32
JIK"'
JIK"(
JIK"+
JIK"-
K=6
'
K=
&*%
K=
'%%
K=
'('
7.11.3. CONNECTING THE PRESSURE SENSORS
7.11.3.1. DIRTY FILTERS
The equipment is equipped with 2 pressure taps on each side of the fi lters so that a
pressure switch can be installed to control dirt levels in the fi lters. Connect the pneuma-
tic tubes of the pressure switch respecting the existing identifi cations on the pressure
switch as well as on the pressure taps.
Section 10.5 presents a table with the values recommended for fi lter replacement.
7.11.3.2. Fan controls
• The unit has 3 pressure taps to maintain the fan at a constant airfl ow or constant pres-
sure. To be able to control the fans at constant airfl ow, factor K shown in the following
table must be entered:
