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Controller for Altek SR91 Solar Systems

6,478 ₴

Other

Sunday 11:55

Україна

Київ Get directions →

вул. Стеценка, 14/44

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Published 4 days ago by Solar-Tech

6,478 ₴

In Other category

вул. Стеценка, 14/44, Київ, Україна

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Solar thermal controller – a mandatory control element for solar systems with forced circulation of the heat transfer fluid. It controls the process of heating the heat transfer fluid from the sun and monitors the condition of the heating system as a whole. The operation of the solar system is controlled as follows – the controller receives data from temperature sensors that are installed at the outlet of the solar collector and in the storage tank, analyzes them, and controls the circulation pump, which allows optimal use of electricity.

Technical specifications:

Dimensions, (mm)

120x120x23

Power supply, (V)

AC110 / AC220

Power consumption, (W)

< 3

Temperature measurement accuracy, (°C)

-/+2

Collector temperature measurement range, (°C)

-10…220

Tank temperature measurement range, (°C)

0…+110

Maximum pump power, (W)

3 pcs < 300

Inputs

2 pcs pt1000, 3 pcs ntc10k

Outputs (relays for pump, valve, heating element)

10 A

Operating temperatures, (°C)

-10 +50

Ingress protection class

IP40

Functions of the SR series controllers:

-
Manual control

-
Password setup

-
Return to factory settings

-
"Output" function

-
Manual heating function

-
Temperature indication

-
Memory protection

-
Water protection (auto shutdown)

-
Protection against incorrect connection

-
Error indication

Detailed list of controller functions:

Controller

SR91

Remote control capability (Internet)

Number of schemes (software algorithms)

Setting the temperature differential for switching the solar circulation pump on and off

Function for monitoring additional heating

Timed recirculation

Setting stagnation temperature

Setting maximum collector temperature

Collector protection from low temperature

Collector frost protection

Tank cooling function

Set max. temperature of tank 1

Set max. temperature of tank 2

Set max. temperature of tank 3

Maximum cutoff temperature (solid fuel boiler, return heating control, heat transfer between tanks)

Minimum activation temperature (solid fuel boiler, return heating control, heat transfer between tanks)

Maximum temperature during heat transfer

Minimum temperature during heat transfer

Temperature to enable heat transfer from tank 1 to 2

Temperature to disable heat transfer from tank 1 to 2

Temperature to enable heat transfer from tank 2 to 1

Temperature to disable heat transfer from tank 2 to 1

Setting temperature units (Celsius-Fahrenheit)

"Anti-Legionella" function (Prevents bacteria growth in the storage tank by briefly heating the entire volume of water)

Control of recirculation activation temperature

Control function for heating from a solid fuel boiler

Control of circulation pump speed

Standard temperature differential (for controlling circulation pump speed)

Increase of circulation pump speed

Control of the second circulation pump speed

Standard temperature differential for the second pump

Increase of the second circulation pump speed

Measurement of collected thermal energy

Change of flow rate magnitude

Selection of heat transfer fluid type

Change of heat transfer fluid concentration

Setting priority logic between tanks

Heating duration

Heating time interval

Bypass (high temperature)

Storage tank cooling (analog BYPA)

Delay function for activation of the circulation pump

Interval pump operation function (if there is no temperature sensor in the collector)

Activation time for INTV function

Deactivation time for INTV function

Time interval between circulation pump operations

Circulation pump operation time between checks

Circulation circuit temperature differential

Selection of connected flow meter type

Recording data to miniCD flash drive

Recording interval to card

Setting temperature measurement units (analog C-F)

Thermostat function

Published on 2026/10/11

Description