Bryant 349HAV Series Installation, Start-Up, And Operating Instructions Manual
B series horizontal induced-combustion sizes 050-125
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Also See for 349HAV Series:
- User's information manual (8 pages) ,
- Service and maintenance procedures manual (8 pages)
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NOTE: Read the entire instruction manual before starting the
installation.
This symbol → indicates a change since the last issue.
INDEX
SAFETY CONSIDERATIONS ................................................1-2
Clearances From Combustible Materials .................................1
INTRODUCTION.......................................................................2-3
Dimensional Drawing ...............................................................2
LOCATION....................................................................................3
General ......................................................................................3
Furnace Location Relative to Cooling Equipment ..................3
Hazardous Locations.................................................................3
AIR FOR COMBUSTION AND VENTILATION...................3-5
General...................................................................................3-4
Unconfined Space .....................................................................4
Confined Space......................................................................4-5
Contaminated Combustion Air.................................................5
INSTALLATION........................................................................5-9
Duct Work Recommendations..................................................5
Horizontal Attic Installation .....................................................6
Horizontal Crawlspace Installation ..........................................6
Filter Arrangement....................................................................6
Gas Piping..............................................................................6-7
Reversing Procedure..............................................................7-9
ELECTRICAL CONNECTIONS.............................................9-11
115-v Wiring........................................................................9-11
Wiring Diagram ......................................................................10
24-v Wiring.............................................................................11
Accessories..............................................................................11
VENTING ...............................................................................11-13
General Venting Requirements .........................................11-12
Pre-Installation Vent System Inspection ................................12
Venting System..................................................................12
Metal Vent Installations..........................................................12
Masonry Chimney Installations..............................................12
Multistory Installations ...........................................................12
Sidewall Venting Installations................................................12
SEQUENCE OF OPERATION...................................................13
Heating Mode..........................................................................13
Cooling Mode .........................................................................13
START-UP, ADJUSTMENT, AND SAFETY CHECK.......13-18
General ....................................................................................13
Remove Shipping Bracket ......................................................13
Purge Gas Lines......................................................................13
Operational Checkout .............................................................13
Adjustments .......................................................................14-17
Adjust Pilot Flame ..................................................................14
Set Gas Input Rate ............................................................14-17
Set Temperature Rise..............................................................17
Set Blower Off Delay.............................................................17
Set Thermostat Heat Anticipator............................................17
Check Safety Controls.......................................................17-18
CHECKLIST ................................................................................18
installation, start-up,
and operating instructions
HORIZONTAL INDUCED-COMBUSTION
GAS FURNACE
SIZES 050-125, SERIES B
Page
-1-
Cancels: II 349H-50-4
®
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 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.
TABLE 1-ATTIC, CLOSET*, OR ALCOVE CLEARANCES
FROM COMBUSTIBLE MATERIALS (IN.)
UNIT SIZE
Sides
Back
Top of Plenum
Vent Connector
Front Casing
Front Service
* For closet installations, refer to Air for Combustion and Ventilation section.
† Measured from end of inducer motor.
WARNING: Failure to comply with all of the above
clearances will create a fire hazard.
→
Follow all safety codes. In the United States, follow all safety
codes including the National Fuel Gas Code (NFGC) NFPA No.
54-1996/ANSI Z223.1-1996 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
National Standard of Canada CAN/CGA-B149.1- and .2-M95
Natural Gas and Propane Installation Codes (NSCNGPIC). Wear
safety glasses and work gloves. Have 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, and CAU-
TION. These words are used with the safety-alert symbol. DAN-
GER 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 unsafe practices which would result in minor personal
injury or product and property damage.
349HAV
II 349H-50-5
6-98
ama
A PP R O VED
R
050, 075, 100, & 125
6
6
2
6
6†
30
.
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Table of Contents
Related Manuals for Bryant 349HAV Series
Summary of Contents for Bryant 349HAV Series
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Page 1: Table Of Contents
349HAV and operating instructions HORIZONTAL INDUCED-COMBUSTION GAS FURNACE SIZES 050—125, SERIES B Cancels: II 349H-50-4 II 349H-50-5 6-98 NOTE: Read the entire instruction manual before starting the installation. This symbol → indicates a change since the last issue. -
Page 2: Introduction
Cleveland, OH 44131 or National Fire Protection Association Inc., Batterymarch Park, Quincy, MA 02269. For a copy of NFPA 90B, INTRODUCTION The design of the 349HAV Horizontal Induced-Combustion Gas contact National Fire Protection Association Inc., Batterymarch Furnace is A.G.A./C.G.A. certified as a Category I furnace for Park, Quincy, MA 02269. -
Page 3: Location
This furnace is designed for a minimum continuous return-air Locate furnace where available electrical and gas supplies meet the temperature of 60°F db or intermittent operation down to 55°F db specifications on furnace rating plate. such as when used with a night setback thermostat. Return-air Line contact is only permissible between lines formed by the temperature must not exceed a maximum of 85°F db. -
Page 4: Unconfined Space
100 sq in. per opening. For Example: All fuel-burning equipment must be supplied with air for combus- 349HAV FURNACE FREE AREA PER tion of the fuel. Sufficient air MUST be provided to ensure there INPUT BTUH OPENING (SQ IN.) -
Page 5: Contaminated Combustion Air
For Example: The following recommendations should be followed when install- ing duct work: 349HAV FURNACE FREE AREA PER ROUND PIPE INPUT BTUH OPENING (SQ IN.) (IN. DIA) 1. Install locking type dampers in all branches of individual 50,000 25.0 ducts to balance out system. Dampers should be adjusted to 75,000 37.5... -
Page 6: Horizontal Attic Installation
24″ SHEET METAL 30-IN. MIN WORK AREA 24″ A96070 Fig. 3—Typical Attic Installation II. HORIZONTAL ATTIC INSTALLATION IV. FILTER ARRANGEMENT The furnace can be installed horizontally for either left- or CAUTION: Never operate the unit without a filter or right-side supply. See Fig. 3 for a typical attic installation and with the filter removed. -
Page 7: Gas Piping
TABLE 3—MAXIMUM CAPACITY OF PIPE* Piping should be pressure tested in accordance with local and national plumbing and gas codes before furnace has been attached. NOMINAL LENGTH OF PIPE (FT) If test pressure exceeds 0.5 psig (14-in. wc), the gas supply pipe IRON INTERNAL must be disconnected from furnace and capped before pressure... - Page 8 ALTERNATE LIMIT SWITCH BLOWER BLOWER DOOR DOOR ALTERNATE LIMIT SWITCH CONTROL LAYOUT (AS SHIPPED) CONTROL LAYOUT (FIELD REVERSED) A91387 Fig. 5—Control Layout for Reversal A96073 Fig. 6—Removing Burner/Manifold Assembly SWITCH BRACKET REMOVE A96074 Fig. 8—Reattaching Rollout Switch Bracket BASE BRACKET A92306 Fig.
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Page 9: Wiring Diagram
15. Secure gas valve wires to manifold assembly with wire tie. CAUTION: Do not connect aluminum wire between the 16. Replace burner removal covers on respective sides of disconnect switch and the furnace. Use only copper wire. furnace. 17. Remove front blower door and reinstall so instructional Make all electrical connections in accordance with the National labels are rightside up. -
Page 10: Wiring Diagram
LEGEND LINE V PRINTED CIRCUIT BLACK LIMIT BOARD WIRING BLUE PRESSURE SWITCH BROWN ROLL OUT SWITCH* LINE V GREEN BLOWER INTERLOCK FACTORY WIRING ORANGE CONDENSING UNIT MANUAL RESET LINE V RD/BK RED/BLACK STRIPE TRANSFORMER FIELD WIRING VIOLET LOW VOLT. FUSE ORANGE WIRE NUT WHITE GROUND... -
Page 11: 24-V Wiring
→ TABLE 4—ELECTRICAL DATA OPERATING VOLTS— MAX WIRE MAX FUSE VOLTAGE RANGE UNIT SIZE HERTZ— UNIT WIRE LENGTH† OR CIRCUIT PHASE AMPS SIZE (FT) BREAKER‡ AMPS Max* Min* 036050 115—60—1 036075 115—60—1 048075 115—60—1 11.3 048100 115—60—1 060100 115—60—1 13.1 060125 115—60—1 11.3... -
Page 12: Pre-Installation Vent System Inspection
6. All runs of pipe should be as short as possible with as few 7. If improper venting is observed during any of above tests, turns as possible. the venting system must be corrected. Vent system or vent connectors may need to be resized. For any 7. -
Page 13: Sequence Of Operation
SEQUENCE OF OPERATION 1. Remove blower access panel. Using the schematic diagram in Fig. 11, follow the sequence of 2. Remove 2 mounting screws. operation through the different modes. This furnace has a unique 3. Slide bracket off blower wheel hub. control system. -
Page 14: Adjustments
See Table 7 for nominal burner orifice size. High- supply. altitude input ratings include a 10 percent derate as required by Canadian standards. c. Verify the furnace model. Table 5 can only be used for model 349HAV Furnaces. h. Proceed to item 3 to adjust manifold pressure. —14—... - Page 15 TABLE 5—MODEL 349HAV ORIFICE SIZE AND MANIFOLD PRESSURE FOR CORRECT INPUT RATE (TABULATED DATA BASED ON ALTITUDES UP TO 2000 FT AND 25,000 BTUH PER BURNER) GAS HEAT SPECIFIC GRAVITY OF NATURAL GAS VALUE 0.56 0.58 0.60 0.62 0.64 0.66 0.68...
- Page 16 TABLE 6—GAS RATE CU FT/HR IGNITION SYSTEM IGNITOR CONTROL SWITCH CONNECTOR SECONDS SIZE OF TEST DIAL SECONDS SIZE OF TEST DIAL FOR 1 FOR 1 IGNITION REVOLUTION cu ft cu ft cu ft REVOLUTION cu ft cu ft cu ft MODULE 1800 1636...
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Page 17: Set Temperature Rise
NOTE: It is only necessary to remove 1 manifold retention plate to gain access to burners. d. Remove burners from assembly and change orifices as required. 60 Sec 90 Sec 120 Sec 150 Sec e. Reinstall assembly by reversing the procedure in items a DELAY OFF DIP SWITCH SETTINGS through d making sure that assembly is securely mounted under manifold retention plate on opposite side... -
Page 18: Checklist
3. Turn on 115-v power to furnace. and shuts off power to automatic gas valve before there is furnace damage or a flame rollout outside of furnace cabinet. The loss of 4. Set thermostat to call for heat. When pressure switch is power to gas valve shuts off gas burners, however, blower is still functioning properly, ignitor should not glow. - Page 19 —19—...
- Page 20 Course descriptions and schedules are in our catalog. CALL FOR FREE CATALOG 1-800-962-9212 [ ] Packaged Service Training [ ] Classroom Service Training A94328 © 1998 Bryant Heating & Cooling Systems 7310 W. Morris St. Indianapolis, IN 46231 —20— Printed in U.S.A. 349h505 Catalog No. 5334-900...