
14
uments, is 15 years. Therefore, the replacement of these appli-
ances generally takes place for reasons of plant modernisation.
Cast iron boilers, produced with innocuous materials, can be
disposed of as follows:
Cast iron body (Grey cast Iron)
Using disposal companies
specialised in iron and cast
iron foundries
Casing piping and panels Using disposal companies
specialised in iron
Other Metal Parts Using disposal companies
specialised in iron
Thermal ceramic and other
insulating materials
Using normal waste disposal
services
NOTA:
For more information please contact an authorised deal-
er
1.20 Fire prevention regulations for the boiler
room
The RTT 76-145 boilers should be positioned and installed par-
ticularly carefully and in conformity with re safety regulations.
When installing and using the boiler, a safety distance of 200
mm must be observed from class B, C1 and C2 ammable ma-
terials.
For class C3 materials that easily catch re, namely materials that
burn quickly and that keep combusting even after removal from
the source of the ignition, the safety distance is 400 mm.
The safety distance should be doubled also when the amma-
bility class of the material has not been be ascertained.
Flammability classes of the
materials and the construc-
tion products
Materials and construction
products
A - Non-combustible
Granite, sandstone, bricks,
ceramic tiles, mortar, re-
proof plasters etc.
B - Almost non-combustible
acumin, izumin, heraklit,
lignos, basalt panels and
bre, berglass panels etc.
C1- Difcult to ignite Beech or oak, hobrex panels,
plywood, werzalit etc.
C2 - Normal combustibility
Pine, larch, white wood,
panels of wood shavings and
cork, rubber oors etc.
C3 - Easily ignited
Tar-coated sheets, polyure-
thane, polystyrene, polyethyl-
ene, PVC etc.
NOTA:
For more information, contact an authorised service
company.
1.21 Boiler checks and start-up
Preliminary checks
The following checks need to be carried out before starting the
boiler. In the event of problems or faults, the boiler should not
be started.
−Adequately air the room.
−Check the level of water in the boiler. If the level is below
the minimum, add the necessary amount of water.
−If the hydraulic system is leaking water, contact the tech-
nical assistance service, which will carry out repairs, and
in any event carry out the repairs before starting the boil-
er.
−Check the connection between the fuel tank and the
burner. In the event of leaks or faults restore the connec-
tion before starting the boiler. Clean the lters.
−if the boiler runs on gas, make sure that the tank is
charged and check that the gas valves are open.
−If the boiler runs on liquid fuel, check the level in the fuel
tank and make sure the fuel valve is open.
−Check the pumps are running and check their rotation
direction.
−Check the control panel's electrical system.
−All the boiler's gas and water valves should be open.
9 Check all the other connections depending on the system's
options.
Boiler start-up
−Engage the electrical supply using the main switch in the
boiler room, the operating lamp will come on.
−Start the circulation pump
9 It is mistaken to wait until the water temperature goes
above 40°C before starting the pumps, the circulation pump
and the burner should operate contemporaneously.
−Start the burner (carrying out the commands described in
the burner's instruction manual).
−Set the temperature of the boiler between 30 and 90° C. If
the burner is a two-stage burner, adjust the temperature
of the second stage to 5-10°C less than that of the rst
stage. This will make the second stage light come on.
−If the burner does not start, follow the instructions in the
burner's manual. If it is not possible to start the burn-
er after following the manual's instructions, contact the
burner's technical assistance centre.
Switching off the boiler
−Switch off the burner (carrying out the commands de-
scribed in the burner's instruction manual).
−Set the “ON/OFF” switch on the control panel to “OFF”.
−Switch off the circulation pump
−Close all the fuel valves.
−Switch off the electrical supply using the master switch in
the boiler room.
First checks in the event of a fault
When the burner or a boiler has a fault, check the following be-
fore calling for assistance. Do not carry out any other interven-
tion except for the controls indicated. After these checks, contact
the technical assistance service.
−Check that the fuel is being correctly supplied to the burn-
er. If necessary, reconnect the fuel supply to the burner.
−Check that the pump is working. If the pump has stopped
it could be the cause of the overheating. Contact the
pump's manufacturer or distributor. If the boiler stops
and does not restart, the stop could have been caused by
the safety thermostat because of the overheating of the
water in the boiler. In this case, wait for the boiler to cool
down and carry out the following checks.
−Check the position of the valves. If the valves are closed,
open them.
−Press the switch of the safety thermostat when the boiler
has cooled down sufciently, the burner should restart.