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

Series d deluxe 4-way multipoise fixed-capacity direct-vent condensing gas furnace

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Installation, start-up, and operating instructions manual (44 pages)

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Index

DIMENSIONAL DRAWING........................................................2

SAFETY CONSIDERATIONS .....................................................3

Clearances to Combustibles......................................................3

ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS ....3-4

INTRODUCTION ..........................................................................4

APPLICATIONS ......................................................................4-11

General ......................................................................................4

Upflow Applications..............................................................4-7

Downflow Applications.........................................................7-8

Horizontal Left (Supply-Air Discharge) Applications .........8-9

Horizontal Right (Supply-Air Discharge) Applications.....9-11

LOCATION ............................................................................11-12

General...............................................................................11-12

Furnace Location Relative to Cooling Equipment ................12

Hazardous Locations...............................................................12

INSTALLATION....................................................................13-17

Leveling Legs (If Desired) .....................................................13

Installation In Upflow and Downflow Applications ........13-15

Installation In Horizontal Applications ..................................15

Filter Arrangement..................................................................16

Bottom Closure Panel.............................................................16

Gas Piping...............................................................................17

ELECTRICAL CONNECTIONS...........................................17-21

115-v Wiring......................................................................17-18

24-v Wiring.............................................................................18

Wiring Diagram ......................................................................19

Accessories ........................................................................20-21

DIRECT VENTING ...............................................................21-29

Removal of Existing Furnaces from

Common Vent Systems.....................................................21

Combustion-Air and Vent Piping .....................................21-27

Concentric Vent and Combustion-Air Termination

Kit Installation..............................................................27-29

Multiventing and Vent Termination.......................................29

CONDENSATE DRAIN ........................................................29-31

General ....................................................................................29

Application ..............................................................................29

Condensate Drain Protection.............................................29-31

installation, start-up,

and operating instructions

DELUXE 4-WAY MULTIPOISE

FIXED-CAPACITY DIRECT-VENT

CONDENSING GAS FURNACE

A93040

Page

-1-

Cancels: II 350M-40-7

As an ENERGY STAR

Partner,

Bryant/Day

Night has determined that

this product meets the EN-

CERTIFICATION OF MANUFACTURING SITE

ERGY STAR guidelines

for energy efficiency.

UPFLOW

HORIZONTAL

LEFT

DOWNFLOW

AIRFLOW

Fig. 1-Multipoise Orientations

SEQUENCE OF OPERATION..............................................31-33

Heating Mode ....................................................................31-32

Cooling Mode .........................................................................32

Continuous Blower Mode.......................................................32

Heat Pump Mode ....................................................................32

Component Test.................................................................32-33

START-UP PROCEDURES ..................................................33-41

General ....................................................................................33

Prime Condensate Trap With Water ......................................33

Purge Gas Lines......................................................................34

Adjustments .......................................................................34-41

Set Gas Input Rate ............................................................34-40

Set Temperature Rise ........................................................40-41

Adjust Blower Off Delay (Heat Mode) .................................41

Set Thermostat Heat Anticipator............................................41

CHECK SAFETY CONTROLS..................................................41

Check Primary Limit Control.................................................41

Check Pressure Switch ...........................................................41

CHECKLIST...........................................................................41-42

350MAV

Series D

II 350M-40-8

12-96

ama

A PP R O VED

AIRFLOW

HORIZONTAL

RIGHT

AIRFLOW

A93041

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Summary of Contents for Bryant 350MAV

Page 1: Table Of Contents
350MAV and operating instructions Series D DELUXE 4-WAY MULTIPOISE FIXED-CAPACITY DIRECT-VENT CONDENSING GAS FURNACE Cancels: II 350M-40-7 II 350M-40-8 12-96 ® A PP R O VED As an ENERGY STAR A93040 Partner, Bryant/Day & Night has determined that...
Page 2: Dimensional Drawing
—2—...
Page 3: Safety Considerations
SAFETY CONSIDERATIONS ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS Installing and servicing heating equipment can be hazardous due to CAUTION: Electrostatic discharge can affect electronic gas and electrical components. Only trained and qualified person- components. Take precautions during furnace installation nel should install, repair, or service heating equipment. Untrained and servicing to protect the furnace electronic control.
Page 4: Introduction
INTRODUCTION → changing residential construction practices. We require these The model 350MAV, Series D Furnaces are available in sizes instructions as a minimum for a safe installation. 40,000 through 138,000 Btuh input capacities. →...
Page 5: Upflow Applications
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 PLUG COLLECTOR BOX DRAIN TUBE (BLUE & WHITE STRIPED) COLLECTOR BOX PLUG TUBE (PINK) COLLECTOR BOX COLLECTOR BOX DRAIN TUBE (BLUE TUBE (GREEN) & WHITE STRIPED) COLLECTOR BOX TUBE (PINK) INDUCER HOUSING (MOLDED) DRAIN TUBE (BEHIND COLLECTOR BOX COLLECTOR BOX DRAIN TUBE) TUBE (GREEN) COLLECTOR BOX...
Page 7: Downflow Applications
H. Condensate Trap Freeze Protection c. Connect LOWER collector box drain connection to condensate trap. Refer to Condensate Drain Protection section for recommenda- tions and procedures. (1.) Condensate Trap Located on Left Side of Casing III. DOWNFLOW APPLICATIONS (a.) Connect LOWER collector box drain tube A downflow furnace application is where furnace blower is located (blue and white striped label) to condensate above combustion and controls section of furnace, and conditioned...
Page 8: Horizontal Left (Supply-Air Discharge) Applications
d. Use inducer housing drain tube (violet label and factory- NOTE: See Fig. 7 or 8 or tube routing label on main furnace door supplied in loose parts bag) to connect LOWER inducer to check for proper connections. housing drain connection to the condensate trap. Relocate tubes as described below.
Page 9: Horizontal Right (Supply-Air Discharge) Applications
C. Condensate Trap Field Drain Attachment CAUTION: Local codes may require a drain pan under Refer to Condensate Drain section for recommendations and entire furnace and condensate trap when a condensing procedures. furnace is used in an attic application or over a finished ceiling.
Page 10 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: Location
COLLECTOR BOX DRAIN TUBE (BLUE) COLLECTOR BOX TUBE (GREEN) COLLECTOR BOX EXTENSION TUBE PLUG COLLECTOR BOX TUBE (PINK) CONDENSATE TRAP COLLECTOR BOX DRAIN TUBE (BLUE AND WHITE STRIPED) INDUCER HOUSING DRAIN TUBE (VIOLET) COLLECTOR BOX EXTENSION TUBE A96199 Fig. 11—Horizontal Right Tube Configuration →...
Page 12: Furnace Location Relative To Cooling Equipment
FRONT °F °F 32°F MINIMUM INSTALLED AMBIENT OR FREEZE PROTECTION REQUIRED RETURN MAX 85°F MIN 55°F A93058 A93042 CAUTION: If these furnaces are installed in an uncon- NOTE: These furnaces are designed for a minimum continuous ditioned space where ambient temperatures may be 32°F return-air temperature of 60°F or intermittent operation down to 55°F or lower, freeze protection measures must be taken.
Page 13: Installation
→ INSTALLATION II. INSTALLATION IN UPFLOW OR DOWNFLOW APPLICATIONS I. LEVELING LEGS (IF DESIRED) NOTE: For downflow applications, this furnace is approved for When furnace is used in upflow position with side inlet(s), leveling use on combustible flooring when special base (available from legs may be desired.
Page 14 PLENUM OPENING FLOOR OPENING A96283 Fig. 13—Floor and Plenum Opening Dimensions FURNACE FURNACE (OR COIL CASING CD5 OR CK5 WHEN USED) COIL ASSEMBLY OR KCAKC COIL BOX COMBUSTIBLE FLOORING COMBUSTIBLE FLOORING DOWNFLOW SHEET METAL SUBBASE PLENUM SHEET METAL FLOOR PLENUM OPENING FLOOR OPENING...
Page 15: Installation In Horizontal Applications
III. INSTALLATION IN HORIZONTAL APPLICATIONS → PERFORATED These furnaces can be installed horizontally in either horizontal DISCHARGE DUCT left or right discharge position. In a crawlspace, furnace can either FLANGE be hung from floor joist or installed on suitable blocks or pad. Furnace can be suspended from each corner by hanger bolts and angle iron supports.
Page 16: Filter Arrangement
IV. FILTER ARRANGEMENT ⁄ -IN. WIDE ⁄ -IN. WIDE CASINGS ONLY: CASINGS ONLY: CUT AND FOLD CAUTION: Never operate unit without a filter or with INSTALL FIELD-SUPPLIED FACTORY-PROVIDED blower access panel removed. FILTER FILLER STRIP FILTERS AS SHOWN UNDER FILTER. TO DESIRED SIZE.
Page 17: Gas Piping
VI. GAS PIPING Gas piping must be installed in accordance with national and local SUPPLY codes. Refer to current edition of NFGC. Canadian installations MANUAL must be made in accordance with NSCNGPIC and all authorities SHUTOFF having jurisdiction. Gas supply line should be a separate line VALVE (REQUIRED) running directly from meter to furnace, if possible.
Page 18: 24-V Wiring
FIELD 24-VOLT WIRING FIELD 115-, 208/230-, 460-VOLT WIRING FACTORY 24-VOLT WIRING FACTORY 115-VOLT WIRING NOTE 2 THERMOSTAT FIVE FIELD-SUPPLIED TERMINALS WIRE FUSED DISCONNECT THREE-WIRE 208/230- OR HEATING- 460-VOLT ONLY THREE PHASE 208/230- VOLT SINGLE AUXILIARY 115-VOLT FUSED PHASE J-BOX DISCONNECT NOTE 1 CONTROL SWITCH...
Page 19: Wiring Diagram
—19—...
Page 20: Accessories
TABLE 4—ELECTRICAL DATA OPERATING VOLTS— MAX WIRE MAX FUSE UNIT UNIT VOLTAGE RANGE HERTZ— UNIT WIRE LENGTH OR CKT BKR SIZE AMPACITY† PHASE AMPS SIZE (FT)‡ AMPS** Max* Min* 024040 115—60—1 036040 115—60—1 10.0 024060 115—60—1 036060 115—60—1 048060 115—60—1 12.8 036080 115—60—1...
Page 21: Direct Venting
‡ 36 in. to electric meter in Canada only. II. COMBUSTION-AIR AND VENT PIPING NOTES: 1. If installing 2 adjacent 350MAV Furnaces, refer to Multiventing and Vent A. General Terminations section for proper vent configurations. 2. When locating combustion-air and vent terminations, consideration must be...
Page 22 Furnace combustion-air and vent pipe connections must be at- WARNING: Solvent cements are combustible. Keep tached as shown in Fig. 28. Combustion-air intake plug fitting and away from heat, sparks, and open flame. Use only in inducer housing alternate vent cap may need to be relocated in well-ventilated areas.
Page 23 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. minimum offset pipe section is recommended with short (5 to 8 ft) vent systems.
Page 24 TABLE 6—MAXIMUM ALLOWABLE PIPE LENGTH (FT) NUMBER OF 90° ELBOWS TERMINATION PIPE DIA ALTITUDE 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. 048080 Concentric 060080...
Page 25 TABLE 6—MAXIMUM ALLOWABLE PIPE LENGTH (FT) Continued NUMBER OF 90° ELBOWS TERMINATION PIPE DIA ALTITUDE 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 26 TABLE 6—MAXIMUM ALLOWABLE PIPE LENGTH (FT) Continued NUMBER OF 90° ELBOWS TERMINATION PIPE DIA ALTITUDE 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 27: Concentric Vent And Combustion-Air Termination Kit Installation
→ 5. Chamfer outside edge of pipe for better distribution of 2. The 3-in. termination bracket kit is for 2-1/2 in., 3-in., and primer and cement. 4-in. diameter 2-pipe termination systems. 3. The 2-in. concentric vent/air termination kit is for 1-in., 6.
Page 28 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 29: Multiventing And Vent Termination
IV. MULTIVENTING AND VENT TERMINATIONS d. Termination kit should be positioned where it will not be When 2 or more 350MAV Furnaces are vented near each other, damaged by or subjected to foreign objects, such as each furnace must be individually vented. NEVER common vent stones, balls, etc.
Page 30 A96128 Fig. 36—Rooftop Termination (Dimension "A" is Touching or 2-In. Maximum Separation) VENT 1″ MAXIMUM VENT (TYP) COMBUSTION AIR VENT COMBUSTION VENT A93056 A93057 Fig. 37—Concentric Vent and Combustion-Air Fig. 38—Concentric Vent and Combustion-Air Roof Termination Side Termination (Dimension "A" is Touching or 2-In. Maximum Separation) (Dimension "A"...
Page 31: Sequence Of Operation
5. When using field-supplied heat tape, follow heat tape manufacturer’s instructions for all other installation guide- lines. CONDENSATE TRAP OPEN STAND PIPE FOR A/C OR WIRE TIE(S) HUMIDIFIER DRAIN HEAT TAPE (3 WRAPS MINIMUM) TO OPEN DRAIN A93036 Fig. 42—Condensate Trap Heat Tape SEQUENCE OF OPERATION A94054 CAUTION: Furnace control must be grounded for...
Page 32: Cooling Mode
6. Blower off delay—When thermostat is satisfied, circuit NOTE: EAC-1 terminal is energized whenever blower operates. between R-W is opened, de-energizing gas valve (stopping HUM terminal is only energized when gas valve is energized. gas flow to burners) and humidifier. Blower motor and V.
Page 33: Component Test
5. Remove funnel and tube from inducer housing and replace WARNING: Blower access panel door switch opens drain connection cap and clamp. 115-v power to control center. No component operation can occur. Caution must be taken when manually closing this switch for service purposes. Failure to follow this warning could result in electrical shock, personal injury, or death.
Page 34: Purge Gas Lines
→ c. Verify furnace model and size. Table 8 can only be used A95622 for model 350MAV furnaces with heating sizes of 040 Fig. 45—Redundant Automatic Gas Valve through 120. Table 9 can only be used for model 350MAV furnaces with a 140 heating size.
Page 35 → 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% FOR EACH 1000 FT ABOVE SEA LEVEL) SPECIFIC GRAVITY OF NATURAL GAS...
Page 36 → 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% 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% 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 FOR USE WITH 140 SIZE FURNACES ONLY (TABULATED DATA BASED ON 23,000 BTUH PER BURNER, DERATED 2% 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 140 SIZE FURNACES ONLY (TABULATED DATA BASED ON 23,000 BTUH PER BURNER, DERATED 2% FOR EACH 1000 FT ABOVE SEA LEVEL) SPECIFIC GRAVITY OF NATURAL GAS...
Page 40: Set Temperature Rise
f. Look through sight glass in burner enclosure and check e. Refer to Table 11 for cu ft of gas per hr. burner flame. Burner flame should be clear blue, almost TABLE 11—GAS RATE (CU FT/HR) transparent. (See Fig. 46.) SECONDS SIZE OF TEST DIAL SECONDS...
Page 41: Adjust Blower Off Delay (Heat Mode)
3. Adjust temperature rise by adjusting blower speed. Increase THERMOSTAT SUBBASE blower speed to reduce temperature rise. Decrease blower TERMINALS WITH THERMOSTAT REMOVED speed to increase temperature rise. HOOK-AROUND WARNING: Disconnect 115-v electrical power before VOLT/AMMETER changing speed tap. Failure to follow this warning could result in personal injury.
Page 42 CHECKLIST—INSTALLATION LOAD CALCULATION Condensate Drain ____________ Heating Load (Btuh) ________ Unit Level or Pitched Forward ____________ Cooling Load (Btuh) Internal Tubing Connections Free of Kinks ________ and Traps ____________ Furnace Model Selection External Drain Connection Leak Tight and COMBUSTION AND VENT PIPING ________ Sloped Termination Location...
Page 43 —43—...
Page 44 SERVICE TRAINING Packaged Service Training programs are an excellent way to increase your knowledge of the equipment discussed in this manual, including: • Unit Familiarization • Maintenance • Installation Overview • Operating Sequence A large selection of product, theory, and skills programs is available, using popular video-based formats and materials.

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

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