Bryant 4-WAY MULTIPOISE FIXED-CAPACITY CONDENSING GAS FURNACE 345MAV manuale d’uso

NOTE: Read the entire instruction manual before performing any service or maintenance. Index Page SAFETY CONSIDERATIONS ..................................................1-2 ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS........2 GENERAL......................................................................................2 CARE AND MAINTENANCE..........[...]

WARNING: Never store anything on, near, or in contact with the furnace, such as: 1. Spray or aerosol cans, rags, brooms, dust mops, vacuum cleaners, or other cleaning tools. 2. Soap powders, bleaches, waxes or other cleaning compounds, plastic or plastic containers, gasoline, kero- sene, cigarette lighter fluid, dry cleaning fluids, or other volati[...]

7. Place filter in furnace. 8. Replace blower access panel and main furnace door. 9. Turn on electrical supply to furnace. NOTE: If the filter has cross-mesh binding, the binding must face the blower. If the filter has an air direction arrow, the arrow must point toward the blower. II. BLOWER MOTOR AND WHEEL MAINTENANCE To ensure long life, economy[...]

CAUTION: Heating speed selection MUST be adjusted to provide proper temperature rise as specified on the rating plate. Failure to adjust the heating speed may shorten heat exchanger life. 14. Turn on electrical supply. Manually close blower access panel door switch. Use a piece of tape to hold switch closed. Check for proper rotation and speed chan[...]

1. Turn off gas and electrical supplies to furnace. 2. Remove main furnace door. 3. Disconnect wires or connectors to rollout switch, gas valve, ignitor, and flame sensor. CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. 4. Disconnect combustion-air intake pipe from i[...]

8. Flush inside of collector box with water until discharge from condensate trap is clean and runs freely. NOTE: Ensure the drain tube disconnected from the inducer housing is higher than the collector box opening or water will flow out tube. 9. Inspect inside area of collector box for any pieces of foreign materials and remove if present. CAUTION:[...]

hydrocarbons or inadequate seal may occur) to inducer housing. (See Fig. 10.) Apply a small bead of G.E. RTV 162, G.E. RTV 6702, or Dow-Corning RTV 738 sealant to groove in collector box. 11. Refer to furnace wiring diagram and connect wires to inducer motor and pressure switch or connectors. 12. Reconnect pressure tubes to pressure switch. See dia[...]

Fig. 11—Field Wiring A98209 115-V FIELD-SUPPLIED DISCONNECT AUXILIARY J-BOX CONTROL BOX 24-V TERMINAL BLOCK THREE-WIRE HEATING- ONLY FIVE WIRE NOTE 1 NOTE 2 FIELD-SUPPLIED DISCONNECT CONDENSING UNIT TWO WIRE FURNACE R G C WC R GY GND GND FIELD 24-V WIRING FIELD 115-, 208/230-, 460-V WIRING FACTORY 24-V WIRING FACTORY 115-V WIRING 208/230- OR 460-[...]

The control center stores 1 fault code (the last fault to occur) for a period of 48 hrs or until the 115- or 24-v power is interrupted. NOTE: Removing blower access panel will open blower access panel door switch and terminate 115-v power to control center, and fault code will be erased. Look into blower access panel sight glass for current LED sta[...]

2. Check for discolored heat tape insulation. If any damage or discolored insulation is evident, replace heat tape. 3. Check that heat tape power supply circuit is on. X. WINTERIZING CAUTION: Freezing condensate left in the furnace will damage the equipment. If the furnace will be off for an extended period of time in a structure where the temperat[...]

PCB BLOWER OFF DELAY SELECTION CHART 90 SEC 135 SE C 180 SE C 225 SE C GVR HI / L O RE LA Y SEC-1 SEC-2 WHT PL1 32 1 6 5 4 9 87 LED TEST/TWIN BLOWER OFF DEL AY G R Y W C HUM H S IR ID R B L W R BLOWER SPEED SELECT FU1 COOL HEAT L2 PL3 PL2 VAC 120 L1 PR1 1 2 1 2 3 PR2 24 V A C -3A FUSE SPARE-2 SPARE-1 EAC-1 EAC-2 C 1.5 AMP 12 PL5 WHT BRN GR N BLK ID[...]

→ Fig. 16—Service Label A99107 SER VICE COMP ON ENT TE ST To in iti a te th e co m po n ent test se que nc e, sh u t OF F th e r oom the rm o st at o r disconnect t he "R" t hermostat lead. Brie fly short the TEST ter minal to t he "Com 24V " ter mi nal . S tat us L ED wi ll fl ash code an d th en t urn O N t he in du cer m [...]

Is circuit breaker closed? Close door switch and go to start. Is red LED status light on? Is door switch closed? Is red LED status light blinking rapidly without a pause? Is there 1 15v going to switch? Replace door switch. Replace control center . Replace transformer . Is red LED status light blinking ON/OFF slowly with a combination of short and [...]

11 NO PREVIOUS F A UL T - Faults are erased after 48 hrs or whenever power (1 15v or 24v) is interrupted. Run system through a heating or cooling cycle to check system. 12 BLO WER ON AFTER PO WER UP (115V OR 24V) - Normal operation. Blower will run for 90 sec when furnace power is interrupted during a call for heat, R-W closed. 13 LIMIT OR FLAME RO[...]

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A94328 SERVICE TRAINING Packaged Service Training programs are an excellent way to increase your knowledge of the equipment discussed in this manual, including:  • Unit Familiarization • Maintenance  • Installation Overview • Operating Sequence A large selection of product, theory, and skills programs is availa[...]