Hydraulic installation
Installation and maintenance instructions ecoTEC plus 0020116700_01 23
6
6.2 Connecting the hot and cold water
(VUWboiler)
1
2
3
4
5
6
7
6.1 Fitting the hot and cold water connection
> Make the water connections as shown.
6.3 Connecting the domestic hot water cylinder
> When connecting the domestic hot water cylinder to the
ecoTEC plus, follow the installation instructions for the
domestic hot water cylinder.
6.4 Connecting the heating flow and heating
return
6.4.1 VUW boiler
11 12
13
10
9
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6
1
2
3
4
5
6.2 Fitting the heating flow and heating return (VUW boiler)
> Make the water connections as shown.
6.4.2 VU boiler
1
2
3
4
5
6.3 Fitting the heating flow and heating return (VU boiler)
> Make the water connections as shown.
6.5 Low loss header
A low loss header disconnects the boiler from the heating
system. The system is no longer dependent on the remain-
ing feed head of the boiler. In conjunction with the boiler
circulation pump, the low loss header ensures that a suffi-
ciently high minimum quantity of water is always circulating
through the boiler. No electrical accessories are required in
order to use a low loss header.
6.6 Connecting the condensate discharge
pipework
a
Danger!
Risk of death from flue gases!
An empty or insufficiently filled condensate
water siphon can generate flue gas in the
room air.
> Make sure that the condensate water
siphon is filled with water when switching
on the boiler.
The ecoTEC plus boilers are equipped with a condensate
siphon. (The filling height is 145mm). The siphon collects
the condensate that has formed in a vessel with a capacity
of approx. 200 ml, and intermittently deposits the contents
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