Instruction of SR81 Split Pressurized Solar Hot Water System
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allocated to output R1.
4. When a output is used to control a device without pump speed control (e.g. to control a
motored valve), then the pump speed of the corresponding relay should be set with a value
of 100% or set the control type is ONOF to deactivate the pump speed control function.
Pump on/off ( standard pump control
mode without pump speed control)
Pulse control of standard pump
(through semiconductor relay to
trigger pump)
0-10V signal control pump speed