Fig. 36 — economiser2 wiring, Fig. 35 — economi$erlv wiring – Carrier 48TJ016-028 User Manual

Page 24

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LEGEND

DCV

— Demand Controlled Ventilation

lAQ

— Indoor Air Quality

LALS

— Low Temperature Compressor

Lockout Switch

OAT

— Outdoor-Air Temperature

POT

— Potentiometer

Potentiometer Detault Settings:
Power Exhaust Middle
Minimum Pos,
DCV Max.
DCV Set
Enthalpy

Fully Closed
Middle
Middle

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 lAQ sensor power

supply, it cannot have the secondary of the transformer grounded.

For field-installed remote minimum position POT, remove black wire jumper

between P and PI and set control minimum position POT to the minimum
position.

Fig. 35 — EconoMI$erlV Wiring

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. 36 — EconoMiSer2 Wiring