Majestic MERC32VL Installation Manual
Installation Manual
Installation and Appliance Setup
INSTALLER: Leave this manual with party responsible for use and operation.
OWNER: Retain this manual for future reference.
Pour demander un exemplaire en français de ce Manuel
du propriétaire, visitez www.majesticproducts.com.
NOTICE: DO NOT discard this manual!
MERCURY
SERIES
Models:
MERC32IN
MERC32IL
MERC32VN
MERC32VL
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 fl 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.
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.
- 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 fi re department.
• Installation and service must be performed
by a qualifi ed installer, service agency, or the
gas supplier.
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 shall be installed for
the protection of children and other at-risk
individuals.
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 certifi ed kit is used.
Majestic • MERC32IN, MERC32IL, MERC32VN, MERC32VL Installation Manual • 2401-980 Rev. E • 4/17
In the Commonwealth of Massachusetts installation must be
performed by a licensed plumber or gas fi tter.
See Table of Contents for location of additional Commonwealth
of Massachusetts requirements.
1
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 Specifi c and Important Safety Information
A. Appliance Certifi cation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
B. Glass Specifi cations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
C. BTU Specifi cations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
D. High Altitude Installations . . . . . . . . . . . . . . . . . . . . . . . . . . 4
E. Non-Combustible Materials Specifi cation. . . . . . . . . . . . . . 4
F. Combustible Materials Specifi cation . . . . . . . . . . . . . . . . . 4
G. Electrical Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
H. 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 . . . . . . . . . . . . . . . . . . 6
3 Framing and Clearances
A. Appliance/Decorative Front Dimension Diagrams . . . . . . . 7
B. Clearances to Combustibles . . . . . . . . . . . . . . . . . . . . . . . 9
C. Constructing the Appliance Chase . . . . . . . . . . . . . . . . . . 10
4 Termination Location and Vent Information
A. Vent Termination Minimum Clearances . . . . . . . . . . . . . . 11
B. Chimney Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
C. Approved Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
D. Use of Elbows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
E. Measuring Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
F. Use of Flex Vent (SLP-FLEX Series 6-5/8 Inch) . . . . . . . 15
G. Vent Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7 Venting and Chimneys
A. Assemble Vent Sections . . . . . . . . . . . . . . . . . . . . . . . . . 36
B. Assemble Slip Sections . . . . . . . . . . . . . . . . . . . . . . . . . . 37
C. Secure the Vent Sections . . . . . . . . . . . . . . . . . . . . . . . . . 38
D. Disassemble Vent Sections . . . . . . . . . . . . . . . . . . . . . . . 38
E. Vertical Termination Requirements . . . . . . . . . . . . . . . . . . 39
F. Horizontal Termination Requirements . . . . . . . . . . . . . . . 40
8 Electrical Information
A. General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
B. Wiring Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
9 Gas Information
A. Fuel Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
B. Gas Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
C. Gas Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
D. High Altitude Installations . . . . . . . . . . . . . . . . . . . . . . . . . 46
E. Air Shutter Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
10 Finishing
A. Facing Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
B. Mantel and Wall Projections . . . . . . . . . . . . . . . . . . . . . . . 48
C. Decorative Front Dimensions for Finishing . . . . . . . . . . . 50
11 Appliance Setup
A. Fixed Glass Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
B. Remove the Shipping Materials . . . . . . . . . . . . . . . . . . . 51
C. Clean the Appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
D. Install the Log Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . 52
E. Ember and Lava Rock Placement . . . . . . . . . . . . . . . . . . 54
F. Install Majestic Decorative Front/AngledHood . . . . . . . . . 55
5 Vent Clearances and Framing
A. Pipe Clearances to Combustibles . . . . . . . . . . . . . . . . . . 28
B. Wall Penetration Framing/Firestops . . . . . . . . . . . . . . . . . 29
C. Ceiling Firestop/Floor Penetration Framing . . . . . . . . . . . 30
D. Install Attic Insulation Shield . . . . . . . . . . . . . . . . . . . . . . . 30
6 Appliance Preparation
A. Vent Collar Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . 31
B. Installing the Optional Heat-Zone® Gas Kit . . . . . . . . . . . 35
C. Securing and Leveling the Appliance . . . . . . . . . . . . . . . . 35
2
Majestic • MERC32IN, MERC32IL, MERC32VN, MERC32VL Installation Manual • 2401-980 Rev. E • 4/17
12 Reference Materials
A. Vent Components Diagrams . . . . . . . . . . . . . . . . . . . . . . 56
B. Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
= Contains updated information.
Installation Standard Work Checklist
ATTENTION INSTALLER:
Follow this Standard Work Checklist
This standard work checklist is to be used by the installer in conjunction with, not instead of, the instructions contained in this
installation manual.
Customer:
Lot/Address:
Model (circle one): MERC32IN MERC32IL
MERC32VN MERC32VL
WARNING! Risk of Fire or Explosion! Failure to install appliance according to these instructions could
lead to a ¿ re or explosion.
Appliance Install YES IF NO, WHY?
Veri¿ ed that the chase is insulated and sealed. (Pg. 10) __________________________
Veri¿ ed clearances to combustibles. (Section 3) ___________________________
Fireplace is leveled and secured. (Pg. 35) ___________________________
Venting/Chimney Section 7 (Pg. 36-41)
Venting con¿ guration complies to vent diagrams. ___________________________
Venting installed, locked and secured in place with proper clearance. ___________________________
If required, elbow heat shield installed per requirements. (Pg. 31, 32, 50) ___________________________
Firestops installed. ___________________________
Attic insulation shield installed. ___________________________
Exterior wall/Roof À ashing installed and sealed. ___________________________
Terminations installed and sealed. ___________________________
Date Installed:
Location of Fireplace:
Installer:
Dealer/Distributor Phone #
Serial #:
Electrical Section 8 (Pg. 42-45)
Unswitched power (110-120 VAC) provided to the appliance.
(If applicable: IPI system and/or fan installed) ___________________________
Switch wires properly installed. ___________________________
Gas Section 9 (Pg. 46-47)
Proper appliance for fuel type. ___________________________
Was a conversion performed? ___________________________
Leak check performed and inlet pressure veri¿ ed. ___________________________
Veri¿ ed proper air shutter setting for installation type. ___________________________
Finishing Section 10 (Pg. 48-50)
Combustible materials not installed in non-combustible areas. ___________________________
Veri¿ ed all clearances meet installation manual requirements. ___________________________
Mantels and wall projections comply with installation manual requirements. ___________________________
Appliance Setup Section 11 (Pg. 51-55)
All packaging and protective materials removed (inside & outside of appliance). ___________________________
Refractories, logs,
Glass assembly installed and secured. ___________________________
Accessories installed properly. ___________________________
Mesh, doors, or decorative front properly installed. ___________________________
Manual bag and all of its contents are removed from inside/under
the appliance and given to party responsible for use and operation. ___________________________
Started appliance and veri¿ ed no gas leaks exist. ___________________________
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.
Comments: Further description of the issues, who is responsible (Installer/ Builder/ Other Trades, etc) and corrective
action needed _____________________________________________________________________________________
_________________________________________________________________________________________________
_________________________________________________________________________________________________
Comments Communicated to party responsible ____________________ by ______________________on ___________
(Builder / Gen. Contractor/) (Installer) (Date)
Î = Contains updated information.
media and embers installed correctly. ___________________________
2401-982 Rev. C 11/16
Majestic • MERC32IN, MERC32IL, MERC32VN, MERC32VL Installation Manual • 2401-980 Rev. E • 4/17
3
1
1
Product Specifi c and Important Safety Information
A. Appliance Certifi cation
MODELS: MERC32IN, MERC32IL, MERC32VN, MERC32VL
LABORATORY: Underwriters Laboratories, Inc. (UL)
TYPE: Direct Vent Heater
STANDARD: ANSI Z21.88-2014/CSA 2.33-2014
This product is listed to ANSI standards for “Vented Gas
Fireplace Heaters” and applicable sections of “Gas Burning Heating Appliances for Manufactured Homes and
Recreational Vehicles”, and “Gas Fired Appliances for
Use at High Altitudes”.
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.
NOT INTENDED FOR USE AS A PRIMARY HEAT SOURCE.
This appliance is tested and approved as either supplemental room heat or as a decorative appliance. It should not be
factored as primary heat in residential heating calculations.
B. Glass Specifi cations
Hearth & Home Technologies appliances manufactured
with tempered glass may be installed in hazardous locations such as bathtub enclosures as defi ned by the
Consumer Product Safety Commission (CPSC). The
tempered glass has been tested and certifi ed to the re-
quirements of ANSI Z97.1 and CPSC 16 CFR 1202
(Safety Glazing Certifi cation Council SGCC# 1595 and
1597. Architectural Testing, Inc. Reports 02-31919.01
and 02-31917.01).
This statement is in compliance with CPSC 16 CFR Sec-
tion 1201.5 “Certifi cation and labeling requirements”
which refers to 15 U.S. Code (USC) 2063 stating “…Such
certifi cate shall accompany the product or shall otherwise
be furnished to any distributor or retailer to whom the
product is delivered.”
Some local building codes require the use of tempered
glass with permanent marking in such locations. Glass
meeting this requirement is available from the factory.
Please contact your dealer or distributor to order.
C. BTU Specifi cations
Models
MERC32IN (NG)
MERC32IL (LP)
MERC32VN (NG)
MERC32VL (LP)
(0-2000 FT)
(0-2000 FT)
(0-2000 FT)
(0-2000 FT)
Maximum
Input
BTU/h
19,100 13,500 #45
19,100 14,500 #55
19,100 13,500 #45
19,100 14,500 #55
Minimum
Input
BTU/h
Orifi ce
Size
(DMS)
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 certifi ed 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 installations at
elevations above 4500 feet (1370 m).
Check with your local gas utility to determine proper
orifi ce size.
E. Non-Combustible Materials Specifi cation
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 Specifi cation
Materials made of or surfaced with wood, compressed paper, plant fi bers, plastics, or other material that can ignite
and burn, whether fl 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 protected
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.
4
Majestic • MERC32IN, MERC32IL, MERC32VN, MERC32VL Installation Manual • 2401-980 Rev. E • 4/17
Note: The following requirements reference various
Massachusetts and national codes not contained in this
document.
H. 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 fi nished grade in the area of the venting, in-
cluding but not limited to decks and porches, the following
requirements shall be satisfi ed:
Installation of Carbon Monoxide Detectors
At the time of installation of the side wall horizontal vented
gas fueled equipment, the installing plumber or gas fi tter
shall observe that a hard wired carbon monoxide detector
with an alarm and battery back-up is installed on the fl oor
level where the gas equipment is to be installed. In addition, the installing plumber or gas fi tter shall observe that
a battery operated or hard wired carbon monoxide detector with an alarm is installed on each additional level of
the dwelling, building or structure served by the side wall
horizontal vented gas fueled equipment. It shall be the
responsibility of the property owner to secure the services
of qualifi ed licensed professionals for the installation of
hard wired carbon monoxide detectors.
In the event that the side wall horizontally vented gas fueled equipment is installed in a crawl space or an attic,
the hard wired carbon monoxide detector with alarm and
battery back-up may be installed on the next adjacent
fl 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 during said thirty (30) day period, a battery operated carbon
monoxide detector with an alarm shall be installed.
Inspection
The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not approve the
installation unless, upon inspection, the inspector observes carbon monoxide detectors and signage installed
in accordance with the provisions of 248 CMR 5.08(2)(a)1
through 4.
Exemptions
The following equipment is exempt from 248 CMR 5.08(2)
(a)1 through 4:
• The equipment listed in Chapter 10 entitled “Equipment
Not Required To Be Vented” in the most current edition
of NFPA 54 as adopted by the Board; and
• Product Approved side wall horizontally vented gas fueled equipment installed in a room or structure 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 provide the parts for venting the fl ue gases, but identifi es
“special venting systems”, the following requirements
shall be satisfi ed by the manufacturer:
Approved Carbon Monoxide Detectors
Each carbon monoxide detector as required in accordance with the above provisions shall comply with NFPA
720 and be ANSI/UL 2034 listed and IAS certifi ed.
Signage
A metal or plastic identifi cation 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 fueled 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 OBSTRUCTIONS”.
Majestic • MERC32IN, MERC32IL, MERC32VN, MERC32VL Installation Manual • 2401-980 Rev. E • 4/17
• The referenced “special venting system” instructions
shall be included with the appliance or equipment installation instructions; and
• The “special venting systems” shall be Product Approved by the Board, and the instructions for that system shall include a parts list and detailed installation
instructions.
A copy of all installation instructions for all Product Approved side wall horizontally vented gas fueled equipment, 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 Commonwealth of Massachusetts requirements.
5
2
2
Getting Started
A. Design and Installation Considerations
Hearth & Home Technologies 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 additional outside air source is
required.
Installation MUST comply with local, regional, state and
national codes and regulations. Consult insurance carrier,
local building inspector, fi re offi cials 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 confi guration to be used.
• Gas supply piping requirements.
• Electrical wiring requirements.
• Framing and fi nishing details.
• Whether optional accessories—devices such as a fan,
wall switch, or remote control—are desired.
Installation and service of this
appliance should be performed
by qualifi ed personnel. Hearth &
Home Technologies recommends
NFI certifi ed professionals.
Improper installation, adjustment, alteration, service or
maintenance can cause injury or property damage. For
assistance or additional information, consult a qualifi ed
service technician, service agency or your dealer.
B. Good Faith Wall Surface/TV Guidelines
TO CEILING
100°F
110°F
FIREPLACE
OPENING
130°F
140°F
150°F
Figure 2.1 Good Faith Wall Surface Temperatures Above Appliance
NOTICE: Temperatures listed above are taken with a temperature
measuring probe as prescribed by the test standard used for
appliance certifi cation. 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.
6
Majestic • MERC32IN, MERC32IL, MERC32VN, MERC32VL Installation Manual • 2401-980 Rev. E • 4/17
18 in.
12 in.
6 in.
MEASUREMENTS FROM
TOP EDGE O F THE OPEN ING
APPLIA NCE FRONT
125°F
24 in.
120°F
115°F
48 in.
42 in.
36 in.
30 in.
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 (300ºF minimum continuous exposure
rating)
One 1/4 in. female connection (for optional fan).
D. Inspect Appliance and Components
• Carefully remove the appliance and components from
the packaging.
• The vent system components and decorative 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.
• Read all of the instructions before starting the instal-
lation. Follow these instructions carefully during the
installation to ensure maximum safety and benefi t.
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.
• Modifi cation 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 fi re hazard.
WARNING! Risk of Fire, Explosion or Electric Shock!
DO NOT use this appliance if any part has been under
water. Call a qualifi ed service technician to inspect the
appliance and to replace any part of the control system
and/or gas control which has been under water.
3
3
Framing and Clearances
A. Appliance/Decorative Front Dimension Diagrams
Dimensions are actual appliance dimensions. Use for reference only. For framing dimensions and clearances refer to Section 5.
HEAT-ZONE ACCESS
GAS LINE ACCESS
N
O
P
Q
Ø
C
R
S
T
F
B
A
M
L
K
HEAT-ZONE ACCESS
J
Ø
D
E
V
U
H
G
ELECTRICAL
ACCESS
I
Figure 3.1 Appliance Dimensions
Majestic • MERC32IN, MERC32IL, MERC32VN, MERC32VL Installation Manual • 2401-980 Rev. E • 4/17
MERC32 MERC32
Location Inches Millimeters Location Inches Millimeters
A 36 914 L 16-5/16 414
B 31-1/8 791 M 1/2 13
C 27-3/16 691 N 25-3/4 654
D 18-1/16 459 O 12-7/8 327
E 34-5/16 872 P 15-7/8 403
F 31 787 Q 6-5/8 168
G 6-3/16 157 R 30 762
H 2-3/8 60 S 2-3/16 56
I 36-1/4 921 T 6 152
J 8 203 U 1-1/16 27
K 8-13/16 224 V 30 762
7
See Section 10 for facing and fi nishing detail.
MERC32 DECORATIVE FRONT
SRV2401-021
B
F
A
G
C
E
D
AB C D E F G
in. 29 20-7/8 30-15/16 2-5/8 1-1/2 27-1/8 28-5/8
mm 737 530 786 67 38 689 727
Figure 3.3 Decorative Front Dimensions
8
Majestic • MERC32IN, MERC32IL, MERC32VN, MERC32VL Installation Manual • 2401-980 Rev. E • 4/17
B. Clearances to Combustibles
K
C
A
L
F
I
B
G
E
D
J
J
G
A
F
C
A
H
M
N
When selecting a location for the appliance it is important
to consider the required clearances to walls (see Figure
3.4).
WARNING! Risk of Fire or Burns! Provide adequate
clearance around air openings and for service access.
Due to high temperatures, the appliance should be
located out of traffi c and away from furniture and
draperies.
NOTICE: Illustrations refl ect typical installations and are
FOR DESIGN PURPOSES ONLY. Illustrations/diagrams
are not drawn to scale. Actual installation may vary due to
individual design preference.
Models A B C D E Min. F Min. G H I J K L M N
MERC32
Figure 3.4 Appliance Locations
in. 42 37 59-1/2
mm 1067 940 1511 25 13 1118 1581 413 1232 1746 383 191 181
See Section 10.B for
Alcove Installation
1 1/2 44 62-1/4 16-1/4 48-1/2 68-3/4 15-1/16 7-1/2 7-1/8
Majestic • MERC32IN, MERC32IL, MERC32VN, MERC32VL Installation Manual • 2401-980 Rev. E • 4/17
9
A
FROM TOP
OF HOOD
TO CEILING
E
F
B
C
D
MINIMUM FRAMING DIMENSIONS*
ABCDEFGHIJ
Models
MERC32
DVP
Pipe
Rough
Opening
(Width)
in. 10 8-5/8 34-3/4 16-1/4 16-1/4 37 32 0 0 1/2 1/2 36
mm 254 219 883 413 413 940 813 0 0 13 13 915
SLP
Pipe
Rough
Opening
(Width)
Rough
Opening
(Height)
**DVP
Pipe
Rough
Opening
(Depth)
SLP
Pipe
Rough
Opening
(Depth)
* Adjust framing dimensions for interior sheathing (such as sheetrock)
C** Add 12 inches for rear venting with one 90º elbow.
Figure 3.5 Clearances to Combustibles
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 fi restops and wall shield
fi 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.
Chases should be constructed in the manner of all outside walls of the home to prevent cold air drafting problems. The chase should not break the outside building
envelope in any manner.
Walls, ceiling, base plate and cantilever fl oor of the chase
should be insulated. Vapor and air infi ltration barriers
should be installed in the chase as per regional codes for
the rest of the home. Additionally, in regions where cold
air infi ltration may be an issue, the inside surfaces may be
sheetrocked and taped (or an equivalent method may be
used) to achieve maximum air tightness.
10
Majestic • MERC32IN, MERC32IL, MERC32VN, MERC32VL Installation Manual • 2401-980 Rev. E • 4/17
G
Combustible
Floor
Combustible
Flooring
I
Behind
Appliance
H
Sides of
Appliance
Rough
Opening
(Width)
J
Clearance
to Ceiling
To further prevent drafts, the wall shield and ceiling fi re-
stops should be caulked with caulk with a minimum of
300ºF continuous exposure rating to seal gaps. Gas
line holes and other openings should be caulked with
caulk with a minimum of 300ºF 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.
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 specifi ed 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 fi replace or chimney.
• Failure to maintain airspace could cause overheating
and a fi re.
Front of
Appliance
4
4
Termination Location and Vent Information
A. Vent Termination Minimum Clearances
WARNING
Fire Risk.
Maintain vent clearance to combustibles as
specifi ed.
• DO NOT pack air space with insulation or other
materials.
Failure to keep insulation or other materials away
from vent pipe may cause overheating and fi re.
6 in. (minimum) up to 20 in.
AB
152 mm/508 mm
20 in. and over 0 in. minimum
Gas, Wood or Fuel Oil
Termination Cap
B
A *
18 in. minimum
457 mm
HORIZONTAL
OVERHANG
2 FT.
MIN.
GAS DIRECT VENT
TERMINATION CAP
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
* H minimum may vary depending on regional snowfall.
Refer to local codes.
20 INCHES MIN.
LOWEST
DISCHARGE
OPENING
H (MIN.) - MINIMUM HEIGHT FROM ROOF
TO LOWEST DISCHARGE OPENING
X
12
ROOF PITCH
IS X/ 12
VERTICAL
WALL
Gas
Termination
Cap **
If using decorative cap cover(s), this distance may need to be
*
increased. Refer to the installation instructions supplied with the
decorative cap cover.
In a staggered installation with both gas and wood or fuel oil
**
terminations, the wood or fuel oil termination cap must be
higher than the gas termination cap.
Figure 4.2 Staggered Termination Caps
Figure 4.1 Minimum Height From Roof To Lowest Discharge
Opening
Majestic • MERC32IN, MERC32IL, MERC32VN, MERC32VL Installation Manual • 2401-980 Rev. E • 4/17
11
B. Chimney Diagram
C
V
B
J
V
V
= VENT TERMINAL
X
= AIR SUPPLY INLET
B
D
V
V
V
A
= AREA WHERE TERMINAL IS NOT PERMITTED
A = 12 inches.................clearances above grade, veranda,
porch, deck or balcony
12 inches.................clearance to window or door that may
B =
be opened, or to permanently closed
window
C = 18 inches.................clearance below unventilated soffi t
18 inches.................clearance below ventilated soffi t
30
inches .................clearance below vinyl soffits and
electrical service
D = 6 inches...................clearance to outside corner
E = 6 inches...................clearance to inside corner
F = 3 ft. (Canada) ..........not to be installed above a gas me-
ter/regulator assembly within 3 feet
horizontally from the center-line of the
regulator
G = 3 ft ...........................clearance to gas service regulator
vent outlet
H =
12 inches.................clearance to non-mechanical (unpow-
ered) air supply inlet, combustion air
inlet or direct-vent termination
i = 3 ft. (U.S.A.)
6 ft. (Canada) ...........clearance to a mechanical (powered)
air supply inlet
All mechanical air intakes within 10 feet of a termination cap
must be a minimum of 3 feet below termination.
J = 7 ft. ......................... On public property: clearance above
paved sidewalk or a paved driveway.
A vent shall not terminate directly above a sidewalk or paved
driveway which is located between two single family dwellings
and serves both dwellings.
F
B
G
O
N
P
R
Q
H or i
V
X
M
V
H
V
H
E
V
V
A
V
K
V
L
Electrical
Service
C
V
K
V
Covered Alcove Applications
(Spaces open only on one side and with an overhang)
N = 6 inches ........... non-vinyl sidewalls
12 inches ......... vinyl sidewalls
O = 18 inches ......... non-vinyl soffi t and overhang
42 inches ......... vinyl soffi t and overhang
P = 8 ft.
Q
MIN
1 cap 3 feet 2 x Q
2 caps 6 feet 1 x Q
3 caps 9 feet 2/3 x Q
4 caps 12 feet 1/2 x Q
Q
= # termination caps x 3 R
MIN
Measure vertical clearances from this surface.
Measure horizontal clearances from this surface.
= (2 / # termination caps) x Q
MAX
CLEARANCE = 6 IN.
R
MAX
ACTUAL
ACTUAL
ACTUAL
ACTUAL
ACTUAL
K = 6 inches................. clearance from sides of electrical
service
L = 12 inches................ clearance above electrical service
Location of the vent termination must not interfere with access to the
electrical service.
M = 18 inches .................... clearance under veranda, porch, deck,
balcony or overhang
42
inches ................vinyl or composite overhang
Permitted when veranda, porch, deck or balcony is fully open
on a minimum of 2 sides beneath the fl oor.
Figure 4.3 Minimum Clearances for Termination
12
Majestic • MERC32IN, MERC32IL, MERC32VN, MERC32VL Installation Manual • 2401-980 Rev. E • 4/17
CAUTION! Risk of Burns! Termination caps are HOT,
consider proximity to doors, traffi c areas or where people
may pass or gather (sidewalk, deck, patio, etc.). Listed cap
shields available. Contact your dealer.
• Local codes or regulations may require different
clearances.
• Vent system termination is NOT permitted in screened
porches.
• Vent system termination is permitted in porch areas with
two or more sides open.
• Hearth & Home Technologies assumes no responsibility
for the improper performance of the appliance when the
venting system does not meet these requirements.
• Vinyl protection kits are suggested for use with vinyl siding.
C. Approved Pipe
Approved Pipe - Rigid
This appliance is approved for use with Hearth & Home
Technologies DVP or SLP venting systems. Refer to Section 12.A for vent component information and dimensions.
DO NOT mix pipe, fi 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 appliance requires a separate vent. DO NOT vent to a pipe
serving a separate solid fuel burning appliance.
Approved Pipe - Flex
This appliance is approved for use with Hearth & Home
Technologies SLP-FLEX (6-5/8 in.) and SLP-FLEX7 (7
inch) venting systems.
DO NOT mix pipe, fi ttings or joining methods from differ-
ent manufacturers. SLP-FLEX and SLP-FLEX7
venting cannot be interchanged.
SLP-FLEX (6-5/8 Inch): venting may be used in any
venting confi guration shown in the venting tables provid-
ed that the horizontal vent length is reduce by 25%.
SLP-FLEX7 (7 Inch-Canada Only): venting requires
adapter collars to tranisition from the 6-5/8 inch appliance
starting collar and to the 6-5/8 inch termination cap. Refer
to installation instructions included with the SLP-FLEX7
collar adapter (SLP-FLEX7A or SLP-FLEX7-AM). SLPFLEX7 Series venting is approved for use in Canada only.
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 appliance requires a separate vent. DO NOT vent to a pipe
serving a separate solid fuel burning appliance.
Majestic • MERC32IN, MERC32IL, MERC32VN, MERC32VL Installation Manual • 2401-980 Rev. E • 4/17
13
D. Use of Elbows
Diagonal runs have both vertical and horizontal vent aspects 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 or SLP elbows.
Y
X
VERTICAL
RISE
SLP
Pipe
EFFECTIVE
LENGTH
RUN
HORIZONTAL
Effective Length Rise/Run
Inches Millimeters Inches Millimeters
SLP4 4 102 2-3/4 70
SLP6 6 152 4-1/4 108
SLP12 12 305 8-1/2 216
SLP24 24 610 17 432
SLP36 36 914 25-1/2 648
SLP48 48 1219 34 864
SLP6A 3 to 6 76 to 152
SLP12A 3 to 12 76 to 305
2-1/8-4-1/4 54-108
2-1/8-8-1/2 54-216
Vent
Type
Inches Millimeters Inches Millimeters
XY
DVP 4-1/2 114 17 432
SLP 5 127 11-3/4 298
X
X
Vent Type
Inches Millimeters
DVP 16-1/4 413
SLP 11-1/4 286
Figure 4.5 Vertical and Horizontal Offset for DVP and SLP Elbows
X
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
DVP12A 3 to 12 76 to 305
Figure 4.4
14
Majestic • MERC32IN, MERC32IL, MERC32VN, MERC32VL Installation Manual • 2401-980 Rev. E • 4/17
2-1/8-4-1/4 54-108
2-1/8-8-1/2 54-216
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 DVP, Figure
12.7 for SLP) for information on effective length of pipe
components.
• Horizontal terminations are measured to the outside
mounting surface (fl ange of termination cap) (see Figure
4.3).
• Vertical terminations are measured to bottom of
termination cap.
• Horizontal pipe installed level with no rise.
• Horizontal termination cap should have a 1/4 inch
downward slant to allow any moisture in cap to be
released.
F. Use of Flex Vent (SLP-FLEX Series 6-5/8
Inch)
The fl ex vent must be supported with the spacing between
support intervals not exceeding 4 feet, with no more than
½ inch sag between supports.
A support is required at each change in venting direction,
and in any location where it is necessary to maintain the
necessary clearance to combustibles. A simple “up and
out” installation (Figure 4.6) requires only enough support to maintain the necessary clearance to combustibles.
However, the vent attachment point and the fi restop loca-
tion are considered to be supports.
TERMINATION
3 in. CLEARANCE
FLEX-VENT
CAP
1 in.
CLEARANCE
Figure 4.6 Flex Vent Pipe - Generic Fireplace Shown
Majestic • MERC32IN, MERC32IL, MERC32VN, MERC32VL Installation Manual • 2401-980 Rev. E • 4/17
15
G. Vent Diagrams
1. Top Vent - Horizontal Termination
One Elbow
Note: Use SLP Series
components only.
WARNING*
Fire Risk.
• When using SLP-HRC-SS termination cap on top
vented fi replaces, a one foot minimum vertical
vent section is required before installing first
elbow.
• Elbow heat shield required when V1 is less than
1-1/2 ft. Clearances to combustibles MUST be
maintained. See Section 5.A.
V1 Minimum* H1 Maximum**
90 Elbow Only 2 ft. 610 mm
1/2 ft. 152 mm 2 ft. 610 mm
1-1/2 ft. 457 mm 3 ft. 914 mm
2-1/2 ft. 762 mm 5 ft. 1.5 m
3-1/2 ft. 1.1 m 7 ft. 2.1 m
4-1/2 ft. 1.4 m 15 ft. 4.6 m
H
MAX. =15 ft. (4.6 m)
1
V1 + H1 MAX. = 40 ft. (12.2 m)
* See Warning.
**Note: When using SLP-FLEX (6-5/8 in.) venting, there
MUST be a 25% reduction in total H when using fl ex vent.
H
V
1
1
16
Figure 4.7
Majestic • MERC32IN, MERC32IL, MERC32VN, MERC32VL Installation Manual • 2401-980 Rev. E • 4/17
Top Vent - Horizontal Termination - (continued)
Two Elbows
Note: Use SLP Series
components only.
**Note: When using SLP-FLEX (6-5/8 in.) venting, there
MUST be a 25% reduction in total H when using fl ex vent.
H
2
H
V1 Minimum*
90 Elbow Only
1/2 ft. 152 mm 1 ft. 305 mm
1-1/2 ft. 457 mm 2 ft. 610 mm
2-1/2 ft. 762 mm 4 ft. 1.2 m
3-1/2 ft. 1.1 m 6 ft. 1.8 m
4-1/2 ft. 1.4 m 14 ft. 4.3 m
H
+ H2 MAX. =14 ft. (4.3 m)
1
V1 + H1 + H2 MAX. = 40 ft. (12.2 m)
H1 + H2 Maximum
1/2 ft. 152 mm
*
*See Warning Below.
V
1
1
Figure 4.8
INSTALLED
HORIZONTALLY
WARNING*
Fire Risk.
• When using SLP-HRC-SS termination cap on top
vented fi replaces, a one foot minimum vertical
vent section is required before installing fi rst
elbow.
Majestic • MERC32IN, MERC32IL, MERC32VN, MERC32VL Installation Manual • 2401-980 Rev. E • 4/17
17
Top Vent - Horizontal Termination - (continued)
Three Elbows
Note: Use SLP Series
components only.
V1 Minimum*
H1 Maximum H1 + H2 Maximum V
2
V1 + V2 Minimum
90 Elbow Only 1-1/2 ft. 457 mm 2 ft. 610 mm * *
1/2 ft. 152 mm 1-1/2 ft. 457 mm 4 ft. 1.2 m * *
1-1/2 ft. 457 mm 3 ft. 914 mm 6 ft. 1.8 m * *
2-1/2 ft. 762 mm 5 ft. 1.5 m 10 ft. 3.0 m * *
3-1/2 ft. 1.1 m 7 ft. 2.1 m 14 ft. 4.3 m * *
4-1/2 ft. 1.4 m 14 ft. 4.3 m 14 ft. 4.3 m * *
H
+ H2 MAX. =14 ft. (4.3 m)
1
*No specifi c restrictions on this value EXCEPT V1 + V2 + H CANNOT exceed 40 ft. (12.2 m)
V1 + V2 + H1 + H2 MAX. = 40 ft. (12.2 m)
* See Warning Below.
H
2
V
2
**Note: When using SLP-FLEX (6-5/8 in.) venting, there
MUST be a 25% reduction in total H when using fl ex vent.
WARNING*
Fire Risk.
• When using SLP-HRC-SS termination cap
on top vented fi replaces, a one foot minimum
vertical vent section is required before installing
fi rst elbow.
Figure 4.9
18
Majestic • MERC32IN, MERC32IL, MERC32VN, MERC32VL Installation Manual • 2401-980 Rev. E • 4/17
V
H
1
1
2. Top Vent - Vertical Termination
No Elbows
V1 = 60 ft. Max. (18.3 m)
Note: If installing a vertical vent/termination off the top of
the appliance, the optional vertical termination baffl e may
be needed.
Note: Use SLP Series
components only.
Exhaust restrictor Instructions
1. Install the exhaust restrictor over the center of the exhaust outlet in the fi rebox. See Figure 4.11.
2. Center the exhaust restrictor in the open end of the
exhaust outlet and secure through the slots on the exhaust restrictor with the 2-1/4 in. self-tapping screws
provided in the appliance manual bag.
EXHAUST BAFFLE
To access the exhaust
openings, remove the
exhaust baffl e. To re-
move exhaust baffl e, re-
move the two wing nuts.
V
1
Figure 4.10
Exhaust restrictors are recommended for these vertically terminated products which have excessive draft.
Exhaust restrictors will compensate for high draft, and
restore visual fl ame height. If the vent confi guration has
a total vertical of 15-60 feet, an exhaust restrictor may
be needed. The exhaust restrictor can be located in the
appliance manual bag.
Top Vent Application
Exhaust restrictor
Rear Vent Application
Exhaust restrictor
Note: Be sure to reinstall the exhaust baffl e
after exhaust restrictor
installation.
Figure 4.11
Majestic • MERC32IN, MERC32IL, MERC32VN, MERC32VL Installation Manual • 2401-980 Rev. E • 4/17
19
2. Top Vent - Vertical Termination - (continued)
H
1
V
1
V
2
Two Elbows
Note: Use SLP Series
components only.
V1 Minimum
H
Maximum**
1
V
2
V1 + V2 Minimum
90 Elbow Only 1-1/2 ft. 457 mm * *
1/2 ft. 152 mm 2 ft. 610 mm * *
1-1/2 ft. 457 mm 3 ft. 914 mm * *
2-1/2 ft. 762 mm 5 ft. 1.5 m * *
3-1/2 ft. 1.1 m 7 ft. 2.1 m * *
4-1/2 ft. 1.4 m 15 ft. 4.6 m * *
H
MAX. =15 ft. (4.6 m)
1
*No specifi c restrictions on this value EXCEPT V1 + V2 + H CANNOT exceed 40
ft. (12.2 m).
V1 + V2 + H1 + H2 MAX. = 40 ft. (12.2 m)
V1 + V2 + H1 MAX. = 40 ft. (12.2 m)
**Note: When using SLP-FLEX (6-5/8 in.) venting, there
MUST be a 25% reduction in total H when using fl ex vent.
Figure 4.12
Three Elbows
V
2
H
2
V1 Minimum
H
+ H2 Maximum**
1
V
2
V1 + V2 Minimum
90 Elbow Only 1/2 ft. 152 mm * *
1/2 ft. 152 mm 1 ft. 305 mm * *
1-1/2 ft. 457 mm 2 ft. 610 mm * *
2-1/2 ft. 762 mm 4 ft. 1.2 m * *
3-1/2 ft. 1.1 m 6 ft. 1.8 m * *
4-1/2 ft. 1.4 m 14 ft. 4.3 m * *
H
+ H2 MAX. =14 ft. (4.3 m)
1
*No specifi c restrictions on this value EXCEPT V
+ V2 + H CANNOT exceed 40 ft. (12.2 m).
1
V1 + V2 + H1 + H2 MAX. = 40 ft. (12.2 m)
H
1
**Note: When using SLP-FLEX (6-5/8 in.) venting, there
MUST be a 25% reduction in total H when using fl ex vent.
V
1
Note: Use SLP Series
components only.
Figure 4.13
20
INSTALLED
HORIZONTALLY
Majestic • MERC32IN, MERC32IL, MERC32VN, MERC32VL Installation Manual • 2401-980 Rev. E • 4/17
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