5.1 Main technical data
1.Externality size: 450mm*310mm*150mm
2.Max. self consumption:≤ 3W
3.Accuracy of temperature measuring: ± 2 ℃
4.Range of temperature measuring: 0~150 ℃
5.Power of controlled pumps(temperature difference circulation pump, water-using end circulation pump) or electromagnetic valve : ＜ 600W
6.Auxiliary heating power: ≤ 3000W
7.Input signal: 6 temperature sensors (PT1000 for heat collector, NTC 10k B=3950 for water tank)
8.Output signal: 5 (1 auxiliary heating, 4 pumps or 3 pumps and 1 three way electromagnetic valve)
9.System working pressure: 8bar and safety valve response pressure: 6bar.
5.2 Components of pipeline
1. Safety valve: protects the system components against excessive over-pressure in all operating phases.
2. Ball valve, check valve: brass material
3. WILO pump: this pump is a standard device in the system, that required operating point can be preselected using
one of the three levels.
4. Manometer: adopt hydraulic aseismatic manometer with a range from 0 to 10 bar indicates the system pressure.
5. Connect of expansion vessel: install expansion vessel, avoid the system working at minus pressure.
6. Flow sensor: timely monitor medium flow of the whole system..
7. Exhaust setting: adopt spray-paint steel tube, it can release air cause of medium flow in the pipeline. According air
quantity and frequency which cause of system, we can examine whether this system have leakage phenomenon.
(method of operation: counterclockwise rotation to open and clockwise rotation to close.)
8. Pipeline temperature display: medium temperature between flow trip and return trip, can be displayed at first time.
Temperature sensors are packed in a tube, Do not need to turn off any parts when replace it.
9. Medium inlet: turning the handle 90° to left so that medium can be injected in it.
10. Heat preservation material: EPS
11. Screw thread: 1/2 inch
12. Maximum working temperature of pipeline: flow trip （ manometer side ） 150 ℃
Combination picture

5.3 Installation description
SP228 should be installed in return circuit components (pump side) and flow circuit components (manometer side) of collector and water tank. As above picture.
6.Operation instruction

6.3 Device setup
Note : When only one insert for temperature sensor on tank, and you would like to use auxiliary
heating, you must use T3 instead of T2 to insert, Now T3 show the bottom temperature of the tank,
and this temperature value is much lower than the actual value of the top. To ensure the security
when using auxiliary heating, it is strongly recommended that using the tank which has two inserts
for temperature sensor.