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16
Installation
4.3 Fuel
The boiler may only be operated with
the fuel designated on the boiler’s rat-
ing plate.
The UltraOil
®
heating boilers are suitable for firing
with the following fuels:
• Heating oil EL low-sulphur in accordance with
DIN 51 603 / ÖNorm C 1109
• Eco heating oil low-sulphur SN 181 160-2 / 2008
If an existing oil heating installation is replaced by
Hoval UltraOil
®
, the following instructions regarding
the oil tank and its refilling must be observed:
• Hoval UltraOil
®
must only be operated with heat-
ing oil EL low-sulphur with sulphur content < 50
ppm (< 0,005 %).
• It is recommended to clean the oil tank before
refilling it.
• A residual amount of heating oil EL in the oil tank
may be mixed with heating oil EL low-sulphur,
provided that the residual amount does not
exceed the following values of the total content.
Residual amount heating oil EL
(sulphur content: 2000 ppm resp. 0,2 %)
max 3 % of tank volume
Residual amount heating oil EL
(sulphur content: 1000 ppm resp. 0,1 %)
max 5 % of tank volume
Residual amount eco heating oil EL
(sulphur content: 500 ppm resp. 0,05 %)
max 10 % of tank volume
• In order to reach the permissible mixture ratio
with heating oil EL low-sulphur taking account of
the residual amount of heating oil in the oil tank, a
100% tank filling is necessary.
Natural gas (conversion option to UltraGas
®
)
Note:
The data contained in the following diagrams repre-
sent guide values calculated at maximum output. An
exact calculation for the flue gas duct must be made
on-site.
Hoval UltraOil
®
(50)
Maximum horizontal length of the connecting line (m)
Maxim
um eff
ectiv
e height, flue gas conduit (m)
0
5
10
15
20
25
30
35
40
0
1
2
3
4
5
6
1
1
room air
dependent
∅
100 mm,
Flue pipe horizontal
∅
100 mm
0
5
10
15
20
25
30
35
40
0
1
2
3
4
5
Horizontale Abgasleitungslänge (m)
2
1
Maximal height in the pipe (m)
Horizontal flue gas pipe length (m)
1
room air
independent
Combustion air duct separately
∅
130 mm,
Flue pipe vertical
∅
130 mm,
Flue pipe horizontal
∅
130 mm
2
room air
dependent
∅
130 mm,
Flue pipe horizontal
∅
100 mm,
