- 53 -
COMMISSIONING
2 - FILLING THE INSTALLATION WITH WATER
- The installation will have to be rinsed before the
boiler is filled with water. Installation decantation
should be provided for.
- To ensure proper boiler bleeding during the ins-
tallation’s filling stage:
• Filling the DHW tank for the THI C+ BS
system
:
. Fill the tank with water by using the safety
control box of the installation (rep. 18, fig. 52
to fig. 53), taking care to open a hot water
tap,
. After filling, check that the tank access flap
is tightened correctly.
• Filling the installation for all models:
. 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.
. turn off the filling valve.
3 - PRESSURE SENSOR
The pressure sensor features a small window that
displays the pressure status of the system without
any mains supply.
4 - GAS SUPPLY
- Open the gas cock (2, fig. 48 to fig. 53, IV - INS-
- 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
GPL new installation. With a GPL 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.
Coulours
Pressure ranges
Yellow
0 to 0,5 bar
Green
0,5 to 2,5 bar
Red
2,5 to 3,6 bar
AST
-4
5-0
Fig. 57
Pressure too low = yellow
Pressure correct = green
Pressure too high = red
!
Содержание THI 5-25c
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Страница 65: ... 98 NOMENCLATURE CONTROL BOX ...