SR258 Solar Controllers for Split Pressurized Solar Water Heating System

• After-sales Service: Technical Support
• Warranty: 1 Year
• Condition: New
• Certification: API, ISO, CB, CE
• Application: Collector Controller, Water Heater Controller, Solar System Controller, Solar Working Station
• Rated Voltage: 110-240V
• Model NO.: SR258
• Transport Package: Carton
• Specification: 32X24X7 cm
• Origin: Jiangsu, China
• HS Code: 9032899099

Product Description

SR81/SR868 3000W Solar Controllers for Split Pressurized Solar Water Heater

1. Produuct Introduction

1.1 Overview

• 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.

1.2 Applications Capacity

• 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

1.3 Main functions

• LCD---display

• CLK---time setting

• THET---Timed auxiliary heating

• CIRC---water-side circulating pump three-time temperature/time control function

• LOAD---water tank heating setting

• COL---collector function

• OCEM---heat collector emergency shutdown function

• OCCO---collector cooling

• OCMI---the lowest temperature of the collector

• OCFR---heat collector antifreeze function

• PUMP---Water pump control mode (high efficiency pump speed control)

• COOL---cooling function

• OSTC---water tank cooling

• OHDP---heat transfer

• MAN---manual function

• BLPR---blocking protection

• OTDI---high temperature sterilization function

• FS---Flow monitoring and pump idling protection

• UNIT---Conversion of Celsius and Fahrenheit

• BEEP---Buzzer fault alarm function

• RET---reset

• PASS---Password setting

• M.H---manual heating

• Holiday function

• Screen Protection

• Trouble Protection

• Trouble Checking

1.4 Delivery scope

Components	Quantities	Remarks
Controller	1pc	SR258
Operation manual	1pc
PT1000 sensor	1pc	∅ 6*50mm,cable length 1.5mm
NTC10K	2pcs	∅ 6*50mm,cable length 3m
Accessory bag	1pc
Power cord	1pc

 

2. Technical Parameters

2.1 Technical parameters

Parameter	Value
Size of Controller	205mm*150mm*46mm
Power supply	AC100~240V 50~60Hz
Power consumption	< 2.5W
Measure accurate	± 2ºC
Measure scope of collector sensor	-10~220ºC
Measure scope of tank sensor	0~110ºC
Available power of R1 electrical themal trace	< 1A
T1	Collector:1*PT1000,≤ 500ºC(Sillicon cable ≤ 280ºC)
T2,T3	NTC10K,B=3950,≤ 135ºC(PVC cabke ≤ 105ºC)
T4,T3	Optional sensor:                            NTC10K,B=3950,≤ 135ºC(PVC cabke ≤ 105ºC)
Amblent temperature	-10~50ºC
Water proof grade	IP41

2.2 Optional accessories

2.2.1 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:

2.2.2 FRT  digital flow meter

3. Product Installation

3.1 SR258C Installation diagram