2.1 How to change the spigot size
The CYFAN-C is fitted with a 125mm dia. spigot, if a 100mm dia.
spigot is required follow the following steps.
n
Remove the front cover and grille
n
Remove fan scroll from fan casing (Do not disconnect wiring)
n
Using a PH2 screw head driver remove 4 off No8
1
⁄
4
inch
screws
n
Remove 125mm spigot
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Place 100mm dia. spigot into position (as shown in fig 3)
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Replace 4 off No8
1
⁄
4
inch screws
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Replace fan scroll on fan casing
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Replace front cover and grille
Fig 1. Screws to be removed and refitted during spigot change.
2.2 Fitting back draught shutters
to the spigot
The CYFAN-C kit comes complete with back draught shutters for
100mm and 125mm spigots, however these are not fitted as
standard and
should not be used when using your CYFAN-C in
continuous operation.
It is also recommended that you should not fit back draught shutters
if your intermittent operation duties are below 15 l/s and for
installations other than directly through the wall application to avoid
failure of the shutters opening.
Please follow these simple steps to fit your back draught shutters if
required:
It is advised to fit the shutters before installing the fan unit.
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Collect all required parts
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125mm shutters (2 off 41285) or 100mm shutters (2 off 41286)
n
Spring (Part of Fixing Kit 770173)
Fit 1 shutter with the part number facing in, by placing the bottom
pin into the bottom hole, slightly deflect the shutter and then fit the
top pin into the top hole. Repeat this process for the other shutter.
Fig 2. Fit spring to the bottom of the two shutters.
2.3 Conversion from 230V to 24V
1. Unpack the fan unit, components and transformer. Ensure that
all parts listed on page 1 are present. If not please contact the
manufacturer for replacement / missing parts.
2.
Place the front cover and inlet grille to one side.
3.
Remove the PCB cover by removing 2 off No6 x
1
⁄
2
inch screws.
4.
Partially remove the PCB assembly from the fan casing by
placing a finger tip behind the dip switches and pulling the PCB
away from the fan casing. (see fig 3).
Fig 3. Removal of PCB cover from casing.
Continued on the following page.
CYFAN-C EXTRACT FANS
INSTALLATION AND MAINTENANCE
3
10. 05. 17. Leaflet Number 691500
O
SECTION 2.0
UNIT PREPARATION
O
Spring.
Fan Cover.
Fan Grille.
Fan Scroll.
Fan Casing.
Impeller.
PCB cover
PCB assembly