Rima ONGAS MEGA 05, Руководство по установке

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the operation and maintenance procedures that shall be performed by the user. Other than these
operations, the user or any person without the expertise shall not temper with any part or the settings
of the boiler for reasons such as operating or maintaining, etc.
During the annual use of the boilers, particulate contamination may occur on the fresh air suction line,
on the surface of the fins and on the condensate container and siphon as a result of combustion of the
natural gas. Moreover, parts such as the return filter shall be inspected at least once (1) a year and shall
only be cleaned by the authorized service.
Consider the following issues during the annual inspection of the boilers:

inspection of the boiler’s combustion system (fan, venturi and burner)

inspection of the ignition electrode

inspection of leaks (water, gas and flue gas)

inspection of water pressure

inspection of sections such as siphon and heat exchanger
Disconnect the main line, turn off the main gas valve and allow the boiler to cool before starting to
work on the boiler.
When the body shall be replaced, the red securing bolt shall be removed and the body shall be lifted
up. Then, the body shall be separated from the rear metal sheet. The new body shall be installed with
the same procedure.
7.1.Inspection of the Combustion System
It shall be inspected by operations such as the
measurement of the O
2
/CO
2
ratio from the measurement
test point at the flue gas outlet with an analyzer. The boiler
shall be operated at a temperature of about 70°C for this
purpose. The measurements shall match the values for the
gas ratio adjustment. And the flue gas temperature may be
measured at the test nipple measuring point in the flue. If
the flue gas temperature exceeds the return water
temperature by more than 30°C, this may indicate that the
heat exchanger is contaminated. It shall always be
inspected and cleaned properly.