Lennox Hearth C160, CA160, SWI160 CHIMNEY REQUIREMENTS, INSTALLATION PROCEDURES

This appliance is approved for use in a masonry ﬁreplace built to UBC

Chapter 37 or equivalent with a minimum 25-1/2” (648 mm) width open-

ing at the front of the ﬁreplace.

This heater is designed to be installed into an existing masonry ﬁreplace

(built to UBC 37 or ULC S628 standards) or factory-built, solid-fuel and

wood-burning ﬁreplaces (listed to UL 127 or ULC S610) only.

Do not remove brick or mortar from masonry ﬁreplace to accommodate

insert. Approved with or without positive ﬂue connection. Approved

with minimum 6” (152 mm) diameter stainless steel listed reline system.

Lennox Hearth Products inserts are tested to UL 1482 / ULC S628 and

listed by OMNI-Test Laboratories, Inc.; Portland, OR.

IMPORTANT NOTE: See Draft Requirements and Selecting a Proper

Venting System on Page 4 to assist you in choosing the proper venting

system for your installation.

Remove and clean behind unit frequently, as creosote build-up may

occur rapidly.

CHIMNEY REQUIREMENTS

Note: Although not required, a full-length stainless steel liner is recom-

mended for optimum safety and performance. See your Lennox Hearth

Products dealer for details.

Note: When installing your ﬁreplace insert with a positive ﬂue connec-

tion, be sure to leave the insulation off the surround panels (ﬂanges)

and leave a 1/4” (6 mm) airspace between the surround panels and the

facing of your ﬁreplace.

1. READ ENTIRE INSTALLATION INSTRUCTIONS.

2. Check all REQUIRED CLEARANCES as speciﬁed in the previous section

(Page 7) of this installation and operation manual.

3. Wear gloves during installation in case of sharp edges on the ﬁreplace

insert and it’s parts

4. Open or remove the existing ﬁreplace damper. Make sure the damper

cannot fall closed.

5. Install the two 1/2” x 3” (13 mm x 76 mm) leveling bolts -heads up- a

few turns in the leveling nuts on each side of the outer chamber of the

insert at the lower rear corners.

6. Position the insert in the center of the ﬁreplace opening and push it

back until the surround brackets are approximately 2” (51 mm) away

from the ﬁreplace front.

7. Install the side surround panels and push the insert up snug against

the ﬁreplace face. Then with the location selected remove the surround

panels and level the ﬁreplace insert with the leveling bolts using a 3/4”

(19 mm) socket, extensions (to reach the bolt head) and a ratchet.

8. Glue the insulation around the outer edge of both the top and side

surround panels.

9. Install the surround panels loosely, align and tighten. Check for a tight

ﬁt against the ﬁreplace.

10. Install the brick and bafﬂe as per instructions on Page 6.

INSTALLATION PROCEDURES - MASONRY CHIMNEY

Listed Material

k (per inch) r (per inch) Listed Min. Thickness

Listed Material .84

1.19

3/4

(.75")

** Approved Alternate Materials for Floor/Hearth Protection

Alternative Materials Thermal Values Minimum Thickness

(rounded to nearest 1/8 inch)

k (per inch)

r (per inch)

Min. Thickness

Kaowool M Board .47 2.13 .42" (1/2")

Micore 160™

U.S. Gypsum

.35 2.86 .31" (3/8")

Micore 300™

U.S. Gypsum

.46 2.17 .41" (1/2")

Durock™ Cement Board

U.S. Gypsum

1.92 .52 1.71" (1-3/4")

Hardibacker™ 1.95 .51 1.74" (1-3/4")

Hardibacker 500™ 2.30 .43 2.05" (2-1/8")

Cultured Stone Hearth-

stone™

2.82 .35 2.52" (2-5/8")

Wonderboard 3.23 .31 2.88" (3")

Super Firetemp M

Johns-Manville

.61 1.64 .54" (5/8")

Super Firetemp L

Johns-Manville

.54 1.85 .48" (1/2")

Face brick 9.00 .111 8.04" (8-1/8")

Common brick 5.00 .20 4.46” (4-1/2")

Cement mortar 5.00 .20 4.46” (4-1/2")

Ceramic tile 12.5 .08 11.16" (11-1/4")

Marble ~11 ~.09 9.82" (9-7/8")

Table 3 - CANADA REQUIREMENTS

Using the k formula:

Minimum k-value (per Inch) of Speciﬁed min.

thickness of = alternate material (kM) x thickness

alternate k-value (per inch) of listed

material (TM) of listed material (kL) material (TL)

TM (inches) = kM x TL

*.84

TM (inches) = *.35 x .75"

*.84

.312 (inches)= .417 x .75"

Answer - The minimum required thickness of the Micore 160 is .312" therefore

round up to nearest standard thickness available which is 3/8” (.375”)

Minimum r-value (per Inch) Speciﬁed min.

thickness of = of listed material x thickness

alternate r-value (per inch) of listed

material of alternate material material

TM (inches) = rL x TL

TM (inches) = *1.19 x .75"

*2.86

.312 (inches)= .416 x .75"

Answer - The minimum required thickness of the Micore 160 is .312" therefore

round up to nearest standard thickness available which is 3/8” (.375”)

Using the r formula:

FOLLOWING EXAMPLES ARE CALCULATED FOR CANADA REQUIR-

MENTS