9
GENERAL
MODELS
TAU 35 UNIT
Device type
condensing boiler
for central heating
C13-C33-C43-C53
Fuel
G20-G31
Device category
II 2H3P
Maximum rated heat input at furnace referred to HVC (LCV)
38,6 (34,8)
kW
Minimum rated heat input at furnace referred to HVC (LCV)
7,8 (7,0)
kW
Useful (rated) heat output
G20
34
kW
Maximum rated heat output 80-60°C (P4)
G20
34,0
kW
Maximum rated heat output 50-30°C
G20
37,0
kW
30% heat output with return at 30°C (P1)
G20
10,2
kW
Minimum rated heat output 80-60°C
G20
6,7
kW
Efficiency class in central heating mode
A
Seasonal energy efficiency in central heating mode
η
s
91
%
Efficiency at rated heat input in high temperature
mode (HCV)
η
4
Useful Pn
(60-80°C)
88,0
%
Efficiency at 30% rated heat input in low temperature
mode (HCV)
η1
Useful 30%
of Pn
96,9
%
Losses from stack with burner off
0,1
%
Losses from stack with burner on
1,9
%
Heat loss in standby mode
Pstby
34
W
Annual energy consumption
QHE
107
GJ
Noise level (sound power)
LWA
Max
51
dB(A)
LWA
Min
43
dB(A)
Emissions NO
x
NO
x
(referred to HCV)
29
mg/kWh
Emissions at max./min. heat input, G20
CO
2
9,15
%
CO
5-10
ppm
Flue gas T.
71-55
°C
Emissions at max./min. heat input, G25
CO
2
(referred to HCV)
9,2-9,15
%
CO
4-10
ppm
Flue gas T.
59-55
°C
Pressure in combustion chamber
1
mbar
Flue gas mass flow rate
0,016
Kg/s
Water-side pressure drop (
∆
t 10°C)
50
mbar
Maximum working pressure
3
bar
Minimum supply pressure
0,5
bar
Safety thermostat trip temperature
100
°C
Maximum operating temperature
100
°C
Boiler water capacity
56
l
Volume of expansion vessel (CH)
12
l
Maximum condensation at 100% rated heat output (40-30°C)
4,5
l/h
Power supply
230-50
V-Hz
Electric degree of protection
X0D
IP
Absorbed power supply (max)
153
W
Consumption at full load
Elmax
100
W
Consumption at part load
Elmin
30
W
Consumption in standby mode PSB
P sb
15
W
1 .8
Technical specifications
