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FOR OCCUPANCY CONTROL
REPLACE JUMPER WITH
FIELD-SUPPLIED TIME CLOCK
LEGEND
DCV— Demand Controlled Ventilation
IAQ — Indoor Air Quality
LA —Low Ambient Lockout Device
OA T— Outdoor-Air Temperature
POT— Potentiometer
RAT— Return-Air Temperature
Potentiometer Defaults Settings:
Power Exhaust Middle
Minimum Pos. Fully Closed
DCV Max. Middle
DCV Set Middle
Enthalpy CSetting
NOTES:
1. 620 ohm, 1 watt 5% resistor should be removed only when using differential
enthalpy or dry bulb.
2. If a separate field-supplied 24 v transformer is used for the IAQ sensor power
supply, it cannot have the secondary of the transformer grounded.
3. For field-installed remote minimum position POT, remove black wire jumper
between P and P1 and set control minimum position POT to the minimum
position.
8
7
C06028
Fig. 72 -- EconoMi$er IV Wiring
4
3
5
2
8
6
7
1
10
11
9
12
PINK
VIOLET
BLACK
BLUE
YELLOW
NOTE 1
NOTE 3
RUN
500 OHM
RESISTOR
50HJ540573
ACTUATOR
ASSEMBLY
RED
WHITE
ECONOMISER2 PLUG
DIRECT DRIVE
ACTUATOR
4-20mA SIGNAL
OAT SENSOR
4-20 mA
TO J9 ON
PremierLink
BOARD
24 VAC
TRANSFORMER
GROUND
NOTES:
1. Switch on actuator must be in run position for economizer to operate.
2. PremierLink™ control requires that the standard 50HJ540569 outside-air sensor be replaced by either the CROASENR001A00 dry bulb sen
sor or HH57A077 enthalpy sensor.
3. 50HJ540573 actuator consists of the 50HJ540567 actuator and a harness with 500-ohm resistor.
C08310
Fig. 73 -- EconoMi$er2 with 4 to 20 mA Control Wiring
48TC