20
Installation and maintenance manual ecoTEC
ba
r
1
2
3
4
5
6
7
Fig. 4.7 Installing the hot and cold water connection (ecoTEC
pro)
Note
Flush all foreign matter from the mains supply
before connecting to the boiler.
• Insert the packing (
1
) and screw in the maintenance
tap (
2
) at the appliance cold water connection.
• Insert the union nut (
4
) and the pinching ring (
3
) on
the conduit arc provided with ecoTEC plus appliances
(
5
). The diameter of the conduit is 15 mm.
• Insert the conduit arc until the stopper in the mainte-
nance tap. Tighten the union nuts in this position.
• Insert the packing (
7
) and screw in the conduit (
6
) on
the appliance hot water connection. The diameter of
the conduit is 15 mm.
• Mount the handle for the fill-up valve with a counter-
sunk screw on the maintenance tap (
2
).
4.10 Heating
connection
4.10.1
Heating flow and return connection
Note
Before connecting the heating circuit to the
boiler, all pipework and radiators must be thor-
oughly flushed to remove any installation
debris.
ecoTEC plus, 800 series
10
11
12
13
9
8
7
6
1
2
3
4
5
Fig. 4.8 Installing the heating flow and return connection for
ecoTEC plus, 800 series
• Insert the packing (
1
) and screw in the maintenance
tap (
2
) at the return connection of the appliance.
• Insert the packing (
10
) and screw in the maintenance
tap (
9
) at the flow connection of the appliance.
• Install the O-ring seal (
12
) on the return valve (
11
).
Note
Lay the filling conduit (13) above the conduit
elbows.
• Insert the union nuts (
4
) and (
7
) as well as the pinch-
ing rings (
3
) and (
8
) on the conduit elbows (
5
) and
(
6
). The diameter of the conduits is 22 mm.
• Insert the conduit elbows until the stopper in the
maintenance taps. Tighten the union nuts in this posi-
tion.
• Mount the handle for the fill-up valve with a counter-
sunk screw on the maintenance tap (
9
).
4 Boiler installation sequence
