Carrier EWQ024 Spezifikationen

Wiring DiagramsNOTE: This literature applies to units produced after 11/3/96(software version 2.0 or greater)DIAGRAM INDEXUNIT LABEL DIAGRAMUnit Volta

LEGENDAHA — Adjustable Heat AnticipatorBP — Building PressureBPS — Bypass SwitchBR — Burner RelayC—Contactor, CompressorCAP — CapacitorCB — Circuit Br

ERROR CODE DESCRIPTIONFOR CONTROL BOARDLEDBlinksError Mode2 Compressor 1 Safety3 Compressor 2 Safety4 Thermostat Failure5 SAT Thermistor Failure6 OAT

Fig. 2 — Control Circuit (120-V) — 48/50EJ,EW024-048 and 50EJQ,EWQ024,028 Units12

Fig. 3 — Control Circuit (24-V) — 48EJ,EW024-048 Units13

Fig. 4 — Power Schematic — 48/50EJ,EK,EW,EY024-034 and 50EJQ,EWQ024,028; 208/230-3-60 and 460-3-60 UnitsTABLE AThe Following Compressors HaveTwo Paral

Fig. 5 — Power Schematic — 48/50EJ,EK,EW,EY024-034; 575-3-60 Units15

Fig. 6 — Control Circuit (120-V) — 48/50EK,EY024-048 Units16

Fig. 7 — Control Circuit (24-V) — 48EK,EY024-048 UnitsTABLE AFor SoftwareVersion 1.0 ConnectBetween R and Y1For SoftwareVersion 2.0 ConnectBetween R a

Fig. 8 — Control Circuit (24-V) — 50EJ,EW024-048 UnitsTABLE AFor Software Version 1.0Connect Between R and Y1For Software Version 2.0Connect Between R

Fig. 9 — Power Schematic — 50EJ,EK,EW,EY024-034; 380-3-60 and 400-3-50 Units19

DIAGRAM INDEX (cont)UNIT LABEL DIAGRAMUnit VoltageLabelDiagram TypeSerialNumberEffectiveLabelDiagramFigureNo.50EJ,EW038-048ALLComponent Arrangement 11

Fig. 10 — Control Circuit (24-V) — 50EK,EY024-048 UnitsTABLE AFor Software Version 1.0Connect Between R and Y1For Software Version 2.0Connect Between

Fig. 11 — Component Arrangement — 48/50EJ,EK,EW,EY038-048ERROR CODE DESCRIPTION FOR CONTROL BOARDLED Blinks Error Mode2 Compressor 1 Safety3 Compresso

Fig. 12 — Power Schematic — 48/50EJ,EK,EW,EY038-048; 208/230-3-60 and 460-3-60 UnitsTABLE AThe Following Compressors HaveTwo Parallel Wires Run from T

Fig. 13 — Power Schematic — 48/50EJ,EK,EW,EY038-048; 575-3-60 Units23

Fig. 14 — Power Schematic — 50EJ,EK,EW,EY038-048; 380-3-60 and 400-3-50 Units24

Fig. 15 — Component Arrangement — 48/50EJ,EK,EW,EY054-068 UnitsERROR CODE DESCRIPTION FOR CONTROL BOARDLED Blinks Error Mode2 Compressor 1 Safety3 Com

Fig. 16 — Control Circuit (120-V) — 48/50EJ,EW054-068 Units26

Fig. 17 — Control Circuit (24-V) — 48EJ,EW054-068 Units27

Fig. 18 — Power Schematic — 48/50EJ,EK,EW,EY054-068; 208/230-3-60 UnitsTABLE AThe Following Compressors HaveTwo Parallel Wires Run from TB1to the Comp

Fig. 19 — Power Schematic — 48/50EJ,EK,EW,EY054-068; 460-3-60 Units29

DIAGRAM INDEX (cont)ACCESSORIESItem Figure No.Power Exhaust (Constant Volume and Modulating) 27,28*Base Control Board 29Expansion Board 30,31Electric

Fig. 20 — Power Schematic — 48/50EJ,EK,EW,EY054-068; 575-3-60 Units30

Fig. 21 — Control Circuit (120-V) — 48/50EK,EY054-068 Units31

Fig. 22 — Control Circuit (24-V) — 48EK,EY054-068 Units32

Fig. 23 — Control Circuit (24-V) — 50EJ,EW054-068 Units33

Fig. 24 — Power Schematic — 50EJ,EK,EW,EY054-068; 380-3-60 and 400-3-50 Units34

Fig. 25 — Control Circuit (24-V) — 50EK,EY054-068 Units35

Fig. 26 — Control Circuit — 50EJQ,EWQ024,028 Units36

Fig. 27 — Power Exhaust — 48/50EJ,EK,EW,EY054-068; 208/230-3-60 and 460-3-60 Units37

Fig. 28 — Power Exhaust — 48/50EJ,EK,EW,EY054-068; 575-3-60 Units and 50EJ,EK,EW,EY054-068; 380-3-60 and 400-3-50 Units38

*Where X is the unit control software version number (1 or 2).Fig. 29 — Base Unit Control Board Diagram39

When heating, the heat stages respond to the demand fromW1 and W2 of the thermostat input. Heating and cool-ing will be mutually locked out on demand

Fig. 30 — Expansion Board Connections40

DETAIL AH4H3REDH2ORGBLK/REDBLK (COMMOM)H1208 V,380 V230 V,400 V460 V,575 VREDBRNTO POSITION 2TO POSITION 124 VPRIMARYSECONDARYFig. 31 — Expansion Boar

*Two heater assemblies total 36 kW. †Two heater assemblies total 72 kW.Fig. 32 — Accessory Heat Package Wiring SchematicCRHEATER124A00(240 V, 18 kW*)C

BLKYELBLUBLKBLKYELBLUYELBLUMOTORMASTERIIIACYGRN YELOFM1MMSN-1GRAVIOGRNREDBRNORNOFC1211112221323BLKYELBLU123Fig. 33 — MotormasterT III Device Wiring, 4

BLKYELBLUBLKBLKYELBLUYELBLUMOTORMASTERIIIACYMMSN-1GRAVIOGRNREDBRNORNOFC1211112221323GRN YELOFM2BLKYELBLU123GRN YELOFM1BLKYELBLU123Fig. 36 — Motormaste

T30CR111IFRIFRIFRTRAN1TB2TB3115 VAC, 60 HzCLOCK12TB6 (REMOTE PANEL)122Y1BPSBASE MODULETB3RX22(GROUNDED SIDE)CLOCKUNOCC35OCC41234567891011OCCUNOCCHTGCL

W2RY1Y2W1GCXCONTROL BOXREMOTESTART/STOPSWITCHFig. 40 — Field Control Remote Start/Stop WiringNOTE: Switches shown in high enthalpy state. Terminals 2

SPACE TEMPERATURE AVERAGING — 4 SENSOR APPLICATIONSPACE TEMPERATURE AVERAGING — 9 SENSOR APPLICATIONFig. 43 — Space Temperature Averaging Wiring47

T2R3E3E2E1E3E1JUMPERMUST BEBETWEENE3 AND E2T2T1J6J5J4J3J2J1TB1BLACK (–)WHITE (GND)RED (+)RJ14 CCNCONNECTIONTOCOMM PORTONPROCESSORMODULERJ14 PLUGT2T1BA

SPACESENSORMODULE3 CONDCOMM CABLE(TYP)100 FT MAXIMUMCCNCOMM BUSWIRING WHEN DISTANCEBETWEEN MODULE ANDSPT IS 100 FT MAXIMUMWIRING WHEN DISTANCEBETWEEN

If the unit is controlled with a room sensor the fan will notrun in the Unoccupied mode. Upon a call for heat, the firststage of heat is energized, the

4-20 mAINPUTFIELDSUPPLIEDINPUT DEVICEBASE MODULECONTROL BOARD(+) T11(–) T12mA INPUTDEGREES F (C)RESET4 0.00 (0.00)5 1.25 (0.70)6 2.50 (1.40)7 3.75 (2.

Copyright 1998 Carrier CorporationManufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and w

Space Temperature Reset Sensor (VAV Only)—An accessory space temperature sensor (T-55 or T-56 with-out offset) is required. Space temperature reset is

The control module will operate economizer, run diag-nostics to monitor alarms/alerts at all times, and respond toCCN communications to perform any co

SMOKE DETECTORA smoke detector can be used to initiate fire shutdown.This can be accomplished by a set of normally closed pilotrelay contacts which wil

I/O CHANNEL DESIGNATIONS BASE MODULE — CVTERMINAL NO. ASSIGNMENT TERMINAL NO. ASSIGNMENTT1-2 SPT (CCN) — 10KV Thermistor T23-25 Compressor 2 Safety —