Solar Controllers
For Split Pressurized Solar Water Heating System
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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