Installation Guide for the SolaStat™-Plus-ET
Version 1.2 – July 2011
Page 10
M
OUNTING THE
S
ENSORS
Where to
mount the
Sensors
Correct mounting is critical to the success of the installation.
The sensors are the only way the
SolaStat
TM
-Plus-ET
can efficiently control
and protect the system. Please note:
1.
The 10m Roof Sensor (Labelled ‘ROOF SENSOR - connects to solar
collector) is best fitted into a metal immersion ‘pocket’ just inside the solar
collector in the hot water outlet pipe. Liberally apply heat transfer
compound between the sensor and the lining of the ‘pocket’. Sensor
should be sealed with neutral cure sealant and externally lagged. Also,
the cable should be insulated from the bare pipe. Heat transfer
compound is available from your distributor or Senztek Ltd.
BEWARE
:
Some collectors can exceed the 120ºC rating of a
standard sensor. In this case ensure a high temperature sensor is
used.
2.
The 2m Tank Sensor
(Labelled ‘TANK SENSOR’- connects to the top of
the hot water tank)
is best fitted into a metal immersion ’pocket’ in the
upper region of the hot water tank. Senztek also offer mounting solution
called an S3. For the SolaStat
TM
-Plus-ET, the position of the tank sensor
will establish the control point the energy transfer function works from. Of
course hot water rises so as this position cools any water hotter from
below this point will rise to take its place. If TOPOUT is required, caution
should be exercised to allow for stratification of hot water in the tank. For
Topout Adjustable Value in Installer Programming Mode, we recommend
a conservative value somewhat lower than the hot water tank
manufacturer’s maximum temperature. Liberally apply heat transfer
compound between the sensor and the lining of the ‘pocked’ or in the
case of the S3, against the copper foot.
3.
The 2m Inlet Sensor
(Labelled ‘INLET SENSOR’- connects to the bottom
of the hot water tank)
is best fitted into a metal immersion ’pocket’ in the
lower region of the hot water tank.
.
Continued on next page