Biasi Riva ADVANCE SV, Owner'S Manual

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12 RIVA ADVANCE USER MANUAL
5. Instructions For Use
5.1 Warnings:
• In order to guaranty safety and correct operation, it is essential that all the tests are carried
out by a competent and responsible licensed service person before lighting up the boiler.
• The tests are described in the installation, operation and service instructions manual in Sec-
tion 15 Commissioning.
• Ensure that the Central Heating circuit is regularly filled with water checking that the pres-
sure indicated on the pressure gauge (4 on figure 3.2) is not lower than 1 bar (14.5 psi) as
shown on figure 5.1.
• If the pressure reading on the pressure gauge is below 1 bar (14.5 psi), then the system will
require filling. An automatic filling valve is normally provided by the installer for this purpose.
• If you are in any doubt regarding this procedure you are advised to contact your In-
staller or an Approved Service Person.
• This appliance is provided with a built in anti-freeze system that operates the boiler when
the temperature is below 41 °F.
• Therefore, when the boiler is not lit or used in cold weather, with consequent risk of freezing
do not switch off the boiler at the circuit breaker or close the gas inlet cock.
• When you expect not to use the boiler for a long period follow the instructions given in sec-
tion 5.6 on page 15.
5.2 Refilling procedure:
• Isolate the boiler from the electrical sup-
ply at the circuit breaker.
• The boiler should have been installed with
an automatic fill valve, external to the unit.
Open the cold water supply to the auto-
matic fill valve.
• The pressure should be 1 – 1,5 bar (14.5
– 22 psi).
• The automatic fill valve should maintain
this pressure, but not exceed it.
Figure 5.1
Air introduced into the boiler during this filling process will vent through the automatic air purger
fitted to the boiler. You may also find it necessary to vent air from your heating circuit using the
installed vents, however be aware that excessive venting will cause the pressure in the system
to drop. Always ensure that the pressure gauge is set at the required pressure.