Valor 1000KN User manual

©2020, Miles Industries Ltd.
WARNING:
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings
exactly could result in serious
injury, death, or property damage.
Do not store or use gasoline or other
flammable 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.
▪Leave the building immediately.
▪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.
Hot glass
will cause burns.
Do not touch glass
until cooled.
Never allow children
to touch glass.
A barrier designed to reduce
the risk of burns from the hot
viewing glass is provided with this
appliance and must be installed for
the protection of children and
other at-risk individuals.
DANGER
Installer: Leave this manual with the appliance.
Consumer: Retain this manual for future reference.
Direct Vent Zero Clearance
Gas Fireplace
natural gas 1000KN
propane gas 1000KP
Installation Manual
H3
4008413-03

Ce guide est disponible en français sur demande.
This appliance is a domestic room-
heating appliance. It must not be used
for any other purposes such as drying
clothes, etc.
This appliance is suitable for
installation in a bedroom or bed
sitting room.
This manual contains instructions to
install the ENGINE ONLY. A trim kit is
REQUIRED to complete the installation.
A barrier screen is provided with the
trim kit. Refer to the manual supplied
with the trim for installation.
2
The information contained in this manual is believed
to be correct at the time of printing. Miles Industries
Ltd. reserves the right to change or modify any
information or specifications without notice. Miles
Industries Ltd. grants no warranty, implied or stated,
for the installation or maintenance of your heater,
and assumes no responsibility for any consequential
damage(s).
© Copyright Miles Industries Ltd., 2020. All rights reserved.
Designed and manufactured for Miles Industries Ltd.
Valor Fireplaces
190–2255 Dollarton Highway
North Vancouver, BC, Canada V7H 3B1
T 604.984.3496 F 604.984.0246
valorfireplaces.com
This appliance may be installed in an
after-market permanently located,
manufactured (mobile) home where
not prohibited by local codes. This
appliance is only for use with the type
of gas indicated on the rating plate.
This appliance is not convertible for
use with other gases, unless a certified
kit is used.
INSTALLER: Leave this manual with the
appliance.
CONSUMER: Retain this manual for
future reference.
Massachusetts:
The piping and final gas connection must be
performed by a licensed plumber or gas fitter
in the State of Massachusetts. Also, see Carbon
Monoxide Detector requirements in the fireplace
installation manual.
WARNING
This product can expose you to chemicals
including Benzene, which is known to the State
of California to cause cancer and birth defects or
other reproductive harm. For more information
go to www.P65Warnings.ca.gov.
Note: Natural gas, in its original state, contains
Benzene.

Please read this manual BEFORE
installing and operating this
appliance.
3
This appliance has been professionally installed by:
Dealer Name: ________________________________
Phone:______________________________________
Welcome to Valor®
Fireplace Safety ................................................. 4
Specifications..................................................... 6
Kits & Accessories.............................................. 7
Dimensions & Location..................................... 8
Mantel Clearances............................................. 9
Installation Planning ........................................11
New Construction ................................................12
Overview ......................................................................12
Framing & Hearth .......................................................14
Wall Finish ....................................................................17
Retrofit Application .............................................19
Overview ......................................................................19
Venting .............................................................. 21
Overview ..................................................................... 21
Co-axial........................................................................ 22
Typical Co-axial Venting Components ....................22
Venting Chart ..............................................................23
Restrictors ...................................................................25
Horizontal Vent Termination Location....................26
Vertical Vent Termination .........................................27
Examples of Co-axial to Co-linear Adapters ..........31
Examples of Co-linear Terminal Configurations ...31
Alternate Co-linear to Co-axial Conversion at
Terminal..................................................................31
Co-axial to Flex Co-axial Adapter.............................31
Appliance Preparation .................................... 32
Convert Vent Outlet (if required).............................32
Install Stand-offs ........................................................33
Remove Convection Baffle ...................................... 34
Install HeatShift Take-Off Collars ........................... 34
Remove Window ........................................................35
Installation ....................................................... 36
Install Appliance for 1030 Clean Installation Kit
(new construction only) .......................................36
Install Appliance for 3 or 4-Sided Trims and Fronts
(new construction only) ...................................... 40
Install Electrical Wiring (if necessary) ....................41
Connect Gas Supply...................................................42
Install Liners............................................................... 44
Install Birch Log Kit 1000BLK....................................45
Install Driftwood Kit 1000DWK............................... 48
Install Traditional Log Kit 1000LSK ..........................51
Refit & Check Window .............................................. 54
Install Wall Switch Kit (required) ..............................55
Synchronize Remote Control....................................56
Check Operation ........................................................57
Adjust Aeration (if needed).......................................57
Install Remote Control Handset Wall Holder.........58
Install Trim and Barrier Screen ................................58
Wiring Diagram................................................ 59
Approved Venting Components.................... 60
Commonwealth of Massachusetts ............... 62
Appendix A - Lighting Instructions Plate...... 64
Appendix B - Remote Control Operation..... 65
Appendix C - Wall Switch Operation............. 69
Appendix D - HeatShift™ ................................ 70
Appendix E - Spare Parts ................................ 78

4
Fireplace Safety
This manual contains very important information about the safe installation and operation of the fireplace. Read and
understand all instructions carefully before installing and operating the fireplace. Failure to follow these instructions
may result in possible fire hazard and will void the warranty.
Replacement manuals are available by contacting the Valor Customer Service at 1-800-468-2567, or by visiting
valorfireplaces.com.
WARNING: Extremely Hot!
Heat and flammability
• Some parts of the fireplace are extremely hot, par-
ticularly the glass window. Use the barrier screen
provided with the trim or a gate to reduce the risk of
severe burns.
• The glass windows can exceed 500°F at full capacity.
• Always keep the appliance clear and free from com-
bustible materials, gasoline, and other flammable
vapors and liquids.
• Be aware of hot wall surfaces! The wall directly above
the fireplace can get very hot when the fireplace
heats. Although safe, it may reach temperatures in
excess of 200ºF depending on choice of trims or op-
tional accessories. Do not touch!
• Be aware of hot hearth/floor surfaces! The hearth or
floor directly in front of the fireplace can get very hot
when the fireplace heats. Although safe, they may
reach temperatures in excess of 200º F depending on
elevation of hearth. Do not step on it! Temperature
of hearth/floor surface will be reduced when barrier
screen is installed.
• Solid wood flooring in front of the fireplace (if al-
lowed) may shrink during the heating season
due to heat.
• Some materials or items, although safe, may discolor,
shrink, warp, crack, peel, and so on because of the
heat produced by the fireplace. Avoid placing candles,
paintings, photos and other combustible objects
sensitive to heat or furniture within 36 inches (0.9m)
around the fireplace.
• Due to its high temperature, the appliance should be
located out of traffic areas and away from furniture
and draperies.
• Any safety screen, guard, or barrier removed for ser-
vicing an appliance must be replaced prior to operat-
ing the appliance
• Children and adults should be alerted to the hazards
of high surface temperature and should stay away to
avoid burns or clothing ignition.
• Young children should be carefully supervised when
they are in the same room as the appliance. Toddlers,
young children, and others may be susceptible to
accidental contact burns. A physical barrier is recom-
mended if there are at-risk individuals in the house.
To restrict access to a fireplace or stove, install an
adjustable safety gate to keep toddlers, young chil-
dren, and other at-risk individuals out of the room
and away from hot surfaces.
• A barrier designed to reduce the risk of burns from
the hot viewing glass is provided with this appliance
and shall be installed for the protection of children
and other at-risk individuals.
• Clothing or flammable material should not be placed
on or near the appliance.
Do not put
furniture or other objects
in this space in front of
WKHȴUHSODFH
36” [0.9 m]
)LUHSODFH
Hearth

5
WARNING
Do not operate this appliance with the
glass front removed, cracked, or broken.
Replacement of the glass front should
be performed by a licensed or qualified
service person. Do not strike or slam the
glass front.
Glass window
• The glass front assembly must be in place and sealed
before the unit can be placed into safe operation.
• The glass front assembly must only be replaced as a
complete unit, as supplied by the fireplace manufac-
turer. No substitute material may be used.
• Do not use abrasive cleaners on the glass front as-
sembly. Do not attempt to clean the glass front when
it is hot.
Venting
• This unit must be used with a vent system as de-
scribed in this manual. No other vent system or com-
ponents may be used.
• Never obstruct the flow of combustion and ventila-
tion air. Keep the front of the appliance clear of all
obstacles and materials for servicing and proper
operation.
• This gas fireplace and vent assembly must be vented
directly to the outside and must never be attached to
a chimney serving a separate solid fuel burning ap-
pliance. Each gas appliance must use a separate vent
system. Common vent systems are prohibited.
Intended use
• This appliance is designed and approved as a supple-
mental heater and provides the potential for most
energy conservation when used while attended. The
use of an alternate primary heat source is advisable.
• This unit is not for use with solid fuel.
• Do not use this heater as a temporary source of heat
during construction.
Installation and Servicing
• Installation and repair should be done by a qualified
service person. The appliance should be inspected
before use and at least annually by a professional
service person. More frequent cleaning might be
required due to excessive lint from carpeting, bedding
material, et cetera. It is imperative that control com-
partments, burners, and circulating air passageways
of the appliance be kept clean.
Fireplace Safety
WARNING
Optional electrical accessories ARE NOT
ALLOWED when adapting appliance for
outdoor use.
Front outlet
WARNING
Optional
HeatShift
Duct Kit:
Do not cover
or place items
in front of outlet!

6
X
Specifications
Approval & Codes
This appliance is certified to ANSI Z21.88/CSA 2.33
American National Standard / CSA Standard for
Vented Gas Fireplace Heaters for use in Canada and
USA, and to CGA 2.17-91 High Altitude Standard in
Canada. This appliance is for direct vent installations.
This appliance complies with CSA P.4.1-15 Testing
method for measuring annual fireplace efficiencies.
The installation must conform to local codes or, in
the absence of local codes, with the National Fuel
Gas Code, ANSI Z223.1/NFPA 54 or the Natural Gas
and Propane Installation Code CAN/CGA-B149.1. Only
qualified licensed or trained personnel should install
this appliance.
This appliance must be electrically grounded in
accordance with local codes, or, in the absence of local
codes, with the National Electrical Code, ANSI/NFPA 70
or the Canadian Electrical Code, CSA C22.1.
Ratings
*High Altitude Installations
Input ratings are shown in BTU per hour and are
certified without deration for elevations up to 4,500
feet (1,370 m) above sea level.
For elevations above 4,500 feet (1,370 m) in USA,
installations must be in accordance with the current
ANSI Z223.1 and/or local codes having jurisdiction.
Heating value of gas in some areas is reduced to
compensate for elevation—consult your local gas
utility to confirm.
For installations at elevations above 4,500 feet
(1,370 m) in Canada, please consult provincial and/or
local authorities having jurisdiction.
Model 1000KN 1000KP
Gas Natural Propane
Altitude (Ft.)* 0-4,500 feet*
Input Maximum (Btu/h) 25,000 24,000
Input Minimum (Btu/h) 12,000 11,000
Manifold Pressure (in w.c.) 3.2” 9.5”
Minimum Supply Pressure (in w.c.) 5” 11”
Maximum Supply Pressure (in w.c.) 10” 14”
Main Burner Injector Marking 750 260
Pilot Injector Marking 51 30
Min. Rate By-Pass Screw 175 105
Supply Gas
Heater engines 1000KN is used with natural gas.
Heater engines 1000KP is used with propane gas.
The supply pressure must be between the limits
shown in the Ratings section.
The supply connection is 3/8”
NPT male and located on the
right hand side of the firebox.
A shut-offvalve (not supplied)
is required on the supply line to
isolate the unit during service.
See Connect Gas Supply section
for details.
Conversion Kits
The 1000K is supplied as natural gas or propane gas
and is field convertible between fuels. See instructions
packaged with the conversion kits for further
information.
Electrical
The 1000K is designed to run on battery power and
does not require an electrical power source to operate
as a heater. However, it requires electrical power
to operate optional 1095CFK Circulating Fan Kit or
GV60PAK Power Adapter.
HeatShift™System
The 1000K are designed to allow the installation of
the optional HeatShift System, a convection system
that redistributes the warm air flow away from the
fireplace opening to a more desirable location using
natural convection, without use of a fan.
The warm air flow may be relocated to a position
higher up the wall, or even to another room. The
result is much cooler wall temperatures above the
fireplace opening for locating televisions, artwork, etc.
Please note that the framing and mantel clearances
are affected by the installation of the HeatShift
System. Refer to “Appendix D—HeatShift™System™”
on page 70 for more information.
Outdoor Conversion Kit
The 1000K models are supplied standard for indoor
applications and may be adapted for installation
in specific “outdoor” applications protected from
weather as defined in the GV60CKO outdoor
conversion kit manual.

7
Required Kits Information accurate at the time of printing and subject to change without notice.
Fuel Beds (choose one)
1000DWK Driftwood Kit
1000BLK Birch Logs Kit
1000LSK Traditional Logs Kit
Ceramic Liners (choose one)
1010VRL Valor Red Brick Liners
1015LSL Ledgestone Liners
1025FBL Fluted Black Liners
1060PBL Black Liners
1065CBL Charcoal Brick Liners
1070RGL Reflective Glass Liners
1075HBL Herringbone Liners
Trims & Fronts—New Constructions Barrier Screen
1030CIK Clean Installation Kit 4007095AZ
1035BPB 3-Sided Backing Plate 4007128AZ
with 1045CFV Clearview Front Vintage Iron
1040BPB 4-Sided Backing Plate
4007347AZwith 1041FSV 4-Sided Surround Vintage Iron
with 1041FSCB 4-Sided Surround Champagne Brass
Trims & Fronts—Retrofit Installations Barrier Screen
1035BPB-RC 3-Sided Backing Plate, Black—Reduced Clearance
4007128AZ1036BPB-RC 3-Sided Backing Plate, Increased Height, Black—Reduced Clearance
with 1045CFV Clearview Front Vintage Iron
1040BPB-RC 4-Sided Backing Plate, Black—Reduced Clearance
4007347AZwith 1041FSV 4-Sided Surround Vintage Iron
with 1041FSCB 4-Sided Surround Champagne Brass
Information accurate at the time of printing and subject to change without notice.
Optional Accessories
Gas Conversion Kits
1000PGK Conversion to propane gas
1000NGK Conversion to natural gas
Other Accessories
GV60CKO Outdoor Fireplace Conversion Kit
1095CFK Circulating Fan Kit (requires GV60VM)
RBWSK Remote Battery & Wall Switch Kit
GV60PAK Power Kit
Hearth Gate Hearth gates such as Cardinal’s VersaGate are available at retail stores carrying safety products for children.
GV60WIFI WiFi connection module and cable (requires GV60VM)
GV60VM V-Module power supply (required for Circulating Fan Kit or WiFi Kit, not for use with outdoor installations)
Not required on fireplaces with 1095CFK Fan Kit with correct power components already installed.
HeatShift Accessories
LDK8 30” HeatShift plenum and (2) dual collar plates (4” diameter)
LDK10 30” finishing frame for LDK8
LDK11 (2) 10’ lengths of 4” liner
NOTE
RC Backing
Plates not
compatible
with
HeatShift
NOTE
RC Backing Plates not compatible with
HeatShift
Kits & Accessories

8
M
in. 40-1/2” [1029 mm] to to
p
o
f
cement board
39
”
[99
1 mm
]
23
-7/1
6
”
[
5
96
mm
]
3
1-1/
8
”
[
7
9
1 mm
]
Electrica
l
Inlet Poin
t
G
as Lin
e
Access Point
Z
ero Clearance
6WDQG2
΍
V
C
ente
r
Lin
e
4
x 6-5/8” dia
.
ventin
g
Heade
r
6
-5/8” dia
.
Ventin
g
ȴ
HOGFRQYHUWLEO
H
f
rom to
p
to rear
outle
t
C
enter o
f
ven
t
1
-1/
2”
[38
m
m
m]
3
-5/1
6”
[8
5 mm
]
9
-1/
2”
[2
4
2
mm
]
1
5
”
[38
1 mm
]
28
-7/1
6
”
[
7
22
mm
]
17-
3
/
8
”
[
441 mm
]
3
4-1/1
6
”
[86
5 mm
]
35-13/16”
[
9
0
9 mm
]
2
3-1/4”
[
59
0
mm
]
2
7-7/8”
[
7
0
9 mm
]
O
p
tional HeatShi
f
t
p
orts, 4 x 4”
Ø
=HUR&OHDUDQFHWR6WDQGR΍V
DW%DFNDQG6LGHV
53” [1346 mm]
37-1/2” [953 mm]
/2
”
12
”
[305 mm]
Face of
Framing
Top View
Note - 30” Plenum
(LDK8) will work with
this minimum corner
dimension.
Dimensions & Location
Dimensions
Location
Front ViewLeft Side View Right Side View
Corner Dimensions

9
Bottom of Unit
02”1” 4” 6” 8” 10” 12”
Do not put
furniture or objects
within 36” (914 mm)
of front of appliance
Approved
non-combustible
cement board
or equivalent
Mantel Projection
(from Face of Cement Board)
Mantel
Height
(from
Bottom
of Unit)
Ceiling
65” Min. to Ceiling
49”
42”
39”
35”
32”
26-5/8”
with HeatShift
ONLY
Note: Use of the optional
HeatShift System affects
mantel clearances as
shown below—see
“Appendix D - HeatShift™”
on page 70 in this
manual for installation
details.
Mantel Clearances
Combustible Mantel—Left Side View

10
34-1/16”
Fireplace Opening
Wall
Min. 5” to
wall
Face of
Finished
Wall
FIREPLACE
Note
Right Side Clearances are the same
Combustible Sidewall / Mantel Leg—Top View
Mantel Clearances

11
Caution
ONLY qualified licensed or trained personnel
should install this appliance
NEW CONSTRUCTION
1030CIK Clean Installation Kit YES Covers kit, butts to flange
Flush or max 1-1/2” above
bottom of appliance.
Note: Micore pad required if
hearth surface is above
appliance base.
1035BPB 3-Sided backing plate +
1045CFV Clearview Front YES Backing plate adjusts to allow for thickness
of non-combustible finish added over top of
cement board.
Max. thickness on top of cement board: 3/4”.
Flush to bottom of appliance
1040BPB 4-Sided backing plate +
1041FS 4-Sided Surrounds YES Min. 1/4” BELOW bottom of appliance
Backing plate trim
combination
1/2” cement
board required
above
appliance
Wall finish Hearth position (if any)
RETROFIT INSTALLATION—Reduced Clearance
1035BPB-RC 3-Sided backing plate +
1045CFV Clearview Front NO Existing wall finish.
Note: When top venting, max. existing wall
finish thickness, including header, is approx.
5”, maintaining 1” clearance to vent.
Flush to bottom of appliance
1036BPB-RC 3-Sided tall backing
plate + 1045CFV Clearview Front NO Flush to bottom of appliance
1040BPB-RC 4-Sided backing plate +
1041FS 4-Sided Surrounds NO Min. 7/8” BELOW bottom of appliance
Summary
Applications
There are two types of applications for the H3:
NEW CONSTRUCTION APPLICATION—
Pages 11–17
New construction applications where new framing
is being built and new wall finish applied. These
installations require the use of a non-combustible
cement board immediately above the fireplace and a
header of a minimum height of 39” from the base of the
H3 appliance.
RETROFIT APPLICATION with RC PLATES—
Pages 18–19
Retrofit applications where an existing fireplace is being
removed, and the existing wall finish and cavity remain.
These installations allow for a lower combustible header
height of 33”, and combustible wall finishes within 31” of
the base of the H3 appliance.
Installation Planning
NOTE
RC type Backing Plates are NOT compatible
to use with the HeatShift System.

12
New Construction
Mantel
1000K heater
Framing
1/2 inch thick non-combustible board or
equivalent – NOT supplied
Supplied with top outlet, field convertible
to rear outlet
Remote Handset Wall Holder
Wall Switch
Trim with Barrier Screen
(required)
Wall Finish
Note: Only non-combustible
finishes allowed over top of
cement board
Combustible Floor
allowed if flush with or below
base of appliance
Optional Hearth
Combustible material
allowed if flush with or below
base of appliance
Combustible Framing Allowed Beneath Fireplace.
Do not install appliance directly on carpet.
Note: This appliance may be installed in outdoor, weather protected
environments as defined in the GV60CKO Outdoor Conversion Kit
instruction manual.
Overview
WARNING
SAFETY WARNING! The H3 is a very effective radiant heater.
HOT WALL SURFACES! The wall directly above the fireplace is constructed of non-combustible
materials and, although safe, it may reach temperatures in excess of 200° F depending on
choice of trims. Do not touch. Finish the wall using materials suitable for these temperatures.
HEARTH/FLOOR SURFACES! The hearth/floor in front of the heater can get very hot. Locating
the unit raised above the hearth/floor and using the screen front will help reduce hearth
temperatures. Note that some materials, although safe can degrade due to heat—take this
into consideration when choosing materials.
Optional 4” Ø HeatShift
duct outlets (4). Refer to
Appendix D _ HeatShift

13
New Construction Overview
1035BPB 3-Sided Plate
29-9/16” [751 mm]
37-3/4” [959 mm]
1040BPB 4-Sided Plate
1/4” [7 mm]
Backing plate overhangs
bottom of appliance
3ODWHȵXVKZLWK
bottom of appliance
30-13/16” [783 mm]
from bottom of plate
40” [1016 mm]
1030CIK Clean Installation Kit
37-9/16” [954 mm]
34” [863 mm]
1-5/8”
[42 mm]
33-5/16” [846 mm]
25” [635 mm]
7ULPȵXVKZLWK
bottom of appliance
Backing Plates for new constructions

14
26-5/8” between underside
of non-combustible board
and base of heater.
1/2” thick non-combustible
board required above engine
(not supplied). See page
A hearth is not required. However, if installing
a hearth, consider the following:
VLGHGEDFNLQJSODWHVDUHȵXVKZLWKKHDUWK
4-sided backing plate position 1/4” below
bottom of appliance.
36”
15”
NOTE: This unit requires
a solid platform to support
it. Combustible framing
DOORZHGEHQHDWKȴUHSODFH
39”
Between underside of header and base of heater.
%DVHRIKHDWHUPXVWEHDWȴQLVKHGKHDUWKKHLJKW
However, please note that the 1040BPB 4-sided
backing plate extend 1/4” below the base of heater.
Increase cavity height accordingly.
16.
Framing & HearthNew Construction
Combustible hearth or flooring is
allowed if flush with or below the base
of the appliance.

15
39” [989 mm] to underside of combustible cavity
Min. 1” [25 mm]
clearance to
combustibles
around vertical
vent pipe
Approx. 5” [127 mm]
from back surface of
ZDOOȴQLVKWRIURQW
surface of appliance
FDVHZQRYHQWR΍VHW
9-1/2” [242 mm]
PARTIAL SHELF, top outlet
1/2ȋ>PP@WKLFN
non-combustible
board
Framing with Partial Shelf—
Top Outlet
New Construction Framing

16
*Approx. 49-7/8” [1267 mm] with 12” vent pipe
39” [991 mm] to underside of combustible cavity
12” pipe section
Approx. 39-3/8” [1000 mm]
6WDQGR΍
Fireplace -
Left Side View
39” [991 mm] to underside of combustible cavity
1” [25 mm]
VWDQGR΍
10-1/2”
[267 mm]
approx.
*Approx. 37-3/4” [959 mm]
*Approx. 29-3/4” [756 mm]
*Approx. 48-1/4” [1226 mm] with 12” vent pipe
Fireplace -
Left side view
12” pipe section
Vertical Takeoff
Horizontal Takeoff
*Notes—ALL venting considerations
• Dimensions of venting are based on us-
ing Dura-Vent elbows. Elbow curve radius
dimensions will vary when using other
brands. In general, other brands have
slightly bigger radius.
• 3 inches clearance to combustibles re-
quired above horizontal pipe. Slope hori-
zontal pipe upwards ¼ inch per foot. 1 inch
clearance required around sides and bot-
tom of horizontal pipe and around vertical
pipe.
• When calculating other effective pipe
lengths subtract approximately 1-1/2 inches
per pipe joint - for example, adding a
12-inch pipe section will add approximately
10-1/2 inches overall.
Venting ConsiderationsNew Construction

17
Min. 39” [991 mm]
Min. 12-1/2”
[318 mm]
Non-combustible
board required
thickness:
1/2 inch [13 mm]
Planning Wall Finish
Non-Combustible Materials Specifications
Non-combustible materials 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,
Standard Test Method for Behavior of Materials in a
Vertical Tube Furnace at 750 °C shall be considered
non-combustible materials.
Combustible Materials Specifications
Materials made of or surfaced with wood, compressed
paper, plant fibers, plastics, or other material that
can ignite and burn, whether flame proofed or not,
or plastered or unplastered shall be considered
combustible materials.
Non-combustible cement board
(not required with -RC backing plates)
The H3 fireplace, when installed in a new construction
application, requires a ½” [13mm] thick non-combus-
tible cement board or equivalent, to be used as a wall
surface immediately above the unit—see diagram for
minimum coverage.
Extending the cement board well beyond the mini-
mum shown will help avoid cracking due to differential
expansion of materials. Pre-drill cement board with
oversized holes and do not over-tighten screws to
avoid cracking due to
heat expansion.
Standard gypsum wall board may be used beyond
the perimeter of the cement board although it is
preferable not to change materials to help avoid
cracking.
Finishing around trims
Additional non-combustible material such as tile and
others may be applied over top of the wall surface or
you may choose to leave it finished clean with no tile.
The 1030 Clean Installation Kit installs at framing
stage and must be installed at the same time as the
appliance. Wall finishes cover kit’s panels and butt up
to its fireplace opening frame.
Minimum cement board dimensions
Wall FinishNew Construction

18
New construction (non -RC) 1035 and 1040 trims install
after wall finish is applied. The perimeter of trims
overlap wall finish; therefore thickness of any wall finish
materials must be taken into consideration. Trims have
enough adjustability to allow up to 3/4” thick non-
combustible material applied over top of 1/2” thick non-
combustible board.
Be aware that a trim is always required and that the
wall finish thickness must be taken into account for
all installations other than the Clean Installation Kit
1030CIK.
Trims and fronts 1035 and 1040 will accept wall finish
tucked under their edge up to approximately 1-1/4”
thick.
Avoiding Cracking Wall Finishes
We recommend installing the optional HeatShift
System to reduce the wall temperatures and minimize
the possibility of cracking wall finishes.
If a clean finish with no tile, etc. is desired, joints in the
non-combustible board and the transition to gypsum
board will require special attention if future cracking is
to be controlled.
Shrinkage and differential movement of the framing
and non-combustible wall board can transmit cracking
through to tiles, etc.
Be aware that temperatures on the non-combustible
wall surface above the appliance can exceed 200°F.
Below are some tips on how to best avoid any cracking:
• Allow materials to dry thoroughly before finishing the
wall. Cement board has the ability to absorb up to 30
percent of its weight in water and may shrink as much
as 1/8” over a 48” length when drying from a satu-
rated condition. Running the fireplace for an extended
period before final finishing will help drive out mois-
ture.
• Always pre-drill screw holes through cement board
and use screws with self-milling head.
• Always use mesh tape over joints.
• Always stagger joints in wall board.
• Behind joints, double up studs or use studs “on the
flat” to add extra support to the joint. Adhesive on
the backside of wall board behind any joints can help
control differential movement.
• Use multiple, thinner coats of joint compound and al-
low to dry thoroughly between coats.
• Ensure framing materials are dry.
• After finishing the wall, introduce heat gradually to
slowly dry any excess moisture rather than drying too
fast.
• Avoid notching cement board or tiles around corners
of window opening and instead provide a joint that
intersects the corner.
• Avoid using large, one-piece slab of material with a
cut-out in the middle as a surround for the fireplace.
Expansion above the opening will cause cracking at in-
side corners. Provide a joint that intersects the inside
corner to avoid cracking.
Wall FinishNew Construction
Cracks
Provide joints
either here or
here

19
Wall
switch
36”
Minimum between combustible
framing studs
15”
Minimum cavity
depth
Min 31”
To underside of existing
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Min 33”
To underside of existing
combustible header
Existing wall finish
(combustible or
non-combustible)
Existing combustible
framing
Existing combustible
header (max depth
5” total including wall
finish)
Note: Installers to verify
all clearances to existing
combustible materials are
adequate before installing this
appliance.
Note: Only Reduced Clearance
(RC) style backing plates (with
ventilation slot) can be used for
this application.
Note: RC Backing Plates are not
compatible with HeatShift.
The H3 appliance with 1035-RC or 1040-RC (Reduced Clearance) versions of the backing plates are specifically
designed for retrofit applications where an existing fireplace is being removed, and the existing wall finish and cavity
remain. These backing plates incorporate a ventilation slot that allows for a lower combustible header height of 33”,
and combustible wall finishes from 31” of the base of the H3 appliance. The outer dimensions of the RC backing plates
are larger, to cover a larger range of existing cavities.
Reduced Clearance backing plates DO NOT ADJUST for additional finishes applied later.
Note: Leave standoffs flat on
appliance for this application.
Retrofit Application Overview
Minimum cavity
height 39”
Backing plate
WARNING
SAFETY WARNING! The H3 is a very effective radiant heater.
HOT WALL SURFACES! The wall directly above the fireplace is constructed of combustible
materials and, although safe, it may reach hot temperatures depending on finish material.
HEARTH/FLOOR SURFACES! The hearth/floor in front of the heater can get very hot. Locating
the unit raised above the hearth/floor and using the screen front will help reduce hearth
temperatures. Note that some materials, although safe can degrade due to heat.
Ventilation slot
Required trim
Existing hearth or floor. May be
combustible material provided it
is no higher than the base of the
appliance.
NOTE: The bottom of 4-sided
backing plate 1040-RC extends
7/8” below bottom of appliance.

20
39-1/2” [1004 mm]
32-1/4” [819 mm]
1035BPB-RC 3-Sided Plate
40” [1016 mm]
33-1/4” [845 mm]
from bottom of plate
1040BPB-RC 4-Sided Plate
32-3/8” [822 mm]
from bottom of appliance
7/8” [22 mm]
Backing plate overhangs
bottom of appliance
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bottom of appliance
39-1/2” [1004 mm]
36” [914 mm]
1036BPB-RC 3-Sided Plate
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bottom of appliance
23-7/16” [596 mm]
31-1/8” [791 mm]
6-5/8” dia. venting
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Backing Plates and Fronts—Reduced Clearance
Retrofit Application Overview