Bryant 350MAV Installation, Start-Up, And Operating Instructions Manual
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Bryant 350MAV Installation, Start-Up, And Operating Instructions Manual

Bryant 350MAV Installation, Start-Up, And Operating Instructions Manual

Series e &f deluxe 4–way multipoise fixed-capacity direct-vent condensing gas furnace
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See also: User's Information Manual
NOTE: Read the entire instruction manual before starting the
installation.
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TABLE OF CONTENTS

SAFETY CONSIDERATIONS .....................................................1
INTRODUCTION ..........................................................................2
Codes and Standards ......................................................................4
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS........4
APPLICATIONS............................................................................4
General ......................................................................................4
Upflow Applications.................................................................4
Downflow Applications ............................................................6
LOCATION..................................................................................11
General ....................................................................................11
Hazardous locations ................................................................12
INSTALLATION .........................................................................12
Leveling Legs (If Desired) .....................................................12
Installation in Horizontal Applications ..................................14
Air Ducts.................................................................................14
Filter Arrangement..................................................................15
Bottom Closure Panel.............................................................16
Gas Piping...............................................................................17
Electrical Connections ............................................................17
Direct Venting.........................................................................19
Condensate Drain....................................................................28
Sequence of Operation............................................................31
START-UP PROCEDURES........................................................33
General ....................................................................................33
Prime Condensate Trap With Water ......................................33
Purge Gas Lines......................................................................34
Adjustments.............................................................................34
Check Safety Controls ............................................................38
Checklist..................................................................................39
Installation, Start-Up,
and Operating Instructions
DELUXE 4-WAY MULTIPOISE
FIXED-CAPACITY DIRECT-VENT
CONDENSING GAS FURNACE
A93040
-1-
Cancels: II 350M-40-10
UPFLOW
HORIZONTAL
LEFT
DOWNFLOW
AIRFLOW
Fig. 1-Multipoise Orientations
REGISTERED QUALITY SYSTEM
SAFETY CONSIDERATIONS
Installing and servicing heating equipment can be hazardous due to
gas and electrical components. Only trained and qualified person-
nel should install, repair, or service heating equipment. Untrained
personnel can perform basic maintenance functions such as clean-
ing and replacing air filters. All other operations must be per-
formed by trained service personnel. When working on heating
equipment, observe precautions in literature, on tags, and on labels
attached to or shipped with unit and other safety precautions that
may apply.
Follow all safety codes. In the United States, follow all safety
codes including the National Fuel Gas Code (NFGC) NFPA
54-1999/ANSI Z223.1-1999 and the Installation Standards, Warm
Air Heating and Air Conditioning Systems (NFPA 90B)
ANSI/NFPA 90B. In Canada, refer to the current edition of the
350MAV
Series E &F
II 350M-40-12
10-00
AIRFLOW
HORIZONTAL
RIGHT
AIRFLOW
AIRFLOW
A93041
EFFICIENCY
RATING
CERTIFIED
CERTIFIED
®

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  • Page 1: Table Of Contents

    Installation, Start-Up, 350MAV and Operating Instructions Series E &F DELUXE 4–WAY MULTIPOISE FIXED-CAPACITY DIRECT-VENT CONDENSING GAS FURNACE Cancels: II 350M-40-10 II 350M-40-12 10-00 AIRFLOW UPFLOW HORIZONTAL HORIZONTAL LEFT RIGHT DOWNFLOW AIRFLOW AIRFLOW A93040 NOTE: Read the entire instruction manual before starting the AIRFLOW installation.

  • Page 2: Introduction

    The 350MAV 040 through 120 size units are C.S.A. (A.G.A. and C.G.A.) approved for use in manufactured (mobile) Understand these signal words;...
  • Page 3 used when installed on combustible materials and wood flooring. Installer Packet includes: Special base is not required when this furnace is installed on Installation, Startup, and Operating Instructions manufacturer’s Coil Assembly Part No. CD5 or CK5, or when Coil Service and Maintenance Instructions Box Part No.

  • Page 4: Codes And Standards

    For copies of the NFGC and NFPA 90B contact the National Fire CAUTION: Application of this furnace should be in- Protection Association Inc., Batterymarch Park, Quincy, MA doors with special attention given to vent sizing and 02269; or the American Gas Association, 1515 Wilson Boulevard, material, gas input rate, air temperature rise, unit leveling, Arlington, VA 22209.
  • Page 5 ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS 1. Collector Box Drain, Inducer Housing Drain, Relief Port, and Pressure Switch Tubes. CAUTION: Electrostatic discharge can affect electronic These tubes should be factory attached to condensate trap components. Take precautions during furnace installation and pressure switch ready for use in UPFLOW applications. and servicing to protect the furnace electronic control.
  • Page 6 PLUG COLLECTOR BOX DRAIN TUBE (BLUE & WHITE STRIPED) COLLECTOR BOX TUBE (PINK) COLLECTOR BOX PLUG TUBE (GREEN) COLLECTOR BOX INDUCER HOUSING DRAIN TUBE (BLUE (MOLDED) DRAIN & WHITE STRIPED) TUBE (BEHIND COLLECTOR BOX COLLECTOR BOX TUBE (PINK) DRAIN TUBE) COLLECTOR BOX DRAIN TUBE (BLUE) CONDENSATE...

  • Page 7: Downflow Applications

    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 8: Horizontal Left (Supply-Air Discharge) Applications

    b. Remove and discard UPPER (molded) inducer housing CAUTION: Local codes may require a drain pan under drain tube which was previously connected to conden- entire furnace and condensate trap when a condensing sate trap. furnace is used in an attic application or over a finished c.

  • Page 9: Horizontal Right (Supply-Air Discharge) Applications

    D. Pressure Switch Tubing CAUTION: The condensate trap MUST be installed The LOWER collector box pressure tube (pink label) is factory below furnace. See Fig. 4 for dimensions. The drain connected to the pressure switch for use when furnace is installed connection to condensate trap must also be properly in UPFLOW applications.
  • Page 10 A. Condensate Trap Location d. Clamp tube to prevent any condensate leakage. The condensate trap must be removed from the factory-installed 2. Inducer Housing Drain Tube blower shelf location and relocated in selected application location a. Remove factory-installed cap and clamp from LOWER as shown in Fig.

  • Page 11: Location

    tube (green label) which was factory connected to the condensate CAUTION: The condensate trap MUST be installed trap relief port connection MUST be connected to the pressure below furnace. See Fig. 4 for dimensions. The drain switch in DOWNFLOW or HORIZONTAL RIGHT applications. connection to condensate trap must also be properly NOTE: See Fig.
  • Page 12 CAUTION: If these furnaces are used during construc- tion when adhesives, sealers, and/or new carpets are LEVEL (0″) being installed, make sure all combustion and circulating FRONT FRONT LEVEL (0″) air requirements are followed. If operation of furnace is ″ MAX ⁄...

  • Page 13: Furnace Location Relative To Cooling Equipment

    ″ ⁄ ″ ⁄ ″ ⁄ ″ ⁄ ″ ⁄ 18-IN. MINIMUM TO BURNERS A93044 ″ ⁄ ″ ⁄ ″ ⁄ WARNING: When furnace is installed in a residential garage, it must be installed so that burners and ignition A89014 sources are located a minimum of 18 in.

  • Page 14: Air Ducts

    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: Filter Arrangement

    Flexible connections should be used between ductwork and FURNACE furnace to prevent transmission of vibration. Ductwork passing through unconditioned space should be insulated to enhance CD5 OR CK5 system performance. When air conditioning is used, a vapor COIL ASSEMBLY barrier is recommended. OR KCAKC COIL BOX Maintain a 1–in.
  • Page 16 ⁄ -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

    VI. BOTTOM CLOSURE PANEL WASHABLE FILTER These furnaces are shipped with bottom enclosure panel installed in bottom return-air opening. This panel MUST be in place when side return air is used. FILTER RETAINER To remove bottom closure panel, perform following: 1.

  • Page 18: Electrical Connections

    from furnace and capped before pressure test. If test pressure is WARNING: Use proper length of pipe to avoid stress equal to or less than 0.5 psig (14-in. wc), turn off electric shutoff on gas control manifold. Failure to follow this warning switch located on gas valve before test.
  • Page 19 WARNING: The cabinet MUST have an uninterrupted CAUTION: If manual disconnect switch is to be or unbroken ground according to NEC ANSI/NFPA mounted on furnace, select a location where a drill or 70-1999 and Canadian Electrical Code CSA C22.1 or fastener will not contact electrical or gas components.

  • Page 20: Direct Venting

    (See Fig. 26.) This allows proper IX. DIRECT VENTING drainage of vent condensate. The 350MAV Furnaces require a dedicated (one 350MAV furnace Combustion-air and vent pipes must terminate together in same only) direct-vent system. In a direct-vent system, all air for...
  • 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 ‡ 36 in. to electric meter in Canada only. aerosols, detergents, bleaches, cleaning solvents, salts, air NOTES: 1. If installing 2 adjacent 350MAV Furnaces, refer to Multiventing and Vent fresheners, adhesives, paint, and other household prod- Terminations section for proper vent configurations.
  • Page 23 NOTE: Select 1 vent pipe connection and NOTE: Select 1 vent pipe connection and 1 combustion-air pipe connection. 1 combustion-air pipe connection. EXAMPLE: An 036080 size furnace located in Indianapo- lis, elevation 650 ft above sea level, could be installed in an FLOW application requiring 3 elbows and 32 ft of vent pipe, along COMBUSTION-...
  • 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 TABLE 6—MAXIMUM ALLOWABLE PIPE LENGTH (FT) NUMBER OF 90° ELBOWS TERMINATION PIPE DIA ALTITUDE (FT) UNIT SIZE TYPE (IN.)* 040-08 2 Pipe or 2-in 1-1/2 040-12 Concentric 060-08 1-1/2 2 Pipe or 2-in 060-12 Concentric 060-16 1-1/2 080-12 2 Pipe or 2-in 080-16 Concentric 080-20...
  • Page 26 TABLE 6—MAXIMUM ALLOWABLE PIPE LENGTH (FT) (CONTINUED) NUMBER OF 90° ELBOWS TERMINATION PIPE DIA ALTITUDE (FT) UNIT SIZE TYPE (IN.)* 1-1/2 040-08 2 Pipe or 2-in 040-12 Concentric 060-08 1-1/2 2 Pipe or 2-in 060-12 Concentric 060-16 080-12 2 Pipe or 2-in 080-16 Concentric 2-1/2...
  • Page 27 TABLE 6—MAXIMUM ALLOWABLE PIPE LENGTH (FT) (CONTINUED) NUMBER OF 90° ELBOWS TERMINATION PIPE DIA ALTITUDE (FT) UNIT SIZE TYPE (IN.)* 1-1/2 040-08 2 Pipe or 2-in 040-12 Concentric 060-08 1-1/2 2 Pipe or 2-in 060-12 Concentric 060-16 080-12 2 Pipe or 2-in 080-16 8001 to 9000‡...
  • Page 28 Termination kit should be positioned so that it will not be affected by wind eddy (such as inside building corners) When 2 or more 350MAV Furnaces are vented near each other, or allow recirculation of flue gases, airborne leaves, or each furnace must be individually vented.

  • Page 29: Condensate Drain

    furnaces are vented near each other, 2 vent terminations may be X. CONDENSATE DRAIN installed as shown in Fig. 35, 36, 37, 38, or 39, but next vent termination must be at least 36 in. away from first 2 terminations. It is important that vent terminations be made as shown to avoid recirculation of flue gases.

  • Page 30: Sequence Of Operation

    OVERHANG OR ROOF VENT 12″ MINIMUM 1″ MAXIMUM COMBUSTION-AIR COMBUSTION VENT MAINTAIN 12 IN. (18 IN. FOR CANADA) MINIMUM CLEARANCE ABOVE HIGHEST ANTICIPATED SNOW LEVEL. MAXIMUM OF 24 IN. ABOVE ROOF. MAINTAIN 12 IN. CLEARANCE A93054 Fig. 31—Concentric Vent and Combustion-Air Roof Termi- ABOVE HIGHEST ANTICIPATED SNOW nation (Preferred)
  • Page 31 TABLE 7—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 6.
  • Page 32 VENT VENT 1″ MAXIMUM (TYP) COMBUSTION AIR VENT COMBUSTION VENT A93056 Fig. 36—Concentric Vent and Combustion-Air Roof Termination (Dimension “A” is Touching or 2-in. Maximum Separation) A93057 Fig. 37—Concentric Vent and Combustion-Air Side Termination (Dimension “A” is Touching or 2-in. Maximum Separation) VENT VENT...
  • Page 33 speed. Then a gas heat mode begins. Blower remains operating at heating speed for 15 sec or until end of prepurge period, then blower shuts off until end of ignitor warm up and trial for ignition periods (a total of 24 sec). Blower restarts at heating speed. When R-W thermostat call disappears, control completes inducer post-purge period of 15 sec (5 sec if jumper has been cut for 140 size unit in downflow orientation) and changes to cooling speed...

  • Page 34: Start-Up Procedures

    5. When above items have been completed, the component II. PRIME CONDENSATE TRAP WITH WATER test sequence will occur as described in the Component Test CAUTION: Condensate trap must be PRIMED or Sequence section above. proper draining may not occur. The condensate trap has 2 NOTE: Be sure to record the status code which is flashed 4 times internal chambers which can ONLY be primed by pour- at start of component test for further troubleshooting.
  • Page 35 Verify furnace model and size. Table 8 can only be used c. Turn adjusting screw, counterclockwise (out) to decrease for model 350MAV furnaces with heating sizes of 040 manifold pressure or clockwise (in) to increase manifold through 120. Table 9 can only be used for model pressure.
  • Page 36 TABLE 8—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 37 TABLE 8—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 38 TABLE 8—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 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 40 TABLE 9—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 41 EXAMPLE: 100,000 Btuh input furnace installed at 4300 ft. Derate Furnace Input Rate Furnace Input Rate Multiplier at Installation at Sea Level Factor Altitude 100,000 0.91 91,000 TABLE 10–ALTITUDE DERATE MULTIPLIER FOR U.S.A. ALTITUDE PERCENT DERATE MULTIPLIER (FT) OF DERATE FACTOR FOR U.S.A.* BURNER 0–2000...

  • Page 42: Check Safety Controls

    C. Adjust Blower Off Delay (Heat Mode) TABLE 11—GAS RATE (CU FT/HR) If desired, the main blower off time delay period may be SECONDS SECONDS SIZE OF TEST DIAL SIZE OF TEST DIAL lengthened or shortened when operating in the heating mode to FOR 1 FOR 1 provide greater comfort.

  • Page 43: Checklist

    CHECKLIST—INSTALLATION LOAD CALCULATION Condensate Drain _______ Heating Load (Btuh) _______ Unit Level or Pitched Forward Internal Tubing Connections Free _______ Cooling Load (Btuh) _______ of Kinks and Traps External Drain Connection Leak _______ Furnace Model Selection _______ Tight and Sloped Condensate Trap Primed before COMBUSTION AND VENT PIPING _______...
  • Page 44 Course descriptions and schedules are in our catalog. CALL FOR FREE CATALOG 1-800-962-9212 [ ] Packaged Service Training [ ] Classroom Service Training A94328 © 2000 Bryant Heating & Cooling Systems 7310 W. Morris St. Indianapolis, IN 46231 —44— Printed in U.S.A. 350m4012 Catalog No. 5335-007...

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