4.11.1 Information on circulating pumps
NOTICE
According to 2012/622/EU external, wet running circulating pumps must comply
with the following limit values of the Energy Efficiency Index (EEI):
- Effective from 01/01/2013: Wet running circulating pumps with EEI ≤ 0.27
- Effective from 08/01/2015: Wet running circulating pumps with EEI ≤ 0.23
Only high efficiency pumps with a connection option for a control signal (PDM / 0-10V)
should be connected to speed-controlled pump outputs (pump 1 on the core module
and pump outputs on the hydraulic module). In this case, the control line is connected
to the corresponding PDM outputs of the boards. Observe the connection instructions
in the boiler controller documentation!
CAUTION
When using high efficiency pumps without an additional control line at speed-
controlled pump outputs:
Malfunctions of the boiler, the pump and the hydraulic system may occur!
Therefore:
❒ Do not connect EC motor pumps without a control line to the speed-controlled
pump outputs of the boards.
➥ Only use special high efficiency pumps with a connection option for a
control line (PDM/0-10V)!
➥ Observe the additional instructions and information on board outputs in the
operation instructions for the boiler controller.
Assembly
4
Electrical Connection
Installation Instructions PE1 Pellet 7-35 | M1441017_en
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