User`s manual
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16
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10. Fasten hood top and side plate assembly to outdoor-
air opening panel with screws provided.
11. Place knob supplied with economizer on OAT. See
Fig. 28. Set for 3° F below indoor room thermostat
setting. If accessory enthalpy control (EC) is used in
place of OAT, see instructions shipped with EC for
installation and adjustment. See Fig. 28.
12. Connect OAT per Fig. 29.
13. Slide outdoor-air inlet screen into screen track on
hood side plate. Slip screen clasp over screens to hold
screens together. While holding screens in place, fas-
ten screen retainer to hood using screws provided.
NOTE: Refer to Fig. 30 for economizer barometric relief
damper characteristics.
I. Optional EconoMi$er Economizer Installation
See Fig. 31 for EconoMi$er component locations.
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
75
55
50
85
80
DAMPER
DAMPER
CLOSED
OPEN
OUTDOOR TEMP
.
°
F
R
E
V
.
97
-3
67
2
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
MIN. 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
24
V
A
C
ENTHALPY CONTROL
ENTHALPY
CONTROL
HOOD
Fig. 28 — Outdoor-Air Thermostat/Enthalpy
Control Installation
Fig. 29 — Wiring Connections for Outdoor-Air
Thermostat
Fig. 30 — Durablade Economizer Barometric Relief Damper
Characteristics
CONTROLLER
BAROMETRIC
RELIEF DAMPERS
OUTDOOR AIR
TEMPERATURE
SENSOR
GEAR-DRIVEN
DAMPER
ACTUATOR
ECONOMI$ER
PLUG
Fig. 31 — EconoMi$er Component Locations