Bryant 355MAV - Manuals - manualsarea.com

Page 2 - SAFETY CONSIDERATIONS; Application of this furnace should be in-

Check Primary Limit Control.................................................45Check Pressure Switch ......................................................45-46 CHECKLIST ................................................................................46 SAFETY CONSIDERATIONS CAUTION: Application of t...

Page 3 - UNIT

Fig. 2 — Dimensional Drawing DIMENSIONS (IN.) UNIT SIZE A D E 042040* 24-1/2* 22-7/8* 23* 042060 17-1/2 15-7/8 16 042080 21 19-3/8 19-1/2 060080 21 19-3/8 19-1/2 060100 21 19-3/8 19-1/2 060120 24-1/2 22-7/8 23 * These dimensions reflect the wider casing for the Trophy (96.6 percent AFUE) furnace. A9...

Page 4 - Fig. 3—Clearances to Combustibles; MINIMUM INCHES CLEARANCE TO COMBUSTIBLE CONSTRUCTION; HORIZONTAL POSIT IONS:; INSTALLATION; Fig. 5—Installation in a Garage; TO BURNERS

These furnaces are shipped with the following materials to assist inproper furnace installation. These materials are shipped in the mainblower compartment. Installer Packet includes: Installation, Start-Up, and Operating InstructionsService and Maintenance Procedures User’s Information ManualWarrant...

Page 11 - NOTE: LOCAL CODES MAY REQUIRE A DRAIN PAN UNDER THE

CAUTION: The condensate trap MUST be installed below furnace. See Fig. 6 for dimensions. The drainconnection to condensate trap must also be properlysloped to an open drain. NOTE: Combustion-air and vent pipes are restricted to a mini- mum length of 5 ft. (See Table 7.) NOTE: A 12-in. minimum offset...

Page 13 - Do not operate this furnace during con-; Do not install furnace on its back. Safety

LOCATION I. GENERAL This furnace must • be installed so the electrical components are protected fromwater. • not be installed directly on any combustible material other thanwood flooring (refer to SAFETY CONSIDERATIONS). • be located so combustion-air and vent pipe maximum lengthsare not exceeded. R...

Page 15 - Assembly or Coil Box Installed

TABLE 1—OPENING DIMENSIONS (IN.) FURNACE CASING WIDTH APPLICATION PLENUM OPENING FLOOR OPENING A B C D 17-1/2 Upflow Applications 16 24-1/8 16-5/8 24-3/4 Downflow Applications on Non-Combustible Flooring 15-7/8 19 16-1/2 19-5/8 Downflow Applications on Combustible Flooring Using KGASB Subbase Furnac...

Page 16 - The entire length of furnace MUST be; AIR DUCTS; YES; Fig. 23—Crawlspace Horizontal Application; DRAIN; REQD PER ROD

be suspended from each corner by hanger bolts and angle ironsupports. (See Fig. 23.) Cut hanger bolts (4 each 3/8-in. all-threadrod) to desired length. Use 1 X 3/8-in. flat washers, 3/8-in.lockwashers, and 3/8-in. nuts on hanger rods as shown in Fig. 23.Dimples are provided for hole locations. (See ...

Page 17 - AIR FILTER LOCATED IN BLOWER COMPARTMENT; Filter Type

Secure ductwork with proper fasteners for type of ductwork used.Seal supply- and return-duct connections to furnace with codeapproved tape or duct sealer.Flexible connections should be used between ductwork andfurnace to prevent transmission of vibration. Ductwork passingthrough unconditioned space ...

Page 18 - WASHABLE; Fig. 25—Bottom Filter Arrangement

To remove bottom closure panel, perform following: 1. Tilt or raise furnace and remove 2 screws holding front filler panel. (See Fig. 26.) 2. Rotate front filler panel downward to release holding tabs. 3. Remove bottom closure panel. 4. Reinstall front filler panel and screws. G. Gas Piping Gas pipi...

Page 19 - UNION

WARNING: Use proper length of pipe to avoid stress on gas control manifold. Failure to follow this warning couldresult in a gas leak resulting in fire, explosion, personalinjury, or death. Install a sediment trap in riser leading to furnace. Trap can beinstalled by connecting a tee to riser leading ...

Page 20 - ACCESSORIES; Do not connect aluminum wire between; Fig. 29—Disconnect Switch and Furnace

II. 24-V WIRING Make field 24-v thermostat connections at 24-v terminal block onfurnace control. Y wire from thermostat MUST be connected toY/Y2 terminal on furnace control, as shown in Fig. 28, for proper cooling operation. The 24-v terminal block is marked for easyconnection of field wiring. (See ...

Page 21 - DIRECT VENTING; ALTERNATE

2. Humidifier (HUM) Connect an accessory 24 VAC, 0.5 amp maximum humidi-fier (if used) to the 1/4-in. male quick-connect HUMterminal and C OM -24V screw terminal on the control board thermostat strip. The HUM terminal is energized whenblower is energized in heating. (See Fig. 32.) WARNING: DO NOT co...

Page 23 - Fig. 32—Control Center; ASTM SPECIFICATION

→ Fig. 32—Control Center A02278 FLASH UPGRADE CONNECTOR (FACTORY ONLY) ACRDJ – AIR CONDITIONING RELAY DISABLE JUMPER HUMIDIFIER TERMINAL (24-VAC 0.5 AMP MAX. CONTINUOUS FAN (CF) AIRFLOW SETUP SWITCHES COMMUNICATION CONNECTOR AIR CONDITIONING (A/C) AIRFLOW SETUP SWITCHES MODEL PLUG CONNECTOR SW1 SETU...

Page 24 - TABLE 6—COMBUSTION-AIR AND VENT PIPE; LOCATION; Canada; Dryer/Water heater vent; See Note 5 See Note 5; From plumbing vent stack; See Note 4 See Note 6; Fig. 33—Combustion-Air and Vent Pipe Diameter; FURNACE; Fig. 34—Combustion-Air and Vent Pipe Connections

Furnace combustion-air and vent pipe connections must be at-tached as shown in Fig. 34. Combustion-air intake plug fitting andinducer housing alternate vent cap may need to be relocated insome applications. CAUTION: When combustion-air pipe is installed above a suspended ceiling, pipe must be insula...

Page 25 - Combustion-Air and Vent Pipe Diameter; Determine combustion-air and vent pipe diameter.; Combustion-Air and Vent Pipe Attachment; All pipe joints must be cemented except attachment of

NOTE: The minimum combustion-air and vent pipe length (each) for these furnaces is 5 ft. Short pipe lengths (5-8 ft) may dischargewater droplets. These droplets may be undesirable, and a 12-in.minimum offset pipe section is recommended, as shown in Fig. 35,to reduce excessive droplets from exiting v...

Page 26 - TABLE 7—MAXIMUM ALLOWABLE PIPE LENGTH (FT)

TABLE 7—MAXIMUM ALLOWABLE PIPE LENGTH (FT) ALTITUDE UNIT SIZE TERMINATION TYPE PIPE DIAMETER (IN.)* NUMBER OF 90° ELBOWS 1 2 3 4 5 6 0 to 2000 042040 2 Pipe or 2-In. Concentric 1-1/2 50 45 40 35 30 25 2 70 70 70 70 70 70 042060 2 Pipe or 2-In. Concentric 1-1/2 50 45 40 35 30 25 2 70 70 70 70 70 70 0...

Page 28 - Fig. 36—Air Intake Housing Plug Fitting Drain; TRAP

a. Determine location of combustion-air intake pipe con- nection to combustion-air intake housing as shown inFig. 34 for application. b. Reposition combustion-air intake housing plug fitting in appropriate unused intake housing connection. c. Insert perforated disk assembly (factory supplied) in int...

Page 30 - VENT; Fig. 41—Sidewall Termination of Less than 12 in.

Fig. 40—Sidewall Termination of 12 in. or More A87225 MAINTAIN 12 IN.CLEARANCEABOVE HIGHESTANTICIPATED SNOWLEVEL OR GRADE,WHICHEVER ISGREATER. 90 ° VENT 12 IN. SEPARATIONBETWEEN BOTTOM OFCOMBUSTION AIR ANDBOTTOM OF VENT BRACKET COMBUSTION-AIR 12 ″ MINIMUM OVERHANG OR ROOF Fig. 38—Concentric Vent and...

Page 33 - Inducer Prepurge Period-The furnace control CPU turns; Unit must not be installed, operated, and; Fig. 47—Freeze Protection

thermostat is still calling for gas heating. The amber LED light willflash code 12 during the 90-second period, after which the LEDwill be ON continuous, as long as no faults are detected. After the90-second period, the furnace will respond to the thermostatnormally. The blower door must be installe...

Page 34 - See Fig. 56 for thermostat connections; COOLING MODE; The thermostat “calls for cooling”

low-heat pressure switch LPS closes. When the high-heat pressureswitch closes, inducer motor RPM is noted by the furnace controlCPU before the 25-sec prepurge period begins. The RPM is usedto evaluate vent system resistance. This evaluation is then used todetermine the required RPM necessary to oper...

Page 38 - See note 2

To set the desired cooling airflow: 1. Remove main furnace door and blower access door. 2. Locate A/C setup switches on frunace control. (See Fig. 32.) 3. Determine air conditioning tonnage used. 4. Use Fig. 58 or wiring schematic to determine proper setup position of A/C switches. (See Fig. 31 and ...

Page 40 - Fig. 58—A/C or CF Airflow Selection Chart

e. Find closest natural gas heat value and specific gravity in Table 11. f. Follow heat value and specific gravity lines to point of intersection to find orifice size and low- and high-heatmanifold pressure settings for proper operation. EXAMPLE: (0—2000 ft altitude)Heating value = 1050 Btu/cu ftSpe...

Page 41 - Fig. 59—Example of Setup Switch in OFF Position; OFF; TABLE 9—FURNACE SETUP SWITCH DESCRIPTION; DESIRED HEATING

g. Jumper R and W/W1 and W2 thermostat connections on furnace control. (See Fig. 32.) This keeps furnace lockedin high-heat operation. h. Turn high-heat adjusting screw (3/32 hex Allen wrench) counterclockwise (out) to decrease input rate or clock-wise (in) to increase rate. NOTE: DO NOT set high-he...

Page 43 - TABLE 11 - ORIFICE SIZE* AND MANIFOLD PRESSURES FOR GAS INPUT RATE

AVG. GAS SPECIFIC GRAVITY OF NATURAL GAS HEAT VALUE 0.58 0.60 0.62 0.64 AT ALTITUDE Orifice Mnfld Press Orifice Mnfld Press Orifice Mnfld Press Orifice Mnfld Press (Btu/cu ft) No. High/Low No. High/Low No. High/Low No. High/Low 900 43 3.5 / 1.5 43 3.6 / 1.5 43 3.8 / 1.6 42 3.2 / 1.3 925 44 3.8 / 1.6...

Page 44 - Onl

AVG. GAS SPECIFIC GRAVITY OF NATURAL GAS HEAT VALUE 0.58 0.60 0.62 0.64 AT ALTITUDE Orifice Mnfld Press Orifice Mnfld Press Orifice Mnfld Press Orifice Mnfld Press (Btu/cu ft) No. High/Low No. High/Low No. High/Low No. High/Low TABLE 11 - ORIFICE SIZE* AND MANIFOLD PRESSURES FOR GAS INPUT RATE (TABU...

Page 45 - Fig. 63—Burner Orifice; ALTITUDE

Fig. 65 illustrates an easy method of obtaining thermostat ampdraw measurements. The amp reading should be taken after blowermotor has started and furnace is operating in low-heat. 1. To operate furnace in low-heat, turn setup switch SW1-2 to ON position (See Fig. 32) and connect ammeter leadsacross...

Page 47 - CHECKLIST—INSTALLATION

CHECKLIST—INSTALLATION LOAD CALCULATION ____________ Heating Load (Btuh) ____________ Cooling Load (Btuh) ____________ Furnace Model Selection COMBUSTION AND VENT PIPING Termination Location ________ Roof or Sidewall ________ Termination Kit — 2 Pipe or Concentric ________ Combustion-Air Pipe Length...