7
3.9
Heating circuit 2 (Optional)
All the models in the
Evolution EV HFC
range of boilers are supplied with a circulation pump
connected to heating circuit 1 (BC1). In addition to this circuit, all the models are designed to
control a second heating circulation pump in a second heating circuit (circuit 2, BC
2
).
The hydraulic installation of heating circuit 2 should be made using the optional flow circuit (IC') on
the rear of the boiler (see "Diagrams and Measurements"). If there is an SRFC2/EV underfloor
heating kit connected to the optional flow IC', heating circuit 2 should be connected at the
additional sockets provided in the kit (on the boiler T-connectors).
The circulation pump installed in heating circuit 2 must be electrically connected between
terminals N and 6 on the supply connector block
J2
(see “Electrical Connection Diagram").
Summary of Contents for EVOLUTION EV 20 HFC
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