14
1.22
Fire prevention regulations for the boiler
room
The RTT boilers should be positioned and oriented carefully and
in compliance with safety regulations.
During boiler installation and commissioning operations it is
necessary to maintain a safety distance of 200 mm from inflam-
mable materials with class B, C1, C2 inflammability.
In the case of easily flammable materials with class C3 inflam-
mability, which burn rapidly and independently even after the
removal of the ignition source, double the safety distance to 400
mm.
The safety distance should be doubled also when the flamma-
bility class of the construction material has not been tested.
Flammability classes of
the construction mate-
rials and products
Flammability classes of the mate-
rials and construction products
A - non-combustible
Granite, sandstone, bricks, ceramic
tiles, mortar, fire-proof plasters, ...
B - practically non-com-
bustible
Acumin, Izumin, Eraclit, Lignos, ba-
salt fibre panels and felt, fibreglass
panels, ...
C1- difficult to ignite
Beech and oak, Hobrex panel, ply-
wood, Werzalit,……………..
C2 - normal
combustibility
Pine, larch, white wood, panels of
wood shavings and cork, rubber
floors, ....
C3 - easily ignited
Tar-coated sheets, polyurethane,
polystyrene, polyethylene, PVC, ....
NOTA:
For more information please contact an authorised deal-
er
1.23
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 filters.
− 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 according to the system's
options.
1.24
Boiler start-up
− Engage the electrical supply using the master 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 first
stage. This will make the second stage lamp 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.
1.25
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.
1.26
First checking of faults
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 stops it could
cause 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 sufficiently, the burner should restart.
− If the burner does not start, or if the safety thermostat
stops the boiler again, contact the technical assistance
service.
− If the warning light of the burner is on, consult the burn-
er's instruction manual or contact the appliance's man-
ufacturer or dealer.
