Lennox Hearth Products CI1500DVF Series, Installation Instructions Manual

16

NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

Direct-Vent Retrofit Of Existing Chimney System

An existing Class-A (wood-burning) Metal Chimney or Masonry Chim-

ney can be converted to a direct-vent system.  Use one of the following 

chimney conversion kits listed below.  Have the existing chimney system 

inspected by a professional prior to the conversion. 

The chimney conversion should not be applied to the portion of the vent 

system that is in the room of the appliance.  Use only Co-Axial direct-

vent pipe (4” inner pipe, 6 5/8” outer pipe as listed on 

Page 17

)

 from the 

appliance to the retro-connector into converted flue system.  Adhere to 

all specifications outlined in this manual regarding clearances to combus-

tibles, vertical and horizontal vent length minimums and maximums, etc. 

Read all instructions in this manual and provided by vent manufacturer 

with  kit  carefully  before  starting  the  installation.  Failure  to  follow  the 

instructions may create a fire or other safety hazard, and will void the 

warranty. The following Vent System components may be safely used 

with this appliance.

Figure 17

Chimney DV Liner Kits

Model

Brand: SECURITY SECURE VENT / Description

SV4MCK

Masonry Chimney Conversion Kit –Vertical term. Cap, cap 

adapter,  masonry  cover,  black  adapter  (to  flex),  2  gear 

clamps

SV4CCK1

Factory Built Chimney Conversion Kit – for 6” I.D., 1” insula-

tion.

SV4CCK2

Factory Built Chimney Conversion Kit – for 7” I.D., 1” insula-

tion; 8” I.D., 1” insulation; 6” I.D., 2” insulation

SV4CCK3

Factory Built Chimney Conversion Kit – for 10” I.D., 1” insula-

tion; 7” I.D., 2” insulation; 8” I.D., 2” insulation

Model

Brand: SIMPSON DURA-VENT / Description

934

Masonry Chimney Conversion Kit

931

Factory Built Chimney Conversion Kit A – for 6” I.D.;

932

Factory  Built  Chimney  Conversion  Kit  B  –  for  6”,  7”  &  8” 

I.D.

933

Factory Built Chimney Conversion Kit C – for 7” & 8” I.D.

Table 7

8 feet

1 inch

minimum

Support

Brackets

Wall

Stud

Installing Support Brackets

Install support brackets per vent manufacturers instructions.

Figure 15

Select Venting System - Horizontal Or Vertical

The following sections describe vertical (roof) and horizontal (exterior 

wall) vent applications. Refer to the section relating to your instal-

lation. A list of approved venting components is shown on 

Pages 

16 and 17

.

Vertical

Horizontal

Combustion

Air

Exhaust

Placement:

Horizontal Runs - Requires a 

support bracket every 5 feet 

(152 cm).

Vertical  Runs  -  Requires 

support  brackets  every  8 

feet  (244  cm)  above  the 

stove vent outlet..

Vertical Vent Installation

Support Bracket Placement Diagram

Horizontal Vent Installation

Support Bracket Placement Diagram

Figure 16

Vertical

Rise

Elbow

Horizontal / Inclined Run

(

¹⁄₄

" Rise per Foot of Horizontal Run in the

Direction away from the Stove)

Termination

Shown

Firestop/Spacer

Vent Sections

Support Bracket Spacing

Every 5 ft (1.52 m)

See figure  for

vertical vent 

Support

Brackets

Building

Support

Framing

Ceiling

Exterior

Wall

section support.