Carrier 50HE003-006 Installation Instructions Manual page 37

LEGEND
DCV— Demand Controlled Ventilation
IAQ — Indoor Air Quality
LA — Low Ambient Lockout Device
OAT — Outdoor-Air Temperature
POT — Potentiometer
RAT — Return-Air Temperature
NOTE 1
RUN
NOTE 3
50HJ540573
ACTUATOR
ASSEMBLY
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 outside-air sensor be replaced by either the CROASENR001A00 dry bulb sensor or HH57A077
enthalpy sensor.
3. 50HJ540573 actuator consists of the 50HJ540567 actuator and a harness with 500-ohm resistor.
Outdoor Enthalpy Changeover
For enthalpy control, accessory enthalpy sensor (part number
HH57AC078) is required. Replace the standard outdoor dry bulb
temperature sensor with the accessory enthalpy sensor in the same
mounting location. (See Fig. 27.) When the outdoor air enthalpy
rises above the outdoor enthalpy changeover set point, the
outdoor-air damper moves to its minimum position. The outdoor
FOR OCCUPANCY CONTROL
REPLACE JUMPER WITH
FIELD-SUPPLIED TIME CLOCK
Potentiometer Defaults Settings:
NOTES:
Power Exhaust Middle
1. 620 ohm, 1 watt 5% resistor should be removed only when using differential
Minimum Pos. Fully Closed
DCV Max. Middle
2. If a separate field-supplied 24 v transformer is used for the IAQ sensor power
DCV Set Middle
Enthalpy C Setting
3. For field-installed remote minimum position POT, remove black wire jumper
Fig. 34 --- EconoMi$er IV Wiring
500 OHM
RESISTOR
-
+
OPTIONAL CO
2
SENSOR 4 - 20 mA
OUTPUT
Fig. 35 --- EconoMi$er2 with 4 to 20 mA Control Wiring
enthalpy or dry bulb.
supply, it cannot have the secondary of the transformer grounded.
between P and P1 and set control minimum position POT to the minimum
position.
VIOLET
PINK
enthalpy changeover set point is set with the outdoor enthalpy set
point potentiometer on the EconoMi$er IV controller. The set
points are A, B, C, and D. (See Fig. 43.) The factory-installed
620-ohm jumper must be in place across terminals SR and SR+
on the EconoMi$er IV controller. (See Fig. 27 and 44.)
37
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BLACK
4
3
5
BLUE
2
8
6
7
RED
1
10
11
9
WHITE
12
ECONOMISER2 PLUG
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