10
GENERAL INFORMATION
DESCRIPTION
TAU Unit
50
TAU Unit
70
TAU Unit
100
TAU Unit
115
Maximum working pressure
5
bar
Minimum supply pressure
1
bar
Maximum permitted temperature
110
°C
Lockout thermostat activation temperature
110
°C
Adjustment temperature (min / max)
30/80
°C
Thermal module water content
91
99
130
130
I
Maximum condensation at 100% rated heat output (40-30°C)
8
11
14
15
l/h
Power supply
230-50
V-Hz
Index of protection
X0D
IP
Consumption at full load
Elmax
100
150
230
230
W
Consumption at part load
Elmin
40
50
60
60
W
Electrical consumption in standby mode
Psb
18
W
1.8
Circulation pump sizing
This
TAU Unit
boiler comes without a pump. A pump must therefore be provided as part of the installation.
In order to choose a pump of the right size, bear in mind the boiler’s water-side pressure drop, as shown in the figure below.
Water-side pressure drop
Pressure drop (mbar)
300
200
100
350
250
150
50
0
0
4
6
8
10
2
12
14
16
18
20
22
50
75
25
0
0
2
3
4
5
1
6
7
8
TAU Unit 50
TAU Unit 50
TAU Unit 70
TAU Unit 100
TAU Unit 115
TAU Unit 70
TAU Unit 100
TAU Unit 115
Flow-rate (m
3
/h)
9
At the first start-up, and at least once a year, the rotation
of the circulator shaft should be checked as, especially after
long periods of not being operated, deposits and/or residu-
als could impede its free rotation.
9
Before loosening or removing the circulator cap, protect the
electric devices located underneath from any water that ex-
its.
0
It is prohibited to operate the circulators without water.
