Table 29 — EconoMi$erIV Input/Output Logic

 

INPUTS

 

 

 

 

 

OUTPUTS

 

Demand Control

Enthalpy*

 

 

 

Compressor

N Terminal†

 

 

Y1

Y2

Stage

Stage

Occupied

Unoccupied

Ventilation (DCV)

Outdoor

Return

 

 

1

2

Damper

 

 

 

 

 

Below set

High

Low

On

On

On

On

Minimum position

Closed

(DCV LED Off)

(Free Cooling LED Off)

 

 

 

 

 

 

 

 

On

Off

On

Off

 

 

 

 

 

 

 

 

 

 

Off

Off

Off

Off

 

 

 

Low

High

On

On

On

Off

Modulating** (between min.

Modulating** (between

 

(Free Cooling LED On)

 

 

 

 

 

position and full-open)

closed and full-open)

 

 

On

Off

Off

Off

 

 

 

 

 

 

 

 

Off

Off

Off

Off

Minimum position

Closed

Above set

High

Low

On

On

On

On

Modulating†† (between min.

Modulating†† (between

(DCV LED On)

(Free Cooling LED Off)

 

 

 

 

 

position and DCV maximum)

closed and DCV

 

On

Off

On

Off

 

 

 

 

maximum)

 

 

 

Off

Off

Off

Off

 

 

 

 

 

 

 

Low

High

On

On

On

Off

Modulating***

Modulating†††

 

(Free Cooling LED On)

 

 

 

 

 

 

 

 

 

On

Off

Off

Off

 

 

 

 

 

 

 

 

 

 

Off

Off

Off

Off

 

 

*For single enthalpy control, the module compares outdoor enthalpy to the ABCD set point.

†Power at N terminal determines Occupied/Unoccupied setting: 24 vac (Occupied), no power (Unoccupied).

**Modulation is based on the supply air sensor signal. ††Modulation is based on the DCV signal.

***Modulation is based on the greater of DCV and supply air sensor signals, between minimum position and either maximum position (DCV) or fully open (supply air signal).

†††Modulation is based on the greater of DCV and supply air sensor signals, between closed and either maximum position (DCV) or fully open (supply air signal).

Fig. 48 — EconoMi$erIV Functional View

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Image 47
Bryant 580F operation manual EconoMi$erIV Input/Output Logic, Inputs Outputs, Demand Control Enthalpy, Terminal†

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