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Carrier WEATHERMAKER 48A4, Wiring Diagrams

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Carrier WEATHERMAKER 48A4 Wiring Diagrams Download Page 24

24

Fig. 18 — Space Temperature Averaging Wiring

a48-6693

3

4

RED

BLK

TB5

3

4

TB5

SENSOR 1

SENSOR 2

SENSOR 3

SENSOR 4

SENSOR 1

SENSOR 2

SENSOR 3

SENSOR 4

SENSOR 5

SENSOR 6

SENSOR 7

SENSOR 8

SENSOR 9

SPACE TEMPERATURE AVERAGING (4 SENSOR APPLICATION)

SPACE TEMPERATURE AVERAGING (9 SENSOR APPLICATION)

Fig. 17 — Motormaster V Accessory Wiring — 48/50A2,A3,A4,A5060 MCHX Units

                        LEGEND

CCB

—

Control Circuit Breaker

FR

—

Fan Relay

MM-F —

Motormaster V Fuses

MMPT —

Motormaster V Pressure 
Transducer

MMV

—

Motormaster V

OFC

—

Outdoor-Fan Contactor

OFM

—

Outdoor-Fan Motor

TB

—

Terminal Block

NOTES:

1. Motormaster® control to be wired directly to CCB

circuit breaker and the OFC1 contactor should be
removed from the wiring.

2. Connect start relay FR to the following terminals:

230-3-60 TB1-TB2
460-3-60 TB1-TB2
575-3-60 TB1-TB2
208-3-60 TB13A-TB2

3. Add FR-B relay in parallel with OFC1. Add FR-A

relay in parallel with OFC3.

a48-8391

Summary of Contents for WEATHERMAKER 48A4

Page 1: ...79 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 Unit...

Page 2: ...riable Frequency Drive Terminal Block Terminal Unmarked Terminal Marked Splice Factory Wiring Field Wiring To indicate common potential only not to represent wiring To indicate FIOP or Accessory Common PLUG LOCATION REFERENCE NOTES 1 Factory wiring is in accordance with the national electrical codes Any field modifications or additions must be in compliance with all applicable codes 2 Use 75 C min...

Page 3: ...nsated Start function will bring on the unit at 7 45 AM as determined from previous operation so the room temperature will be at 72 F when the occupied time starts If the unit has been configured for a pre occupancy purge then the control will start the unit in Vent mode prior to the occupancy time to vent the space If an IAQ indoor air quality sensor is being used and the low IAQ set point is sat...

Page 4: ...th 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 MBB Main Base Board module board initiates and terminates heating operation and monitors the status of the requirements for indoor fan operation The fan will be controlled directly by the MBB board When the thermostat or room sensor ca...

Page 5: ...c 1 0vac Y2 Thermostat Y2 input DI6 J7 7 8 8 0 24vac 1 0vac Y1 Thermostat Y1 input DI7 J7 9 10 10 0 24vac 1 0vac CSB_A1 Compressor A1 current sensor DIG1 J9 10 12 10 5v 11 Vin 12 GND 0 5vdc 1 0vdc CSB_A2 Compressor A2 current sensor DIG2 J9 7 9 7 5v 8 Vin 9 GND 0 5vdc 1 0vdc CSB_B1 Compressor B1 current sensor DIG3 J9 4 6 4 5v 5 Vin 6 GND 0 5vdc 1 0vdc CSB_B2 Compressor B2 current sensor DIG4 J9 1...

Page 6: ...pply Fan Inverter speed AO1 J9 1 2 1 0 20mA 2 GND 0 20mA OUT PP MP J7 1 3 1 PP MP Data 2 24VAC 3 GND Belimo PP MP Protocol RLY1 J8 1 3 1 2 RLY1A 3 RLY1B 1 Closes RLY1A RLY1B RLY 2 J8 4 6 4 5 RLY2A 6 RLY2B 1 Closes RLY2A RLY2B RLY 3 J8 7 9 7 8 RLY3A 9 RLY3B 1 Closes RLY3A RLY3B MLV Minimum load valve RLY 6 J8 16 18 16 17 RLY6A 18 RLY6B 1 Closes RLY6A RLY6B POINT NAME POINT DESCRIPTION I O POINT NAM...

Page 7: ...gic 8 Grd ground TB 4 THEROMSTAT CONNECTIONS HY84HA090 in Main Control Box TB4 1 Thermostat R 24 VAC Power 2 Thermostat Y1 24 VAC Input 3 Thermostat Y2 24 VAC Input 4 Thermostat W1 24 VAC Input 5 Thermostat W2 24 VAC Input 6 Thermostat G 24 VAC Input 7 Thermostat C 24 VAC Common 8 Thermostat X Alarm Contact 24 VAC Output TB 5 FIELD CONNECTIONS HY84HA101 in Main Control Box TB5 1 VAV Heater Interlo...

Page 8: ...8 Fig 1 Component Arrangement 48 50A2 A3 A4 A5020 035 Units a48 8308 ...

Page 9: ...nent Arrangement 48 50A2 A3 A4 A5040 060 Units a48 8309 LOCATIONS ARE TYPICAL FOR ALL SIZE 040 060 UNITS SIZE 060 RTPF ROUND TUBE PLATE FIN UNITS HAVE 6 SIX OUTDOOR FAN ASSEMBLIES UNIT SHOWN IS A 50 SERIES SIZE 040 ...

Page 10: ...10 Fig 3 Power Schematic 48 50A2 A3 A4 A5020 050 Units a48 8385 ...

Page 11: ...11 Fig 4 Power Schematic 48 50A2 A3 A4 A5060 RTPF Units a48 8386 ...

Page 12: ...12 Fig 5 Power Schematic 48 50A2 A3 A4 A5060 MCHX Units a48 8387 ...

Page 13: ...13 TO NEXT PAGE Fig 6 Main Control Box Circuit 48 50A2 A3 A4 A5020 060 Units a48 8388 ...

Page 14: ...14 TO PREVIOUS PAGE a48 8389 Fig 6 Main Control Box Circuit 48 50A2 A3 A4 A5020 060 Units cont ...

Page 15: ...15 ABB ACS800 DRIVE NOT USED ABB ACS550 DRIVE STANDARD TOSHIBA E3 DRIVE NOT USED Fig 7 Auxiliary Control Box Wiring 48 50A2 A3 A4 A5020 060 Units a48 8390 ...

Page 16: ...16 Fig 8 Controls Expansion Board Wiring 48 50A2 A3 A4 A5020 060 Units a48 8261 ...

Page 17: ...17 Fig 9 Gas Heat Control Circuit 2 Stage Heat 48A2 A3 A4 A5020 050 Units a48 8310 ...

Page 18: ...18 Fig 10 Gas Heat Control Circuit 2 Stage Heat 48A2 A3 A4 A5060 Units a48 8311 ...

Page 19: ...19 Fig 11 Gas Heat Control Circuit Staged Gas Heat 48A2 A3 A4 A5020 050 Units a48 8313 ...

Page 20: ...20 Fig 12 Gas Heat Control Circuit Staged Gas Heat 48A2 A3 A4 A5060 Units a48 8315 ...

Page 21: ...21 Fig 13 Electric Heat Control Circuit 50A2 A3 A4 A5020 050 Units a48 8266 ...

Page 22: ...22 Fig 14 Electric Heat Control Circuit 50A2 A3 A4 A5060 Units a48 8267 ...

Page 23: ...1 TB2 575 3 60 TB1 TB2 208 3 60 TB13A TB2 3 Add FR relay in parallel with OFC1 Fig 16 Motormaster V Accessory Wiring 48 50A2 A3 A4 A5040 050 and 48 50A2 A3 A4 A5060 RTPF Units NOTES 1 Motormaster control to be wired directly to CCB cir cuit breaker and the OFC1 contactor should be removed from the wiring 2 Connect start relay FR to the following terminals 230 3 60 TB1 TB2 460 3 60 TB1 TB2 575 3 60...

Page 24: ...5060 MCHX Units LEGEND CCB Control Circuit Breaker FR Fan Relay MM F Motormaster V Fuses MMPT Motormaster V Pressure Transducer MMV Motormaster V OFC Outdoor Fan Contactor OFM Outdoor Fan Motor TB Terminal Block NOTES 1 Motormaster control to be wired directly to CCB circuit breaker and the OFC1 contactor should be removed from the wiring 2 Connect start relay FR to the following terminals 230 3 6...

Page 25: ...E 060 36 kW 575 V SIZES 020 050 54 kW 575 V SIZE 060 72 kW 575 V SIZES 020 050 108 kW 575 V SIZE 060 Fig 19 Electric Heater Power Diagrams 72 kW 460 V SIZES 020 050 49 kW 380 V SIZES 020 050 108 kW 460 V SIZE 060 74 kW 380 V SIZE 060 a48 6694 a48 6695 a48 6696 a48 6697 a48 6698 a48 6699 LEGEND FU Fuse HC Heater Contactor TB Terminal Block Terminal Marked Terminal Block Terminal Unmarked Factory Wi...

Page 26: ......

Page 27: ......

Page 28: ... 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 28 508 4 08 Replaces New Copyright 2008 Carrier Corporation ...

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