Condensate Pipe And Traps - Biasi ADVANCE OV Series User Manual And Installation Instructions

• Check the operation of the pressure relief
valve (sealed system only) (Fig. 7.2) by
lifting the lever or turning the knob on the
valve gently to ease the valve of its seat.
• Checking that water is discharged, re-
lease the lever and ensure that the valve
seats correctly and does not leak. Where
this is not possible a manual check should
be carried out.
• Release the cold water to the initial design
pressure.
Pressure gauge capillary
Pressure gauge
Fig. 7.2
NOTE: THESE COMPONENTS ARE NOT
SUPPLIED BY BIASI UK LTD.
Do not use the pressure relief
valve to drain the system, be-
cause dirt or debris could pre-
vent the valve seating correctly.
If the valve leaks or sticks
closed, then replace it.
• Close all air release valves on the C.H.
system.
• Inspect the boiler and the system for wa-
ter tightness and remedy any leaks dis-
covered.
• Cold flush the system to remove any
loose particles and any system debris be-
fore starting the boiler for the first time
The flushing procedure must be in line
with BS7593:2006 Treatment of Water in
D.H.W. & C.H. Systems.
COMMISSIONING
Pressure relief lever
When the installation and second fill-
ing are completed turn on the C.H. sys-
tem and run it until the temperature has
reached the boiler operating tempera-
ture. The system must then be immedi-
ately flushed through.
This procedure must be repeated twice
more.
During this operation a C.H. flushing de-
tergent must be used in the quantities
as specified by the appropriate manu-
facturer, whose function it is to dissolve
any foreign matter which may be in the
system.
INHIBITION (Primary Heating Circuit)
On the final refilling of the heating system it
is important to ensure the system water is
treated with a suitable scale and corrosion
inhibitor in accordance with the manufactur-
ers instructions.
Only inhibitors that carry the Buildcert
approved label should be used.
7.5

Condensate pipe and traps

The full length of the condensate pipe
should be checked 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
pouring a cupful of water into
the flue outlet (Fig. 7.3).
Warning do not allow water to
enter the outer air intake
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