Bryant 312AAV Manual do Utilizador

NOTE: Read the entire instruction manual before starting theinstallation.TABLE OF CONTENTSSafety Considerations...

PLENUMOPENINGCABDFLOOROPENINGA96283Fig. 11– Floor and Plenum Opening DimensionsDOWNFLOWSUBBASESHEET METALPLENUMFLOOROPENINGFURNACE(OR COIL CASINGWHEN

Fig. 14–Duct FlangesA00382NOYESUPFLOW210°MINNOYESDOWNFLOW210°MINNOYESHORIZONTAL210°MINFig. 15–Horizontal Installation Hung from JoistsA96633NOTES:ANGL

WARNING: Use proper length of pipe to avoid stress ongas control manifold. Failure to follow this warning couldresult in a gas leak resulting in fire,

WARNING: The cabinet MUST have an uninterruptedor unbroken ground according to NEC ANSI/NFPA70-1999 and Canadian Electrical Code CSA C22.1 orlocal cod

Two male 1/4–in quick-connect terminals, marked EAC-1and EAC-2 are provided for EAC connection. (See Fig. 22.)These terminals are energized with 115-v

the low-heat and high-heat pressure switch contacts LPSand HPS are open, and starts the inducer motor IDM inhigh-speed.NOTE: The low-heat only switch

b. Igniter Warm-Up- At the end of the prepurge period,the Hot-Surface Igniter HSI is energized for a 17-secondigniter warm-up period.c. Trial-for-Igni

LPS and HPS are open, and starts the inducer motor IDM inhigh-speed.The start up and shut down functions and delays describedin item 1. above apply to

The thermostat closes the R-to-G-and-Y1 circuits forlow-cooling or closes the R-to-G-and-Y1-and-Y2 cir-cuits for high-cooling. The R to Y1 circuit sta

Fig. 23–Furnace Wiring DiagramA00284326351-101 REV. BGVHIMGRN/YELCNOTE #3BRNBLUBRNGRN/YELREDORNRED REDREDREDNOTE #11FRS1 DSSBVSSLS(WHEN USED)FRS2NOTE

Fig. 1–Dimensional DrawingA00264(Optional)(Optional)(Optional)*NOTES: 1. Two additional 7/8-in. dia holes are located in the top plate.2. Minimum retu

furnace control CPU will hold the blower motor BLWM atHI HEAT speed during the selected blower-OFF delayperiod before reverting to continuous-blower s

TABLE 9–MODEL 312AAV GAS ORIFICE SIZE* AND MANIFOLD PRESSURES FOR GAS INPUT(TABULATED DATA BASED ON 22,000 BTUH HIGH-HEAT/14,500 BTUH FOR LOW-HEAT PER

TABLE 9–MODEL 312AAV GAS ORIFICE SIZE* AND MANIFOLD PRESSURES FOR GAS INPUT RATE (CONTINUED)(TABULATED DATA BASED ON 22,000 BTUH HIGH-HEAT/14,500 FOR

NOTE: Component test feature will not operate if any thermostatsignal is present at the control.Component test sequence is as follows:a. Momentarily s

e. Move setup switch LHT to OFF position after complet-ing low-heat adjustment.f. Jumper R and W2 thermostat connections on control.(See Fig. 22.) Thi

NOTE: DO NOT set high-heat manifold pressure less than3.2–in. wc or more than 3.8–in. wc for natural gas. If manifoldpressure is outside this range, c

d. Check and verify orifice size in furnace. NEVER AS-SUME THE ORIFICE SIZE. ALWAYS CHECK ANDVERIFY.e. Turn off all other gas appliances and pilots.f.

Place LHT in ON position. Jumper R to W/W1 and W2 tocheck high-gas-heat temperature rise. To check low-gas-heat temperature rise, remove jumper to W2.

2. Check draft safeguard switch.The purpose of this control is to permit the safe shutdown of thefurnace during certain blocked vent conditions.a. Dis

CHECKLIST—INSTALLATIONLOAD CALCULATION____________ Heating Load (Btuh)____________ Cooling Load (Btuh)____________ Furnace Model SelectionAIR FOR COMB

Fig. 2–Clearances to CombustiblesA00287MINIMUM INCHES CLEARANCE TO COMBUSTIBLE CONSTRUCTIONThis forced air furnace is equipped for use withnatural ga

© 2000 Bryant Heating & Cooling Systems 7310 W. Morris St. Indianapolis, IN 46231—30—Printed in U.S.A. 312a911 Catalog No. 5331-200

CAUTION: Application of this furnace should be in-doors with special attention given to vent sizing andmaterial, gas input rate, air temperature rise,

5. Before removing a new control from it’s container, dis-charge your body’s charge to the ground. If the control is tobe installed in a furnace, foll

other flow control must prevent chilled air from entering thefurnace. If the dampers are manually operated, they must beequipped with means to prevent

per 3000 Btuh of the total input for all equipment withinthe confined space and not less than the sum of the areasof all vent connectors in the confin

DOWNFLOW FURNACESConnect supply-air duct to supply-air opening on furnace. Thesupply-air duct attachment must ONLY be connected to furnacesupply/outle

If Coil Assembly Part No. CD5 or CK5 or Coil Box Part No.KCAKC is used, install as shown in Fig. 13.NOTE: Remove the furnace perforated supply-air duc