Solar Water Heater Controller SR258 with WIFI function

Introduce:

Temperature measurement accuracy:0.1C
Conventional/HE pump both available on

APPLICATIONS CAPACITY
Max.number of collectors:1
Max.number of storage tanks:1
Max.number of relays:5
Max.number of sensors:4
Max.number of visualization application system: 1
Signal port for HE pump:IPWM1
FRT:1* Rotary vane type electron flow meter

Main technical data:

Size of Controller: 187mm x128mm x46mm
Power supply: AC100-240V50-60Hz. .
Power consumption: < 2.5W
Rated impulse voltage: 2.5KV
Housing: Plastic ABS
Protection type: IP41
Mounting: Wall mounting
Operation: 6 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 ˂1500W .
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
2*Electronmagnetic relay Max.current 1A
1*Semiconductor relay Max.current 1A
1* Electronmagnetic relay Max.current 10A
1*PWM variable frequency output(switchable 0-10v)
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
COL—Collector1
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