Intended Use - Viessmann VITOLIGNO 200-S Technical Manual

Design information
Deduct rooms which are temporarily unheated (guest rooms, public
rooms, weekend accommodation etc.) from the calculated heat load.
Combustion duration T
Fuel
Beech – fully charged
Spruce – fully charged
Beech ½ charge
Spruce ½ charge
Example calculation for sizing a heating water buffer cylinder
Example 1 for a building heat load of 22 kW
Two-family house with a calculated building heat load of Q
22 kW.
Fuel: Spruce (softwood), length 0.5 m, stored for 2 years (residual
moisture = 25 %)
The system should be operated with a Vitoligno 200-S (rated heating
output Q = 30 kW).
N
Sizing basis to EN 303-5:
V = 15 x T x Q x 1 – 0.3 x
cyl. B N
T = 4 h Combustion duration at rated heating output
B
Q = 30 kW Rated heating output of the Vitoligno 200-S, 15 to
N
30 kW
Q = 22 kW Calculated building heat load
H
Q = 13 kW Min. heating output Vitoligno 200-S, 15 to 30 kW
min
Calculated heating water buffer cylinder content:
V = 15 x 4 h x 30 kW x
cyl
6

6.8 Intended use

The appliance is only intended to be installed and operated in sealed
unvented heating systems that comply with EN 12828, with due atten-
tion paid to the associated installation, service and operating instruc-
tions. It is only designed for the heating of water that is of potable water
quality.
Intended usage presupposes that a fixed installation in conjunction
with permissible, system-specific components has been carried out.
Commercial or industrial usage for a purpose other than heating the
building or DHW does not comply with regulations.
VIESMANN
74
(cont.)
subject to type of firewood and charge volume
B
Charge volume in kWh
For the Vitoligno 200-S with rat-
ed heating output
20 kW, 30 kW 40 kW, 50 kW
180 252
120 168
90 126
60 84
Q
H
Q
min
22 kW
1 – 0.3 x = 1008 l
15 kW
Note
According to the 1st BImSchV [Germany], cylinder volumes less than
55 l/kW rated boiler heating output and less than 12 l per litre fuel
hopper should not be selected.
Max. possible combustion duration T
At rated heating output
for the Vitoligno 200-S
with rated heating output
20 kW, 30 kW
5.5
4
2.5
2
Example 2 for a building heat load of 33 kW
Agricultural building with a calculated building heat load of Q
33 kW.
=
Fuel: Beech (hardwood), length 0.5 m, stored for 2 years (residual
H
moisture 25 %)
The system should be operated with a Vitoligno 200-S (rated heating
output Q = 40 kW).
N
Sizing basis to EN 303-5:
V = 15 x T x Q
cyl. B N
T = 5.5 h Combustion duration at rated heating output
B
Q = 40 kW Rated heating output of the Vitoligno 200-S, 20 to
N
40 kW
Q = 33 kW Calculated building heat load
H
Q = 20 kW Min. heating output Vitoligno 200-S, 20 to 40 kW
min
Calculated heating water buffer cylinder content:
V = 15 x 5.5 h x 40 kW x
cyl.
Any usage beyond this must be approved by the manufacturer for the
individual case.
Incorrect usage or operation of the appliance (e.g. the appliance being
opened by the system user) is prohibited and results in an exclusion
of liability. Incorrect usage also occurs if the components in the heating
system are modified from their intended function (e.g. if the flue gas
and ventilation air paths are sealed).
in hours
B
At partial load (50 %)
for the Vitoligno 200-S
with rated heating output
40 kW, 50 kW 20 kW, 30 kW
5.5 11
4 8
2.5 5.5
2 4
Q
H
x 1 – 0.3 x
Q
min
33 kW
1 – 0.3 x
20 kW
VITOLIGNO 200-S
40 kW, 50 kW
11
8
5.5
4
=
H
=1667 l