Replacement Solar Hot Water Controller ISC-AC2-A2F to suit Rinnai Systems using this type of controllerThis controller has two temperature sensors which connect to the controller via short flying leads. The connectors ensure that the sensors cannot be connected to the wrong flying lead. The long sensor goes to the top of the collector panel and the short lead goes to the bottom of the storage tank.Panel temperature must be sensed as close as possible to the top of the panel, either by inserting the sensor into a thermowell in the plumbing fitting or by placing the sensor on the pipework as close as possible to the outlet from the top of the panel.Tank temperature must be sensed as close as possible to the bottom of the tank, either by inserting the sensor into a thermowell in the bottom of the tank or in the plumbing fitting or by placing the sensor on the pipework as close as possible to the outlet from the bottom of the tank, where water is taken to the panel via the pump.
Put the end of the sensor in direct contact with the temperature to be sensed. On pipework it can be held in place with tape.Where possible, insulation should be placed over the end of the sensor and approximately 100mm of cable behind the end of the sensor to ensure that the sensor reaches the temperature it is trying to measure.If using silicone sealer, only use those with Neutral Cure. Sealers that smell of ascetic acid may cause the sensor leads to be come brittle and crack.Setup and Adjustment
No setup or adjustment is required for these controllers. Frost protection by circulation is enabled by default. This method of frost protection provides some protection against frost damage, however freezing can still occur in some circumstances, such as very cold conditions or dead spots in the panel where water does not circulate.
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