Carrier 48HX Manuale Utente

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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-56480002-01 Printed in U.S.A. Form 48/50A-3W Pg 1 508 4-08 Replaces: New
Wiring Diagrams
INDEX
ACCESSORIES
NOTE: Accessory wiring is shown on the unit wiring diagrams. Refer
to the appropriate drawing for accessory wiring.
TYPE UNIT NUMBER FIG. NO.
Component Arrangement
48/50A2,A3,A4,A5020-035 48EJ502489 1
48/50A2,A3,A4,A5040-060 48EJ503652 2
Power Schematic
48/50A2,A3,A4,A5020-050 50EJ500470 3
48/50A2,A3,A4,A5060 RTPF 50EJ500469 4
48/50A2,A3,A4,A5060 MCHX 50EJ500420 5
Main Control Box Circuit 48/50A2,A3,A4,A5020-060 50EJ500440 6
Auxiliary Control Box Wiring 48/50A2,A3,A4,A5020-060 48EJ503076 7
Controls Expansion
Board Wiring
48/50A2,A3,A4,A5020-060 48EJ503086 8
Gas Heat Control Circuit
(2-Stage Heat)
48A2,A3,A4,A5020-050 48EJ503079 9
48A2,A3,A4,A5060 48EJ503679 10
Gas Heat Control Circuit
(Staged Gas Heat)
48A2,A3,A4,A5020-050 48EJ502488 11
48A2,A3,A4,A5060 48EJ503680 12
Electric Heat Control Circuit
50A2,A3,A4,A5020-050 48EJ503080 13
50A2,A3,A4,A5060 48EJ503655 14
ACCESSORY UNIT FIG. NO.
Motormaster® V Low Ambient Controller
48/50A2,A3,A4,A5020-035 15
48/50A2,A3,A4,A5040,050 AND 060 RTPF Units 16
48/50A2,A3,A4,A5060 MCHX Units 17
Space Sensor Temperature Averaging 48/50A2,A3,A4,A5020-060 18
Thermostat
48/50A2,A3,A4,A5020-060 6
Remote Economizer Position Override
Remote Economizer Minimum Position Set Point
Remote 4 to 20 mA Economizer Position
Space IAQ Sensor
Outdoor Enthalpy Changeover Sensor
48/50A2,A3,A4,A5020-060 7
Differential Enthalpy Changeover Sensor
Outdoor Air Quality Sensor
48/50A2,A3,A4,A5020-060 8
Remote Supply Air Set Point
Demand Limit Controller
Fan Status Switch
Demand Limit
Fire Pressurization
Fire Evacuation
Fire Smoke Purge
IAQ Override Switch
WEATHERMAKER
®
48/50A2,A3,A4,A5020-060
Single Package Rooftop
Gas Heating/Electric Cooling and Electric Cooling Units
with COMFORTLINK™ Controls
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1 2 3 4 5 6 ... 27 28

Sommario

Pagina 1 - Wiring Diagrams

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

Pagina 2 - ELECTRIC HEAT POWER DIAGRAMS

10Fig. 3 — Power Schematic — 48/50A2,A3,A4,A5020-050 Unitsa48-8385

Pagina 3 - SEQUENCE OF OPERATION

11Fig. 4 — Power Schematic — 48/50A2,A3,A4,A5060 RTPF Unitsa48-8386

Pagina 4

12Fig. 5 — Power Schematic — 48/50A2,A3,A4,A5060 MCHX Unitsa48-8387

Pagina 5

13~~~~TONEXTPAG EFig. 6 — Main Control Box Circuit — 48/50A2,A3,A4,A5020-060 Unitsa48-8388

Pagina 6

14~~~~TOPREVIOUSPAG Ea48-8389Fig. 6 — Main Control Box Circuit — 48/50A2,A3,A4,A5020-060 Units (cont)

Pagina 7

15ABB ACS800 DRIVENOT USEDABB ACS550 DRIVESTANDARDTOSHIBA E3 DRIVENOT USEDFig. 7 — Auxiliary Control Box Wiring — 48/50A2,A3,A4,A5020-060 Unitsa48-839

Pagina 8

16Fig. 8 — Controls Expansion Board Wiring — 48/50A2,A3,A4,A5020-060 Unitsa48-8261

Pagina 9 - OUTDOOR FAN ASSEMBLIES. UNIT

17Fig. 9 — Gas Heat Control Circuit (2-Stage Heat) — 48A2,A3,A4,A5020-050 Unitsa48-8310

Pagina 10

18Fig. 10 — Gas Heat Control Circuit (2-Stage Heat) — 48A2,A3,A4,A5060 Unitsa48-8311

Pagina 11

19Fig. 11 — Gas Heat Control Circuit (Staged Gas Heat) — 48A2,A3,A4,A5020-050 Unitsa48-8313

Pagina 12

2ELECTRIC HEAT POWER DIAGRAMSNOTE: All power leads connect to (single) TB7 power terminal block.There are 2 or 3 conductors per terminal.LEGEND AND NO

Pagina 13

20Fig. 12 — Gas Heat Control Circuit (Staged Gas Heat) — 48A2,A3,A4,A5060 Unitsa48-8315

Pagina 14 - PREVIOUS

21Fig. 13 — Electric Heat Control Circuit — 50A2,A3,A4,A5020-050 Unitsa48-8266

Pagina 15

22Fig. 14 — Electric Heat Control Circuit — 50A2,A3,A4,A5060 Unitsa48-8267

Pagina 16

23BLK23GRNDPAREDBLKGRNREDAB652L1L1L1T1T2T3SEE NOTE 112BLKYELBLUFUSEFUSEFUSEMM-FCCB2221111213BLKREDBLU123OFM2FR24FR13C1C2OFC1MMBLKGRNREDBLKGRNREDDPAMM-

Pagina 17

24Fig. 18 — Space Temperature Averaging Wiringa48-669334REDBLKTB534TB5SENSOR 1SENSOR 2SENSOR 3SENSOR 4SENSOR 1SENSOR 2 SENSOR 3SENSOR 4SENSOR 5SENSOR

Pagina 18

2536 kW, 208/230 V, SIZES 020-05054 kW, 208/230 V, SIZE 06072 kW, 208/230 V, SIZES 020-050108 kW, 208/230 V, SIZE 06036 kW, 460 V, SIZES 020-05024 kW,

Pagina 21

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

Pagina 22

3SEQUENCE OF OPERATIONConstant Volume (CV) Units — On power up, thecontrol module will activate the initialization software. Theinitialization softwa

Pagina 23

4If the control is connected to a ComfortID™ system, theroom terminals are equipped with microprocessor controls thatgive commands to the base module.

Pagina 24

5During the occupied period in the absence of a demand forcooling using outside air, if CO2 level is below the set point forthe minimum ventilation le

Pagina 25

6INPUT/OUTPUT CHANNEL DESIGNATIONS — ECONOMIZER CONTROL BOARD (ECB1)INPUT/OUTPUT CHANNEL DESIGNATIONS — VAV CONTROL BOARD (ECB2)INPUT/OUTPUT CHANNEL D

Pagina 26

7INPUT/OUTPUT CHANNEL DESIGNATIONS — CONTROLS EXPANSION BOARDINPUT/OUTPUT CHANNEL DESIGNATIONS — FIELD CONNECTION TERMINAL STRIPS* This input is avail

Pagina 27

8Fig. 1 — Component Arrangement — 48/50A2,A3,A4,A5020-035 Unitsa48-8308

Pagina 28

9Fig. 2 — Component Arrangement — 48/50A2,A3,A4,A5040-060 Unitsa48-8309LOCATIONS ARE TYPICAL FOR ALL SIZE040-060 UNITS. SIZE 060 RTPF (ROUNDTUBE PLATE

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