gledhill TEC140-OV Installation & Servicing Instructions Manual page 33

Store stat
ON OFF
C 1 2
S1 S2
1 2 3 4 5 6
Or
Gr Gr
an
G/
Br
ey ge ey
Bl
Y
S2 L N E S1 S2
ng Hot water heating
e Zone valve
Solar controller
S3 E N R1 N
7 8 12 13 14 15 16 17 18 19 20
E C 1 2
on off
Boiler hold off pipe thermostat
Type LL641B1012
Temperature range: 50 – 95°C
Typical thermal store
temperature set point 75-77°C,
must be set at a temperature
which prevents the contents
of the thermal store exceeding
100°C. See page 26 for further
guidance. Installer must set the
thermostat correctly during
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
INSTALLATION
Solar panels
R1 N L
Solar
pumping
station
Boiler hold off pipe thermostat
Type LL641B1012
Temperature range: 50 – 95°C
Typical thermal store
temperature set point 75-77°C,
must be set at a temperature
which prevents the contents
of the thermal store exceeding
100°C. See page 26 for further
guidance. Installer must set the
thermostat correctly during
commissioning.
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
Pump at pre-set temperature limit
Page 33
PRV
S1
Torrent ECO SOL
S3
P1
S2
S1 : Solar flow temperature sensor
S2 : Solar zone store temperature sensor
S3 : Store overheat temperature sensor/Thermostat
WIRING DIAGRAM