SR81/Sr868 1500W Solar Controllers for Split Pressurized Solar Hot Water Heater

Product Description

SR81/SR868 1500W Solar Controllers for Split Pressurized Solar Water Heater

1. Produuct Introduction

1.1 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.

1.2 Applications capacity

• Max.number of collectors:1

• Max.number of storage tanks:1

• Max.number of relays:4

• Max.number of sensors:5

• Max.number of visualization application system: 1

1.3 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

1.4 Delivery scope

Components	Quantities	Remarks
Controller	1pc	SR81
Operation manual	1pc
PT1000 sensor	1pc	∅ 6*50mm,cable length 1.5mm
NTC10K	2pcs	∅ 6*50mm,cable length 3m
Accessory bag	1pc
Power cable	1pc

 

2. Technical Parameters

2.1 Technical parameters

Parameter	Value
Size of Keypad	120mm×120mm×18mm
Size of Controller	1.5KW version:187mm×128mm×46mm  3KW/4KW version:218mm×165mm×55mm
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	< 5000W
Available pump P2 can be controlled	pump power <200W
Available electrical heater can be controlled H1	1pc(1.5KW version)<1.5KW                          1pc(3KW version)<3KW                                1pc(4KW version)<4KW
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.

 

3. Product Installation

3.1 SR208C Installation diagram