Installation; Stripping Lengths; Electrical Connection - Fronius Ohmpilot Bedienungsanleitung

Installation

Stripping lengths

Electrical con-
nection
Danger from inadequate ground conductor connection.
This can result in severe personal injury or damage to property.
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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 the heating system. Also check the maximum permissible inlet water and hot
water temperature when setting the temperature on the heating element.
IMPORTANT! The RS485 conductor should be designed as a data cable in order to pre-
vent any mix-up with the grid conductor when connecting.
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WARNING!
Adequately dimension the ground conductor connection.
Stripping length of terminals on power
stage set (L1, L2, etc.)
Stripping length of terminals on control
board (D+, D-, - and PT1000)