Fig. 36 — economi$eriv wiring, Fig. 37 — economi$er2 wiring – Carrier 48TM016-028 User Manual

Page 26

LEGEND

DCV — Demand Controlled Ventilation
IAQ

— Indoor Air Quality

LALS — Low Temperature Compressor

Lockout Switch

OAT — Outdoor-Air Temperature
POT — Potentiometer

Potentiometer Default Settings:
Power Exhaust

Middle

Minimum Pos.

Fully Closed

DCV Max.

Middle

DCV Set

Middle

Enthalpy

C Setting

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.

Fig. 36 — EconoMi$erIV Wiring

PINK

BLACK

BLUE

NOTE 1

NOTE 2

RUN

500 OHM
RESISTOR

50HJ540573

ACTUATOR

ASSEMBLY

RED

WHITE

ECONOMISER2 PLUG

DIRECT DRIVE

ACTUATOR

OAT

LEGEND

OAT — Outdoor Air Temperature Sensor

NOTES:
1. Switch on actuator must be in run position for economizer to operate.
2. 50HJ540573 actuator consists of the 50HJ540567 actuator and a harness with 500-ohm resistor.

Fig. 37 — EconoMi$er2 Wiring