Rinnai REU-V1620WG Service Manual page 8

Sensors and Safety Functions
•
Hot Water Delivery Thermistor:
temperature).
• Monitors combustion characteristics inside the combustion chamber. If the flame fails, gas
Flame Rod:
supply is stopped.
• Situated on the heat exchanger, gas supply is stopped when water temperature
Overheat Switch:
reaches 97ºC for a number of seconds.
• Situated on the heat exchanger, electrical power supply is stopped if the temperature
Fusible Link:
exceeds 129ºC.
•
Water Pressure Relief Valve:
2060 kPa, closes at 1470 kPa.
• (3A glass fuse) prevents against power surges.
Electrical Fuse:
• prevents against over-current.
Surge Protector:
•
Boil Dry Prevention:
•
Combustion Fan Speed Sensor:
is stopped.
•
Temperature Cutout:
temperature for a number of seconds, the gas supply is stopped.
Combustion Specifications
Refer to dataplate on the appliance.
REU-V1620WG / REU-V1620WB / REU-V1620WS / REU-V2024WG - 3 -
Measures hot water temperature at the outlet valve (i.e. the 'mixed'
Safeguards the water circuit against excessive inlet pressure. Opens at
If water flow sensor detects no flow, gas supply is stopped.
In case of combustion fan defect (no rotation of fan blades) gas supply
If the delivered hot water temperature rises above the required delivery
Issue 1 - 14/04/09 ©Rinnai