Carrier WeatherMaster 48HC04 Service And Maintenance Instructions page 48

RUN
DIRECT DRIVE
ACTUATOR
NOTES:
1. Switch on actuator must be in run position for economizer to operate.
2. PremierLink™ control requires that the standard 50HJ540569 out-
side-air sensor be replaced by either the CROASENR001A00 dry
bulb sensor or HH57A077 enthalpy sensor.
INPUTS
Demand Enthalpy*
Controlled
Ventilation
Outdoor
(DCV)
High
(Free Cooling
LED Off)
Below set
(DCV LED
Off)
Low
(Free Cooling
LED On)
High
(Free Cooling
LED Off)
Above set
(DCV LED
On)
Low
(Free Cooling
LED On)
* 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).
500 OHM
RESISTOR
ORANGE
Fig. 68 — EconoMi$er2 with 4 to 20 mA Control Wiring
Table 21 — EconoMi$er IV Input/Output Logic
Compressor
Y1 Y2
Return Stage 1
On On On
Low On Off On
Off Off Off
On On On
High On Off Off
Off Off Off
On On On
Low On Off On
Off Off Off
On On On
High On Off Off
Off Off Off
VIOLET
PINK
OAT SENSOR
4-20mA SIGNAL
3. 50HJ540573 actuator consists of the 50HJ540567 actuator and a
harness with 500-ohm resistor.
OUTPUTS
Stage 2 Occupied
On
Off Minimum position
Off
Off
Modulating** (between
min. position and full-open)
Off
Off Minimum position
On
Modulating†† (between min.
Off
position and DCV maximum)
Off
Off
Off Modulating***
Off
††† 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).
48
BLACK
4 TRANSFORMER
GROUND
3
5
BLUE
2
8
6
7
ACTULATOR
RED
FEEDBACK
1
(2-10VDC)
10
11
9
ACTULATOR
WHITE
CONTROL
12
(4-20mA)
ECONOMI$ER2 PLUG
N Terminal†
Unoccupied
Closed
Modulating** (between
closed and full-open)
Closed
Modulating†† (between
closed and DCV maximum)
Modulating†††