Water Inlet Assy; Water Temperature Sensors; Box Temperature Sensor - Bosch GWI-N Series Training And Service Information

4.7

Water Inlet Assy

The inlet water valve contains the water connection of 1/2" that integrates also the filter mesh or for high
output models is ¾" and contains screw to access filter cartridge.
4.8

Water temperature sensors

The outlet and inlet water temperature is measured by a 10kΩ NTC (See table 15). Both NTC are equal, but
connected to different cable colors (blue wires to inlet water / red wires to outlet water). In the high output
range the NTC's are immerged and as well equal but connected to different cable colors (blue wires to inlet,
red to heat exchanger / orange to outlet).
4.9

Box Temperature sensor

The Box air temperature is measured by a 220kΩ NTC (See table 14) and is assembled on the control unit
back panel, in order to monitor the temperature inside of the room sealed box.
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Pict.26 – Inlet Water Valve for indoor / outdoor
Contact Type (4000S)
Pict.27 – NTC Temperature sensor
6 720 814 719 SM FP_Australia 2017/04 EN
Immerged Type (Optiflow)