Drolet HT-2000 Dokumentacja Pobierz pdf (Strona 35)

HT-2000 Installation and Operation Manual

7.4.2 Table of Clearance Reduction Percentages

Type of shield

Clearances may be reduced by these

percentages

Sides

and rear %

Top %

(ceiling)

Can/US

(%)

USA

min.

Can/US

(%)

USA

min.

Sheet metal, a minimum of 24

gauge (0.61 mm) in thickness ,

spaced out at least 25 mm (1 in)*

by non-combustible spacers

67 12 po 50 18 po

Ceramic tiles, or equivalent non-

combustible material, on non-

combustible board spaced out at

least 25 mm (1 in)* by non-

combustible spacers

50 18 po 33 24 po

Ceramic tiles, or equivalent non-

combustible material, on non-

combustible board, with a

minimum of 24 gauge (0.61 mm)

sheet metal backing spaced out at

least 25 mm (1 in)* by non-

combustible spacers

67 12 po 50 24 po

Brick, spaced out at least 25 mm

(1 in)* by non-combustible spacers

50 18 po N/A N/A

Brick, with a minimum of 24 gauge

(0.61 mm) sheet metal backing,

spaced out at least 25 mm (1 in)*

by non-combustible spacers

67 12 po N/A N/A

* In Canada this space can be 21 mm (7/8 in).

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