20 Installation and maintenance instructions ecoTEC plus 0020244998_04
2. Ensure correct water pressure and flow requirements
and that any expansion can be accommodated with the
cold supply pipe work.
7.6 Installing pipe connections between the
shift-load cylinder and the heat generator
1. Install pipe connections between the shift-load cylinder
and the heat generator.
2. From the shift-load cylinder installation kit, install first
the pipes (1) and (2), and then the pipes (3) and (4), to
a professional standard.
◁ These join the shift-load cylinder and the heat gen-
erator with integrated hot water generation to create
the product VUI.
7.7 Connecting the heating flow and heating
return
▶ Make the heating connections as shown in accordance
with the relevant standards.
7.8 Connecting the condensate discharge pipe
Danger!
Risk of death from escaping flue gases!
The condensate drain pipework for the si-
phon must not be connected tightly to waste-
water piping because, otherwise, the internal
condensate trap may be drained fully and flue
gas may escape.
▶ Do not connect the condensate drain
pipework tightly to the waste-water pip-
ing.
The product is equipped with a condensate trap (2). The
condensate trap collects the condensate that has formed in
a vessel with a volumetric capacity of approximately 200 ml,
and intermittently releases the contents into the drain pipe.
This minimises the risk of the drain pipe freezing.
▶ Follow the instructions listed here and observe directives
and local regulations on condensate discharge.
▶ If you cannot guarantee that the materials from which the
condensate discharge pipe is made are suitable, install a
system to neutralise the condensate.
▶ Connect the condensate discharge pipe (1) to condens-
ate drain pipework (3) which has a minimum internal dia-
meter of 19 mm (22 mm outside diameter for all external
pipes) and is made from an acid-resistant material (e.g.
plastic overflow pipe).
– The condensate discharge pipework must have
a continuous fall (45 mm per metre) and should
whenever possible terminate at a suitable discharge
point within the heated envelope of the building
that will remain frost free under long periods of low
external temperatures.
Note
Ensure that the connection between the con-
densate discharge pipe and the drain hose is
not air-tight.
▶ During installation remove all burs from inside of cut pipe
work and avoid excessive adhesive which may trap small
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