Installation and maintenance instructions ecoTEC plus 937 0020031552_06
11
The ecoTEC plus 937 is a fully-automatic wall-mounted
unit with condensing technology for central heating and
hot water preparation and with a shift load storage tank
for the storage of hot water.
Mains cold water heated by the combi boiler is fed to
the heat insulated storage tank by means of a modulat-
ing storage tank charging pump.
The provision of hot water takes place directly from the
combi boiler without the need for a copper cylinder, a
cold water tank or a supply and expansion vessel with
the corresponding pipework. The provision of hot water
has priority over the central heating.
The combi unit supplies the shift load storage tank with
electrical energy for the storage tank charging pump.
The combi unit is equipped with a warm start function
which keeps the heat exchanger hot so that hot water is
immediately available.
The temperature in the hot water heat exchanger is lim-
ited by the control system.
Fitting a water softener on the mains cold water inlet of
the combi boiler is not necessary. In regions with
extremely hard water (greater than 300 mg/l of CaCO
3
)
however a water softener may still be fitted in order to
prevent the formation of scale build up in the water
pipes.
The heating system can be filled using the filling devices
fitted to the ecoTEC plus combination boilers.
The ecoTEC plus 937 is be supplied for natural gas and
can be converted for propane gas with a conversion kit.
3 Safety
3.1
Safety and warning information
When conducting installation and maintenance work,
observe the general safety instructions and the warning
notes that appear before each of the actions.
3.1.1 Classification
of
warnings
The following warning signs and signal words are used
to classify the warning notices in accordance with the
severity of the possible danger:
Warning sign
Signal
word
Explanation
a
Danger!
Immediate danger to life or risk
of severe
personal injury
e
Danger!
Risk of death from
electric shock
a
Warning!
Risk of slight personal injury
b
Caution!
Risk of material or environmental
damage
3.1.2 Structure
of
warnings
Warning signs are identified by an upper and lower sep-
arating line. They are laid out according to the following
basic principle:
a
Signal word!
Type and source of danger.
Explanation of the type and source of danger.
Measures for averting the danger
3.2 Intended
use
The ecoTEC plus 937 is a state-of-the-art appliance
which has been constructed in accordance with recog-
nised safety regulations. Nevertheless, there is still a
risk of injury or death to the user or others or of dam-
age to the equipment and other property in the event of
improper use or use for which they are not intended.
>
Unit description, data and dimensions 2
Safety 3
Summary of Contents for ecoTEC plus 937
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