HeatStar XF EC, Product Manual, Page: 15 / 55

14
AIR DUCTING
AIR DISTRIBUTION METHODS :
The heating and climate control product would normally be located in the pool equipment plant room. Therefore
the heated / conditioned air supplied by the climate control product is ideally distributed around the pool room
using a ducting channel.
A ducting channel is a sealed void through which the air travels along on route to the pool room. A typical
ducting channel would be at least 500mm x 400mm in size and often much larger depending upon the amount of
air flow required from the product. Outlet grilles would be used to allow the air to exit the ducting channel at the
desired locations around the pool room.
DUCTING CHANNEL LAYOUT CONSIDERATIONS :
The ducting channel layout should be designed to ensure :
-
The air is discharged via grilles directly onto areas prone to condensation, such as external glazing.
- There are no dead areas of the pool room not covered with a movement of air.
- That the air flow velocity across the pool water surface is low.
- That operational noise transfer is reduced to a minimum.
Due consideration must be given to the position of the pool air intake and supply air ducting connections to the
Heatstar.
All ducting should be sized and designed, together with grilles, dampers, bends, filters and noise attenuators not
to exceed the specified maximum air resistance.
Initially all duct work sizes should be no smaller in area than the respective spigot connection holes on the
Heatstar.
If in any doubt please contact Heatstar.
Care should be taken to ensure that the duct work is not routed across the maintenance access panels on the
Heatstar.
If the pool room is a
‘log cabin’ type construction, due allowance should be made for the ‘setting’ of the building
when positioning wall grilles etc.
All ducting should be as close to air tight as practical.
Flexible ducting or multiple runs of small diameter ducts should not be used as this offers a high restriction on
the flow of air. Drainage pipe cannot be used for the ducting.
POOL AIR INTAKE :
The intake duct should increase in size so it is larger than the area of the pool air intake duct spigot on the
Heatstar.
It is recommended that the air intake spigot on the Heatstar should not be positioned directly through the pool
room wall as excessive noise transfer may occur.
A single 90° bend would notably limit the degree of noise transfer to the pool room.
If noise transfer into the pool room is considered an issue, then the inclusion of a noise attenuator or silencer in
the duct is recommended.
The air inlet grille from the pool room should have a free area of no less than 70% and be as large as possible.
Alternatively, the plant room can be used as a plenum chamber for the pool room air, with either a louvred door
or grille allowing the pool room air in. If this approach is adopted care should be taken to ensure that :