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15. Install the hood assembly on to the unit (see Fig. 12 and 13).
16. Through the outdoor air hood, review and adjust the
EconoMi$er IV controller settings. See "Operation" section
of this manual for details.
a. The standard EconoMi$er IV controller has a factory
setting of 63°F for the outdoor air temperature
changeover and 55°F (fixed) for the supply air
temperature sensor. The outdoor air temperature
changeover setting is adjusted on the sensor by setting
the dip switches on the sensor. (See Fig 14.) The ABCD
potentiometer on the controller should be set to the "D"
position.
b. The low temperature compressor lockout switch is fixed
at 42°F.
c. The minimum position for the outdoor air damper can
be configured for specific job requirements at the
controller. When not using with a CO
Max potentiometer on the controller must be fully
closed (CCW) for the Minimum Position potentiometer
to function correctly.
d. Settings for the optional outdoor enthalpy sensor, indoor
enthalpy sensor, power exhaust, and CO
configured at the controller.
17. Install the hood screens and other approved EconoMi$er IV
accessories.
NOTE: See Fig. 15 for wiring diagram.
Insert
Air Screen
Fig. 11 — Outdoor Air Screen Installation
sensor, the DCV
2
Outdoor
Air Hood
sensor can be
2
Relief Damper
Slide
Into
Position
7
Fig. 12 — Completed Hood Assembly
Fig. 13 — Hood Assembly Installed on Unit
CHANGEOVER
DIP SWITCH
TEMPERATURE
POSITION
ON
OFF
1 2 3
ON
OFF
1 2 3
ON
OFF
1 2 3
ON
OFF
1 2 3
ON
OFF
1 2 3
ON
OFF
1 2 3
ON
OFF
1 2 3
ON
OFF
1 2 3
Fig. 14 — Selectable Temperature Options
48°F
53°F
55°F
58°F
63°F
68°F
73°F
78°F
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