Protherm Leopard 24 BOV User And Installation Instructions Manual - Servicing and Maintenance
11
Servicing and maintenance
Refilling water to heating system
Caution:
The boiler is installed as part
of a sealed system which must only be
drained and filled by a com pe tent person.
Common user can fill and drain boiler in
order to keep the heating water pressure
in recommended range 1-2 bar.
When refilling, follow these conditions:
• The pressure of the water source must be
higher than that of the water in the heating
system;
• The temperature in CH has to be lower
than 30°C.
• Recommended water pressure in cold boil-
the boiler’s warranty.
Warning:
The protective functions are
only active if the boiler is plugged into the
electrical grid socket and the main switch
is on (in the “I” position).
Stoppage and recovery of electricity
supply
If there is a stoppage in electricity supply,
the boiler is switched off. When the electric-
ity supply is recovered, the boiler will switch
on, without a loss of the parameters.
If the
F1
fault message is shown on the
display after the electricity supply recovery,
turn mains on/off switch from position „
I
” to
position „
0
“ and again to position „
I
“ (see
Control and Signalling).
If the boiler does not restart, the overheat
de vice may need resetting by a specialised
service centre.
Pump after-running
The pump after-running is standardly set
from factory on 45 sec after shutdown
of boiler by room termostat. If no room
thermostat is used, the pump runs con-
tuniously.
Above-mentioned adjustment can be
changed on the 45 second pump running
after burner stop. This is recommended in
case regulation without room thermostat
Caution:
The chages of the pump affter-
running can makes only competent person
autorised by the manufacturer.
Safety valve
The boiler is equipped with a safety valve.
DO NOT TOUCH THE SAFETY VALVE! If
water is leaking from the valve, switch the
boiler off, unplug it and call a specialised
service centre. Only qualified persons
are allowed to fill the boiler with water or
discharge water from the boiler. If there is
a repeated drop of pressure, discuss the
defect with your service centre.
Air flow rate safety device (for version
24BTV with forced flue gas removal)
If an obstruction, even partial, of the flue
occurs, the built in safety sys tem of the
boiler will turn the boiler off. The boiler will
be ready to op er ate when the fault has
been cleared.
Chimney draft control system (for ver-
sion 24BOV with flue gas removal by
means open chimney draught)
If the chimney draught is impaired or
blocked, gas supply is stopped and the
boiler is automatically shut down and it
will light up fault
F1
display on the control
panel. The boiler can be start after cooling
up the flue-gas safety thermostat by turning
the mains on/off switch from position „
I
” to
position „
0
“ and again to position „
I
“.
er (to 30°C) is in range from 1 to 2 bar.
Note:
If the pressure in the water mains
were the same or lower than that in the
heating system, there would be a risk of
heating water entering the water mains,
which must not be allowed. The risk is
lowered by installing a backflow valve on
the water-supply pipe in boiler.
The manufacturer is not liable for any
damages caused by tampering with the
refilling or draining valve or failures to
adhere to the above conditions. No dam-
ages or defects so caused are covered
by the boiler’s war ran ty.