Installation - Master BV Series User And Maintenance Book

surface.
► Check heater before starting and regu-
larly during operation.
► Keep children and animal away from
heater.
► Always separate heater from mains
when not in use.
► Never fit heater with a different burner
or increase burner output over nominal
power of heater as indicated on specifi
cation adhesive.
► Never block air inlet or outlet since this
could lead to ventilation motor overload
and consequently to overheating of unit.
WARNING: Only the burners
which are chosen and supplied by
the manufacturer can be used. If
another type of burner is used the
heater no longer complies with
CE regulations.
There are three safety devices which are
activated in case of serious malfunction.
The Burner Control Device, which is moun-
ted on the burner and has a restart button,
automatically stops the burner if the flame
goes out. The Overheat Thermostat, TS,
of the manuel restart type, is activated if
the temperature of the combustion cham-
ber rises above the set maximum limit; the
warning light (8 Fig. 1) lights up and the
heater stops working. The Thermal Relay,
RT, is activated if the fan motor starts to
use more electrical current than the maxi-
mum permitted limit; the warning light (9
Fig. 1) lights up and the heater stops wor-
king. If any of these safety devices are ac-
tivated you should check carefully what
the problem actually is before pressing
the restart button and starting the heater
off again (cfr. OBSERVED FAULTS, CAU-
SES AND REMEDIES). Overheat safety
thermostat, TSS, shuts down the heater
if air flow is not sufficient to cool off com-
bustion chamber: the heater will restart
automatically as soon as the heater has
cooled down enough.
►►3. INSTALLATION
WARNING: The following ope-
rations must be carried out by
qualified personnel only.
ELECTRICAL CONNECTIONS
SETTINGS.
WARNING: The mains supply to
the heater must be earthed and
have a magneto-thermal switch
with differential. The power cord
must be connected to a switch
board which has a disconnecting
switch.
The following operations must be carried
out:
► Plug in the power cord having read the
adhesive label which
supply characteristics.
► Connect accessories such as the room
thermostat or clock to the unit's electric
switchboard: electric wire must be con-
nected by means of the cable socket (7
Fig. 1) to the terminals. When the heater
is first turned on you must check that the
fan does not use more current than the
maximum permitted limit. Finally, to regu-
late the burner follow the instructions in
the Burner Instruction Manual.
CONNECTION TO HOT AIR DUCTS
(Fig. 2)
The heaters can be delivered with follo-
wing accessories: 1-way or 4-way air out-
let cones.
The new head with the exception of the
"plenum", may be connected to new air
ducts if the user wishes to satisfy speci-
fic needs. In this case and in particular if
the diameter and length of the ducts have
been changed or if the number of bends
has been modified, air output may vary.
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