W7340, W7345 COMMUNICATING ECONOMIZER LOGIC MODULES
63-2569—04 10
Fig. 10. W7340 Performance Characteristics for Enthalpy Changeover Settings.Table 3. W7345 Performance Characteristics for Temperature Changeover Settings.
CONTROL
CURVE
A
B
C
D
E
CONTROL POINT
APPROX. °F (°C)
AT 50% RH
73 (23)
70 (21)
67 (19)
63 (17)
55 (13)
12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46
90
100
80
70
60
50
40
30
20
10

ENTHALPY—BTU PER POUND DRY AIR

85
(29)
90
(32)
95
(35)
100
(38)
105
(41)
110
(43)
35
(2)
35
(2)
40
(4)
40
(4)
105
(41)
110
(43)
45
(7)
45
(7)
50
(10)
50
(10)
55
(13)
55
(13)
60
(16)
60
(16)
65
(18)
65
(18)
70
(21)
70
(21)
75
(24)
75
(24)
80
(27)
80
(27)
85
(29)
90
(32)
95
(35)
100
(38)

APPROXIMATE DRY BULB TEMPERATURE— °F (°C)

A

A

B

B

C

C

D

D

M23879
RELATIVE HUMIDITY (%)
1
1
HIGH LIMIT CURVE FOR W7210D, W7212, W7213, W7214, W7340B.

E

E

Temperature Changeover SettingApproximate Control Point°F °CA7323B7021C6719D6317E5513