Solar Controllers

For Split Pressurized Solar Water Heating System

SR258

Application 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:

1.Inputs: 1 * PT1000 temperature sensor input
              4 * NTC10K, B=3950 temperature sensor input
              1 * FRT rotary vane type electronic flow meter

2.Outputs: 2* Electromagnetic relay(R2/R3), maximum current 2A
                  1* Semiconductor relay (R1), maximum current 1A
                  1* Electromagnetic relay (HR), maximum current 10A

Note:

a).110VAC main supply: max. power 750W

b).230VAC main supply: max. power 1500W

1 * PWM variable frequency output (on/off switchable, 0-10V)

3.Functions: operating hours counter, tube collector function, thermostat function, pump speed control, external heat exchange, adjustable system parameters and optional functions (menu-driven), balance and diagnostics

4.Power supply: 100~240V, 50~60Hz

5.Rated impulse voltage: 2.5KV

6.Housing: Plastic ABS

7.Mounting: Wall mounting

8.Operation: 6 push buttons at the front cover

9.Protection type: IP41

10.Ambient temperature: 0~40 °C

11.Dimensions: 187*128*46mm

Note:there are 4 inputs for NTC10K, B=3950 temperature sensor, but only 2 sensors are included in standard delivery list, the other two should be purchased separately by customer if necessary.

Main functions:

1.CLK Time setup

2.THET Timing heating

3.CIRC DHW circulation pump controlled by temperature or by time

4.PWD Password

5.LOAD tank heating

6.COL Collector function

7.PUMP Pump R1 control mode

8.COOL Cooling function

9.AUX Auxiliary function

10.MAN Manual operation

11.BLPR Blocking protection

12.OTDI Thermal disinfection function

13.FS Flow rate monitoring and pump dry running protection

14.UNIT C-F switch

15.PASS Password setup

16.M.H. Manual heating

17.Holiday function

18.Memory function during power failure

19.Screen protection

20.Trouble checking

Standard system:

Heat transferring by external pump:

AUX Auxiliary function