Instruction of SR91 Split Pressurized Solar Hot Water System
Page 6 of 49
1500W or 3000W/4000W of electrical heater should be remarked in the purchased
order
Dimension of display:
120*120*23mm
Dimension of controller board with 1500W output:
200*140*43mm
Dimension of controller board with 3000W/4000W output:
218*165*55mm
Note:
there are 4 inputs for NTC10K, B=3950 temperature sensor, but only 2 sensors
are included in the standard delivery list; the other two should be purchased separately by
customer if necessary.
2.2 Delivery list
1 * SR91 controller
1 * accessory bag
1 * user manual
1 *
PT1000 temperature sensor (φ6*50mm,cable length 1.5meter)
2 *
NTC10K temperature sensor (φ6*50mm,cable length 3meter)
1 *10A power cable ( Note: controller for 3000W electrical heater has no power cable
delivered, user should prepare a cable of 2.5mm
2
)
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. For control 3000W/4000W electrical heaters,
an extra switch should be installed, and 2.5mm
2
cable should be used to connect electrical
heater to the terminals of controller.
3.1 Mounting the display of controller
►Choose a suitable place
► Mark the position of hole( Note that the positive and negative directions)
►Drill the fixing hole, insert the expansion screw
► Fix the hanging plate by using screw.
► Press the display unit on the hanging plate.
Remove the display unit
► Use a flat screwdriver to pry open the top of the display
► Remove the display unit upward and take it out.
