Ducts and fittings insulated with mineral wool

Temperature maintenance is one of the most significant factors that influence comfort of occupants in the building, therefore a large amount of energy is wasted to maintain chosen temperature - air conditioning and ventilation equipment. Although heat loss is unavoidable, using adequate thermal insulation of ventilation ducts can reduce energy consumption. In order to calculate thermal insulation thickness, we recommend checking International standard ISO 12241 ‘Thermal insulation for building equipment and industrial installations. Calculation rules’.

Ducts and fittings (bends, t-pieces, reducers, dampers and couplings) are available with 25, 50 and 100 mm insulation.

Ducts and fittings insulated with mineral wool - Products range

Product code	Name of product	Files to download
Duct and fittings insulated with mineral wool	Tolerance for ducts and fittings, instalation, assembly instructions This is ALNOR's range of insulated square ducts and fittings of the IZOL^®system. The IZOL^®system is a registered tradename of pre-insulated ventilation ducts and fittings for indoor and outdoor systems. All system components are provided with inner and outer steel sheet cladding, and a thermal-insulation layer in between. The nominal diameter range of 100-500 mm always refers to the inner diameter of ducts and fittings. Insulation There are 3 types of insulation available: 25 mm insulation — the nominal insulation system is 25 mm, and the actual value ranges from 15 to 32 mm; the insulating layer is fitted tightly against the inner and outer cladding which define the product's size according to the SPIRAL®system sizing series. 50 mm insulation — the nominal insulation system is 50 mm, and the actual value ranges from 35 to 60 mm; the insulating layer is fitted tightly against the inner and outer cladding which define the product's size according to the SPIRAL®system sizing series. 100 mm insulation — the nominal insulation system is 100 mm, and the actual value ranges from 75 to 140 mm; the insulating layer is fitted tightly against the inner and outer cladding which define the product's size according to the SPIRAL®system sizing series.	Tolerance for ducts and fittings, instalation, assembly instructions
SPRI	Pre-insulated round ducts The standard duct length is 3000 mm; the sheet thickness for a given diameter is the same as that for the SPR spiral coiled ducts. The ducts of diameter 250 mm or greater feature outer ribbing to improve the robustness and vacuum pressure strength.	Pre-insulated round ducts
BSLI-90	90 degree Pre-insulated bends The BSLI pre-insulated bends consist of an inner duct bend with an EPDM gasket and an outer duct bend without gaskets.	90 degree Pre-insulated bends
BSLI-60	60 degree Pre-insulated bends All BSLI pre-insulated bends consist of an inner duct bend with an EPDM gasket and an outer duct bend without gaskets.	60 degree Pre-insulated bends
BSLI-45	45 degree Pre-insulated bends All BSLI pre-insulated bends consist of an inner duct bend with an EPDM gasket and an outer duct bend without gaskets.	45 degree Pre-insulated bends
BSLI-30	30 degree Pre-insulated bends All BSLI pre-insulated bends consist of an inner duct bend with an EPDM gasket and an outer duct bend without gaskets.	30 degree Pre-insulated bends
BSLI-15	15 degree Pre-insulated bends All BSLI pre-insulated bends consist of an inner duct bend with an EPDM gasket and an outer duct bend without gaskets.	15 degree Pre-insulated bends
RSCLLI	Pre-insulated reducer All RSCLLI pre-insulated reducers consist of an inner reducer with an EPDM gasket and an outer reducer without gaskets.	Pre-insulated reducer
TPCLI	Pre-insulated tee-pieces All TPCLI pre-insulated T-pieces consist of an inner T-piece with an EPDM gasket and an outer T-piece without gaskets.	Pre-insulated tee-pieces
MSFI	Pre-insulated female couplings Insulated couplings are used for joining ducts and fittings: NSLI - Male couplings are used for joining SRI ducts MSFI - Female couplings are used for joining fittings	Pre-insulated female couplings
NSLI	Pre-insulated male couplings The NSLI male connectors are designed for coupling SPRI ducts together.	Pre-insulated male couplings
CPFI	Pre-insulated female end caps The CPFI female end cap is designed for stopping fittings.	Pre-insulated female end caps
CSLI	Pre-insulated male end caps Male end caps are used for closing ducts.	Pre-insulated male end caps
DASLI	Pre-insulated closing dampers The DASLI dampers can be installed in ductwork systems which do not require full airtightness. The damper blade position is read from the control handle, which can be locked in position with screws.	Pre-insulated closing dampers

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