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MOUNTING
Galaxy belt and roof mounted direct drive fan units, must only be installed horizontally. The
lid of the roof mounting unit should be removed to gain access to fit M10 coach screws (not
supplied by Vent Axia Incorporating Roof Units Limited), when curb mounting.
The optional mounting brackets (2 off brackets per unit) are recommended, when mounting
the duct mounted units (GDD & GDB). Holes will need to be drilled on each side of the unit to
correspond with the respective number of holes provided on each support bracket (4 off –
GDB and 2 off – GDD). Secure each bracket in place utilizing relevant fixings (not supplied
by Vent Axia Incorporating Roof Units Limited), ensuring they are level with each other and
the unit.
Duct mounted direct drive (GDD) units may be mounted for bottom access by making a small
change to the shutters as follows:
1) Remove the lid of the unit and the retaining screws of the outer shutter brackets.
2) Move the nylon bushes to the vacant holes in all shutter brackets.
3) Reassemble shutter flaps into the nylon bushes.
4) Refit the retaining screws of the outer brackets and refit the lid of the unit.
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GENERAL WIRING
Warning:- The Fan And Ancillary Control Equipment Must Be Isolated From The Power
Supply During Installation And / Or Maintenance. The Equipment Must Be Earthed.
Remove the cover from the fan terminal box. Connect the power supply from the local
isolator (via any appropriate controls if fitted) to the terminal box via an appropriate cable
gland. Refer to the wiring diagrams and select the appropriate connections for the fan,
controller or other devices as being installed. Ensure that all earth connections have been
made.
After completing and checking the connections to the terminal box replace the terminal box lid
ensuring that the gasket is correctly seated in place. Ensure that all cable gland / grommet
fixings and terminal box lid fixings are tightened correctly to prevent water ingress.
All fans are fitted with thermal protection, which is self re-setting, excluding GDD1 & GRD1. If
the thermal protection device operates you MUST check for the cause before allowing the fan
to resume operation. Failure to do so may cause damage to the motor and invalidate the
guarantee.
Fuses in the circuit should be regarded as only protecting the wiring against short circuits or
earth faults; they are not suitable for overload protection. Fuse ratings must be able to carry
starting loads, which can be taken as a maximum of six times the running current for 25
seconds.
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CHECK LIST
1) Are all links and wiring complete (refer to wiring diagrams)?
2) Are all fixings secured?
3) Are all relevant guards fitted?
4) Are all protective circuit devices fitted and wired correctly?
5) Are all terminal box covers and gland fittings secure?
6) Are all earth connections secured?
7) Check that no hazard exists for persons in the locality of the fan. Check that the fan
rotation is correct as per the direction arrows on the fan plate / casing. If not isolate
power supply and check wiring.
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