIARY 115-V J-BOX FIELD-SUPPLIED NOTE 1 CONTROL DISCONNECT CONDENSING UNIT...
  • Page 20: 24-V Wiring

    NFGC or NSC- IX. DIRECT VENTING NGPIC. The 350MAV Furnaces require a dedicated (one 350MAV furnace B. Combustion-Air and Vent Piping only) direct-vent system. In a direct-vent system, all air for combustion is taken directly from outside atmosphere, and all flue GENERAL →...
  • Page 21 SCHEMATIC DIAGRAM TO 115VAC FIELD DISCONNECT (WHEN USED) LGPS BLOWER (NATURAL GAS & PROPANE) SEE NOTE #10 EQUIPMENT GROUND DELAY NOTE #4 (NOT ON ALL MODELS) BLOWER OFF DELAY SPARE-2 MED LO SELECTION CHART TEST/TWIN NOTE #6 HEAT MED HI 90 SEC START SPARE-1...
  • Page 22 BLOWER OFF DELAY ADJUSTMENT SWITCH 24-V THERMOSTAT TERMINALS TEST/TWIN HUMIDIFIER TERMINAL (24-VAC 0.5 AMP MAX) LED OPERATION & DIAGNOSTIC LIGHT HARNESS CONNECTOR SEC-1 24-V TRANSFORMER SEC-2 3-AMP FUSE SPARE-1 COOL BLOWER SPEED HEAT SELECTION TERMINALS SPARE-2 EAC-1 (BLACK) EAC-ELECTRONIC AIR CLEANER TERMINALS (115-VAC 1 AMP MAX) 115-VAC (L1) EAC-2 (WHITE)
  • Page 23 † 18 in. above roof surface in Canada. ‡ 36 in. to electric meter in Canada only. NOTES: 1. If installing 2 adjacent 350MAV Furnaces, refer to Multiventing and Vent Terminations section for proper vent configurations. 2. When locating combustion-air and vent terminations, consideration must be...
  • Page 24 12 ″ MIN 12 ″ MIN VENT PIPE VENT PIPE COMBUSTION-AIR PIPE COMBUSTION-AIR PIPE HORIZONTAL TO ROOF HORIZONTAL TO SIDEWALL COMBUSTION-AIR PIPE VENT PIPE COMBUSTION-AIR PIPE 12 ″ MIN 12 ″ MIN VENT PIPE VERTICAL TO ROOF VERTICAL TO SIDEWALL NOTE: A 12 In.
  • Page 25 NOTE: Moisture in combustion-air intake may be result of EXAMPLE: An 036080 size furnace located in Indianapo- improper termination. Ensure combustion-air intake pipe is similar lis, elevation 650 ft above sea level, could be installed in an to that shown in Fig. 36, 37, 38, 39, and 40 so it will not be application requiring 3 elbows and 32 ft of vent pipe, along susceptible to areas where light snow or other sources of moisture with 5 elbows and 34 ft of combustion-air pipe.
  • Page 26 TABLE 7—MAXIMUM ALLOWABLE PIPE LENGTH (FT) NUMBER OF 90° ELBOWS TERMINATION PIPE DIA ALTITUDE (FT) UNIT SIZE TYPE (IN.)* 024040 2 Pipe or 2-in 1-1/2 036040 Concentric 024060 1-1/2 2 Pipe or 2-in 036060 Concentric 048060 1-1/2 036080 2 Pipe or 2-in 048060 Concentric 060080...
  • Page 27 TABLE 7—MAXIMUM ALLOWABLE PIPE LENGTH (FT) (CONTINUED) NUMBER OF 90° ELBOWS TERMINATION PIPE DIA ALTITUDE (FT) UNIT SIZE TYPE (IN.)* 1-1/2 024040 2 Pipe or 2-in 036040 Concentric 024060 1-1/2 2 Pipe or 2-in 036060 Concentric 048060 036080 2 Pipe or 2-in 048080 Concentric 2-1/2...
  • Page 28: Concentric Vent And Combustion-Air Termination Kit Installation

    TABLE 7—MAXIMUM ALLOWABLE PIPE LENGTH (FT) (CONTINUED) NUMBER OF 90° ELBOWS TERMINATION PIPE DIA ALTITUDE (FT) UNIT SIZE TYPE (IN.)* 1-1/2 024040 2 Pipe or 2-in 036040 Concentric 024060 1-1/2 2 Pipe or 2-in 036060 Concentric 048060 036080 2 Pipe or 2-in 048080 8001 to 9000‡...
  • Page 29 ROOF 18″ MAXIMUM BRACKET COUPLING COMBUSTION VERTICAL SEPARATION VENT BETWEEN COMBUSTION AIR AND VENT 8 3 / 4 ″ FOR 3″ KIT 6 3 / 4 ″ FOR 2″ KIT MAINTAIN 12 IN. MINIMUM CLEARANCE ABOVE HIGHEST ANTICIPATED SNOW LEVEL. MAXIMUM OF 24 IN.
  • Page 30: Multiventing And Vent Terminations

    D. Multiventing and Vent Terminations nents together using instructions in kit. When 2 or more 350MAV Furnaces are vented near each other, 4. Slide assembled kit with rain shield REMOVED through each furnace must be individually vented. NEVER common vent hole.
  • Page 31: Condensate Drain

    TABLE 8—MAXIMUM ALLOWABLE EXPOSED VENT PIPE LENGTH (FT) WITH AND WITHOUT INSULATION IN WINTER DESIGN TEMPERATURE AMBIENT* WINTER DESIGN MAX PIPE UNIT WITHOUT WITH 3/8–IN. OR TEMPERATURE DIAMETER SIZE INSULATION THICKER INSULATION† (°F) (IN.) * Pipe length (ft) specified for maximum pipe lengths located in unconditioned spaces. Pipes located in unconditioned space cannot exceed total allowable pipe length as specified in Table 7.
  • Page 32 A96128 Fig. 41—Rooftop Termination (Dimension “A” is Touching or 2-in. Maximum Separation) VENT VENT VENT COMBUSTION COMBUSTION AIR COMBUSTION AIR A93056 Fig. 42—Concentric Vent and Combustion-Air Roof Termination (Dimension “A” is Touching or 2-in. A96129 Maximum Separation) Fig. 44—Sidewall Termination of 12 in. of Less (Dimension “A”...
  • Page 33: Condensation Drain Protection

    2. Locate heat tape between sides of condensate trap back. WARNING: Caution should be taken to prevent drain- (See Fig. 47.) ing where slippery conditions may cause personal inju- 3. Use wire ties to secure heat tape in place. Wire ties can be ries.
  • Page 34: Continuous Blower Mode

    When thermostat is satisfied, R-G and R-Y circuits are opened, 4. Main blower operates at cooling speed for 10 sec, then turns furnace blower continues operating on cooling speed for an off. additional 90 sec. 5. Main blower operates at heating speed for 10 sec, then turns C.
  • Page 35: Start-Up Procedures

    6. After component test is completed and furnace is operating properly, release blower access panel door switch, replace blower access panel, and replace main furnace door. START-UP PROCEDURES I. GENERAL 1. Furnace must have a 115-v power supply properly con- nected and grounded.
  • Page 36 Verify furnace model and size. Table 9 can only be used pressure and result in excess overfire and heat exchanger for model 350MAV furnaces with heating sizes of 040 failures. through 120. Table 10 can only be used for model 350MAV furnaces with a 140 heating size.
  • Page 37 TABLE 9—MODEL 350MAV ORIFICE SIZE AND MANIFOLD PRESSURE FOR CORRECT INPUT FOR USE WITH 040 THROUGH 120 SIZE FURNACES ONLY (TABULATED DATA BASED ON 20,000 BTUH PER BURNER, DERATED 2 PERCENT FOR EACH 1000 FT ABOVE SEA LEVEL) SPECIFIC GRAVITY OF NATURAL GAS...
  • Page 38 TABLE 9—MODEL 350MAV ORIFICE SIZE AND MANIFOLD PRESSURE FOR CORRECT INPUT (CONTINUED) FOR USE WITH 040 THROUGH 120 SIZE FURNACES ONLY (TABULATED DATA BASED ON 20,000 BTUH PER BURNER, DERATED 2 PERCENT FOR EACH 1000 FT ABOVE SEA LEVEL) SPECIFIC GRAVITY OF NATURAL GAS...
  • Page 39 TABLE 9—MODEL 350MAV ORIFICE SIZE AND MANIFOLD PRESSURE FOR CORRECT INPUT (CONTINUED) FOR USE WITH 040 THROUGH 120 SIZE FURNACES ONLY (TABULATED DATA BASED ON 20,000 BTUH PER BURNER, DERATED 2 PERCENT FOR EACH 1000 FT ABOVE SEA LEVEL) SPECIFIC GRAVITY OF NATURAL GAS...
  • Page 40 TABLE 10—MODEL 350MAV ORIFICE SIZE AND MANIFOLD PRESSURE FOR CORRECT INPUT FOR USE WITH 140 THROUGH 120 SIZE FURNACES ONLY (TABULATED DATA BASED ON 23,000 BTUH PER BURNER, DERATED 2 PERCENT FOR EACH 1000 FT ABOVE SEA LEVEL) SPECIFIC GRAVITY OF NATURAL GAS...
  • Page 41 TABLE 10—MODEL 350MAV ORIFICE SIZE AND MANIFOLD PRESSURE FOR CORRECT INPUT (CONTINUED) FOR USE WITH 140 THROUGH 120 SIZE FURNACES ONLY (TABULATED DATA BASED ON 23,000 BTUH PER BURNER, DERATED 2 PERCENT FOR EACH 1000 FT ABOVE SEA LEVEL) SPECIFIC GRAVITY OF NATURAL GAS...
  • Page 42: Set Temperature Rise

    BURNER FLAME EXAMPLE: (0-2000 ft altitude) BURNER Furnace input from rating plate is 100,000 Btuh. Btu heating input = Btu/cu ft X cu ft/hr Heating value of gas = 975 Btu/cu ft Time for 1 revolution of 2-cu ft dial = 70 sec Gas rate = 103 cu ft/hr (from Table 12) Btu heating input = 103 X 975 = 100,425 Btuh.
  • Page 43: Adjust Blower Off Delay (Heat Mode)

    THERMOSTAT SUBBASE WARNING: Disconnect 115-v electrical power before TERMINALS WITH changing speed tap. Failure to follow this warning could THERMOSTAT REMOVED result in personal injury. HOOK-AROUND VOLT/AMMETER 4. To change blower motor speed selections for heating mode, remove blower motor lead from control center HEAT R Y W G terminal.
  • Page 44 Pipe Insulation Safety Controls Check Operation _______ Over Ceilings _______ Primary Limit _______ Low-Ambient Exposed Pipes _______ Pressure Switch © 2001 Bryant Heating & Cooling Systems 7310 W. Morris St. Indianapolis, IN 46231 —44— Printed in U.S.A. 350m4013 Catalog No. 5335-009...

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