Samsung AM160FNBDEH Installation Manual page 50

Grounding work
A ground rod must be installed if the grounding terminal on the power circuit does not exist or meet the standard. Additional
accessories required for installation must be purchased separately since they are not supplied with DVM Hydro unit / Hydro
unit HT.
1. Prepare a ground rod that matches the one shown in the illustration.
Carbon rod or Copper rod
2. Select a appropriate place to install a ground rod.
- It is better to select a damp and firm ground than sandy ground or ground with gravels which is high-resisting.
- Avoid place with underground structure or facilities. (Gas pipe, water pipe, phone lines, or underground cable)
- Place has to be at least 2 m away from the lightening rod.
❋ Ground wire for phone lines cannot be used for grounding DVM Hydro unit / Hydro unit HT.
3. Install a green or yellow ground wire.
- Refer to the illustration on step 1 for the specification of a ground rod.
- If the ground wire is too short, it can be extended but connected part (where extended wire is connected) must be
wrapped with insulation tape. (Do not bury the connected part underground.)
- Fix the ground wire.
❋ Ground wire must be fixed firmly when it is installed at a place with lots of passerby.
50 cm
4. Check the ground resistance with a earth resistance tester to see if installation is done properly.
- If the resistance value exceeds requirement, place the ground rod deeper or add more ground rods.
5. Connect the ground wire to the terminal block of DVM Hydro unit / Hydro unit HT.
Copper wire
Solderless terminal (for M4 screw)
Green or yellow wire insulated with PVC, 2 mm
2
x 3.5 m
49