Bryant 395CAV Series Installation, Start-Up, And Operating Instructions Manual
Bryant 395CAV Series Installation, Start-Up, And Operating Instructions Manual

Bryant 395CAV Series Installation, Start-Up, And Operating Instructions Manual

Upflow gas-fired induced-combustion furnaces

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SAFETY CONSIDERATIONS .....................................................1
PROCEDURE........................................................................2-3
Dimensional Drawing ...............................................................2
Clearances From Combustible Materials .................................3
INTRODUCTION.....................................................................3
LOCATION ..............................................................................4
General.................................................................................4
Location Relative to Cooling Equipment ...........................4
Hazardous Locations ...........................................................4
Unconfined Space................................................................4
Confined Space ................................................................5-6
AIR DUCTS ..........................................................................6-7
General Requirements .........................................................6
Ductwork Acoustical Treatment .........................................6
Supply-Air Connections ......................................................6
Return-Air Connections.......................................................6
FILTER ARRANGEMENT .....................................................6
LEVELING LEGS (IF REQUIRED).......................................7
GAS PIPING .........................................................................7-8
ELECTRICAL CONNECTIONS.............................................8
115-v Wiring........................................................................8
24-v Wiring..........................................................................8
Accessories ..........................................................................8
VENTING..............................................................................8-9
General.................................................................................9
Sequence Of Operation ................................................12-15
Heating Mode ....................................................................12
Cooling Mode...............................................................12-15
Continuous Blower Mode .................................................15
Thermostat....................................................................15
Heat Pump Mode...............................................................15
Start-Up Procedures...........................................................15
Adjustments ..................................................................15-20
Set Gas Input Rate .......................................................15-19
Set Temperature Rise...................................................19-20
Set Thermostat Heat Anticipator ......................................20
Check Safety Controls ............................................................20
Checklist..................................................................................20
SAFETY CONSIDERATIONS
Installing and servicing heating equipment can be hazardous due to
gas and electrical components. Only trained and qualified person-
nel should install, repair, or service heating equipment.
Untrained personnel can perform basic maintenance functions
such as cleaning and replacing air filters. All other operations must
be performed by trained service personnel.
installation, start-up,
and operating instructions
UPFLOW GAS-FIRED
INDUCED-COMBUSTION FURNACES
Page
-1-
Cancels: New
REGISTERED QUALITY SYSTEM
When working on heating equipment, observe precautions in the
literature, on tags, and on labels attached to or shipped with the
unit and other safety precautions that may apply.
Follow all safety codes. In the United States, follow all safety
codes including the National Fuel Gas Code (NFGC) NFPA
54-1999/ANSI Z223.1-1999 and the Installation Standards, Warm
Air Heating and Air Conditioning Systems (NFPA 90B)
ANSI/NFPA 90B.
In Canada, refer to CAN/CGA-B149.1- and .2-M95 National
Standard of Canada, Natural Gas and Propane Installation Codes
(NSCNGPIC).
These instructions cover minimum requirements and conform to
existing national standards and safety codes. In some instances,
these instructions exceed certain local codes and ordinances,
especially those that may not have kept up with changing residen-
tial construction practices. We require these instructions as a
minimum for a safe installation.
Wear safety glasses and work gloves. Have fire extinguisher
available during start-up and adjustment procedures and service
calls.
Recognize safety information. This is the safety-alert symbol
When you see this symbol on the furnace and in instructions or
manuals, be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING, CAUTION,
and NOTE. These words are used with the safety-alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies a hazard
which could result in personal injury or death. CAUTION is used
to identify unsafe practices which would result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability,
or operation.
395CAV
Series G
LIMITED
II 395C-40-14
1-00
ama
CERTIFIED
.

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Summary of Contents for Bryant 395CAV Series

  • Page 1: Table Of Contents

    installation, start-up, 395CAV and operating instructions Series G LIMITED UPFLOW GAS-FIRED INDUCED-COMBUSTION FURNACES Cancels: New II 395C-40-14 1-00 NOTE: Read the entire instruction manual before starting the installation. Index Page SAFETY CONSIDERATIONS .............1 ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS PROCEDURE................2-3 Dimensional Drawing ...............2 Clearances From Combustible Materials .........3 CERTIFIED INTRODUCTION..............3...
  • Page 2: Electrostatic Discharge (Esd) Precautions Procedure

    AIRFLOW ″ ⁄ ″ ⁄ 19″ ″ ⁄ ″ ⁄ VENT CONN ″ 1″ OUTLET 1″ ⁄ ⁄ -IN. DIA ⁄ -IN. DIA HOLE ″ ″ ⁄ POWER ENTRY ⁄ POWER ENTRY ″ ⁄ ⁄ -IN. DIA ″ ⁄ -IN. DIA ⁄...
  • Page 3: Clearances From Combustible Materials

    MINIMUM INCHES CLEARANCE TO COMBUSTIBLE CONSTRUCTION This forced air furn ace is equipped for use with This furnace is approved for UPFLOW installations only. atural gas at altitudes 0 - 10,000 ft (0-3,050m). An accessory kit, supplied by the m anufacturer, 1"...
  • Page 4: Location

    For accessory installation details, refer to the applicable instruction literature. NOTE: Remove all shipping brackets and materials before operating the furnace. I. LOCATION A. General CAUTION: Do not install furnace in a corrosive or contaminated atmosphere. Make sure all combustion and circulating air requirements are met, in addition to all local codes and ordinances.
  • Page 5: Confined Space

    1 SQ IN. PER 4000 DUCTS BTUH* SUPPLY OUTDOORS VENT THROUGH ROOF 12″ MAX 12″ 1 SQ IN. VENT PER 2000 THROUGH 12″ MAX BTUH* SUPPLY ROOF 1 SQ IN. 1 SQ IN. 4000 PER 1000 BTUH* BTUH * IN DOOR OR WALL DUCTS UNCONFINED...
  • Page 6: Air Ducts

    TABLE 2—MINIMUM FREE AREA OF COMBUSTION AIR OPENING* AIR FROM INDOOR OUTDOOR AIR THROUGH OUTDOOR AIR THROUGH OUTDOOR AIR THROUGH 395CAV UNCONFINED SPACE VERTICAL DUCTS HORIZONTAL DUCTS SINGLE DUCT FURNACE Free Area Free Area of Round Free Area of Round Free Area of Round INPUT...
  • Page 7: Leveling Legs (If Required)

    ″ ⁄ -IN. WIDE ⁄ ⁄ -IN. WIDE CASINGS ONLY: CASINGS ONLY: CUT AND FOLD INSTALL FIELD-SUPPLIED FACTORY-PROVIDED ″ FILTER FILLER STRIP FILTERS AS SHOWN ⁄ UNDER FILTER. TO DESIRED SIZE. ″ ⁄ 3 ″ ″ ″ ⁄ 1 ″ ″...
  • Page 8: Electrical Connections

    TABLE 4—MAXIMUM CAPACITY OF PIPE* CAUTION: Do not connect aluminum wire between NOMINAL IRON INTERNAL LENGTH OF PIPE (FT) disconnect switch and furnace. Use only copper wire. PIPE SIZE DIAMETER (IN.) (IN.) 0.622 Make all electrical connections in accordance with the National 0.824 170 151 Electrical Code (NEC) ANSI/NFPA 70-1999 and local codes or...
  • Page 9: Start-Up, Adjustment, And Safety Check

    FIELD 24-V WIRING FIELD 115-, 208/230-, 460-V WIRING FACTORY 24-V WIRING FACTORY 115-V WIRING NOTE 2 THERMOSTAT FIVE WIRE FIELD-SUPPLIED TERMINALS DISCONNECT THREE-WIRE HEATING-ONLY 208/230- OR BLOWER DOOR SWITCH 460-V THREE PHASE 208/230-V SINGLE PHASE AUXILIARY 115-V FIELD- J-BOX SUPPLIED NOTE 1 DISCONNECT CONDENSING...
  • Page 10 FURNACE 1-SPEED CONTROL THERMIDISTAT AIR CONDITIONER O/W2 Y1/W2 HEAT STAGE 1 W/W1 Y/Y2 Y/Y2 COOL STAGE 1 24 VAC HOT DHUM DHUM DEHUMIDIFY 24 VAC COMM HUMIDIFIER HUMIDIFY (24 VAC) OUTDOOR SENSOR OUTDOOR SENSOR CONNECTION See notes 5, 7, and 10 A99435 Fig.
  • Page 11 FURNACE 1-SPEED THERMIDISTAT CONTROL HEAT PUMP RVS COOLING O/W2 Y1/W2 HEAT STAGE 2 W/W1 (FURNACE) Y/Y2 HEAT/COOL STAGE 1 Y/Y2 (COMPRESSOR) 24 VAC HOT DHUM DHUM DEHUMIDIFY 24 VAC COMM HUMIDIFIER HUMIDIFY (24 VAC) OUTDOOR SENSOR OUTDOOR SENSOR CONNECTION See notes 1, 4, 6, 7, 9, and 10. A99437 Fig.
  • Page 12: Sequence Of Operation

    2-SPEED TWO-STAGE FURNACE AIR CONDITIONER CONTROL OR HEAT PUMP THERMOSTAT Heat Pump only Heat Pump only Y/Y2 DHUM HUMIDIFIER (24 VAC) See notes 1, 2, and 9. A99439 Fig. 14—Single-Stage Furnace with 2-Speed Outdoor Unit Notes: 1. Heat pump must have a high pressure switch for dual fuel applications. 2.
  • Page 13 BLOWER OFF DELAY JUMPER SELECT 24-V THERMOSTAT TERMINALS TEST/TWIN HUMIDIFIER TERMINAL HARNESS CONNECTOR (24-VAC 0.5 AMP MAX) 3-AMP FUSE SEC-1 24-V TRANSFORMER SEC-2 LED OPERATION & DIAGNOSTIC LIGHT EAC-2 115-VAC (L2) NEUTRAL CONNECTION COOL HOT SURFACE IGNITOR CONNECTOR HEAT INDUCER MOTOR CONNECTOR BLOWER SPEED SPARE-1...
  • Page 14 —14—...
  • Page 15: Continuous Blower Mode

    3. Continous blower mode WARNING: Never purge a line into a combustion NOTE: EAC-1 terminal is energized with 115v whenever blower chamber. Never use matches, candles, flame, or other operates. sources of ignition for the purpose of checking leakage. Use a soap-and-water solution to check for leakage. When the R-G circuit is made, the blower motor operates on Failure to follow this warning can cause fire, explosion, FAN speed.
  • Page 16 TABLE 6—MODEL 395CAV ORIFICE SIZE* AND MANIFOLD PRESSURE FOR CORRECT INPUT (Tabulated Data Based on 22,000 Btuh per Burner, Derated 4 Percent per 1000 Ft Above Sea Level) SPECIFIC GRAVITY OF NATURAL GAS AVG GAS ALTITUDE HEAT VALUE 0.58 0.60 0.62 0.64 0.66...
  • Page 17 TABLE 6—MODEL 395CAV ORIFICE SIZE* AND MANIFOLD PRESSURE FOR CORRECT INPUT (Continued) (Tabulated Data Based on 22,000 Btuh per Burner, Derated 4 Percent per 1000 Ft Above Sea Level) SPECIFIC GRAVITY OF NATURAL GAS AVG GAS ALTITUDE HEAT VALUE 0.58 0.60 0.62 0.64...
  • Page 18 TABLE 6—MODEL 395CAV ORIFICE SIZE* AND MANIFOLD PRESSURE FOR CORRECT INPUT (Continued) (Tabulated Data Based on 22,000 Btuh per Burner, Derated 4 Percent per 1000 Ft Above Sea Level) SPECIFIC GRAVITY OF NATURAL GAS AVG GAS ALTITUDE HEAT VALUE 0.58 0.60 0.62 0.64...
  • Page 19: Set Temperature Rise

    BURNER FLAME EXAMPLE: BURNER 88,000 Btuh input furnace installed at 4300 ft. Furnace Input Derate Furnace Input Rate Rate at Multiplier at Installation Altitude Sea Level Factor 72,160 88,000 0.82 CANADA At installation altitudes from 2000 to 4500 ft, this furnace must be derated 10 percent by an authorized Gas Conversion Station.
  • Page 20: Set Thermostat Heat Anticipator

    THERMOSTAT SUBBASE WARNING: Disconnect the electrical power before TERMINALS WITH changing the speed tap. A failure to follow this warning THERMOSTAT REMOVED can cause personal injury. (ANITICIPATOR, CLOCK, ETC., MUST BE OUT OF CIRCUIT.) HOOK-AROUND AMMETER d. To change blower motor speed selections for heating mode, remove blower motor lead from control HEAT terminal.
  • Page 21 CHECKLIST—INSTALLATION LOAD CALCULATION ____________ Heating Load (Btuh) ____________ Cooling Load (Btuh) ____________ Furnace Model Selection AIR FOR COMBUSTION AND VENTILATION ____________ Unconfined Space ____________ Confined Space VENTING ____________ NFGC (United States) ____________ NSCNGPIC (Canada) ____________ Local Codes ____________ 1/4-in. Upward Slope ____________ Joints Secure ____________...
  • Page 22 —22—...
  • Page 23 —23—...
  • Page 24 Course descriptions and schedules are in our catalog. CALL FOR FREE CATALOG 1-800-962-9212 [ ] Packaged Service Training [ ] Classroom Service Training A94328 © 2000 Bryant Heating & Cooling Systems 7310 W. Morris St. Indianapolis, IN 46231 —24— Printed in U.S.A. 395c4014 Catalog No. 5339-502...

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