Specifications

Boiler installation sequence
26 Instructions for installation and servicing ecoTEC 839592_13
4
4.8 General instructions for heating system
b
Caution!
Risk of damaged boiler caused by contami-
nated lines!
Foreign bodies such as welding remnants,
sealing residue or dirt in the water lines can
cause damage to the boiler.
> Flush the heating installation thoroughly
prior to installation.
– The appliance is fitted with an expansion vessel
(10 l/(0.75 bar) 75 kPa).
> Before assembling the appliance check if this volume
is adequate. If not, an extra expansion vessel must be
installed, see section 3.10.5.
4.9 Gas connection
i
With the spacer frame (Art. No 308 650), the
pipes can be fitted vertically upwards behind
the appliance. The distance of the appliance
from the wall thus increases by 65 mm.
a
Danger!
Risk of death from incorrectly installed gas
system!
An improper gas installation may impair the
operational safety of the appliance and result
in material damage or personal injury.
> The gas installation may only be carried
out by a competent person approved at the
time by the Health and Safety Executive.
Work must be in accordance with regula-
tions introduced in 1998 governing the
safety of gas installations (installation and
use).
> The legal directives and the local regula-
tions for gas supply companies must be
observed.
a
Danger!
Risk of death from incorrectly installed gas
system!
Tension in the gas line can result in leaks or
an explosion.
> Make sure there are no stresses in the gas
line when it is installed.
b
Caution!
Risk of damage caused by incorrect gas
installation!
Excess test pressure or operating pressure
can cause damage to the gas fitting.
> When testing the gas regulation block for
leaks, the maximum pressure at the fitting
must not exceed 150 hPa (mbar).
b
Caution!
Risk of damage to isolation valves caused
by heat transfer!
If the final connections are soldered, the heat
transferred during the process may damage
the isolation valves.
> Do not solder fittings to the pipes whilst
connected to the isolation valves.
> Cool and clean the pipes before fitting
them into the valves.
> Ensure all subsequent soldering operations
are carried out at least 450mm away from
the valves.