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NOTE: Read the entire instruction manual before starting the
installation.
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SAFETY CONSIDERATIONS .....................................................1
INTRODUCTION ..........................................................................1
CODES AND STANDARDS........................................................3
LOCATION....................................................................................4
General ......................................................................................4
Location Relative to Cooling Equipment ................................4
Hazardous Locations.................................................................4
AIR FOR COMBUSTION AND VENTILATION ......................4
Unconfined Space .....................................................................5
Confined Space .........................................................................5
Air Ducts...................................................................................6
General Requirements .........................................................6
Ductwork Acoustical Treatment .........................................6
Supply Air Connections ......................................................6
Return Air Connections.......................................................6
Filter Arrangement ..............................................................7
INSTALLATION ...........................................................................7
Upflow Furnace Installation .....................................................7
Horizontal Furnace Attic Installation.......................................9
Construct a Working Platform ............................................9
Install Furnace .....................................................................9
Installation.................................................................................9
Leveling Legs (If Required For Upflow) ................................9
Gas Piping.................................................................................9
Electrical Connections ............................................................10
115-v Wiring......................................................................10
24-v Wiring........................................................................10
Accessories ........................................................................11
Venting...............................................................................11
General ....................................................................................11
Sequence of Operation............................................................13
Set-up Procedures ...................................................................17
Start-up Procedures.................................................................17
Adjustments.............................................................................19
Check Safety Controls ............................................................25
Checklist..................................................................................25
SAFETY CONSIDERATIONS
Installation and servicing of heating equipment can be hazardous
due to gas and electrical components. Only trained and qualified
personnel should install, repair, or service heating equipment.
Untrained personnel can perform basic maintenance functions
such as cleaning and replacing air filters. All other operations must
be performed by trained service personnel. When working on
heating equipment, observe precautions in the literature, on tags,
and on labels attached to or shipped with the unit and other safety
precautions that may apply.
installation, start-up,
and operating instructions
UPFLOW/ HORIZONTAL
TWO-STAGE, VARIABLE SPEED
GAS FURNACE
-1-
Cancels: II 333B-60-5
REGISTERED QUALITY SYSTEM
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
CAN/CGA-B149.1- and .2-M00 National Standard of Canada,
Natural Gas and Propane Installation Codes (NSCNGPIC). Wear
safety glasses and work gloves. Have a fire extinguisher available
during start-up and adjustment procedures and service calls.
Recognize safety information. This is the safety-alert symbol
When you see this symbol on the furnace and in instructions or
manuals, be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING, CAUTION,
and NOTE. These words are used with the safety-alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies hazards
which could result in personal injury or death. CAUTION is used
to identify unsafe practices which would result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability,
or operation.
These instructions cover minimum requirements and conform to
existing national standards and safety codes. In some instances,
these instructions exceed certain local codes and ordinances,
especially those that may not have kept up with changing residen-
tial construction practices. We require these instructions as a
minimum for a safe installation.

INTRODUCTION

The models 333BAV and 333JAV Series D furnaces are available
in sizes 60,000 through 117,000 Btuh input capacities. These
furnaces use variable-speed motors manufactured by General
Electric (GE) and known as ICM2+ motors. They are integrated
control motors, which include a pre-programmed micro-processor-
based control to precisely control the selected airflow rates. The
motor will be referred to as ICM2+ in the rest of this document.
The design of the upflow/horizontal gas-fired furnace is C.S.A.
(A.G.A. and C.G.A.) design-certified for use with natural and
propane gases and for installation on combustible wood flooring,
333BAV
333JAV
Series D
II 333B-60-6
9-01
EFFICIENCY
RATING
CERTIFIED
CERTIFIED
®
.

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Summary of Contents for Bryant 333JAV

  • Page 1: Table Of Contents

    Checklist..................25 INTRODUCTION SAFETY CONSIDERATIONS The models 333BAV and 333JAV Series D furnaces are available Installation and servicing of heating equipment can be hazardous in sizes 60,000 through 117,000 Btuh input capacities. These due to gas and electrical components. Only trained and qualified furnaces use variable-speed motors manufactured by General personnel should install, repair, or service heating equipment.
  • Page 2 AIRFLOW ⁄ ″ ⁄ ″ 19″ ⁄ ″ ⁄ ″ VENT CONN ⁄ ″ OUTLET 1″ 1″ ⁄ -IN. DIA ⁄ -IN. DIA HOLE ⁄ ″ ⁄ ″ POWER ENTRY POWER ENTRY ⁄ ″ ⁄ ⁄ -IN. DIA -IN. DIA ⁄...
  • Page 3: Codes And Standards

    MINIMUM INCHES CLEARANCE TO COMBUSTIBLE CONSTRUCTION This furnace is approved for UPFLOW and HORIZONTAL This forced air furnace is equipped for use with natural gas at altitudes 0-5,500 ft. (0-1,675 m) above sea installations. level. The high-altitude conversion kit MUST be installed above 5,500 ft (1,675 m).
  • Page 4: Location

    6. Before removing a new control from its container, dis- Provide ample space for servicing and cleaning. Always comply charge your body’s electrostatic charge to ground to protect with the minimum fire protection clearances shown on furnace the control from damage. If the control is to be installed in clearance-to-combustible construction label.
  • Page 5: Unconfined Space

    60 percent free area. Screens, when used, must not be For Example: smaller than 1/4-in. mesh. Louvers and grilles must be constructed so they cannot be closed. 333BAV AND 333JAV FURNACES MINIMUM SQ FT WITH The size of the openings depends upon whether air comes from HIGH-STAGE UNPUT BTUH 7-1/2 FT CEILING outside of the structure or an unconfined space inside the structure.
  • Page 6: Air Ducts

    TABLE 2—MINIMUM FREE AREA OF COMBUSTION AIR OPENING* AIR FROM INDOOR OUTDOOR AIR THROUGH OUTDOOR AIR THROUGH OUTDOOR AIR THROUGH 333BAV/333JAV UNCONFINED SPACE VERTICAL DUCTS HORIZONTAL DUCTS SINGLE DUCT FURNACE HIGH-FIRE Free Area Free Area of Round Free Area of...
  • Page 7: Filter Arrangement

    E. Filter Arrangement 21-IN. WIDE ⁄ -IN. WIDE CASINGS ONLY: CASINGS ONLY: SUPPORT RODS (3) WARNING: Never operate unit without a filter or with INSTALL FIELD-SUPPLIED EXTEND 1/4" ON EACH filter access door removed. A failure to follow this FILTER FILLER STRIP SIDE OF FILTER AND UNDER FILTER.
  • Page 8 LINE CONTACT ONLY PERMISSIBLE BETWEEN LINES FORMED BY INTERSECTIONS OF THE TOP AND TWO SIDES OF THE FURNACE JACKET, BUILDING JOISTS, STUDS, OR FRAMING. ENTRY MANUAL SHUTOFF GAS VALVE 30-IN. MIN WORK AREA FLUE VENT 24″ 6 ″ M SHEET METAL 24″...
  • Page 9: Horizontal Furnace Attic Installation

    2. Connect gas supply pipe. ″ ⁄ 3. Connect supply- and return-air ducts. II. HORIZONTAL FURNACE ATTIC INSTALLATION ″ ⁄ WARNING: Do not install the furnace on its back; ″ ⁄ safety control operation will be adversely affected. Never connect return-air ducts to back, top, or bottom of the furnace (See Fig.
  • Page 10: Electrical Connections

    TABLE 4—MAXIMUM CAPACITY OF GAS PIPE* NOMINAL INTERNAL LENGTH OF PIPE (FT) IRON PIPE DIAMETER SIZE (IN.) (IN.) 0.622 0.824 1.049 1-1/4 1.380 1400 1-1/2 1.610 2100 1460 1180 * Cubic ft of gas per hr for gas pressures of 0.5 psig (14-in. wc) or less, and a supply line pressure drop of 0.5-in. wc (based on a 0.60 specific gravity gas). Ref: Table 9-2, NFGC.
  • Page 11: Accessories

    TABLE 5—ELECTRICAL DATA OPERATING VOLTS— MAX WIRE MAX FUSE OR VOLTAGE RANGE UNIT SIZE HERTZ— UNIT WIRE LENGTH (FT)‡ CKT BKR AMPS† PHASE AMPS GAGE Max* Min* 036060 115—60—1 10.1 048080 115—60—1 10.6 060100 115—60—1 12.6 060120 115—60—1 13.9 * Permissible limits of the voltage range at which the unit will operate satisfactorily. †...
  • Page 12 FIELD 24-V WIRING FIELD 115-, 208/230-, 460-V WIRING FACTORY 24-V WIRING FACTORY 115-V WIRING NOTE 2 1-STAGE THERMOSTAT FIVE FIELD-SUPPLIED TERMINALS WIRE FUSED DISCONNECT THREE-WIRE 115-V FIELD- 208/230- OR HEATING- SUPPLIED 460-V ONLY DISCONNECT THREE PHASE 208/230-V W/W1 SINGLE NOTE 1 PHASE Y/Y2 JUNCTION...
  • Page 13: Sequence Of Operation

    TABLE 6—SETUP SWITCH DESCRIPTION SETUP NORMAL DESCRIPTION SWITCH NO. POSITION OF USE Turn switch on to obtain only high-gas-heat operation on SW-1 OFF (Staged Gas Heat) any call for heat regardless of whether R-W/W1, or Only High-Gas Heat R-W/W1, -W2 is closed. SW-1 overrides SW-2. Turn switch off for installations with single-stage thermo- stats;...
  • Page 14 FRS2 NOTE 9 NOTE 1 CONNECTION DIAGRAM TO 115VAC FIELD DISCONNECT SWITCH EQUIPMENT GROUND BHI / LOR SEE BLWM-CTL LO-GAS-HEAT LGPS FRS1 BHT / CLR HI-GAS-HEAT (WHEN USED) GRN/YEL BLWR GRN/YEL SPARE BLWM-PWR HI-COOL Connect VIO wire to pin FUSED DISCONNECT NOTE 15 ALS2 GRN/YEL...
  • Page 15 terminal (HUM). The gas valve opens, and 24-v power is NOTE: In response to thermostat call for heat R to W/W1 and with HIGH HEAT ONLY switch SW1 set to OFF, the control supplied for a field-installed humidifier at terminals selects low-heat only with LOW HEAT switch SW2 set to ON, or HUM and C 24v.
  • Page 16 NOTE: Y1 is found in the furnace and in the outdoor unit. The (3.) When thermostat is satisfied, furnace BLWM con- furnace control CPU controls BLWM airflow by sensing only tinues operating at cooling airflow for an additional G-and-Y1 for low-cooling airflow and G-and-Y1-and-Y/Y2 for 90 sec.
  • Page 17: Set-Up Procedures

    and without a blower-on delay, BLWM then operates at NOTE: Power must be cycled off and then on for the cool size selection to take effect. Power need not be cycled off and on for the high-gas-heat airflow during defrost. For both single- CFM/TON to take effect.
  • Page 18 TABLE 8—GAS HEAT AIRFLOW—NOMINAL CFM AT UP TO 0.70-IN. W.C. ESP (WITH FILTER) GAS HEAT TEMP RISE* GAS HEAT TEMP RISE (°F)† GAS HEAT AIRFLOW (CFM) FURNACE SIZE Jumper Position High-Stage Low-Stage High-Stage Low-Stage Red Wire Violet Wire M-HI 1085 1250 1135 M-HI...
  • Page 19: Adjustments

    2. After all connections have been made, purge gas lines and c. Verify furnace model. Table 11 can only be used for check for leaks. model 333BAV/333JAV Furnaces. d. Find installation altitude in Table 11. WARNING: Never purge a gas line into a combustion chamber.
  • Page 20 TABLE 11—MODEL 333BAV AND 333JAV ORIFICE SIZE* AND MANIFOLD PRESSURE FOR CORRECT INPUT (TABULATED DATA BASED ON 20,000 BTUH HIGH HEAT/13,000 BTUH LOW HEAT PER BURNER DERATED 4 PERCENT FOR EACH 1000 FT ABOVE SEA LEVEL SPECIFIC GRAVITY OF NATURAL GAS...
  • Page 21 TABLE 11—MODEL 333BAV AND 333JAV ORIFICE SIZE* AND MANIFOLD PRESSURE FOR CORRECT INPUT (CONTINUED) (TABULATED DATA BASED ON 20,000 BTUH HIGH HEAT/13,000 BTUH LOW HEAT PER BURNER DERATED 4 PERCENT FOR EACH 1000 FT ABOVE SEA LEVEL SPECIFIC GRAVITY OF NATURAL GAS...
  • Page 22 TABLE 11—MODEL 333BAV AND 333JAV ORIFICE SIZE* AND MANIFOLD PRESSURE FOR CORRECT INPUT (CONTINUED) (TABULATED DATA BASED ON 20,000 BTUH HIGH HEAT/13,000 BTUH LOW HEAT PER BURNER DERATED 4 PERCENT FOR EACH 1000 FT ABOVE SEA LEVEL SPECIFIC GRAVITY OF NATURAL GAS...
  • Page 23 EXAMPLE: 85,000 Btuh furnace installed at 4300 ft. Furnace Input Derate Furnace Input Rate Rate at Multiplier at Installation Sea Level Factor Altitude 85,000 0.82 69,700 NOTE: DO NOT set high-heat manifold pressure less than 3.2-in. wc or more than 3.8-in. wc for natural gas. If manifold pressure is outside this range, change main burner orifices.
  • Page 24 LOW-FIRE ON/OFF TABLE 13—ALTITUDE DERATE MULTIPLER FOR U.S.A. ADJUSTMENT SWITCH ALLEN SCREW ALTITUDE PERCENT OF DERATE MULTIPLIER (UNDER CAP) (FT) DERATE FACTOR FOR U.S.A.* 0—2000 1.00 HIGH-FIRE 2001—3000 8—12 0.90 ADJUSTMENT ALLEN SCREW 3001—4000 12—16 0.86 INLET (UNDER CAP) 4001—5000 16—20 0.82 PRESSURE...
  • Page 25: Check Safety Controls

    THERMOSTAT SUBBASE CAUTION: Recheck the temperature rise. It must be TERMINALS WITH within the limits specified on the unit rating plate. THERMOSTAT REMOVED Recommended operation is at midpoint of rise range or (ANITICIPATOR, CLOCK, ETC., MUST BE OUT OF CIRCUIT.) slightly above.
  • Page 26 CHECKLIST—INSTALLATION LOAD CALCULATION ________ Heating Load (Btuh) ________ Cooling Load (Btuh) ________ Furnace Model Selection AIR FOR COMBUSTION AND VENTILATION ________ Unconfined Space ________ Confined Space VENTING ________ NFGC (United States) ________ NSCNGPIC (Canada) ________ Local Codes ________ 1/4-in. Upward Slope ________ Joints Secure ________...
  • Page 27 —27—...
  • Page 28 © 2001 Bryant Heating & Cooling Systems 7310 W. Morris St. Indianapolis, IN 46231 —28— Printed in U.S.A. 333b606 Catalog No. 5333-307...

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333bavD series

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