A
B
C
D
TM072177
Fig.
Power head positions
4.4.3 Installing the temperature sensor
To fulfill the "California water heater regulations
2017 - Title 24", install a temperature sensor
HWR-D in proximity to the pump. If the system is
to be operated without the temperature sensor,
skip this installation step.
Use thermal compound (heat-
conducting grease) between the
temperature sensor and the pipe
system. Thermal compound is not
included.
Use only one temperature sensor per system.
Follow these steps to install the temperature
sensor:
1.
Remove the lid of the temperature sensor
case.
2.
Remove the pull-tab from the end of the AA
lithium battery in the sensor case. The
temperature sensor will start up.
3.
Mount the temperature sensor on a straight
section of pipe. Position the temperature
sensor to have the best possible contact with
the pipe surface. Apply thermal compound
(heat-conducting grease) to the back of the
sensor case as shown in the figure below.
Loosely position the pipe clamp strip around
the end of the temperature sensor.
4.
Tighten the pipe clamp strip. Keep the clamp
on the opposite side of the pipe from the
temperature sensor.
a. To pair the pump and the temperature
sensor: Press and hold the connect button
on the pump for 2 seconds. The blue
connect symbol on the pump will flash.
Then press and hold the connect button on
the temperature sensor for more than 2
seconds. The temperature sensor's
internal blue LED will flash. After
successful pairing of the pump and the
temperature sensor, the blue light will be
on continuously for 5 seconds on both
devices. If the pairing fails, the connect
symbol will flash red for 5 seconds on the
pump. If pairing fails, retry the pairing
procedure.
5.
Replace the lid of the temperature sensor
case.
6.
Tighten the two end screws on the
temperature sensor case. For best
performance, fully tighten the screws but do
not overtighten.
TM072159
Fig.
Removing the screws from the lid
TM072158
Fig.
Removing the lid and the pull-tab
TM072157
Fig.
Apply a small area of thermal
compound to the back of the sensor
case where shown
Pipe clamp strip
Clamp
TM072161
Fig.
Positioning the clamp
8
English (US)
