SR81 Solar Water Heater Controller for Split Pressurized Systems, used for Split Solar Water Heating System. The controller is developed using the latest Dutch NXP high-performance single-chip microcomputer, realizing intelligent control and other more sophisticated features. All similar devices should adopt industrial grade standard, can run freely in cold, high temperature and humid environment With the clock chip at the same time, the timing control is accurate. The controller LCD liquid crystal display, beautiful appearance, stable and reliable performance, easy installation, become the most ideal accessory product for solar water heaters. The controller is available in three Load supply Ratings; 1500W, 3000W, and 4000W.
SR81 Solar Water Heater Controller for Split Pressurized Systems Overview
SR81 is an upgraded version of SR868C8.
SR81/SR868 is used in a split pressurized solar water heater system.
- Intelligently controlled by the latest high-performance microcontroller from NXP.
- All devices use industrial-grade standards to operate in cold, high-temperature, and humid environments, while using a clock chip for precise timing control.
- The controller is LCD type, with beautiful appearance, stable and reliable performance, easy to install, as the most ideal accessory product for split pressure solar water heater.
SR81 Solar Water Heater Controller for Split Pressurized SystemsApplications capacity
Max.number of collectors:10
Max.number of storage tanks:1
Max.number of relays:4
Max.number of sensors:5
Max.number of visualization application system: 1
SR81 Solar Water Heater Controller for Split Pressurized Systems Main functions
- DATE—Date setting
Timed heat—backup heating
Circle—Hot water circulation
LOAD—Setup Loading tank1
COL—Collector1
PUMP—Pump control mode
COOL—Cooling function
AUX—Auxiliary function
MAN—Manual mode
BLPR—Blocking protection function
OTDI—Thermal disinfection function
FS—Flow meter type selection.
UNIT—C-F unit switch
RST—factory setting
PASS— password set
Holiday function
Screen Protection
Trouble Protection
Trouble Checking
SR81 Solar Water Heater Controller for Split Pressurized Systems Packaging Content
SR81 Solar Water Heater Controller for Split Pressurized Systems Technical Parameters
2.2 Optional accessories used with SR81 Solar Water Heater Controller for Split Pressurized Systems
Electromagnetic relay : SR802,can control electric heating of ≤4000W.
 Contactor unit of high power: SR802When user selects electrical heater as back-up device, we recommend using SR802 unit connecting controller and electrical heater. Technical data of SR802 Dimension: 100mmx100mmx65mm Power supply:180V～264V/AC 50/60Hz Suitable power: ≤ 4000W Available ambient temperature: -10 ~ 50oC Water proof grade: IP43 |
SR802 Connection Diagram:
Installation diagram
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