11
X
6. INSTALLATION
6.2-1 Rectangular to circular
transition
6.2 CONNECT
ING
THE DUCTING
NOTE:
This is an accessory and must be ordered
separately
Example of possible connection with flexible connectors.
NOTE:
Barkell does not supply the accessories portrayed
above
as standard
YOU WILL NEED
• The connected ductwork must have the same di
-
mensions as the inlet and outlet openings of the
ventilation units. In the case of a smaller diame
-
ter of ductwork, turbulence might occur resulting
on a reduction of the unit efficiency and lifetime.
• Connect the inlet and outlet openings (rectangu
-
lar to circular transition) using flexible joints to
avoid vibrations and ensure that these are prop
-
erly aligned with the ductwork.
• All ductwork must be supported independently
from the unit.
• Flexible corrugated ducting can impose high re
-
sistances if formed into tight bends and should
therefore be avoided.
All the dimensions are in
mm
IMPORTANT NOTICE!
• 16 M8 screws
• 4 pcs of rectangular to circular transitions (
accessory
can be acquired from Barkell
)
• appropriate nut wrenches
• sealing tape / sealant
Type
X
Y
D
L
M
F
HRB-PR-01
250
150
200
150
50
20
HRB-PR-02
300
200
250
200
50
20
HRB-PR-03
500
250
315
250
70
20
HRB-PR-04
600
300
400
300
70
20
Ductwork should be connected to the inlets and outlets
of the unit by means of a transition piece.
NOTE:
Barkell does not supply the accessories portrayed
above as standard
Connections to the distribution ductwork should be
made using suitable clamps or clips ensuring that an
airtight joint is made and the ductwork then
insulated
and
taped
down.
The minimum distance
between any ductwork bends or the adapters and
the unit outlets is 500 mm.
SUP
EHA
ETA
OTA
OTA -
Outside air
SUP -
Supply air
ETA -
Extract air
EHA -
Exhaust air
