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UNVENTED (VENT-FREE) GAS LOG HEAT ER
OWNER’S OP ER A TION AND IN STAL LA TION MANUAL
Design Dynamics Vent-free Mod els Also De sign-Cer ti fi ed As Vented Dec o ra tive Ap pli anc es
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WARNING: If the information in this man u al
is not followed exactly, a fi re or explosion
may result caus ing prop er ty damage, per-
son al in ju ry, or loss of life.
— Do not store or use gasoline or other
fl ammable vapors and liq uids in the vicinity
of this or any other ap pli ance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not
use any phone in your build ing.
• Immediately call your gas sup pli er from
a neigh bor’s phone. Follow the gas sup-
pli er’s in struc tions.
• If you cannot reach your gas sup plier, call
the fi re de part ment.
— Installation and service must be per formed
by a qualifi ed installer, ser vice agen cy, or
the gas supplier.
WARNING: Improper in stal la tion, ad just -
ment, al tera tion, service, or main te nance
can cause injury or prop er ty dam age. Re fer
to this man u al for cor rect in stal la tion and
op er a tion al pro ce dures. For as sis tance
or ad di tional in for ma tion con sult a quali-
fi ed in stall er, ser vice agen cy, or the gas
sup plier.
WARNING: This appliance is for in stal -
la tion only in a solid-fuel burning masonry
or UL127 factory-built fi replace, or in an
ap proved ventless fi rebox. It is design-
cer ti fi ed for these installations in ac cor -
dance with ANSI Z21.11.2. Exception: Do
not in stall this ap pli ance in a factory-built
fi re place that in cludes instructions stat ing
it has not been tested or should not be
used with unvented gas logs.
WARNING: This is an unvented gas-fi red heat er. It uses air (ox y gen) from the room in which it
is installed. Pro vi sions for ad e quate com bus tion and ven ti la tion air must be pro vid ed. Refer
to Air for Com bus tion and Ven ti la tion sec tion on page 4 of this manual.
This appliance may be installed in an aftermarket,* manufactured (mobile) home, where not
pro hib it ed by local codes.
This appliance is only for use with the type of gas indicated on the rating plate. This ap pli ance
is not convertible for use with other gases.
* Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer
Warning: This product must be installed by a Licensed Plumber or Gas Fitter when installed
within The Commonwealth of Massachusetts.
VF-24N-PDG, VF-24P-PDG,
VF-18N-PDG, VF-18P-PDG
VF-24N-BTB, VF-24P-BTB,
VF-18N-BTB, VF-18P-BTB
For more information, visit www.desatech.com