Bryant 581B036--072 ユーザーズマニュアル
59
Table 44—EconoMi$er IV Input/Output Logic
INPUTS
OUTPUTS
Demand Control
Enthalpy*
Compressor
N Terminal†
Demand Control
V til ti
(DCV)
Outdoor
Return Y1 Y2
Stage Stage
Occupied
Unoccupied
Ventilation (DCV)
Outdoor
Return Y1 Y2
1
2
Damper
Below set
(DCV LED Off)
High
(F
C li
LED Off)
Low
On On
On
On
Minimum position
Closed
Below set
(DCV LED Off)
High
(Free Cooling LED Off)
Low
On Off
On
Off
Minimum position
Closed
Off Off
Off
Off
Low
(F
C li
LED O )
High
On On
On
Off
Modulating** (between min.
i i
d f ll
)
Modulating** (between
l
d
d f ll
)
Low
(Free Cooling LED On)
High
On Off
Off
Off
Modulating
(between min.
position and full-open)
Modulating
(between
closed and full-open)
Off Off
Off
Off
Minimum position
Closed
Above set
(DCV LED O )
High
(F
C li
LED Off)
Low
On On
On
On
Modulating†† (between min.
i i
d DCV
i
)
Modulating†† (between
l
d
d DCV
Above set
(DCV LED On)
High
(Free Cooling LED Off)
Low
On Off
On
Off
Modulating†† (between min.
position and DCV maximum)
Modulating†† (between
closed and DCV
maximum)
Off Off
Off
Off
maximum)
Low
(F
C li
LED O )
High
On On
On
Off
Modulating***
Modulating†††
Low
(Free Cooling LED On)
High
On Off
Off
Off
Modulating
Modulating†††
Off Off
Off
Off
*For single enthalpy control, the module compares outdoor enthalpy to the ABCD set point.
†Power at N terminal determines Occupied/Unoccupied setting: 24 vac (Occupied), no power (Unoccupied).
**Modulation is based on the supply-air sensor signal.
††Modulation is based on the DCV signal.
***Modulation is based on the greater of DCV and supply-air sensor signals, between minimum position and either maximum position (DCV) or fully open (sup-
ply-air signal).
†††Modulation is based on the greater of DCV and supply-air sensor signals, between closed and either maximum position (DCV) or fully open (supply-air sig-
nal).
C06053
Fig. 67
--- EconoMi$er IV Functional View
581B
,C