37
POSSIBLE CAUSE VERIFICATION SOLUTION
High Supply Air Plenum Static Check static pressure as described Check for and add flow restrictors
Pressure on page 38 in this manual. as necessary in supply runs.
If necessary, add additional outlets.
Sound Attenuating Tube Not Check for installation of sound Where necessary, install sound
Installed attenuating tube. attenuating tube.
Tight Radius In Sound Attenuating Check all tubing for tight radius. Where necessary, correct radius.
Tube Or In Supply Tubing
Incorrect Supply Tubing Length Check that all supply tubing runs Where necessary, correct supply
are 9 ft minimum (includes 3 ft tubing length.
sound atten. tube).
Improperly Balanced System Check that correct size orifices Properly orifice supply tubing runs.
have been installed.
CONDITION: EXCESSIVE NOISE AT TERMINATOR
POSSIBLE CAUSE VERIFICATION SOLUTION
Air Leak At Supply Air Plenum Check taped joint at adaptor. Tape joint properly.
Adaptor
Insulation at Outlet Not Installed Check for insulation at outlet. Install insulation.
CONDITION: SWEATING AT ESP-J UNIT SUPPLY OUTLET
POSSIBLE CAUSE VERIFICATION SOLUTION
Foreign Matter in Blower Wheel Check for loose or damaged blower Replace blower assembly.
wheel.
Blower Wheel Damaged or Remove and inspect blower assembly. Remove any foreign matter and
Unbalanced retest fan vibration.
CONDITION: EXCESSIVE VIBRATION AT ESP-J UNIT
POSSIBLE CAUSE VERIFICATION SOLUTION
Return Air Duct Not Installed Check for minimum 90˚ bend in Correct bend in return air duct
Properly return air duct. to minimum 90˚.
Dirty Return Air Filter Remove and inspect. Clean or replace air filter.
CONDITION: EXCESSIVE NOISE AT RETURN AIR GRILL
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