Start-Up
142 CLCH-SVX07K-EN
6. If the wheel has difficulty starting, turn off the power
and inspect for excessive interference between the
wheel surface and the four diameter seals. To correct,
loosen the diameter seal adjusting screws and back the
diameter seals away from the surface of the wheel.
Apply power to confirm that the wheel rotates freely.
Readjust and tighten the seals according to
instructions in “Energy Wheel Seal Adjustment,”
p. 160.
7. Damper actuators (if so equipped): Stroke the
actuators to observe full open and full closure of
dampers. Adjust the actuator and/or linkage to prevent
“over-stroking” so excessive pressure is not placed on
the damper at the full open or full closed position.
External Insulating Requirements
The following areas should be specifically addressed, as
applicable:
• Supply and return water piping connections
• Supply and return refrigerant piping connections
• Condensate drain lines and connections
• Outdoor-air-intake duct connections
• Discharge duct connections
• Special requirements for low-temperature-air systems
• Electric duct heaters mounted on the fan discharge
Important: Minimum clearance from combustible
materials: 1 inch for first four feet of duct
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