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13
*Includes pressure drop for filters and hoods.
Fig. 19 — Durablade Economizer
Minimum Position Setting
BLOCK-OFF PLATE
Fig. 18 — Horizontal Discharge Block-Off Plate
4
3
2
1
0
5
6
7
8
9
Fig. 20 — Durablade Economizer Minimum
Position Damper Setting
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
80
D
AMPER
D
AMPER
CLOSED
OPEN
OUTDOOR TEMP
.
°
F
REV.
97-367
2
CW
–
SETPOINTS
–
CCW
CONT
A
CTS SHO
W
N IN HIGH ENTHALPY
R
U
S
H
A
T
2
4
V
A
C
3 m
A
MIN.
A
T 1
1 VDC
CONT
A
CT RA
TINGS:
1.5A
R
UN,
3.5A
IN
OR UNPO
WERED ST
A
TE
1
2
3
TR
TR1
2
4V
A
C
ENTHALPY
CONTR
OL
ENTHALPY
CONTROL
HOOD
Fig. 21 — Durablade Economizer Outdoor-Air
Thermostat/Enthalpy Control Installation
Fig. 22 — Wiring Connections for
Outdoor-Air Thermostat