Safety and Installation Requirements
Please ensure that these instructions are read and understood before commencing installation. Failure to comply
with the
instructions listed below can cause
product/property damage
,
severe personal injury
, and/or
loss of life
.
Working on the equipment
The installation, adjustment, service,
and maintenance of this product must
be done by a
licensed professional
heating contractor
who is qualified and
experienced in the installation, service,
and maintenance of hot water boilers.
There are no user serviceable parts on
the boiler, burner, or control.
Ensure
main power
supply to
equipment, the heating system, and all
external controls has been
deactivated
.
Close main oil supply valve
. Take
precautions in both instances to avoid
accidental activation of power during
service work.
Ensure that the installation
literature of other applicable
components is referenced.
General Information
Standard installation
Boiler
Model
VR1
-22
-27
-33
Rear
Sides
Flue
inches
mm
inches
mm
inches
mm
6
150
0
0
1
25
6
150
0
0
1
25
6
150
0
0
1
25
Floor
Combustibles
Alcove installation
Boiler
Model
VR1
-22
-27
-33
Rear
Sides
Flue
Top*
inches
mm
inches
mm
inches
mm
inches
mm
6
150
0
0
1
25
6
150
6
150
0
0
1
25
6
150
6
150
0
0
1
25
6
150
Floor
Combustibles
* 24” with Vitotronic control.
The insulated oil direct vent system is
rated for a 1” clearance to
combustibles.
Advise owner to keep direct vent
termination and air intake free of
debris, snow and ice.
NOTE: Surface discoloration on the
outside of the building may occur if the
burner is not properly adjusted.
Viessmann will not accept any
responsibility for such discoloration.
NOTE: Direct Vent exhaust system
operates under a positive pressure
developed by the burner. Make sure all
vent connections and observation port
on the boiler are sealed air-tight by
tightening screws and using high
temperature silicone sealant if
necessary.
NOTE: The vent components must be
supplied without any alteration except
for the length of the flex pipe to be cut
to the desired length.
P
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5351 050 v2.5 09/2012
Installation Instructions
Supplement
for use by heating contractor
Direct Vent Systems
,
Part No. Z005 875 (FDVS-4)
for Vitorond 100 boilers
IMPORTANT
Viessmann will not assume any
responsibility for possible effects of
an obstructed air intake or exhaust
termination.
WARNING
