Instruction of SR81 Split Pressurized Solar Hot Water System
Page 28 of 59
around the freezing point only for a few days.
OTCO Tube collector function
This function is designed for the system in which the position of collector sensor is not ideal;
purpose is to improve the system efficiency (for example for system use tube collector), this
function runs just within a set time section, controller will intermittent trigger solar pump (R1)
to push the hot water from tube collector to the position of sensor, to avoid the delay
measuring temperature.
If the running time is set over 10 seconds, then within the first 10seconds, pump runs at 100%
speed, and at the remain time, pump runs at its lowest pump speed.
If the sensor of collector is damaged, then this function is deactivated automatically.
Collector emergency
shutdown function on/ff
Temperature of collector
emergency
shutdown(hysteresis 10K)
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