Viessmann VR1 22 - Minimum Clearances to Combustibles; Recommended Minimum Clearances for Service

Vitorond 100, VR1 22 to 33, 91 to 140 Installation and Service
5583 571 - 05
12
Set-up
Minimum Clearances to Combustibles
Legend
A Boiler
B Burner
For typical installations, Viessmann recommends installing
the boiler with clearances as shown in Recommended
Minimum Clearances for Service.
The following are clearances to combustibles:
Standard installation
Boiler model VR1 22, 91 27, 105 33, 140
Rear
Sides
Flue
in.
(mm)
in.
(mm)
in.
(mm)
6
(150)
0
0
9
(230)
6
(150)
0
0
9
(230)
6
(150)
0
0
9
(230)
Floor Combustibles
Boiler model VR1 22, 91 27, 105 33, 140
Rear
Sides
Flue
Top
in.
(mm)
in.
(mm)
in.
(mm)
in.
(mm)
6
(150)
0
0
9
(230)
6
(150)
6
(150)
0
0
9
(230)
6
(150)
6
(150)
0
0
9
(230)
6
(150)
Floor Combustibles
Alcove installation
*1 Clearance of 24” (610 mm) required . for burner service.
Recommended Minimum Clearances for Service
Legend
A Boiler
*1 Minimum access for cleaning and service.