SR971,SR972 Solar station operation manual
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15
Output ports
Output R2
:electromagnetic relay, max. switching current 3.5A,
R2 ports wire connection:for tank thermostat function
Output R3
：
electromagnetic relay, max. switching current 3.5A,
R3 ports wire connection:for tank cooling function.
Output R4
：
electromagnetic relay, max. switching current 3.5A,
R4 ports wire connection:for hot water circuit pump function.
Output H1
：
electromagnetic relay , max. switching current 10A,
H1 connection ports: for eletrical heater
Note:
Solar pump (installed on solar station) is already connected with controller,
eletronmagnetic valve and sensor connections relay on the system you selected. Shielded
cable should be used.
eBUS interface
：
Temperature value display anywhere
（
optional
）
By using SR806 seperable display screen can display temperature and the operating status
of selected hydraulic system anywhere, though eBUS to connecte controlling part and
display screen.
Port 1 connected with red wire ( +12V)
Port 2 connected with white wire ( COM)
Port 3 connected with black wire ( GND)
6. Control operation description
6.1 Operation button
Set button exit/confirm upwards downwards
ON/OFF button clock manual heating holiday
