3.3 duct connections
The factory setting is LEFT.
LEFT
Connections from and to outside are set on the left side of the unit front view
DEFAULT
RIGHT
Connections from and to outside are set on the right side of the unit front view
fig. 3.a
Connections in LEFT and RIGHT orientation - QR280E.
3.2 dimensions and Weight
Dimensions in mm.
QR280A
LEFT
A
Intake air from outside
B
Exhaust air to outside
C
Supply air to inside
D
Extract air from inside
RIGHT
A
Extract air from inside
B
Supply air to inside
C
Exhaust air to outside
D
Intake air from outside
Ø125
Ø118
592
55
610
665
298
Weight (kg)
26
227
227
276
276
104
104
90
89
89
A
B
C
D
A
B
C
D
QR280E
Ø
155
Ø
148
778
861
799
62
144
490
144
180
247
123
279
220
549
279
Ø
155
Ø
148
778
861
799
62
144
490
144
180
247
123
279
220
549
279
778
490
144
144
279
279
220
247
180
Ø
155
Ø
148
778
861
799
62
144
490
144
180
247
123
279
220
549
279
Ø148
799
861
62
549
123
Ø155
A
B
C
D
Weight (kg)
50
QR590E
03