Section 6 – Control and Service menu
6.3 Installer menu
Access: Press the and OK buttons
simultaneously and keep pressed for 5s
Fig 6.6 Installer menu :
The Installer menu is used to make and
change the settings for the operation of
the ventilation system.
The settings chosen will depend on the
individual requirements of each building.
(See Table 3.1 for specifications).
6.3.1 Set Supply and Extract flow rates (Speed 1, Speed 2 and Speed 3)
Ensure the Supply and Extract grills are all open in all rooms.
Set the overall (TOTAL) flow rates, at the 3 speeds, using the Installer Menu on the unit.
The Supply leg and Extract leg with the highest pressure drop should have their grills fully open.
Adjust the other grills to proportionally balance the system.
If required, make small adjustments to the TOTAL air flow rates using the Installer Menu on the unit.
Fig. 6.7 Installer menu: Set the Air flow rates
Use the “Set the Air flow” menu to change the overall (TOTAL) flow rates at Speed 1 and 2 and 3 for the
Supply and the Extract fans.
The settings are all shown as a % of full speed.
Note : MVHR 180 full speed = 225 m³/hr. MVHR 350 full speed = 360 m³/hr. (10 m³/hr = 2.8 l/s).
On all models, except the Natural Air 350 and Natural Air 350 Plus, the fans are constant volume, so the set
flow rate values will be maintained for all normal configurations of duct work and grilles.
NOTE!
The TOTAL air volume CANNOT be controlled by closing the individual room grills.
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