Zehnder Rittling Unity ZCV3si Installation And Operating Instructions Manual page 6

STEP 4
Turn power off and locate main body cover via the arrow & unlock
position, rotate clockwise to 'lock position'
Tighten retaining screw until main body cover cannot be opened.
Turn power on and follow respective commissioning on pages 7 & 8
A 100mm nominal diameter spigot is provided for connection to ducting. Ductwork should be securely
connected to the back of the fan. Failure to do this will cause unnecessary air leakage and may impair
performance.
6
Unlock position
Retaining screw
Installation
Lock position
STEP 5
Reattach the front cover by
rotating clockwise, utilising
the guidance rail, until firmly
secured by the retaining clips