29
0
5
10
15
20
25
30
35
40
0
10
20
30
40
50
60
výkon kotle (kW )
d
o
b
a
o
h
ř
e
v
u
(
m
in
)
0
100
200
300
400
500
600
700
0
10
20
30
40
50
60
výkon kotle (kW )
p
r
ů
to
k
v
o
d
y
(
l/
h
o
d
)
Fig. no. 11
OV 100 L water heater characteristics
The stated heating intervals and water flow rates apply in case that in the heating system there is installed
the Grundfos pump and its revolutions switch is in position 3 (corresponds to 650 l/h flow rate.) If the pump
works with lower revolutions (lower flow rate), the time necessary for hot service water heating will be longer.
***) IMPORTANT WARNINGS!
Set the thermostat of the heater to max. 60 °C temperature (note: The regulations in the Czech Republic do
not allow do distribute water of temperatures higher than 60°C).
Once a week set the thermostat of the heater to 65 °C temperature in order to avoid the formation of
legionella (bacillary bacteria originating in water. They die between 60 and 65 °C temperature within several
minutes and at 70 °C temperature they die within several seconds.).
7.2
Heater construction
To the boiler you can order VIADRUS OV 100L separate stack heater for a preferential hot service water
preparation in the same design as G 42 boiler. The reservoir is thermally insulated by using polyurethane
and its internal surface is coated by double enamelled layer which guarantees a long service life. The
operation and installation manual is enclosed to the heater.
The boiler standard electric connection is adjusted to Honeywell V 4044 F three-way valve connection
ensuring the HWS preferential heating. The thermostat is a part of heater.
OV 100 L
OV 100 L
*) For
a
boiler
output
different from 26,5 kW
and
at
the
same
conditions
like
those
stated
in
table
the
heating interval varies as
follows:
**) The water rated flow is
stated at 85 °C heating
water temperature and hot
service water temperature
gradient 35 °C (TUV inlet
temperature 10 °C, TUV
outlet temperature 45 °C).
If for the heater a boiler
with an output different
from 26,5 kW is used, then
the water flow rate at
keeping
the
above
mentioned inlet conditions
varies as follows:
T
im
e
f
o
r
w
a
te
r
h
e
a
te
d
(
m
in
)
Heat output (kW)
Heat output (kW)
W
a
te
r
fl
o
w
r
a
te
(
l/
h
o
u
r)
Summary of Contents for GARDE G 42 ECO
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