Bryant 393AAV Installation, Start-Up, And Operating Instructions Manual

Bryant 393AAV Installation, Start-Up, And Operating Instructions Manual

A series upflow gas-fired induced-combustion furnaces

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NOTE: Read the entire instruction manual before starting the
installation.
This symbol → indicates a change since the last issue.
Index
SAFETY CONSIDERATIONS .....................................................1
PROCEDURE ...........................................................................2
Dimensional Drawing ..............................................................2
Clearances to Combustible Materials .....................................3
INTRODUCTION ...................................................................3
LOCATION ...........................................................................3-4
General..............................................................................3-4
Location Relative to Cooling Equipment ...........................4
Hazardous Locations ...........................................................4
Unconfined Space................................................................4
Confined Space ................................................................4-5
AIR DUCTS ..........................................................................5-6
General Requirements ......................................................5-6
Ductwork Acoustical Treatment .........................................6
Supply-Air Connections ......................................................6
Return-Air Connections.......................................................6
FILTER ARRANGEMENT .....................................................6
LEVELING LEGS (IF REQUIRED).......................................6
GAS PIPING.............................................................................8
ELECTRICAL CONNECTIONS..........................................8-9
115-v Wiring ....................................................................8-9
24-v Wiring..........................................................................9
Accessories ..........................................................................9
VENTING............................................................................9-10
General...............................................................................10
Sequence Of Operation .....................................................10
Heating Mode ....................................................................10
Cooling Mode ....................................................................10
Continuous Blower Mode .................................................10
Heat Pump Mode...............................................................11
Start-Up Procedures .....................................................11-16
Adjustments .......................................................................12
Set Gas Input Rate ............................................................12
Set Temperature Rise ........................................................15
Set Thermostat Heat Anticipator ......................................16
Check Safety Controls.......................................................16-17
Checklist..................................................................................17
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.
installation, start-up,
and operating instructions
UPFLOW GAS-FIRED
INDUCED-COMBUSTION FURNACES
Page
-1-
Cancels: II 393A-70-2
®
REGISTERED QUALITY SYSTEM
Untrained personnel can perform basic maintenance functions
such as cleaning and replacing air filters. All other operations must
be performed by trained service personnel. 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
54-1996/ANSI Z223.1-1996 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.
393AAV
Series A
II 393A-70-3
7-99
ama
A PP R O VED
R
.

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Summary of Contents for Bryant 393AAV

  • Page 1: Table Of Contents

    393AAV and operating instructions Series A UPFLOW GAS-FIRED INDUCED-COMBUSTION FURNACES Cancels: II 393A-70-2 II 393A-70-3 7-99 NOTE: Read the entire instruction manual before starting the installation. This symbol → indicates a change since the last issue. Index Page SAFETY CONSIDERATIONS .............1...
  • 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: Introduction

    WARNING: Improper installation, adjustment, alter- INTRODUCTION ation, service, maintenance, or use can cause carbon The Model 393AAV, Series A Furnace is available in sizes 66,000 monoxide poisoning, explosion, fire, electrical shock, or through 154,000 Btuh input capacities. other conditions which may cause personal injury or The design of the upflow gas-fired furnace is A.G.A./C.G.A.
  • Page 4: Location Relative To Cooling Equipment

    (such as furnaces, clothes dryer, water unless the damper is in the full-heat or full-cool position. heaters, etc.) in the space. C. Hazardous Locations For Example: 393AAV FURNACE MINIMUM SQ FT WITH INPUT BTUH 7-1/2 FT CEILING 66,000...
  • Page 5: Air Ducts

    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: Ductwork Acoustical Treatment

    →TABLE 2—MINIMUM FREE AREA OF COMBUSTION AIR OPENING* AIR FROM INDOOR OUTDOOR AIR THROUGH OUTDOOR AIR THROUGH OUTDOOR AIR THROUGH 393AAV UNCONFINED SPACE VERTICAL DUCTS HORIZONTAL DUCTS SINGLE DUCT FURNACE Free Area Free Area of Round Free Area of Round...
  • Page 7 ″ ⁄ -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

    the ground joint union be loosened before pressure testing. If a on the left-hand side of the furnace (holes have been pre-drilled in subsequent test pressure exceeds 0.5 psig (14-in. wc), the gas casing). When moved, tuck the wiring harness behind the clip supply pipe must be disconnected from the furnace and capped provided to keep extra wire lengths out of the way.
  • Page 9: Sequence Of Operation

    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: Cooling Mode

    BLOWER OFF DELAY ADJUSTMENT SWITCH 24V THERMOSTAT TERMINALS TEST/TWIN HUMIDIFIER TERMINAL (24-VAC 0.5 AMP MAX) LED OPERATION & STATUS LIGHT HARNESS CONNECTOR SEC-1 24V TRANSFORMER SEC-2 3-AMP FUSE SPARE 1 COOL BLOWER SPEED HEAT SELECTION TERMINALS SPARE 2 EAC 1 (BLACK) EAC-ELECTRONIC AIR CLEANER TERMINALS (115-VAC 1.0 AMP MAX) 115-VAC (L1)
  • Page 11 —11—...
  • Page 12: Heat Pump Mode

    HUM terminal is energized whenever the gas valve is energized. (3.) Verify furnace model. Table 6 can only be used for C. Start-up Procedures model 393AAV Furnaces. 1. Purge gas lines—After all connections have been made, (4.) Find installation altitude in Table 6.
  • Page 13 TABLE 6—MODEL 393AAV 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...
  • Page 14 TABLE 6—MODEL 393AAV 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...
  • Page 15 TABLE 6—MODEL 393AAV 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...
  • Page 16: Set Temperature Rise

    EXAMPLE: (0—2000 ft altitude) ON AND Furnace rating plate input is 110,000 Btuh. OFF SWITCH Btu heating input = Btu/cu ft X cu ft/hr Heating value of gas = 1050 Btu/cu ft PRESSURE Time for 1 revolution of 2-cu ft dial = 70 sec REGULATOR Gas rate = 103 cu ft/hr (from Table 8) ADJUSTMENT...
  • Page 17: Set Thermostat Heat Anticipator

    limit has shut off the burners, the return-air opening should CAUTION: Recheck temperature rise. It must be within be unblocked. By using this method to check the limit the air temperature rise range specified on furnace rating control, it can be established that the limit functions and plate.
  • Page 18 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 available, using popular video-based formats and materials.
  • Page 19 —19—...
  • Page 20 ____________ Pressure Switches ____________ Draft Safeguard Switch ____________ Auxiliary Limit Switch(es) THERMOSTAT ____________ Manufacturer Name ____________ Model Number © 1999 Bryant Heating & Cooling Systems 7310 W. Morris St. Indianapolis, IN 46231 —20— Printed in U.S.A. 393a703 Catalog No. 5339-303...

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