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53
LEGEND
RH — Relative Humidity
Fig. 48 — Psychrometric Chart for Enthalpy Control
NOTE: Partitions shown indicate both side supply (AW,AY,EW,EY) and vertical supply (AJ,AK,EJ,EK) units.
Fig. 49 — Economizer Details
CONTROL
CURVE
CONTROL POINT
(APPROX. DEG.)
AT 50% RH F (C)
A 73 (23)
B 70 (21)
C 67 (19)
D 63 (17)