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How to connect tank unit thermistor cable
The terminal block & sensor cover are attached to the tank. Use a hex driver or socket
to remove screws & sensor cover.
Cut the thermistor cable and conduit to the required lengths. The thermistor cable and
conduit length are designed to cover the maximum allowable distance between the
tank unit and heat pump unit (four meters). If the units are located closer than four
meters the thermistor cable and conduit may be cut to the desirable length (Figure 11).
Reveal the grey cable inside the black conduit. Expose the 2 thermistor wires (black &
white).
Note that wires from thermistor in tank are black & black.
Strip the 2 wires ready for the terminal block & remove the fine mesh shield (or tape
over).
Place the wires into the terminal block (in either direction), tighten screws & pull wires
to make sure they're firm in the block.
Please put the terminal block cover back onto the tank unit and tighten the screws.
Fit a 15mm saddle on conduit where it enters base of cover to prevent conduit being
removed from box.
Cable ties the conduit to the hot line coming to the tank from side of heat pump unit.
Figure 11: Connect tank unit thermistor cable
Terminal
block
Tank unit
Thermistor
cable
Gasket
Conduit
connector
Conduit
Sanden Heat Pump – Installation Manual
Page 13 of 32
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