Carrier 58MXA Installation, Start-Up, And Operating Instructions Manual
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Carrier 58MXA Installation, Start-Up, And Operating Instructions Manual

Carrier 58MXA Installation, Start-Up, And Operating Instructions Manual

Deluxe 4–way multipoise fixed-capacity direct-vent condensing gas furnace
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Installation, Start-Up and Operating Instructions
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TABLE OF CONTENTS

SAFETY CONSIDERATIONS .....................................................1
INTRODUCTION ..........................................................................2
Codes and Standards ......................................................................4
APPLICATIONS............................................................................5
General ......................................................................................5
Upflow Applications.................................................................5
Downflow Applications ............................................................7
LOCATION..................................................................................11
General ....................................................................................11
Hazardous locations ................................................................13
INSTALLATION .........................................................................13
Leveling Legs (If Desired) .....................................................13
Installation in Horizontal Applications ..................................15
Air Ducts.................................................................................15
Filter Arrangement..................................................................17
Bottom Closure Panel.............................................................18
Gas Piping...............................................................................18
Electrical Connections ............................................................19
Direct Venting.........................................................................20
Condensate Drain....................................................................30
Sequence of Operation............................................................32
START-UP PROCEDURES........................................................35
General ....................................................................................35
Prime Condensate Trap With Water ......................................35
Purge Gas Lines......................................................................35
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. 535-763
Tab 6a 8a
Deluxe 4-Way Multipoise Fixed-Capacity
Direct-Vent Condensing Gas Furnace
A93040
AIRFLOW
Adjustments.............................................................................36
Check Safety Controls ............................................................40
Checklist..................................................................................42
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 clean-
ing and replacing air filters. All other operations must be per-
formed by trained service personnel. When working on heating
equipment, observe precautions in literature, on tags, and on labels
attached to or shipped with unit and other safety precautions that
may apply.
Printed in U.S.A.
Form 58MXA-11SI
EFFICIENCY
RATING
CERTIFIED
®
REGISTERED QUALITY SYSTEM
AIRFLOW
UPFLOW
HORIZONTAL
LEFT
DOWNFLOW
AIRFLOW
Fig. 1-Multipoise Orientations

SAFETY CONSIDERATIONS

Pg 1
10-00
58MXA
CERTIFIED
HORIZONTAL
RIGHT
AIRFLOW
A93041
Replaces: 58MXA-11SI

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  • Page 1: Table Of Contents

    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. 535-763 Printed in U.S.A. Form 58MXA-11SI Pg 1 10-00 Replaces: 58MXA-11SI Tab 6a 8a...

  • Page 2: Introduction

    INTRODUCTION When you see this symbol on the unit and in instructions or The model 58MXA, Series 141 and 151 furnaces are available in manuals, be alert to the potential for personal injury. sizes 40,000 through 138,000 Btuh input capacities.
  • Page 3 User’s Information Manual listed gas conversion kit is required to convert furnace for use with Warranty Certificate propane gas. The 58MXA 040 through 120 size units are C.S.A. Loose Parts Bag includes Quantity (A.G.A. and C.G.A.) approved for use in manufactured (mobile) Pressure tube extension homes when factory accessory conversion kit is used.

  • Page 4: Codes And Standards

    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 DOWNFLOW AND ALTERNATE HORIZONTAL UPFLOW APPLICATIONS APPLICATIONS...

  • Page 5: Electrostatic Discharge (Esd) Precautions

    Installation must comply with regulations of serving gas supplier CONDENSATE TRAP LOCATION (FACTORY-SHIPPED ORI- and local building, heating, plumbing or other codes in effect in the ENTATION) area in which installation is made. In the absence of local codes, The condensate trap is factory installed in the blower shelf and installation must conform with the NFGC in the United States and factory connected for 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 INDUCER HOUSING DRAIN TUBE (BLUE) (MOLDED) DRAIN TUBE (BEHIND COLLECTOR BOX...

  • Page 7: Downflow Applications

    COLLECTOR BOX DRAIN TUBE (BLUE) PLUG PLUG COLLECTOR BOX TUBE (GREEN) COLLECTOR BOX DRAIN TUBE (BLUE) COLLECTOR BOX EXTENSION TUBE COLLECTOR BOX TUBE (PINK) COLLECTOR BOX TUBE (PINK) COLLECTOR BOX TUBE (GREEN) COLLECTOR BOX COLLECTOR BOX DRAIN TUBE (BLUE EXTENSION TUBE &...

  • Page 8: Horizontal Left (Supply-Air Discharge) Applications

    (b.) Connect larger diameter drain tube (factory- 4. Extend collector box pressure tube (pink label) which was supplied in loose parts bag) to drain tube cou- previously connected to pressure switch by splicing to remain- pling, extending collector box drain tube for ing small diameter tube (factory-supplied in loose parts bag).

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

    PLUG COLLECTOR BOX AUXILIARY "J" BOX DRAIN TUBE (BLUE AND WHITE STRIPED) CONDENSATE COLLECTOR BOX TRAP TUBE (GREEN) INDUCER HOUSING COLLECTOR DRAIN TUBE (VIOLET) BOX EXTENSION COLLECTOR BOX DRAIN TUBE DRAIN TUBE (BLUE) COLLECTOR BOX EXTENSION TUBE DRAIN TUBE COUPLING COLLECTOR BOX TUBE (PINK) RELOCATE TUBE BETWEEN BLOWER SHELF AND INDUCER HOUSING FOR 040, 060, AND 080 HEATING INPUT FURNACES...
  • 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) AUXILARY “J” BOX RELOCATED HERE CONDENSATE TRAP COLLECTOR BOX DRAIN TUBE (BLUE AND WHITE STRIPED) INDUCER HOUSING DRAIN TUBE (VIOLET) COLLECTOR BOX EXTENSION TUBE A00214 →...
  • Page 12 Locate furnace as close to center of air distribution system as possible. FRONT LEVEL (0″) FRONT FRONT LEVEL (0″) ″ MAX ⁄ BACK ″ MAX ⁄ UPFLOW OR DOWNFLOW HORIZONTAL FRONT A93025 A93043 NOTE: For proper furnace operation, install furnace so that it is level or pitched forward within 1/2 in.

  • Page 13: Furnace Location Relative To Cooling Equipment

    If these furnaces are installed in an unconditioned space When furnace is installed in a residential garage, it must be where the ambient temperatures may be 32°F or lower, freeze installed so that burners and ignition sources are located a protection measures must be taken.

  • Page 14: Installation In Upflow And Downflow Applications

    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. Step 2—Installation in Upflow and Downflow Applica- tions NOTE: For downflow applications, this furnace is approved for PLENUM use on combustible flooring when special base (available from OPENING...

  • Page 15: Installation In Horizontal Applications

    all-thread rod) to desired length. Use 1 X 3/8-in. flat washers, 3/8-in. lock washers, and 3/8-in. nuts on hanger rods as shown in FURNACE Fig. 17. Dimples are provided for hole locations. (See Fig. 2.) (OR COIL CASING WHEN USED) PERFORATED DISCHARGE DUCT FLANGE...
  • Page 16 ⁄ -IN. ROD ANGLE ″ ⁄ IRON OR EQUIVALENT ALTERNATE SUPPORT LOCATION 4-IN. MIN 8-IN. MAX DRAIN (A) ROD LOCATION USING DIMPLE LOCATORS -IN. MAX -IN. HEX NUT (SEE DIMENSIONAL ALTERNATE SUPPORT & WASHER (4) DWG FOR LOCATION FROM BACK LOCATIONS) REQD PER ROD NOTES:...

  • Page 17: Filter Arrangement

    Step 5—Filter Arrangement WASHABLE FILTER FILTER Never operate unit without a filter or with filter access door RETAINER removed. Failure to follow this warning can cause fire, personal injury, or death → The air filter arrangement will vary due to application, furnace orientation, and filter type.

  • Page 18: Bottom Closure Panel

    NOTE: Remove and discard bottom closure panel when bottom inlet is used. Use proper length of pipe to avoid stress on gas control Step 6—Bottom Closure Panel manifold. Failure to follow this warning could result in a gas These furnaces are shipped with bottom enclosure panel installed leak resulting in fire, explosion, personal injury, or death.

  • Page 19: Electrical Connections

    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...

  • Page 20: Direct Venting

    A00212 Step 9—Direct Venting Fig. 23—Relocating J-Box The 58MXA Furnaces require a dedicated (one 58MXA furnace only) direct-vent system. In a direct-vent system, all air for 2. Rotate J-box 180° and attach box to left side, using holes combustion is taken directly from outside atmosphere, and all flue provided.
  • Page 21 SCHEMATIC DIAGRAM TO 115VAC FIELD DISCONNECT (WHEN USED) LGPS BLOWER (NATURAL GAS & PROPANE) SEE NOTE #10 EQUIPMENT GROUND DELAY NOTE #4 (NOT ON ALL MODELS) BLOWER OFF DELAY SPARE-2 MED LO SELECTION CHART TEST/TWIN NOTE #6 HEAT MED HI 90 SEC START SPARE-1...
  • Page 22 BLOWER OFF DELAY ADJUSTMENT SWITCH 24-V THERMOSTAT TERMINALS TEST/TWIN 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 BLOWER SPEED HEAT SELECTION TERMINALS SPARE-2 EAC-1 (BLACK) EAC-ELECTRONIC AIR CLEANER TERMINALS (115-VAC 1 AMP MAX) 115-VAC (L1) EAC-2 (WHITE)
  • Page 23 ‡ 36 in. to electric meter in Canada only. result in safety and performance related problems. 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 given to prevailing winds, location, and other conditions which may cause recirculation of the appliance’s own flue products or the flue products of...
  • Page 24 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.
  • Page 25 b. Reposition combustion-air intake housing plug fitting in COMBUSTION – AIR appropriate unused intake housing connection. INTAKE HOUSING 3/8" ID TUBE BURNER c. If required, insert perforated disk assembly (factory- supplied in loose parts bag) in intake housing where combustion-air intake pipe will be connected. If half disk set is required, install with shoulder of disk against stop in combustion-air inlet.
  • Page 26 TABLE 6—MAXIMUM ALLOWABLE PIPE LENGTH (FT) NUMBER OF 90° ELBOWS TERMINATION PIPE DIA ALTITUDE (FT) 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 080-20...
  • Page 27 TABLE 6—MAXIMUM ALLOWABLE PIPE LENGTH (FT) (Continued) NUMBER OF 90° ELBOWS TERMINATION PIPE DIA ALTITUDE (FT) 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 080-16 Concentric 2-1/2...
  • Page 28 TABLE 6—MAXIMUM ALLOWABLE PIPE LENGTH (FT) (Continued) NUMBER OF 90° ELBOWS TERMINATION PIPE DIA ALTITUDE (FT) 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 080-16 8001 to 9000‡...
  • Page 29 MULTIVENTING AND VENT TERMINATIONS 4. Disassemble loose pipe fittings. Clean and cement using same When 2 or more 58MXA Furnaces are vented near each other, procedures as used for system piping. each furnace must be individually vented. NEVER common vent ROOF 18″...

  • Page 30: Condensate Drain

    Fig. 33—Sidewall Termination of 12 in. or More Fig. 34—Sidewall Termination of Less than 12 in. or breach vent 58MXA furnaces. When 2 or more 58MXA furnaces are vented near each other, 2 vent terminations may be Unit must not be installed, operated, and then turned off and installed as shown in Fig.
  • Page 31 TABLE 7—MAXIMUM ALLOWABLE EXPOSED VENT PIPE LENGTH (FT) WITH AND WITHOUT INSULATION IN WINTER DESIGN TEMPERATURE AMBIENT* WINTER DESIGN MAX PIPE UNIT WITHOUT WITH 3/8–IN. OR TEMPERATURE DIAMETER SIZE INSULATION THICKER INSULATION† (°F) (IN.) * Pipe length (ft) specified for maximum pipe lengths located in unconditioned spaces. Pipes located in unconditioned space cannot exceed total allowable pipe length as specified in Table 6.

  • Page 32: Sequence Of Operation

    A96128 Fig. 35—Rooftop Termination (Dimension “A” is Touching or 2-in. Maximum Separation) connections (furnace, A/C, or humidifier) must be terminated into HEATING MODE an open or vented drain as close to the respective equipment as When wall thermostat calls for heat, R-W circuit closes. Furnace possible to prevent siphoning of the equipment’s drain.
  • Page 33 VENT VENT 1″ MAXIMUM (TYP) COMBUSTION AIR VENT COMBUSTION VENT A93056 Fig. 36—Concentric Vent and Combustion-Air Roof Termination (Dimension “A” is Touching or 2-in. Maximum Separation) A93057 Fig. 37—Concentric Vent and Combustion-Air Side Termination (Dimension “A” is Touching or 2-in. Maximum Separation) VENT VENT...
  • Page 34 COMPONENT TEST Component Test Sequence NOTE: All components are functionally operated except the gas valve. When component test is initiated, the following sequence of events occurs: 1. LED flashes a status code 4 times. 2. Inducer motor starts and continues to run for remainder of OPEN STAND component test.

  • Page 35: Start-Up Procedures

    NOTE: If TEST to C terminals are jumpered longer than 2 sec, LED will flash rapidly, and retrieval request will be ignored. 5. When above items have been completed, the component test sequence will occur as described in the Component Test Sequence section above.

  • Page 36: Adjustments

    ORIFICE c. Verify furnace model and size. Table 8 can only be used for model 58MXA furnaces with heating sizes of 040 through 120. Table 9 can only be used for model 58MXA furnaces A93059 with a 140 heating size.
  • Page 37 TABLE 8—MODEL 58MXA 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 PERCENT FOR EACH 1000 FT ABOVE SEA LEVEL) SPECIFIC GRAVITY OF NATURAL GAS...
  • Page 38 TABLE 8—MODEL 58MXA 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 PERCENT FOR EACH 1000 FT ABOVE SEA LEVEL) SPECIFIC GRAVITY OF NATURAL GAS...
  • Page 39 TABLE 8—MODEL 58MXA 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 PERCENT FOR EACH 1000 FT ABOVE SEA LEVEL) SPECIFIC GRAVITY OF NATURAL GAS...

  • Page 40: Check Safety Controls

    TABLE 9—MODEL 58MXA ORIFICE SIZE AND MANIFOLD PRESSURE FOR CORRECT INPUT FOR USE WITH 140 THROUGH 120 SIZE FURNACES ONLY (TABULATED DATA BASED ON 23,000 BTUH PER BURNER, DERATED 2 PERCENT FOR EACH 1000 FT ABOVE SEA LEVEL) SPECIFIC GRAVITY OF NATURAL GAS...
  • Page 41 TABLE 9—MODEL 58MXA ORIFICE SIZE AND MANIFOLD PRESSURE FOR CORRECT INPUT (Continued) FOR USE WITH 140 THROUGH 120 SIZE FURNACES ONLY (TABULATED DATA BASED ON 23,000 BTUH PER BURNER, DERATED 2 PERCENT FOR EACH 1000 FT ABOVE SEA LEVEL) SPECIFIC GRAVITY OF NATURAL GAS...

  • Page 42: Checklist

    TABLE 10–ALTITUDE DERATE MULTIPLIER FOR U.S.A. ALTITUDE PERCENT DERATE MULTIPLIER (FT) OF DERATE FACTOR FOR U.S.A.* 0–2000 1.00 2001–3000 4–6 0.95 3001–4000 6–8 0.93 4001–5000 8–10 0.91 5001–6000 10–12 0.89 6001–7000 12–14 0.87 7001–8000 14–16 0.85 8001–9000 16–18 0.83 9001–10,000 18–20 0.81 * Derate multiplier factor is based on midpoint altitude for altitude range.
  • Page 43 CHECKLIST—INSTALLATION LOAD CALCULATION Condensate Drain _______ Heating Load (Btuh) _______ Unit Level or Pitched Forward Internal Tubing Connections Free _______ Cooling Load (Btuh) _______ of Kinks and Traps External Drain Connection Leak _______ Furnace Model Selection _______ Tight and Sloped Condensate Trap Primed before _______ COMBUSTION AND VENT PIPING...
  • Page 44 Spare White Common Copyright 2000 CARRIER Corp. • 7310 W. Morris St. • Indianapolis, IN 46231 58mxa11si Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book 1 4...

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