SR81 Intelligent Controller For Split Pressurized Solar Hot Water System

SR81 Intelligent Controller for Split Pressurized Solar Hot Water System

A BRIEF DESCRIPTION

Old SR868C8 updated version
Temperature measurement accuracy:0.1C
10 push buttons at the front cover.
With separately keypad

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
FRT:1* Rotary vane type electron flow meter

TECHNICAL DATA

Size of Keypad:120mm x 120mm x 18mm
Size of Controller(1.5KW version): 187mm x128mm x46mm
Size of Controller(3KW version): 218mm x165mm x55mm
Size of Controller(4KW version): 218mm x165mm x55mm
Power supply: AC100-240V,50-60Hz. .
Power consumption: < 2.5W
Rated impulse voltage: 2.5KV
Housing: Plastic ABS
Protection type: IP41
Mounting: Wall mounting
Operation: 10 push buttons at the front cover.
Accuracy of temperature measuring: ± 0.1oC
Range of collector temperature measuring: -10oC ~220oC
Range of tank temperature measuring: 0oC ~110'C
Suitable power of pump: 3 pump possible to be connected
Suitable power of HK (backup heating):
1pc(1.5KW version)<1.5KW
1pc(3KW version) <3KW

1pc(4KW version) <4KW
Inputs: 5 sensors
1pcs*Pt1000 sensor (≤500'C) for collector (silicon cable≤280oC),
4pcs*NTC10K, B3950 sensor (≤ 135'C) for tank, (PVC cable ≤105'C),
1*FRT Rotary vane type electron flow mete

Outputs: 4 relays, for circulation pump and backup heating
3*Electromagnetic relay, Max.current 2A
HK relay(1.5KW version):10A
HK relay(3KW version):15A
HK relay(4KW version):20A
Ambient temperature: -10'C ~ 50'C.
Water proof grade: IP41

Main Function

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

Packing list

1 x SR81 controller

1 x accessory bag

1 x user manual

1 x PT1000 temperature sensor (φ6*50mm,cable length 1.5meter)

2 x NTC10K temperature sensor (φ6*50mm,cable length 3meter)

1 x 10A power cable (Note: controller for 3000W electrical heater has no power cable delivered, user should prepare a cable of 2.5mm2).

Note:

there are 4 inputs for NTC10K, B=3950 temperature sensor, but only 2 sensors are included in the standard delivery list; the other one should be purchased separately by customer if necessary.

Working Principle:

1.When the temperature of the panel collector reaches the set valve, the controller shall start the circulation pump automatically.

2.The circulation pump makes heat-conducting liquid circulate automatically.

3.The heat-conducting liquid transfer heat to water by the heat exchanger in the water tank. 4.In case the temperature of the collector dose not reach the set valve, the circulation pump shall be shut automatically 5.In case the temperature of the water tank dose not reach T-max, then start the auxiliary heating device.

Specification of flat plate solar collector:

1) Low iron textured tempered glass(3.2mm thickness)offers the best capability of durability, strength.

2) Tinox blue titanium or black chrome coating have very high absoption rate to ensure the high efficiency.

3) Whole-plate ultrasonic welding technology makes the flate plate solar collector more beautiful, efficient and durable.

4) Special Anodized aluminum alloy frame to ensure handsome appearance and can accept high pressure without leakage.

System: