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POSITIONING THE TEMPERATURE SENSORS
SENSORS INSERTED IN THEIR
SOCKETS IN THE BOILER:
- Flue gas temperature sensor (1)
- Safety thermostat temperature sensor (2)
- CH flow temperature sensor (3)
- CH return temperature sensor (4)
- Flue gas thermostat (5)
b
IMPORTANT:
LEAVE THE SENSORS IN THEIR ORIGINAL POSITIONS EVEN IF THE BOILER IS CONFIGURED FOR USE
IN A CASCADED SYSTEM.
PUMPS
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
b
On initial start-up and at least every year, check that
all the pumps in the system rotate freely. Sludge and
lime scale can build up and cause seizure, especially
after long periods of disuse.
12
GENERAL
4
5
40
35
30
25
20
15
10
5
0
0
1
2
Front view
TAU 55 UNIT
TAU 75 UNIT
TAU 110 UNIT
3
4
5
6
FLOW-RATE (m /h)
b
Protect all electrical devices under the pump before
you unscrew the inspection cap just in case water
comes out.
a
Never run the pump dry.
3
2
Rear view
7
8
1
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