Fig. 35 — psychrometric chart for enthalpy control, Fig. 36 — economizer details 28 – Carrier SINGLE PACKAGE ROOFTOP UNITS ELECTRIC COOLING/GAS HEATING EY024-048 User Manual
Page 28
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NOTE: Switches shown in high enthalpy state. Terminals 2 and 3 close
on enthalpy decrease.
Fig. 34 — Wiring Connections for Solid-State
Enthalpy Control (HH57AC077)
CONTROL
CURVE
CONTROL POINT
(APPROX. DEG.)
AT 50% RH
A
73 (23)
B
70 (21)
C
67 (19)
D
63 (17)
RH — Relative Humidity
Fig. 35 — Psychrometric Chart for
Enthalpy Control
NOTE: Partitions shown indicate both side supply (EW/EY) and ver-
tical supply (EJ/EK) units.
Fig. 36 — Economizer Details
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