15
ENGLISH
L1315004 Installation guide for DucoBox Energy Premium (Revision H | 10.02.2020)
06.D
Connecting air ducts
Choosing air ducts
Flow rate and maximum air velocity are defining factors in
choosing the right ducting in order to avoid generating any
extra obtrusive noise and pressure drop (see table)�
Make sure that the total counter pressure in the ducts is as
low as possible (preferably ≤ 150 Pa) and that the airspeed
in every duct does not exceed 3 m/s�
Desired flow rate
(m³/h)
Minimum recommended duct diameter
(mm)
0-30
^
100
30-150
^
125
150-250
^
150
250-340
^
180
340-400
^
200
06.E
Vents
You should preferably use Duco vents, DucoVent Basic or DucoVent Design� See the technical data sheet or fitting instructions for
the DucoVent Basic or Design for details� It is best to bear a few rules in mind when fitting vents:
• Take care to ensure that the supply and exhaust vents are a minimum of 1.5 m van apart so they cannot come into contact�
• It is preferable not to fit a vent right next to a wall in order to prevent soiling�
• In order to cut down resistance, we recommend using 125 mm dia� vents only�
• Maximum exhaust flow rate per vent: 75 m³/h�
• Maximum supply flow rate per vent: 50 m³/h�
Air ducts to HOUSE
Air ducts to OUTDOORS
SUP
Supply
Supply air from unit to house
ODA
Outdoor Air
Supply air from outdoors to the unit
ETA
Extract Air
Supply air from the house to the unit
EHA
Exhaust Air
Exhaust air from the unit to outdoors
Connecting air ducts
When connecting the ductwork, it must be taken into account whether it is a left-hand or right-hand configuration� Air duct connec-
tions are also indicated on the DucoBox Energy Premium by means of stickers�
Fresh
air
Stale air
RIGHT-HAND configuration
EHA
SUP1
SUP2
ETA
ODA
OUTDOORS
HOUSE
LEFT-HAND configuration
EHA
SUP1 SUP2
ETA
ODA
OUTDOORS
HOUSE
