Specifications

ManualsBrandsCarrier ManualsHeat PumpEWQ024

Wiring Diagrams

NOTE: This literature applies to units produced after 11/3/96

(software version 2.0 or greater)

DIAGRAM INDEX

UNIT LABEL DIAGRAM

Unit Voltage

Label

Diagram Type

Serial

Number

Effective

Label

Diagram

Figure

No.

48EJ,EW024-034

ALL

Component Arrangement 3497F 48EJ500730 1

120-V Control Circuit 1597F 48EJ501531 2

24-V Control Circuit 3497F 48EJ500387 3

208/230-3-60 Power Schematic 2996F 48EJ500727 4

460-3-60 Power Schematic 2996F 48EJ500727 4

575-3-60 Power Schematic 2996F 48EJ500907 5

48EK,EY024-034

ALL

Component Arrangement 3497F 48EJ500730 1

120-V Control Circuit 1597F 48EJ501532 6

24-V Control Circuit 2698F 48EJ500729 7

208/230-3-60 Power Schematic 2996F 48EJ500727 4

460-3-60 Power Schematic 2996F 48EJ500727 4

575-3-60 Power Schematic 2996F 48EJ500907 5

50EJ,EW024-034

ALL

Component Arrangement 3497F 48EJ500730 1

120-V Control Circuit 1597F 48EJ501531 2

24-V Control Circuit 1897F 48EJ500900 8

208/230-3-60 Power Schematic 2996F 48EJ500727 4

460-3-60 Power Schematic 2996F 48EJ500727 4

575-3-60 Power Schematic 2996F 48EJ500907 5

380-3-60 Power Schematic 2996F 48EJ500908 9

400-3-50 Power Schematic 2996F 48EJ500908 9

50EK,EY024-034

ALL

Component Arrangement 3497F 48EJ500730 1

120-V Control Circuit 1597F 48EJ501532 6

24-V Control Circuit 2698F 48EJ500901 10

208/230-3-60 Power Schematic 2996F 48EJ500727 4

460-3-60 Power Schematic 2996F 48EJ500727 4

575-3-60 Power Schematic 2996F 48EJ500907 5

380-3-60 Power Schematic 2996F 48EJ500908 9

400-3-50 Power Schematic 2996F 48EJ500908 9

48EJ,EW038-048

ALL

Component Arrangement 1198F 48EJ501527 11

120-V Control Circuit 1597F 48EJ501531 2

24-V Control Circuit 3497F 48EJ500387 3

208/230-3-60 Power Schematic 1597F 48EJ501533 12

460-3-60 Power Schematic 1597F 48EJ501533 12

575-3-60 Power Schematic 2996F 48EJ500909 13

48EJ,EY038-048

ALL

Component Arrangement 1198F 48EJ501527 11

120-V Control Circuit 1597F 48EJ501532 6

24-V Control Circuit 2698F 48EJ500729 7

208/230-3-60 Power Schematic 1597F 48EJ501533 12

460-3-60 Power Schematic 1597F 48EJ501533 12

575-3-60 Power Schematic 2996F 48EJ500909 13

48/50EJ,EK,EW,EY024-068

50EJQ,EWQ024,028

Gas Heating/Electric Cooling

Electric Cooling and Heat Pump Units (50/60 Hz)

Manufacturer reserves the right to discontinue, or change at any time, speciﬁcations or designs without notice and without incurring obligations.

Book 1 1 1

Tab 1a1b5a

PC 111 Catalog No. 564-826 Printed in U.S.A. Form 48/50E-2W Pg 1 9-98 Replaces: 48/50E-1W

Summary of content (52 pages)

PAGE 1
48/50EJ,EK,EW,EY024-068 50EJQ,EWQ024,028 Gas Heating/Electric Cooling Electric Cooling and Heat Pump Units (50/60 Hz) Wiring Diagrams NOTE: This literature applies to units produced after 11/3/96 (software version 2.
PAGE 2
DIAGRAM INDEX (cont) UNIT LABEL DIAGRAM Unit Voltage ALL 50EJ,EW038-048 208/230-3-60 460-3-60 575-3-60 380-3-60 400-3-50 ALL 50EJ,EY038-048 20/230-3-60 460-3-60 575-3-60 380-3-60 400-3-50 ALL 48EJ,EW054-068 208/230-3-60 460-3-60 575-3-60 ALL 48EK,EY054-068 208/230-3-60 460-3-60 575-3-60 ALL 50EJ,EW054-068 208/230-3-60 460-3-60 575-3-60 380-3-60 400-3-50 ALL 50EK,EY054-068 208/230-3-60 460-3-60 575-3-60 380-3-60 400-3-50 ALL 50EJQ,EWQ024,028 208/230-3-60 460-3-60 Label Diagram Type Component
PAGE 3
DIAGRAM INDEX (cont) ACCESSORIES Item Power Exhaust (Constant Volume and Modulating) Base Control Board Expansion Board Electric Heat MotormasterT III Head Pressure Control Device Remote Control Panel Heat Interlock Relay Field-Control Remote Start/Stop Enthalpy Control LID-2B Interface Space Temperature Averaging T-55 Space Temperature Sensor T-56 Space Temperature Sensor Service Tool Wiring Supply-Air Temperature Reset Smoke Detector VFD Control Figure No.
PAGE 4
stage heat, both induced-draft motors operate, both gas valves are energized, and both IGC boards initiate spark. All of the gas heating control is performed through the IGC boards (located in the heating section). The base module board serves only to initiate and terminate heating operation. The base module board is powered by 24 vac. When the thermostat or room sensor calls for heating, power is sent from the base module board to W on each of the IGC boards.
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IAQ (indoor air quality) unoccupied position (generally set to zero in the Unoccupied mode). The duct pressure sensor will signal to the variable frequency drive to operate at full speed. When the call for heat is satisfied, the heaters will deenergize. NOTE: The HIR is not needed in a DAV system. If the unit is in the Unoccupied mode, the indoor-fan motor will deenergize and the outdoor-air damper will move to the closed position (if open).
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Table 2 — VFD Supply-Air Pressure Set Point Space Temperature Reset Sensor (VAV Only) — An accessory space temperature sensor (T-55 or T-56 with- PRESSURE in. wg kPa 0.00 0.000 0.25 0.062 0.50 0.124 0.75 0.187 1.00 0.249 1.25 0.311 1.50 0.373 1.75 0.435 2.00 0.498 2.25 0.560 2.50 0.622 2.75 0.684 3.00 0.747 3.25 0.809 3.50 0.871 out offset) is required.
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heat is energized, energizing heat relay (HR2) and reversing valve solenoids (RVS1 and 2). Compressor no. 1 and 2, indoor and outdoor-fan motors start, and the outdoor-air damper will move to the Unoccupied IAQ position (generally set to zero in the Unoccupied mode). The IAQ feature is enabled through system software. Upon a call for additional heat (if equipped with electric heaters), the second stage of heat is energized.
PAGE 8
which may be changed through network access software. To work properly, the IAQ sensor high and low reference points for the sensor that is used must match the configured values. The expansion board reacts to a 4 to 20 mA signal from the IAQ sensor. The low reference (4 mA output) must be configured to the minimum IAQ sensor reading. The high reference (20 mA output) must be configured to the maximum IAQ sensor reading. The IAQ sensor can be configured to either low or high priority.
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I/O CHANNEL DESIGNATIONS BASE MODULE — CV TERMINAL NO. T1-2 T3-4 T5-6 T7-8 T9-10 T11-12 T13-14 T15-16 T17-25 T18-25 T19-25 T20-25 T21-25 T22-25 ASSIGNMENT TERMINAL NO.
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LEGEND AHA BP BPS BR C CAP CB CC CCB CCH CCN CLG COM COMP COMPR CR CV D DFT DIP DM DP EC EQUIP FLA FPT FU GND GRD GVR HC HIR HPS — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — Adjustable Heat Anticipator Building Pressure Bypass Switch Burner Relay Contactor, Compressor Capacitor Circuit Breaker Cooling Compensator Control Circuit Breaker Crankcase Heater Carrier Comfort Network Cooling Communication Compressor Motor Compressor Motor Control Relay Constant Volume Diode Defrost Thermosta
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FACTORY SETTINGS OF MODULATING POWER EXHAUST SEQUENCERS OFF ON OFF ON Offset DIFF Voltage Voltage Static Static Stage 1 50% 3% 6.0 6.3 0.00 0.04 (PES1) Stage 2 55% 3% 6.5 6.8 0.06 0.10 (PES2) Stage 3 60% 3% 7.0 7.3 0.12 0.16 (PES3) Stage 4 64% 3% 7.4 7.7 0.18 0.
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Fig.
PAGE 13
Fig.
PAGE 14
TABLE A The Following Compressors Have Two Parallel Wires Run from TB1 to the Compressors Compressor Wire Voltage Model Quantity 06D-537 208/230-3-60 2 TABLE B The Following Fan Motors Have Two Parallel Wires Run from TB1 to the Fan Motors Indoor Wire Voltage Motor Quantity 20 Hp 208/230-3-60 2 Fig.
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Fig.
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Fig.
PAGE 17
TABLE A For Software Version 1.0 Connect Between R and Y1 For Software Version 2.0 Connect Between R and W1 Fig.
PAGE 18
TABLE A For Software Version 1.0 Connect Between R and Y1 For Software Version 2.0 Connect Between R and W1 Fig.
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Fig.
PAGE 20
TABLE A For Software Version 1.0 Connect Between R and Y1 For Software Version 2.0 Connect Between R and W1 Fig.
PAGE 21
VFD SET POINTS FOR SUPPLY AIR PRESSURE Pressure Control VFD in. wg Output mA Set Point 0.00 4.00 0.0 0.25 4.80 3.0 0.50 5.60 6.0 0.75 6.40 9.0 1.00 7.20 12.0 1.25 8.00 15.0 1.50 8.80 18.0 1.75 9.60 21.0 2.00 10.40 24.0 2.25 11.20 27.0 2.50 12.00 30.0 2.75 12.80 33.0 3.00 13.60 36.0 3.25 14.40 39.0 3.50 15.20 42.0 21 BASE MODULE CONTROL BOARD DIP SWITCH ASSIGNMENTS (VERSION 1.
PAGE 22
TABLE A The Following Compressors Have Two Parallel Wires Run from TB1 to the Compressors Compressor Wire Voltage Model Quantity 06D-537 208/230-3-60 2 06E-250 208/230-3-60 2 06E-265 208/230-3-60 2 TABLE B The Following Fan Motors Have Two Parallel Wires Run from TB1 to the Fan Motors Indoor Wire Voltage Motor Quantity 20 Hp 208/230-3-60 2 25 Hp 208/230-3-60 2 30 Hp 208/230-3-60 2 Fig.
PAGE 23
Fig.
PAGE 24
Fig.
PAGE 25
VFD SET POINTS FOR SUPPLY AIR PRESSURE Pressure Control VFD in. wg Output mA Set Point 0.00 4.00 0.0 0.25 4.80 3.0 0.50 5.60 6.0 0.75 6.40 9.0 1.00 7.20 12.0 1.25 8.00 15.0 1.50 8.80 18.0 1.75 9.60 21.0 2.00 10.40 24.0 2.25 11.20 27.0 2.50 12.00 30.0 2.75 12.80 33.0 3.00 13.60 36.0 3.25 14.40 39.0 3.50 15.20 42.
PAGE 26
Fig.
PAGE 27
Fig.
PAGE 28
TABLE A The Following Compressors Have Two Parallel Wires Run from TB1 to the Compressors Compressor Wire Voltage Model Quantity 06E-250 208/230-3-60 2 TABLE B The Following Fan Motors Have Two Parallel Wires Run from TB1 to the Fan Motors (Not Shown on Label Diagram) Indoor Wire Voltage Motor Quantity 20 Hp 208/230-3-60 2 25 Hp 208/230-3-60 2 TABLE C The Following Fan Motors Have Two Parallel Wires Run from TB1 to IFCB (Not Shown on Label Diagram) Indoor Wire Voltage Motor Quantity 30 Hp 208/230-3-60
PAGE 29
Fig.
PAGE 30
Fig.
PAGE 31
Fig.
PAGE 32
Fig.
PAGE 33
Fig.
PAGE 34
Fig.
PAGE 35
Fig.
PAGE 36
Fig.
PAGE 37
Fig.
PAGE 38
Fig.
PAGE 39
*Where X is the unit control software version number (1 or 2). Fig.
PAGE 40
Fig.
PAGE 41
DETAIL A PRIMARY 208 V, 380 V H2 230 V, 400 V 460 V, 575 V ORG BLK/RED SECONDARY H1 BLK (COMMOM) BRN TO POSITION 2 RED 24 V H3 H4 RED Fig.
PAGE 42
CRHEATER124A00 (240 V, 18 kW*) CRHEATER125A00 (240 V, 36 kW†) CRHEATER126A00 (380 V, 400 V, AND 480 V, 18 kW*) CRHEATER127A00 (380 V, 400 V, AND 480 V, 36 kW†) CRHEATER128A00 (600 V, 18 kW*) CRHEATER129A00 (6000 V, 36 kW†) *Two heater assemblies total 36 kW. †Two heater assemblies total 72 kW. Fig.
PAGE 43
MMSN-1 GRA VIO GRN BLK BLK YEL YEL BLU BLU MOTOR MASTER III ACY RED BRN ORN OFC1 BLK 11 21 YEL 12 22 BLU 13 23 BLK 1 YEL 2 BLU 3 OFM1 GRN YEL Fig.
PAGE 44
GRA MMSN-1 VIO GRN BLK BLK YEL YEL BLU BLU MOTOR MASTER III ACY RED BRN ORN OFC1 BLK 11 21 BLK 1 YEL 12 22 YEL 2 BLU 13 23 BLU 3 OFM1 GRN BLK 1 YEL 2 BLU 3 YEL OFM2 GRN YEL Fig.
PAGE 45
IFR 2 1 TRAN1 X2 2 CLOCK 115 VAC, 60 Hz (GROUNDED SIDE) TB2 TB6 (REMOTE PANEL) 2 12 UNOCC 1 R 3 CLOCK TB3 4 5 BPS OCC TB3 Y1 2 3 OCC 4 UNOCC 5 BASE MODULE HTG T30 6 CR1 1 CLG 7 IFR FAN 1 8 IFR 9 10 POWER 11 Fig. 38 — Remote Control Panel Wiring (Part No. 50DD-900-081) TRAN2 B CB4 3.2 AMPS COM SECONDARY 24 VOLT BASE MODULE CONTROL BOARD INDOOR FAN RELAY COM HIR (FIELD SUPPLIED) T 30 T29 T 28 Fig. 39 — Heat Interlock Relay Wiring (Part No.
PAGE 46
REMOTE START/STOP SWITCH R Y1 Y2 W1 W2 G C X NOTE: Switches shown in high enthalpy state. Terminals 2 and 3 close on enthalpy decrease. Fig. 41 — Wiring Connections for Solid-State Enthalpy Control (HH57AC077) CONTROL BOX Fig. 40 — Field Control Remote Start/Stop Wiring RJ 11 1 2 3 4 5 RED WHT BLK YEL BRN DEDICATED SEPARATE 24 VAC POWER SOURCE (TRANSFORMER SUPPLIED WITH LID-2B) MATING PLUG FOR BASE UNIT CONTROL MODULE COMMUNICATION PORT Fig.
PAGE 47
SPACE TEMPERATURE AVERAGING — 4 SENSOR APPLICATION SPACE TEMPERATURE AVERAGING — 9 SENSOR APPLICATION Fig.
PAGE 48
RJ14 PLUG TB1 T2 BLACK (–) RJ14 CCN CONNECTION TO COMM PORT ON PROCESSOR MODULE E3 E1 T2 T2 T1 T1 J6 J5 J4 WHITE (GND) RED (+) J3 BASE CONTROL BOARD J2 J1 R3 E3 E2 JUMPER MUST BE BETWEEN E3 AND E2 E1 Fig. 44 — Space Temperature Sensor (T-55) Wiring TH RJ14 PLUG TB1 T1 COM T2 SW T3 T2 CCN CONNECTION TO COMM PORT ON PROCESSOR MODULE E3 E1 24VAC (+) RED (+) WHITE (GND) BLACK (–) CCN (+) CCN GND CCN (–) 24VAC (–) R3 E3 E2 E1 JUMPER MUST BE BETWEEN E3 AND E2 Fig.
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MODULE SPACE SENSOR WIRING WHEN DISTANCE BETWEEN MODULE AND SPT IS 100 FT MAXIMUM 3 COND COMM CABLE (TYP) CCN COMM BUS 100 FT MAXIMUM MODULE SPACE SENSOR WIRING WHEN DISTANCE BETWEEN MODULE AND SPT IS GREATER THAN 100 FT CCN COMM BUS Fig.
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DEGREES F (C) RESET 0.00 (0.00) 1.25 (0.70) 2.50 (1.40) 3.75 (2.10) 5.00 (2.80) 6.25 (3.50) 7.50 (4.20) 8.75 (4.90) 10.00 (5.60) 11.25 (6.30) 12.50 (7.00) 13.75 (7.70) 15.00 (8.40) 16.25 (9.10) 17.50 (9.80) 18.75 (10.50) 20.00 (11.20) mA INPUT 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 BASE MODULE CONTROL BOARD (+) T11 4-20 mA INPUT (–) T12 FIELD SUPPLIED INPUT DEVICE NOTE: The 4 to 20 mA input is a field-supplied non-Carrier EMS (Energy Management System) device. Fig.
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PAGE 52
Copyright 1998 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book 1 1 1 PC 111 Catalog No. 564-826 Printed in U.S.A.