Instruction of SR81 Split Pressurized Solar Hot Water System
Page 7 of 48
3.2 Mounting the board of controller
Follow the below steps to mount the controller on the wall.
► Select the proper place to install main board of
controller
► Put the hung housing plate on the wall and mark
the upper fastening point.
► Drill the holes and put the plastic expansion bolt
into the holes.
► Hang the housing plate on the screw and fasten it
► Hang the controller on the housing plate.
3.3 Preparation before wiring connection
Open/close the cover of connection terminal.
► Unscrew the screw ①②, and take out the cover
upwards
► Close the cover: close the cover downwards
► Fix the cover with the screw ①②
3.4 Wiring connection
Note: Power can only switched-on when the controller housing is closed. Installer
should be sure that the IP safety protection grade of controller isn’t damaged during
installation.
According to the way of installation, wire can be connected from hole ④ on the bottom plate
or from hole ⑤, using a suitable tool (like knife) to cut the plastic of ⑤, and wire is
connected into housing from hole ⑤.
Note: wires must be fastened by fixing clamps on the position⑥.
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