Heatilator A36R User manual

Heatilator • A36/42R, A36/42RH • Installers Manual • 4017-259 • Rev I • 06/29/15 1
WOODBURNING FIREPLACE
Fire Risk.
WARNING
For use with solid wood fuel only.
Other fuels may overre and generate
poisonous gases (i.e. carbon monoxide).
Model(s):
Installation Manual
Installation and Fireplace Setup
WARNING
HOT SURFACES!
Glass and other surfaces are hot during
operation AND cool down.
Hot glass will cause burns.
• DO NOT touch glass until it is cooled
• NEVER allow children to touch glass
• Keep children away
• CAREFULLY SUPERVISE children in same room as
replace.
• Alert children and adults to hazards of high temperatures.
High temperatures may ignite clothing or other ammable
materials.
• Keep clothing, furniture, draperies and other ammable
materials away.
INSTALLER: Leave this manual with party responsible for use and operation.
OWNER: Retain this manual for future reference.
A36R, A36RH
A42R, A42RH
NOTICE: DO NOT discard this manual!
• DO NOT store or use gasoline or other am-
mable vapors and liquids in the vicinity of this
or any other appliance.
• DO NOT overre. Overring will void your
warranty.
• Comply with all minimum clearances to com-
bustibles as specied. Failure to comply may
cause house re.
WARNING: If the information in these
instructions is not followed exactly, a re
or explosion may result causing property
damage, personal injury, or death.
Installation and service of this
appliance should be performed by
qualied personnel. Hearth & Home
Technologies recommends HHT
Factory Trained or NFI certified
professionals.

Heatilator • A36/42R, A36/42RH • Installers Manual • 4017-259 • Rev I • 06/29/15
2
Safety Alert Key:
• DANGER! Indicates a hazardous situation which, if not avoided will result in death or serious injury.
• WARNING! Indicates a hazardous situation which, if not avoided could result in death or serious injury.
• CAUTION! Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
• NOTICE: Indicates practices which may cause damage to the replace or to property.
Table of Contents
1 Product Specic & Important Safety Information
A. Fireplace Certication 4
B. Non-Combustible Materials 4
C. Combustible Materials 4
2 Getting Started
A. Typical Fireplace System 5
B. Design and Installation Considerations 6
1. Selecting Fireplace Locations 6
2. Locating Fireplace & Chimney 7
C. Tools and Supplies Needed 8
D. Inspect Fireplace and Components 8
E. Fireplace System Requirements 8
3 Framing and Clearances
A. Fireplace Dimensions 9
B. Clearances 10
Minimum Clearances to Combustibles 10
C. Construct the Chase 11
D. Frame the Fireplace 12
E. Secure and Level the Fireplace 12
F. Protective Metal Hearth Strips 13
G. Outside Air Kit (optional) 14
4 Chimney and Termination Requirements
A. Chimney Requirements 15
B. Offsets/Returns 16
C. Termination Requirements 17
5 Chimney Installation
A. Typical Chimney System 18
B. Assemble Chimney Sections 19
C. Secure Offset/Return 20
D. Install Ceiling Firestops 20
E. Install Attic Insulation Shield 21
F. Roof Penetration 22
G. Install Chase/Chase Top 22
H. Termination Cap Requirements 23
I. Install Termination Cap 23
6 Shrouds
A. Radiation Shield 25
B. Field Constructed Shrouds 25
1. Open Top Shroud 25
2. Mailbox Style Shroud 26
3. Roofed Style Shroud 26
7 Finishing
A. Finishing Material 27
B. Hearth Extension, Building and Finishing 28
1. Fireplace Installed Flush on the Floor
and Hearth Extension Raised to Bottom
of Firebox Opening 29
2. Raised Hearth Extension and Raised Fireplace 30
3. Fireplace Opening and Hearth Extension Flush
with the Floor 31
C. Non-Combustible Sealant Material 31
D. Mantel and Wall Projections 32
E. Sidewalls/Surrounds 33
8 Fireplace Setup
A. Gas Log/Lighter Provision 34
B. Wood Burning Inserts 34
9 Reference Materials
A. Chimney Components 35
B. Optional Components 39
►

Heatilator • A36/42R, A36/42RH • Installers Manual • 4017-259 • Rev I • 06/29/15 3
Customer:
Lot/Address
Model (circle one): A36R A36RH
A42R A42RH
YES IF NO, WHY?
Dealer/Distributor Phone #
Serial #:
Roof flashing installed.
Termination installed.
Fireplace Install
ATTENTION INSTALLER:
Follow this Standard Work Checklist
This standard work checklist is to be used by the installer in conjuction with, not instead of, the instructions contained in this installation
manual.
Date Installed:
Location of Fireplace:
Installer:
WARNING! Risk of Fire or Explosion! Failure to install fireplace acording to these instructions can lead to a fire or
explosion.
Verified that the chase is insulated and sealed. (Pg. 11)
Verified clearances to combustibles. (Pg. 10)
Fireplace is leveled and secured. (Pg. 12)
Hearth extension size/height decided. (Pg. 28)
Chimney configuration complies with diagrams.
Chimney installed, locked and secured in place with proper clearance.
Chimney air kit installed.
Firestops installed.
Protective hearth strips installed per manual requirements. (Pg.13)
Outside air kit installed. (Pg 14)
Chimney Section 4 & 5 (Pg. 15)
Attic insulation shield installed.
Shrouds Section 6 (Pg. 25)
Shroud is installed properly per instructions.
Comments communicated to party responsible
4017-261 • Rev A • 2-19-13
• Photographing the installation and copying this checklist for your file.
Combustible materials not installed in non-combustible areas.
All packaging and protective materials removed.
Optional doors properly installed.
Refractory installed correctly.
Grate is properly installed.
Firescreen installed properly.
(Builder/Gen. Contractor) (Installer) (Date)
Comments: Further description of the issues, who is responsible (Installer/Builder/Other Trades, etc.) and corrective action needed:
Manual bag and all of its contents are removed from the fireplace and given to the party
responsible for use and operation.
• That this checklist remain visible at all times on the fireplace until the installation is complete.
__________________________ by ______________________on _________
Hearth extension installed per manual requirements.
Verified all clearances meet installation manual requirements.
Mantels and wall projections comply with installation manual requirements.
Fireplace Setup Section 8 (Pg. 34)
Hearth & Home Technologies recommends the following:
Finishing Section 7 (Pg. 27)

Heatilator • A36/42R, A36/42RH • Installers Manual • 4017-259 • Rev I • 06/29/15
4
WARNING! Risk of Fire! Hearth & Home Technologies
disclaims any responsibility for, and the warranty and
agency listing will be voided by the following actions.
DO NOT:
• installoroperatedamagedreplace
• modifyreplace
• install other than as instructed by Hearth & Home
Technologies
• operate the fireplace without fully assembling all
components
• overre
• installunventedgaslogset
• installanycomponentnotapprovedbyHearth&Home
Technologies
• installpartsorcomponentsnotListedorapproved
Improper installation, adjustment, alteration, service or
maintenance can cause injury or property damage. For
assistance or additional information, consult a qualied
installer, service agency or your dealer.
B. Non-Combustible Materials
• Materials which will not ignite and burn, composed of
any combination of the following:
- Steel - Iron
- Brick - Tile
- Concrete - Slate
- Glass - Plasters
• Materials reported as passing ASTM E 136, Standard
Test Method for Behavior of Metals, in a Vertical Tube
Furnace at 750° C
C. Combustible Materials
• Materials made of or surfaced with any of the following
materials:
- Wood - Compressed paper
- Plant bers - Plastic
- Plywood/OSB - Sheet rock (drywall)
• Any material that can ignite and burn; ame proofed or
not, plastered or un-plastered
1 Product Specic & Important Safety Information
A. Fireplace Certication
This replace may be installed in sleeping rooms. This
is not approved for installation in manufactured homes.
If installed with a gas log set, provisions for the National
Fuel Gas Code must be met.
This replace has been tested and listed for use with
the optional components specied in this manual. These
optional components may be purchased separately and
installed at a later date. An outside air kit, gas insert, gas
log set or gas log-lighter should be installed at the time of
replace installation.
Heatilator is a registered trademark of Hearth & Home
Technologies.
This replace system has been tested and listed in accor-
dance with UL 127 and ULC-S610 standards by Under-
writers Laboratories Inc. for installation and operation in
the United States and Canada.

Heatilator • A36/42R, A36/42RH • Installers Manual • 4017-259 • Rev I • 06/29/15 5
2 Getting Started
A. Typical Fireplace System
Figure 2.1 Typical Fireplace System
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Non-combustible
roof flashing maintains
minimum clearance
around chimney
Additional lateral
support for chimney
above roof (or enclosed
in chase) if needed
Ceiling firestop
on floor of attic
Support straps
on rafter support
chimney (not shown)
Termination cap
Chimney penetrates roof
preferably without affecting
roof rafters
Offset & Return (with hanger straps)
Framing headed off
in ceiling joists
Enclosed space above
and around fireplace
Mantel and surround
Decorative facing
and trim
Hearth extension
Factory-built fireplace
Protective metal
hearth strip(s)
Outside
combustion air
Combustible framing/header
on top of V-shaped standoffs
Chimney system
Attic insulation shield must be used
here to keep insulation away from
chimney if attic is insulated
Storm Collar
Chimney Air Kit
Required in
Canada. Outlet
must be no
less than 4 ft.
(1.22 m) off
ground level.

Heatilator • A36/42R, A36/42RH • Installers Manual • 4017-259 • Rev I • 06/29/15
6
F
E
D
BC
Across a
corner
G
As a
room
divider
A
48 in.
(1219 mm)
minimum
B
Along a wall
B
A1/2 in. (13 mm) all
configurations
G
3/4 in. (19 mm) min. air
space from fireplace to
combustible materials. 1/2
in. (13 mm) allowed at
nailing flanges.
Note:
G
A*
In an exterior chase
or projecting into a
garage
B
Note: Measurements are FRAMING dimensions only and do
not include drywall either in the cavity or on the interior walls.
H
H
H
*8 in. (203 mm) extra space
included for outside air
connection. If outside air duct
has no bend, this dimension
may be reduced as long as
minimum clearances are met.
Model # A B C D E F G H
in. 51 43 74 7/8 35 3/4 15 3/4 53 23
mm 1295 1092 1902 908 400 1346 584
in. 57 49 77 1/2 38 7/8 18 54 7/8 23
mm 1448 1245 1969 987 457 1394 584
A36
A42
12 in. (305 mm)
Minimum from FP
opening to any
perpendicular wall.
Figure 2.2 Fireplace Locations
NOTICE:
• Illustrationsandphotosreecttypicalinstallationsand
are FORDESIGNPURPOSESONLY.
• Illustrations/diagramsarenotdrawntoscale.
• Actualinstallation/appearancemayvaryduetoindividual
design preference.
• Hearth&HomeTechnologiesreservestherighttoalter
its products.
NOTICE: In addition to these framing dimensions, also
reference the following section: Clearances (Section 3).
NOTICE:
Aminimum3/4in.(19mm)airclearanceatthe
backandsidesofthereplaceassemblymustbe
maintained.
Chimney sections at any level require a 2 in. mini-
mum air space clearance between the framing
and chimney sections.
B. Design and Installation Considerations
NOTICE: Check building codes prior to installation.
• Installation MUST comply with local, regional, state and
national codes and regulations.
• Consult insurance carrier, local building inspector, re
ofcials or authorities having jurisdiction over restrictions,
installation inspection and permits.
• Before installing, determine the following:
- Where the replace is to be installed.
- The vent system conguration to be used.
- Gas supply piping.
- Electrical wiring
- Framing and nishing details.
- Whether optional accessories - devices such as a
fan, wall switch or remote control - are desired.
1. Selecting Fireplace Locations
This replace may be used as a room divider, installed
along a wall, across a corner or used in an exterior chase.
See Figure 2.2.
Locating the replace in a basement should be avoided.
Locating near frequently opened doors, central heat
outlets or returns, or other locations of considerable air
movement can affect the performance.
Consideration should be given to these factors before
deciding on a location.

Heatilator • A36/42R, A36/42RH • Installers Manual • 4017-259 • Rev I • 06/29/15 7
2. Locating Fireplace & Chimney
Location of the replace and chimney will affect perfor-
mance.
• Install within the warm airspace enclosed by the building
envelope. This helps to produce more draft, especially
during lighting and die-down of the re.
• Installing the replace in a basement is not recommended.
• Penetrate the highest part of the roof. This minimizes
the effects of wind loading.
• Locate termination cap away from trees, adjacent
structures, uneven roof lines and other obstructions.
• Minimize the use of chimney offsets.
• Consider the replace location relative to oor and ceiling
and attic joists.
• Take into consideration the termination requirements in
Sections 4 and 5.
Marginal Location:
• Below peak
Location NOT recommended:
• Not the highest point of the roof
• Wind loading possible
Multi-level Roofs
Windward
Leeward
Recommended Location:
• Above peak
Recommended:
• Insulated exterior chase
in cooler climates
Recommended Location:
• Above peak
• Inside heated space
Location NOT recommended:
• Too close to tree
• Below adjacent structure
• Lower roof line
• Avoid outside wall
Marginal Location:
• Wind loading possible
Figure 2.3 Recommended Chimney Locations
• Install the outside air kit with the intake facing prevailing
winds during the heating season.
• Ensure adequate outdoor air for all combustion
appliances and exhaust equipment.
• Ensure furnace and air conditioning return vents are not
located in the immediate vicinity of the replace.
• Avoid installing the replace near doors, walkways or
small isolated spaces.
• Recessed lighting should be a “sealed can” design.
• Attic hatches weather stripped or sealed.
• Attic mounted duct work and air handler joints and seams
taped or sealed.

Heatilator • A36/42R, A36/42RH • Installers Manual • 4017-259 • Rev I • 06/29/15
8
C. Tools and Supplies Needed
Before beginning the installation be sure the following
tools and building supplies are available:
Reciprocating saw Framing material
Pliers Non-combustible sealant
Hammer Gloves
Phillips screwdriver Framing square
Flat blade screwdriver Electric drill and bits
Plumb line Safety glasses
Level Tape measure
1/2-3/4 in. length, #6 or #8 self-drilling screws
Misc. screws and nails
D. Inspect Fireplace and Components
WARNING! Risk of Fire and/or Explosion! Damaged
parts could impair safe operation. DO NOT install dam-
aged,incompleteorsubstitutecomponents.Keepre-
place dry.
• Remove replace and components from packaging and
inspect for damage.
• Vent system components and doors are shipped in
separate packages.
• Report to your dealer any parts damaged in shipment.
• Read all the instructions before starting the
installation. Follow these instructions carefully
during the installation to ensure maximum safety
and benet.
E. Fireplace System Requirements
The Heatilator replace system requirements consist of
the following:
• Fireplace
- Refractory (included with replace)
- Firescreen (included with replace)
- Grate (included with replace)
- Hearth Extension (required, sold separately)
• Outside Air System (optional)
- Air Inlet Hood
- Flex
• Chimney System
- Attic Insulation Shield (included with replace)
- Chimney air kit (required in Canada, sold separately)
- Chimney termination cap (required, sold separately)
• Non-combustible nish material

Heatilator • A36/42R, A36/42RH • Installers Manual • 4017-259 • Rev I • 06/29/15 9
3 Framing and Clearances
A. Fireplace Dimensions
Figure 3.1 Fireplace Dimensions
Model # A B C D
in. 36 42 28-1/4 14-1/8
mm 914 1067 718 359
in. 42 48 30-7/8 15-1/2
mm 1067 1219 784 394
A36
A42
4-1/4 in.
(108 mm)
9-5/8 in.
(244 mm)
8-5/8 in.
(219 mm)
13-1/2 in.
(343 mm)
Gas Knockout
Outside
Air
9-1/4 in.
(235 mm)
4-1/4 in.
(108 mm)
9-1/4 in.
(235 mm)
41-3/8 in.
(1051mm)
3-7/8 in.
(92 mm)
7-1/2 in.
(191 mm)
13-1/2 in.
(343 mm)
41-1/4 in.
(1048 mm)
(effective height)
Gas Knockout
Junction
Box
C
8-3/4 in.
(222 mm)
D
22-3/4 in.
(578 mm)
B
10-1/2 in.
(267 mm)
dia.
6-1/4 in.
(159 mm)
37-11/16 in.
(957 mm)
A
23-3/8 in.
(594 mm)
8-1/16 in.
(205 mm)

Heatilator • A36/42R, A36/42RH • Installers Manual • 4017-259 • Rev I • 06/29/15
10
B. Clearances
WARNING! Risk of Fire!
You must comply with all minimum air space clearances
tocombustiblesasspeciedinFigure3.2.DO NOT pack
required air spaces with insulation or other materials.
Framing or nishing material used on the front of, or in
frontof,thereplacecloserthantheminimumslistedmust
be constructed entirely of non-combustible materials (i.e.,
steel studs, concrete board, etc.). Failure to comply may
causere.
Figure 3.2 Clearances to Combustible Materials
Minimum Clearances to Combustibles
WITHIN ENCLOSURE AREA
Fireplace to backwall 3/4 in. (19 mm)
Fireplace to sidewall 3/4 in. (19 mm)
Top standoffs to header 0 in. (0 mm)
Door opening to sidewall 12 in. (305 mm)
MANTEL
Mantel minimum height 12 in. (305 mm)
above opening
Maximum mantel depth 12 in. (305 mm)
(insulation)
0 in. to level
of standoffs
Attic
Insulation
Shield
(ceiling)
(roof)
(attic)
(ceiling)
Ceiling Firestop
Offset/Return (secured
with hanger straps)
Storm Collar
Roof Flashing
3/4 in. (19 mm) to back &
sides of appliance
(except at nailing flanges
where it is 1/2 in. [13 mm])
Must have 2 in. (51 mm)
minimum clearance
to header
0 in.
to floor
2 in. (51 mm) min.
Shaded areas
represent
2 in. (51 mm) min.
air space clearance
required around pipe
Combustible Object
48 in.
1219 mm
Adapter attached here
(not shown)