Carrier 58MXA Nstallation, Start-Up, And Operating Instructions
Deluxe 4–way multipoise fixed-capacity
direct vent condensing gas furnace
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- Installation, start-up, and operating instructions manual (52 pages) ,
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Installation, Start-Up, and Operating Instructions
REGISTERED QUALITY SYSTEM
NOTE: Read the entire instruction manual before starting the
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TABLE OF CONTENTS
SAFETY CONSIDERATIONS .....................................................2
INTRODUCTION ..........................................................................2
CODES AND STANDARDS........................................................4
APPLICATIONS............................................................................6
General ......................................................................................6
Upflow Applications.................................................................6
Orientation) ..........................................................................6
Orientation) ..........................................................................6
Orientation) ..........................................................................7
Condensate Trap Field Drain Attachment ..........................7
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. 535-80027
Tab 6a 8a
Deluxe 4-Way Multipoise Fixed-Capacity
A93040
EFFICIENCY
RATING
CERTIFIED
CERTIFIED
®
Printed in U.S.A.
Direct Vent Condensing Gas Furnace
Pressure Switch Tubing.......................................................7
(Unused) Drain Connections...............................................7
Condensate Trap Freeze Protection ....................................7
Downflow Applications ............................................................7
Condensate Trap Location ..................................................7
Condensate Trap Tubing .....................................................7
Condensate Trap Field Drain Attachment ..........................8
Pressure Switch Tubing.......................................................8
Condensate Trap Freeze Protection ....................................9
Applications ..............................................................................9
Condensate Trap Location ..................................................9
Condensate Trap Tubing .....................................................9
Condensate Trap Field Drain Attachments ......................10
Pressure Switch Tubing.....................................................10
Condensate Trap Freeze Protection ..................................10
Construct a Working Platform ..........................................10
Applications ............................................................................10
Condensate Trap Location ................................................10
Condensate Trap Tubing ...................................................10
Condensate Trap Field Drain Attachment ........................11
Pressure Switch Tubing.....................................................11
Condensate Trap Freeze Protection ..................................11
Construct a Working Platform ..........................................11
LOCATION..................................................................................12
General ....................................................................................12
Equipment ...............................................................................13
Hazardous Locations...............................................................13
INSTALLATION .........................................................................13
Leveling Legs (If Desired) .....................................................13
Applications ............................................................................14
Installation in Horizontal Applications ..................................14
Air Ducts.................................................................................15
General Requirements .......................................................15
Ductwork Acoustical Treatment .......................................16
Supply Air Connections ....................................................16
Return Air Connections.....................................................17
Filter Arrangement..................................................................17
Bottom Closure Panel.............................................................17
Gas Piping...............................................................................17
Electrical Connections ............................................................19
115-v Wiring.....................................................................19
24-v Wiring.......................................................................20
Accessories ........................................................................20
Direct Venting.........................................................................20
Systems ..............................................................................20
Combustion-Air and Vent Piping .....................................22
Termination Kit Installation ..............................................26
Form 58MXA-12SI
58MXA
Pg 1
9-01
Replaces: 58MXA-11SI
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Summary of Contents for Carrier 58MXA
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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. 535–80027 Printed in U.S.A. Form 58MXA-12SI Pg 1 9-01 Replaces: 58MXA-11SI Tab 6a 8a... -
Page 2: Safety Considerations
Check Primary Limit Control ...........43 conversion kit is required to convert furnace for use with propane Check Pressure Switch ............43 gas. The 58MXA 040 through 120 size units are C.S.A. (A.G.A. Checklist..................44 and C.G.A.) approved for use in manufactured (mobile) homes when factory accessory conversion kit is used. - Page 3 ⁄ ⁄ " " ⁄ ⁄ " " AIRFLOW ⁄ ⁄ " " ⁄ " ⁄ " ⁄ " ⁄ ⁄ ⁄ 19" " " " 2-IN. COMBUSTION- ⁄ " CONDENSATE DRAIN AIR CONN OUTLET OUTLET TRAP LOCATION (DOWNFLOW & CONDENSATE DRAIN HORIZONTAL LEFT) 2-IN.
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Page 4: Codes And Standards
TUBE ROUTING Furnace is shipped from factory in upflow configuration. Pressure tube and drain tube routing MUST match the diagrams below. Tube location when used in UPFLOW application Condensate Trap on LEFT Condensate Trap; Factory Installed Side Optional in Blower Shelf BURNER ENCLOSURE (Blower access panel removed) BURNER ENCLOSURE... -
Page 5: Electrostatic Discharge (Esd) Precautions
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: Applications
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: Condensate Trap Location (Alternate Upflow Orientation).7
c. Install drain tube coupling grommet (factory-supplied in CONDENSATE TRAP FIELD DRAIN ATTACHMENT loose parts bag) in selected casing hole. Refer to Condensate Drain section for recommendations and d. Slide drain tube coupling (factory-supplied in loose parts procedures. bag) through grommet ensuring long end of coupling faces PRESSURE SWITCH TUBING blower. -
Page 8: Condensate Trap Field Drain Attachment
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 9: Condensate Trap Freeze Protection
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: Condensate Trap Field Drain Attachments
a. Install drain tube coupling (factory-supplied in loose parts bag) into collector box drain tube (blue label) which was The condensate trap MUST be installed below furnace. See previously connected to condensate trap. Fig. 4 for dimensions. The drain connection to condensate b. -
Page 11: Condensate Trap Field Drain Attachment
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 12: 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 Fig. -
Page 13: Furnace Location Relative To Cooling Equipment
If these furnaces are installed in an unconditioned space FRONT where the ambient temperatures may be 32°F or lower, freeze protection measures must be taken. (See Fig. 15.) Provide ample space for servicing and cleaning. Always comply with minimum fire protection clearances shown on units clearance and combustibles label. -
Page 14: Installation In Upflow And Downflow Applications
″ ⁄ ″ ⁄ ″ ⁄ PLENUM OPENING ″ ⁄ FLOOR OPENING ″ ⁄ ″ ⁄ ″ ⁄ ″ ⁄ A96283 A89014 Fig. 18—Floor and Plenum Opening Dimensions Fig. 17—Leveling Legs 4. Adjust outside nut to provide desired height, and tighten inside FURNACE nut to secure arrangement. -
Page 15: Air Ducts
Table 1—Opening Dimensions (in.) FURNACE PLENUM OPENING FLOOR OPENING CASING APPLICATION WIDTH Upflow Applications 24–1/8 16–5/8 24–3/4 Downflow Applications on Non-Combustible Flooring 15-7/8 16-1/2 19-5/8 Downflow Applications on Combustible Flooring Using KGASB Subbase 15-1/8 16-3/4 20-3/8 Furnace with or without CD5 or CK5 Coil Assembly or 17-1/2 KCAKC Coil Box Downflow Applications on Combustible Flooring NOT Using... -
Page 16: Ductwork Acoustical Treatment
SMACNA construction 18 standard on fibrous glass ducts. Both acoustical lining and fibrous ductwork shall comply with NFPA PERFORATED DISCHARGE DUCT 90B as tested by UL Standard 181 for Class 1 Rigid air ducts. FLANGE SUPPLY AIR CONNECTIONS Connect supply-air duct to 3/4-in. flange on furnace supply-air outlet. -
Page 17: Return Air Connections
cut main furnace casing to attach supply side air duct, humidifier, or other accessories. All accessories MUST be connected external For airflow requirements above 1800 CFM, see Air Delivery to furnace main casing. table in Product Data literature for specific use of single side RETURN AIR CONNECTIONS inlets. - Page 18 ⁄ -IN. WIDE CASINGS ONLY: INSTALL FIELD-SUPPLIED Gas valve shutoff switch MUST be facing forward or tilted FILTER FILLER STRIP upward. Failure to follow this warning could result in UNDER FILTER. property damage or death. 3 ″ ″ Never purge a gas line into a combustion chamber. Never use matches, candles, flame, or other sources of ignition for 1 ″...
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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: 24-V Wiring
EAC terminals may be added if humidifier operation is desired during blower operation. Step 9—Direct Venting The 58MXA furnaces require a dedicated (one 58MXA furnace only) direct-vent system. In a direct-vent system, all air for combustion is taken directly from outside atmosphere, and all flue products are discharged to outside atmosphere. - 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...
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Page 22: Combustion-Air And Vent Piping
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 NOTES: Other gas appliances with their own venting system may also use 1. If installing 2 adjacent 58MXA furnaces, refer to Multiventing and Vent the abandoned chimney as a raceway providing it is permitted by Terminations section for proper vent configurations.
- Page 24 → Table 6—Approved Combustion-Air and Vent Pipe, Fitting and Cement Materials SPECIFICATION MATERIAL PIPE FITTINGS SOLVENT CEMENT AND PRIMERS DESCRIPTION (MARKED ON MATERIAL) D1527 Pipe — — Schedule-40 D1785 Pipe — — Schedule-40 Solvent D2235 For ABS — — For ABS Cement D2241 Pipe...
- Page 25 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.
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Page 26: Concentric Vent And Combustion-Air Termination Kit Installation
2. Attach vent pipe as follows: 9. While cement is still wet, twist pipe into socket with 1 /4 turn. Be sure pipe is fully inserted into fitting socket. a. Determine location of vent pipe connection to inducer housing as shown in Fig. 33 for application. 10. - Page 27 Table 7—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 28 Table 7—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 29 Table 7—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‡...
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Page 30: Multiventing And Vent Terminations
6. Check required dimensions as shown in Fig. 37 or 38. MULTIVENTING AND VENT TERMINATIONS When 2 or more 58MXA Furnaces are vented near each other, each furnace must be individually vented. NEVER common vent or breach vent 58MXA furnaces. When 2 or more 58MXA furnaces are vented near each other, 2 vent terminations may be installed as shown in Fig. -
Page 31: Condensate Drain
An external trap is not required when connecting the field drain to OVERHANG OR ROOF this condensate trap. The field drain connection (condensate trap or drain tube coupling) is sized for l/2-in. CPVC, 1/2-in. PVC, or 5/8-in. ID tube connection. 12″... - Page 32 Table 8—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 7.
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Page 33: Sequence Of Operation
VENT OPEN STAND PIPE FOR A/C OR COMBUSTION AIR HUMIDIFIER DRAIN COMBUSTION AIR A96129 TO OPEN Fig. 44—Sidewall Termination of 12 in. of Less DRAIN (Dimension “A” is Touching or 2-in. Maximum Separation) A94054 Fig. 46—Example of Field Drain Attachment VENT CONDENSATE TRAP COMBUSTION AIR... -
Page 34: Cooling Mode
it is ignited. After 5 sec, ignitor is de-energized and a 2-sec blower shuts off until end of ignitor warm up and trial for ignition flame-sensing period begins. periods (a total of 24 sec). Blower restarts at heating speed. HUM terminal on control center is energized with gas valve. When R-W thermostat call disappears, control completes inducer See Accessories - Humidifier section. -
Page 35: Start-Up Procedures
5. When above items have been completed, the component test Step 2—Prime Condensate Trap With Water sequence will occur as described in the Component Test Sequence section above. NOTE: Be sure to record the status code which is flashed 4 times Condensate trap must be PRIMED or proper draining may not at start of component test for further troubleshooting. - Page 36 Verify furnace model and size. Table 9 can only be used for model 58MXA furnaces with heating sizes of 040 through Fig. 50—Redundant Automatic Gas Valve 120. Table 10 can only be used for model 58MXA furnaces with a 140 heating size. c. Turn adjusting screw, counterclockwise (out) to decrease d.
- Page 37 Table 9—Model 58MXA Orifice Size and Manifold Pressure for Correct Input for Use With 040 Through 120Size 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 9—Model 58MXA Orifice Size and Manifold Pressure for Correct Input (Continued) for Use With 040 Through 120Size 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 9—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 Table 10—Model 58MXA Orifice Size and Manifold Pressure for Correct Input for Use With 140 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 41 Table 10—Model 58MXA Orifice Size and Manifold Pressure for Correct Input (Continued) for Use With 140 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 42 b. Turn off all other gas appliances and pilots. c. Start furnace and let operate for 3 minutes. d. Measure time (in sec) for gas meter test dial 1 revolution. e. Refer to Table 12 for cu ft of gas per hr. f.
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Page 43: Set Temperature Rise
Table 14—Blower Off Delay Setup Switch Position EXAMPLE: (0-2000 ft altitude) Furnace input from rating plate is 100,000 Btuh. DESIRED HEATING SETUP SWITCH POSITION MODE BLOWER OFF Btu heating input = Btu/cu ft X cu ft/hr SW-1 SW-2 DELAY (SEC) Heating value of gas = 975 Btu/cu ft Time for 1 revolution of 2-cu ft dial = 70 sec Gas rate = 103 cu ft/hr (from Table 12) -
Page 44: Checklist
Low-Ambient Exposed Pipes _______ Pressure Switch Copyright 2001 CARRIER Corp. • 7310 W. Morris St. • Indianapolis, IN 46231 58mxa12si Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.