- 5 -
COMMISSIONING
2 - FILLING THE INSTALLATION WITH WATER
- The installation will have to be rinsed before the
boiler is filled with water.
- To ensure proper boiler bleeding during the ins-
tallation’s filling stage:
• Filling the DHW tank for the THI 10-50 C mo-
dels + DHW production system:
. Fill the tank with water by using the safety
control box of the installation, taking care to
open a hot water tap,
. After filling, check that the tank access flap
is tightened correctly.
• Filling the installation :
. Open the heating flow/return isolation val-
ves,
. Open the cold water inlet valve,
. Fill the installation slowly (to make degas-
sing easier) by using the valve of the filling
system,
. check the leaktightness of the circuit,
. Bleed the entire installation, particularly the
radiators. Continue to fill the system until a
pressure of approximately 1.5 bar is rea-
ched,
To read the pressure:
1) Switch on the boiler
2) Press the info key twice
3) The value of the pressure is shown on the
display
. turn off the filling valve.
3 - GAS SUPPLY
- Open the gas cock (item. 2, fig. 43 to fig. 45 -
page 41 to page 42- chapter IV - INSTALLATION
- SERVICING MANUAL).
- Carefully bleed the gas piping. If the installation is
new, the bleed evacuates the air that is contained
in the piping so that the boiler has an adequate
fuel.
The presence of air in the gas prevents the igni-
tion of the burner and leads to safety shut-down
by the flame monitoring unit.
This is the case both with a natural gas and a
LPG new installation. With a LPG installation the
storage tank must also be bled properly before
commissioning.
The external discharge of the gas
bleed must be carried out with all ne-
cessary safety measures.
- Check the tightness of the connectors and the air-
tightness of the gas circuit using a foaming pro-
duct or a water column pressure gauge.
4 - FLOW RATE OF THE SEP VERSION
THI 10-35 SEP is equipped with a flow limiter to pro- vide 16 l/min at 2.5 bars.
5 - SETTING THE MAXIMUM POWER IN HEATING MODE
The maximum power of the boiler in heating mode
can be limited. This operation requires modification
of the PHz parameter in the boiler's LMU manage-
ment unit.
Access to the PHz parameter is possible via the
QAA 73 ambient temperature sensor (line 541).
The PHz value should be selected by following the
diagram below. Adapting the boiler's maximum hea-
ting power to the maximum power of the installation
helps avoid heavy loads during reheating phases
and thus reduces the maximum sound output of the
boiler.
!
THi 10-50 heat input depending on PHzMax setting (parameter 541 QAA73)
10
15
20
25
30
35
40
45
50
10 20 30 40 50 60 70
PHzMax %
Heat input kW
THRi10-50 PHz ,,
Fig. 1
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