FAN FILTER UNIT - HIGH EFFICIENCY
INSTALLATION & SERVICE INSTRUCTIONS
Filter/Motor Indicator LED (FL/ML) – BTR
Sample line string below:
FFU-HE/24/48/
BTR
/BC/ECM/115/10//CT//HEPA//ECMDX//WK/DSW/PC/TMB///
ML
/
FL
/WPF/PL-AL///PL-MILL//
LED Operation
Option
Code
LED
Color
Action
Notes
Filter LED
FL
Green
None
Indicates normal operation until filter pressure drop exceeds calibrat-
ed pressure drop (factory set at 1.5x clean filter pressure).
Yellow
Change Filter
Indicates filter pressure drop has exceeded calbirated setting (factory
set at 1.5x clean filter pressure.
Motor
LED
ML
Green
None
Indicates normal motor operation when the static pressure is above
0.2" w.g.
Red
Troubleshoot Motor
Indicates motor is not in operation, and that unit static pressure is
below 0.2" w.g.
Installation
STEP 1:
Remove BTR filter from box by following the instructions found on page 23 of this installation manual.
STEP 2:
Take LED cable assembly out of FFU-HE Plenum
Cable Assembly
27
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