Description
Replacement boiler temperature sensor PTC KTY 81-210 for Raychem HWAT-ECO V4
The temperature sensor must be connected to a single or master unit only. Connect both wires of the sensor to the TEMP terminal in the unit, see Fig. 4. The sensor wires do not have a special polarity. To connect a wire use a screwdriver to push down the orange tab on the side of the terminal. Put the wire into the hole and release the orange tab. The sensor should be connected as near as possible to the boiler.
The metal tabs can be folded around the hot water output pipe. Use the aluminium tape (included) to attach the sensor to the pipe. The sensor and at least 200 mm of the sensor cable should be covered by insulation. Be careful not to install the heating cable too close to the sensor, keep a clearance of at least 200 mm. The standard temperature sensor cable can be extended up to 100 meter. The extension cable should have a basic insulation of 500 V and a solid core of at least 0,75 mm² (@ 100m).
