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6
Piping Connection
16
4
15
3
14
27
17
13
12
10
2
1
8
9
5
Figure 5.
Principal Piping Connection
Position Explanation
Position Explanation
1
Upper condensate outlet
12
Valve stem
2
Lower condensate outlet
13
Expansion vessel (if required)
3
Hot water tap
14
Solar water inlet
4
Solar sensor
15
Solar water outlet
5
Drain barrel
16
Drain pipe
8
Temperature and pressure valve
17
Mixing valve
9
Anode rod
27
Water inlet
10
Hot water outlet
Warning! If a solar energy solution is installed, the water temperature can rise very quickly. Preventive
measures must be taken for the piping connections.
Note! If the water pressure is too high (above 5 bars), a pressure reducer should be installed at the water
inlet. This is the installer´s responsibility.
In principle, arrange the water pipes connections as illustrated in the above figure example.
Note! A safety valve should be installed at the water inlet of the unit.
6.1
Water inlet and outlet pipes
The specification of the water inlet or outlet (internal) thread is DN20 (RC3/4”). Pipes must be heat-resistant and
durable.
12 – Installation, Service and User Manual VMGFK202
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