SR501 Solar Controllers for Compact Non Pressurized Solar Water Heater

SR501 microcomputer automatic controller is used for intelligent control of Integrated non-pressure solar water heater. It is developed with the latest NEC high-performance single-chip microcomputer and realizes intelligent control. All devices adopt industrial grade standard and can operate freely in cold, high temperature and humid environment. At the same time, the clock chip is used to make the time control accurate. The controller LCD liquid crystal display, beautiful appearance, stable and reliable performance, easy installation, is the most ideal accessory product for Integrated non-pressure solar water heaters.

The SR501 solar controller can display the water temperature and water level; control the water tank water supply through water temperature, water level and time setting; and can control the electric heating and other ancillary equipment to fully control the solar water heater. The list of more features is as follows:

1.Time setting
2.Timing filling and heating with three time-sections
3.Temperature controlled water filling function
4.CTH Thermostat heating function
5.LWPR Low water pressure protection
6.CWL constant water level filling function(preset 100% water level of tank)
7.PUMP water filling pump
8.TCYC Setting the temperature/flow for DHW pump running within three time-sections
9.AH Automatic thermostat function
10.OTF Timer function
11.TKRR Tank high temperature protection function
12.CFR Tank anti-freezing protection
13.LWS Preset the water level of water filling when tank is lack of water
14.LWSD delay time of water filling when tank is lack of water
15.OTDI Thermal disinfection
16.UNIT Celsius degree and Fahrenheit unit switch
17.BEEP Beeper error warning
18.Manual water filling
19.Compulsive water filling function
20.Manual heating
21.Manual DHW circulation
22.Factory reset manually function
23.Sensor sensitivity adjustment
24.Pipe anti-freezing protection function
25.View the measuring value
26.Overflow protection
27.High temperature protection of collector tube
28.Memory protection
29.Screen protection
30.Trouble protection
31.Error code description

1.3 Packing list

• Power supply:AC100-240V,50-60Hz
• Power consumption:< 3W
• Accuracy of temperature measuring: ±1℃
• Range of tank temperature measuring: 0 ~100 ℃
• Outputs:4 electromagnetic relays
• Ambient temperature :-10℃ ~ 50℃
• Water proof grade:IP40

205mm×150mm×50mm

2.3 Optional accessories

3.1 SR501 installation diagram ia as follows: