20
Stripping length of terminals on power
stage set (L1, L2, etc.)
10 mm
8 mm
Stripping length of terminals on control
board (D+, D-, - and PT1000)
Stripping
Lengths
Electrical
Connection
Opening the
Ohmpilot
IMPORTANT! Electrical connection work may only be carried out by a specialist.
IMPORTANT! The ground conductor connection must be perfectly installed and reliably
connected.
IMPORTANT! The Ohmpilot must be equipped with an overvoltage protection device of
maximum B16 A and a residual-current circuit breaker on the grid side.
IMPORTANT! On the output side, it must be ensured that only purely resistive loads are
connected.
IMPORTANT! The maximum cable length from the output of the Ohmpilot to the load
(heating element) must not exceed 5 m on EMC grounds.
IMPORTANT! The Ohmpilot must be protected against overvoltage from the grid.
IMPORTANT! When connecting a heating element, check the grounding of the boiler/
buffer and/or the heating system and, when setting the temperature on the heating ele-
ment, observe the maximum permitted inlet water and hot water temperature.
IMPORTANT! The RS485 conductor should be designed as a data cable in order to
prevent any mix-up with the grid conductor when connecting.
WARNING! An electric shock can be fatal. Danger from residual voltage in
capacitors. Wait for the capacitors to discharge. The discharge time is 15
seconds.
WARNING! An inadequate ground conductor connection can cause serious
injury or property damage.
WARNING! Risk of burns from the heatsink when open.
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