gledhill Torrent GreenHeat TGH140-OV Design, Installation & Servicing Instructions page 33

Store stat
ON OFF
1 2
S1 S2
1 2 3 4
Or
Gr Gr
an
G/
Br
ey ge ey
Bl
Y
S2 L N E S1 S2
ng Hot water heating
Zone valve
Solar controller
S3 E
5 6 7 8 12 13 14 15 16 17 18 19 20
E C 1 2
on
off
Boiler hold off pipe thermostat
Type LL641B1012
o
Temperature range: 50 – 95
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
Solar panels
N R1 N R1 N L
pumping
station
Boiler hold off pipe thermostat
Type LL641B1012
Temperature range: 50 – 95
NOTE
With some solar controllers do not have overheat sensor, S3, as shown above
In this case the mechanical overheat thermostat (S3) may used and wired as
shown in figure 4.4 to protect the store from over heating by stopping the solar
C
Pump at pre-set temperature limit
Page 33
INSTALLATION
PRV
S1
Solar
P1
o
C
S1 : Solar flow temperature sensor
S2 : Solar zone store temperature sensor
S3 : Store overheat temperature sensor/Thermostat
WIRING DIAGRAM
Torrent GreenHeat SOL
S3
S2