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7
WATER CIRCUIT
TYPICAL WATER SYSTEM SCHEMATIC
4
Outlet
11
4
5
12
4
Inlet
Solar collector
1
Storage cylinder
2
Collector probe
3
Disconnect valves
4
Non-return valve
5
Temperature gauge
6
8
Vent valve
7
Safety valve
8
Pressure gauge
9
Drain
10
Expansion vessel
11
Pump
12
Flow regulator
13
Flow meter
14
Vent cock
15
Manual bleed valve (accessory)
16
Water softener filter
17
18
Pressure reducer
Mixer valve
19
b
B
IDRA N DS
thout a boiler heating pump. A suitably rated pump
must be provided and installed separately. Flow rate
from the solar collector circuit depends on the type
and number of collectors installed. For further infor-
mation, consult the manual for the collectors.
b
The domestic hot water system MUST INCLUDE an
expansion vessel, safety valve, automatic vent valve
and storage cylinder drain cock.
b
Safety valves must be connected to a suitable col-
lection and drain system. The manufacturer declines
all responsibility for damage caused by water esca-
ping from safety valves.
RC
MC
2
4
10
11
storage cylinders are delivered wi-
15
16
UAC
M
3
19
4
12
5
4
RL
4
SB
18
4
17
4
8
10
Domestic hot water outlet
UAC
Domestic cold water inlet
EAF
Outlet from boiler
MC
Return to boiler
RC
Collector outlet
M
Collector return
R
DHW circulation
RL
Storage cylinder drain
SB
Note! The above schematic is purely indicative.
b
The choice of system components and the method
of their installation are left up to the heating engineer
installing the system. Installers must use their exper-
tise to ensure proper installation and functioning in
conformity to all applicable legislation.
b
Circuits filled with anti-freeze must be fitted with water
disconnectors.
b
If the water supply is unsoftened, avoid setting the
maximum temperature of the storage cylinder above
60°C, since higher temperatures can lead to the for-
mation of more lime scale and consequently poorer
thermal exchange efficiency.
b
Make sure that the storage cylinder is full of water
before starting up the solar heating system.
1
1
R
14
4
EAF
7
8
9
10
M
4
11
°C
6
5
12
4
13
4
Water control
system
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