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Technical information
Fuel
Heating oil EL
Natural gas H
Option 1
Option 2
Option 3
Option 1
Option 2
Option 3
min. flue gas temperature
°C
130
110
130
130
110
130
min. boiler temperature
°C
48
50
52
58
60
62
min. return temperature
°C
35
38
No lower limit
45
48
No lower limit
Return temperature controls
yes
yes
no
yes
yes
no
Boiler start-up protection
1
no
no
yes
no
no
yes
1
Boiler minimum temperature limit effective on group actuators
Type
(95)
(110)
• Nominal heat output at 80/60 °C
1
kW
95
110
• Thermal output
kW
60-95
70-110
• Maximum heat input
kW
102.1
118.3
• Maximum boiler operating temperature
2
°C
90
90
• Safety temperature limiter setting (water side)
2
°C
110
110
• Operating/test pressure at max. operating temperature 90 °C
2
bar
4.0/5.2
4.0/5.2
• Maximum boiler operating temperature
3
°C
105
105
• Safety temperature limiter setting (water side)
3
°C
120
120
• Operating pressure at max. operating temperature 105 °C
3
bar
3.0
3.0
• Minimum boiler operating temperature
°C
see table of operating conditions (below)
• Minimum boiler return temperature
°C
see table of operating conditions (below)
• Minimum flue gas temperature at boiler
°C
see table of operating conditions (below)
• Regulator set for 160 °C
3R5+
3R5+
Flue gas temperature
1R2/290
2R3/290
• Boiler efficiency at full load and 80/60 °C
(related to net/ gross calorific value, heating oil EL)
%
92.6 / 87.4
92.7 / 89.5
• Boiler efficiency at partial load 30% and return 37 °C
(acc. to EN 303) (related to lower/upper calorific value heating oil EL)
%
94.8 / 89.4
94.8 / 89.5
• Standard efficiency at 75/60 °C (DIN 4702 Part 8)
(related to net/gross calorific value, (heating oil EL))
%
95.7 / 90.3
95.9 / 90.47
• Standby losses qB at 70 °C
Watts
400
400
• Resistance on the heating gas side at nominal output
160 °C flue gas temperature, 12.5 % CO
2
, 500 m above sea level
(tolerance ±20 %)
mbar
0.65
0.89
• Flue gas mass flow at nominal output 12.5 % CO
2
heating oil
kg/h
162
188
• Flow resistance boiler
4
z-value
0.2
0.2
• Hydraulic resistance at 10K
mbar
13.35
17.90
• Hydraulic resistance at 20K
mbar
3.34
4.47
• Water flow rate at 10K
m³/h
8.17
9.46
• Water flow rate at 20K
m³/h
4.09
4.73
• Boiler water content
litres
250
250
• Boiler gas content
m³
0.1848
0.1848
• Insulation thickness of boiler body
mm
80
80
• Weight (incl. casing)
kg
391
391
• Sound level
5
- Heating noise without absorber hood (EN 15036 Part 1)
dB(A)
77
79
- Heating noise with absorber hood (EN 15036 Part 1)
dB(A)
67
67
- Flue gas noise inside the flue (EN 15036 Part 2)
dB(A)
87
91
- Flue gas noise radiated from the mouth (DIN 45635 Part 47)
dB(A)
79
84
• Combustion chamber dimensions Ø-inside x length
mm
ø440x974
ø440x974
• Combustion chamber volume
m³
0.148
0.148
• Dimensions
see Dimensions
• Maximum depression in flue gas system (boiler connection)
Pa
30
30
1
At nominal output, the pollutant limit values and flue gas losses as per regulation LRV 92 (CH) are complied with.
2
Controller U3.1 and T2.2
3
Controller U3.2 and T0.2
4
Flow resistance boiler in mbar = flow rate (m
3
/h)
2
x z
5
Data valid for Hoval oil compact heat station b-i
3.2 Technical data Uno-3 (95-110) for Switzerland
Possible operating conditions
