Fig. 61 — economi$erlv functional view, Table 30 — economi$erlv input/output logic – Carrier 48TJ016-028 User Manual
Page 52
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Table 30 — EconoMI$erlV Input/Output Logic
INPUTS
OUTPUTS
Demand
Control
Ventilation (DCV)
Enthalpy*
Y1
Y2
Compressor
N Terminait
Outdoor
Return
Stage
1
Stage
2
Occupied Unoccupied
Damper
Below set
(DCV LED Off)
High
(Free Cooling LED Off)
Low
On
On
On
On
Minimum position
Closed
On
Off
On
Off
Oft
Off
Off
Off
Low
(Free Cooling LED On)
High
On
On
On
Off
Modulating** (between min.
position and full-open)
Modulating** (between
closed and full-open)
On
Off
Off
Off
Off
Off
Off
Off
Minimum position
Closed
Above set
(DCV LED On)
High
(Free Cooling LED Off)
Low
On
On
On
On
Modulafingtt (between min.
position and DCV maximum)
Modulafingtt (between
closed and DCV
maximum)
On
Off
On
Off
Off
Off
Off
Off
Low
(Free Cooling LED On)
High
On
On
On
Off
Modulating***
Modulafingttt
On
Off
Off
Off
Off
Off
Off
Off
*For single enthalpy control, the module compares outdoor
enthalpy to the ABCD set point,
tPower at N terminal determines Occupied/Unoccupied setting:
24 vac (Occupied), no power (Unoccupied).
"Moduiatlon is based on the supply air sensor signal.
tfModulation is based on the DCV signal.
’"Modulation is based on the greater of DCV and supply air sensor
signals, between minimum position and either maximum position
(DCV) or fully open (supply air signal).
tttModulation is based on the greater of DCV and supply air sen
sor signals, between closed and either maximum position (DCV)
or fully open (supply air signal).
2 - IP №C
AClUATOR
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"K
uU"?JÎ
l5rrr./;ta'iftr tY-
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1
i
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Fig. 61 — EconoMi$erlV Functional View
5 2