Carrier 50HJQ004 Installation, Start-Up And Service Instructions Manual page 27

ENTHALPY CONTROLLER
RED
BRN
B
TR TR1
C
A
D
+
SO
+
SR
3
2
1
LED
NOTES:
1. Remove factory-installed jumper across SR and + before connecting
wires from return air sensor.
2. Switches shown in high outdoor air enthalpy state. Terminals 2 and 3
close on low outdoor air enthalpy relative to indoor air enthalpy.
3. Remove sensor mounted on back of control and locate in outside air-
stream.
Fig. 20 --- Outside and Return Air Sensor Wiring
Connections for Differential Enthalpy Control
HH57AC078 ENTHALPY
SENSOR (USED WITH
ENTHALPY CONTROL
FOR DIFFERENTIAL
ENTHALPY OPERATION)
Fig. 21 --- Differential Enthalpy Control,
Sensor and Mounting Plate (33AMKITENT006)
WIRING
HARNESS
ACTUATOR
Fig. 22 --- EconoMi$er IV Component Locations
(OUTDOOR
S
AIR
+
ENTHALPY
BLK
SENSOR)
RED
S
(RETURN AIR
ENTHALPY
+
SENSOR)
GRAY/ORN
WIRE HARNESS
IN UNIT
GRAY/RED
C06019
HH57AC077
ENTHALPY
CONTROL AND
OUTDOOR AIR
BRACKET
ENTHALPY SENSOR
C 7 4 0 0
A 1 0 0 4
MOUNTING PLATE
C06020
ECONOMI$ER IV
CONTROLLER
OUTSIDE AIR
TEMPERATURE SENSOR
LOW AMBIENT
SENSOR
C06021
ECONOMI$ER2
PLUG
BAROMETRIC
RELIEF
DAMPER
Fig. 23 --- EconoMi$er2 Component Locations
FILTER ACCESS PANEL
Fig. 24 --- Typical Access Panel Locations
Fig. 25 --- Hood Box Removal
IMPORTANT: If the power exhaust accessory is to be installed
on the unit, the hood shipped with the unit will not be used and
must be discarded. Save the aluminum filter for use in the power
exhaust hood assembly.
3. The indoor coil access panel will be used as the top of the
hood. Remove the screws along the sides and bottom of
the indoor coil access panel. (See Fig. 26.)
4. Swing out indoor coil access panel and insert the hood
sides under the panel (hood top). Use the screws provided
to attach the hood sides to the hood top. Use screws
provided to attach the hood sides to the unit. (See Fig. 27.)
5. Remove the shipping tape holding the economizer
barometric relief damper in place.
27
OUTDOOR
AIR HOOD
HOOD
SHIPPING
BRACKET
GEAR DRIVEN
DAMPER
C06022
COMPRESSOR
ACCESS PANEL
OUTDOOR-AIR OPENING AND
INDOOR COIL ACCESS PANEL
C06023
HOOD BOX
BRACKET
C06024