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178113-BIM-D-0906
Figure 16: Enthalpy Set Point Chart
Figure 17: Honeywell Economizer Control W7212
Unitary Products Group
CONTROL POINT
CONTROL
0
0
APPROX.
F (
C)
CURVE
AT 50% RH
A
73 (23)
B
70 (21)
C
67 (19)
D
63 (17)
50
(10)
45
(7)
40
(4)
35
(2)
35
40
45
50
(2)
(10)
(4)
(7)
APPROXIMATE DRY BULB TEMPERATURE -
Exhaust Air
Adjustment
Screw
N1
Exhaust Air LED
Damper Min.
Position
P1
Screw
Indoor Air Quality
T1
Max. Adjustment
Screw
Indoor Air Quality
LED
AQ1
Indoor Air Quality
Min. Adjustment
SO+
Screw
Free Cooling LED
SR+
Economizer Enthalpy
Set Point Adjustment
Screw
85
90
(29)
(32)
80
(27)
75
(24)
70
(21)
65
(18)
60
(16)
55
A
(13)
B
C
D
A
B
C
D
55
60
65
70
75
80
85
90
(13)
(16)
(21)
(24)
(27)
(29)
(32)
(18)
EXH
N
Set
EXH
P
Min
Pos
T
IAQ
Max
IAQ
AQ
IAQ
SO
Min
Free
Cool
SR
B
C
A
D
110
95
100
105
(35)
(38)
(41)
(43)
95
100
105
110
(38)
(41)
(43)
(35)
0
0
F (
C)
TR
TR1
24
24
Vac
Vac
HOT
COM
+
1
2
5
3
4
EF
EF1
25
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