SR81 Solar Water Heater Controller for Split Pressurized Systems

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

• 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 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: SR802 When 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