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MANDÍK CPV Installation, commissioning, and maintenance
Fig 8 Right-hand unit configuration (the fan test ports are opposite for left-hand unit configuration)
Once differential pressure is measured [Pa], air output
for the given fan and the equations specified in the fan sticker.
Air output may also be calculated as follows:
Fig 10 Measurement instrument connection.
Equation for calculating air output
k = k-factor (table above),
Fan speed is adjusted by changing fan output [%] to correct for any deviations between the
measured air output and the air output set point specified by the project (technical
specifications). Increased output = increased air output and vice versa.
IZU 06/2021
Fig 9 K-factors for open fan impellers Applies
for an air density of 1.2 kg/m3
p
w
= measured pressure differential [Pa]
MANDÍK, a.s., www.mandik.cz
Supply fan test port for measuring
fan differential pressure
Return fan test port for measuring
fan differential pressure
3
m
/h
is calculated using the k-factor
3
m
/h
.
R
25
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