2
LENNOX HEARTH PRODUCTS • MONTEBELLO
®
DLX DIRECT VENT GAS FIREPLACES (MDLX40/45) • INSTALLATION INSTRUCTIONS
INTRODUCTION
The
Montebello
®
DLX
direct-vent, sealed-
combustion gas fireplaces operate on natural
or propane gas. These appliances feature a
remotely controlled electronic intermittent pilot
ignition system (manual adjustment of the gas
valve settings is not possible).
The Montebello DLX is a decorative fireplace
and may not be installed and operated as the
primary heat source in a dwelling.
Electrical power (120 VAC line voltage) is rec-
ommended to operate the fireplace; however,
four (4) "AA" batteries can be used for full-time
operation or as a backup in case of a power
outage.
Approved Vent Components
These fireplaces are designed, tested, and
listed for operation and installation with
Secure
Vent
®
direct vent system components (8" inner,
11" outer) manufactured by Security Chimneys
International.
These approved vent system components
are labeled for identification.
USE ONLY AP-
PROVED VENT COMPONENTS. Do NOT use
any other manufacturer’s vent components
with these appliances.
Codes and Standards
These appliances comply with National Safety
Standards and are tested and listed by Intertek
(Report No. 100513650) to Z21.50 (in Canada,
CSA-2.22), and CAN/CGA-2.17-M91 in both
USA and Canada, as vented gas fireplaces.
These appliances are listed by Intertek for
installation in bedrooms and mobile homes.
Installation must conform to local codes. In
the absence of local codes, installation must
comply with the current National Fuel Gas
Code, ANSI Z223.1 (in Canada, the current
CAN/CGA-B149.1 installation code).
The appliance, when installed, must be electri-
cally grounded in accordance with local codes
or, in the absence of local codes, with the
National Electrical Code, ANSI/NFPA 70 (latest
edition) or the Canadian Electrical Code, CSA
C22.1 (latest edition).
TABLE OF CONTENTS
Packaging . . . . . . . . . . . . . . . . . . . . . . . . . 2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
General Information . . . . . . . . . . . . . . . . . . 3
Massachusetts Requirements . . . . . . . . . . 4
Cold Climate Insulation . . . . . . . . . . . . . . . 5
Manufactured Home Requirements . . . . . . 5
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Vent Termination Clearances . . . . . . . . . . . 6
Minimum Clearances to Combustibles . . . . . 8
Detailed Installation Steps . . . . . . . . . . . . . 9
Typical Installation Sequence . . . . . . . . . . 9
Step 1. Framing . . . . . . . . . . . . . . . . . . . . 9
Fireplace and Framing Specifications . . . . . . 10
Step 2. Routing Gas Line . . . . . . . . . . . . . 11
Proper Sizing of Gas Line . . . . . . . . . . . . . . 11
Step 3. Install the Vent System . . . . . . . . 12
Vertical Termination Systems . . . . . . . . . . . 13
Vent Section Length Chart . . . . . . . . . . . . . 13
Vertical Vent Tables and Figures . . . . . . . . . 16
Horizontal Termination System . . . . . . . . . 17
Horizontal Vent Tables and Figures . . . . . . 19
Step 4. Field Wiring . . . . . . . . . . . . . . . . . 21
Step 5. Removing Glass Door
Frame Assembly . . . . . . . . . . . . . . . . . . 23
Step 6. Connecting Gas Line . . . . . . . . . . 23
Step 7. Checking Appliance
Operation . . . . . . . . . . . . . . . . . . . . . . . . 23
Step 8. Installing Logs and Panels . . . . . . 24
Step 9. Installing Glass Door . . . . . . . . . . 26
Step 10. Burner Adjustments . . . . . . . . . . . 26
Finishing Requirements . . . . . . . . . . . . . . . 28
Step 11. Attaching Safety-in-
Operation Warnings . . . . . . . . . . . . . . . . 29
Installation Accessories . . . . . . . . . . . . . . . 30
Gas Conversion Kits . . . . . . . . . . . . . . . . . . 31
Please read and understand these
instructions before beginning your
installation.
PACKAGING
The assembled fireplace is packaged with the
following:
•
Literature Kit
(plastic bag shipped inside
firebox), containing Care and Operation
Instructions, Installation Instructions (this
manual), Safety-in-Operation Warning La-
bels, and Warranty.
• One (1) bag
Glowing Embers
• One (1) bag
Platinum Embers
• One (1) bag
Volcanic Stone
•
Pull Screen Kit
•
Remote Control and Wall Receiver Switch
Kit
•
Door Modesty Shield
•
Log Grate
NOTE
: For use with fireplace as shipped from fac-
tory only. Not for use with Contemporary Burner/
Floor Kit.
REQUIRED ACCESSORIES
The following accessories are required:
• One of the following
Firebox Liner Kits
:
a.
Ceramic Firebox Liner Kit - Buff Rustic
b.
Ceramic Firebox Liner Kit - Red Rustic
c.
Porcelain Firebox Liner Kit - Black
d.
Ceramic Firebox Liner Kit - Red Her-
ringbone
e.
Ceramic Firebox Liner Kit - Buff Her-
ringbone
NOTE:
Porcelain kits include side and back panels.
Optional for use with log sets. Required when
using the contemporary burner/floor kit.
• One of the following
Floor Options
:
a.
Oak Log Set
(For use with fireplace as
shipped from factory only. Not for use with
contemporary burner/floor kit.)
b.
Contemporary Burner/Floor Kit
Contemporary Burner/Floor Kit requires
one of the following
Media Kits
:
i. Crushed Glass - Reflective Black
ii. Crushed Glass - Platinum
iii. Crushed Glass - Reflective Blue
iv. Crushed Glass - Goldfinger
v. Crushed Glass - Copper
NOTE
:
The Contemporary Burner/Floor Kit instal-
lation and operation instructions are provided
with the kit, and are not detailed in this manual.
