Connecting The Pressure Sensors; Dirty Filters; Fan Controls; Connecting The Constant Pressure Or Constant Airflow Equipment - S&P UTBS Série Instructions De Montage

6.7. CONNECTING THE PRESSURE SENSORS

6.7.1. DIRTY FILTERS

The equipment is equipped with 2 pressure taps on each side of the filters so that a pres-
sure switch can be installed to control dirt levels in the filters. Section 9.5 presents a table
with the values recommended for filter replacement.

6.7.2. FAN CONTROLS

• The unit has 3 pressure taps to maintain the fan at a constant airflow or constant pres-
sure. To be able to control the fans at constant airflow, factor K shown in the following
table must be entered:
UTBS-2
UTBS-3
UTBS-5
UTBS-8
6.7.2.1 CONNECTING THE CONSTANT PRESSURE OR CONSTANT
AIRFLOW EQUIPMENT
K=69
K=84
K=84
K=104
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