1
Majestic • MARQ42STIN Installation Manual • 2272-980 Rev. L • 7/23
Installation Manual
Installation and Appliance Setup
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.
• 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 sup-
plier’s instructions.
- If you cannot reach your gas supplier, call
the re department.
• Installation and service must be performed
by a qualied installer, service agency, or the
gas supplier.
WARNING:
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly
could result in serious injury, death, or
property damage.
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 in the United States, or the
Standard for Installation in Mobile Homes,
CAN/CSA Z240 MH Series, in Canada.
This appliance is only for use with the type(s)
of gas indicated on the rating plate. This
appliance is not convertible for use with other
gases, unless a certied kit is used.
DANGER
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.
Models: MARQ42STIN
MARQUIS
SERIES
CAUTION! Risk of Fire! DO NOT store instruction manuals inside replace cavity.
High temperatures could cause a re.
INSTALLER: Leave this manual with the appliance, not inside the appliance.
CONSUMER: Retain this manual for future reference. Do not store inside the appliance.
Pour demander un exemplaire en français de ce manuel
d’installation, visitez www.majesticproducts.com.
2Majestic • MARQ42STIN Installation Manual • 2272-980 Rev. L • 7/23
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: Used to address practices not related to personal injury.
Table of Contents
Installation Standard Work Checklist ....................3
1 Product Specic and Important Safety Information
A. Appliance Certication ............................4
B. Glass Specications ..............................4
C. BTU Specications ...............................4
D. High Altitude Installations .......................... 4
E. Non-Combustible Materials Specication. . . . . . . . . . . . . . 4
F. Combustible Materials Specication .................4
G. Electrical Codes .................................4
H. California ......................................4
I. Requirements for the Commonwealth of Massachusetts . . 5
2 Getting Started
A. Design and Installation Considerations ...............6
B. Good Faith Wall Surface/TV Guidelines ..............6
C. Tools and Supplies Needed ........................6
D. Inspect Appliance and Components ..................7
3 Framing and Clearances
A. Appliance/Decorative Barrier Front Dimension Diagrams . 8
B. Clearances to Combustibles ......................10
C. Constructing the Appliance Chase .................. 11
D. Hearth Extension ...............................12
E. Elevated Hearth Systems .........................13
F. Floor Protection ................................13
4 Termination Location and Vent Information
A. Vent Termination Minimum Clearances ..............14
C. Vent Terminal Clearances ........................15
C. Approved Pipe .................................16
D. Use of Elbows .................................16
E. Measuring Standards ............................17
F. Vent Diagrams ................................. 18
5 Vent Clearances and Framing
A. Pipe Clearances to Combustibles ..................23
B. Wall Penetration Framing/Firestops .................23
C. Ceiling Firestop/Floor Penetration Framing ...........24
D. Install Attic Insulation Shield .......................24
6 Appliance Preparation
A. Vent Collar Preparation ..........................25
B. Securing and Leveling the Appliance ................26
7 Venting and Chimneys
A. Assemble Vent Sections (DVP Pipe Only) ........... 27
B. Assemble Slip Sections ..........................28
C. Secure the Vent Sections .........................29
D. Disassemble Vent Sections ....................... 29
E. Vertical Termination Requirements ..................30
F. Horizontal Termination Requirements ...............31
8 Electrical Information
A. General Information .............................33
B. Wiring Requirements ............................34
9 Gas Information
A. Fuel Conversion ................................35
B. Gas Pressure .................................. 35
C. Gas Connection ................................35
D. High Altitude Installations ......................... 35
E. Air Shutter Setting ..............................36
F. Service/Replace Appliance Gas Valve ...............36
10 Finishing
A. Facing Material .................................37
B. Mantel and Wall Projections .......................38
C. Decorative Fronts ...............................39
11 Appliance Setup
A. Fixed Glass Assembly ...........................40
B. Remove the Shipping Materials .................... 41
C. Clean the Appliance .............................41
D. Accessories ...................................42
E. Installing the Optional Heat-Zone® Gas Kit .............42
F. Install Light Bulbs ..............................42
G. Install Teco-Sil (Glass Ember Rock) .................43
H. Mystic Ember Placement .........................44
I. Ember/Mineral Wool Placement ....................44
J. Log Set Assembly ..............................45
K. IntelliFire Touch Control System Setup ..............50
12 Reference Materials
A. Vent Components Diagrams ......................51
B. Accessories ...................................57
= Contains updated information.
Note: The term “recommend” or “recommended” does not indicate a requirement. It is a best practice suggested by
Hearth & Home Technologies®.
3
Majestic • MARQ42STIN Installation Manual • 2272-980 Rev. L • 7/23
Installation Standard Work Checklist
Customer:
Lot/Address:
Model (circle one): MARQ42STIN
Date Installed:
Location of Fireplace:
Installer:
Dealer/Distributor Phone #
Serial #:
Comments Communicated to party responsible ____________________ by ______________________on ___________
(Builder / Gen. Contractor/) (Installer) (Date)
= Contains updated information.
Hearth & Home Technologies recommends the following:
• Photographing the installation and copying this checklist for your le.
• That this checklist remain visible at all times on the appliance until the installation is complete.
This standard work checklist is to be used by the installer in conjunction with, not instead of, the instructions contained in
this installation manual.
WARNING! Risk of Fire or Explosion! Failure to install appliance according to these instructions can lead to a
re or explosion.
ATTENTION INSTALLER:
Follow this Standard Work Checklist
Appliance Install Information YES IF NO, WHY?
Veried clearances to combustibles requirements are maintained. (Pg. 10-11) ___________________
Veried that the chase is insulated and sealed. (Pg. 11) ___________________
Veried mantel and wall clearance requirements are maintained. (Section 10) ___________________
Veried hearth extension requirements are maintained. (Pg. 12) __________________
Veried appliance is leveled and secured. (Pg. 26) ___________________
Veried required factory-supplied non-combustible board installed. (Pg. 26) ___________________
Venting/Chimney Section 7 (Pg. 27-32)
Veried venting conguration complies to vent diagrams. ___________________
Veried venting installed, locked and sealed/secured in place. ___________________
Veried venting meets clearance to combustible requirements. ___________________
Veried wall/ceiling restops are installed (if applicable). ___________________
Veried attic insulation shield is installed (if applicable). ___________________
Veried Exterior wall/Roof ashing is installed and sealed. ___________________
Veried termination cap is installed and sealed. ___________________
Electrical Section 8 (Pg. 33-34)
Veried unswitched power (110-120 VAC) provided to the appliance. ___________________
Veried wall switch wires are properly installed (if applicable). ___________________
Gas Section 9 (Pg. 35-36)
Veried appliance is using proper fuel type. ___________________
If converted, veried proper fuel conversion kit was used. ___________________
Veried that gas components (ttings, pressure taps, etc) are leak free and replace is
operating under correct pressures. ___________________
Finishing Section 10 (Pg. 37-39)
Veried that nish material does not interfere with install/operation of decorative front. ___________________
Veried combustible materials are not installed in non-combustible areas. ___________________
Veried all clearances meet installation manual requirements. ___________________
Veried mantels/wall projections comply with installation manual requirements. ___________________
Appliance Setup Section 11 (Pg. 40-50)
Veried all packaging and protective materials are removed (inside & outside of appliance). ___________________
Veried Teco-Sil installed and properly fogged with black high temperature paint. ___________________
Veried Lava Rock, Mystic Embers, Glowing Embers, and logs installed correctly. ___________________
Veried xed glass assembly installed and secured. ___________________
Veried that a required decorative door option is installed properly. ___________________
Veried remote control has been programmed and is fully functional. ___________________
Veried proper air shutter setting for installation type and vent conguration. ___________________
Manual bag and all of its contents are removed from inside/under
the appliance and given to party responsible for use and operation. ___________________
2272-982B 7/23
Comments: Further description of the issues, who is responsible (Installer/ Builder/ Other Trades, etc) and corrective
action needed ____________________________________________________________________________________
4Majestic • MARQ42STIN Installation Manual • 2272-980 Rev. L • 7/23
B. Glass Specications
This appliance is equipped with 5 mm ceramic glass with
an anti-reective coating. Replace glass only with glass
with identical specications. Please contact your dealer
for replacement glass.
This product is listed to ANSI standards for “Vented Gas
Fireplace Heaters” and applicable sections of “Gas Burn-
ing Heating Appliances for Manufactured Homes and
Recreational Vehicles”, and “Gas Fired Appliances for
Use at High Altitudes”.
A. Appliance Certication D. High Altitude Installations
NOTICE: If the heating value of the gas has been reduced,
these rules do not apply. Check with your local gas utility
or authorities having jurisdiction.
When installing above 2000 feet elevation:
• In the USA: Reduce input rate 4% for each 1000 feet
above 2000 feet.
• In CANADA: Input ratings are certied without a
reduction of input rate for elevations up to 4500 feet
(1370 m) above sea level. Please consult provincial
and/or local authorities having jurisdiction for installa-
tions at elevations above 4500 feet (1370 m).
Check with your local gas utility to determine proper
orice size.
E. Non-Combustible Materials Specication
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,
Standard Test Method for Behavior of Materials in
a Vertical Tube Furnace at 750 ºC shall be considered
non-combustible materials.
F. Combustible Materials Specication
Materials made of or surfaced with wood, compressed pa-
per, plant bers, plastics, or other material that can ignite
and burn, whether ame proofed or not, or plastered or
unplastered shall be considered combustible materials.
G. Electrical Codes
NOTICE: This appliance must be electrically wired
and grounded in accordance with local codes or, in the
absence of local codes, with National Electric Code
ANSI/NFPA 70-latest edition or the Canadian Electric
Code CSA C22.1.
• A 110-120 VAC circuit for this product must be pro-
tected with ground-fault circuit-interrupter protection,
in compliance with the applicable electrical codes,
when it is installed in locations such as in bathrooms
or near sinks.
NOT INTENDED FOR USE AS A PRIMARY HEAT SOURCE.
This appliance is tested and approved as either supplemen-
tal room heat or as a decorative appliance. It should not be
factored as primary heat in residential heating calculations.
NOTICE: 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.
1 1 Product Specic and Important Safety Information
MODELS: MARQ42STIN
LABORATORY: Underwriters Laboratories, Inc. (UL)
TYPE: Direct Vent Heater
STANDARD: ANSI-Z21.88-2019 • CSA 2.33-2019
C. BTU Specications
Models
(U.S. or Canada)
Maximum
Input
BTU/h
Minimum
Input
BTU/h
Orice
Size
(DMS)
MARQ42STIN (NG) US
(0-2000 FT) 57,500 43,000 #24
MARQ42STIN
(Propane)
US
(0-2000 FT) 52,000 39,000 #44
H. California
WARNING: This product and the fuels used to
operate this product (liquid propane or natural
gas), and the products of combustion of such fuels, can
expose you to chemicals including benzene, which is
known to the State of California to cause cancer and
reproductive harm. For more information go to: www.
P65Warnings.ca.gov.
5
Majestic • MARQ42STIN Installation Manual • 2272-980 Rev. L • 7/23
I. 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 nished grade in the area of the venting, in-
cluding but not limited to decks and porches, the following
requirements shall be satised:
Installation of Carbon Monoxide Detectors
At the time of installation of the side wall horizontal vented
gas fueled equipment, the installing plumber or gas tter
shall observe that a hard wired carbon monoxide detector
with an alarm and battery back-up is installed on the oor
level where the gas equipment is to be installed. In addi-
tion, the installing plumber or gas tter shall observe that
a battery operated or hard wired carbon monoxide detec-
tor 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 qualied licensed professionals for the installation of
hard wired carbon monoxide detectors.
In the event that the side wall horizontally vented gas fu-
eled 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
oor 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 dur-
ing said thirty (30) day period, a battery operated carbon
monoxide detector with an alarm shall be installed.
Approved Carbon Monoxide Detectors
Each carbon monoxide detector as required in accor-
dance with the above provisions shall comply with NFPA
720 and be ANSI/UL 2034 listed and IAS certied.
Signage
A metal or plastic identication plate shall be permanent-
ly 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 fu-
eled heating appliance or equipment. The sign shall read,
in print size no less than one-half (1/2) in. in size, “GAS
VENT DIRECTLY BELOW. KEEP CLEAR OF ALL OB-
STRUCTIONS”.
Inspection
The state or local gas inspector of the side wall horizon-
tally vented gas fueled equipment shall not approve the
installation unless, upon inspection, the inspector ob-
serves 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:
• 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 fu-
eled equipment installed in a room or structure separate
from the dwelling, building or structure used in whole or
in part for residential purposes.
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:
• 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.
Gas Equipment Venting System NOT Provided
When the manufacturer of a Product Approved side wall
horizontally vented gas fueled equipment does not pro-
vide the parts for venting the ue gases, but identies
“special venting systems”, the following requirements
shall be satised by the manufacturer:
• The referenced “special venting system” instructions
shall be included with the appliance or equipment in-
stallation instructions; and
• The “special venting systems” shall be Product Ap-
proved by the Board, and the instructions for that sys-
tem shall include a parts list and detailed installation
instructions.
A copy of all installation instructions for all Product Ap-
proved 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.
Note: The following requirements reference various
Massachusetts and national codes not contained in this
document.
6Majestic • MARQ42STIN Installation Manual • 2272-980 Rev. L • 7/23
2 2 Getting Started
A. Design and Installation Considerations
WARNING! Risk of Fire or Explosion! Read all instruc-
tions before starting the installation.
Direct vent gas appliances are designed to operate with
all combustion air siphoned from outside of the building
and all exhaust gases expelled to the outside. No addi-
tional outside air source is required.
Installation MUST comply with local, regional, state and
national codes and regulations. Consult insurance carrier,
local building inspector, re ofcials or authorities having
jurisdiction over restrictions, installation inspection and
permits.
Before installing, determine the following:
• Where the appliance is to be installed.
• The vent system conguration to be used.
• Gas supply piping requirements.
• Provisions for optional heat management system.
• Electrical wiring requirements.
• Framing and nishing details.
• Whether optional accessories—devices such as a fan,
wall switch, or remote control—are desired.
C. Tools and Supplies Needed
Before beginning the installation be sure that the following
tools and building supplies are available.
Tape measure Framing material
Pliers Hammer
Phillips screwdriver Manometer
Gloves Framing square
Voltmeter Electric drill and bits (1/4 in.)
Plumb line Safety glasses
Level Reciprocating saw
Flat blade screwdriver
Non-corrosive leak check solution
1/2 - 3/4 in. length, #6 or #8 Self-drilling screws
Caulking material (300 ºF minimum continuous exposure
rating)
One 1/4 in. female connection (for optional fan).
Improper installation, adjustment, alteration, service or
maintenance can cause injury or property damage. For
assistance or additional information, consult a qualied
service technician, service agency or your dealer.
Figure 2.1 Good Faith Wall Surface Temperatures Above Appliance
B. Good Faith Wall Surface/TV Guidelines
NOTICE: Temperatures listed above are taken with a
temperature measuring probe as prescribed by the test
standard used for appliance certication. Temperatures
on walls or mantels taken with an infrared thermometer
may yield increased temperatures of up to 30 degrees or
more depending on the thermometer settings and material
characteristics being measured.
MEASUREMENTS FROM
TOP EDGE OF THE OPENING
6 in.
18 in.
24 in.
30 in.
36 in.
TO CEILING
12 in.
APPLIANCE FRONT
FIREPLACE
OPENING
157 °F
129 °F
124 °F
123 °F
116 °F
105 °F
Installation and service of this appliance should be performed by
qualied personnel. Hearth & Home Technologies recommends
HHT Factory Trained or NFI certied professionals.
7
Majestic • MARQ42STIN Installation Manual • 2272-980 Rev. L • 7/23
D. Inspect Appliance and Components
• Carefully remove the appliance and components from
the packaging.
• The vent system components and decorative doors and
fronts may be shipped in separate packages.
• If packaged separately, the log set and appliance grate
must be installed.
• Report to your dealer any parts damaged in shipment,
particularly the condition of the glass.
• This product is factory-equipped with an IntelliFire Touch
remote control, which was paired to the appliance at the
factory. This specic remote control needs to remain with
the contents of the manual bag. Do not install batteries
in the remote control until performing the nal appliance
setup and checklist.
• Read all of the instructions before starting the instal-
lation. Follow these instructions carefully during the
installation to ensure maximum safety and benet.
WARNING! Risk of Fire or Explosion! Damaged parts
could impair safe operation. DO NOT install damaged, in-
complete or substitute components. Keep appliance dry.
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.
• Modication of the appliance or vent system.
• Installation other than as instructed by Hearth & Home
Technologies.
• Improper positioning of the gas logs or the glass door.
• Installation and/or use of any component part not approved
by Hearth & Home Technologies.
Any such action may cause a re hazard.
WARNING! Risk of Fire, Explosion or Electric Shock!
DO NOT use this appliance if any part has been under
water. Call a qualied service technician to inspect the
appliance and to replace any part of the control system
and/or gas control which has been under water.
8Majestic • MARQ42STIN Installation Manual • 2272-980 Rev. L • 7/23
3 3 Framing and Clearances
A. Appliance/Decorative Barrier Front Dimension Diagrams
Dimensions are actual appliance dimensions. Use for reference only. For framing dimensions and clearances refer to Section 5.
Figure 3.1 Appliance Dimensions
Location Inches Millimeters
K15 381
L12-3/4 324
M8 dia. 203
N30 762
O30-3/8 772
P14 356
Q6 dia 152
R22-7/8 875
S8203
Location Inches Millimeters
A58-1/8 1476
B42 1067
C39-7/16 1002
D35-1/8 892
E45-3/8 1153
F60 1524
G 1 25
H46-3/8 1178
I9-1/8 232
J12 305
G
E
P
C
I
J
F
FRONT VIEW
LEFT VIEW
RIGHT VIEW
GAS LINE AND
ELECTRICAL
ACCESS
TOP VIEW
B
A
D
H
L
K
O
M
N
ELECTRICAL
ACCESS
Q
S
R
GAS LINE
ACCESS
Appliance Dimensions Table
9
Majestic • MARQ42STIN Installation Manual • 2272-980 Rev. L • 7/23
Figure 3.2 Decorative Barrier Front Dimensions - FSMQ42ST
DECORATIVE BARRIER FRONT DIMENSION DIAGRAM - FSMQ42ST
35-11/16 IN
(907 mm)
37-1/2 IN
(953 mm)
31-1/4 IN
(794 mm)
41-15/16 IN
(1065 mm)
37 IN
(940 mm)
31-1/4 IN
(794 mm)
1-1/8 IN
(29 mm)
Note: See Section 10 for hearth, mantel and nishing detail.
IMPORTANT! This replace requires an installed decorative barrier front to prevent direct contact with the hot
viewing glass. DO NOT operate the replace with the barrier removed.
Decorative barrier front must be ordered at time of replace purchase. If decorative barrier front is not present,
contact dealer.
10 Majestic • MARQ42STIN Installation Manual • 2272-980 Rev. L • 7/23
B. Clearances to Combustibles
When selecting a location for the appliance it is important
to consider the required clearances to walls (see Figure
3.3).
WARNING! Risk of Fire or Burns! Provide adequate
clearance around air openings and for service access.
Due to high temperatures, the appliance should be lo-
cated out of trafc and away from furniture and draperies.
NOTICE: Illustrations reect typical installations and are
FOR DESIGN PURPOSES ONLY. Illustrations/diagrams
are not drawn to scale. Actual installation may vary due to
individual design preference.
Figure 3.3 Appliance Locations
NOTICE: This See-Through appliance is NOT designed
or approved for an indoor/outdoor application.
36 IN.
36 IN.
13 IN. TO
FIREPLACE
OPENING
13 IN.
NOTE: 1/2 IN. THICK FACTORY-
SUPPLIED NON-COMBUSTIBLE
BOARD NOT SHOWN ATTACHED TO
APPLIANCE.
11
Majestic • MARQ42STIN Installation Manual • 2272-980 Rev. L • 7/23
C. Constructing the Appliance Chase
A chase is a vertical box-like structure built to enclose the
gas appliance and/or its vent system. In cooler climates
the vent should be enclosed inside the chase.
NOTICE: Treatment of ceiling restops and wall shield
restops and construction of the chase may vary with the
type of building. These instructions are not substitutes
for the requirements of local building codes. Therefore,
you MUST check local building codes to determine the
requirements to these steps.
NOTICE: When installing a sprinkler head in a replace
chase, it is recommended to use a sprinkler head with a
sprinkler activation temperature classied as Extra High.
Keep sprinkler head away from vent and chimney.
Chases should be constructed in the manner of all out-
side walls of the home to prevent cold air drafting prob-
lems. The chase should not break the outside building
envelope in any manner.
Walls, ceiling, base plate and cantilever oor of the chase
should be insulated. Vapor and air inltration barriers
should be installed in the chase as per regional codes for
the rest of the home. Additionally, in regions where cold
air inltration may be an issue, the inside surfaces may be
NOTICE: Install appliance on hard metal or wood surfaces
extending full width and depth. DO NOT install directly
on carpeting, vinyl, tile or any combustible material other
than wood.
WARNING! Risk of Fire! Maintain specied air space
clearances to appliance and vent pipe:
• Insulation and other materials must be secured to prevent
accidental contact.
• The chase must be properly blocked to prevent blown
insulation or other combustibles from entering and
making contact with replace or chimney.
• Failure to maintain airspace may cause overheating and
a re.
sheetrocked and taped (or an equivalent method may be
used) to achieve maximum air tightness.
To further prevent drafts, the wall shield and ceiling re-
stops should be caulked with caulk with a minimum of
300 ºF continuous exposure rating to seal gaps. Gas
line holes and other openings should be caulked with
caulk with a minimum of 300 ºF continuous exposure rating
or stuffed with unfaced insulation. If the appliance is being
installed on a cement surface, a layer of plywood may be
placed underneath to prevent conducting cold up into the
room.
Figure 3.4 Clearances to Combustibles
C
B
D
A
F
E=33 IN.
G
H
I
E=43 IN.
MINIMUM FRAMING DIMENSIONS*
A B** C* D E F** G** H I
Rough
Opening
(Vent Pipe)
Rough
Opening
(Height)
Rough
Opening
(Depth)
Rough
Opening
(Width)
Clearance
to ceiling
from opening
Clearance
to ceiling
from top of
appliance
Combustible
Floor
Combustible
Flooring
Sides of
Appliance
Front of
Appliance
Inches 10 46-1/2 30 60-1/4 43 33 0 See Note Below 1 36
Millime-
ters 254 1181 762 1530 1092 838 0 See Note Below 25 914
* Adjust framing dimensions for interior sheathing (such as sheetrock)
** Fireplace may need to be elevated from the oor affecting framing height B, depending on hearth construction. See Section 3.D
for hearth and combustible oor requirements. For installations with vinyl ooring, special clearance requirements apply.
See Section 3.F.
12 Majestic • MARQ42STIN Installation Manual • 2272-980 Rev. L • 7/23
D. Hearth Extension
WARNING! Risk of Fire! Hearth extension required to
protect combustible oors in front of appliance.
WARNING! Risk of Fire! DO NOT block ventilation
slots. A minimum 1/4 in. space between the bottom of
hearth refractory and top of eld installed hearth exten-
sion (marble, tile, granite, etc) is required across full width
of replace.
If the appliance is to be placed directly on the oor, the
non-combustible hearth material will be limited to 3/4 in.
thick, including the oor adhesive. If the hearth mate-
rial will exceed 3/4 in. thick, the appliance will need to
be shimmed from the oor appropriately to maintain 1/4
in. minimum space between the oor hearth and hearth
refractory.
The base of the replace may sit on a combustible sur-
face. The area in front of the replace must be protected
by a noncombustible hearth extension, unless the re-
place is raised a minimum of three inches above the com-
bustible oor or hearth. See Figures 3.5, 3.6 and 3.8.
Figure 3.7 Non-Combustible Zone
Figure 3.8 Non-Combustible Hearth Extension Minimum
Dimensions (Fireplace Positioned on Combustible
Surface)
A B
in. 60-1/4 12
mm 1530 305
Figure 3.5 Fireplace Positioned on Combustible Surface
WOOD OR OTHER
COMBUSTIBLE
FLOOR OR PLATFORM
3-3/4 IN.
COMBUSTIBLE MATERIAL
1 IN. MAX THICKNESS
ALLOWED UNDER
FIREPLACE
BOTTOM OF FIREPLACE
3 IN.
MIN.
MINIMUM
1/4 INCH SPACE
REQUIRED
Figure 3.6 Fireplace Raised A Minimum of 3 Inches Above
Combustible Surface
3-1/2 IN.
NO COMBUSTIBLES
IN THIS AREA 1/2 IN. BUILDING MATERIAL
(MAY BE COMBUSTIBLE)
COMBUSTIBLE
FRAMING
4 IN.
FACTORY-SUP-
PLIED 1/2 IN.
NON-COMBUSTI-
BLE BOARD
39 IN.
23 IN.
A
B
WOOD OR OTHER
COMBUSTIBLE FLOOR
OR PLATFORM
MARBLE, GRANITE, TILE OR
OTHER NON-COMBUSTIBLE
HEARTH EXTENSION
3/4 IN. MAX
12 IN.
HEARTH
REFRACTORY
BOTTOM OF
FIREPLACE
NON-COMBUSTIBLE
MATERIAL ON SIDES
(PROFILE VIEW)
MINIMUM
1/4 INCH SPACE
REQUIRED
13
Majestic • MARQ42STIN Installation Manual • 2272-980 Rev. L • 7/23
E. Elevated Hearth Systems
Use the table below to identify the hearth system that will be used. The table will also help identify effects on the various
dimensions. Some hearth systems will elevate the appliance off the oor at a given dimension. The dimension noted in the
table below, in the Elevated Appliance Dimension Column, will also have to be added to the following: Extension Wall Hole
referenced in Figure 5.2 (Exterior Wall Hole) and Rough Opening Height (header height) referenced in Figure 3.4. Note:
Finished oor thickness should also be considered when determining installation dimensions.
MODEL DESCRIPTION PART # ELEVATED APPLIANCE DIMENSION
See Note 1
MARQ42STIN
Avalon Cast Mantel AFANTC5244 1/2 in.
Biltmore Cast Mantel AFBETC5244 1/2 in.
Hearst Cast Mantel AFHTTC5244 1/2 in.
Note 1. Add dimensions to Exterior Wall Hole (Figure 5.2) and Rough Opening Height (Figure 3.4).
The above listed Hearth and Home Technologies manufactured hearth systems have been tested and certied for use
with the MARQ42STIN replace. The dimensions of these Hearth and Home Technologies manufactured hearth systems
may differ slightly from the mantel specications listed in Section 10.B. The above listed Hearth and Home Technologies
manufactured hearth systems are not required to meet the mantel specications listed in Section 10.B.
12 IN. MIN.
APPLIANCE WIDTH MIN.
12 IN. MIN.
VINYL
Figure 3.9 Vinyl Flooring Recommendations
Vinyl Flooring
Vinyl ooring is sensitive to heat. To avoid damage to
the vinyl ooring, a 12 inch minimum x 12 inch minimum
hearth is recommended when using vinyl ooring up
to the wall. See Figure 3.9. If no hearth is used, it is
recommended to provide a minimum of 36 inches of
clearance in front of the appliance to the vinyl ooring OR
the bottom of the appliance should be raised a minimum
of 24 inches off of the oor to allow the vinyl ooring to be
installed up to the wall.
F. Floor Protection
Hearth and Home Technologies does not recommend
adhesive based vinyl ooring products due to thermal
expansion during operation. Floating style ooring can be
used, but will reach temperatures up to 110 °F (based on
ambient temperature of 70 °F). Consult the manufacturer’s
ooring specications to ensure compatibility.
NOTICE: Clearances that do not meet the minimum
guidelines could result in damage or buckling to the vinyl
ooring and is done at the installer’s risk.
14 Majestic • MARQ42STIN Installation Manual • 2272-980 Rev. L • 7/23
A. Vent Termination Minimum Clearances
Roof Pitch H (Min.) Ft.
Flat to 6/12...........................................................1.0*
Over 6/12 to 7/12 .................................................1.25*
Over 7/12 to 8/12 .................................................1.5*
Over 8/12 to 9/12 .................................................2.0*
Over 9/12 to 10/12 ...............................................2.5*
Over 10/12 to 11/12 .............................................3.25
Over 11/12 to 12/12 .............................................4.0
Over 12/12 to 14/12 .............................................5.0
Over 14/12 to 16/12 .............................................6.0
Over 16/12 to 18/12 .............................................7.0
Over 18/12 to 20/12 .............................................7.5
Over 20/12 to 21/12 .............................................8.0
Figure 4.1 Minimum Height From Roof to Lowest Discharge
Opening
HORIZONTAL
OVERHANG
VERTICAL
WALL
GAS DIRECT VENT
TERMINATION CAP
12
X
ROOF PITCH
IS X/ 12
LOWEST
DISCHARGE
OPENING
2 FT.
MIN.
20 INCHES MIN.
H (MIN.) - MINIMUM HEIGHT FROM ROOF
TO LOWEST DISCHARGE OPENING
4 4 Termination Location and Vent Information
Fire Risk.
Maintain vent clearance to combustibles as
specied.
• DO NOT pack air space with insulation or other
materials.
Failure to keep insulation or other materials away
from vent pipe could cause overheating and re.
WARNING
Figure 4.2 Staggered Termination Caps
Wood or Fuel Oil
Termination Cap
B
*Gas
Termination
Cap
A
*
If two gas terminations are present, they may be level (B = 0 inches)
provided A is a minimum of 6 inches.
A B
6 in. (minimum) up to 20 in.
152 mm/508 mm
18 in. minimum
457 mm
20 in. and over 0 in. minimum
* H minimum may vary depending on regional snowfall.
Refer to local codes.
15
Majestic • MARQ42STIN Installation Manual • 2272-980 Rev. L • 7/23
C
JB
D
B
F
B
A
E
V
V
V
V
V
V
M
H or i
V
G
X
VH
A
VV
H
Figure 4.3 Minimum Clearances for Termination
X= AIR SUPPLY INLET
V= VENT TERMINAL
= AREA WHERE TERMINAL IS NOT PERMITTED
Electrical
Service
V
K
V K
V
L
C
V
C. Vent Terminal Clearances
U.S.A. CANADA
A Clearance above grade,veranda, porch, deck, balcony or roof. 12 in. (305 mm) 12 in. (305 mm)
B Clearance to window or door that may be opened, or to permanently closed window 12 in. (305 mm) 112 in. (305 mm)
C
Clearance below unventilated soft 18 in. (457 mm) 18 in. (457 mm)
Clearance below ventilated soft 18 in. (457 mm) 18 in. (457 mm)
Clearance below any vinyl softs and electrical service 42 in. (1067 mm) 42 in. (1067 mm)
D Clearance to outside corner 6 in. (152 mm) 6 in. (152 mm)
E Clearance to inside corner 6 in. (152 mm) 6 in. (152 mm)
F Clearance to each side of center line extended above gas meter/regulator assembly
Clearance in accor-
dance with local instal-
lation codes and the
requirements of the gas
supplier.
3 ft (914 mm) within
a height 15 ft (4.5
m) above the meter/
regulator assembly
GClearance to gas service regulator vent outlet 3 ft (914 mm) 3 ft (914 mm)
HClearance to non-mechanical air supply inlet to building or the combustion air inlet to
any other appliance termination (mechanical or non-mechanical) 12 in. (305 mm) 12 in. (305 mm)
I
Clearance to a mechanical (powered) air supply inlet
***(All mechanical air intakes within 10 feet of a horizontal termination cap must be
a minimum of 3 feet below termination.)
3 ft (914 mm)*** 6 ft (1.8 m)
J
On public property: clearance above paved sidewalk or a paved driveway. 7 ft (2.1 m) 7 ft (2.1 m)**
**(A vent shall not terminate directly above a sidewalk or paved driveway which is located between two single family dwellings and
serves both dwellings.)
K
Clearance from sides of electrical service 6 in. (152 mm) 6 in. (152 mm)
Location of the vent termination must not interfere with access to the electrical service.
L
Clearance above electrical service 12 in. (305 mm) 12 in. (305 mm)
Location of the vent termination must not interfere with access to the electrical service.
M
Clearance under veranda, porch, deck, balcony or overhang
*(Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of
two sides beneath the oor.)
24 in. (610 mm)* 24 in. (610 mm)*
Vinyl or composite overhang 42 in. (1067 mm) 42 in. (1067 mm)
U.S.A. Installations: In accordance with the current ANSI Z223.1/NFPA 54, National Fuel Gas Code.
Canadian Installations: In accordance with the current CSA B149.1, Natural Gas and Propane Installation Code.
16 Majestic • MARQ42STIN Installation Manual • 2272-980 Rev. L • 7/23
C. Approved Pipe
This appliance is approved for use with Hearth & Home
Technologies DVP venting systems. Refer to Section
12.A for vent component information and dimensions.
DO NOT mix pipe, ttings or joining methods from differ-
ent manufacturers.
The pipe is tested to be run inside an enclosed wall.
There is no requirement for inspection openings at each
joint within the wall.
WARNING! Risk of Fire or Asphyxiation. This appli-
ance requires a separate vent. DO NOT vent to a pipe
serving a separate solid fuel burning appliance.
D. Use of Elbows
WARNING! Risk of Fire. This appliance requires a mini-
mum of 24 inches of vertical venting before attaching any
elbow to the appliance. DO NOT attach elbow directly to
the appliance.
Diagonal runs have both vertical and horizontal vent as-
pects when calculating the effects. Use the rise for the
vertical aspect and the run for the horizontal aspect. See
Figure 4.4.
Two 45º elbows may be used in place of one 90º elbow.
On 45º runs, one foot of diagonal is equal to 8-1/2 in. (216
mm) horizontal run and 8-1/2 in. (216 mm) vertical run. A
length of straight pipe is allowed between two 45º elbows.
See Figure 4.4.
Figure 4.5 shows the vertical and horizontal offsets for
DVP elbows.
Figure 4.4
HORIZONTAL
VERTICAL
RUN
RISE
EFFECTIVE
LENGTH
DVP
Pipe
Effective Length Rise/Run
Inches Millimeters Inches Millimeters
DVP4 4 102 2-3/4 70
DVP6 6 152 4-1/4 108
DVP12 12 305 8-1/2 216
DVP24 24 610 17 432
DVP36 36 914 25-1/2 648
DVP48 48 1219 34 864
DVP6A 3 to 6 76 to 152 2-1/8-4-1/4 54-108
DVP12A 3 to 12 76 to 305 2-1/8-8-1/2 54-216
17
Majestic • MARQ42STIN Installation Manual • 2272-980 Rev. L • 7/23
Y
X
X
X
Vent Type X
Inches Millimeters
DVP 16-1/4 413
Figure 4.5 Vertical and Horizontal Offset for DVP and SLP Elbows
Vent
Type
X Y
Inches Millimeters Inches Millimeters
DVP 4-1/2 114 17 432
E. Measuring Standards
Vertical and horizontal measurements listed in the vent
diagrams were made using the following standards:
• Pipe measurements are shown using the effective length
of pipe. See Section 12.A Figure 12.1 for information on
effective length of pipe components.
• Horizontal terminations are measured to the outside
mounting surface (ange of termination cap) (see Figure
4.6).
• Vertical terminations are measured to top of last section
of pipe. See Figure 4.7.
• Horizontal pipe installed level with no rise.
Figure 4.6 Measure to Outside Mounting Surface
Figure 4.7. Measure to Top of Last Section of Pipe
MEASURE TO SHADED SURFACE
(OUTSIDE MOUNTING SURFACE)
18 Majestic • MARQ42STIN Installation Manual • 2272-980 Rev. L • 7/23
General Rules:
• SUBTRACT 3 ft. from the total H measurement for each
90º elbow installed horizontally.
• SUBTRACT 1-1/2 ft. from the total H measurement for
each 45º elbow installed horizontally.
• A maximum of three 90º elbows (or six 45º elbows) may
be used in any vent conguration. Some elbows may be
installed horizontally. See Figure 4.14.
• Elbows may be placed back to back anywhere in the
system.
• Any 90º elbow may be replaced with two back to back
45º elbows.
• When penetrating a combustible wall, a wall shield
restop must be installed.
• When penetrating a combustible ceiling, a ceiling restop
must be installed.
• This appliance requires a minimum of 24 inches of verti-
cal pipe attached directly to the appliance starting collar
before attaching a 90 degree or 45 degree elbow.
• Horizontal runs of vent do not require vertical rise;
horizontal runs may be level.
• Horizontal termination cap should have a 1/4 inch
downward slant to allow any moisture in cap to be
released. See Figure 4.8.
F. Vent Diagrams
Figure 4.8
1/4 in. max.
(6 mm)
19
Majestic • MARQ42STIN Installation Manual • 2272-980 Rev. L • 7/23
Figure 4.10
INSTALLED
HORIZONTALLY
H1
H2
V1
V
1
H1
Figure 4.9
One Elbow
Two Elbows
Fire Risk. Explosion Risk.
Do NOT pack insulation or other combustibles between ceiling restops.
• ALWAYS maintain specied clearances around venting and restop systems.
• Install wall shield and ceiling restops as specied.
Failure to keep insulation or other material away from vent pipe may cause re.
WARNING
V1 Minimum H1 Maximum
2 ft 610 mm 7 in* 178 mm
3 ft 914 mm 2 ft 610 mm
4 ft 1.2 m 4 ft 1.2 m
5 ft 1.5 m 9 ft 2.7 m
6 ft 1.8 m 12 ft 3.7 m
7 ft 2.1 m 14 ft 4.3 m
10 ft 3.0 m 20 ft 6.1 m
20 ft 6.1 m 40 ft 12.2 m
After V1= 6 ft then H1 = 2 x V ft Maximum
V1 + H1 = 60 ft Maximum
*when used with approved termination caps
V1 Minimum H1+ H2
3 ft 914 mm 18 in 457 mm
4 ft 1.2 m 3 ft 914 mm
5 ft 1.5 m 7 ft 2.1 m
6 ft 1.8 m 10 ft 3.0 m
7 ft 2.1 m 12 ft 3.7 m
10 ft 3.0 m 18 ft 5.5 m
20 ft 6.1 m 20 ft 6.1 m
After V1= 6 ft then H1 = 2 x V1 ft Maximum
V1 + H1 + H2= 60 ft Maximum
H1 + H2= 20 ft Maximum
Note: Must have a 24 inches minimum
vertical vent before attaching any
elbow to the appliance.
Note: Flue restrictor is permit-
ted ONLY on 30 ft. minimum
vertical runs with no elbows.
Note: Flue restrictor is permit-
ted ONLY on 30 ft. minimum
vertical runs with no elbows.
Note: Must have a 24 inches minimum
vertical vent before attaching any
elbow to the appliance.
Top Vent - Horizontal Termination
20 Majestic • MARQ42STIN Installation Manual • 2272-980 Rev. L • 7/23
Figure 4.11
Top Vent - Horizontal Termination - (continued)
Three Elbows
H2
H1
V2
V1
V1H1V2 H2
2 ft 610 mm 7 in 178 mm *H2 Max = 2 X V2
3 ft 914 mm 2 ft 610 mm *H2 Max = 2 X V2
4 ft 1.2 m 4 ft 1.2 m *H2 Max = 2 X V2
5 ft 1.5 m 9 ft 2.7 m *H2 Max = 2 X V2
6 ft 1.8 m 12 ft 3.7 m *H2 Max = 2 X V2
7 ft 2.1 m 14 ft 4.3 m *H2 Max = 2 X V2
10 ft 3.0 m 20 ft 6.1 m *H2 Max = 2 X V2
V1 + H1 must be adhered to.
* V2 has no specic restrictions EXCEPT,
Ht max = 2 x Vt and Vtotal + Htotal cannot exceed 60 ft Maximum
Note: Flue restrictor is permit-
ted ONLY on 30 ft. minimum
vertical runs with no elbows.
Note: Must have a 24 inches minimum
vertical vent before attaching any
elbow to the appliance.
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