Instruction/ maintenance manual of the product 340MAV Bryant
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NOTE: Read the entire instruction manual before starting the installation. This symbol → indicates a change since the last issue. Index Page DIMENSIONAL DRAWING ........................................................3 SAFETY CONSIDERATIONS ........
WARNING: Improper installation, adjustment, alter- ation, service, maintenance, or use can cause carbon monoxide poisoning, explosion, fire, electrical shock, or other conditions which may cause personal injury or property damage.
Fig. 2—Dimensional Drawing DIMENSIONS (IN.) UNIT SIZE A D E 024040 17-1/2 15-7/8 16 036040 17-1/2 15-7/8 16 024060 17-1/2 15-7/8 16 036060 17-1/2 15-7/8 16 048060 17-1/2 15-7/8 16 036080 17-1/2 15-7.
These furnaces are shipped with the following materials to assist in proper furnace installation. These materials are shipped in the main blower compartment.
VII. ELECTRICAL CONNECTIONS • US: National Electrical Code (NEC) ANSI/NFPA 70-2002 • CANADA: Canadian Electrical Code CSA C22.1 ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS CAUTION: Electrostatic discharge can affect electronic components. Take precautions during furnace installation and servicing to protect the furnace electronic control.
4. If you touch ungrounded objects (and recharge your body with static electricity), firmly touch a clean, unpainted metal surface of the furnace again before touching control or wires. 5. Use this procedure for installed and uninstalled (un- grounded) furnaces.
desired furnace side for field drain attachment. See Condensate Trap Tubing (Factory-Shipped Orientation) section for drain tube extension details. (See Fig. 5.) B. Condensate Trap Tubing (Factory-Shipped Orientation) NOTE: See Fig. 6 or tube routing label on main furnace door to confirm location of these tubes.
H. Condensate Trap Freeze Protection Refer to Condensate Drain Protection section for recommenda- tions and procedures. III. DOWNFLOW APPLICATIONS A downflow furnace application is where furnace blower is located above combustion and controls section of furnace, and conditioned air is discharged downwards.
a. Remove factory-installed cap and clamp from LOWER inducer housing drain connection. b. Remove and discard UPPER (molded) inducer housing drain tube which was previously connected to conden- sate trap. c. Install cap and clamp on UPPER inducer housing drain connection where molded drain tube was removed.
IV. HORIZONTAL LEFT (SUPPLY-AIR DISCHARGE) APPLICATIONS A horizontal left furnace application is where furnace blower is located to the right of combustion and controls section of furnace, and conditioned air is discharged to the left. NOTE: The auxiliary junction box (J-Box) MUST be relocated to opposite side of furnace casing.
Fig. 11—Attic Location and Working Platform A93031 COMBUSTION – AIR INTAKE VENT MANUAL SHUTOFF GAS VALVE SEDIMENT TRAP CONDENSATE TRAP DRAIN ACCESS OPENING FOR TRAP 30 ″ MIN WORK AREA 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.
A. Condensate Trap Location The condensate trap must be removed from the factory-installed blower shelf location and relocated in selected application location as shown in Fig. 2 or 12. To relocate condensate trap from the blower shelf to desired location, perform the following: 1.
NOTE: For upflow/downflow applications install furnace so that it is level or pitched forward within 1/2-in. for proper furnace operation. For horizontal applications pitch 1/4-in. minimum to 1/2-in. maximum forward to ensure proper condensate drainage from secondary heat exchangers.
III. HAZARDOUS LOCATIONS INSTALLATION I. LEVELING LEGS (IF DESIRED) When furnace is used in upflow position with side inlet(s), leveling legs may be desired. (See Fig. 17.) Install field-supplied, corrosion-resistant 5/16-in. machine bolts and nuts. NOTE: The maximum length of bolt should not exceed 1-1/2 in.
TABLE 1—OPENING DIMENSIONS (IN.) FURNACE CASING WIDTH APPLICATION PLENUM OPENING FLOOR OPENING AB C D 17-1/2 Upflow Applications 16 24-1/8 16-5/8 24-3/4 Downflow Applications on Non-Combustible Floo.
Air Conditioning Contractors National Association (SMACNA) or American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE) or consult The Air Systems Design Guide- lines reference tables available from your local distributor.
if constructed and installed in accordance with the latest edition of SMACNA construction standard on fibrous glass ducts. Both acoustical lining and fibrous ductwork shall comply with NFPA 90B as tested by UL Standard 181 for Class 1 Rigid air ducts.
VI. BOTTOM CLOSURE PANEL 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. To remove bottom closure panel, perform following: 1. Tilt or raise furnace and remove 2 screws holding front filler panel.
CAUTION: If a flexible connector is required or al- lowed by authority having jurisdiction, black iron pipe shall be installed at furnace gas valve and extend a minimum of 2 in. outside furnace casing. Failure to follow this caution will result in intermittent unit opera- tion or performance satisfaction.
Field-supplied wiring shall conform with the limitations of 63°F (35°C) rise. WARNING: Blower access panel door switch opens 115-v power to control center. No component operation can occur. Do not bypass or close switch with panel removed. Failure to follow this warning could result in personal injury or death.
Fig. 30—Wiring Diagram A02271 PCB TRAN FRS NOTE #11 LS PRS (WHE N USED) LGPS FUSED OR CIRCUIT BREAKER DI SCONNEC T SWI TCH ( WHEN REQ’D) NOTE #2 JB L1 L1 BLWR TO 115V AC FIELD DISCONNECT NOTE #2 E.
NOTE: DO NOT connect furnace control HUM terminal to HUM (humidifier) terminal on Thermidistat™, Zone Controller or simi- lar device. See Thermidistat™, Zone Controller, thermostat, or controller manufacturer’s instructions for proper connection.
Fig. 31—Control Center A02100 BL W NUETRAL ST A TUS CODE LED SEC-2 SEC-1 EAC-2 L2 FUSE 3-AMP 0.5 AMP@24V AC HUM TEST/TWIN G Com W Y R 24V 120 180 90 150 BLOWER OFF-DELA Y PL T 1 COOL HEA T SP ARE-1 .
and Canada. In Canada construct all combustion-air and vent pipes for this unit of CSA or ULC listed schedule-40 PVC, PVC-DWV or ABS-DWV pipe and pipe cement. SDR pipe is NOT approved in Canada. See Table 7 for maximum pipe lengths and Fig. 36, 37, 38, 39, and 40 for exterior piping arrangements.
NOTE: The minimum combustion-air and vent pipe length (each) for these furnaces is 5 ft. Short pipe lengths (5-8 ft) may discharge water droplets. These droplets may be undesirable, and a 12-in. minimum offset pipe section is recommended, as shown in Fig.
d. Install pipe support (factory-supplied in loose parts bag) into selected furnace casing combustion-air pipe hole. Pipe support should be positioned at bottom of casing hole. e. Insert 2-in. diameter pipe into intake housing. NOTE: A 2-in. diameter pipe must be used within the furnace casing.
TABLE 7—MAXIMUM ALLOWABLE PIPE LENGTH (FT) ALTITUDE (FT) UNIT SIZE TERMINATION TYPE PIPE DIA (IN.)* NUMBER OF 90° ELBOWS 1 23456 0 to 2000 024040 036040 2 Pipe or 2-in Concentric 1 5 NA NA NA NA NA.
TABLE 7—MAXIMUM ALLOWABLE PIPE LENGTH (FT) (CONTINUED) ALTITUDE (FT) UNIT SIZE TERMINATION TYPE PIPE DIA (IN.)* NUMBER OF 90° ELBOWS 1 2 3456 4001 to 5000‡ 024040 036040 2 Pipe or 2-in Concentric.
b. Reposition elastometric (rubber) inducer housing outlet cap and clamp to appropriate unused inducer housing connection. Tighten clamp. WARNING: Inducer housing outlet cap must be in- stalled and fully seated against inducer housing. Clamp must be tightened to prevent any condensate leakage.
fully into inducer housing connection until it bottoms on the internal stop. Tighten both clamps to secure the pipe to inducer housing. Tighten the clamp screws to 15 in.-lb. of torque. e. Install casing hole filler cap (factory-supplied in loose parts bag) in unused vent pipe casing hole.
5. Check required dimensions as shown in Fig. 36, 39, or 40. C. Concentric Vent/Air Termination Kit 1. Determine location for termination. Consideration of the following should be made when determining an appropriate location for termination kit. a. Comply with all clearance requirements as stated in Table 5.
Fig. 39—Sidewall Termination of 12 in. or More A87225 MAINTAIN 12 IN. CLEARANCE ABOVE HIGHEST ANTICIPATED SNOW LEVEL OR GRADE, WHICHEVER IS GREATER. 90 ° VENT 12 IN. SEPARATION BETWEEN BOTTOM OF COMBUSTION AIR AND BOTTOM OF VENT BRACKET COMBUSTION-AIR 12 ″ MINIMUM OVERHANG OR ROOF Fig.
Fig. 44—Sidewall Termination of 12 in. or Less (Dimension "A" is Touching or 2-In. Maximum Separation) A96129 A COMBUSTION AIR COMBUSTION AIR VENT Fig. 42—Concentric Vent and Combustion-Air Roof Termination (Dimension "A" is Touching or 2-In.
It is important that vent terminations be made as shown to avoid recirculation of flue gases. Dimension "A" in Fig. 41, 42, 43, 44, and 45 represents distance between pipes or rain shields, as touching or 2-in. maximum separation. CONDENSATE DRAIN I.
SEQUENCE OF OPERATION CAUTION: Furnace control must be grounded for proper operation, or control will lock out. Control is grounded through green/yellow wire routed to gas valve and burner box screw. Failure to follow this caution will result in intermittent unit operation.
Control initiates a 90-sec blower only on period before starting another heat pump cycle if there is a power interruption. Anytime control senses false flame, control locks out of heating mode.
1. Determine natural gas orifice size and manifold pressure for correct input. a. Obtain average gas heat value (at installed altitude) from local gas supplier. b. Obtain average gas specific gravity from local gas supplier. c. Verify furnace model and size.
TABLE 9—MODEL 340MAV 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) ALTITUDE RANGE (FT) AVG GAS HEAT VALUE AT ALTITUDE (BTU/CU FT) SPECIFIC GRAVITY OF NATURAL GAS 0.
TABLE 9—MODEL 340MAV 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) ALTITUDE RANGE (FT) AVG GAS HEAT VALUE AT ALTITUDE (BTU/CU FT) SPECIFIC GRAVITY OF NATURAL GAS 0.
TABLE 9—MODEL 340MAV 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) ALTITUDE RANGE (FT) AVG GAS HEAT VALUE AT ALTITUDE (BTU/CU FT) SPECIFIC GRAVITY OF NATURAL GAS 0.
TABLE 10—MODEL 340MAV 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) ALTITUDE RANGE (FT) AVG GAS HEAT VALUE AT ALTITUDE (BTU/CU FT) SPECIFIC GRAVITY OF NATURAL GAS 0.
TABLE 10—MODEL 340MAV 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) ALTITUDE RANGE (FT) AVG GAS HEAT VALUE AT ALTITUDE (BTU/CU FT) SPECIFIC GRAVITY OF NATURAL GAS 0.
EXAMPLE: (0—2000 ft altitude using Table 9) Heating value = 1050 Btu/cu ft Specific gravity = 0.62 Therefore: Orifice No. 45 Manifold pressure 3.6-in. wc * Furnace is shipped with No. 45 orifices. In this example all main burner orifices are the correct size and do not need to be changed to obtain the proper input rate.
EXAMPLE: (0—2000 ft altitude) 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 = 7.
I. CHECK PRIMARY LIMIT CONTROL This control shuts off gas control system and energizes air- circulating blower motor if furnace overheats. Recommended method of checking this limit control is to gradually block off return air after furnace has been operating for a period of at least 5 minutes.
CHECKLIST—INSTALLATION LOAD CALCULATION ____________ Heating Load (Btuh) ____________ Cooling Load (Btuh) ____________ Furnace Model Selection COMBUSTION AIR VENT PIPING Termination Location _______.
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© 2003 Bryant Heating & Cooling Systems 7310 W. Morris St. Indianapolis, IN 46231 —48— Printed in U.S.A. 340m4011 Catalog No. 5334-016.
An important point after buying a device Bryant 340MAV (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Bryant 340MAV yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Bryant 340MAV - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Bryant 340MAV you will learn all the available features of the product, as well as information on its operation. The information that you get Bryant 340MAV will certainly help you make a decision on the purchase.
If you already are a holder of Bryant 340MAV, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Bryant 340MAV.
However, one of the most important roles played by the user manual is to help in solving problems with Bryant 340MAV. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Bryant 340MAV along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
