12
MAINTENANCE
MISE EN SÉCURITÉ
DRAINING THE BOILER
Water flowing out of the drain cock may be
extremely hot and could cause severe scalding.
Keep people away from discharges of hot
water.
Draining the heating circuit
1.
Put the main switch on the control panel to OFF, cut the outside
power supply and close the gas-supply valve to the boiler.
2.
Close the isolating valves (4) or manually set the 4-way valve (1)
to “0”.
3.
Connect a flexible tube to the drain cock (7).
Make sure it is properly connected.
4.
Open the drain cock and allow the hot water to flow into the
drain.
Drain the hot water circuit
1.
Turn OFF the on/off switch on the boiler control panel, isolate
external electrical supply, and turn off the gas or oil supply to the
boiler.
2.
Release the pressure in the heating circuit until the pressure
gauge indicates zero bar.
3.
Close stop cock (1) and turn off tap (8).
4.
Open valve (9) then valve (10).
5.
Let the water empty into the drain.
For the tank to be emptied, valve (9) must be situated
at ground level.
D A N G E R
HOT
1
2
3
4
5
2
6
7
8
9
10
11
I
O
1
4
2
3
6
5
8
I
O
7
4
9
PLACING THE BURNER IN SAFETY MODE
When the burner is in safety mode, the safety indicator located on
the burner and the control panel lights up.
The red warning light indicates an operating fault. Wait one minute
before rearming the burner by pressing the button on the burner.
If the burner does not relight, call the service engineer after ensuring
that the fault is not due to a power cut or low oil in the tank.
PLACING THE BOILER IN SAFETY MODE
When the high-limit thermostat indicator light on the control panel
comes on: rearm the manual reset high-limit thermostat.
If the anomaly persists, contact your engineer.
I
O
Manual reset high
limit thermostat
Burner
lockout
indicator
Combined temperature
and pressure gauge
Time clock
Control
thermostat
ON / OFF
switch
Primary circuit low
water pressure
indicator
High limit cutoff
indicator
Summer / Winter switch
