Heat & Glo MTL-INSERT User Manual
Model:
MTL-Insert
Owner’s Manual
Installation and Operation
CAUTION
DO NOT DISCARD THIS MANUAL
• Important operating
and maintenance
instructions included.
WARNING: If the information in these
instructions is not followed exactly, a fi re
or explosion may result causing property
damage, personal injury, or death.
• 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.
- 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.
This appliance may be installed as an OEM installation in
manufactured home (USA only) or mobile home and must be
installed in accordance with the manufacturer’s instructions and
the manufactured home construction and safety standard, Title
24 CFR, Part 3280 or Standard for Installation in Mobile Homes,
CAN/CSA Z240MH.
This appliance is only for use with the type(s) of gas indicated
on the rating plate.
• Read, understand and follow
these instructions for safe
installation and operation.
DO NOT
DISCARD
• Leave this manual with
party responsible for use
and operation.
WARNING
HOT SURFACES!
Glass and other surfaces are hot during
operation AND cool down.
Hot glass will cause burns.
• DO NOT touch glass until it is cooled
• NEVER allow children to touch glass
• Keep children away
• CAREFULLY SUPERVISE children in same room as
fi replace.
• Alert children and adults to hazards of high temperatures.
High temperatures may ignite clothing or other fl ammable
materials.
• Keep clothing, furniture, draperies and other fl ammable
materials away.
This appliance has been supplied with an integral barrier
to prevent direct contact with the fi xed glass panel. DO
NOT operate the appliance with the barrier removed.
Contact your dealer or Hearth & Home Technologies if the
barrier is not present or help is needed to properly install one.
In the Commonwealth of Massachusetts:
• installation must be performed by a licensed plumber
or gas fi tter;
• a CO detector shall be installed in the room where the
appliance is installed.
Installation and service of this appliance should be
performed by qualifi ed personnel. Hearth & Home
Technologies suggests NFI certifi ed or factory trained
professionals, or technicians supervised by an NFI
certifi ed professional.
1Heat & Glo • MTL-Insert • 2145-900 Rev. G • 6/09
Read this manual before installing or operating this appliance.
Please retain this owner’s manual for future reference.
Congratulations
Congratulations on selecting a Heat & Glo gas appliance
—an elegant and clean alternative to wood burning
appliances. The Heat & Glo gas appliance you have
selected is designed to provide the utmost in safety,
reliability, and effi ciency.
As the owner of a new appliance, you’ll want to read and
carefully follow all of the instructions contained in this
Owner’s Manual. Pay special attention to all Cautions and
Warnings.
Homeowner Reference Information
This Owner’s Manual should be retained for future
reference. We suggest that you keep it with your other
important documents and product manuals.
The information contained in this Owner’s Manual, unless
noted otherwise, applies to all models and gas control
systems.
Your new Heat & Glo gas appliance will give you years of
durable use and trouble-free enjoyment. Welcome to the
Heat & Glo family of appliance products!
We recommend that you record the following pertinent
information about your appliance.
Model Name: ___________________________________________ Date purchased/installed: __________________
Serial Number: __________________________________________ Location on appliance: ____________________
Dealership purchased from: _______________________________ Dealer Phone: __________________________
Notes: _______________________________________________________________________________________
_____________________________________________________________________________________________
Listing Label Information/Location
This product may be coveredby one or more ofthe following patents: (Nos produitssont couverts par un ouplusieurs des brevets suivants): (United States)
4593510,4686807, 4766876, 4793322, 4811534, 5000162, 5016609, 5076254, 5113843, 5191877, 5218953, 5263471, 5328356,5341794, 5347983, 5429495,
5452708,5542407, 5601073, 5613487, 5647340, 5688568, 5762062, 5775408, 5890485,5931661, 5941237, 594711 2,5996575, 6006743,6019099, 6048195,
6053165, 6145502, 6170481, 6237588, 6296474, 6374822, 6413079, 6439226, 6484712, 6543698, 6550687, 6601579, 6672860, 6688302B2, 6715724B2,
6729551, 6736133, 6748940, 6748942, D320652,D445174, D462436; (Canada)1297749, 2195264, 2225408;or other U.S. and foreignpatents pending (ou
autresbrevetsamericainsetetrangersenattente).
Î
Type of Gas
Not for use with solid fuel .
(Ne doit pas entre utilise avec un combustible solide).
Ty pe of Gas (Sorte De Gaz) :
NATURA L GAS
Gas and Electric
Information
Minimum Permissible Gas Supply for Purpos es of Input Adjustment .
Approved Minimum (De Gaz) Acceptabl e 0. 0 in w. c. (Po. Col. d’eau)
Maximum Pressure (Pression) 0. 0 in w. c. (Po. Col. d’eau)
Maximum Manifold Pressure (Pression) 0. 0 in w. c. (Po. Col. d’eau)
Minimum Manifold Pressure (Pression) 0. 0 in w. c. (Po. Col. d’eau)
T o tal Electrical Requirements: 000V ac, 00Hz., less than 00 Ampere s
AL TI TUDE : 0-0000 FT . 0000-0000FT .
MAX. INPU T BTUH: 00,000 00,000
MIN. INPU T BTUH: 00,000 00,000
ORIFICE SIZE: #XXXXX #XXXXX
The model information regarding your specifi c appliance can be found on
the rating plate usually located in the control area of the appliance.
He at & Gl o, a of Hearth & Ho me Te chnologies, Inc.
7571 215th Street West, Lakeville, MN 55044
This appliance must be installed in accordance with local codes, if any; if not, follow ANSI Z223.1
in the USA or CAN/CG A B149 installation codes. (Installer l’ appa re il selon les codes ou regl emen ts
lo caux ou , en l’absence de tels reglements, selon les codes d’in stallation CAN/CGA-B149.)
bran d
ANSI Z21X X-XXXX · CS A 2.XX-MXX · UL307B
IN CANADA
Mode l:
(Modele):
Serial
(Serie):
XXXXXXXX
XXXXXXXX
MADE IN US A
Model Number
Serial Number
Heat & Glo • MTL-Insert • 2145-900 Rev. G • 6/092
Table of Contents
1 Listing and Code Approvals
A. Appliance Certifi cation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
B. BTU Specifi cations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
C. High Altitude Installations . . . . . . . . . . . . . . . . . . . . . . . . . . 4
D. Non-Combustible Materials Specifi cation. . . . . . . . . . . . . . 4
E. Combustible Materials Specifi cation . . . . . . . . . . . . . . . . . 4
F. Electrical Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 Getting Started
A. Design and Installation Considerations . . . . . . . . . . . . . . . 5
B. Tools and Supplies Needed . . . . . . . . . . . . . . . . . . . . . . . . 5
C. Inspect Appliance and Components . . . . . . . . . . . . . . . . . . 5
3 Fireplace Size Requirements
A. Minimum Fireplace Opening . . . . . . . . . . . . . . . . . . . . . . . 6
B. Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4 Termination Locations
A. Vent Termination Minimum Clearances . . . . . . . . . . . . . . . 8
5 Vent Information and Diagrams
A. Vent Table Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
B. Horizontal Venting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
C. Measuring Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6 Installation Preparation
A. Flue Damper. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
B. Chimney . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
C. Gas Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
D. Hearth or Hearth Extension . . . . . . . . . . . . . . . . . . . . . . . 10
E. Fireplace Conversion Notice . . . . . . . . . . . . . . . . . . . . . . 10
F. Remote Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7 Installing Vent Pipe and Appliance
A. Venting Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
B. Connecting Vent Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
C. Placing, Securing and Leveling the Appliance . . . . . . . . . 12
D. Installing Termination Cap . . . . . . . . . . . . . . . . . . . . . . . . 13
8 Gas Information
A. Fuel Conversions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
B. Gas Pressures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
C. Gas Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
9 Electrical Information
A. Wiring the Appliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
B. Optional Junction Box Installation . . . . . . . . . . . . . . . . . . 17
10 Finishing
A. Mantel Projections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
11 Appliance Setup
A. Remove Shipping Materials . . . . . . . . . . . . . . . . . . . . . . . 20
B. Clean the Appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
C. Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
D. Ember Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
E. Positioning the Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
F. Glass Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
G. Air Shutter Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
12 Operating Instructions
A. Before Lighting Appliance. . . . . . . . . . . . . . . . . . . . . . . . . 25
B. Lighting Appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
C. Check Pilot Flame Appearance . . . . . . . . . . . . . . . . . . . . 27
D. After Appliance is Lit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
E. Frequently Asked Questions . . . . . . . . . . . . . . . . . . . . . . 28
13 Troubleshooting
A. Standing Pilot Ignition System . . . . . . . . . . . . . . . . . . . . . 29
14 Maintaining and Servicing Appliance
A. Maintenance Tasks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
15 Reference Materials
A. Appliance Dimension Diagram . . . . . . . . . . . . . . . . . . . . . 33
B. Vent Kits Components . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
C. Service Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
D. Limited Lifetime Warranty . . . . . . . . . . . . . . . . . . . . . . . . . 38
E. Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Î
Î
Î = Contains updated information.
3Heat & Glo • MTL-Insert • 2145-900 Rev. G • 6/09
1
1
Listing and Code Approvals
A. Appliance Certifi cation
MODELS: MTL-INSERT
LABORATORY: Underwriters Laboratories, Inc. (UL)
TYPE: Vented Gas Fireplace Heaters
STANDARD: ANSI Z21.88a-2007/CSA 2.33a-2007
ANSI Z21.88-2005/CSA 2.33-2005
This product is listed to ANSI standards for “Vented Gas
Appliance Heaters” and applicable sections of “Gas Burning Heating Appliances for Manufactured Homes and
Recreational Vehicles”, and “Gas Fired Appliances for
Use at High Altitudes”.
NOT INTENDED FOR USE AS A PRIMAR Y HEA T SOURCE.
This appliance is tested and approved as either supplemental room heat or as a decorative appliance. It should not be
factored as primary heat in residential heating calculations.
Note: To assure top performance, safety and effi ciency,
inserts must be installed with an approved fl ue liner as per
CAN/CGA B-149 or National Fuel Gas Code ANSI Z223 and
these instructions.
Note: This installation must conform with local codes. In the
absence of local c odes you must comply w ith the National
Fuel Gas Code, ANSI Z223.1 -latest edition in the U.S.A. and
the CAN/CGA B149 Installation Codes in Canada.
C. High Altitude Installations
U.L. Listed gas appliances are tested and approved without requiring changes for elevations from 0 to 2000 feet
in the U.S.A. and Canada.
When installing this appliance at an elevation above
2000 feet, it may be necessary to decrease the input rating by changing the existing burner orifi ce to a smaller
size. Input rate should be reduced by 4% for each 1000
feet above a 2000 foot elevation in the U.S.A., or 10% for
elevations between 2000 and 4500 feet in Canada. If the
heating value of the gas has been reduced, these rules
do not apply. To identify the proper orifi ce size, check
with the local gas utility.
If installing this appliance at an elevation above 4500 feet
(in Canada), check with local authorities.
WARNING
Do NOT use this appliance if any part has been under water.
Immediately call a qualifi ed service technician to inspect the
appliance and to replace any part of the control system and
any gas control which has been under water.
D. 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 750º C, shall be considered
non-combustible materials.
B. BTU Specifi cations
Models
(U.S. or Canada)
US
MTL-INSERT
(NG)
MTL-INSERT
(LP)
(0-2000 FT.)
CANADA
(2000-4500 FT.)
US
(0-2000 FT.)
CANADA
(2000-4500 FT.)
Maximum
Input
BTU/h
32,000 22,000 #35
28,800 19,800 #36
31,000 18,000 #52
27,900 16,220 #53
Minimum
Input
BTU/h
Heat & Glo • MTL-Insert • 2145-900 Rev. G • 6/094
Orifi ce
(DMS)
Size
E. Combustible Materials Specifi cation
Materials made of or surfaced with wood, compressed
paper, plant fi bers, plastics, or other material that can ig-
nite and burn, whether fl ame proofed or not, or whether
plastered or unplastered shall be considered combustible
materials.
F. 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.
2
2
Getting Started
A. Design and Installation Considerations
Heat & Glo 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.
CAUTION
Check building codes prior to installation.
• Installation MUST comply with local, regional, state and
national codes and regulations.
• Consult insurance carrier, local building, fi re offi cials or
authorities having jurisdiction about restrictions, installation
inspection, and permits.
Heat & Glo gas inserts are designed for recessed installations into solid fuel masonry or factory built non-combustible
fi replaces that have been installed in accordance with the
National, Provincial, State and local building codes.
Prior to installing the gas insert:
• Have the chimney and adjacent structure inspected
and cleaned by qualifi ed professionals. Hearth & Home
Technologies recommends that NFI or CSIA certifi ed
professionals, or technicians under the direction of certifi ed professionals, conduct a minimum of a NFPA 211
Level 2 inspection of the chimney.
• Replace component parts of the chimney and fi replace
as specifi ed by the professionals.
• Ensure all joints are properly engaged and the chimney
is properly secured.
When planning an appliance installation, it’s necessary to
determine the following information before installing:
• Minimum fi replace size. See Section 3.A.
• Gas supply piping.
• Electrical wiring.
• Finishing details.
• Existing mantel, mantel legs and wall projection locations. See Section 3.C.
• Whether optional accessories—devices such as a fan,
wall switch, or remote control—are desired.
C. Inspect Appliance and Components
WARNING
Inspect appliance and components for damage.
Damaged parts may impair safe operation.
• Do NOT install damaged components.
• Do NOT install incomplete components.
• Do NOT install substitute components.
Report damaged parts to dealer.
• Carefully remove the appliance and components from
the packaging.
• The vent system components, surrounds and fronts are
shipped in separate packages.
• The fi ber logs may be packaged separately and must
be fi eld installed.
• Report to your dealer any parts damaged in shipment,
particularly the condition of the glass.
• Read all of the instructions before starting the insta-
llation. Follow these instructions carefully during the
installation to ensure maximum safety and benefi t.
WARNING
Hearth & Home Technologies disclaims any
responsibility for, and the warranty will be voided
by, the following actions:
• Installation and use of any damaged appliance or vent
system component.
• 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
B. Tools and Supplies Needed
Before beginning the installation be sure that the following
tools and building supplies are available.
Pliers Hi temp caulking material
Hammer Flat blade screwdriver
Voltmeter Framing square
Gloves Variable speed drill
1/4 Hex drive Safety glasses
Manometer Phillips screwdriver
Tape measure Non-corrosive leak check solution
1/2 - 3/4 inch length, #6 or #8 Self-drilling screws
Keep appliance dry.
• Mold or rust may cause odors.
• Water may damage controls.
5Heat & Glo • MTL-Insert • 2145-900 Rev. G • 6/09
3
3
Fireplace Size Requirements
A. Minimum Fireplace Opening
Minimum fi replace opening requirements are shown in
Figure 5.1.
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.
• The fi rebrick (refractory), glass doors, screen rails, screen
mesh and log grates can be removed from a factory
built fi rebox in order to gain minimum gas insert opening
requirements.
• Any smoke shelves, shields and baffl es may be removed
from the factory built fi rebox if attached with mechanical
fasteners.
• The metal fl oor of the solid fuel fi rebox may be removed to
facilitate the installation of the insert. The appliance may
not be placed directly on the base of the outer wrap, a 1/4
inch airspace must be provided between the insert and
the fl oor of the outer wrap. Use the levelling legs to raise
the insert a minimum of 1/4 inch. The original fi replace
may never be returned to solid fuel in this condition.
The sidewalls and top structure of the fi rebox may not
be altered with the exception of removable baffl es and
dampers.
• Cutting of any sheet metal parts of the fi replace in which
the gas fi replace insert is to be installed is prohibited,
except the fl oor as tested for and as noted above.
NOTE: For actual appliance dimensions refer to Section 15.
B
C
TOP VIEW
A
Minimum Appliance Size
Location MTL-INSERT
Inches Millimeters
A Front Width 29-1/4 743
B Rear Width 20-1/4 515
C Depth 13-5/8 346
* Height 20-1/4 515
* NOTE: If exhaust collar on insert and fi replace damper do not line up, add 4
inches (102 mm) to minimum fi replace height for bends in vent pipe.
Figure 3.1 Fireplace Opening
Heat & Glo • MTL-Insert • 2145-900 Rev. G • 6/096
B. Clearances
Fire Risk.
Odor Risk.
• Clearance to combustible material under the
insert is 1/4 inch (0.6 cm).
• Use leveling legs to raise insert minimum
1/4 inch above combustible material or outer
wrap of factory built fi rebox.
Fire Risk.
• Locate and install appliance to all clearance
specifi cations in manual.
WARNING
WARNING
EXHAUST
VENT PIPE
INLET AIR
VENT PIPE
12 in. MAX.
MANTEL
15 in. MIN.
MEASUREMENTS FROM
TOP EDGE OF UNIT
Figure 3.2 Clearances to Mantels or other Combustibles
above Appliance
7Heat & Glo • MTL-Insert • 2145-900 Rev. G • 6/09
4
4
Termination Locations
A. Vent Termination Minimum Clearances
Figure 4.1 specifi es minimum vent heights for various
pitched roofs.
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
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
* 3 foot minimum in snow regions
Figure 4.1 Minimum height from roof to lowest discharge
opening
WARNING
Fire Risk.
Asphyxiation Risk.
• Terminations MUST meet minimum clearances.
• Exhaust gases are hot.
• Nearby vents may draw fumes into house.
Heat & Glo • MTL-Insert • 2145-900 Rev. G • 6/098
5
5
Vent Information and Diagrams
A. Vent Table Key
The abbreviations listed in this vent table key are used in
the vent diagrams.
Symbol Description
V
MIN
V
MAX
Minimum Vertical Run Length 14 ft.
Maximum Vertical Run Length 50 ft.
B. Horizontal Venting
Horizontal venting is NOT allowed.
C. Measuring Standards
Vertical measurements listed in the vent diagram (Figure
5.1) were made using the following standard:
• Vertical terminations are measured to top of chimney.
WARNING
Fire Hazard.
Explosion Risk.
Asphyxiation Risk.
Do NOT connect this gas appliance to a
chimney fl ue serving a separate solid fuel or
gas burning appliance.
• May impair safe operation of this appliance
or other appliances connected to the fl ue.
• Vent this appliance directly outside.
• Use separate vent system for this appliance.
CAUTION
ALL vent specifi cations MUST be followed.
• This product is tested and listed to these specifi cations.
• Appliance performance will suffer if specifi cations are not
followed.
TERMINATION CAP
ADAPTOR
EXHAUST VENT PIPE
INSULATION SEAL
MIN. = 14FT.
MAX. = 50FT.
Figure 5.1
INLET VENT AIR PIPE
9Heat & Glo • MTL-Insert • 2145-900 Rev. G • 6/09
6
6
Installation Preparation
Prepare the existing solid fuel masonry or factory built
non-combustible fi rebox for installation.
A. Flue Damper
Fully lock the solid fuel fi replace’s fl ue damper in the open
position, OR completely remove it.
B. Chimney
• Ensure chimney is constructed of non-combustible
materials.
• Ensure chimney is clean and in good working order.
• Ensure that all chimney cleanouts fi t properly to prevent
air leakage into chimney.
C. Gas Line
Note: If the factor y built fi replace has no gas acces s hole
provided, an acces s hole of 1 inch (25 mm) diameter o r
less may be drilled through the lower sides or bottom of the
fi rebox in a proper workmanship - like manner. This access
hole must be plugged with non-combustible insulation after
the gas supply line has been installed.
• Install gas line into fi rebox cavity.
• Check local codes and gas line sizing requirements
following NFPA54. See Section 8.
E. Fireplace Conversion Notice
Permanently attach the label with the following warning
to the inside lower back of the fi replace fi rebox into which
the insert is being installed. Silicone may be required to
properly secure the label.
WARNING
Fire Risk.
This fi replace has been converted for use with
a gas fi replace insert only and cannot be used
for burning wood or solid fuels unless all original
parts have been replaced, and the fi replace re-
approved by the authority having jurisdiction.
Prior to installing the gas insert:
• Have the chimney and adjacent structure inspected
and cleaned by qualifi ed professionals. Hearth & Home
Technologies recommends that NFI or CSIA certifi ed
professionals, or technicians under the direction of certifi ed professionals, conduct a minimum of a NFPA 211
Level 2 inspection of the chimney.
• Replace component parts of the chimney and fi replace
as specifi ed by the professionals.
• Ensure all joints are properly engaged and the chimney
is properly secured.
D. Hearth or Hearth Extension
WARNING
Fire Risk.
A hearth or hearth extension (if present) must
comply with either of the following:
• The solid fuel burning fi replace manufacturer’s
specifi cation.
• Local building codes required by authority
having jurisdiction.
• NFPA 211
F. Remote Control
The receiver for the remotes must be installed BETWEEN
the base pan of the insert and the fi rebox of the wood-
burning fi replace (see photo below).
EXISTING SIDE
REFRACTORY
REMOTE
RECEIVER
UNIT
EXISTING BOTTOM OF
FIREPLACE
Figure 6.1
Note: The MTL-INSERT does not ship standard with a junction
box. In order to use a remote control, a junction box must be
installed.
Heat & Glo • MTL-Insert • 2145-900 Rev. G • 6/0910
7
7
Installing Vent Pipe and Appliance
A. Venting Components
CAUTION
Sharp Edges
• Wear protective gloves and safety
glasses during installation.
The vertical vent termination system installed on this model
includes:
• One length of 3-inch fl exible vent pipe for combustion
air (included with vent kit). Pipe will be either a 4-foot
or 30-foot section depending on which kit is being used
in the application.
• Flexible vent pipe for exhaust air (included with vent kit).
• One pipe-to-cap adaptor (included with vent kit).
• One vertical termination cap (included with vent kit).
B. Connecting Vent Pipe
Reference instructions in the termination kit.
• Install the 3-inch fl exible vent pipe(s) down through the
chimney.
• Use three screws to secure the exhaust fl exible vent
pipe to the 3 foot section stainless steel fl exible vent pipe
using the factory-installed 3-inch collar in the stainless
steel section of pipe (see Figure 7.1).
• Use 3 screws to attach either a 4 foot or 30 foot section
of inlet air vent to the inlet collar on the collar slide plate
(see Figure 7.1). NOTE: The collar slide plate may be
removed from appliance to aid installation.
• Seal opening between fl ex vent and chimney just above
insert. Non-combustible, unfaced fi berglass insulation
may be used for this purpose.
EXHAUST
AIR
VENT PIPE
TERMINATION
CAP
INLET AIR STARTING COLLAR
LOCKING TAB
STARTING COLLAR BRACKET
EXHAUST STARTING COLLAR
INLET AIR
VENT PIPE
INLET AIR STARTING COLLAR
STARTING COLLAR BRACKET
Figure 7.1
EXHAUST STARTING COLLAR
11Heat & Glo • MTL-Insert • 2145-900 Rev. G • 6/09
CUT AND BEND
FLASHING AS NEEDED
TO FIT CHIMNEY
SEALANT
ADHESIVE
WARNING
Fire Risk.
Only an approved Hearth & Home Technologies
surround may be used to cover integral grills on
solid fuel burning fi replaces.
• No other components such as shrouds, sheetmetal plates, etc., may be used to seal off vents.
WARNING
Failure to position the parts in accordance with these diagrams
or failure to use only parts specifi cally approved with this
appliance may result in property damage or personal injury.
Figure 7.2
• T rim chimney top plate to minimize excess overhang or
bend over fl ue tile (see Figure 7.2).
• Place 3/8 inch bead of 300º F silicone on fl ue tile top.
C. Placing, Securing and Leveling the
Appliance
• Install insert (without surround attached) into existing
fi replace while pulling collar slide plate forward.
• Install gas line into hole provided on insert side.
• If applicable install remote control wires into insert side
(see Section 6F).
• Secure collar slide plate to appliance by placing locking
handle into position with locking tabs (see Figure 7.1)
and secure with #8 screw.
• Level the appliance from side to side and front to back. If
necessary , use the leveling legs included with the manual
bag to set each corner of the base.
• Position any excess fl exible vent pipe back up into
chimney without sagging. Twist and push flex vent
together to shorten.
• Non-combustible, unfaced fi berglass insulation may be
installed between the back of the decorative surround
and the face of the existing fi replace surround to which
the insert is being installed.
• Attach surround. Follow instructions accompanying
surround.
• Push insert so that surround becomes tight against face
of fi replace.
WARNING
Explosion Risk.
Combustion Fume Risk.
• Connect vent sections per installation instructions.
• Connect exhaust vent pipe ONL Y to exhaust starting collar
and termination cap center collar.
• Connect inlet air vent ONLY to inlet air collar on appliance
and either the termination cap inlet air collar OR terminate
within chimney.
• Do NOT allow vent to sag below connection point to
appliance.
Heat & Glo • MTL-Insert • 2145-900 Rev. G • 6/0912
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