34
Service info
The boiler is fitted with an anti-freeze system
which is automatically activated when the tem-
perature of the boiler water drops below 6°C:
the burner is automatically switched on and
the pump started until the temperature of the
water in the boiler reaches 16°C.
3.3
ANTI FROST
PROTECTION
B
C
A similar function prevent an external D.H.W.
tank from freezing when in conjunction with a
IVEN RTN-CTN if the C knob is positioned
on .
WARNING!
This anti-freezing protection
does not work when the boiler
is disconnected from the electri-
cal supply and/or the gas is clo-
sed.
This system protects the boiler and the even-
tual DHW tank from the freezing, but it does
not protect the C.H. and sanitary circuits.
Moreover special anti-freeze products suita-
ble for the multimetal installations can effecti-
vely protect the heating system from the free-
ze.
Do not use the anti-freeze products for car's
engines because they can damage the wa-
ter sealing gaskets.
The anti-freeze protection system, which is
above described, can not work when, for any
reasons, there is no electricity or gas supply.
When the temperature detected by the hea-
ting sensor is under 2 °C, the boiler's opera-
tion is automatically inhibited until the tempe-
rature raises again to 5 °C.
To ascertain that the heat exchanger is not
frozen, open the warm water taps. When you
get water (cold too), you can suppose that the
exchanger is not frozen. On the contrary, when
you get no water, the exchanger is frozen. In
that case it is necessary to apply to a service
technician which. will work to thaw the heat
exchanger using a hair dryer.
3.4
IMPORTANT
SUGGESTION
AND NOTES
The boiler must be serviced once a year by
qualified personnel.
Correct maintenance allows the boiler to work
optimally, respecting the environment and
without endangering people, animals and pro-
perty.
Only qualified and technical personnel can
make adjustment onto the gas valve.
No-one, including qualified personnel, is
authorized to make modifications to the
boiler.
Check regularly the pressure of the boiler wa-
ter through the pressure gauge fitted onto the
panel board, and restore it, if necessary.
If some fault appears during the operation, the
boiler is automatically put in lockout position
and the red warning lamp (G) lights. In this
case proceed as follows:
- Ascertain that the gas cock is open and that
there is gas in the gas pipe (try to ignite a gas
cooker)
- If so, wait one minute before resetting the
boiler by depressing the L push button. If the
boiler does not start and goes into lockout
position after three times, ask for a service or
for a qualified technician.
If the boiler goes into lockout position frequen-
tly, indication of a repeatetive fault in the ope-
ration, ask for a service or for a qualified te-
chnician
WARNING
In case an open flue boiler (TN) the burner
lockout can be due to the intervention of the
smoke thermostat (antispillage thermostat). In
this case to restart the boiler it is necessary
to depress the reset push button L.
This fault, if repeated in the time, means of a
bad chimney operation. Ask a qualified tech-
nician for a check.
If the boiler remains inactive and disconnected
from the power supply for long periods it may
be necessary to unlock the pump.
This operation, which entails disassembling
the outside casing and working on internal
parts of the boiler, must be performed by qua-
lified personnel.
It is possible to prevent the pump from
blocking by adding special filming products
suitable for multi-metal systems to the water.
If the boiler is not disconnected from the mains
power supply the pump will not block becau-
se the boiler’s PCB has an anti-jamming pro-
gramme. In this case the pump goes into ope-
ration for a 5 seconds after 24 hour of inactivi-
ty.
The boiler has a temperature and pressure
gauge which allows you to check the tempe-
rature and pressure of the water in the heating
system.
The pressure of the water must be around 1
bar when the C.H. system is cold.
If this value drops then use the filling cock to
adjust to the correct value.
WARNING
The anti-frost protection is ope-
rational only if the boiler is con-
WARNING
After adjusting the pressure, clo-
se the tap without over-tightening
it. If the tap is not closed properly the pressu-
re could rise, resulting in the safety valve ope-
ning and the water leaking.
nected to the mains supply and the gas cock
is open
Information for the user
The user can access only the parts of the boiler
which can be reached without the need for to-
ols and/or implements: it is therefore forbid-
den to disassemble the outer casing of the
boiler and tamper with the interior parts.
Summary of Contents for IVEN 04 RTN 24
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