220V/110V Degital Controller Split Pressurized Solar Water Heater

SR81Q Intelligent Solar Water Heater Controller for Separated Pressurized Solar System​

Introduction:

Suitable for separated pressurized solar system

Old SR868C8Q updated version
Temperature measurement accuracy:0.1C
10 push buttons at the front cover.
With separately keypad

Main Technical data:

APPLICATIONS CAPACITY
Max.number of collectors:1
Max.number of storage tanks:1
Max.number of relays:4
Max.number of sensors:6
Max.number of visualization application system: 1
FRT:1* Rotary vane type electron flow meter
VFS:1*Grundfos flowmeter sensor
Signal port for HE pump: IPWM1

TECHNICAL DATA
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
Inputs: 6 sensors,
1pcs*Pt1000 sensor (≤500oC) for collector (silicon cable≤280oC),
5pcs*NTC10K, B3950 sensor (≤ 135oC) for tank, (PVC cable ≤105oC),
1*FRT Rotary vane type electron flow meter
1*VFS: Grundfos flowmeter sensor
Outputs: 4 relays, for circulation pump and backup heating
1*Semiconductor relay, Max.current 1A
2*Electronmagnetic relay, Max.current 2A
1*Electronmagnetic relay, Max.current 2A
1*Potential-free extra-low voltage relay(on/off signal)
1*PWM variable frequency output(switchable 0-10v)
Ambient temperature: -10oC ~ 50oC.
Water proof grade: IP41

Main Functions:

System:

Nr. Button
1 Power indication lamp
2 “On/Off”
3 “Clock”
4 “Holiday”
5 “Manual Heating”
6 “Manual Circuit”
7 “Eco Mode”
8 “ESC”
9 “SET”
10 Upwards adjust “+”
11 Downwards adjust “-”
12 LCD Display screen