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thilkNRG ZONE CONNECTIONS

FLOW CHAMBER
Top Chamber – hottest flow.
– Connection L1 & R1 are for primary flows.
– Connections T1, T2 & T3 have altering functions.
– All connections are 1” female iron fittings.

BYPASS CHAMBER
Centre Chamber – bypass/preheat
– Connections L2 & R2 have altering functions.
– All connections are 1” female iron fittings.

RETURN CHAMBER
Bottom Chamber – cold return.
– Connection L3 & R3 are for primary flows.
– All connections are 1” female iron fittings.

ZONES
The flow & return connections to the manifold are located at the bottom of the unit – (Return Chamber)
– The flow connection are labelled A1, B1, C1 and so on
– The return connections are labelled A2, B2, C1 and so on.
– All zone connections are 1” male iron fittings.

ZONE CONFIGURATION
The following zone configurations are for standard applications. Alternative layouts for differing applications may be applicable depending on the specific schematic.

– The flow connections are labelled A1, B1, C1 and so on.
– Zone pumps are to be installed on the flow connections – A1, B1, C1 and so on.
– Non-return valves are fitted on each zone return, B, to prevent any inadvertent heat drift.
– For DHW zone, a non-return is to be fitted to the flow to prevent back feeding from the cylinder.

pdf-iconNRG ZONE Information Booklet – Download