Rendamax R3456 EVO, Manual, Page: 23 / 72

Norms and regulations
Noise protection
Antifreeze
Noise protection
The gas condensing boiler R3456
EVO is equipped with a patented
premix burner. The noise level of this
very quiet premix burner is extremely
low in comparison to conventional gas
burners. Therefore no further
measures have to be taken for noise
protection in the boiler room.
Antifreeze
The R3456 EVO can be used with the
antifreeze type Shell Antifreeze
Concentrate. The concentration of the
antifreeze in the system affects the
maximum capacity the boiler can work
on. The relation between antifreeze
concentration and capacity reduction of
the boiler can be found in the graph.
The maximum percentage of antifreeze
should not exceed 30%.
The R3456 EVO is supplied with
adjustable wheels, which also prevent
the transmission of vibration noise from
the boiler into the building.
Once the boiler is in the correct
position, turn anti-clockwise the
regulator (A) or the nut (B) to let the
feet out, till the boiler is set in the right
height.
Noise created by system components
(e.g. pumps) should be taken care of
with external measurements, in case of
higher noise level requirements.
0
2
4
6
8
10
12
14
16
10 15 20 25 30 35
L
e
is
tu
n
g
s
re
d
u
z
ie
ru
n
g
[
%
]
Frostschutzm ittel [%]
Antifreeze [%]
Cap
a
ci
ty
re
d
uc
tio
n
[
%
]
22