Heatilator • LM42 • Installers Manual • 4087-901 • Rev A • 04/14/16
38
Section 8
Firebox
Repack
insulation
knockout
Combustible
materials
Maintain air clearance
to combustibles.
Gas line
Combustible materials
may be located at zero
clearance to gas line
beyond 4 in. (102 mm)
from fireplace side.
Gas line
1 1/2 in. (38 mm)
air space around
pipe
Refractory
Seal with
fireplace mortar
or non-combust-
ible sealant
4 in.
(102 mm)
Outer shell
of fireplace
Figure 8.1 Gas Line Installation
A. Gas Log/Lighter Provision
WARNING! Fire and/or Asphyxiation Risk!
Use with
solid wood fuel or decorative gas logs only. Gas fire gen
-
erates fumes.
•
DO NOT
install unvented gas logs
• Damper must be locked fully open when gas logs are
installed
• Read and follow gas log instructions
8
Fireplace Accessories
Gas Log Sets
Gas Log Lighters
WARNING!
THIS FIREPLACE HAS NOT BEEN TESTED
WITH AN UNVENTED GAS LOG SET.
TO REDUCE RISK
OF FIRE OR INJURY, DO NOT INSTALL AN UNVENTED
GAS LOG SET INTO THIS FIREPLACE.
CAUTION! Risk of Fire!
WHEN USING THE DECORA-
TIVE LOG SET, THE FIREPLACE DAMPER MUST BE
SET IN THE FULLY OPEN POSITION.
A certified gas log lighter or decorative gas log set can be
installed in this fireplace.
• Maximum input is 100,000 BTU/hr.
• Decorative gas appliance must be certified to
ANSI
Z21.60/CSA 2.26
“Standard for Decorative Gas
Appliances for Installation in Vented Fireplaces”.
• Must be installed in accordance with the
National Fuel
Gas Code, ANSI Z223.1 and Natural Gas Installation
Code, CAN/CGA-B149.1-M95 or the Propane
Installation Code, CAN/CGA-B149.2-M95.
• A gas log set must incorporate a gas shutoff.
• Gas Log set requires the damper to be locked fully open.
• Although knockouts are provided on both sides of the
fireplace and in refractories for 1/2 in. (13 mm) iron pipe,
the gas line must come in on the left side only if using
LMGL-MD Gas Log Set.
-Remove side stone and turn end for end to show
knockout.
• Seal refractory around pipe with fireplace mortar or a
non-combustible sealant.