Vaillant ecoTEC plus 937 Operating Manual - page 4
Operating instructions ecoTEC plus 937 / 0020031573_02
4
• Do not smoke.
• Shut off the gas supply at the meter.
• Open the windows and doors.
• Warn other residents.
• Get out of the house.
• Consult your gas supplier, service agent or other com-
petent person.
2.3 Safety
instructions
Always observe the following safety instructions and re-
gulations.
d
Danger!
Inflammable mixtures of gas and air may explode
Do not use or store explosive or easily flam-
mable substances such as petrol or paint in the
same room as the appliance.
d
Danger!
Risk of poisoning and explosion due to a mal-
function
Never put the safety devices out of operation or
tamper with them so as to impair their function.
2.4
Modifications to the boiler and its environ-
ment
No changes must be made to the following objects:
– The boiler
– To the gas, water and power supply
– Flue system
– The safety valve for heating water
– Any structural changes around the appliance that
could affect the operational safety of the boiler.
a
Caution!
Inappropriate alterations can cause damage!
Under no circumstances should you ever att-
empt to make alterations to the gas wall-moun-
ted boiler or other parts of the system.
Never try to carry out maintenance work or re-
pairs on the appliance yourself.
• Do not damage or remove seals on components. Only
suitably qualified heating engineer or our customer
service may removed sealed components.
d
Danger!
Risk of scalding.
The water coming out of the tap can be very
hot.
a
Caution!
Risk of damage!
Do not use sprays, solvents, chlorinated clea-
ning agents, paint, adhesives or similar sub-
stances in the vicinity of the appliance. These
substances can cause corrosion, including in
the flue system.
2.5 Setup
and
adjustment
a
Caution!
Important!
The appliance must be installed and serviced by
a Competent Person as stated in the Gas Safe-
ty (Installation and Use) Regulations 1998. In
IE, the installation must be in accordance with
the current edition of I.S.813 ‘Domestic Gas In-
stallations’, the current Building Regulations
and reference should be made to the current
ETCI rules for electrical installation.
a
Caution!
The appliance may only be operated with its ca-
sing properly and permanently closed. Other-
wise, in unfavourable conditions, material da-
mage or even injury or death can result.
Filling pressure of the heating system
Regularly check the filling pressure of the heating sys-
tem (see Section 4.2.2).
Leaks
If there is a leak in the water pipes between the appli-
ance and the taps, immediately turn off the cold water
shut-off valve and have your engineer repair the leak.
Frost protection
Your boiler is fitted with a frost protection function:
If the temperature of the heating water falls below 5 °C
with the main switch in the on position, the boiler will
switch on and the heating circuit is heated up to approx.
30 °C.
h
Note!
It cannot be guaranteed that water is circula-
ting through the entire heating system.
If the boiler is not operated for several hours during
very cold weather there is a danger that the system will
freeze up.
Make sure that the central heating system remains swit-
ched on during extended periods of frost and that the
temperature in all the rooms remains above freezing.
It must, however, be pointed out that the boiler will be
switched off automatically by the built-in checking de-
vices if certain errors arise (e.g. interruption in the
power or gas supply and faults in the flue gas removal
system). In order to prevent the danger of freezing up
you can drain both the boiler and the heating system.
h
Note
The frost protection and monitoring devices are
only active if the main switch of the unit is in
position "I“ and the boiler is connected to the
power supply. Please observe the instructions
concerning frost protection in Section 4.9 in all
cases
2 Safety