8 Heat & Glo • ATS-AU-D • 327-900 Rev. D • 2/06
WARNING: THIS GAS FIREPLACE AND FLUE
ASSEMBLY MUST BE FLUED DIRECTLY TO THE
OUTSIDE AND MUST NEVER BE ATTACHED TO A
CHIMNEY SERVING A SEPARATE SOLID FUEL
BURNING APPLIANCE. EACH GAS APPLIANCE
MUST USE A SEPARATE FLUE SYSTEM.
CAUTION: Prior to connecting the flue system to
the unit, read sections:
1.3 Connecting the Gas Supply
1.4 Fan
1.2 FLUE SYSTEM
1.2.1 FLUE SYSTEM APPROVALS
Table1 andFigures3-5 show thefluetermination caps
and systems approved for use with this model. Ap-
provedflue systemterminations arelabeled for identi-
fication. 3.3 inch (84mm) diameter listed flexible alu-
minum or stainless steel gas flue is used for both the
incoming combustion air and exhaust flue pipes. NO
OTHER FLUEING SYSTEMS OR COMPONENTS
MAY BE USED. Detailed installation instructions are
included with each flue termination kit and should be
used in conjunction with this manual.
HORIZONTAL FLUEING
Thefluesystem on thismodelCANNOT beterminated
horizontally.
VERTICAL FLUEING
The flue pipes MUST be connected to the proper col-
lars on the unit AND the exhaust flue pipe MUST be
connected to the termination cap or the unit will not
operate. The combustion air flue pipe MUST be con-
nected to the termination cap.
NOTE: The minimum vertical rise (exhaust flue) is
10 feet (3M) and the maximum vertical rise is 40 feet
(10M).These dimensions aremeasuredfromthe start-
ing collars of the unit to the end of the last section of
flue pipe (See dimension V in Figure 3).
A vertical flue termination system installed on this
model will include one (1) length of 3.3 inch (84mm)
flexibleflue pipe for the combustionair, one(1) length
of 3.3 inch (84mm) flexible flue pipe for the exhaust,
one(1) LINK-DV30BVertical Termination Kit.
1.0 INSTALLATION INSTRUCTIONS
1.1 INTRODUCTION
This model is designed to operate with all combustion
airbeing siphonedfrom theoutside ofthe buildingand
all exhaust gases expelled to the outside of the build-
ing. This model is designed to be installed in a ma-
sonry fireplace or factory built fireplace. These units
CANNOTberecessedinsidecombustibleconstruction.
Minimum dimensions of the masonry or factory-built
fireplaceinto which these models can be installed, are
321/8-inches(816mm) width x131/2-inches (343mm)
depth x 20 1/2 inches (521mm) height.
WARNING: THISUNIT ISNOTFOR USEWITHSOLID
FUEL.
This unit MUST use the flue termination described in
the flueing section of the manual.
The control system for this model is a millivolt type. It
consists of a gas control valve/variable regulator, a
standingpilot/thermopile/thermocouple,apiezo ignitor,
and an ON/OFF switch. The controls are located be-
hind the lower grille. Access to the controls is gained
by rotating the grille up. ON/OFF switch is located on
the front surround. See Figures 1 and 7.
Minimuminlet gas supplypressure for purposeof input
adjustmentis 4.5 inches w.c. (1.13kPa)fornatural gas
and 11 inches w.c. (2.75kPa) for propane. Manifold
(outlet) pressures should be set at 3.2 inches w.c.
(.80kPa) for natural gas models and 9.6 inches w.c.
(2.40kPa) forpropanemodels.
Inplanning the installation for the insertit isnecessary
to determine where the unit is to be installed, and
whetheroptional accessories(wall switch,thermostat,
orremote control)aredesired.Gassupply pipingshould
also be planned. Model ATS-AU-D has a factory in-
stalledfan.
This model is designed to be installed in a masonry or
factory-built fireplace. The separate 3.3 inch (84mm)
combustion air and exhaust pipes must be run up
throughthechimneyand terminated vertically. Horizon-
tal flue terminations MUST NOT be done.
Before starting installation of flue kits, the installer
shouldreadtheGas Fireplace Instructions andtheFlue
Kit Instructions to ensure that a proper flue installation
is completed.
Consultyourlocal BuildingCodesbefore beginning the
installation.
