Once a variable-speed fan is configured with the Economizer Controller via terminal VFD 0-10 and the Fan Configuration in Climatix Mobile or '6FAN' in the inbuilt menu is configured as 'VFD FAN', the controller can control the fan speed following the logic below:

Variable-Speed Fan Control Logic During 3-Stage Cooling

OCC

Y1

Y2

Y3

6FAN

VFD Speed

Spd L1)

Spd M2)

Spd H3)

Pos L4)

Pos M5)

Pos H6)

DO7)

Yes

x

-

-

VFD FAN

60%

x

-

-

x

-

-

On

Yes

x

x

-

VFD FAN

80%

-

x

-

-

x

-

On

Yes

x

x

x

VFD FAN

100%

-

-

x

-

-

x

On

Yes

-

-

-

VFD FAN

60%

x

-

-

x

-

-

On

No

x

-

-

VFD FAN

60%

x

-

-

-

-

-

On

No

x

x

-

VFD FAN

80%

-

x

-

-

-

-

On

No

x

x

x

VFD FAN

100%

-

-

x

-

-

-

On

No

-

-

-

VFD FAN

60%8)

x

-

-

-

-

-

Off

Variable-Speed Fan Control Logic During 3-Stage Heating

OCC

Y1

Y2

Y3

W1

(Heating)

O/B = B

(Heating)

6FAN

VFD Speed

Spd L1)

Spd M2)

Spd H3)

Pos L4)

Pos M5)

Pos H6)

DO7)

Yes

x

-

-

-

x

VFD FAN

60%

x

-

-

-

-

x

On

Yes

x

x

-

-

x

VFD FAN

80%

-

x

-

-

-

x

On

Yes

x

x

x

-

x

VFD FAN

100%

-

-

x

-

-

x

On

Yes

-

-

-

x

-

VFD FAN

100%

x

-

-

-

-

x

On

No

x

-

-

-

x

VFD FAN

60%

x

-

-

-

-

-

On

No

x

x

-

-

x

VFD FAN

80%

-

x

-

-

-

-

On

No

x

x

x

-

x

VFD FAN

100%

-

-

x

-

-

-

On

No

-

-

-

x

-

VFD FAN

100%

x

-

-

-

-

-

On

Variable-Speed Fan Control Logic During 2-Stage Cooling

OCC

Y1

Y2

6FAN

VFD Speed

Spd L1)

Spd M2)

Spd H3)

Pos L4)

Pos M5)

Pos H6)

DO7)

Yes

x

-

VFD FAN

60%

x

-

-

x

-

-

On

Yes

x

x

VFD FAN

100%

-

x

-

-

-

x

On

Yes

-

-

VFD FAN

60%

x

-

-

x

-

-

On

No

x

-

VFD FAN

60%

x

-

-

-

-

-

On

No

x

x

VFD FAN

100%

-

x

-

-

-

-

On

No

-

-

VFD FAN

60%8)

x

-

-

-

-

-

Off

Variable-Speed Fan Control Logic During 2-Stage Heating

OCC

Y1

Y2

W1

(Heating)

O/B = B

(Heating)

6FAN

VFD Speed

Spd L1)

Spd M2)

Spd H3)

Pos L4)

Pos M5)

Pos H6)

DO7)

Yes

x

-

-

x

VFD FAN

60%

x

-

-

-

-

x

On

Yes

x

x

-

x

VFD FAN

100%

-

x

-

-

-

x

On

Yes

-

-

x

-

VFD FAN

100%

x

-

-

-

-

x

On

No

x

-

-

x

VFD FAN

60%

x

-

-

-

-

-

On

No

x

x

-

x

VFD FAN

100%

-

x

-

-

-

-

On

No

-

-

x

-

VFD FAN

100%

x

-

-

-

-

-

On

1

Spd L = Low Speed (Fan)

4

Pos L = Damper MIN POS for Low-Speed Fan

2

Spd M = Medium Speed (Fan)

5

Pos M = Damper MIN POS for Medium-Speed Fan

3

Spd H = High Speed (Fan)

6

Pos H = Damper MIN POS for High-Speed Fan

7

Optional. Meaningful only if '6AUX1-O' or '6AUX2-O' is configured as 'SUP FAN'.

8

Adjustable later on if there is any customer request.

See I/O Configuration for configurations of '6FAN', '6AUX1-O' and '6AUX2-O'.

Fan speed in percentage for Spd L, Spd M and Spd H is only configurable in the Climatix Mobile app.