Line lo a d, Line load, Wiring – Greenheck Vari-Flow Air Management Systems (472966) User Manual

Page 5

Vari-Flow Air Management System

NOTE

All field installation and wiring of electrical
equipment must be done to meet NEC and local
codes.

Control Box

1. Run power to the control box from two

dedicated 120/1 20A breakers to the designated
terminals in the control box (one for lights, one
for controls).

2. If the variable frequency drives(s) are shipped

loose from the control cabinet, please refer
to the VFD wiring section for connection
instructions to the control box.

3. For hood systems connected to a fire system,

the fire system microswitch can be wired into
the designated terminals of the control box for
integration of fire system controls. The factory
default is exhaust on, supply off in fire mode. For
help with changing this parameter, please refer
to the controller setup portion of this manual.

Resistive Temperature Detectors (RTD)

1. Wire the two leads of the sensors to designated

terminals in the control panel as shown below.
For more than four sensors, see wiring diagram
on page 7 or the one inside of control box door.
The two wires of the sensor are not polarity
sensitive. If more than one hood is being
controlled, be sure that the appropriate sensor is
wired in association with the appropriate hood.

Wiring

Variable Frequency Drives (VFD)

NOTE

If the VFD(s) are factory supplied and mounted in a
cabinet, all interface wiring is factory supplied and
this first step can be disregarded.

NOTE

If electrically commutated motors are being used,
VFDs will not be needed.

1. If the variable frequency drives are remotely

mounted, a six conductor 18 ga. Class 2 cable
must run between each VFD and the control
panel.

2. Bring power to the input of each VFD from a

dedicated power source using conduit. Each
power source shall be of the same voltage as
the respective fan and of a high enough amp
rating to handle the full load amp draw of the
respective fan.

3. To avoid interference between the conductors,

use separate conduit to wire from the VFD
output to the input power for the fan.

93 - 24V (H)

42 - DO1

51 - DO4

45 - DO2

22 - DI COM

23 - DI2

25 - DI3

24V (C) - 92

DO1 COM - 41

DO4 COM - 53

24VAC

120VAC

Hood Run

RED

Fault Indicator

GRN

Full Speed Indicator

21 - DI1

Full Speed

Fan On/Off

Hood Lamp(s)

Hood Light Contactor

TR1

PB3

PB2

Hood Lights Switch

PB1

Hood Lights Relay

Hood Run Contact

GRN

Hood Run Indicator

Canopy Lighting circuit must not exceed 15A total current

AVPS - 13

31 - DI7

Fan Override

PS1

PRESSURE

Hood Light LED

Relay

Hood Light LED Contact

GRN

Hood Light Indicator

DO2 COM - 44

12 - AI5

1 - AICOM

GGH 20/VAV Fan Mode

0 VDC - Fan Auto

5 VDC - Fan OFF

10 VDC - Fan On for Dry

+ VDC

COM

Interlock Connection

BK 14GA

16GA RD

NEUTRAL

DI5 - 28

DI COM - 22

AO4 - 78

AO COM - 71

AI6 - 15

Hood Run

MUA Run

48 - DO3

1 - AICOM

2 - AI1

5 - AI2

7 - AI3

10 - AI4

LL+

LL-

COM

AICOM - 1

AO1 - 72

AO COM -71

AO2 - 74

AO3 - 76

DI COM - 22

DI4 - 26

24V (C) - 92

Shunt Trip Contact

Open on Shunt Trip

}

Fire Contact

24 VAC

120 VAC

24 VAC

EARTH - 91

Fire System

REMOVE

JUMPER

IF USED

Fire & Shunt

Trip Relay

24 VAC

}

Tempering Status

Contact

Closed Tempering On

Open Tempering Off

30 - DI6

29 - DI COM

VFD

MUA1

}
}

LINE

LOAD

VFD

}
}

LINE

LOAD

EF1

}
}

LINE

LOAD

VFD

EF2

}
}

LINE

LOAD

VFD

EF3

24VAC

120VAC

Hood Run

RED

Fault Indicator

GRN

Full Speed Indicator

Full Speed

Fan On/Off

Hood Light Contactor

TR1

PB3

PB2

Hood Lights Switch

PB1

Hood Lights Relay

Hood Run Contact

GRN

Hood Run Indicator

Canopy lighting circuit must not exceed 15A total current

Fan Override

PS1

PRESSURE

Hood Light LED Contact

GRN

Hood Light Indicator

GGH20/VAV Fan Mode

0VDC - Fan Auto

5VDC - Fan OFF

10VDC - Fan On for Dry

+ VDC

COM

Interlock Connection

BK 14GA

NEUTRAL

Hood Run

MUA Run

Shunt Trip Contact

Closes on Shunt Trip

Fire Contact

24 VAC

Fire System

REMOVE JUMPER IF USED

Fire & Shunt Trip Relay

24 VAC

Tempering Status Contact

Closed Tempering On

Open Tempering Off

REMOVE JUMPER

IF USED

93-24V (H)

42-DO1

51-DO4

45-DO2

12-AI5

1-AICOM

48-DO3

1-AICOM

2-AI1

5-AI2

7-AI3

10-AI4

30-DI6

29-DI COM

80-AOV HOT

35-DIV HOT

DI COM-22

DI2-23

DI3-25

24V (C)-92

DO1 COM-41

DO4 COM-53

DI1-21

AVPS-13

DI7-31

DO2 COM-44

DI5-28

DI COM-22

AO4-78

AO COM-71

AI6-15

AICOM-1

AO1-72

AO COM-71

AO2-74

AO3-76

DI COM-22

DI4-26

EARTH-91

AOV COM-79

DIV COM-34

DO3 COM-47

YW
YW
YW

Hood Lamp(s)

Hood Light LED Relay

16GA RD

120 VAC

VFD

MUA1

LINE

24V (C)-92

24V (H)-93

}

24 VAC FAN ENABLE

TO MUA

VFD

LINE

EF1

LINE

VFD

EF2

LINE

VFD

EF3

}

9/3/2010

Turned off several layers; Borders/Legend.

Adjusted the text so it would be readable.

Was overlapping on lines.

Changed line weight.

Changed to Black/CMYK.

Converted from a .dwg drawing.

NOTE

The RTD’s should not be exposed to direct flame.
The RTD’s are rated up to 250°F

NOTE

The VFD input voltage parameter (E1-01) and motor
overload parameter (E2-01) need to be set to the
motor nameplate FLA. Refer to the Quick Start
Guide from Yaskawa (pages 83-100) for setting these
parameters on the Yaskawa drive.

NOTE

Be sure to use appropriately sized wire for the full
load amp draw.