Lennox Hearth RDI-42-H, HCI-42-H installation instructions Framing Specifications

FRAMING SPECIFICATIONS

Header

Framing Dimensions

A	49"	1245 mm
B	46-1/2"	1181 mm
C	33"	838 mm
D	17-1/2"	445 mm
E	81"	2057 mm
F	40-3/8"	1026 mm

Back Wall of	C
	FOAK Combustion
Chase/Enclosure	Air Kit - Optional
Including Finising
Materials
if any
	D
J	F

G 24" 607 mm

Rough

A

E

B

A

Fireplace Framing

Figure 11

Back Wall of Chase/Enclosure	FOAK Combustion
Including Finising Materials if any	Air Kit

H	23"	584 mm
J	57-1/4"	1454 mm

Note: All framing dimensions calcu- lated for 5/8" nailing flange depth and 1/2" dry wall at the fireplace face. If sheathing the chase or finishing with other thickness materials, calculations will need to be made.

Note: A, C and G dimensions include 1" clearance to combustibles.

Framing Face (Unfinished Shown)

Figure 14

Corner Installation

G

A	Rough
	Framing Face

Inside Chase (Unfinished Shown)

Figure 12

Framing Dimensions for Ceiling

Flue Type	A	B
FTF8 Vertical	16-1/2"	16-1/2"
	(419 mm)	(419 mm)
FTF8 Offset 30°	16-1/2"	27"
	(419 mm)	(686 mm)

B

Figure 15

A

Ceiling Framing

Back Wall of Chase/Enclosure	FOAK
Including Finising Materials	Combustion	Framing Dimensions for Roof
if any	Air Kit - Optional

H

A

Rough

Framing Face

(Unfinished Shown) Outside Chase

Figure 13

	Pitch	C	D*
G	0/12	16-1/2"	16-1/2"
		(419 mm)	(419 mm)
	6/12	16-1/2"	19"	C
		(419 mm)	(483 mm)	D
	12/12	16-1/2"	23-1/2"	Roof Framing
		(419 mm)	(597 mm)
	* Perpendicular to roof ridge			Figure 16

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

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