Immergas EOLO Maior - Circulation Pump and Boiler Components

TECHNICIAN
INSTALLER
USER
17
no gas transfer must be detected by the meter;
- ensure that the type of gas used corresponds to
boiler settings;
- switch on the boiler and ensure correct ignition;
- ensure that the gas flow rate and pressure values
correspond to manual specifications (see page 30-
31);
- ensure that the safety device is engaged in the
event of gas supply failure and check activation
time;
- check activation of the main circuit-breaker switch
upstream of the boiler and on the unit;
- check that the concentric intake/exhaust terminal
(if fitted) is not blocked.
The boiler must not be started up in the event of fail-
ure to comply with any of the above.
Preliminary boiler testing must be performed by quali-
fied personnel (e.g. free of charge by an Authorised
Immergas Service Centre). The boiler guarantee is
valid as of the date of testing.
System pump head Eolo 21 Maior @.
Head in mmw.g.
A
B
Flow rate Litres/h
C
D
The test certificate and guarantee is issued to the
user on completion.
1.11 Circulation pump.
Eolo Maior @ boilers are supplied with a built-in cir-
culation pump with 3-position electric speed control.
If the circulating pump is adjusted on the first speed,
the boiler doesn’t operate correctly.
To ensure optimal boiler operation, in the case of
new systems (single pipe and modul) use the circu-
lation pump at maximum speed (third setting). The
circulation pump is already fitted with a capacitor.
Pump release (when required). After a prolonged
period of disuse, if the pump is blocked, loosen the
front cap and rotate the motor using a screwdriver.
Take great care during this operation to avoid dam-
age to the motor.
A = Head available on third speed
setting
B = Head available on second
speed setting
C = Head available on third speed
setting with by-pass inserted
D = Head available on second
speed setting with by-pass
inserted