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Bosch Greentherm T9900 SE 160 Installation And Operating Instructions Manual page 73

Indoor residential tankless water heaters, 160 000/199 000 btu- natural gas 160 000/199 000 btu - liquefied petroleum lp gas
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Electrical diagram
[1] Ionization sensor
[2] Fan
[3] Ignition electrode
[4] Power supply
[5] Connection for anti freeze kit
[6] Connection for recirculation pump
[7] Connection for remote control
[8] Gas valve - Modulation
[9] Water bypass valve
[10] Electrovalve 3
[11] Electrovalve 1
[12] Electrovalve 2
[13] Gas valve - Solenoide safety
[14] Thermofuse
[15] Water flow sensor
[16] Exhaust temperature sensor
[17] Exhaust temperature sensor - Between chambers
[18] Water outlet bypass temperature sensor
[19] Cabinet temperature sensor
[20] Water outlet HC temperature sensor
[21] Water inlet temperature sensor
[22] Tank temperature sensor
[23] Water valve
[24] Cascading In/Out
[25] Touch control display
Greentherm T9900 SE/i – 6 720 813 635 (2019/03)
73

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Greentherm t9900 se 199Greentherm t9900 se/i 199