Safety Test - With Gas Ball Valve Closed; Safety Components - Riello RS 70 VA Installation, Use And Maintenance Instructions

Safety component
Flame control
Flame sensor
Gas valves (solenoid)
Pressure switches
Pressure adjuster
Servomotor (electronic cam) (if
present)
Oil valve (solenoid) (if present)
Oil regulator (if present)
Oil pipes/ couplings (metallic)
(if present)
Flexible hoses (if present)
Fan impeller
(A)
Life cycle
10 years or 250,000
operation cycles
10 years or 250,000
operation cycles
10 years or 250,000
operation cycles
10 years or 250,000
operation cycles
15 years
10 years or 250,000
operation cycles
10 years or 250,000
operation cycles
10 years or 250,000
operation cycles
10 years
5 years or 30,000 pressurised cycles
10 years or 500,000 start-ups
SAFETY TEST - WITH GAS BALL VALVE
CLOSED
It is fundamental to ensure the correct execution
of the electrical connections between the gas so-
lenoid valves and the burner to perform safely
the commissioning.
For this purpose, after checking that the connec-
tions have been carried out in accordance with
the burner's electrical diagrams, an ignition cycle
with closed gas ball valve -dry test- must be per-
formed.
1
2
3
4
The start-up cycle must be as follows:
–
–
–
–
–
–
Since the manual gas ball valve is closed, the
burner will not light up and its control box will go
to a safety lockout condition.
The actual electrical supply of the solenoid gas
valves can be verified by inserting a tester.
Some valves are equipped with light signals (or
close/open position indicator) that turn on at the
same time as their power supply.

SAFETY COMPONENTS

The safety components must be replaced at the
end of their life cycle indicated in Tab. (A). The
specified life cycles do not refer to the warranty
terms indicated in the delivery or payment con-
ditions.
22
The manual ball gas valve must be closed
The electrical contacts of the burner limit
switch need to be closed
Ensures closed the contact of the low gas
pressure switch
Make a trial for burner ignition
Starting the fan for pre-ventilation
Performing the gas valve seal control, if pro-
vided
Completion of pre-ventilation
Arrival of the ignition point
Power supply of the ignition transformer
Electrical Supply of solenoid gas valves
IF THE ELECTRICAL SUPPLY OF
THE GAS VALVES OCCURS AT
UNEXPECTED TIMES, DO NOT
OPEN MANUAL GAS
VALVE, SWITCH OFF POWER
LINE; CHECK THE WIRES; COR-
RECT THE ERRORS AND REPEAT
THE COMPLETE TEST.
BALL