gledhill Torrent GreenHeat OV TGH140 Design, Installation & Servicing Instructions page 17

INSTALLATION
Normally Open
Control Stat 2
2 Port Valve
on off
L N E
C 1 2
L N E 1
C 1 2
ML N PL SL E
on
off
Normally Closed
Pipe Thermostat 1
2 Port Valve
Torrent GreenHeat with 'S' Plan heating system with typical solar heating system
WIRING DIAGRAM
CH & HW Programmer
Room thermostat
HW CH HW CH
OFF ON ON
OFF
N L 1 2 3 4 E 1
Br Br
2 3
1 2 3 4 5 6 7 8 9
Local 5
double A
pole
isolator
L N E SL L N E
boiler pump
L N E
Boiler wiring terminals
Mains supply
230VAC ~ 5 Amp
Page 32
Store stat
ON OFF
ON OFF
E C 1 2
2 3 4
Junction box
S1 S2
1 2 3 4
10 11 12
Or Or
Gr Gr
an an
G/ G/
Br ge ey Br ge ey
Bl Bl
Y Y
L N E S1 S2 L N E S1 S2
E N L
Central heating Hot water heating
Zone valve Zone valve
System pump
Solar panels
Solar controller
S3 E N R1 N R1 N L
5 6 7 8 12 13 14 15 16 17 18 19 20
Boiler hold off pipe thermostat
Type LL641B1012
Temperature range: 50 – 95
Thermal store temperature
E C 1 2
max 85°C, more typically
on
off
75-77°C. Installer must set the
thermostat correctly during
commissioning
Boiler hold off pipe thermostat
Type LL641B1012
o
Temperature range: 50 – 95 C
NOTE
Thermal store temperature
With some solar controllers do not have overheat sensor, S3, as shown above
max 85°C, more typically
In this case the mechanical overheat thermostat (S3) may used and wired as
75-77°C. Installer must set the
shown in figure 4.4 to protect the store from over heating by stopping the solar
thermostat correctly during
Pump at pre-set temperature limit
commissioning
NOTE
As part of system setup and commissioning, it is important that this boiler hold-off pipe thermostat
be adjusted to find the best setting for each individual installation.
Failure to do so will give under performance of either the boiler or the solar heating system
Page 33
INSTALLATION
PRV
S1
Torrent GreenHeat SOL
S3
Solar
pumping
station
P1
o
C
S2
S1 : Solar flow temperature sensor
S2 : Solar zone store temperature sensor
S3 : Store overheat temperature sensor/Thermostat
WIRING DIAGRAM