I
NSTALLATION
H
EAT
RECOVERY
UNIT
en-18
en
• The desired maximum air velocity.
Note:
n
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:
2.12 "Switching on and checking operation" on page 27
2.4
Connecting the unit to the central heating and heat recovery sys-
tem
2.4.1 Connecting the water-side control (accessory)
Only for models with water heating/cooling module:
The heating/cooling module can be fitted with a water-side
control to control the temperature of the water battery.
Caution:
c
Biddle supplies suitable 2-way and 3-way valves as
accessories.
1. Connect the control valve and the drive to the heat
exchanger, in accordance with the diagram. In doing so, fol-
low the instructions given in the control valve manual.
Note:
n
Ensure that the axis of the valve is in the correct
position when connecting the drive. See the control
valve manual.