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LENNOX HEARTH PRODUCTS • MONTEBELLO
Step 3. INSTALL THE VENT SYSTEM
General Information
These instructions should be used as a
guideline and do not supersede local
codes in any way. Install venting according
to local codes, these instructions, and
the (USA) National Fuel Gas Code, ANSI
Z223.1/NFPA 54—latest edition, or
(Canada) CAN/CSA-B149.1—latest edition.
These fireplaces are designed, tested and
listed for operation and installation only
with Secure Vent
(SV4.5) and Secure Flex
®
Direct-Vent System Components,
manufactured by Security Chimneys
International. These approved vent system
components are labeled for identification.
DO NOT use any other manufacturer's vent
components with these appliances.
Ensure clearances are in accordance
with local installation codes and the
requirements of the gas supplier.
Dégagement conforme aux codes
d'installation locaux et aux exigences du
foumisseunde gaz.
Use only approved venting components.
See Approved Vent Components on Page 2.
These fireplaces must be vented
directly to the outside.
The vent system may not service multiple
appliances, and must never be connected to
a flue serving a separate solid fuel burning
appliance. The vent pipe is tested to be run
inside an enclosed wall (such as a chase).
There is no requirement for inspection
openings in the enclosing wall at any of the
joints in the vent pipe.
Venting System
With the appliance secured in framing,
determine vent routing and identify the
exterior termination location. The following
sections describe horizontal (exterior wall)
vent applications. A list of approved venting
components is shown on Page 28.
12
DLX POWER VENT DV GAS FIREPLACES (MDLX40/45IN-PV) • INSTALLATION INSTRUCTIONS
®
Power Vent Components
Locate the fireplace as instructed in this manual. Make the following modifications to add the
components used with the Power Vent Kit. This kit may only be used in conjunction with Direct-
Vent series electronic versions of Lennox Hearth Products Fireplaces. This installation must
conform with local codes, or, in the absence of local codes, with the (USA) National Fuel Gas
Code, ANSI Z223.1/NFPA 54—latest edition, or (Canada) CAN/CGA-B149.1—latest edition.
CAUTION: This power vent kit cannot be used with millivolt appliances. Use the kit only
with the electronically controlled fireplaces listed for its use as shown in this document.
Item No.
Number
1
604187-01
®
2
601970-01
3
601451-01
4
5
102010-01
6
7
102022-01
8
P-8-7102
9
10
Table 12: Power Vent Kit Components
Figure 11: Power Vent Kit Components
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Part
Adaptor Assembly With Probe
Termination Assembly
74L61
SV Termination Adaptor (SV4.5RCH)
Strain Relief—3/8 in.
H2246
Firestop Assembly (Horizontal)
Hose Clamp—11/32 in.
—
Ring Terminal—#10
—
Insulated 1/4 in. Male Terminal
1
2
4
8
Description
Vacuum Hose
Snap Bushing
5
7
6
8
9
Qty.
1
1
1
1
1
1
2
1
2
4
3
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