5-5 Temperature sensor 5-6 Heating Water Level Sensor
1. Lock all valves of pipes under the boiler. 1. Lock all valves of pipes under the boiler
2. Remove the connector of temperature sensor 2. By turning left, separate the Heating water level
housing from the controller. sensor from the top of heat exchanger.
3. By turning left, pull out the temperature sensor from
the heat exchanger.
5-7 Gas valve
1. Remove the nuts of gas pipe with spanner. 1. Pull out the connectors from the gas valve.
2. With spanner, dismentle the gas valve and
gas pipe.
3. With + driver, separate the gas valve from left
and right nipple after unscrewing.
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