Instruction of SR81 Split Pressurized Solar Hot Water System
Page 6 of 59
1 * Semiconductor relay, Max current: 1A
2 * Electromagnetic relay, Max. Current: 2A
1 * Electromagnetic relay, Max. Current: 10A
1 * Low voltage relay for linkage with HR
（
on/off signal
）
1* PWM frequency control output (0-10V)
Function:
running time accumulation, tube collector function, timing heating function,
pump speed control, thermal energy measuring, external heat exchanger, system
parameters adjust, optional function adjust (menu), balance and diagnose function.
Power supply:
AC1
00…240V ~(50…60Hz)
Rated impulse voltage:
2.5KV
Housing:
Plastic ABS
Mounting:
Wall mounting
Operation:
10 push buttons at the front cover
Protection type:
IP40
Dimension of display:
120*120*18mm
Dimension of controller board:
200*140*43mm
Note:
there are 5 inputs for NTC10K, B=3950 temperature sensor, but only 4 sensors
are included in the standard delivery list; the other one should be purchased separately by
customer if necessary.
2.2 Delivery list
1 * SR81Q controller
1 * accessory bag
1 * user manual
1 *
PT1000 temperature sensor (φ6*50mm,cable length 1.5meter)
4 *
NTC10K temperature sensor (φ6*50mm,cable length 3meter)
1 *
10A power cable
3. Installation
Note:
The unit must only be located in the dry interior rooms. Please separate
routing of sensor wires and mains wires. Make sure the controller as well as the system is
not exposed to strong electromagnetic fields.
