Installation Preparation; Wall Preparation; Ceiling Preparation - Zehnder Rittling Unity ZCV3si Installation And Operating Instructions Manual

Installation Preparation

Electrical installation must only be carried out
by a qualified Electrician and in accordance
with local regulations.
The Unity ZCV3si fan is supplied with a
100mm nominal spigot for connection of
ducts for installation - 100mm diameter rigid
duct should be used to provide the best
performance levels required for compliance
with Building Regulations.
Preparing your fan for installation
Upon removal from packaging, rotate 'outer cover'
anticlockwise until retaining clips are released and
place the cover to one side.
Loosen retaining screw in main body cover and
rotate anticlockwise to remove.
The unit can be installed on a wall, window (with separate adaptor kit) or ceiling mounted and ducted.

Wall Preparation

Ø = between 102mm - 117mm
(to suit ducting dimensions)
llow a clearance of 50mm from
wall/ceiling edges around the fan .
Cut the duct to depth of the
plasterboard or tiled wall
with slight fall to exterior
(Make provisions for cable).
Fill in any gaps with mortar
or foam and make good
internal and external walls.
Make sure that ducting
retains its original shape.
Installation Preparation
CV3 Cover Ø 197mm
ZCV3si Cover Ø197mm
Main body
Outer cover

Ceiling Preparation

Ø = 105mm
Cut an
opening
through the
ceiling for
the fan and
electrical
cable.
X
Ø
X = 65 Ø = 105mm
48mm
58mm 68mm
126mm
Retaining
screw
Window Preparation
Cut circular hole
within window pane.
• minimum Ø = 118mm
• maximum Ø = 130mm
See instructions
with window kit for
installation details.
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