HEP model High Efficacity Pressure is a single wall stainless steel liner.
Data sheets
  • Wall: Stainless Steel as per UL1738 (24ga – 6″ (152mm) to 48″ (1219mm) diameter).
  • Continuous laser welding.
  • Full range of accessories including elbows, fittings, guides and supports.

Cheminee lining.E Inc. venting systems models IPP and HEP are listed by underwriters Laboratories Inc. (UL) under file MH46608 and tested in accordance with UL 1777 standard for chimney liners and the canadian standard ULC-S635, standard for Lining Systems for Existing Masonry or Factory Built Chimney and VEnts. Listing include the following chimney porduct categories and diameters.

UL 1777 Chimney Liners & ULC-S635 Standard for Lining Systems for Existing Masonry or Factory Built Chimneys and Vents
Categories Model Temperature Dimention
I IPP, HEP 570 ºF 6'' to 24''
I, II, III, IV HEP 550 ºF 6'' to 48''
Sample specification (Lining system)

The chimney and flue must meet UL (Underwriters Laboratories Inc. ) and C-UL (Underwriters Laboratories of Canada Inc.) standard and carry the appropirate approval labels. The maximum temperature must be 570 ºF (300 ºC) for continuous operation.

The chimney and flue components msut be of single wall construction and property designed for positive pressure exhaust. Model IPP wall must be made of 20 gauge 304 or 316 stainless steel. with a continuous laser welding. Model HEP must b made of 24 gauge stainless steel as per UL 1738, with a continuous laser welding. The jointing must using the assembly band (AB), finishing band (FB) and the appropriate sealing material, as supplied by the manufacturer.

All components msut be installed according to the manufacturer recommendations and msut meet the NFPA and local safety code requirements.

  1. Models IPP and HEP venting systems are primarily intended to be installed in fire resistive, non combustible surroundings or in unenclosed installation. They are not intended for use in one or two-family dwellings. (CAUTION: Do not enclose this venting system in chase or passageway made of wood or other combustible material.)
  2. Where the venting system extends through any zone of a building outside the area in which the heating appliance connected to it is located, it shall be provided with an enclosure having a fire resistance rating equal to or greater than the fire rating of the floor, wall or roof assemblies through which it passes.
  3. Models IPP and HEP venting systems may penetrate a combustible roof or wall using the Ventilated Roof Flashing assembly. For wall penetrations, the use of the Wall Firestop assembly is required. This is the only part intended for use with combustible construction. All other parts, such as Anchor Plate and Wall Support, Wall Guide and Floor Guide are for attachment to non-combustible construction.
  4. Where, according to local code, no chase enclosure is necessary, models IPP and HEP may be placed adjacent to or on each pipe section and in the individual listing; see “CLEARANCES”. Contact local building or fire officials about restrictions and installation inspection in your area.