56
FOR OCCUPANCY CONTROL
REPLACE JUMPER WITH
FIELD-SUPPLIED TIME CLOCK
LEGEND
DCV—Demand Controlled Ventilation
IAQ— Indoor A ir Quality
LA —Low Ambient Lockout Device
OAT— Outdoor-Air Temperature
POT—Potentiometer
RAT—Return-Air Temperature
PotentiometerDefaults Settings:
PowerExhaust Middle
MinimumPos. Fully Closed
DCVMax. Middle
DCVSet Middle
Enthalpy CSetting
NOTES:
1. 620 ohm, 1 watt 5% resistor should be removed only when using differential
enthalpyor dry bulb.
2. If a separate field-supplied 24 v transformer is used forthe IAQ senso r power
supply,it cannot have the secondary of the transfor mer grounded.
3. For field-installed remote minimum position POT, removeblack 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™ contro l 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