Sime Super four, Инструкции по установке и обслуживанию

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3
Installation is to be understood as per-
manent and must be carried out exclu-
sively by specialized and qualified firms,
in compliance with all the instructions
and provisions set out in this manual.
2.1 BOILER ROOM
Since the “SUPER FOUR” version boilers
do not exceed the limit of 35 kW, they
may be installed, without any constraints
regarding location or supply of air for
combustion, in any domestic ambience.
2.2 CONNECTING UP SYSTEM
Before proceeding to connecting up the
boiler, you are recommended to get
water to circulate in the piping in order
to eliminate any foreign bodies that
might be detrimental to the operating
efficiency of the appliance. When
making the hydraulic connections, make
sure that the dimensions indicated in
fig. 1 are respected.
The discharge
pipe of the two safety valves (6-7 fig.
13) must be connected to a collector
funnel for channelling away any
discharge in the case of the safety val-
ves going into action.
The gas connec-
tion must be made using seamless
steel tubes (Mannesmann type).
NOTE: To connect the gas cock to the
boiler, undo the union and the washer
(2 fig. 13).
Where the piping has to pass through
walls, a suitable insulating sleeve must
be provided. When sizing gas piping,
from the meter to the boiler, take into
account both the volume flow rates
(consumption) in m
3 /h and the relative
density of the gas in question. The sec-
tions of the piping making up the system
must be such as to guarantee a supply
of gas sufficient to cover the maximum
demand, limiting pressure loss between
the gas meter and any apparatus being
used to not greater than:
– 1.0 mbar for family II gases (natural gas);
– 2.0 mbar for family III gases (L.P.G.).
An adhesive data plate is stuck on the
inside of the panel; it contains all the
technical data identifying the boiler and
the type of gas for which the boiler is
arranged.
2.2.1 Filter on gas pipe
The gas valve used on the “SUPER
FOUR” boilers is fitted standard with an
inlet filter, which, however, is not able to
entrap all the impurities in the gas or in
gas mains pipes. To prevent malfunctio-
ning of the valve, or in certain cases
even cutting out of the safety device
with which the valve is equipped, install
an adequate filter on the gas pipe.
2.3 CHARACTERISTICS
OF FEEDWATER
Where the mains water has a hard-
ness of more than 20-25° Fr, the
feedwater must be suitably softened
both for the domestic water circuit
and for the central heating circuit, so
as to prevent formation of boiler scale
due to lime deposits, since this could
lead to a reduced heat exchange.
It should be remembered that even
small encrustations of just a few milli-
metres thick, on account of their low
thermal conductivity, cause a conside-
rable overheating of the walls of the
boiler with serious consequences.
IT IS ABSOLUTELY ESSENTIAL THAT
THE WATER USED FOR THE CENTRAL
HEATING SYSTEM SHOULD BE TREA-
TED IN THE FOLLOWING CASES:
– very extensive system (with high con-
tents of feedwater);
– frequent addition of makeup water
into the system.
Should it be necessary to empty the
system either partially or totally, the
subsequent refilling should be carried
out using suitably treated water.
NOTE: If the water pressure from the
mains is above 4 bar, a pressure
reducing valve should be fitted.
2.4 SYSTEM FILLING
With the system cold, the charge pres-
sure must be between 1 and 1.2 bar.
During system filling, you are recom-
mended to keep the switching knob tur-
ned OFF. The system should be filled
slowly, so that any air bubbles can be
bled off through the air relief valves.
To facilitate this operation, set the
groove on the release screw of the
non-return valves horizontally.
In the event of the pressure in the
system dropping below 0.6 bar during
operation (owing to elimination of
gases dissolved in the water), the boi-
ler will shut off automatically, and the
red warning light (11 fig. 11) will start
flashing. Bring the water filling pressu-
re to 1-1.2 bar, which can be read on
the hydrometer. Once the correct
pressure has been restored, the war-
ning light will turn off automatically and
the boiler will start operating again.
Should the pressure have risen well
above the limit envisaged, release the
excess pressure by opening the relief
valve on any radiator.
2.5 COAXIAL AIR INLET-FLUE
OUTLET ASSEMBLY
The air inlet-flue outlet assembly is sup-
plied upon demand in a separate kit
(Code 8084802). It includes:
– coaxial duct ø 60/100 L. 840, with
wind-proof (anti-blowback) head already
fixed to the flue discharge duct;
– pipe bend ø 60/100 with fixing
screws;
– fixing clamp;
– rubber ring nut for external closing;
– sponge-rubber gasket.
The aluminium ring nut for internal clo-
sing with locking screws is supplied
separately in the package containing
the boiler.
2.5.1 Assembly of coaxial duct kit
In order to assembly follow closely
what is indicated in fig. 4.
– Make a hole in the wall sufficiently
large to allow for insertion of a ø 130
mm PVC pipe of the same length as
the thickness of the wall it has to
pass through. Then fix the PVC pipe
in place using cement mortar.
WARNING: When cutting the pipe,
remember that the ø 60 mm flue
discharge tube must be approx. 25
mm longer than the air intake tube.
– Before sliding the pipe into the hole
made in the wall, insert the rubber
sealing ring (E) into its seat made in
the tube.
– Push the tube outwards until the
gasket comes out. Pull the pipe
inwards bringing the ring to rest on
the wall.
– Slide the inner ring (D) and the metal
collar (I) onto the pipe.
– Push the flue discharge duct (F) fully
home in the bend and fasten the
metal collar (I) in position, tightening
the two fixing screws.
– Fasten the duct (C) by tightening the
two screws (H) on the aluminium
ring nut (D).
2INSTALLATION