A
B
B
45°
A
Lifting eyes
(fasten before lifting)
B
Lifting eyes (heat exchanger)
Boiler room requirements
A separate dry boiler room must be provided for the system. No
combustible materials may be stored in the boiler room.
The minimum clearances to the walls and ceiling required for clean-
ing and maintenance must be observed. These can be found on the
dimensions sheet. Adequate fresh air supply must be ensured direct
from the open air into the boiler room. Forced ventilation is required
in the case of narrow and/or internal boiler rooms. The temperature
in the boiler room when operating the system must not exceed
+40 °C (point of capture: Approx. 1 m from the boiler). The tempera-
ture in the boiler room when operating the system must not fall
below +10 °C (point of capture: Inside of exterior wall).
■ Avoid air contamination by halogenated hydrocarbons (e.g. as
contained in sprays, paints, solvents and cleaning agents)
For rooms where air contamination through
halogenated hydro-
carbons
is expected:
Boilers and flue gas/water heat exchangers may only be installed if
adequate measures are taken to provide a supply of uncontamina-
ted combustion air.
■ Prevent very dusty conditions
■ Prevent high levels of humidity
■ Prevent frost and ensure good ventilation
Note
If these instructions are not observed, any consequential losses
directly related to any of these causes are excluded from our war-
ranty.
If in doubt, consult Viessmann on this matter.
Boiler room floor requirements
The solid fuel boiler may only be installed on a fire- and temperature-
resistant floor. No temperature-sensitive pipes or lines may be
routed through the floor underneath the boiler.
The load bearing capacity of the boiler room floor must be designed
for the system weight plus that of the water and the fuel it will con-
tain. Floor load bearing capacity in the area of the boiler supporting
surface: 2000 kg/m².
Design information
(cont.)
VITOFLEX 300-UF
Viesmann
85
5682428
9
