Operating instructions

ManualsBrandsSharp ManualsKitchen AppliancesR-340M W

NOTE: Read the entire instruction manual before starting the

installation.

This symbol → indicates a change since the last issue.

Index Page

DIMENSIONAL DRAWING........................................................2

SAFETY CONSIDERATIONS.....................................................3

Clearances to Combustibles......................................................3

ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS ....3-4

INTRODUCTION..........................................................................4

APPLICATIONS ......................................................................4-11

General ......................................................................................4

Upflow Applications..............................................................4-7

Downflow Applications.........................................................7-8

Horizontal Left (Supply-Air Discharge) Applications .........8-9

Horizontal Right (Supply-Air Discharge) Applications...10-11

LOCATION ............................................................................11-13

General...............................................................................11-12

Furnace Location Relative to Cooling Equipment ................12

Hazardous Locations...............................................................13

INSTALLATION....................................................................13-17

Leveling Legs (If Desired).....................................................13

Installation In Upflow or Downflow Applications................13

Installation In Horizontal Applications..................................13

Air Ducts............................................................................13-16

Filter Arrangement..................................................................16

Bottom Closure Panel........................................................16-17

Gas Piping...............................................................................17

ELECTRICAL CONNECTIONS...........................................17-19

115-v Wiring......................................................................18-19

24-v Wiring.............................................................................19

Accessories..............................................................................19

Wiring Diagram ......................................................................20

DIRECT VENTING ...............................................................19-30

Removal of Existing Furnaces from

Common Vent Systems.....................................................19

Combustion-Air and Vent Piping .....................................19-27

Concentric Vent and Combustion-Air Termination

Kit Installation..............................................................27-30

Multiventing and Vent Termination.......................................30

CONDENSATE DRAIN ........................................................30-32

General ....................................................................................30

Application..............................................................................30

Condensate Drain Protection..................................................30

SEQUENCE OF OPERATION..............................................30-33

Heating Mode ....................................................................30-32

Cooling Mode .........................................................................32

Continuous Blower Mode.......................................................32

Heat Pump Mode...............................................................32-33

Component Test......................................................................33

START-UP PROCEDURES ..................................................33-42

General ....................................................................................33

Prime Condensate Trap With Water.................................33-34

Purge Gas Lines......................................................................34

Adjustments .......................................................................34-42

Set Gas Input Rate ............................................................34-41

Set Temperature Rise ........................................................41-42

Blower Off Delay (Heat Mode).............................................42

Set Thermostat Heat Anticipator............................................42

CHECK SAFETY CONTROLS..................................................42

Check Primary Limit Control.................................................42

Check Pressure Switch ...........................................................42

CHECKLIST...........................................................................42-43

A93040

ama

CANADIAN GAS ASSOCIATION

APPROVED

As an ENERGY STAR®

Partner, Bryant Heating &

Cooling Systems Com-

pany has determined that

this product meets the EN-

ERGY STAR® guidelines

for energy efficiency.

REGISTERED QUALITY SYSTEM

Fig. 1—Multipoise Orientations

A93041

UPFLOW

DOWNFLOW

HORIZONTAL

LEFT

AIRFLOW

HORIZONTAL

RIGHT

installation, start-up,

and operating instructions

4-WAY MULTIPOISE

FIXED-CAPACITY DIRECT-VENT

CONDENSING GAS FURNACE

Cancels: II 340M-40-5 II 340M-40-6

4-99

340MAV

Series E

—1—

Summary of content (44 pages)

PAGE 1
installation, start-up, and operating instructions 340MAV 4-WAY MULTIPOISE FIXED-CAPACITY DIRECT-VENT CONDENSING GAS FURNACE Series E Cancels: II 340M-40-5 II 340M-40-6 4-99 ama ® CANADIAN GAS ASSOCIATION A PP R O VED R As an ENERGY STAR® Partner, Bryant Heating & Cooling Systems Company has determined that this product meets the ENERGY STAR® guidelines for energy efficiency. A93040 NOTE: Read the entire instruction manual before starting the installation.
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—2— 1 1⁄4" 1" 14 1⁄2" TYP 26 15⁄16" 1⁄2-IN. 26 15⁄16" TYP 23 1⁄4" TYP SIDE INLET SIDE INLET DIA THERMOSTAT ENTRY 22 11⁄16" 2-IN. VENT CONN DIA GAS CONN 1⁄2-IN. 2-IN. COMBUSTIONAIR CONN 22 5⁄16" 24 1⁄2" 26 1⁄4" UNIT SIZE 024040 036040 024060 036060 048060 036080 048080 060080 048100 060100 060120 060140 17 E INLET OUTLET D 11/16" 18 1⁄4" D 15-7/8 15-7/8 15-7/8 15-7/8 15-7/8 15-7/8 15-7/8 19-3/8 19-3/8 19-3/8 22-7/8 22-7/8 → Fig.
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SAFETY CONSIDERATIONS 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. Installing and servicing heating equipment can be hazardous due to gas and electrical components. Only trained and qualified personnel should install, repair, or service heating equipment.
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recharges your body with static electricity (for example; DO NOT move or shuffle your feet, DO NOT touch ungrounded objects, etc.). 4. If you touch ungrounded objects (recharge your body with static electricity), firmly touch furnace again before touching control or wires. This furnace must be installed with a direct-vent (combustion air and flue) system and a factory accessory termination kit.
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FURNACE DOOR BLOWER SHELF CONDENSATE TRAP CONDENSATE TRAP (INSIDE) FURNACE DOOR FURNACE SIDE 4 78 FURNACE SIDE 4 534 534 4 FIELD DRAIN CONN ALTERNATE DRAIN TUBE LOCATION 26 1 4 26 1 4 11 2 SIDE VIEW CONDENSATE TRAP DRAIN TUBE LOCATION FIELD DRAIN CONN FRONT VIEW END VIEW SLOT FOR SCREW HORIZONTAL APPLICATION (OPTIONAL) FRONT VIEW HORIZONTAL APPLICATIONS DOWNFLOW AND ALTERNATE EXTERNAL UPFLOW APPLICATIONS UPFLOW APPLICATIONS 34 1⁄4 OD COLLECTOR BOX TO TRAP RELIEF PORT 11 2 1⁄2 O
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PLUG CAP COLLECTOR BOX DRAIN TUBE (BLUE & WHITE STRIPED) COLLECTOR BOX TUBE (PINK) PLUG CAP COLLECTOR BOX TUBE (GREEN) COLLECTOR BOX DRAIN TUBE (BLUE & WHITE STRIPED) COLLECTOR BOX TUBE (PINK) INDUCER HOUSING (MOLDED) DRAIN TUBE (BEHIND COLLECTOR BOX DRAIN TUBE) COLLECTOR BOX DRAIN TUBE (BLUE) COLLECTOR BOX TUBE (GREEN) CONDENSATE TRAP COLLECTOR BOX DRAIN TUBE (BLUE) FIELD-INSTALLED FACTORY-SUPPLIED DRAIN TUBE COUPLING (LEFT DRAIN OPTION) CONDENSATE TRAP FIELD-INSTALLED FACTORY-SUPPLIED DRAIN TUBE FI
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NOTE: See Fig. 5 or 6 or tube routing label on main furnace door to check for proper connections. 1. Remove 3 tubes connected to condensate trap. 2. Remove trap from blower shelf by gently pushing tabs inward and rotating trap. 3. Remove casing hole filler cap from casing hole. (See Fig. 2, 7, or 8.) 4. Install casing hole filler cap into blower shelf hole where trap was removed. 5.
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(b.) Connect larger diameter drain tube (factorysupplied in loose parts bag) to drain tube coupling, extending collector box drain tube for connection to condensate trap. 4. Extend collector box pressure tube (pink label) which was previously connected to pressure switch by splicing to remaining small diameter tube (factory-supplied in loose parts bag). (c.) Route extended collector box drain tube directly from collector box drain to condensate trap as shown in Fig. 8. 5.
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b. Use inducer housing drain extension tube (violet label and factory-supplied in loose parts bag) to connect LOWER inducer housing drain connection to the condensate trap. 2. Use smaller diameter tube (factory-supplied in loose parts bag) to extend tube disconnected in item 1. 3. Route extended tube: c. Determine appropriate length, cut, and connect tube. a. Behind inducer housing. d. Clamp tube to prevent any condensate leakage. b. Between blower shelf and inducer housing. c.
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COMBUSTION – AIR INTAKE VENT 30″ MIN WORK AREA 5 3⁄4″ MANUAL SHUTOFF GAS VALVE A 12-IN. MIN HORIZONTAL PIPE SECTION IS RECOMMENDED WITH SHORT (5 TO 8 FT) VENT SYSTEMS TO REDUCE EXCESSIVE CONDENSATE DROPLETS FROM EXITING THE VENT PIPE. ACCESS OPENING FOR TRAP SEDIMENT TRAP DRAIN CONDENSATE TRAP NOTE: LOCAL CODES MAY REQUIRE A DRAIN PAN UNDER THE FURNACE AND CONDENSATE TRAP WHEN A CONDENSING FURNACE IS INSTALLED ABOVE FINISHED CEILINGS. A93031 Fig. 10—Attic Location and Working Platform V.
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CAP COLLECTOR BOX DRAIN TUBE (BLUE) COLLECTOR BOX TUBE (GREEN) COLLECTOR BOX EXTENSION TUBE COLLECTOR BOX TUBE (PINK) PLUG CONDENSATE TRAP COLLECTOR BOX DRAIN TUBE (BLUE AND WHITE STRIPED) INDUCER HOUSING DRAIN TUBE (VIOLET) COLLECTOR BOX EXTENSION TUBE A93303 → Fig. 11—Horizontal Right Tube Configuration 3. Relief Port Tube 7. Determine appropriate length, cut, and connect tube. Refer to Pressure Switch Tubing section for connection procedure. 8. Clamp tube to relief port connection. E.
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FRONT LEVEL (0″) TO 1⁄2″ MAX FRONT LEVEL (0″) TO 1⁄2″ MAX UPFLOW OR DOWNFLOW FRONT B A C K HORIZONTAL BACK A93025 NOTE: For proper furnace operation, install furnace so that it is level or pitched forward within 1/2 in. to ensure proper condensate drainage from secondary heat exchangers. FRONT A93043 WARNING: Do not install furnace on its back. Safety control operation will be adversely affected. Never connect return-air ducts to back of furnace.
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III. HAZARDOUS LOCATIONS 4. Adjust outside nut to provide desired height, and tighten inside nut to secure arrangement. NOTE: Bottom closure must be used when leveling legs are used. See Bottom Closure Panel section. II. INSTALLATION IN UPFLOW OR DOWNFLOW APPLICATIONS 18-IN. MINIMUM TO BURNERS NOTE: For downflow applications, this furnace is approved for use on combustible flooring when special base (available from manufacturer) Part No. KGASB0201ALL is used.
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A PLENUM OPENING D B FLOOR OPENING C A96283 Fig. 13—Floor and Plenum Opening Dimensions FURNACE FURNACE (OR COIL CASING WHEN USED) CD5 OR CK5 COIL ASSEMBLY OR KCAKC COIL BOX COMBUSTIBLE FLOORING COMBUSTIBLE FLOORING DOWNFLOW SUBBASE SHEET METAL PLENUM SHEET METAL PLENUM FLOOR OPENING FLOOR OPENING A96284 A96285 Fig. 15—Furnace, Plenum, and Coil Assembly or Coil Box Installed on a Combustible Floor Fig.
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Flexible connections should be used between ductwork and furnace to prevent transmission of vibration. Ductwork passing through unconditioned space should be insulated to enhance system performance. When air conditioning is used, a vapor barrier is recommended. Maintain a 1-in. clearance from combustible materials to supply air ductwork for a distance of 36 in. horizontally from the furnace. See NFPA 90B or local code for further requirements. PERFORATED DISCHARGE DUCT FLANGE NO B.
PAGE 16
supply/outlet or air conditioning coil casing (when used), when installed on non-combustible material. When installed on combustible material, supply-air duct attachment must ONLY be connected to an accessory subbase or factory approved air conditioning coil casing. DO NOT cut main furnace casing to attach supply side air duct, humidifier, or other accessories. All accessories MUST be connected external to furnace main casing. HORIZONTAL FURNACES Connect supply-air duct to supply air opening on furnace.
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TABLE 3—MAXIMUM CAPACITY OF PIPE* To remove bottom closure panel, perform following: NOMINAL IRON PIPE SIZE (IN.) 1/2 3/4 1 1-1/4 1-1/2 1. Tilt or raise furnace and remove 2 screws holding front filler panel. (See Fig. 20.) 2. Rotate front filler panel downward to release holding tabs. 3. Remove bottom closure panel. 4. Reinstall front filler panel and screws. LENGTH OF PIPE (FT) INTERNAL DIAMETER (IN.) 10 20 30 40 50 0.622 0.824 1.049 1.380 1.
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FIELD 24-V WIRING FIELD 115-, 208/230-, 460-V WIRING FACTORY 24-V WIRING FACTORY 115-V WIRING NOTE 2 W FIVE WIRE C R G Y THERMOSTAT TERMINALS FIELD-SUPPLIED DISCONNECT THREE-WIRE HEATINGONLY BLK BLK W WHT WHT R GND GND AUXILIARY 115-V FIELD-SUPPLIED J-BOX CONTROL DISCONNECT BOX 208/230- OR 460-V THREE PHASE 208/230-V SINGLE PHASE G C GND NOTE 1 CONDENSING UNIT Y 24-V TERMINAL BLOCK FURNACE TWO WIRE NOTES: 1. Connect Y-terminal as shown for proper operation. 2.
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automotive-type fuse located on control center. (See Fig. 25.) Any electrical shorts of 24-v wiring during installation, service, or maintenance may cause fuse to blow. If fuse replacement is required, use only a fuse of identical size (3 amp). NOTE: Use AWG No. 18 color-coded copper thermostat wire for lengths up to 100 ft. For wire lengths over 100 ft, use AWG No. 16 wire. III. ACCESSORIES ELECTRIC DISCONNECT SWITCH COPPER WIRE ONLY 1.
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SEE NOTE #10 (NOT ON ALL MODELS) SW2 BLOWER OFF DELAY SW1 BLOWER OFF DELAY SELECTION CHART G R Y W COM HUM PRS RED 225 SEC 3 2 1 WHT LS SEC-1 SEC-2 BLU 1 2 3 PR2 WHT BLK 1 1 2 PL2 PL5 HSI M PR1 PR2 115VAC OL 1 3 24VAC 2 TEST/TWIN FU1 BLU (MED LO) BRN SEC-1 FRS SEC-2 GVR-2 LS 7 1 R AUX IDM WHT ILK HSIR FUSED DISCONNECT SWITCH (WHEN REQ'D) NOTE #4 JB OL BLK GRN BLWR IDR HI/LO FU2 PL1 GVR NEUTRAL PL1 PL2 PL3 PL4 PL5 PRS SW1 & 2 TEST/TWIN TRAN GVR-1 CPU 9-
PAGE 21
COM W Y R G 24V TEST/TWIN HUM 24-V THERMOSTAT TERMINALS HUMIDIFIER TERMINAL (24-VAC 0.5 AMP MAX) LED OPERATION & DIAGNOSTIC LIGHT HARNESS CONNECTOR SEC-1 24-V TRANSFORMER SEC-2 3-AMP FUSE SPARE-1 COOL HEAT BLOWER SPEED SELECTION TERMINALS SPARE-2 EAC-1 EAC-ELECTRONIC AIR CLEANER TERMINALS (115-VAC 1.5 AMP MAX) 115-VAC (L1) POWER SUPPLY HOT SURFACE IGNITOR CONNECTOR EAC-2 115-VAC (L2) NEUTRAL CONNECTION INDUCER MOTOR CONNECTOR Fig. 25—Control Center II.
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NOTE: Select 1 vent pipe connection and NOTE: Select 1 vent pipe connection and 1 combustion-air pipe connection. 1 combustion-air pipe connection. COMBUSTIONAIR FURNACE AIR FLOW COMBUSTIONAIR VENT VENT VENT VENT NOT IN HORIZONTAL SECTION COMBUSTIONAIR PIPE DIAMETER TRANSITION IN VERTICAL SECTION UPFLOW AIR FLOW COMBUSTIONAIR DOWNFLOW A93034 Fig.
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12″ MIN 12″ MIN VENT PIPE VENT PIPE COMBUSTION-AIR PIPE HORIZONTAL TO ROOF COMBUSTION-AIR PIPE HORIZONTAL TO SIDEWALL COMBUSTION-AIR PIPE VENT PIPE COMBUSTION-AIR PIPE 12″ MIN 12″ MIN VENT PIPE VERTICAL TO ROOF VERTICAL TO SIDEWALL NOTE: A 12 In. minimum offset pipe section is recommended with short (5 to 8 ft) vent systems. This recommendation is to reduce excessive condensate droplets from exiting the vent pipe. A96230 Fig. 28—Short Vent (5 to 8 Ft) System b.
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TABLE 6—MAXIMUM ALLOWABLE PIPE LENGTH (FT) ALTITUDE (FT) 0 to 2000 ALTITUDE (FT) ALTITUDE (FT) 3001 to 4000 NUMBER OF 90° ELBOWS 2 3 4 5 NA NA NA NA 70 65 60 60 70 70 70 70 6 NA 55 70 1-1/2 20 15 NA 2 70 70 70 70 70 70 1-1/2 2 2-1/2 2 2-1/2 3 2-1/2 one disk 3† 3† no disk 4† no disk 2-1/2 one disk 3† one disk 3† no disk 4† no disk 10 55 70 5 40 70 10 45 70 70 5 40 60 70 NA 50 70 NA 30 70 NA 40 70 70 NA 35 56 70 NA 35 70 NA 20 70 NA 35 70 70 NA 30 52 70 NA 30 70 NA 20 70 NA 30 70 70 NA 2
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TABLE 6—MAXIMUM ALLOWABLE PIPE LENGTH (FT) ALTITUDE (FT) 4001 to 5000‡ ALTITUDE (FT) 5001 to 6000‡ ALTITUDE (FT) 6001 to 7000‡ ALTITUDE(FT) 7001 to 8000‡ Continued UNIT SIZE TERMINATION TYPE PIPE DIA (IN.)* 024040 036040 2 Pipe or 2-In. Concentric 1-1/2 2 1 60 70 NUMBER OF 90° ELBOWS 2 3 4 5 55 50 45 44 70 70 70 70 2 Pipe or 2-In. Concentric 1-1/2 15 10 5 NA NA NA 2 64 59 58 53 52 52 2 Pipe or 2-In.
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TABLE 6—MAXIMUM ALLOWABLE PIPE LENGTH (FT) ALTITUDE (FT) 8001 to 9000‡ UNIT SIZE TERMINATION TYPE PIPE DIA (IN.)* 024040 036040 2 Pipe or 2-In. Concentric 024060 036060 048060 036080 048080 060080 1-1/2 2 2 41 60 2 Pipe or 2-In. Concentric 1-1/2 11 6 NA NA NA 2 49 44 42 37 35 34 2 Pipe or 2-In.
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→ → III. CONCENTRIC VENT AND COMBUSTION-AIR TERMINATION KIT INSTALLATION c. Install pipe support (factory-supplied in loose parts bag) into selected furnace casing vent pipe hole. Pipe support should be positioned at bottom of casing hole. NOTE: If these instructions differ from those packaged with termination kit, follow kit instructions. d. Be certain that mating surfaces of inducer housing connection, elastomeric coupling, and 2-in. diameter vent pipe are clean and dry.
PAGE 28
→ TABLE 7—MAXIMUM ALLOWABLE EXPOSED VENT PIPE LENGTH (FT) WITH AND WITHOUT INSULATION IN WINTER DESIGN TEMPERATURE AMBIENT* UNIT SIZE 040 060 080 100 120 140 WINTER DESIGN TEMPERATURE (°F) 20 0 -20 20 0 -20 20 0 -20 20 0 -20 20 0 -20 20 0 -20 20 0 -20 20 0 -20 20 0 -20 20 0 -20 20 0 -20 MAX PIPE DIAMETER (IN.) 1.5 1.5 1.5 2 2 2 2 2 2 2 2 2 2.5 2.5 2.5 2.5 2.5 2.5 3 3 3 3 3 3 4 4 4 3 3 3 4 4 4 WITHOUT INSULATION WITH 3/8-IN.
PAGE 29
ROOF 18″ MAXIMUM BRACKET COUPLING COMBUSTION AIR VERTICAL SEPARATION BETWEEN COMBUSTION AIR AND VENT 8 3/4″ FOR 3″ KIT 6 3/4″ FOR 2″ KIT VENT MAINTAIN 12 IN. MINIMUM CLEARANCE ABOVE HIGHEST ANTICIPATED SNOW LEVEL. MAXIMUM OF 24 IN. ABOVE ROOF. A87224 Fig. 30—Roof Termination (Preferred) OVERHANG OR ROOF 12″ MINIMUM 1″ MAXIMUM VENT COMBUSTION-AIR VENT COMBUSTION AIR MAINTAIN 12 IN. CLEARANCE ABOVE HIGHEST ANTICIPATED SNOW LEVEL OR GRADE, WHICHEVER IS GREATER. MAINTAIN 12 IN. (18 IN.
PAGE 30
A A96128 Fig. 35—Rooftop Termination (Dimension "A" is Touching or 2-In. Maximum Separation) 1″ MAXIMUM (TYP) VENT VENT A COMBUSTION AIR VENT COMBUSTION AIR A VENT A93056 A93057 Fig. 36—Concentric Vent and Combustion-Air Roof Termination (Dimension "A" is Touching or 2-In. Maximum Separation) Fig. 37—Concentric Vent and Combustion-Air Side Termination (Dimension "A" is Touching or 2-In.
PAGE 31
Sidewall terminations—Locate assembly through sidewall with rain shield positioned no more than 1-in. from wall as shown in Fig. 32. 5. Disassemble loose pipe fittings. Clean and cement using same procedures as used for system piping. 6. Check required dimensions as shown in Fig. 31 or 32. IV. MULTIVENTING AND VENT TERMINATIONS When 2 or more 340MAV Furnaces are vented near each other, each furnace must be individually vented. NEVER common vent or breach vent 340MAV furnaces.
PAGE 32
5. When using field-supplied heat tape, follow heat tape manufacturer’s instructions for all other installation guidelines. 6. Blower off delay—When thermostat is satisfied, circuit between R-W is opened, de-energizing gas valve (stopping gas flow to burners) and humidifier. Blower motor and electronic air cleaner remain energized for 135 sec. SEQUENCE OF OPERATION 7.
PAGE 33
NOTE: EAC-1 terminal is energized whenever blower operates. HUM terminal is only energized when gas valve is energized. V. WARNING: Blower access panel door switch opens 115-v power to control center. No component operation can occur. Caution must be taken when manually closing this switch for service purposes. Failure to follow this warning could result in electrical shock, personal injury, or death. COMPONENT TEST A.
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5. Remove funnel and tube from inducer housing and replace drain connection cap and clamp. III. PURGE GAS LINES If not previously done, purge lines after all connections have been made and check for leaks. WARNING: Never purge a gas line into a combustion chamber. Never use matches, candles, flame, or other sources of ignition for purpose of checking leakage. Use a soap-and-water solution to check for leakage. Failure to follow this warning could result in fire, explosion, personal injury, or death. IV.
PAGE 35
TABLE 8—MODEL 340MAV ORIFICE SIZE AND MANIFOLD PRESSURE FOR CORRECT INPUT FOR USE WITH 040 THROUGH 120 SIZE FURNACES ONLY (TABULATED DATA BASED ON 20,000 BTUH PER BURNER, DERATED 2% FOR EACH 1000 FT ABOVE SEA LEVEL) U.S.A. and Canada ALTITUDE RANGE (FT) 0 to 2000 U.S.A. and Canada ALTITUDE RANGE (FT) U.S.A. Altitudes 2001 to 3000 or Canada Altitudes 2000 to 4500 U.S.A.
PAGE 36
TABLE 8—MODEL 340MAV ORIFICE SIZE AND MANIFOLD PRESSURE FOR CORRECT INPUT (Continued) FOR USE WITH 040 THROUGH 120 SIZE FURNACES ONLY (TABULATED DATA BASED ON 20,000 BTUH PER BURNER, DERATED 2% FOR EACH 1000 FT ABOVE SEA LEVEL) U.S.A. Only ALTITUDE RANGE (FT) 4001 to 5000 U.S.A. Only ALTITUDE RANGE (FT) 5001 to 6000 U.S.A.
PAGE 37
TABLE 8—MODEL 340MAV ORIFICE SIZE AND MANIFOLD PRESSURE FOR CORRECT INPUT (Continued) FOR USE WITH 040 THROUGH 120 SIZE FURNACES ONLY (TABULATED DATA BASED ON 20,000 BTUH PER BURNER, DERATED 2% FOR EACH 1000 FT ABOVE SEA LEVEL) U.S.A. Only ALTITUDE RANGE (FT) 7001 to 8000 U.S.A. Only ALTITUDE RANGE (FT) 8001 to 9000 U.S.A.
PAGE 38
TABLE 9—MODEL 340MAV ORIFICE SIZE AND MANIFOLD PRESSURE FOR CORRECT INPUT FOR USE WITH 140 SIZE FURNACES ONLY (TABULATED DATA BASED ON 23,000 BTUH PER BURNER, DERATED 2% FOR EACH 1000 FT ABOVE SEA LEVEL) U.S.A. and Canada ALTITUDE RANGE (FT) 0 to 2000 U.S.A. and Canada ALTITUDE RANGE (FT) U.S.A. Altitudes 2001 to 3000 or Canada Altitudes 2001 to 4500 U.S.A.
PAGE 39
TABLE 9—MODEL 340MAV ORIFICE SIZE AND MANIFOLD PRESSURE FOR CORRECT INPUT (Continued) FOR USE WITH 140 SIZE FURNACES ONLY (TABULATED DATA BASED ON 23,000 BTUH PER BURNER, DERATED 2% FOR EACH 1000 FT ABOVE SEA LEVEL) ALTITUDE RANGE (FT) U.S.A. Only 4001 to 5000 U.S.A. Only ALTITUDE RANGE (FT) 5001 to 6000 ALTITUDE RANGE (FT) U.S.A.
PAGE 40
2. Adjust manifold pressure to obtain input rate. NOTE: Manifold pressure must always be measured with burner enclosure front REMOVED. Gas meter must always be clocked with burner enclosure front INSTALLED. a. Remove burner enclosure front. b. Remove cap that conceals adjustment screw for gas valve regulator. (See Fig. 44.) c. Turn adjusting screw, counterclockwise (out) to decrease manifold pressure or clockwise (in) to increase manifold pressure.
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TABLE 11—GAS RATE (CU FT/HR) CANADA At installation altitudes from 2000 to 4500 ft, this furnace must be derated 5% by an authorized Gas Conversion Station or Dealer. To determine correct input rate for altitude, see example above and use 0.95 as derate multiplier factor. SECONDS FOR 1 REVOLUTION 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 b. Turn off all other gas appliances and pilots. c.
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II. THERMOSTAT SUBBASE TERMINALS WITH THERMOSTAT REMOVED CHECK PRESSURE SWITCH This control proves operation of draft inducer. Check switch operation as follows: HOOK-AROUND VOLT/AMMETER 1. Turn off 115-v power to furnace. 2. Remove main furnace door and disconnect inducer motor lead wires from wire harness. R Y W G 3. Turn on 115-v power to furnace. 4. Set thermostat to call for heat and wait 1 minute.
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CHECKLIST—INSTALLATION LOAD CALCULATION Condensate Drain ________ Heating Load (Btuh) ________ Cooling Load (Btuh) ________ Furnace Model Selection ________ Unit Level or Pitched Forward ________ Internal Tubing Connections Free of Kinks and Traps ________ External Drain Connection Leak Tight and Sloped ________ Condensate Trap Primed before Start-Up ________ Heat Tape Installed if Required COMBUSTION AND VENT PIPING Termination Location ________ Roof or Sidewall ________ Termination Ki
PAGE 44
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. All include video and/or slides, plus companion book.