De Marinis ISO 25 PLUS P2C15 15° twin-wall elbow G50

The De Marinis P2C15 15° elbow is an ISO 25 PLUS G50 component designed to create moderate offsets and gradual directional changes in insulated twin-wall flue systems.

Its 15° angle allows the flue axis to be adjusted progressively, making it useful where the chimney path must be adapted to the building geometry or routed around structural obstacles.

The P2C15 follows the ISO 25 PLUS construction, with an AISI 316L BA stainless-steel inner wall, an AISI 304 BA stainless-steel outer wall and 25 mm blown mineral wool insulation.

It is available in nominal internal diameters Ø80, 100, 130, 150, 180, 200, 250, 300 and 350 mm.

Main features

• Manufacturer: De Marinis
• Range: ISO 25 PLUS G50
• Product family: P2C15
• Type: insulated twin-wall elbow
• Angle: 15°
• Function: offsets and directional changes
• Inner wall: AISI 316L BA stainless steel – EN 1.4404
• Outer wall: AISI 304 BA stainless steel – EN 1.4301
• Insulation: 25 mm blown mineral wool
• Installation: indoor or outdoor
• Available internal diameters: Ø80 to Ø350 mm

What the P2C15 is used for

The P2C15 is used where the flue axis requires a moderate directional correction.

Typical applications include:

• creating small flue offsets;
• correcting chimney alignment;
• routing around structural obstacles;
• adapting the chimney route to the building layout;
• creating an offset by combining two elbows.

Creating a flue offset

Two P2C15 elbows can be combined, optionally with a straight flue section between them, to create a parallel offset.

The resulting displacement depends on elbow spacing, flue diameter and the overall geometry of the installation.

Design note: the actual offset geometry should be checked against the De Marinis technical drawing and the installation requirements for the complete flue system.

P2C15 and other ISO 25 PLUS elbows

• P2C05: 5° elbow;
• P2C15: 15° elbow;
• P2C3: 30° elbow;
• P2C4: 45° elbow;
• P2C9: 90° elbow.

ISO 25 PLUS and G50 classification

The P2C15 belongs to the De Marinis ISO 25 PLUS insulated twin-wall flue system.

The high-temperature designation is:

T600-N1-W-V2-L50040/050/060-G50

The G50 classification corresponds to a 50 mm clearance from combustible materials in the certified De Marinis system configuration.

Important: G50 applies only to the certified ISO 25 PLUS configuration installed according to De Marinis instructions.

ISO 25 PLUS construction

• Inner wall: AISI 316L BA stainless steel – EN 1.4404
• Outer wall: AISI 304 BA stainless steel – EN 1.4301
• Insulation: 25 mm blown mineral wool
• System: insulated twin wall
• Installation: indoor or outdoor

CE marking and system designations

The ISO 25 PLUS system is CE marked according to EN 1856-1:2009.

P2C15 dimensions and De Marinis product codes

Dimensional note: A and B vary according to nominal diameter. External diameter Øe is 50 mm greater than internal diameter Øi. When two elbows are combined, actual offset dimensions also depend on any straight sections installed between them.

How to read the technical drawing

• Øi: nominal internal flue diameter;
• Øe: external diameter of the insulated twin-wall system;
• A: main elbow overall dimension;
• B: transverse dimension generated by the elbow geometry;
• 15°: deviation angle from the flue axis.

Installation

The P2C15 must be installed according to the correct system orientation and the flue layout specified by the design.

When two elbows are combined to create an offset, joint alignment, spacing and support of intermediate sections must be properly checked.

Connected sections must be adequately supported to prevent excessive mechanical loads from being transferred to the elbow.

Installation must be carried out by qualified personnel in accordance with De Marinis technical documentation, appliance instructions and applicable regulations.