Solar Water Heaters > SR81 Solar Controller [SR81]
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SR81 Solar controller SR81 Solar controller
SR81 Solar Controller SR81 Solar Controller
solar controller set-up solar controller set-up
SR81 SR81

Item Description

SR81 Solar Controller


Temperature measurement accuracy:0.1C
10 push buttons at the front cover.
5 variants version can be optional
With separate keypad

Main technical data:

Max.number of collectors:1
Max.number of storage tanks:1
Max.number of relays:4
Max.number of sensors:5
Max.number of visualization application system: 1

FRT:1* Rotary vane type electron flow meter
Size of Keypad:120mm x 120mm x 18mm
Size of Controller(1.5KW version): 187mm x128mm x46mm
Size of Controller(3KW version): 218mm x165mm x55mm
Size of Controller(4KW version): 218mm x165mm x55mm
Power supply: AC100-240V,50-60Hz. .  
Power consumption: < 2.5W
Rated impulse voltage: 2.5KV
Housing: Plastic ABS
Protection type: IP41
Mounting: Wall mounting
Operation: 10 push buttons at the front cover.
Accuracy of temperature measuring: ? 0.1oC
Range of collector temperature measuring: -10oC ~220oC
Range of tank temperature measuring: 0oC ~110oC
Suitable power of pump: 3 pump possible to be connected  
Suitable power of HK (backup heating):
1pc(1.5KW version) ?1.5KW
1pc(3KW version) ?3KW
1pc(4KW version) ?4KW
Inputs: 5 sensors,
1pcs*Pt1000 sensor (?500oC) for collector (silicon cable?280oC),
4pcs*NTC10K, B3950 sensor (? 135oC) for tank, (PVC cable ?105oC),
1*FRT Rotary vane type electron flow meter
Outputs: 4 relays, for circulation pump and backup heating
3*Electronmagnetic relay, Max.current 2A
HK relay(1.5KW version):10A
HK relay(3KW version):15A
HK relay(4KW version):20A
Ambient temperature: -10oC ~ 50oC.
Water proof grade: IP41

Main functions:

DATE---Date setting
Timed heat---backup heating
Circle---Hot water circulation
LOAD---Setup Loading tank1
PUMP---Pump control mode
COOL---Cooling function
AUX---Auxiliary function
MAN---Manual mode
BLPR---Blocking protection function
OTDI---Thermal disinfection function
FS---Flow meter type selection.
UNIT---C-F unit switch
RST---factory setting
PASS--- password set
Holiday function
Screen Protection
Trouble Protection
Trouble Checking

SR81 Solar Controller
SR81 Solar Controller
• Intelligent Solar Controller
• Max: 1 Collector, 1 Tanks
• For Closed Loop Solar Water Heater Systems
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