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5 Installation
5.1
Installation requirements
5.1.1
Information on liquefied petroleum gas
operation
In the as-delivered condition, the product is preset for opera-
tion with the gas group indicated on the data plate.
If you have a product that has been preset for operation with
natural gas, you must convert it to run on liquid gas. You will
need a conversion set for this. The conversion procedure is
described in the manual supplied with the conversion set.
5.1.2
Purging the liquid gas tank
If the liquid gas tank is not purged properly, this may result in
ignition problems.
▶
Ensure that the liquid gas tank has been purged properly
before installing the product.
▶
If required, contact the filler or the liquid gas supplier.
5.1.3
Using the correct type of gas
Using the incorrect type of gas may cause fault shutdowns in
the product. Ignition and combustion noise may occur in the
product.
▶
Only use the gas type listed on the data plate.
5.1.4
Required preliminary work
1.
Make sure that the existing gas meter is capable of
passing the rate of gas supply required.
2.
Install a system separator (to be provided on-site) dir-
ectly on the cold water connection for the combination
unit.
3.
Check that the volumetric capacity of the expansion
vessel is sufficient for the system volume.
▽
If the volume of the expansion vessel is insufficient
for the system.
▶
Install an additional expansion vessel in the
heating return, as close to the product as pos-
sible.
▶
Install a non-return flap at the product's outlet
(heating flow).
4.
Ensure that the system has the following components:
–
A cold water stop cock for the unit
–
A gas stopcock for the unit
–
A filling and draining device in the heating installa-
tion
12
5.2
Gas and water connections
Conditions: Product with integrated domestic hot water generation
3
2
1
1
Heating flow connec-
tion, G3/4
2
Hot water connection,
G3/4
3
Gas connection, G1/2
▶
Connect the water and gas connections in accordance
with the applicable standards.
Conditions: Product with heating mode only
3
2
1
1
Heating flow connec-
tion, G3/4
2
Unused connection,
G3/4
3
Gas connection, G1/2
▶
Connect the water and gas connections in accordance
with the applicable standards.
Installation and maintenance instructions ecoTEC pure 0020258016_01
5
4
4
Connection for the cold
water supply line, G3/4
5
Heating return connec-
tion, G3/4
5
4
4
Unused connection,
G3/4
5
Heating return connec-
tion, G3/4
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