Installation, Mounting and Maintenance DISA-H
Construction subject to change.
No return possible!
Version:
Checking the primary volumetric flow
The supplied primary volumetric flow can be simply checked by
checking the static pressure with a Pa meter and the measuring
tube available from us as accessory.
To this end, one end of the measuring tube fitted with a rubber
cap is pressed against the air outlet of one of the nozzles at the
primary air plenum box (see drawing) and the other end is con-
nected to the hose connection of a Pa meter.
The values read on the meter and the following formula can be
used to to determine the volumetric flow:
V [l/s] = Primary air flow
Ps [Pa] = Static pressure
The K value is taken from the following table:
Air density:
ρ
= 1.2 kg/m
3
V
ZU
[m
3
/h] = supply air volume
Δ
P [Pa] = pressure loss
L
(mm)
Nozzle configuration 900 1200 1500
D
1,13 1,53 1,93
E
1,9 2,58 3,25
F
3,91 5,29 6,68
When decommissioning the unit or shutting it
down for a longer period in winter, the water must
be drained from the unit, in order to avoid damage
to the register due to the formation of ice. If you
want to use antifreezes, you must first determine
the freezing point.
After recharging the register, the installer has to
make sure by means of on-site ventilation devices
that no air remains in the hydraulic circuit.
V
K Ps
=
The Pa meter is not included in the delivery.
