possible, keeping the length between each diffuser and the fan roughly equal may be beneficial but
is not essential. Avoid crossing over the ducting wherever possible.
To tape the ducting onto the fan, diffusers, or Y-branches, first push back the insulation and outer
sleeve to expose the inner ducting, tape this inner ducting, then pull the insulation and outer sleeve
back over and tape down the outer sleeve of the ducting (not required for the diffusers).
Acoustic ducting: Use ~3m of acoustic ducting between the heat transfer inlet and heat transfer fan
to stop any noise from the fan getting transferred back into the heat source room. Additionally,
place ~1m of acoustic ducting between the fan and the first Y-branch to stop noise from the fan
travelling to the outlets.
Insulated ducting 150mm: Use the 150mm insulated ducting to connect the Y-branches in the
system if required.
Insulated ducting 125mm: Use the 125mm insulated to connect the diffusers to the Y-branches. Run
the ducting back to the Y-branch then cut to the required length. Tape the 150-125mm reducer onto
the inner sleeve of the ducting, the place over the Y-branch and tape it in place. Pull the insulation
and outer sleeve over the reducer and tape it onto the Y-branch.
The ducting provided with our heat transfer systems is glass-wool or polyester insulated and has
an insulation rating equivalent of R2.5, and a rating of R1.5 for the acoustic ducting.
Installing the Heat Transfer fan
Place the fan away from living areas and bedrooms to minimise any noise. If possible, place the fan
near the ceiling access hatch for easy access for maintenance.
Using the cable ties and chain provided, suspend the fan from the rafters. Use the cable ties to
connect the fan to the chain, either by looping them through the fan base or the screws holding the
metal rings on the fan in place. Do not connect the fan directly to the chain or screw directly onto
the rafters, as this could result in vibrations and noise.
Suspend the fan from the rafters so that it sits above any ceiling material – about 100-200mm above
the ceiling. The ducting however may be placed directly onto the insulation material inside the
ceiling space and does not need to be suspend from the rafters.
Do not place the fan upside down as this may damage the fan electronics. Cut the chain to the
required length to avoid any noise from the loose chain.
The fan requires a single, standard, power point in the ceiling. It is designed to be plug and play, and
should not be wired into a wall switch. To turn off the fan, use the wall controller to turn off the heat
transfer system, or unplug the fan from the power point.
Installing the room diffusers
Identify the ideal location you wish to place each diffuser. Keep the diffusers away from doorways to
avoid the heated air being sucked out of the room instead of mixing with the air inside the room. It is
fine to place them near windows. The diffusers should not be placed directly above beds or couches.