Condensate Pipe And Traps; Checking The Gas Supply Pressure; Checking The Inlet Pressure - Biasi Inovia 25S ERP User Manual And Installation Instructions

• Open the gas cock
• Make sure that the ambient thermostat is in
the "heat request" position".
• Check the correct functioning of the boiler
both in domestic hot water mode and in
heating mode.
• Check the gas pressures and flow rates as
shown in section "GAS CONVERSION" to
page 67 of this booklet.
• Check that the condensate produced dur-
ing functioning fills the pipe and is regularly
drained in the draining plant pipe.
• Switch off the boiler by pressing the 12 (Fig.
7.5) key for 2 seconds until the
symbol appears on the LCD display (Fig.
7.4).
7.5

Condensate pipe and traps

The full length of the condensate pipe should
be check for leaks.
Before running the boiler, ensure that the built
in condensate trap and any other trap in the
drain system is correctly filled with water.
Fill the built in condensate trap by
removing the flue elbow and pour-
ing a cupful of water into the flue
outlet (Fig. 7.7).
Fig. 7.7
An alternative, to the removal of the flue el-
bow, pour the water through the flue sampling
point (Fig. 7.8).
COMMISSIONING
Fig. 7.8
7.6
This boiler has been factory tested to the
highest quality control standards and set
for the minimum and maximum gas work-
ing pressures, connected to a 1 m flue and
a gas supply pressure of 20 mbar.
Any variation in gas supply pressure or
flue length may result in the customer ex-
periencing a harmonic noise from the boil-
er. In these circumstances, it may be nec-
essary to reset the burner gas pressures
in accordance with section 11 Gas Valve of
the Service Manual.
It should be noted that a Flue Gas Analyser
is required for this procedure.
7.7
• Remove the boiler body's front panel, see
section "Dismantling the external panels" to
page 70.
• When the boiler is switched off (out of or-
der), check the supply pressure by using the
32 point in Fig. 7.9 and compare the value
read with that reported on the Gas supply
pressure table in the "Technical Data" sec-
tion (pag. 28 Inovia 25S ERP.
• Close well the pressure point 32 in Fig. 7.9.
Sampling points
Flue exhaust
Checking the gas supply pres-
sure

Checking the inlet pressure

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