Figure 15 Solar installation for hot water heating and heating support. System solution in conjunction with oil or gas boiler, buffer cylinder RATIO
HP G and freshwater station RATIOfresh. Water is heated using an electronically controlled flow process. The controller of the freshwater station
maintains a constant withdrawal temperature and especially low buffer cylinder return temperatures. Solar energy for room heating is utilized by
raising the return temperature of the heating circuit when the temperature in the buffer cylinder is sufficiently high.
Figure 16 Solar installation for water heating and space heating support. System solution with gas boiler, open fireplace with heating inset, RATIO
HP Buffer Storage, fresh water station RATIOfresh and a floor heating circuit. Hot water preparation is done by electronically controlled flow-
through method. The fireplace heats the upper part of the buffer storage, solar energy can heat the entire volume of the storage cylinder. When the
temperatures in the storage are high enough, the return flow of the heating circuit is directed through the storage via the switching valve V1. The en-
ergy of the buffer storage is utilized for space heating. The solar controller additionally controls loading of the buffer via the fireplace inset.
Tvl
SUNG
O
Vu
Ta
Ttw
P1
P1
CIRCO
P4
P3
Vr
B
A
AB
P2
P5
RATIOfresh
RATIO-H
P
G
Heating circuit
Solar controller
T-storage
Collector field
Oil or gas
heating boiler
Cold water
Hot water
P1
: Solar circulation pump
P2
: Buffer discharge pump to heat potable water
P3
: Cylinder charge pump
P4
: Heating circuit pump
P5
: Hot water circulation pump
Vr
: 3-way switching valve
(temperature increase heating return)
Vu
: 3-way switching valve
(return switching circulation mode)
Circulation
RATIO-H
P
G
RATIOfresh
P2
P5
P3
M
HW
V2
RV
V3
M1
SU
NGO
P1
P1
CIRCO
P4
V1
B
A
AB
Circulation
Cold water
Hot water
P1
: Solar circulation pump
P2
: Buffer discharge pump to heat potable water
P3
: Cylinder charge pump
P4
: Heating circuit pump
P5
: Hot water circulation pump
V1
: 3-way switching valve
(Hot water aux. heating or space heating)
Heating circuit
Gas boiler
Fireplace with
heating inset
V2
: 3-way switching valve
(temperature increase heating return)
V3
: Mixing valve for keeping a min. return flow temperature
M1
: Heating circuit mixing valve
HW
: Hydraulic compensator
RV
: Regulating valve
Solar controller
Collector field
Subject to modifications, errors excepted · © Wagner & Co, 2008 · www.wagner-solar.com
28
WAGNER & CO · Zimmermannstraße 12 · D-35091 Cölbe/Marburg ·
☎
+49 6421 80 07-0 · Fax 80 07-22
Содержание RATIOfresh 250
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