Carrier 58MXA Operating And Instruction Manual
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Carrier 58MXA Operating And Instruction Manual

Carrier 58MXA Operating And Instruction Manual

4-way multipoise fixed-capacity direct-vent condensing gas furnace
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Download this manual See also: Service and Maintenance Instructions, Installation, Start-up, and Operating Instructions
Installation, Start-Up, and Operating Instructions
NOTE: Read the entire instruction manual before starting the
installation.
This symbol → indicates a change since the last issue.
Index
DIMENSIONAL DRAWING........................................................2
SAFETY CONSIDERATIONS .....................................................3
Clearances to Combustibles......................................................3
INTRODUCTION ..........................................................................4
APPLICATIONS ......................................................................4-11
General ......................................................................................4
Upflow Applications..............................................................4-6
Downflow Applications.........................................................7-8
LOCATION ............................................................................11-12
General...............................................................................11-12
Hazardous Locations...............................................................12
INSTALLATION....................................................................13-16
Leveling Legs (If Desired) .....................................................13
Installation On a Concrete Slab .............................................13
Applications) ................................................................13-14
Installation In Horizontal Applications ..................................14
Filter Arrangement..................................................................15
Bottom Closure Panel.............................................................15
Gas Piping...............................................................................16
ELECTRICAL CONNECTIONS...........................................16-20
115-v Wiring......................................................................16-17
24-v Wiring.............................................................................19
Accessories..............................................................................20
DIRECT VENTING ...............................................................20-28
Common Vent Systems.....................................................20
Combustion-Air and Vent Piping .....................................20-26
Kit Installation..............................................................26-28
Multiventing and Vent Termination.......................................28
CONDENSATE DRAIN ........................................................28-30
General ....................................................................................28
Application ..............................................................................30
Condensate Drain Protection ..................................................30
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 4
PC 101
Catalog No. 565-975
Tab 6a 8a
Direct-Vent Condensing Gas Furnace
For Sizes 040-120, Series 131
A93040
Page
Printed in U.S.A.
4-Way Multipoise Fixed-Capacity
®
SM
As an ENERGY STAR
Partner, Carrier Corpora-
tion has determined that
this product meets the EN-
CERTIFICATION OF MANUFACTURING SITE
ERGY STAR guidelines
for energy efficiency.
HORIZONTAL
LEFT
AIRFLOW
Fig. 1-Multipoise Orientations
SEQUENCE OF OPERATION..............................................30-32
Heating Mode ....................................................................30-31
Cooling Mode .........................................................................31
Continuous Blower Mode.......................................................31
Heat Pump Mode ....................................................................31
Component Test.................................................................31-32
START-UP PROCEDURES ..................................................32-37
General ....................................................................................32
Prime Condensate Trap With Water ......................................32
Purge Gas Lines......................................................................33
Adjustments .......................................................................33-37
Set Gas Input Rate ............................................................33-36
Set Temperature Rise..............................................................37
Adjust Blower Off Delay (Heat Mode) .................................37
Set Thermostat Heat Anticipator............................................37
CHECK SAFETY CONTROLS..................................................38
Check Primary Limit Control.................................................38
Check Pressure Switch ...........................................................38
CHECKLIST...........................................................................38-39
Form 58MXA-6SI
Pg 1
58MXA
ama
A PP R O VED
R
AIRFLOW
UPFLOW
HORIZONTAL
RIGHT
DOWNFLOW
AIRFLOW
AIRFLOW
A93041
5-96
Replaces: 58MXA-5SI

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Summary of Contents for Carrier 58MXA

  • Page 1: Table Of Contents

    A93040 NOTE: Read the entire instruction manual before starting the installation. As an ENERGY STAR Partner, Carrier Corpora- This symbol → indicates a change since the last issue. tion has determined that this product meets the EN- CERTIFICATION OF MANUFACTURING SITE...

  • Page 3: Safety Considerations

    SAFETY CONSIDERATIONS ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS 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 Electrostatic discharge can affect electronic components. personnel can perform basic maintenance functions such as clean- Take precautions during furnace installation and servicing to ing and replacing air filters.

  • Page 4: Introduction

    An A.G.A./C.G.A. certified gas conversion kit is servicing or cause premature component failure. required to convert furnace for use with propane gas. The 58MXA Furnaces are A.G.A./C.G.A. approved for use in manufactured (mobile) homes when factory accessory conversion kit is used.

  • Page 5: Upflow Applications

    FURNACE BLOWER SHELF CONDENSATE DOOR TRAP FURNACE CONDENSATE DOOR FURNACE TRAP (INSIDE) FURNACE SIDE SIDE FIELD FIELD DRAIN DRAIN CONN CONN ALTERNATE DRAIN TUBE LOCATION SIDE VIEW FRONT VIEW END VIEW FRONT VIEW CONDENSATE TRAP DRAIN TUBE LOCATION HORIZONTAL DOWNFLOW AND ALTERNATE UPFLOW APPLICATIONS APPLICATIONS EXTERNAL UPFLOW APPLICATIONS...
  • Page 6 PLUG PLUG COLLECTOR BOX COLLECTOR BOX DRAIN TUBE (BLUE DRAIN TUBE (BLUE & WHITE STRIPED) & WHITE STRIPED) COLLECTOR BOX COLLECTOR BOX TUBE (PINK) TUBE (PINK) COLLECTOR BOX COLLECTOR BOX TUBE (GREEN) TUBE (GREEN) COLLECTOR BOX DRAIN TUBE (BLUE) INDUCER HOUSING (MOLDED) DRAIN TUBE (BEHIND COLLECTOR BOX...

  • Page 7: Downflow Applications

    Step 3—Downflow Applications c. Connect LOWER collector box drain connection to con- densate trap. A downflow furnace application is where furnace blower is located above combustion and controls section of furnace, and conditioned (1.) Condensate Trap Located on Left Side of Casing air is discharged downwards.
  • Page 8 d. Use inducer housing drain tube (violet label and factory- tube (green label) which was factory connected to the condensate supplied in loose parts bag) to connect LOWER inducer trap relief port connection MUST be connected to the pressure housing drain connection to the condensate trap. switch in DOWNFLOW or HORIZONTAL RIGHT applications.

  • Page 9: Horizontal Left (Supply-Air Discharge) Applications

    CONDENSATE TRAP FIELD DRAIN ATTACHMENT Refer to Condensate Drain section for recommendations and Local codes may require a drain pan under entire furnace and procedures. condensate trap when a condensing furnace is used in an attic → PRESSURE SWITCH TUBING application or over a finished ceiling.
  • Page 10 COMBUSTION – AIR INTAKE VENT 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. WORK AREA ″ ⁄ MANUAL SHUTOFF ACCESS OPENING GAS VALVE FOR TRAP DRAIN...

  • Page 11: Location

    COLLECTOR BOX DRAIN TUBE (BLUE) COLLECTOR BOX TUBE (GREEN) COLLECTOR BOX EXTENSION TUBE PLUG COLLECTOR BOX TUBE (PINK) CONDENSATE TRAP COLLECTOR BOX DRAIN TUBE (BLUE AND WHITE STRIPED) INDUCER HOUSING DRAIN TUBE (VIOLET) COLLECTOR BOX EXTENSION TUBE A96199 → Fig. 11—Horizontal Right Tube Configuration NOTE: Combustion-air and vent pipes are restricted to a mini- Relocate tubes as described below: mum length of 5 ft.

  • Page 12: Furnace Location Relative To Cooling Equipment

    FRONT 32°F MINIMUM INSTALLED °F °F AMBIENT OR FREEZE PROTECTION REQUIRED RETURN MAX 85°F MIN 55°F A93058 A93042 NOTE: These furnaces are designed for a minimum continuous If these furnaces are installed in an unconditioned space return-air temperature of 60°F or intermittent operation down to 55°F where ambient temperatures may be 32°F or lower, freeze such as when used with a night setback thermostat.

  • Page 13: Installation

    INSTALLATION Step 1—Leveling Legs (If Desired) When furnace is used in upflow position with side inlet(s), leveling legs may be desired. (See Fig. 12.) Install field-supplied, corrosion-resistant 5/16-in. machine bolts and nuts. ″ ⁄ ″ HOLE IN ⁄ FLOOR ″ ⁄...

  • Page 14: Installation In Horizontal Applications

    Do not bend duct flanges inward as shown in Fig. 15. This will affect airflow across heat exchangers and may cause limited cycling or premature heat exchanger failure. Remove duct flange completely or bend it inward a minimum of 210° FURNACE (OR COIL CASING as shown in Fig.

  • Page 15: Filter Arrangement

    Step 5—Filter Arrangement ⁄ -IN. WIDE ⁄ -IN. WIDE CASINGS ONLY: CASINGS ONLY: CUT AND FOLD INSTALL FIELD-SUPPLIED FACTORY-PROVIDED FILTER FILLER STRIP FILTERS AS SHOWN Never operate unit without a filter or with blower access UNDER FILTER. TO DESIRED SIZE. panel removed.

  • Page 16: Gas Piping

    Step 7—Gas Piping Gas piping must be installed in accordance with national and local SUPPLY codes. Refer to current edition of NFGC. Canadian installations MANUAL must be made in accordance with NSCNGPIC and all authorities SHUTOFF VALVE having jurisdiction. Gas supply line should be a separate line (REQUIRED) running directly from meter to furnace, if possible.
  • Page 17 FIELD 24-VOLT WIRING FIELD 115-, 208/230-, 460-VOLT WIRING FACTORY 24-VOLT WIRING FACTORY 115-VOLT WIRING NOTE 2 THERMOSTAT FIVE FIELD-SUPPLIED TERMINALS WIRE FUSED DISCONNECT THREE-WIRE 208/230- OR HEATING- 460-VOLT ONLY THREE PHASE 208/230- VOLT SINGLE AUXILIARY 115-VOLT FIELD- PHASE J-BOX SUPPLIED NOTE 1 CONTROL FUSED...

  • Page 19: 24-V Wiring

    Table 3—Electrical Data OPERATING VOLTS— UNIT UNIT MAX WIRE MAX FUSE OR VOLTAGE RANGE HERTZ— UNIT WIRE SIZE AMPACITY† LENGTH (FT)‡ CKT BKR AMPS** PHASE AMPS SIZE Max* Min* 040-08 115—60—1 040-12 115—60—1 10.0 060-08 115—60—1 060-12 115—60—1 060-16 115—60—1 12.8 080-12 115—60—1...

  • Page 20: Accessories

    NOTE: Furnace combustion-air and vent pipe connections are sized for 2-in. pipe. Any pipe size change should be made outside The 58MXA Furnaces require a dedicated (one 58MXA furnace furnace casing in vertical pipe. (See Fig. 27.) This allows proper only) direct-vent system.
  • Page 21 † 18 in. above roof surface in Canada. ‡ 36 in. to electric meter in Canada only. NOTES: 1. If installing 2 adjacent 58MXA Furnaces, refer to Multiventing and Vent Terminations section for proper vent configurations. 2. When locating combustion-air and vent terminations, consideration must be...
  • Page 22 12″ MIN 12″ MIN VENT PIPE VENT PIPE COMBUSTION-AIR PIPE COMBUSTION-AIR PIPE HORIZONTAL TO ROOF 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.
  • Page 23 Table 5—Maximum Allowable Pipe Length (Ft) NUMBER OF 90° ELBOWS TERMINATION PIPE DIA ALTITUDE UNIT SIZE TYPE (IN.)* 040-08 2 Pipe or 2-In. 1-1/2 040-12 Concentric 060-08 1-1/2 2 Pipe or 2-In. 060-12 Concentric 060-16 1-1/2 080-12 2 Pipe or 2-In. 080-16 Concentric 0 to 2000...
  • Page 24 Table 5—Maximum Allowable Pipe Length (Ft) Continued NUMBER OF 90° ELBOWS TERMINATION PIPE DIA ALTITUDE UNIT SIZE TYPE (IN.)* 1-1/2 040-08 2 Pipe or 2-In. 040-12 Concentric 060-08 1-1/2 2 Pipe or 2-In. 060-12 Concentric 060-16 080-12 2 Pipe or 2-In. 5001 to 6000‡...
  • Page 25 Table 5—Maximum Allowable Pipe Length (Ft) Continued NUMBER OF 90° ELBOWS TERMINATION PIPE DIA ALTITUDE UNIT SIZE TYPE (IN.)* 1-1/2 040-08 2 Pipe or 2-In. 040-12 Concentric 060-08 2 Pipe or 2-In. 060-12 Concentric 060-16 080-12 2 Pipe or 2-In. 9001 to 10,000‡...

  • Page 26: Concentric Vent And Combustion-Air Termination Kit Installation

    6. Clean and dry all surfaces to be joined. 4. The 3-in. concentric vent/air termination kit is for 2-1/2 in. and 3-in. diameter pipe systems when single penetration of wall or 7. Check dry fit of pipe and mark insertion depth on pipe. roof is desired.
  • Page 27 ROOF 18″ MAXIMUM BRACKET COUPLING COMBUSTION VERTICAL SEPARATION VENT BETWEEN COMBUSTION AIR AND VENT 8 3 / 4 ″ FOR 3″ KIT 6 3 / 4 ″ FOR 2″ KIT MAINTAIN 12 IN. MINIMUM CLEARANCE ABOVE HIGHEST ANTICIPATED SNOW LEVEL. MAXIMUM OF 24 IN.

  • Page 28: Multiventing And Vent Termination

    32°F and below unless drain trap and Step 4—Multiventing and Vent Terminations drain line have adequate freeze protection. See Service and When 2 or more 58MXA Furnaces are vented near each other, Maintenance Instructions for winterizing procedure. each furnace must be individually vented. NEVER common vent...
  • Page 29 A96128 → Fig. 36—Rooftop Termination (Dimension "A" is Touching or 2-In. Maximum Separation) VENT 1″ MAXIMUM VENT (TYP) COMBUSTION AIR VENT COMBUSTION VENT A93056 A93057 Fig. 37—Concentric Vent and Combustion-Air Fig. 38—Concentric Vent and Combustion-Air Roof Termination Side Termination (Dimension "A" is Touching or 2-In. (Dimension "A"...

  • Page 30: Application

    Step 2—Application The furnace, A/C, and humidifier drains may be combined and CONDENSATE TRAP drained together. The A/C drain must have an external, field- supplied trap prior to the furnace drain connection. All drain connections (furnace, A/C, or humidifier) must be terminated into an open or vented drain as close to the respective equipment as possible to prevent siphoning of the equipment’s drain.

  • Page 31: Cooling Mode

    → air cleaner remains energized 90, 135, 180, or 225 sec Step 5—Component Test (depending on blower off time selection). Furnace is factory COMPONENT TEST SEQUENCE shipped set for a 135-sec blower off delay. NOTE: All components are functionally operated except the gas 7.

  • Page 32: Start-Up Procedures

    5. Remove funnel and tube from inducer housing and replace drain connection cap and clamp. 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.

  • Page 33: Purge Gas Lines

    Verify furnace model. Table 7 can only be used for model A95622 Fig. 45—Redundant Automatic Gas Valve 58MXA furnaces. d. Find installation altitude in Table 7. NOTE: If orifice hole appears damaged or it is suspected to have NOTE: For Canada altitudes of 2000 to 4500 ft, use U.S.A.
  • Page 34 Table 7—Model 58MXA Orifice Size and Manifold Pressure for Correct Input (Tabulated Data Based on 20,000 Btuh per Burner, Derated 2% for Each 1000 Ft Above Sea Level) SPECIFIC GRAVITY OF NATURAL GAS AVG GAS ALTITUDE HEAT VALUE 0.58 0.60 0.62...
  • Page 35 Table 7—Model 58MXA Orifice Size and Manifold Pressure for Correct Input Continued (Tabulated Data Based on 20,000 Btuh per Burner, Derated 2% for Each 1000 Ft Above Sea Level) SPECIFIC GRAVITY OF NATURAL GAS AVG GAS ALTITUDE HEAT VALUE 0.58 0.60...
  • Page 36 Table 7—Model 58MXA Orifice Size and Manifold Pressure for Correct Input Continued (Tabulated Data Based on 20,000 Btuh per Burner, Derated 2% for Each 1000 Ft Above Sea Level) SPECIFIC GRAVITY OF NATURAL GAS AVG GAS ALTITUDE HEAT VALUE 0.58 0.60...

  • Page 37: Set Temperature Rise

    Table 9—Gas Rate (Cu Ft/Hr) See Table 10 for lead color identification. Reconnect original lead on SPARE terminal. SIZE OF TEST DIAL SIZE OF TEST DIAL SECONDS SECONDS Follow this same procedure for proper selection of COOL FOR 1 FOR 1 REVOLUTION REVOLUTION cu ft...

  • Page 38: Check Safety Controls

    CHECK SAFETY CONTROLS should NOT glow, and control center diagnostic light flashes a 31 fault. If hot surface ignitor glows when inducer motor is Step 1—Check Primary Limit Control disconnected, shut furnace down immediately. Determine This control shuts off combustion control system and energizes reason pressure switch did not function properly and correct air-circulating blower motor if furnace overheats.
  • Page 39 CHECKLIST—INSTALLATION LOAD CALCULATION Condensate Drain ____________ Heating Load (Btuh) ________ Unit Level or Pitched Forward ____________ Cooling Load (Btuh) Internal Tubing Connections Free of Kinks ________ and Traps ____________ Furnace Model Selection External Drain Connection Leak Tight and COMBUSTION AND VENT PIPING ________ Sloped Termination Location...
  • Page 40 [ ] Classroom Service Training A94328 Copyright 1996 CARRIER Corp. • 7310 W. Morris St. • Indianapolis, IN 46231 58mxa6si Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

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