Assembly with depression :
Z: X+Y+tubing di insulation thickness
Y: Y = 0.5 * X
X: X = 25 mm for each 250 Pa of negative static pr 25 mm
Slight slope of
0.005
Negative pressure
recovery pan
To sewer
system
mmWC
Z (mm)
Y
(mm)
X (mm)
Assembly with pressure:
X = 12 mm
Y = 12 mm + total static pressure (1 mm for 10 Pa)
X
Y
NB: the condensate pan on the heat recovery unit is pressurised on the “Vertical PHE" model, and is also pressurised if
there is a cooling or mixed coil in the additional casing.
5.3 - FLOWAY CLASSIC RHEZ / VERIFICATION OF PRESSURES
Verification of the pressures for EATR limitation :
-
The limitation of the EATR value depends on the size of the installation and, specifically, the pressure drop on the exhaust air
duct
-
The presence of a manual control damper may however prove necessary to balance these pressures correctly (damper not
supplied by CIAT): contact the installation's design engineer
-
This verification is used to adjust the installation so that any inclusion of exhaust air in the fresh air during recirculation is avoided
-
The Floway Cassic RHE-Z is equipped with pressure connections P11 and P22 for diagnostics as follows:
∆P
22
x
11
>
0
22
11
ETA
SUP
Exhaust air
Fresh air
P22
Pressure connection
P11
5 – INSTALLATION AND INSTALLATION CONNECTIONS
EN-31 FLOWAY
