Installation Instructions
3.0 Unit Installation
Profile
3.3.8. Lift the fan deck onto the roof and reinstall into the unit. Ensure the venturi is
correctly rotated for the motor wiring loom and has snapped into the location
notches. Spin fan blade by hand to ensure that the blade does not touch the
inlet ring.
3.3.9. Reconnect the fan loom to the control box.
3.3.10. Connect the 24-volt water solenoid cable to the control (where fitted).
3.3.11. Connect communication cables to the control box
3.3.12. Feed the communication cable and the 240-volt plug and cable set through
the 50mm electrical entry drilled into the dropper duct. Ensure the 50mm
rubber grommet supplied is used to ensure an electrical hazard is not created.
3.4. Installing the Duct Work
3.4.1. Use only insulated ductwork to a thermal resistance of
insulation minimum of R0.6, designed and installed to
‘CELRES’ System Design guidelines. All bends must have a
minimum radius of 1.5 times the diameter. All joins must be
taped airtight.
3.4.2. Flexible ductwork connected to the dropper duct must be designed and
installed to the ‘CELRES’ System Design Guide in conjunction with industry
based best guidelines.
3.4.3. Cut flexible duct to the correct length to ensure no excess duct is left in the
system. This will insure minimum system resistance and maximum air flow.
3.4.4. All duct work should be streamlined. Avoid sharp angles that will reduce
airflow.
3.4.5. The minimum bend radius is 1.5 times the duct diameter
3.4.6. The last bend to each ceiling register must be a smooth radius so that airflow
is even into the room.
3.4.7. Do not squash duct work to fit through small openings, as airflow will be
restricted. Find a better location.
3.4.8. If more than 6 metres of flexible duct work are required in one length, the next
size up flexible duct must be used.
3.4.9. All duct work in ceiling spaces or hot areas must be well insulated.
3.4.10. All external exposed duct work must be weatherproofed.
3.4.11. All duct work must be taped airtight.
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