4
ST-A1230-05
STEP 15:
Provide opening in return air duct to mount the two
barometric relief dampers and hoods
(SEE FIGURE 4)
.
Locate a convenient distance from unit.
STEP 16:
Using self-drilling screws provided, assemble exhaust air
rain hoods (
EXHAUST AIR RAINHOOD – TOP,
EXHAUST AIR RAINHOOD - LEFT SIDE,
EXHAUST
AIR RAINHOOD - RIGHT SIDE,
SPOTWELD ASSY -
BIRD SCREEN) and install in return air duct. Use sealant
(not provided) as required.
STEP 17:
Either open the BLOWER MOTOR HINGED DOOR or
remove the BLOWER MOTOR ACCESS PANEL
(SEE
FIGURE 5)
.
STEP 18:
Connect the
DISCHARGE AIR SENSOR to wires 51
and 52 located in the blower motor compartment.
NOTE:
The sensor is a white wire that ships strapped to the
economizer wire harness. The sensor should be secured
with the included wire tie to avoid entanglement with the
blower and direct contact with any sheet metal surfaces.
STEP 19:
Either close the BLOWER MOTOR HINGED DOOR or
reinstall the BLOWER MOTOR ACCESS PANEL.
STEP 20:
Upon start-up check the economizer sequence of
operation using the steps provided in these instructions.
After testing unit operation and setting outside air damper
minimum position, secure PANEL – LEFT BOTTOM
SECTION
(SEE FIGURE 3)
with remaining screws.
17.790
16.290
18.500
1.500
MIN.
WIRE TIE TO
SECURE SENSOR
FIGURE 4
ST-A1230-07
.000
.000
34.080
RECOMMENDED DUCT OPENING
SUPPLY AIR DUCT
ATTACH TO UNIT
RETURN AIR DUCT
CUT OPENINGS AND
ATTACH TO UNIT
RELIEF DAMPERS
SLIDE IN DUCT
OPENINGS
FIGURE 5
