W7212, W7213, W7214 ECONOMIZER LOGIC MODULES
63-2596—09
10
Fig. 6. S963B1128 Remote Potentiometer used with
logic module for remote damper control.
Fig. 7. W7212A, W7213, W7214 performance characteristics for enthalpy changeover settings.
M20603A
P1
P
ECONOMIZER
R
MINIMUM
POSITION
ADJUSTMENT
W
B
CW
CLOSE
S963B1128 REMOTE
POTENTIOMETER
CW
CONTROL
CURVE
A
B
C
D
CONTROL POINT
APPROX. °F (°C)
AT 50% RH
73 (23)
70 (21)
67 (19)
63 (17)
12 14 16 18 20 22 24 26 28 30 32 3
4 36 38 40 42 44
46
90
100
80
70
60
50
40
30
20
10
ENTHALPY—BTU PER POUN
D DR
Y 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
M11160C
RELA
TIVE HUMIDITY
(%)
1
1
HIGH LIMIT CURVE FOR W7210D, W7212, W7213, W7214, W7340B.