Roberts Gorden DAT115 Manuale Utente

14 

DualAir

®

 units are designed to be connected to 

distribution and air inlet ducting.
It is recommended that flexible duct connectors and/
or attenuators are used to reduce duct born noises.
It is recommended that the inlet ducting is arranged 
with both fresh air and recirculating air dampers to 
take advantage of the "free cooling" stage provided.
Distribution ducting must be insulated to prevent 
heat gain during cooling mode.
The air flow must be in the direction as stated for the 
version being installed with the heater at the 
discharge end.

The duct must be designed as described on Page 
14, Section 8.1

 and Figure 10 to ensure that there is 

a homogenous air flow across the whole heat 
exchanger. Failure to provide a properly distributed 
air flow will reduce the life of the heat exchanger.

Dimension

“X”

*Minimum-

Twice

Dimension

“X”

Airflow Indicator

Flexible Flange

Ducting

NOTE: Duct size will be full size of inlet and outlet.
All joints between the heater and duct work should be 
made as air tight as possible.
*Inlet Duct Minimum Dimension same as Outlet Duct 
Minimum Dimension