AERCO AERClean - Manual (Page 7)

Page 7
Benchmark Low NOx Series
AERClean Filtration System Instructions
Doc#
TID-0001-0A
Created: 10/13/2010 Revised: 11/11/2010 Owner: BS-Manager_V.D. DOC#: TID-0001-0A
Optional Pressure Monitoring Kits
The purpose of a pressure gauge or switch is to indicate to the boiler operator when the filter
requires either cleaning or replacement. Changing the filter when the pressure drop across a
clogged filter reaches 0.5” W.C. ensures optimum performance. Two optional kits are available for
use with the base AERClean Filtration System. One of the kits allows visual monitoring of airflow
pressure (Magnehelic pressure gauge), while the other is an ADPS (Adjustable Differential Pres-
sure Switch) allowing an alarm or other user supplied relay device to be tripped when pressure
reaches a user specified level.
Both kit packages come with the necessary components to be installed on the boiler. A bracket is
included to mount the gauge or switch in a location where it can be easily observed and monitored
and enough PVC tubing is included for the device to be located up to six feet (6’) away from air
filter assembly. Also included is the barbed fitting necessary to connect the device’s PVC tubing
to the filter housing assembly.
NOTE:
The information on the following pages is provided only as a guideline for installation and opera-
tion of the Dwyer products as supplied as options for the Benchmark Low NOx Filter Kit. Con-
sult the Dwyer website at www.dwyer.com for information regarding specific specifications, mait-
enance, warranty, service, and troubleshooting of these products. AERCO has provided mounting
brackets, but alternative mounting instruction are available on the Dwyer website.
When used at 100% fire rate, a clean filter will show a differential pressure of ~0.1 inches of water
(0.1” W.C.). As the filter accumulates dust and debris this reading will slowly rise. AERCO recom-
mends the filter be replaced when the gauge reading reaches 0.5” W.C. Since the enclosed 2”
pleated Filter has an effective filtration area of 9.9 square feet, it may take a long time of normal
operation to meet this point. In a dusty environment the need for filter replacement will happen
much sooner.
Filter Operation Monitoring and Replacement