1. Product Description
SR258 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.
Max.number of collectors:1
Max.number of storage tanks:1
Max.number of temperature sensor:5
Max.number of circulation pump or valve:3
Max.number of electronic flowmeter:1
Max.number of electromagnetic relays:4
Max.number of auxiliary electric heating:1
THET---Timed auxiliary heating
CIRC---water-side circulating pump three-time temperature/time control function
LOAD---water tank heating setting
OCEM---heat collector emergency shutdown function
OCMI---the lowest temperature of the collector
OCFR---heat collector antifreeze function
PUMP---Water pump control mode (high efficiency pump speed control)
OSTC---water tank cooling
OTDI---high temperature sterilization function
FS---Flow monitoring and pump idling protection
UNIT---Conversion of Celsius and Fahrenheit
BEEP---Buzzer fault alarm function
2. Technical Parameters
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 ~ 50°C Water proof grade: IP43.
3. Product Installation
Operation Manual of the Intelligent Controller SR258