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 due to electromagnetic compati-
bility.
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 lead should be designed as a data cable in order to
prevent any mix-up with the mains lead 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 con-
trol board (D+, D-, - and PT1000)