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14
U-SHAPED
HOLE
(NOT SHOWN)
ECONOMIZER
PLUG
WIRING
HARNESS
4
3
2
1
0
5
6
7
8
9
UNIT
TOP
OAT
(TERMINALS ARE UP)
OUTSIDE AIR
SCREEN
MINIMUM
POSITION
OPEN
3
1
T
P
P1
T1
4
2
5
S
S
O
D
C
TR
B
RE
V
.
B
1
9
8
8
1
8
A
%
H
U
M
I
D
I
T
Y
90
70
60
30
10
D
C
B
A
60
65
70
7
5
55
50
85
8
0
DAMPER
DAMPER
CLOSED
OPEN
OUTDOOR TEMP
.
°
F
R
E
V
.
9
7-36
72
CW
–SETPOINTS
–CCW
CONT
A
CTS SHO
WN IN HIGH ENTHALPY
R
U
S
H
A
T
2
4
V
A
C
3 m
A
M
IN. A
T 1
1 VDC
CONT
ACT RA
TINGS: 1.5A
RUN, 3.5A IN
OR UNPOWERED ST
A
TE
1
2
3
TR
TR1
24V
A
C
ENTHALPY CONTROL
ENTHALPY
CONTROL
HOOD
Fig. 18 — Typical Durablade Economizer and
Wiring Harness
Example:
Given —
Negative Pressure. . . . . . . . . . . . . . . . . . . . . . . . . . .0.1 in. wg
Outdoor Airflow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1100 cfm
Determine —
Setting = 6
Fig. 19A — Durablade Economizer Damper
Minimum Position Setting
Fig. 19B — Durablade Economizer Minimum
Position Damper Setting
Fig. 21 — Wiring Connections for
Outdoor-Air Thermostat
Fig. 20 — Outdoor-Air Thermostat/
Enthalpy Control Installation