NOTE: Read the entire instruction manual before starting theinstallation.This symbol → indicates a change since the last issue.Table of Contents PageD
2. Inducer Housing Drain Tubea. Remove and discard LOWER (molded) inducer housingdrain tube which was previously connected to conden-sate trap.b. Use
NOTE: A 12-in. minimum horizontal pipe section is recom-mended with short (5 to 8 ft) vent systems. This recommendationis to reduce excessive condensa
b. Remove and discard UPPER (molded) inducer housingdrain tube which was previously connected to conden-sate trap.c. Install cap and clamp on UPPER in
• be provided with ample space for servicing and cleaning.Always comply with minimum fire protection clearancesshown on the furnace clearance-to-combu
CAUTION: Air for combustion must not be contami-nated by halogen compounds, which include fluoride,chloride, bromide, and iodide. These elements are f
2. If combustion air is taken from outdoors through horizontalducts, the openings and ducts MUST have at least 1 sq in.of free area per 2000 Btuh of t
TABLE 1—OPENING DIMENSIONS (IN.)FURNACECASINGWIDTHAPPLICATIONPLENUM OPENING FLOOR OPENINGABCD17-1/2Upflow Applications 16 24-1/8 16-5/8 24-3/4Downflow
1. Position furnace on its back. Locate and drill a 5/16-in.diameter hole in each bottom corner of furnace. (See Fig.19.) Holes in bottom closure pane
DOWNFLOW FURNACESConnect supply-air duct to supply-air opening on furnace. Thesupply-air duct attachment must ONLY be connected to furnacesupply/outle
Factory-supplied washable framed filters are shipped in blowercompartment. Determine location for filter and relocate filterretaining wire if necessar
Check Pressure Switch...41CHECKLIST...
WARNING: Gas valve ON and OFF switch MUST befacing forward or tilted upward. (See Fig. 46.) Failure tofollow this warning could result in property dam
WARNING: Blower access door switch opens 115-vpower to control center. No component operation canoccur. Do not bypass or close switch with panel remov
C. Accessories1. Electronic Air Cleaner (EAC)Two quick-connect terminals marked EAC-1 and EAC-2are provided for EAC connection. (See Fig. 33.) Thesete
WARNING:CARBON MONOXIDE POISONING HAZARDFailure to follow the steps outlined below for each appliance connected to the venting system being placed int
Fig. 32—Wiring DiagramA02271PCBTRANFRSNOTE #11LSPRS(WHEN USED)LGPSFUSED OR CIRCUIT BREAKERDISCONNECT SWITCH (WHEN REQ’D)NOTE #2JBL1L1BLWRTO 115VAC FI
COMBUSTION AIR PIPECAUTION: Combustion air must not be taken frominside a structure that is frequently contaminated byhalogens, which include fluoride
a. Permanently install perforated disk assembly (factory-supplied in loose parts bag) in combustion-air elbowusing RTV or by cementing. (See Fig. 35.)
2. Attach combustion-air inlet pipe.a. Determine location of combustion-air intake pipe con-nection to combustion-air intake housing as shown inFig. 3
CAUTION: When vent pipe is exposed to temperaturesbelow freezing, such as when it passes through anunheated space or when a chimney is used as a racew
→ Table 8—Other than Direct Vent Termination ClearanceA03228AXBVVVVXXAIR SUPPLY INLETVVENT TERMINALAREA WHERE TERMINAL IS NOT PERMITEDABBBBBCDEFJILHMK
Fig. 2—Dimensional DrawingDIMENSIONS (IN.)UNIT SIZE A D E024040 17-1/2 15-7/8 16036040 17-1/2 15-7/8 16024060 17-1/2 15-7/8 16036060 17-1/2 15-7/8 160
WARNING: Vent pipe must be installed and fullyseated against inducer housing internal stop. Clamp mustbe tightened to prevent any condensate leakage.
16. Use appropriate methods to seal openings where vent pipepasses through roof or sidewall.D. Extended Exposed Sidewall PipesSidewall vent pipe termi
Condensate trap MUST be used for all applications.An external trap is not required when connecting the field drain tothis condensate trap.The field dr
Furnace condensate is mildly acidic, typically in the pH range of3.2 to 4.5. Due to corrosive nature of unneutralized condensate, acondensate pH neutr
CAUTION: These furnaces are equipped with a manualreset limit switch in burner box. This switch will openand shut off power to gas valve if an overhea
a. Inducer Prepurge Period- As the inducer motor IDMcomes up to speed, the pressure switch contacts PRSclose, 24 vac power is supplied for a field ins
1. Remove blower access door.2. Disconnect the thermostat R lead from furnace control.3. Manually close blower door switch.4. For approximately 2 sec,
TABLE 9—MODEL 345MAV ORIFICE SIZE AND MANIFOLD PRESSURE FOR CORRECT INPUT(TABULATED DATA BASED ON 20,000 BTUH PER BURNER, DERATED 2% FOR EACH 1000 FT
TABLE 9—MODEL 345MAV ORIFICE SIZE AND MANIFOLD PRESSURE FOR CORRECT INPUT Continued(TABULATED DATA BASED ON 20,000 BTUH PER BURNER, DERATED 2% FOR EAC
TABLE 9—MODEL 345MAV ORIFICE SIZE AND MANIFOLD PRESSURE FOR CORRECT INPUT Continued(TABULATED DATA BASED ON 20,000 BTUH PER BURNER, DERATED 2% FOR EAC
is used to identify unsafe practices which would result in minorpersonal injury or product and property damage. NOTE is used tohighlight suggestions w
CANADAAt installation altitudes from 2000 to 4500 ft, thisfurnace must be derated 5% by an authorized GasConversion Station. To determine correct inpu
WARNING: Disconnect 115-v electrical power beforechanging speed tap. Failure to follow this warning couldresult in personal injury.4. To change blower
3. Turn on 115-v power to furnace.4. Set thermostat to "call for heat" and wait 1 minute. Whenpressure switch is functioning properly, hot s
CHECKLIST—INSTALLATIONLOAD CALCULATION____________ Heating Load (Btuh)____________ Cooling Load (Btuh)____________ Furnace Model SelectionVENT PIPINGT
© 2003 Bryant Heating & Cooling Systems 7310 W. Morris St. Indianapolis, IN 46231—44—Printed in U.S.A. 345m408 Catalog No. 5334-520
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONSCAUTION: Electrostatic discharge can affect electroniccomponents. Take precautions during furnace installatio
II. UPFLOW APPLICATIONSAn upflow furnace application is where furnace blower is locatedbelow combustion and controls section of furnace, and condition
C. Condensate Trap Location (Alternate UpflowOrientation)An alternate location for the condensate trap is the left-hand sideof casing. (See Fig. 2 and
(b.) Clamp tube to prevent any condensate leakage.(2.) Condensate Trap Located on Right Side of Casing(a.) Install drain tube coupling (factory-suppli
2. Use smaller diameter tube (factory-supplied in loose partsbag) to extend collector box pressure tube (green label)which was previously connected to
Kommentare zu diesen Handbüchern