York PREDATOR 150 - Manual (Page 23)

035-17311-002-A-0803
Unitary Products Group 23
FIGURE 20 - ENTHALPY SET POINT CHART
40
(4)
70
(21)
50
(10)
55
(13)
60
(16)
65
(18)
35
(2)
45
(7)
75
(24)
80
(27)
35
(2)
40
(4)
45
(7)
50
(10)
55
(13)
60
(16)
65
(18)
70
(21)
75
(24)
80
(27)
85
(29)
85
(29)
90
(32)
90
(32)
105
(41)
110
(43)
100
(38)
95
(35)
95
(35)
100
(38)
105
(41)
110
(43)
APPROXIMATE DRY BULB TEMPERATURE - 0 F ( 0 C)
D
D
C
C
B
B
A
A
CONTROL
CURVE
CONTROL POINT
APPROX. 0 F ( 0 C)
AT 50% RH
A
D
C
B
63 (17)
73 (23)
70 (21)
67 (19)
FIGURE 21 - HONEYWELL ECONOMIZER CONTROL W7212
N1 N
P1 P
EXH
Set
EXH
Min
Pos
IAQ
Max
IAQ
IAQ
Min
Free
Cool
T T1
AQ1 AQ
SO+ SO
SR+ SR
A
B C
D
TR TR1
24
Vac
HOT
24
Vac
COM
EF EF1
2
3 4
5
1
+
Exhaust Air
Adjustment
Screw
Exhaust Air LED
Damper Min.
Position
Screw
Indoor Air Quality
Max. Adjustment
Screw
Indoor Air Quality
LED
Indoor Air Quality
Min. Adjustment
Screw
Free Cooling LED
Economizer Enthalpy
Set Point Adjustment
Screw