0020285063_05 Installation and maintenance instructions
13
4
3
5
6
10
11
12
1
9
2
7
8
1
Dielectrically isolated
hydraulic connection
2
Thermostatic mixer tap
3
Safety assembly
4
Stopcock
5
Non-return valve
6
Pressure reducer
7
Domestic hot water flow
8
Cold water pipe
9
Expansion vessel
10
Drain valve
11
Tundish
12
Temperature and pres-
sure relief valve
5.2.2
Hydraulics installation
▶
Use flat seals.
–
Torque:
≤
20 Nm
5.2.3
Connecting the pipe coil cylinder
1
2
3
1.
Ensure that the distance between the heat generator
and the product is as small as possible in order to pre-
vent heat losses.
2.
Connect the cold water pipe
(1)
.
–
Minimum diameter of the copper pipe:
≥
22 mm
3.
Connect the domestic hot water flow to
(2)
.
–
Minimum diameter of the copper pipe:
≥
22 mm
4.
Carry out a leak-tightness check on all connections,
including the expansion relief valve
(3)
.
5.2.4
Installing the drain valve
The drain valve must be supplied by the customer.
Install the drain valve at the height of the cold water supply
or further below this level.
5.2.5
Installing the safety assembly
Caution.
Excessive pressure in the domestic hot
water cylinder
Excessive pressure in the domestic hot water
cylinder may cause the cylinder to burst.
▶
Ensure that the expansion relief valves
are not blocked.
▶
Ensure that there is no isolation valve
between the safety group and the cylin-
der.
2
3
4
5
6
7
8
1
1
Cold water with equal
pressure
2
Cold water inlet (22
mm)
3
Pressure reducer
4
Expansion relief valve
5
Outlet for the expansion
relief valve (15 mm)
6
Connection for the
expansion vessel (22
mm)
7
Flow of the cold water
supply to the cylinder
8
Connecting a mano-
meter (optional, not in-
cluded in the scope of
delivery)
1.
Before installation, flush the pipes in order to clear any
contamination and prevent the build up of dirt.
2.
Install the safety assembly horizontally and install the
expansion relief valve so that it is facing upwards.
3.
Note the flow direction, which is specified by an arrow.
4.
Connect the safety assembly to the drain valve. Con-
sult the table below to find out the length to which the
pipe should be cut.
