Heatilator GDST5244I User manual

Heatilator • GDST5244I • 4045-127 Rev Q • 02/07 1
Owner’s Manual
Installation and Operation
Models:
GDST5244I
GDST5244IL
See-Through
Direct Vent Gas Appliance
Installation and service of this appliance should be performed
by qualified personnel. Hearth & Home Technologies
suggests NFI certified or factory-trained
professionals, or technicians supervised
by an NFI certified professional.
HOT! DO NOT TOUCH.
SEVERE BURNS MAY RESULT.
CLOTHING IGNITION MAY RESULT.
WARNING
• Keep children away.
• CAREFULLY SUPERVISE children in same room as
appliance.
• Alert children and adults to hazards of high
temperatures.
• Do NOT operate with protective barriers removed or
door open.
• Keep clothing, furniture, draperies and other
combustibles away.
Glass and other surfaces are hot during
operation and cool down.
This appliance has been supplied with an integral barrier to
prevent direct contact with the fixed glass panel. Do NOT
operate the appliance with the barrier removed.
Contact your dealer or Hearth & Home Technologies if the bar-
rier is not present or help is needed to properly install one.
This appliance may be installed as an OEM installation
in manufactured home (USA only) or mobile home and
must be installed in accordance with the manufacturer’s
instructions and the manufactured home construction and
safety standard, Title 24 CFR, Part 3280 or Standard for
Installation in Mobile Homes, CAN/CSA Z240MH.
This appliance is only for use with the type(s) of gas
indicated on the rating plate.
DO NOT DISCARD THIS MANUAL
CAUTION
• Important operating and
maintenance instructions
included.
• Leave this manual with
party responsible for
use and operation.
• Read, understand and follow
these instructions for safe
installation and operation.
DO NOT
DISCARD
In the Commonwealth of Massachusetts:
• installation must be performed by a licensed plumber
or gas fitter;
See Table of Contents for location of additional Common-
wealth of Massachusetts requirements.
If the information in these instruc-
tions is not followed exactly, a
fire may result causing property
damage, personal injury, or death.
• Do not store or use gasoline or other flam-
mable vapors and liquids in the vicinity of
this or any other appliance.
• 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 building.
- Immediately call your gas supplier from
a neighbor’s phone. Follow the gas
supplier’s instructions.
- If you cannot reach your gas supplier, call
the fire department.
• Installation and service must be performed
by a qualified installer, service agency, or
the gas supplier.
WARNING

2 Heatilator • GDST5244I • 4045-127 Rev Q • 02/07
Read this manual before installing or operating this appliance.
Please retain this owner’s manual for future reference.
Congratulations on selecting a Heatilator gas appliance—an
elegant and clean alternative to wood burning appliances.
The Heatilator gas appliance you have selected is designed
to provide the utmost in safety, reliability, and efficiency.
As the owner of a new appliance, you’ll want to read and
carefully follow all of the instructions contained in this owner’s
manual. Pay special attention to all cautions and warnings.
This owner’s manual should be retained for future reference.
We suggest you keep it with your other important documents
and product manuals.
The information contained in this owner’s manual, unless
noted otherwise, applies to all models and gas control
systems.
Your new Heatilator gas appliance will give you years of
durable use and trouble-free enjoyment. Welcome to the
Heatilator family of appliance products!
Homeowner Reference Information
Model Name: Date purchased/installed:
Serial Number: Location on appliance:
Dealership purchased from: Dealer phone:
Notes:
We recommend that you record the following pertinent
information about your appliance:
Listing Label Information/Location
The model information regarding your specific appliance can be found on the rating plate located in the control area of the
appliance.
Congratulations
XXXX
CERTIFIED
FOR CANADA
CERTIFIÉ POUR LE
CANADA
Hearth & Home Technologies Inc
1915 W. Saunders Street
Mt. Pleasant, IA 52641
SERIAL
NO. DE SÉRIE
ANSI Standard
MODEL MFG. DATE
MODÈLE DATE DE FAB.
GAS TYPE/TYPE DE GAZ NATURAL/NATUREL PROPANE
ALTITUDE 0-2000 2000-4000 FT/PI 0-2000 2000-4000 FT/PI
MAX INPUT/DÉBIT XX,XXX XX,XXX BTUH XX,XXX XX,XXX BTUH
MIN INPUT/DÉBIT XX,XXX XX,XXX BTUH XX,XXX XX,XXX BTUH
MANIFOLD PRESSURE/PRESSION TUBULAIRE
MAX. XX IN. W.C./C. D'EAU XX IN. W.C./C. D'EAU
MIN. XX IN. W.C./C. D'EAU XX IN. W.C./C. D'EAU
MIN. INLET PRESS. XX IN. W.C./C. D'EAU 1XX IN. W.C./C. D'EAU
FOR THE PURPOSE OF INPUT ADJUSTMENT
PRESS. MIN. D'ALIMENTATION
ORIFICE SIZE
DIAM. DE L'INJECTEUR XX/XX DIA. in./mm XX/XX DIA. in./mm
LESS THAN/MOINS DE 3 AMPÈRES., 115V., 60 Hz
DO NOT REMOVE OR COVER THIS LABEL.
VENTED GAS FIREPLACE - NOT FOR USE WITH SOLID FUEL.
FOYER À GAZ À ÉVACUATION - NE DOIT PAS ÊTRE UTILISÉ
AVEC UN COMBUSTIBLE SOLIDE.
XXXXXXXXX
XXXXXX
Serial #
Gas Type
Orifice
Size
Model #

Heatilator • GDST5244I • 4045-127 Rev Q • 02/07 3
Table of Contents
1 Listing and Code Approvals 4
A. Appliance Certification. . . . . . . . . . . . . . . . . . . . . . . . . 4
B. Glass Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 4
C. BTU Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
D. High Altitude Installations . . . . . . . . . . . . . . . . . . . . . . 4
E. Non-Combustible Materials . . . . . . . . . . . . . . . . . . . . . 4
F. Combustible Materials. . . . . . . . . . . . . . . . . . . . . . . . . 4
G. Requirements for the
Commonwealth of Massachusetts. . . . . . . . . . . . . . . . 5
2 Getting Started 6
A. Design and Installation Considerations . . . . . . . . . . . . 6
B. Tools and Supplies Needed. . . . . . . . . . . . . . . . . . . . . 6
C. Inspect the Appliance and Components . . . . . . . . . . . 6
3 Framing and Clearances 7
A. Select Appliance Location . . . . . . . . . . . . . . . . . . . . . . 7
B. Construct the Appliance Chase . . . . . . . . . . . . . . . . . . 8
C. Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
D. Mantel Projections . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4 Termination Locations 11
A. Vent Termination Minimum Clearances . . . . . . . . . . . 11
5 Vent Information and Diagrams 13
A. Vent Table Key. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
B. Use of Elbows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
C. Measuring Standards. . . . . . . . . . . . . . . . . . . . . . . . . 13
D. Vent Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6 Vent Clearances and Framing 19
A. Pipe Clearances to Combustibles . . . . . . . . . . . . . . . 19
B. Wall Penetration Framing . . . . . . . . . . . . . . . . . . . . . 19
C. Vertical Penetration Framing . . . . . . . . . . . . . . . . . . . 20
7 Appliance Preparation 21
A. Securing and Leveling the Appliance . . . . . . . . . . . . 21
8 Installing Vent Pipe 22
A. Assemble Vent Sections . . . . . . . . . . . . . . . . . . . . . . 22
B. Disassemble Vent Sections . . . . . . . . . . . . . . . . . . . . 24
C. Install Heat Shield and Horizontal Termination Cap . 25
D. Install Roof Flashing and Vertical Termination Cap . . 26
E. Assemble and Install Storm Collar . . . . . . . . . . . . . . 27
9 Gas Information 28
A. Fuel Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
B. Gas Pressure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
C. Gas Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
D. High Altitude Installations . . . . . . . . . . . . . . . . . . . . . 29
10 Electrical Information 30
A. Recommendation for Wire. . . . . . . . . . . . . . . . . . . . . 30
B. Connecting to the Appliance . . . . . . . . . . . . . . . . . . . 30
C. Intellifire Ignition System Wiring . . . . . . . . . . . . . . . . 30
D. Junction Box Installation . . . . . . . . . . . . . . . . . . . . . . 32
E. Wall Switch Installation for Fan (Optional). . . . . . . . . 32
11 Finishing 33
A. Mantel Projections. . . . . . . . . . . . . . . . . . . . . . . . . . . 33
B. Facing Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
12 Appliance Setup 34
A. Remove Glass Assembly. . . . . . . . . . . . . . . . . . . . . . 34
B. Remove the Shipping Materials. . . . . . . . . . . . . . . . . 34
C. Clean the Appliance. . . . . . . . . . . . . . . . . . . . . . . . . . 34
D. Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
E. Install the Log Set . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
F. Rockwool, Lava Rock, Vermiculite Placement . . . . . 37
G. Glass Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
H. Firescreen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
I. Grilles and Trim . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
J. Air Shutter Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
13 Operating Instructions 39
A. Before Operating This Appliance. . . . . . . . . . . . . . . . 39
B. Lighting the Appliance . . . . . . . . . . . . . . . . . . . . . . . . 40
C. After the Appliance is Lit . . . . . . . . . . . . . . . . . . . . . . 41
D. Frequently Asked Questions . . . . . . . . . . . . . . . . . . . 41
14 Troubleshooting 42
A. Intellifire Ignition System . . . . . . . . . . . . . . . . . . . . . . 42
15 Maintaining and Servicing the Appliance 44
16 Reference Materials 46
A. Appliance Dimension Diagram . . . . . . . . . . . . . . . . . 46
B. Vent Components Diagrams . . . . . . . . . . . . . . . . . . . 47
C. Service Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
D. Optional Components . . . . . . . . . . . . . . . . . . . . . . . . 56
E. Limited Lifetime Warranty . . . . . . . . . . . . . . . . . . . . . 59
F. Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Note: An arrow (¨) found in the text signifies change in content.

4 Heatilator • GDST5244I • 4045-127 Rev Q • 02/07
1
1 Listing and Code Approvals
A. Appliance Certification
This product is listed to ANSI standards for “Vented Gas
Fireplaces” and applicable sections of “Gas Burning Heating
Appliances for Manufactured Homes and Recreational Vehi-
cles”, and “Gas Fired Appliances for Use at High Altitudes”.
Do NOT use this appliance if any part has been under
water. Immediately call a qualified service technician
to inspect the appliance and to replace any part of the
control system and any gas control which has been
under water.
WARNING
MODELS: GDST5244I, GDST5244IL
LABORATORY: Underwriters Laboratories, Inc. (UL)
TYPE: Direct Vent Gas Appliance
STANDARD: ANSI Z21.88-2005/CSA2.33-2005•UL307B
NOT INTENDED FOR USE AS A PRIMARY HEAT
SOURCE. This appliance is tested and approved as either
supplemental room heat or as a decorative appliance. It
should not be factored as primary heat in residential heating
calculations.
Note: This installation must conform with local codes. In the
absence of local codes you must comply with the National
Fuel Gas Code, ANSI Z223.1-latest edition in the U.S.A.
and the CAN/CGA B149 Installation Codes in Canada.
B. Glass Specifications
Hearth & Home Technologies appliances manufactured with
tempered glass may be installed in hazardous locations such
as bathtub enclosures as defined by the Consumer Product
Safety Commission (CPSC). The tempered glass has been
tested and certified to the requirements of ANSI Z97.1 and
CPSC 16 CFR 1202 (Safety Glazing Certification Council
SGCC# 1595 and 1597. Architectural Testing, Inc. Reports
02-31919.01 and 02-31917.01).
This statement is in compliance with CPSC 16 CFR Section
1201.5 “Certification and labeling requirements” which refers
to 15 U.S. Code (USC) 2063 stating “…Such certificate shall
accompany the product or shall otherwise be furnished to
any distributor or retailer to whom the product is delivered.”
Some local building codes require the use of tempered glass
with permanent marking in such locations. Glass meeting
this requirement is available from the factory. Please contact
your dealer or distributor to order.
C. BTU Specifications
D. High Altitude Installations
U.L. Listed gas appliances are tested and approved without
requiring changes for elevations from 0 to 2000 feet in the
U.S.A. and Canada.
When installing this appliance at an elevation above 2000 ft,
it may be necessary to decrease the input rating by chang-
ing the existing burner orifice to a smaller size. Input rate
should be reduced by 4% for each 1000 ft above a 2000 ft
elevation in the U.S.A., or 10% for elevations between 2000
and 4500 ft in Canada. If the heating value of the gas has
been reduced, these rules do not apply. To identify the prop-
er orifice size, check with the local gas utility.
If installing this appliance at an elevation above 4500 ft (in
Canada), check with local authorities.
E. Non-Combustible Materials
Material which will not ignite and burn. Such materials are
those consisting entirely of steel, iron, brick, tile, concrete,
slate, glass or plasters, or any combination thereof.
Materials that are reported as passing ASTM E 136, Stan-
dard Test Method for Behavior of Materials in a Vertical
Tube Furnace at 750° C, shall be considered non-combus-
tible materials.
F. Combustible Materials
Materials made of or surfaced with wood, compressed pa-
per, plant fibers, plastics, or other material that can ignite and
burn, whether flame proofed or not, or whether plastered or
unplastered shall be considered combustible materials.
See Through GDST5244
IPI
Max/Min Input Rate (NG) 48,000/34,000
Orifice Size (NG) .136 in./3.45 mm
Max/Min Input Rate (LP) 43,000/31,600
Orifice Size (LP) .076 in./1.93 mm
¨

Heatilator • GDST5244I • 4045-127 Rev Q • 02/07 5
G. Requirements for the Commonwealth of
Massachusetts
NOTE: The following requirements reference various
Massachusetts and national codes not contained in this
document.
G. Requirements for the Commonwealth of
Massachusetts
For all side wall horizontally vented gas fueled equipment
installed in every dwelling, building or structure used in
whole or in part for residential purposes, including those
owned or operated by the Commonwealth and where the
side wall exhaust vent termination is less than seven (7)
feet above finished grade in the area of the venting, includ-
ing but not limited to decks and porches, the following
requirements shall be satisfied:
Installation of Carbon Monoxide Detectors
At the time of installation of the side wall horizontal vented
gas fueled equipment, the installing plumber or gas fitter
shall observe that a hard wired carbon monoxide detector
with an alarm and battery back-up is installed on the floor
level where the gas equipment is to be installed. In addition,
the installing plumber or gas fitter shall observe that a
battery operated or hard wired carbon monoxide detector
with an alarm is installed on each additional level of the
dwelling, building or structure served by the side wall
horizontal vented gas fueled equipment. It shall be the
responsibility of the property owner to secure the services
of qualified licensed professionals for the installation of hard
wired carbon monoxide detectors.
In the event that the side wall horizontally vented gas fueled
equipment is installed in a crawl space or an attic, the hard
wired carbon monoxide detector with alarm and battery
back-up may be installed on the next adjacent floor level.
In the event that the requirements of this subdivision can
not be met at the time of completion of installation, the
owner shall have a period of thirty (30) days to comply with
the above requirements; provided, however, that during
said thirty (30) day period, a battery operated carbon mon-
oxide detector with an alarm shall be installed.
Approved Carbon Monoxide Detectors
Each carbon monoxide detector as required in accordance
with the above provisions shall comply with NFPA 720 and
be ANSI/UL 2034 listed and IAS certified.
Signage
A metal or plastic identification plate shall be permanently
mounted to the exterior of the building at a minimum height
of eight (8) feet above grade directly in line with the exhaust
vent terminal for the horizontally vented gas fueled heating
appliance or equipment. The sign shall read, in print size no
less than one-half (1/2) inch in size, “GAS VENT
DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUC-
TIONS”.
Inspection
The state or local gas inspector of the side wall horizontally
vented gas fueled equipment shall not approve the installa-
tion unless, upon inspection, the inspector observes carbon
monoxide detectors and signage installed in accordance
with the provisions of 248 CMR 5.08(2)(a)1 through 4.
Exemptions
The following equipment is exempt from 248 CMR
5.08(2)(a)1 through 4:
MANUFACTURER REQUIREMENTS
Gas Equipment Venting System Provided
When the manufacturer of Product Approved side wall
horizontally vented gas equipment provides a venting
system design or venting system components with the
equipment, the instructions provided by the manufacturer
for installation of the equipment and the venting system
shall include:
A copy of all installation instructions for all Product
Approved side wall horizontally vented gas fueled equip-
ment, all venting instructions, all parts lists for venting
instructions, and/or all venting design instructions shall
remain with the appliance or equipment at the completion of
the installation.
See Gas Connection section for additional Common-
wealth of Massachusetts requirements.
• Detailed instructions for the installation of the venting
system design or the venting system components; and
• A complete parts list for the venting system design or
venting system.
• The equipment listed in Chapter 10 entitled “Equipment
Not Required To Be Vented” in the most current edition
of NFPA 54 as adopted by the Board; and
• Product Approved side wall horizontally vented gas
fueled equipment installed in a room or structure sepa-
rate from the dwelling, building or structure used in
whole or in part for residential purposes.
Gas Equipment Venting System NOT Provided
When the manufacturer of a Product Approved side wall
horizontally vented gas fueled equipment does not provide
the parts for venting the flue gases, but identifies “special
venting systems”, the following requirements shall be satis-
fied by the manufacturer:
• The referenced “special venting system” instructions
shall be included with the appliance or equipment
installation instructions; and
• The “special venting systems” shall be Product
Approved by the Board, and the instructions for that
system shall include a parts list and detailed installation
instructions.

6 Heatilator • GDST5244I • 4045-127 Rev Q • 02/07
A. Design and Installation Considerations
Heatilator direct vent gas appliances are designed to op-
erate with all combustion air siphoned from outside of the
building and all exhaust gases expelled to the outside. No
additional outside air source is required.
Check building codes prior to installation.
• Installation MUST comply with local, regional,
state and national codes and regulations.
• Consult insurance carrier, local building, fire
officials or authorities having jurisdiction about
restrictions, installation inspection, and permits.
CAUTION
When planning an appliance installation, it’s necessary to
determine the following information before installing:
• Where the appliance is to be installed.
• The vent system configuration to be used.
• Gas supply piping.
• Electrical wiring.
• Framing and finishing details.
• Whether optional accessories—devices such as a fan,
wall switch, or remote control—are desired.
B. Tools and Supplies Needed
Before beginning the installation be sure that the following
tools and building supplies are available.
Reciprocating saw Framing material
Pliers Hi temp caulking material
Hammer Gloves
Phillips screwdriver Framing square
Flat blade screwdriver Electric drill and bits (1/4 in.)
Plumb line Safety glasses
Level Manometer
Voltmeter Tape measure
Non-corrosive leak check solution
1/2 - 3/4 in. length, #6 or #8 Self-drilling screws
One 1/4 in. female connection (for optional fan).
Keep appliance dry.
• Mold or rust may cause
odors.
• Water may damage controls.
WARNING
C. Inspect the Appliance and Components
• Carefully remove the appliance and components from the
packaging.
• The vent system components and trim doors are shipped
in separate packages.
• The gas logs may be packaged separately and must be
field installed.
• Report to your dealer any parts damaged in shipment,
particularly the condition of the glass.
• Read all of the instructions before starting the
installation. Follow these instructions carefully
during the installation to ensure maximum safety and
benefit.
Inspect appliance and components for
damage. Damaged parts may impair safe
operation.
• Do NOT install damaged components.
• Do NOT install incomplete components.
• Do NOT install substitute components.
Report damaged parts to dealer.
WARNING
Hearth & Home Technologies disclaims any
responsibility for, and the warranty will be
voided by, the following actions:
• Installation and use of any damaged appliance or
vent system component.
• Modification of the appliance or vent system.
• Installation other than as instructed by Hearth & Home
Technologies.
• Improper positioning of the gas logs or the glass panel
assembly.
• Installation and/or use of any component part not
approved by Hearth & Home Technologies.
Any such action may cause a fire hazard.
WARNING
2
2 Getting Started

Heatilator • GDST5244I • 4045-127 Rev Q • 02/07 7
Note:
• Illustrations reflect typical installations and are FOR
DESIGN PURPOSES ONLY.
• Illustrations/diagrams are not drawn to scale.
• Actual installation may vary due to individual design
preference.
Fire Risk
Provide adequate clearance:
• Around air openings.
• For service access.
Locate appliance away from traffic areas.
WARNING
A. Select Appliance Location
When selecting a location for your appliance it is important to
consider the required clearances to walls (See Figure 3.1).
Note: For actual appliance dimensions refer to
Section 16.
53-1/8 in.
(1349 mm)
39 in.
(991 mm)
24 in.
(610 mm)
Note: You must maintain a 36 in. (914 mm)
clearance from the faces of the appliance to
combustible materials in any configuration. 1/2 in. (13 mm)
minimum
1/2 in. (13mm)
minimum
48 in. (219 mm)
maximum
53-1/8 in.
(1349 mm)
min.
53-1/8 in.
(1375 mm)
min.
Figure 3.1 Appliance Locations
3
3 Framing and Clearances

8 Heatilator • GDST5244I • 4045-127 Rev Q • 02/07
B. Construct the Appliance Chase
A chase is a vertical boxlike structure built to enclose the gas
appliance and/or its vent system. Vertical vents that run on
the outside of a building may be, but are not required to be,
installed inside a chase.
Construction of the chase may vary with the type of build-
ing. These instructions are not substitutes for the require-
ments of local building codes. Local building codes MUST
be checked.
Chases should be constructed in the manner of all outside
walls of the home to prevent cold air drafting problems. The
chase should not break the outside building envelope in any
manner.
Walls, ceiling, base plate and cantilever floor of the chase
should be insulated. Vapor and air infiltration barriers should
be installed in the chase as per regional codes for the rest
of the home. Additionally, in regions where cold air infiltation
may be an issue, the inside surfaces may be sheet rocked
and taped (or the use of an equivalent method) for maximum
air tightness.
To further prevent drafts, the firestops should be caulked with
high temperature caulk to seal gaps. Gas line holes and oth-
er openings should be caulked with high temperature caulk
or stuffed with unfaced insulation. If the appliance is being
installed on a cement slab, a layer of plywood be placed un-
derneath to prevent conducting cold up into the room.
Fire Risk
• Construct chase to all clearance
specifications in manual.
• Locate and install appliance to all
clearance specifications in manual.
WARNING

Heatilator • GDST5244I • 4045-127 Rev Q • 02/07 9
C. Clearances
Fire Risk
Odor Risk
• Install appliance on hard metal or wood
surfaces extending full width and depth
of appliance.
• Do NOT install appliance directly on
carpeting, vinyl, tile or any combustible
material other than wood.
WARNING
30 in. (762 mm)
to ceiling
0 in.
D
C
B
A
(top)
Drywall
1/2 in.
(13 mm)
0 in. TO LEVEL
OF STANDOFFS
Combustible Object
36 in.
(914 mm)
Combustible flooring may be installed
next to the front of the appliance.
Figure 3.2 Clearances to Combustibles
A
Rough Opening
Width
B
Rough Opening
Height
C
Rough Opening
Depth
D
Rough Opening
for Venting
in 53-1/8 44-1/2 23 10
mm 1349 1127 584 254
Note: If the inside of the framed cavity is to be finished,
the framing dimensions must include the finished surface.
If drywall is to be attached to the rear wall, the depth must
be measured from the drywall surface.
¨

10 Heatilator • GDST5244I • 4045-127 Rev Q • 02/07
Measured from top of fireplace opening (in inches)
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
4-5/8
6-1/4
7
7-3/4
8-1/2
9-1/4
10 10-3/4
11-1/2
12-1/4 13
13-3/4
14-1/2
15-1/4
16
16-3/4
30 in. minimum
to ceiling
Figure 3.3 Clearances to Mantels or Other Combustibles Above Appliance
0 in. min.
to perpendicular wall
A
4-5/8 in. (117 mm) min.
from fireplace opening
to perpendicular wall
B
48 in.
(1219 mm)
max.
Mantel Leg or
Perpendicular Wall
Top of
Appliance Drywall
A
B
Figure 3.4 Clearances to Mantel Legs or Wall Projections (Accept-
able on both sides of opening)
D. Mantel Projections
Fire Risk
• Comply with all minimum clearances to
combustibles as specified.
WARNING
• Framing or finishing material used on the front of, or
in front of, the appliance closer than the minimums
listed, must be constructed entirely of noncombustible
materials (i.e., steel studs, concrete board, etc.).
Failure to comply may cause fire.

Heatilator • GDST5244I • 4045-127 Rev Q • 02/07 11
Horizontal
overhang
12
X
20 in.
(508 mm)
Lowest
Discharge
Opening
Termination
Cap
Roof Pitch
is X / 12
Vertical
wall
H (min.) - Minimum height
from roof to lowest
discharge opening.
24 in. min.
(610 mm)
Roof Pitch H (Min.) Ft. Roof Pitch H (Min.) Ft.
Flat to 6/12 1.0* Over 11/12 to 12/12 4.0
Over 6/12 to 7/12 1.25* Over 12/12 to 14/12 5.0
Over 7/12 to 8/12 1.5* Over 14/12 to 16/12 6.0
Over 8/12 to 9/12 2.0* Over 16/12 to 18/12 7.0
Over 9/12 to 10/12 2.5 Over 18/12 to 20/12 7.5
Over 10/12 to 11/12 3.25 Over 20/12 to 21/12 8.0
* 3 ft. minimum in snow regions
Storm Collar
Roof
Flashing
A. Vent Termination Minimum Clearances
Fire Risk
Explosion Risk
• Do not pack air space with insulation or
other materials.
Maintain vent clearance to combustibles as
specified.
WARNING
Failure to keep insulation or other materials
away from vent pipe may cause fire.
Measure horizontal clearances from this surface.
Measure vertical clearances from this surface
Figure 4.1 Clearances from Cap Surfaces Figure 4.2
Minimum Height from Roof to Lowest Discharge Opening
(see Figure 4.4 for specific clearances)
A Gas Termination Wood or Fuel Oil Termination
B6 in. (152 mm) min. 20 in. (508 mm) min.
Direct Vent Gas, Wood or Fuel
Oil Termination
20 in.
(508 mm)
(minimum) to
Perpendicular
Wall
(gas only)
18 in.
(457 mm)
A
Gas
Termination
B
Termination Caps Staggered Height
Direct Vent Gas, Wood or Fuel
Oil Termination
20 in.
(508 mm)
(minimum) to
Perpendicular
Wall
(gas only)
Wood or
Gas Termination
20 in. min. *
(508 mm)
Termination Caps Same Height
* If using decorative cap cover(s), this distance may
need to be increased. Refer to the installation instruc-
tions supplied with the decorative cap cover.
Figure 4.3 Multiple Vertical Termination
Figure 4.2 specifies minimum vent heights for various
pitched roofs.
4
4 Termination Locations
¨

12 Heatilator • GDST5244I • 4045-127 Rev Q • 02/07
Figure 4.4 Minimum Clearances for Terminations
Dimension Descriptions
A Clearance above the ground, a veranda, porch, deck or balcony - 12
in. (30 cm) minimum. *
B Clearance to window or door that may be opened – 10,000 BTUs
or less, 6 in. (15 cm) minimum; 10,000-50,000 BTUs, 9 in. (23 cm)
minimum; over 50,000 BTUs, 12 in. (30 cm) minimum. *
C Clearance to permanently closed window – 12 in. (30 cm) minimum
- recommended to prevent condensation on window.
D Vertical clearance to ventilated soffit located above the termination
within a horizontal distance of 2 ft (60 cm) from the centerline of the
termination – 18 in. (46 cm) minimum. **
E Vertical clearance to unventilated soffit - 12 in. (30 cm) minimum. **
F Clearance to outside corner - 6 in. (15 cm) minimum.
G Clearance to inside corner - 6 in. (15 cm) minimum.
H Not to be installed above a meter/regulator assembly within 3 ft (90
cm) horizontally* from the center line of the regulator (Canada only)
I Clearance to service regulator vent outlet – 3 ft (.91 m) U.S. minimum
and 3 ft (.91 m) Canada minimum. *
J Clearance to non-mechanical air supply inlet into building or the
combustion air inlet to any other appliance – 9 in. (23 cm) U.S. minimum
and 12 in. (30 cm) Canada minimum. *
K Clearance to mechanical air supply inlet - 3 ft (.91 m) U.S. minimum
and 6 ft (1.8 m) Canada minimum. *
L Clearance above a paved sidewalk or paved driveway located on public
property - 7 ft (2.1 m) minimum.
A vent may not terminate directly above a sidewalk or paved driveway
which is located between two single family dwellings and serves both
dwellings.
M Clearance under veranda, porch, deck or balcony - 12 in. (30 cm)
minimum. * Recommended 30 in. (76 cm) for vinyl or plastic.
Only permitted if veranda, porch, deck or balcony is fully open on a
minimum of 2 sides beneath the floor. *
N Vertical clearance between two horizontal termination caps – 12 in.
(30 cm) minimum.
O Horizontal clearance between two horizontal termination caps – 12 in.
(30 cm) minimum.
P 6 in. - Non-vinyl sidewalls
12 in. – Vinyl sidewalls
Q 18 in. – Non-vinyl soffit and overhang
42 in. – Vinyl soffit and overhang
R 8 ft
D
E
B
LC
V
V
B
F
V
BV
V
B
X
A
J
Fixed
Fixed
Closed
Closed
M
VK X
RESTRICTION ZONE
RESTRICTION ZONE
(TERMINATION NOT
(TERMINATION NOT
ALLOWED)
ALLOWED)
AIR SUPPLY INLET
AIR SUPPLY INLET
X
GAS METER
GAS METER
V
TERMINATION CAP
TERMINATION CAP
H
B
Openable
Openable
Fixed
Fixed
Closed
Closed
V
I
V
O
N
QP
R
T
S
E
lectrical
Service
V
U
VU
V
W
D*
V
V
Alcove Clearances Clearances to Electrical Service
A
V
V
G
Measure horizontal clearances
from this surface.
Measure vertical clearances
from this surface
Smin. Tmax.
1 cap 3 ft 2 x S actual
2 caps 6 ft 1 x S actual
3 caps 9 ft 2/3 x S actual
4 caps 12 ft 1/2 x S actual
Smin = # term caps x 3 T max = (2/# term caps) x S (actual)
U 6 in. min. – Clearance from sides of electrical service.
W 12 in. min. – Clearance above electrical service.
* As specified in CGA B149 Installation Codes
Note: Local codes or regulations may require different clearances.
** Clearance required to vinyl soffit material – 30 in. (76 cm) minimum.
Note: Location of the vent termination must not interfere with access
to the electrical service.
WARNING!
In the U.S.: Vent system termination is NOT permitted in screened
porches. You must follow side wall, overhang and ground clearances
as stated in the instructions.
In Canada: Vent system termination is NOT permitted in screened
porches. Vent system termination is permitted in porch areas with two
or more sides open. You must follow all side wall, overhang and ground
clearances as stated in the instructions.
Hearth & Home Technologies assumes no responsibility for the improper
performance of the appliance when the venting system does not meet
these requirements.

Heatilator • GDST5244I • 4045-127 Rev Q • 02/07 13
A. Vent Table Key
The abbreviations listed in this vent table key are used in the
vent diagrams.
Symbol Description
V1First section (closest to appliance) of vertical length
V2Second section of vertical length
H1First section (closest to appliance) of horizontal length
H2Second section of horizontal length
Fire Risk
Explosion Risk
Asphyxiation Risk
Do NOT connect this gas appliance to a
chimney flue serving a separate solid-fuel
or gas burning appliance.
• Vent this appliance directly outside.
• Use separate vent system for this
appliance.
May impair safe operation of this appliance or
other appliances connected to the flue.
WARNING
B. Use of Elbows
Diagonal runs have both vertical and horizontal vent aspects
when calculating the effects. Use the rise for the vertical as-
pect and the run for the horizontal aspect (see Figure 5.1).
Two 45° elbows may be used in place of one 90° elbow. On
45° runs, 1 ft of diagonal is equal to 8-1/2 in. horizontal run
and 8-1/2 in. vertical run. A length of straight pipe is allowed
between two 45° elbows (see Figure 5.1).
ALL vent configuration specifications MUST be
followed.
• This product is tested and listed to these
specifications.
• Appliance performance will suffer if specifications
are not followed.
CAUTION
C. Measuring Standards
Vertical and horizontal measurements listed in the vent dia-
grams were made using the following standards.
• Pipe measurements are shown using the effective length
of pipe (see Figure 5.2).
• Measurements are made from the appliance outer wrap,
not from the standoffs.
• Horizontal terminations are measured to the outside
mounting surface (flange of termination cap) (see
Figure 4.1).
• Vertical terminations are measured to top of last pipe
before termination cap.
• Horizontal pipe installed level with no rise.
Horizontal
Vertical
8-1/2 in.
8-1/2 in.
12 in.
Figure 5.1 Using Two 45° Elbows
Effective
Length
DVP Pipe
(see chart)
Pipe Effective Length
DVP4 4 in. (102 mm)
DVP6 6 in. (152 mm)
DVP12 12 in. (305 mm)
DVP24 24 in. (610 mm)
DVP36 36 in. (914 mm)
DVP48 48 in. (1219 mm)
DVP6A 3 to 6 in. (76 to 152 mm)
DVP12A 3 to 12 in. (76 to 305 mm)
DVP12MI 3 to 12 in. (76 to 305 mm)
DVP24MI 3 to 24 in. (76 to 610 mm)
Figure 5.2 DVP Pipe Effective Length
5
5 Vent Information and Diagrams

14 Heatilator • GDST5244I • 4045-127 Rev Q • 02/07
Fire Risk
Explosion Risk
Do NOT pack insulation or other combustibles between firestops.
• ALWAYS maintain specified clearances around venting and firestop systems.
• Install firestops as specified.
Failure to keep insulation or other material away from vent pipe may cause fire.
WARNING
D. Vent Diagrams
The first 90° elbow MUST be a starter elbow.
To replace the first starter elbow with two 45° elbows, refer to Figure 5.4 All other 90° elbows can be replaced with two 45°
elbows.
General Rules:
•SUBTRACT 3 ft from the total H measurement for each 90° elbow installed horizontally.
SUBTRACT 1-1/2 ft from the total H measurement for each 45° elbow installed horizontally.
•A maximum of three 90° elbows (or six 45° elbows) may be used in any vent configuration. Some elbows may be installed
horizontally. See Figure 5.6.
•Elbows may be placed back to back anywhere in the system as long as the first 90° elbow is a starter elbow except as
shown in Figure 5.4.
• Horizontal runs of vent do not require vertical rise; horizontal runs my be level.
Table 5.1
V1min. V1max. H1 max.
12 in./305 mm - 32 in./813 mm
18 in./457 mm - 18 ft/5.49 m
24 in./610 mm - 25 ft/7.62 m
- 25 ft/7.62 m 25 ft/7.62 m
H1
V1
Figure 5.3 Top Vent-Horiztonal Termination-One Elbow
Top Vent—Horizontal Termination—One Elbow

Heatilator • GDST5244I • 4045-127 Rev Q • 02/07 15
Top Vent—Horizontal Termination—Two 45° Elbows
Installation requirements to replace the first 90° elbow with two 45° elbows:
4 ft min.
(1.22 m)
25 ft max.
(7.62 m)
Figure 5.4 Minimum Installation Requirements for Two 45° Elbows-
Top Vent-Horizontal Termination
Top Vent—Horizontal Termination—Three Vertical Elbows
See Figure 5.6 for information about installing elbows horizontally.
H1
V1
V2
H2
Installed
Vertically
Figure 5.5 Three Vertically Installed 90° Elbows
Table 5.2
V1min. V1+V2max. H1+H2 max.
12 in./305 mm 24 ft/7.32 m 19 ft/5.79 m

16 Heatilator • GDST5244I • 4045-127 Rev Q • 02/07
You may use a maximum of three 90° elbows (or six 45° elbows) in any vent configuration, Some may be installed
horizontally.
Figure 5.6 Two or Three Elbows, some Horizontal
Note: Subtract 3 ft (914 mm) from the total horizontal
measurement for each 90° elbow installed horizontally.
Subtract 1-1/2 ft (457 mm) from the total horizontal
measurement for each 45° elbow installed horizontally.
Table 5.3
V1min. V1max. H1+H2max. H1+H2+H3max.
18 in./457 mm x 18 ft/5.49 m 18 ft/5.49 m
24 in./610 mm x 25 ft/7.62 m 25 ft/7.62 m
x 25 ft/7.62 m 25 ft/7.62 m 25 ft/7.62 m
H1V1
H2
H3
Installed
Horizontally
Installed
Vertically
H2
Top Vent--Horizontal Termina6tion--Two or three Elbows

Heatilator • GDST5244I • 4045-127 Rev Q • 02/07 17
12 ft (3.66 mm) min.
60 ft (18.29 m) max.
Top Vent—Vertical Termination—No Elbows
Top Vent—Vertical Termination—Two Elbows
Figure 5.7 Vertical Termination - No Elbows
12 ft (3.66 m) min.
60 ft (18.29 m) max.
Maximum
horizontal run is
100% of vertical,
but cannot
exceed
26 ft (7.92 m)
Figure 5.10 Vertical Termination - Two Elbows
Figure 5.8 12 ft to 30 ft Vertical Run
Figure 5.9 31 ft to 60 ft Vertical Run
Install Baffle
• Remove screws from flue (firebox top).
• Using the screws removed, Install baffle according to your
installation requirements. See Figures 5.8 and 5.9.

18 Heatilator • GDST5244I • 4045-127 Rev Q • 02/07
Top Vent—Vertical Termination—Three Elbows
12 ft (3.66 m) min.
60 ft (18.29 m) max.
Maximum horizontal run is
100% of vertical, but cannot
exceed 26 ft (7.92 m)
Figure 5.11 Vertical Termination - Three Elbows (some horizontal)
Note: Subtract 3 ft (914 mm) from the total horizontal
measurement for each 90° elbow installed horizontally.
Subtract 1-1/2 ft (457 mm) from the total horizontal
measurement for each 45° elbow installed horizontally.

Heatilator • GDST5244I • 4045-127 Rev Q • 02/07 19
3 in. (76 mm)
Top Clearance
1 in. (25 mm) Side
and Bottom Clearance
1 in. (25 mm)
Clearance Around
Vertical Sections
B. Wall Penetration Framing
• Frame a hole in a combustible wall for an interior wall
shield firestop (Figures 6.1 and 6.2) whenever a wall is
penetrated. Use same size framing materials as those
used in the wall construction. The wall shield firestop
maintains minimum clearances and prevents cold air
infiltration.
• If the hole being penetrated is surrounded by non-
combustible materials such as concrete, a hole with
diameter 1 in. greater than the pipe is acceptable.
A. Pipe Clearances to Combustibles
Fire Risk
Explosion Risk
Maintain vent clearance to combustibles as
specified.
• Do not pack air space with insulation or
other materials.
Failure to keep insulation or other materials
away from vent pipe may cause fire.
WARNING
Figure 6.1 Pipe Clearances
3 in. (76 mm) top
clearance
1 in. (25 mm)
clearance
bottom & sides
Wall
Shield
Firestop
Heat
Shield
WALL
12 in.
(305 mm)
min.
Heat
Shield
Note: Heat shields MUST overlap by a minimum of 1-1/2 in. (38 mm). The
heat shield is designed to be used on a wall 4 in. to 7-1/4 in. (102 mm
to 184 mm) thick. If wall thickness is less than 4 in. (102 mm) the existing
heat shields must be field trimmed. If wall thickness is greater than 7-1/4 in.
(184 mm) a DVP-HSM-B will be required.
Figure 6.2 Horizontal Venting Clearances to Combustible Materials
* 62-3/4 in.
(1594 mm)
Framing should be
constructed of 2 X 4
lumber or heavier.
The center of the
framing hole is
1 in. (25mm) above
the center of the
horizontal vent pipe.
6ENTFRAMINGHOLE
$/./40!#+7)4(
).35,!4)/./2
/4(%2-!4%2)!,
* Measured to
center of pipe.
10 in.
12 in.
Figure 6.3 Exterior Wall Hole
6
6 Vent Clearances and Framing

20 Heatilator • GDST5244I • 4045-127 Rev Q • 02/07
C. Vertical Penetration Framing
Install Attic Insulation Shield
• Frame opening for attic insulation shield.
• Attic insulation shield may be installed above or below
ceiling (see Figure 6.5).
• Secure with three fasteners on each side.
• Fold tabs at top of attic shield in toward vent pipe. Tabs
must keep vent pipe centered within shield.
• Field construct additional shield height if insulation is
deeper than height of attic shield.
Attic Above
10 in.
(254 mm)
10 in. (254 mm)
Hole should
measure
10 in. x 10 in.
(254 mm x 254 mm)
(inside to inside)
Figure 6.4 Installing Ceiling Firestop
3 fasteners
per side
Attic insulation shield
installed below ceiling.
Attic insulation shield
installed above ceiling.
Bend tabs in
around pipe
Figure 6.5 Installing the Attic Insulation Shield
Fire Risk
Keep loose materials or blown insulation
from touching the vent pipe.
• National building codes recommend using
attic shield to keep loose materials/blown
insulation from contacting vent.
• Hearth & Home Technologies requires
the use of an attic shield.
WARNING
Install the Ceiling Firestop
• Frame an opening 10 in. by 10 in. whenever the vent
system penetrates a ceiling/floor (see Figure 6.4).
• Frame the area with the same sized lumber as used in
ceiling/floor joist.
• When installing a top vent vertical termination appliance
the hole should be directly above the appliance, unless
the flue is offset.
• Do not pack insulation around the vent. Insulation must
be kept away from the pipe.
Note: An additional ceiling firestop is not required if attic
insulation shield is used.