Solar Controllers

For Split Pressurized Solar Water Heating System

SR91

Application capacity:

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

Main technical data:

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

Rated impulse voltage: 2.5KV

Housing:Plastic ABS

Mounting:Wall mounting

Operation: 10 push buttons at the front cover

Protection type: IP40

1500W or 3000W/4000W of electrical heater should be remarked in the purchased order.

Dimension of display: 120*120*23mm

Dimension of controller board with 1500W output: 200*140*43mm

Dimension of controller board with 3000W/4000W output: 218*165*55mm

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

Main functions:

1.Timing heating

2.CIRC DHW Circulation pump controlled by temperature or by time

3.PWD Password

4.LOAD tank heating

5.COL Collector function

6.COOL Cooling function

7.AUX Auxiliary function

8.MAN Manual operation

9.BLPR Blocking protection

10.OTDI Thermal sterilization function

11.FS Flow rate monitoring and pump dry-running protection

12.UNIT C-F switch

13.RET Reset

14.PASS Password set

15.Manual heating

16.ECO Economic mode

17.DHW circuit pump triggered manually

18.On/Off controller

19.Holiday function

20.Manual circuit function

21.Memory protection during power failure

22.Screen protection

23.Trouble checking

System:

Terminal allocation of controller for electrical heater of 1500W

Terminal allocation of controller for electrical heater of 3000W/4000W

Heat transferring by external pump:

AH Thermostat function