EN-RATIOfresh-250-400_TI-MA-0809-11214900
27
Figure 13 Solar installation for hot water heating and heating support. System as heating buffer system with pellet boiler, buffer cylinder RATIO HP
G, and RATIOfresh freshwater station. Water is heated using an electronically controlled flow process. The RATIOfresh controller maintains a con-
stant withdrawal temperature and especially low buffer cylinder return temperatures as well as speed-controls the hot water circulation pump. The
pellet boiler heats only the upper buffer cylinder section.
Figure 14 Solar installation for hot water heating and heating support. System with oil or gas boiler, 2 buffer cylinders RATIO HP, and freshwater sta-
tion RATIOfresh. Buffer cylinder 1 is first charged by the collector field. Water is heated using an electronically controlled flow process. The freshwa-
ter station controller not only ensures an energetically favorable discharging of the buffer cylinder when tapping hot water, it also runs the speed-
controlled hot water circulation pump. If temperatures in the primary buffer cylinder are sufficient, solar heat is used for heating by raising the heat-
ing return temperature.
9. System Solutions – Example
RA
TI
O-
H
P
G
RA
TI
Of
re
sh
T
P2
T
T
Vm
T
T
SU
NGO
P4
P5
HKM
P1
P1
CI
RCO
P3
Solar controller
T-storage
Heating circuit
Collector field
P1
: Solar circuit pump
P2
: Cylinder charge pump
P3
: Heating circuit pump
P4
: Buffer discharge pump to heat potable water
P5
: Circulation pump
Vm
: Mixing valve to maintain specific
min. return temperature
HKM : Heating circuit mixing valve
Hot
water
Cold
water
Circulation
PWT
Vu2
B
AB
A
T5
Vr
A
AB
B
A
AB
B
Vu1
P6
RATIOfresh
P2
P3
P5
RATIO-H
P
G
P1
CIRCO
P4
Ta
Ttw
RATIO-H
P
G
SUNG
O
Hot water
Cold water
Circulation
T-Storage
Buffer cylinder 2
Buffer cylinder 1
P1
: Solar circuit pump
P2
: Secondary circuit pump
P3
: Buffer discharge pump to heat potable water
P4
: Cylinder charge pump
P5
: Heating circuit pump
P6
: Circulation pump
Vu1
: 3-way-valve, switching solar charging
Vu2
: 3-way-valve, switching solar charging parallel with Vu1
Vr
: 3-way-valve, return flow increase
Collector field
Solar controller
Oil or gas
heating boiler
Heating circuit
Содержание RATIOfresh 250
Страница 25: ...EN RATIOfresh 250 400_TI MA 0809 11214900 25 ...
Страница 26: ...26 EN RATIOfresh 250 400_TI MA 0809 11214900 ...