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Fig. 19—Wiring Diagram

A01365

LEGEND

ALS1

AUXILIARY LIMIT SWITCH, OVERTEMP. MANUAL RESET, SPST (N.C.)

ALS2

AUXILIARY LIMIT SWITCH, OVERTEMP. AUTO RESET, SPST (N.C.)

BHI / LOR BLOWER MOTOR SPEED CHANGE RELAY, SPDT
BHT / CLR BLOWER MOTOR SPEED CHANGE RELAY, SPDT
BLWM

BLOWER MOTOR, 4 or 5 -SPEED, PERMANENT-SPLIT-CAPACITOR

BLWR

BLOWER MOTOR RELAY, SPST (N.O.)

CAP

CAPACITOR

CPU

MICROPROCESSOR AND CIRCUITRY

DSS

DRAFT SAFEGUARD SWITCH (N.C.)

EAC-1

ELECTRONIC AIR CLEANER CONNECTION (115 VAC, 1 AMP MAX.)

EAC-2

ELECTRONIC AIR CLEANER CONNECTION (COMMON)

FRS1

FLAME ROLLOUT SWITCH OVERTEMP. MANUAL RESET, SPST (N.C.)

FRS2

FLAME ROLLOUT SWITCH OVERTEMP. MANUAL RESET, SPST (N.C.)

FSE

FLAME-PROVING SENSOR ELECTRODE

FU1

FUSE, 3 AMP, AUTOMOTIVE BLADE TYPE, FACTORY INSTALLED

FU2

FUSE, FIELD INSTALLED

GAS VALVE, REDUNDANT LOW-HEAT OPERATORS, 2-STAGE

HPS

HIGH-HEAT PRESSURE SWITCH, SPST (N.O.)

HPSR

HIGH-HEAT PRESSURE SWITCH RELAY, SPST (N.C.)

HSI

HOT-SURFACE IGNITER (115 VAC)

HSIR

HOT-SURFACE IGNITOR RELAY, SPST (N.O.)

HUM

24VAC HUMIDIFIER CONNECTION (0.5 AMP. MAX.)

IDM

INDUCED DRAFT MOTOR, 2-SPEED, SHADED-POLE

IDR

INDUCER MOTOR RELAY, SPST (N.O.)

IHI / LOR

INDUCER MOTOR SPEED CHANGE RELAY, SPDT

ILK

BLOWER DOOR INTERLOCK SWITCH, SPST (N.O.)

JUNCTION BOX

LED

LIGHT-EMITTING DIODE FOR STATUS CODES

LGPS

LOW GAS-PRESSURE SWITCH, SPST (N.O.)

LPS

LOW-HEAT PRESSURE SWITCH, SPST (N.O.)

LIMIT SWITCH, OVERTEMPERATURE-AUTO RESET, SPST (N.C.)

MGVR

MAIN GAS VALVE RELAY, DPST (N.O.)

1 = VALVE

2 = HUMIDIFIER

PL1

12-CIRCUIT CONNECTOR

PL2

9-CIRCUIT CONNECTOR

PL3

3-CIRCUIT IDM CONNECTOR

PL6

2-CIRCUIT HSI CONNECTOR

SW1

HIGH-HEAT-ONLY SWITCH, SPST (MANUAL)

SW2

LOW-HEAT-ONLY SWITCH, SPST (MANUAL)

SW3 & 4

BLOWER-OFF DELAY SETTING SWITCHES,
SPST (MANUAL)

TWINNING JUMPER, SPDT FOR MAIN OR
SECONDARY STATUS (MANUAL CHANGE OVER)

TRAN

TRANSFORMER-115VAC/24VAC

TWIN/TEST

1-CIRCUIT TWINNING BUSS CONNECTOR,

ALSO STATUS CODE RECALL

JUNCTION

TERMINAL

CONTROL TERMINAL

FACTORY POWER WIRING (115VAC)

FACTORY CONTROL WIRING (24VAC)

FIELD POWER WIRING (115VAC)

FIELD CONTROL WIRING (24VAC)

CONDUCTOR ON CONTROL

FIELD WIRING SCREW TERMINAL

FIELD GROUND

EQUIPMENT GROUND

FIELD SPLICE

PLUG RECEPTACLE

NOTES:

1. Use only copper wire between the disconnect switch and

the unit.

2. If any of the original wire, as supplied, must be replaced,

use the same or equivalent type wire.

3. Inducer (IDM) and blower (BLWM) motors contain

internal auto-reset thermal overload switches.

4. Blower motor speed selections are for average

conditions. See Installation Instructions for details on
optimum speed selection.

5. Replace only with a 3-AMP fuse.
6. Auxiliary limit switches (ALS1 & 2) used on some

horizontal and some downflow models.

7. This wire must be connected to furnace sheet metal for

control to prove flame.

8. Factory connected when LGPS not used.

RED

FRS2

FRS1

(WHEN USED)

ALS1

DSS

LGPS

YEL

NOTE #8

LPS

N US

)

(WHEN USED)

NOTE #6

ALS2

SWITCH
1

HEAT
SET-UP
SWITCH
NORM
HI HT
LO HT

BLOWER-
OFF DELAY
(SEC.)

SWITCH

90 SEC

135 SEC

180 SEC
225 SEC

2-STAGE

FURNACE

CONTROL

TTI

BLOWER-OFF DELAY
BLOWER-OFF DELAY
LOW-HEAT ONLY
HIGH-HEAT ONLY

Com
24V

W/W1 Y/Y2

HUM

LED

TWIN

TEST

WHT

HPS

IDM

HSI

ILK

PL6

PL3

PL2

PR1

PR2

COMMON

HI-COOL

HI-GAS

HEAT

EAC-2

EAC-1

LO-GAS
HEAT

SPARE

SEC1

FU1

SEC2

NOTE #4

BLWM

BRN

CAP

TRAN

FUSED DISCONNECT

SWITCH (WHEN REQ’D)

NOTE #1

BLK

WHT

GND

FU2

CONNECTION DIAGRAM

BLWR

TO 115VAC FIELD
DISCONNECT SWITCH

NOTE #1

LO-GAS-HEAT

HI-GAS-HEAT

SPARE

NOTE #4

COMMON

HSIR

EAC-1

EAC-2

HSI

PL2

PR2

115VAC

PR1

TRAN

24VAC

IDR

ILK

IDM

BLWM

BHI / LOR

BHT / CLR

CAP

BRN

PL6

IHI / LOR

SEC1

FU1

NOTE #5

COM

HPSR

1
5
6

N/A

HI-COOL

PL3

SEC2

ALS1

DSS

ALS2

FRS1

(WHEN USED)

FRS2

N/A

MGVR-2

NOTE #8 LPS

(WHEN USED)

TWIN
TEST

W/W1

HUM

TWINNING
JUMPER
TJ

Y/Y2

MGVR-1

NOTE #8

HPS

7
8 N/A

N/A

FSE

NOTE#7

PL1

CPU

LGPS

SW1

9. Symbols are an electrical representation only.
10. BLOWER-ON DELAY: Gas heating 45 seconds,

Cooling/Heat Pump 2 seconds.

11. Cooling/Heat Pump BLOWER-OFF DELAY is 90

seconds.

12. IGNITION-LOCKOUT will occur after four

consecutive unsuccessful trials-for-ignition.
Control will automatically reset after three hours.

13. Control must be grounded at pin 10 of 12-pin

connector.

14. NA - Not Applicable
15. Spare terminal and wire not available on some

applications. Insulate connector if not available.

RED

MED LO

BLU

COM

WHT

BLK

YEL

MED HI

MED

COM

MED

MED LO

NOTE #15

ORN

SPARE

MED HI

SPARE

BLU

NOTE #15

324459-101 REV. D

BLU

BRN

GRY

BRN

WHT

BLK

RED

YEL

BLU

ORN

WHT

BLK

WHT

RED

(NATURAL GAS & PROPANE)

SCHEMATIC DIAGRAM

EQUIPMENT
GROUND

/YEL

GRN/YEL

Содержание 58UXT Series

Страница 1: ...Conditioning Systems NFPA 90B ANSI NFPA 90B In Canada refer to the current edition of the CAN CGA B149 1 and 2 M00 National Standard of Canada Natural Gas and Propane Installation Codes NSCNGPIC 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 ...

Страница 2: ...e and unit sizing Improper installation or misapplication of the furnace can require excessive servicing or cause premature component failure To aid in installation troubleshooting and service a status code label is located on the blower compartment door This label explains how to use the LED status indicator on the furnace control which is viewed through the sight glass on the door Fig 1 Dimensio...

Страница 3: ...y be 0 inches For upflow furnaces bottom clearance may be 0 inches Indicates supply or return sides when furnace is in the horizontal position Line contact only permissible between lines formed by intersections of the Top and two Sides of the furnace jacket and building joists studs or framing 18 inches front clearance required for alcove For single wall vent 6 inches For Type B 1 vent 3 inches 32...

Страница 4: ...ls and many other solvents commonly used in the construction process Excessive exposure to contami nated combustion air will result in safety and performance related problems Do not install furnace in a corrosive or contaminated atmo sphere Make sure all combustion and circulating air require ments are met in addition to all local codes and ordinances This furnace must be installed so the electric...

Страница 5: ...tion ventilation and dilution of flue gases using 1 of the following methods See Fig 5 and Table 2 NOTE In determining free area of an opening the blocking effect of louvers grilles and screens must be considered If free area of louver or grille design is unknown assume that wood louvers have a 20 percent free area and metal louvers or grilles have a 60 percent free area Screens when used must not...

Страница 6: ...ir must also be handled by a duct s sealed to the furnace casing and terminating outside the space containing the furnace Secure ductwork with proper fasteners for type of ductwork used Seal supply and return duct connections to furnace with code approved tape or duct sealer Flexible connections should be used between ductwork and furnace to prevent transmission of vibration Ductwork passing throu...

Страница 7: ...er or a factory specified high efficiency disposable filter see cabinet instructions If installing the filter in the furnace blower compartment deter mine location for the filter and relocate filter retaining wire if necessary After the return air duct has been connected to the furnace install the filter s inside the furnace blower compartment See Fig 7 for side return application and Fig 8 for bo...

Страница 8: ...1 and Fig 11 INSTALL FURNACE 1 Position furnace in desired location 2 Connect gas supply pipe See Fig 11 for typical piping entry 3 Connect supply and return air ducts 4 Install 24 X 24 in sheet metal shield on platform in front of louvered control panel as shown in Fig 11 Step 6 Horizontal Crawlspace Installation The furnace can be installed horizontally with either LH or RH side up In a crawlspa...

Страница 9: ...UDS OR FRAMING CLEARANCE TO COMBUSTIBLE MATERIALS Fig 12 Crawlspace Horizontal Installation A97600 NOTES ANGLE IRON OR EQUIVALENT ROD LOCATION USING DIMPLE LOCATORS SEE DIMENSIONAL DWG FOR LOCATIONS 3 8 IN ROD 1 A 1 In clearance minimum between top of furnace and combustible material 2 The entire length of furnace must be supported when furnace is used in horizontal position 3 8 IN HEX NUT WASHER ...

Страница 10: ...tion of propane gas Install an accessible manual shutoff valve upstream of furnace gas controls and within 72 in of furnace A 1 8 in NPT plugged tapping is provided on the gas valve for test gage connection Installation of an additional 1 8 in NPT plugged tapping acces sible for test gage connection installed immediately upstream of gas supply connection to furnace and downstream of manual shutoff...

Страница 11: ...Canada Natural and Propane Installation Codes CAN CGA B149 1 and 2 M00 in Canada for proper vent sizing and installation requirements After fully assembling the vent connector to the furnace flue collar securely fasten the vent connector to the collar with 2 field supplied corrosion resistant sheet metal screws located 180 degrees apart and midway up the collar The horizontal portion of the ventin...

Страница 12: ... DISCONNECT SWITCH WHEN REQUIRED JUNCTION BOX CONTROL BOX 24 V TERMINAL BLOCK TWO WIRE HEATING ONLY FIVE WIRE 1 STAGE THERMOSTAT TERMINALS FIELD SUPPLIED FUSED DISCONNECT CONDENSING UNIT FURNACE COM R W Y R G C GND GND GND GND GND GND FIELD 24 V WIRING FIELD 115 208 230 460 V WIRING FACTORY 24 V WIRING FACTORY 115 V WIRING 208 230 OR 460 V THREE PHASE 208 230 V SINGLE PHASE WHT BLK WHT BLK W W1 W2...

Страница 13: ...ed and a 2 sec flame proving period begins If the high heat pressure switch HPS fails to close on call for high stage gas heat and the low heat pressure switch LPS closes the furnace operates at low heat gas flow rate until the high heat HPS pressure switch closes d Flame proving When burner flame is proved at flame proving sensor electrode FSE the control CPU begins blower on delay period and con...

Страница 14: ...en inducer motor IDM reduces pressure sufficiently the high heat pressure switch HPS will open The low heat gas valve solenoid GV remains energized as long as low heat pressure switch LPS remains closed The blower motor BLWM switches speed for low gas heat 5 sec after R W2 circuit opens 3 Cooling Mode a Single Speed Cooling Outdoor Unit See Fig 15 for thermostat connections 1 The thermostat closes...

Страница 15: ...to reset thermal overload switches 4 Blower motor speed selections are for average conditions See Installation Instructions for details on optimum speed selection 5 Replace only with a 3 AMP fuse 6 Auxiliary limit switches ALS1 2 used on some horizontal and some downflow models 7 This wire must be connected to furnace sheet metal for control to prove flame 8 Factory connected when LGPS not used RE...

Страница 16: ... EAC 2 are energized with 115v when the blower motor BLWM is operat ing 3 When thermostat is satisfied furnace blower motor BLWM continues operating on high cool speed for an additional 90 sec b Two Speed Heat Pump Cooling 1 The thermostat R to G circuits start the furnace blower motor BLWM on low cool speed The thermostat R to G and Y Y2 circuits start the furnace blower motor BLWM on high cool s...

Страница 17: ... for correct input a Obtain yearly heat value average at installed altitude from local gas supplier b Obtain yearly specific gravity average from local gas supplier c Verify furnace model Table 9 can only be used for model 58UXT furnaces d Find installation altitude in Table 9 NOTE For Canada altitudes of 2000 to 4500 ft use U S A altitudes of 2001 to 3000 ft in Table 9 e Find closest natural gas ...

Страница 18: ... to 3000 or Canada Altitudes 2000 to 4500 775 43 3 4 1 4 43 3 5 1 5 43 3 6 1 5 43 3 7 1 6 43 3 8 1 6 800 44 3 6 1 5 44 3 8 1 6 43 3 4 1 4 43 3 5 1 5 43 3 6 1 5 825 44 3 4 1 4 44 3 5 1 5 44 3 7 1 5 44 3 8 1 6 43 3 4 1 4 850 44 3 2 1 4 44 3 3 1 4 44 3 4 1 5 44 3 6 1 5 44 3 7 1 5 875 45 3 7 1 6 45 3 8 1 6 44 32 1 4 44 3 4 1 4 44 3 5 1 5 900 45 3 5 1 5 45 3 6 1 5 45 3 7 1 6 45 3 8 1 6 44 3 3 1 4 925 4...

Страница 19: ...3 5 1 5 44 3 6 1 5 725 45 3 6 1 5 45 3 7 1 6 45 3 8 1 6 44 3 3 1 4 44 3 4 1 4 750 45 3 4 1 4 45 3 5 1 5 45 3 6 1 5 45 3 7 1 6 45 3 8 1 6 775 45 3 2 1 3 45 3 3 1 4 45 3 4 1 4 45 3 5 1 5 45 3 6 1 5 800 47 3 5 1 5 47 3 6 1 5 45 3 2 1 3 45 3 3 1 4 45 3 4 1 4 825 48 3 8 1 6 47 3 4 1 4 47 3 5 1 5 47 3 7 1 5 45 3 2 1 3 850 48 3 6 1 5 48 3 7 1 6 48 3 8 1 6 47 3 4 1 5 47 3 5 1 5 875 48 3 4 1 4 48 3 5 1 5 4...

Страница 20: ...nifold Pressure High Low Orifice No Manifold Pressure High Low Orifice No Manifold Pressure High Low U S A Only 8001 to 9000 600 45 3 4 1 4 45 3 5 1 5 45 3 6 1 5 45 3 7 1 6 45 3 8 1 5 625 47 3 7 1 6 45 3 2 1 4 45 3 3 1 4 45 3 4 1 4 45 3 5 1 4 650 47 3 4 1 4 47 3 5 1 5 47 3 6 1 5 45 3 2 1 3 45 3 3 1 5 675 48 3 6 1 5 48 3 7 1 6 48 3 8 1 6 47 3 5 1 5 47 3 6 1 6 700 48 3 3 1 4 48 3 5 1 5 48 3 6 1 5 48...

Страница 21: ...altitudes from 2000 to 4500 ft this furnace must be derated 10 percent by an authorized Gas Conver sion Station or Dealer To determine correct input rate for altitude see example above and use 0 82 as derate multi plier factor b Check that gas valve adjustment caps are in place for proper input to be clocked c Obtain yearly heat value average for local gas supply NOTE Be sure heating value of gas ...

Страница 22: ...ry setting med low or med 5 speed blowers only Disconnect the electrical power before changing the speed tap or removing motor lead cap if used on 5 speed motors A failure to follow this warning can cause personal injury NOTE For units with 5 speed motors make sure the unused speed tap is either capped or placed on SPARE terminal on control board before power is restored d To change motor speed se...

Страница 23: ...ailure 2 Check draft safeguard switch The purpose of this control is to permit the safe shutdown of the furnace during certain blocked vent conditions a Disconnect power to furnace and remove vent connector from furnace flue collar Be sure to allow time for vent pipe to cool down before removing b Restore power to furnace and set room thermostat above room temperature c After normal start up allow...

Страница 24: ...e Training plus hands on the products in our labs can mean increased confidence that really pays dividends in faster troubleshooting fewer callbacks Course descriptions and schedules are in our catalog CALL FOR FREE CATALOG 1 800 962 9212 Packaged Service Training Classroom Service Training Copyright 2001 CARRIER Corp 7310 W Morris St Indianapolis IN 46231 58uxt5si Manufacturer reserves the right ...

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