User Manual 53
DOL 534 • DOL 539
3.9.4 Start Tunnel
The controller continuously calculates which inside temperature is required before Tunnel ventilation can be
activated (only Combi-Tunnel).
• To change to tunnel at a lower inside temperature, you must reduce the chill factor.
• To change to tunnel at a higher inside temperature, you must increase the chill factor.
3.9.5 Current Air Speed
The current air speed is a calculated value (metres/sec.). The climate and production controller calculates the
current air speed through the house based on the cross-sectional area (m
2
) and the current capacity of the tunnel
fans.
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