Description Increasing Top Hat Adaptor – 125mm-150mm: Seamless Integration for Flexible Chimney Systems The Increasing Top Hat Adaptor in 316 stainless steel is ingeniously designed to be installed at the base of the chimney, precisely beneath the register plate. Featuring a rebated connection on the underside of the plate, it facilitates the connecting flue’s smooth 100mm sliding motion, allowing effortless integration or disconnection of the stove. Positioned above the plate, this adaptor to MI-FLEX serves as the transition point to the flexible flue liner, complete with a built-in square cover plate to neatly conceal the hole created in the register plate. Overview: MF20 MI-FLEX accessories offer heavy-duty fittings crafted from premium 0.6mm 316 stainless steel. This family of installation fittings is meticulously designed for seamless compatibility with MI-FLEX 316 and 904 flexible flue liners, ensuring the creation of a comprehensive and efficient chimney system. General Application: These items are engineered to complement MI-FLEX Multi-fuel flexible flue liners, adhering strictly to Building Regulations Document J guidelines, which mandate the complete enclosure of a flexible flue liner within a masonry chimney. They are suitable for use on appliances operating at temperatures up to 600 degrees (T600 designation) and are compatible with Wood Bottom Fixings: Bottom fixings play a crucial role in transitioning from the connecting flue system to the Flexible flue liner. The connection to the flex should remain within the confines of the existing masonry chimney, ensuring no exposed flex at any point. Proper provisions must be made to secure the bottom fixing into the connecting flue below and the flexible above to create a gas-tight seal. Utilization of fire cement, ceramic rope or tape, or high-temperature sealant is advisable for a secure installation. Specific Application: The Increasing Top Hat Adaptor in 316 stainless steel is installed beneath the register plate, facilitating the smooth sliding of the connecting flue for seamless integration or disconnection of the stove. Positioned above the plate, it acts as the transition point to MI-FLEX, incorporating a built-in square cover plate to neatly conceal the register plate hole. Maintenance: Ensure the chimney system is designed to enable easy access for sweeping and maintenance, to be carried out by a competent person. For solid fuel applications, refer to HETAS registered sweeps for appropriate maintenance guidance. Avoid using chemical cleaners or mild steel tools on stainless steel chimneys. Regular cleaning and inspection should be conducted at least annually, along with biannual sweeping for chimneys serving solid fuel appliances, preventing potential blockages or deposits. Specifications: Designation: MI-FLEX Accessories MF20 System: 316L Material: Natural / Stainless Steel Colour Finish: Natural / Stainless Steel Fuels: Wood, Oil, Gas, Smokeless coal Approvals: BSEN 1856-2 T600 N1 W V2 L50012 G Dimensions: 125mm-150mm The Increasing Top Hat Adaptor – 125mm-150mm ensures seamless integration, providing the necessary flexibility for stove integration or disconnection while maintaining the integrity of the structure.
