Biddle HR 12 Manual page 13

HR 12 M
ANUAL
2.3 Connecting the unit to the ventilation system
Manual version 1.0 (15-07-2018)
Securing the unit
1. Secure the suspension to the threaded rods by tightening
all lock nuts 3.
Warning:
w
The threaded rods must be secured,
otherwise the unit may fall down.
Using channel sections, connect the unit to the fresh air, the
inside air and to the ventilation units.
When opting for the duct cross-section, take into account:
• The maximum allowable pressure difference for the
required capacity. (see diagram under
volume)
• The desired maximum air velocity.
Note:
n
When adapting to different duct diameters, use
sufficient length in order to prevent turbulence.
If the duct cross-section is too small, this may lead
to reduced capacity and/or noise nuisance.
Note:
n
In order to prevent condensation, Biddle
recommends insulating the channel sections between
the HR unit and the fresh air.
See also:
2.10 "Switching on and checking operation" on page 21
en
I
NSTALLATION
2.10.5 Calibrate air
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