4. Schematic Diagram of the Suntrap Solar Hot Water System (Electric Boost)
10
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Schematic Diagram of the Suntrap Solar Hot Water System (Gas Boost)
Solar
Pump
Solar
Control
Unit
Solar
Collector
Solar
Collector
Hot Water Out
to taps
Tank
temperature sensor
Pump
Control
Connection
Solar Hot Water Out
Non Return Valve
and Purge Valve
(G)
F
E
J
U
H
Solar
temperature
sensor cable
850 kpa Pressure and
Temperature Relief Valve
Solar Tank 500 kpa Pressure Limiting Valve
Air Vent
K
L
M
Cold Water in
Solar
recycle
Electrical
supply for
heating element
O
Solar Collector outlet connection
Solar Collector inlet connection
Solar
Collector
N
Either one, two or three Solar Collectors,
depending on system
Tempering
Valve
D
Domestic electrical supply
Expansion Control Valve
DuoValve (on/off and one way)
Tank temp
receptacle
Shut-off ball valve
S
T
C
Use copper Tee
G
Cold Water in
V
Blanking Plug
Solar Collector temp receptacle
P
Solar Hot
water tank
R
Solar Hot
Water tank
Solar
Pump
Solar
Control
Unit
Solar
Collector
Solar
Collector
Hot Water Out
to taps
Tank
temperature sensor
Pump
Control
Connection
Solar Hot
Water Out
Non Return Valve
and Purge Valve
(G)
F
E
J
G
H
Solar
temperature
sensor cable
850 kpa Pressure and
Temperature Relief Valve
Solar Tank 500 kpa Pressure Limiting Valve
Air Vent
K
L
M
Cold Water in
Electrical
supply
Cold
Water in
Solar
heating
recycle
Solar Collector outlet connection
Solar Collector inlet connection
Solar
Collector
N
Either one, two or three Solar Collectors,
depending on system
Tank temp receptacle
Outlet B
Inlet A
Bosch Gas Booster (21E/26E)
Solar Transfer
Valve (STV)
Tempering Valve
50
50
Bolt Gas Booster to Tank if possible
P
Outlet C
D
Solar recycle
Expansion Control Valve
DuoValve (on/off and one way)
Shut-off ball valve
C
T
Use copper Tee
S
U
V
Blanking
Plug
Solar Collector temp receptacle
R
Gas Booster
Water In
Gas Booster
Hot Water Out
