Fireplace Preparation - Monessen Hearth NB18 Installation And Operating Instructions Manual

FIREPLACE PREPARATION

Before installing in a solid fuel burning fireplace, The chimney flue and
firebox must be cleaned of soot, creosote, ashes and loose paint by a
qualified chimney cleaner.
This appliance is for installation only in a solid fuel burning fireplace
(masonry fireplace or manufactured fireplace) with a working flue and
constructed of noncombustible material.
Exception: DO NOT install this appliance in a factory-built fireplace
that includes instructions stating that it has not been tested or should
not be used with unvented gas logs. This log set may be installed as a
vented log set.
BEFORE FULLY INSTALLING THE UNIT:
•
Turn OFF the gas supply to the fireplace or firebox.
•
Seal any fresh air vents and/or ash clean-out doors
located on the floor or wall of the fireplace. If left
unsealed, drafting may cause pilot outage or soot-
ing. Use a heat resistant sealant. Do not seal the
chimney flue damper.
INSTALLING VENTED APPLICATIONS -
NB & NBSC ONLY
Manual and millivolt controlled gas logs may be installed
as a vented decorative log set in compliance with ANSI
Z21.60 and National Fuel Gas Code, Section 6.6. Since,
the gas logs are operated with the damper open, non-
combustible material and minimum mantel require-
ments do not apply.
Before installing the appliance:
•
Turn off gas supply to fireplace or firebox.
•
Have the fireplace floor and chimney professionally
cleaned to remove ashes, soot, creosote or other
obstructions. Have this cleaning performed annually
after installation.
•
Seal any fresh air vents or ash clean-out doors
located on floor or wall of fireplace. If not, drafting
may cause pilot outage or sooting. Use a heat-resis-
tant sealant.
81D0107
Install and operate the appliance as directed in this
manual.
DAMPER STOP INSTALLATION
A damper stop must be provided with the unit. Contact your
dealer to obtain one. The damper stop must be installed as
shown in Figure 12 to prevent full closure of the fireplace
damper blade and provide a minimum 29 square inch flue
opening.
FP2263
Figure 12 -
Damper Stop Installation.
FP2263
Damper stop install
NB18/NB24 Gas Log Set
Damper Stop
Damper
11