User`s manual

INSTALLERUSERTECHNICIAN
1919
Boiler ignition. Before lighting, make sure that the
system is full of water and that manometer (6)
indicates a pressure of 1 - 1.2 bar.
- Open the gas valve upstream of the boiler.
- Turn the main switch (5) to Domestic or Domestic
and Heating (indicator lamp 4 on).
With the switch set to ( ) the heating control selector
(1) is inhibited, and the domestic water temperature
is regulated via selector (2).
With the switch set to ( ) the heating adjustment
selector (1) is used to regulate the temperature of
radiators, while selector (2) is used for the domestic
water, turn the selectors clockwise to raise the tem-
perature, anticlockwise to lower.
Boiler operation is now automatic. With no specific
indications, it is advisable to keep the domestic water
regulation selector (1) between the values 3 and 6,
as this position provides an optimum water tempe-
rature without forming scale.
Overtemperature block. Red indicator lamp (3)
on. If during operation a fault causes the tempera-
ture to exceed 100°C.the boiler goes on
“overtemperature” block (indicator lamp 3 on). To eli-
minate the “overtemperature block”, turn the main
switch (5) temporarily to the Reset position.
If this function is activated repeatedly, contact a
qualified technician for assistance (e.g. Immergas
Technical Services Centre).
Flue block - Red indicator lamp (3) on. During
operation, if the fumes exhaust duct does not work
properly the boiler goes on “flue block” (indicator light
3 on). To eliminate the “block”, turn the main switch
(5) temporarily to the Reset position.
If this function is activated repeatedly, contact a
qualified technician for assistance (e.g. Immergas
Technical Services Centre).
Ignition block - Red indicator lamp (6) on. Each
time heating or hot water production is required the
boiler lights automatically. If the boiler does not light
within 10 seconds, the boiler goes on “ignition block”
(indicator lamp 6 on).
To eliminate the “block”, turn the main switch (5)
temporarily to the Reset position.
On initial ignition or following a prolonged period of
inactivity the “ignition block” may need to be inhibited.
If this function is activated repeatedly, contact a
qualified technician for assistance (e.g. Immergas
Technical Services Centre).
Boiler shutdown. Turn off the main switch (5) by
turning it to “0” (yellow indicator lamp 4 off) and close
the gas supply valve upstream of the appliance.
Never leave the boiler switched on if left unused for
prolonged periods.
2.5 Restore heating system pressure.
Periodically check the system water pressure.
The boiler pressure gauge should read a pressure
of between 1 and 1.2 bar.
If the pressure falls below 1 bar (with the circuit cold)
restore normal pressure via the valve located at the
bottom of the boiler (see figure).
N.B.: close the valve on completion. If pressure
values reach around 3 bar the safety valve may be
activated. In this case contact a professional
technician for assistance. In the event of frequent
pressure drops, contact qualified personnel for
assistance to eliminate system leakage.
2.6 Draining the system.
To drain the boiler, use the special drain cock (see
figure on page 17).
Before draining, ensure that the filling valve is closed.
2.7 Boiler emptying.
To drain the boiler, use the special drain cock (see
figure above and on page 17).
N.B.: Before carrying out this operation, close the
boiler cold water inlet cock and open any domestic
circuit hot water cock to allow air to enter the boiler.
2.8 Anti-freeze protection.
The boiler comes standard with an anti-freeze
function that starts the pump and burner when the
room temperature falls below 4°C. The anti-freeze
function is guaranteed if the boiler is fully operative
and not in “block” status, and is electrically fed with
the main switch set to Summer or Winter. To avoid
continued operation in the event of prolonged
absence, the system must be drained completely or
anti-freeze substances should be added to the
heating system water. In both cases the boiler
domestic water circuit must be drained. In appliances
subject to frequent draining, the system must be
refilled with suitably treated water to eliminate
hardness that may cause limescale formation.
2.9 Casing cleaning.
Use damp cloths and neutral detergent to clean the
boiler casing. Never use abrasive or powder
detergents.
2.10 Decommissioning.
In the event of permanent shutdown of the boiler,
contact professional personnel for the procedures
and ensure that the electrical, water and gas supply
lines are shut off and disconnected.
GAS COCK
FILLER COCK
DRAIN COCK