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Economizer
Step 13 — Adjust Factory- -Installed Options
Smoke Detectors —
Smoke detector(s) will be connected at the Central Terminal
Board (CTB), at terminals marked "Smoke Shutdown".
Remove jumper JMP 3 when ready to energize unit.
EconoMi$er IV Occupancy Switch —
Refer to Fig. 87 for general EconoMi$er IV wiring.
External occupancy control is managed through a
connection on the Central Terminal Board.
If external occupancy control is desired, connect a time
clock or remotely controlled switch (closed for Occupied,
open for Unoccupied sequence) at terminals marked
OCCUPANCY on CTB. Remove or cut jumper JMP 2 to
complete the installation.
Step 14 — Install Accessories
Available accessories include:
Roof Curb (must be installed before unit)
Thru- - base connection kit (must be installed before unit
is set on curb)
Manual outside air damper
Two- - Position motorized outside air damper
EconoMi$er IV (with control and integrated barometric
relief)
EconoMi$er2 (without control/for external signal and
integrated barometric relief)
Fig. 87 - - EconoMi$ert IV Wiring
Barometric relief
Power Exhaust
Differential dry- - bulb sensor (EconoMi$er IV)
Outdoor enthalpy sensor
Differential enthalpy sensor
Time Guard II compressor anti- - cycle control
Outdoor coil protector grille
Head pressure control
Programmable setback thermostat
Electrical/Mechanical thermostat and subbase
Thermidistatt device
Humidistat
Thermostat / Sensors
CO
DDC interface (PremierLink)
Louvered hail guard
Phase monitor control
Refer to separate installation instructions for information
on installing these accessories.
Pre- -Start and Start- -Up
This completes the mechanical installation of the unit.
Refer to the unit's Service Manual for detailed Pre- - Start
and Start- - up instructions.
46
Unit Without Economizer or
2 Position Damper
2 Position Damper
sensor
2
C10333
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