5.5.3
Auxiliary heat source provides additional heating
If the Mono unit’s outlet temperature is too low, the auxiliary heat source provides additional heating to raise the water
temperature to the set temperature. An additional 3-way valve is required. When the Mono unit’s outlet temperature is
too low, the 3-way valve is open and the water flows through the auxiliary heat source. When the Mono unit’s outlet
temperature is high enough, the 3-way valve is closed.
Figure 1-5.7: Space heating and domestic hot water with auxiliary heat source providing additional heating
Legend
1
Outdoor unit
9
Mixing station (field supplied)
2
Plate heat exchanger
10
Distributor (field supplied)
3
Backup electric heater (customized)
11
Collector (field supplied)
4
Internal circulator pump
12
Domestic water tank (field supplied)
5
Stop valve (field supplied)
13
Heat exchanger coil
6
User interface
14
Immersion heater
7
Non-return valve (field supplied)
FHL 1...n
Floor heating loops (field supplied)
8
Motorized 3-way valve (field supplied)
AHS
Auxiliary heating source (field supplied)
Notes:
1.
The example is just for application illustration; please confirm the exact installation method according to
the installation manual.
15