2 Unit installation
Econofresh Kit
SMGB0099 rev.0 - 12/2016
74
2.11.4 Example of installation
1 Ducting Connection
Pre-drilled duct anges are provided at the supply, return and outdoor air intake connections. It is recommended that 
a exible duct connection be installed to minimize sound and vibration transmission.
2 Insulation
All ducts should be insulated
- Especially the outdoor air duct, through which the cold outdoor air ows in, must be sufciently insulated.
- The lowest temperature of the entering outdoor air owing through the outdoor air duct is the lowest temperature 
for heating operation at the installation site.
Supply Air Duct
RPI Unit
Econofresh
Outdoor Air Duct
(Fully Insulated)
(Field-Supplied)
Downward
Gradient of Duct
Outdoor
Thermistor
(Accessory)
Rain Hood with
Bird Screen
(Field-Supplied)
Pressure relief damper (eld supplied), connected 
if necessary to the outside or to another place with
atmospheric pressure)
Return Air Filter
(Field-Supplied)
Return Air
Duct
Thermistor Cable
(Accessory)
AS Motor Cable
(Accessory)
Refrigerant
Piping
Insulate
(Field-Supplied)
5 mm
In the case that the unit is used under the following condition, perform additional insulation (*) or prepare a drain pan
underneath the unit.
? NOTE
Ducting arrangement must comply with local regulations.
30ºC
*20 mm
*10 mm
*5 mm
80%RH
70%RH
Saturation
Curve
Ambient Temperature around Unit
? NOTE
For further information regarding this product, refer to the installation and operation manual.
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