Immergas EOLO STAR 24 5E, Инструкция по эксплуатации

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17
A
B
1-27
C
D
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
Head available to the system.
A = Head available to the system at maximum
speed with by-pass excluded.
B = Head available to the system at maximum
speed with by-pass inserted.
C = Head available to the system at second
speed with by-pass excluded.
D = Head available to the system at second
speed with by-pass inserted.
H
ea
d (m H
2
O)
Flow rate (l/h)
H
ea
d (kP
a)
1.22 CIRCULATION PUMP.
The Eolo Star 24 5 E series boilers are supplied
with a built-in circulation pump with three-
position electric speed control. The boiler does
not operate correctly with the circulation pump
on first speed. To ensure optimal boiler opera-
tion, in the case of new systems (single pipe and
module) it is recommended to use the pump
at maximum speed. The circulation pump is
already fitted with a condenser.
Pump release. If, after a prolonged period of
inactivity, the circulation pump is blocked,
unscrew the front cap and turn the motor shaft
using a screwdriver. Take great care during this
operation to avoid damage to the motor.
By-pass adjustment (part.23 Fig. 1-28).
If ne-
cessary, the by-pass can be adjusted according to
system requirements from a minimum (by-pass
excluded) to a maximum (by-pass inserted)
represented by the graph (Fig. 1-27). Make the
adjustment using a flat head screwdriver, turn
clockwise and insert the by-pass; by turning it
anti-clockwise it is excluded.
1.23 KITS AVAILABLE ON REQUEST.
• Connection unit kit (on request). The kit in-
cludes pipes, fittings and cocks (including gas
cock), to carry out all connections to the boiler
system
• System cut-off valve kits with or without in-
spectionable filter (on request) The boiler is
designed for installation of system interception
cocks to be placed on flow and return pipes
of the connection assembly. This kit is very
useful for maintenance because it allows to
empty just the boiler without having to empty
the entire system. Moreover, the version with
filter preserves the functioning characteristics
of the boiler thanks to its inspectionable filter.
• Polyphosphate dispenser kit (on request). The
polyphosphate dispenser reduces the formation
of lime-scale and preserves the original heat
exchange and domestic hot water production
conditions. The boiler is prepared for applica-
tion of the polyphosphate dispenser kit.
• Covering kit. In the case of installation with direct
intake and open sky installation it is mandatory
to mount the relevant top cover protection for
correct functioning of the boiler and to protect
it from weather.
• Anti freeze kit with resistance (on request). If
the boiler is installed in a place where the tem-
perature falls below -5°C and in the event there
is no gas, the appliance can freeze. To prevent
freezing of the domestic hot water system, an
anti freeze kit with an electrical resistance can
be fitted from the relative cable and from a
control thermostat.
The above-mentioned kits are supplied complete
with instructions for assembly and use.