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Фрагмент инструкции
23 Minimum firebox dimensions from combustible materials. 16 7412961 STR/CVR Series Woodburning Fireplaces Minimum Wall Clearances WITH Noncombustible Surround Facing WITHOUT Noncombustible Surround Facing Minimum Hearth Extension Dimensions (for On-Site Construction) GH G J Seal cracks between the fireplaceand hearth extension with noncombustible material Safety stripsmust overlap ......" minimum May installnoncombustible decorative coveringOR .018" min. sheet metal FireplaceHearth Combustible Floor Minimum Insulation Value "R" 4" MIN. Firebox Opening A -Min. clearance to combustible perpendicular wall B -Min. clearance to combustible perpendicular wall whenusing noncombustible wall shield* Side Wall Side Wall F** C** EE D 4" BRICK (Example material) Combustible material permitted within shaded area. * Noncombustible wall shield requires 1" CFM Corporation EH2416 insulation (minimum R Value = 1.85) between decorative noncombustible rigid covering and combustible wall. Minimum height and width is 40" x 40". ** Dimension/degree of angle will vary depending on thicknessof noncombustible surround facing. GH G J CVR STR 4" Shaded area starts 1/2" away fromedge of unit A B C D E F G H J K STR33/36 CVR36 16" 12" 48° 41° 18" 14" 8" 16" 48" 24" (406 mm) (305 mm) (457 mm) (356 mm) (203 mm) (406 mm) (1219 mm) (610 mm) STR42 CVR42 20" 12" 42° 35° 18" 14' 12" 20" 61..." 24" (508 mm) (305 mm) (457 mm) (356 mm) (305 mm) (508 mm) (1562 mm) (610 mm) FP714 Fig. 24 Combustible side wall protection and hearth extension dimensions. Hearth Installation A hearth extension is required to protect a combustible floor in front of the fireplace. Refer to Figure 24 for minimum dimensions and mounting detail. Note: Hearth Extension must not cover the air inlet opening of a fireplace. The hearth extension described in Figure 24 must be a durable noncombustible material with a minimum (total) Rt value of 1.09; refer to Figure 25 for examples. The overall height (above a combustible floor), depth and width must be as indicated, with the extension centered to the fireplace opening. The top of the insulation material must be covered with a noncombustible decorative covering or a piece of .018” minimum sheet metal, to protect hearth extension material. (Fig. 24) Secure the hearth extension to the floor to prevent shifting, using trim molding or other similar means at three (3) outer edges. Seal crack between the fireplace hearth and hearth extension with a noncombustible material. (Figs. 24 and 26) WARNING: HEARTH EXTENSION MUST BE INSTALLED IN ACCORDANCE WITH FIGURES 24 AND 25. Alternate noncombustible materials may be used providing the (total) thermal resistance (Rt value) of the alternate material employed is greater than or equal to R = 1.09. Thermal resistance (R) or thermal conductivity (K), may be obtained from manufacturer of the material. Factors are related by the formula K = 1/R. T = given thickness R = thermal resistance for a given thickness (T) K = thermal conductivity Noncombustible material with a lower R value may be used, provided thickness of material is sufficiently greater to maintain an equivalent (total) thermal resistance (Rt). 7412961 17 STR/CVR Series Woodburning Fireplaces Example of Determining Hearth Extension Equivalents To determine the thickness required for any new mate rial: NEW required thickness = K of new material (per inch) K of listed material (per inch) X thickness of listed material Example for Common Brick T (new) = 5.0 / 0.458 x 0.50 in. = 5.46 in. (new required thickness). COMMON MATERIALS AND FACTORS MATERIAL K* R MINIMUM THICKNESS EH2416 ..................................0.458 1.09 0.50 in.** Common Brick 5.0 0.10 5.46 in.** R Value is for ...... inch. * Units of K = BTU/SQ FT/HR/.F/IN** Thickness of Listed Material FP533AD Fig. 25 Hearth extension material factors. Wall Covering Noncombustible Decorative Facing Noncombustible Decorative Covering Seal all cracks between fireplacesurround and wall materials with noncombustible material. Seal crack between fireplaceand hearth extension with noncombustible material. 2x4" Header - Do not notch at standoffs. 2x4" Stud Safety Strips - Must be overlapped ......" minimum. Hearth Extension Insulation Side View NOTE: ../.." air spacebetween Outer Dome and combustible materials ../.." ../.." Outer Dome FP719 Fig. 26 Finish wall treatments and gap sealing. Seal Cracks Between Fireplace and Hearth FP1170 Value R-0.94 Fig. 27 Hearth extension dimensions. Majestic Safety Strips Must be Overlapped 1/2" Min. Minimum Insulation 1/4" Min. Thickness Combustible Floor Noncombustible Material 7..." Max. Thickness Extension with Noncombustible Material Noncombustible Material Lower Surround Fireplace Hearth .................................... 2” (51 mm) 2” (51 mm) Maximum 14” (356 mm) Maximum 10” (254 mm) A A .......................................................... Minimum 33” (838 mm) Minimum 36” (914 mm) Minimum .030 Thick Stain- less Steel Plate Insulation with ...
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Камины - STR36 (1.59 mb)