Table of Contents
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NOTE: Read the entire instruction manual before starting the
installation.
This symbol → indicates a change since the last issue.
SAFETY CONSIDERATIONS .....................................................1
INTRODUCTION ..........................................................................1
CODES AND STANDARDS........................................................2
LOCATION....................................................................................4
General ......................................................................................4
Location Relative to Cooling Equipment ................................4
Hazardous Locations.................................................................4
Unconfined Space .....................................................................4
Confined Space .........................................................................5
INSTALLATION ...........................................................................5
Air Ducts...................................................................................5
Filter Arrangement....................................................................6
Leveling Legs (If Required).....................................................7
Gas Piping.................................................................................8
Electrical Connections ..............................................................9
Accessories................................................................................9
Venting ......................................................................................9
START-UP PROCEDURES..........................................................9
General ......................................................................................9
Sequence of Operation............................................................11
Start-Up Procedures ................................................................11
Adjustments.............................................................................13
Check Safety Controls ............................................................18
Checklist..................................................................................18
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. When working on
heating equipment, observe precautions in the literature, on tags,
and on labels attached to or shipped with 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 the 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.
installation, start-up, and
operating instructions
UPFLOW GAS-FIRED
INDUCED-COMBUSTION FURNACES
-1-
Cancels: II 395C-40-13
REGISTERED QUALITY SYSTEM
Wear safety glasses and work gloves. Have a 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
INTRODUCTION
The Model 395CAV, Series H and J Furnaces are available in sizes
44,000 through 154,000 Btuh input capacities.
The design of the upflow gas-fired furnace is C.S.A. (A.G.A. and
C.G.A.) certified for natural and propane gas and for installation
on combustible flooring, in alcoves, attics, basements, closets, or
utility rooms. The furnace is factory-shipped for use with natural
gas. A factory accessory gas conversion kit, as listed on the
furnace rating plate is required to convert furnace for use with
propane gas. The design of this furnace line is not C.S.A. (A.G.A.
and C.G.A.) certified for installation in mobile homes, recreation
vehicles, or outdoors.
CAUTION: Application of this furnace should be in-
doors with special attention given to vent sizing and
material, gas input rate, air temperature rise, and unit
sizing. Improper installation or misapplication of the
furnace can require excessive servicing or cause prema-
ture component failure.
This furnace is designed for a minimum continuous return-air
temperature of 60°F db or an intermittent operation down to 55°F
db such as when used with a night setback thermostat. Return-air
temperature must not exceed a maximum of 85°F db.
395CAV
Series H&J
II 395C-40-15
10-00
EFFICIENCY
RATING
CERTIFIED
CERTIFIED
®
.
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Summary of Contents for Bryant 395CAV J Series
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Page 1: Table Of Contents
installation, start-up, and 395CAV operating instructions Series H&J UPFLOW GAS-FIRED INDUCED-COMBUSTION FURNACES Cancels: II 395C-40-13 II 395C-40-15 10-00 NOTE: Read the entire instruction manual before starting the EFFICIENCY installation. RATING This symbol → indicates a change since the last issue. CERTIFIED TABLE OF CONTENTS SAFETY CONSIDERATIONS .............1... -
Page 2: Codes And Standards
WARNING: Improper installation, adjustment, alter- ation, service, maintenance, or use can cause carbon monoxide poisoning, explosion, fire, electrical shock, or other conditions which may cause personal injury or property damage. Consult a qualified installer, service agency, local gas supplier, or your distributor or branch for information or assistance. -
Page 3: Electrostatic Discharge (Esd) Precautions
codes, installation must comply with NFGC in the United States 2. Firmly touch a clean, unpainted, metal surface of the and the NSCNGPIC and all authorities having jurisdiction in furnace chassis which is close to the control. Tools held in Canada. -
Page 4: Location
7. An ESD service kit (available from commercial sources) may also be used to prevent ESD damage. LOCATION I. 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
When ducts are used, they must be of the same cross-sectional area 395CAV FURNACE MINIMUM SQ FT WITH as the free area of the openings to which they connect. The INPUT BTUH 7-1/2 FT CEILING minimum dimension of ducts must not be less than 3 in. (See Fig. 44,000 66,000 88,000... -
Page 6: Filter Arrangement
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... -
Page 7: Leveling Legs (If Required)
bottom return application. See Table 3 to determine correct filter → CAUTION: Use care, when cutting support rods in size for desired filter location. Table 3 indicates filter size, filters, to protect against flying pieces and sharp rod ends. location, and quantity shipped with the furnace. Wear safety glasses, gloves, and appropriate protective For bottom air-return applications, filter may need to be cut to fit clothing. -
Page 8: Gas Piping
2. Install nut on bolt and install bolt and nut in hole. (Install CAUTION: Connect the gas pipe to the furnace using a flat washer if desired.) backup wrench to avoid damaging gas controls. 3. Install another nut on other side of furnace base. (Install flat washer if desired.) 4. -
Page 9: Electrical Connections
TABLE 5—ELECTRICAL DATA OPERATING VOLTS— MAXIMUM MINIMUM MAXIMUM UNIT MAXIMUM VOLTAGE RANGE HERTZ— UNIT WIRE FUSE OR CKT BKR SIZE WIRE LENGTH (FT)‡ PHASE AMPS GAGE AMPS† Maximum* Minimum* 045-08 115–60–1 045-12 115–60–1 070-08 115–60–1 070-12 115–60–1 091-14 115–60–1 091-16 115–60–1 10.4 111-12... - Page 10 FIELD 24-V WIRING FIELD 115-, 208/230-, 460-V WIRING FACTORY 24-V WIRING FACTORY 115-V WIRING NOTE 2 THERMOSTAT FIVE FIELD-SUPPLIED TERMINALS WIRE DISCONNECT THREE-WIRE 208/230- OR HEATING- 460-V ONLY THREE PHASE 208/230-V SINGLE PHASE AUXILIARY 115-V J-BOX FIELD-SUPPLIED NOTE 1 CONTROL DISCONNECT CONDENSING UNIT...
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Page 11: Sequence Of Operation
h. Post-purge—The inducer motor remains energized 5 sec CAUTION: This furnace is equipped with a manual after the burners are extinguished. If jumper is on pin 6 reset limit switch or fuse link in the gas control area. The and pin 9, the post-purge period is 15 sec. switch or fuse link opens and shuts off power to the gas valve if a flame rollout or overheating condition occurs in 2. - Page 12 SCHEMATIC DIAGRAM (WHEN USED) (WHEN USED) TO 115VAC FIELD DISCONNECT NOTE #14 NOTE #11 (WHEN USED) (NATURAL GAS & PROPANE) BLOWER BVSS LGPS NOTE #9 NOTE #4 EQUIPMENT GROUND DELAY (NOT ON ALL MODELS) BLOWER OFF DELAY SPARE-2 MED LO SELECTION CHART HEAT MED HI...
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Page 13: Adjustments
(1.) Obtain average yearly gas heat value (at installed WARNING: Never purge a line into a combustion altitude) from local gas supplier. chamber. Never use matches, candles, flame, or other (2.) Obtain average yearly gas specific gravity from sources of ignition for the purpose of checking leakage. local gas supplier. - Page 14 TABLE 6—MODEL 395CAV ORIFICE SIZE* AND MANIFOLD PRESSURE FOR CORRECT INPUT (TABULATED DATA BASED ON 22,000 BTUH PER BURNER, DERATED 4 PERCENT FOR EACH 1000 FT ABOVE SEA LEVEL) SPECIFIC GRAVITY OF NATURAL GAS ALTITUDE AVG GAS 0.58 0.60 0.62 0.64 0.66 RANGE...
- Page 15 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 FOR EACH 1000 FT ABOVE SEA LEVEL) SPECIFIC GRAVITY OF NATURAL GAS AVG GAS ALTITUDE HEAT VALUE 0.58 0.60 0.62...
- Page 16 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 FOR EACH 1000 FT ABOVE SEA LEVEL) SPECIFIC GRAVITY OF NATURAL GAS AVG GAS ALTITUDE HEAT VALUE 0.58 0.60 0.62...
- Page 17 BURNER FLAME CAUTION: If Model 376CAV066115 is installed in BURNER 0.50-in. wc or lower static pressure ductwork, evaporator coil condensate blow off can occur during cooling opera- tion. When installed in this manner, do not use high blower speed tap for cooling. CAUTION: Recheck temperature rise.
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Page 18: Check Safety Controls
NOTE: When using an electronic thermostat, set the cycle rate for a. Disconnect power to furnace and remove vent connector 3 cycles per hr. from furnace outlet collar. Be sure to allow time for vent pipe to cool down before removing. V. - Page 19 CHECKLIST—INSTALLATION LOAD CALCULATION CHECKLIST—START-UP Gas Input Rate ________ Heating Load (Btuh) (Set Within 2 Percent of Rating ________ Plate) ________ Cooling Load (Btuh) ________ Temperature Rise Adjusted ________ Furnace Model Selection Thermostat Anticipator Setting Adjusted or ________ AIR FOR COMBUSTION AND VENTILATION ________ Unconfined Space Thermostat Cycle Rate (3 cycles per...
- Page 20 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 —20— Printed in U.S.A. 395c4015 Catalog No. 5339-503...
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