Carrier WEATHERMASTER 50HJQ016, Product Data

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Typical wiring schematics — 50HJQ
(50HJQ016 460 v shown)
LEGEND
AL — Ambient Limit OA — Outdoor Air
ECB — Economizer Control Board OAS — Outdoor Air Sensor
IA — Indoor Air RAS — Return Air Sensor
IAQ — Indoor Air Quality SAT — Supply Air Temperature
→
ECONOMI$ER IV WIRING — 50HJQ014,016 UNITS
→
ECONOMI$ER IV WIRING — 50HJQ004-012
LEGEND
IAQ — Indoor Air Quality
LA — Low Ambient Lockout Device
POT — Potentiometer
OAT — Outdoor-Air Temperature
RAT — Return-Air Temperature
NOTE:
Potentiometer Defaults Settings:
Power Exhaust
Middle
Minimum Pos. Fully Closed
DCV Max. Middle
DCV Set Middle
Enthalpy C Setting
NOTES:
1. 620 ohm, 1 watt 5% resister should be removed only when using differen-
tial enthalpy or dry bulb.
2. If a separate field-supplied 24v 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.
50H
JQ