Hearth and Home Technologies MHK24NG, MHK18NG, MTMHK18NG, STMHK24NG User Manual
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Installation
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Instructions
Models:
MHK18NG
MHK24NG
STMHK18NG
STMHK24NG
Fireside Burner/Hearth Kits
For Natural Gas Use Only
Check with your local building code agency before you begin installation to ensure compliance with local codes, including
the need for permits and follow-up inspections. If you encounter any problems regarding code approvals, or if you need
clarification of any of the instructions contained here, contact the Technical Services Dept., Hearth & Home Technologies
Inc., phone 1-888-427-3973 or 1-800-927-6841.
Installation and service of this
appliance should be performed by
qualified personnel. Hearth & Home
Technologies suggests NFI certified
or factory-trained professionals, or
technicians supervised by an NF I
cer t if i ed pr o fe s sional.
CAUTION
DO NOT DISCARD THIS MANUAL
•
• Im porta nt operating
a n d m a i n t e n a n c e
instructions included.
•
Rea d , understa n d
an d fo ll ow th es e
instructions for safe
i ns ta ll at io n a n d
operation.
Leave this manual with
party responsible for
use and operation.
WARNING
If the information in these instructions is not followed exactly, a
fire may result causing property
damage, personal injury, or death.
• Do not store or use gasoline or other flammable vapors and liquids in the vicinity of
this or any other appliance.
• What to do if you smell gas:
- Do not try to light any appliance.
- Do not touch any electrical switch. Do not
use any phone in your building.
- Immediately call your gas supplier from
a neighbor’s phone. Follow the gas
supplier’s instructions.
- If you cannot reach your gas supplier, call
the fire department.
• Installation and service must be performed
by a qualified installer, service agency, or
the gas supplier.
Note: An arrow () found in the text signifies change in
content.
Hearth & Home Technologies • Fireside Burner/Hearth Kits • 4004-304 Rev C • 08/2010
WARNING
HOT! DO NOT TOUCH.
SEVERE BURNS MAY RESULT.
CLOTHING IGNITION MAY RESULT.
Glass and other surfaces are hot during
operation and cool down.
• Keep children away.
• CAREFULLY SUPERVISE children in same room as
appliance.
• Alert chil d r e n and adult s to haza r d s of hi gh
temperatures.
• Keep cl o t h i n g , fu r n i t u r e , dr a p e r i es an d other
combustibles away.
In the Commonwealth of Massachusetts:
• This appliance must be installed by a licensed plumber
or gas fitter.
• The chimney flue damper, when used with gas logs, will
be welded open or completely removed.
• A CO detector shall be installed in the room where the
appliance is installed.
1
Read this manual before installing or operating this appliance.
Homeowner Reference Information
Model Name: Date purchased/installed:
Serial Number: Location on appliance:
Dealership purchased from: Dealer phone:
Notes:
We recommend that you record the following pertinent
information about your gas log set:
Please retain this owner’s manual for future reference.
Congratulations
Congratulations on selecting a Hearth & Home Technologies gas log set—an elegant and clean alternative to burning wood. The Hearth & Home Technologies gas log set you
have selected is designed to provide the utmost in safety,
reliability, and efficiency.
As the owner of this new gas log set, 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.
This owner’s manual should be retained for future reference.
We suggest 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 gas log set will give you years of durable use and
trouble-free enjoyment. Welcome to the Hearth & Home
Technologies family of appliance products!
Listing Label Information/Location
The model information regarding your specific gas log set can be found on the rating plate.
MODEL NUMBER
Hearth & Home Technologies
Decorative Gas Logs
Complies with LARGA2-72
Manufacturer: Hearth & Home Technologies
NOTE: TO BE USED IN A WOOD-BURNING FIREPLACE
ONLY. KEEP DAMPER WIDE OPEN WHEN IN USE.
FOR YOUR SAFETY
Do not store or use gasoine or other flammable vapors and liquids
in the vicinity of this or any other appliance.
MODEL NUMBER
SERIAL NUMBER
INPUT RATING
GAS TYPE
MANIFOLD PRESSURE
Angier, NC 27501
SERIAL #
GAS TYPE
2
Hearth & Home Technologies • Fireside Burner/Hearth Kits • 4004-304 Rev C • 08/2010
Table of Contents
1 Listing and Code Approvals
A. Appliance Certification . . . . . . . . . . . . . . . . . . . . . . . . . 4
B. Table 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 Getting Started
A. Size of Firebox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
B. Negative Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
C. Tools and Supplies Needed . . . . . . . . . . . . . . . . . . . . . 5
D. Inspect the Appliance and Components . . . . . . . . . . . 5
E. Components of the Gas Hearth Kit . . . . . . . . . . . . . . . 6
3 Appliance Preparation
A. Gas Supply Connection . . . . . . . . . . . . . . . . . . . . . . . . 7
B. Convert to Left Side Gas Piping. . . . . . . . . . . . . . . . . . 7
C. Gas Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4 Installation Instructions
A. Install the Damper Stop . . . . . . . . . . . . . . . . . . . . . . . .9
B. Install the Burner/Pan Assembly . . . . . . . . . . . . . . . . . 9
C. Install the Grate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
D. Place Sand and Rockwool . . . . . . . . . . . . . . . . . . . . . . 9
E. Install the Logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
F. Adjust the Burner Flame . . . . . . . . . . . . . . . . . . . . . .10
G. Inspect the Venting System . . . . . . . . . . . . . . . . . . . . 10
5 Operating Instructions
A. Lighting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . 11
B. Glass Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
C. Important Safeguards . . . . . . . . . . . . . . . . . . . . . . . . 12
6 Maintaining and Servicing the Appliance
A. Servicing Your Appliance . . . . . . . . . . . . . . . . . . . . . . 13
B. Cleaning Your Appliance . . . . . . . . . . . . . . . . . . . . . .13
C. Annual Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
D. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
7 Reference Materials
A. Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . 14-17
B. Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-19
C. Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Hearth & Home Technologies • Fireside Burner/Hearth Kits • 4004-304 Rev C • 08/2010
3
Listing and Code Approvals
1
A. Appliance Certification
The Gas Log Hearth Kits have been tested and listed in the
U.S. in accordance with ANSI Z21.84-2003 (Gas Log Set).
They have been listed by OMNI Test Labs for installation and
operation in the United States and Canada as described in
these Installation and Operating Instructions. All components
are UL, OMNI or CSA safety certified.
Check with your local building code agency prior to installing
this appliance to ensure compliance with local codes,
including the need for permits and follow-up inspections. In
the absence of local codes, comply with the National Fuel
Gas Code, ANSI Z223.1-Latest Edition in the U.S. If any
assistance is required during installation, please contact
your local dealer or call the Technical Services Department
at 1-888-427-3973 or 1-800-927-6841.
B. Table 1
WARNING
Improper installation, adjustment, alteration, service
or maintenance can cause injury or property damage.
Refer to the owner’s information manual provided with
this appliance. For assistance or additional information
consult a qualified installer, service agency or the gas
supplier.
WARNING
Fire Risk
Exhaust Fumes Risk
• Do NOT use this appliance as a “vent-free
heater.
The flue must be permanently open. Refer
to Table 1.
Product MHK18NG MHK24NG STMHK18NG STMHK24NG
Inlet BTU / KW /HR Nat. 74,000 / 21.7 84,000 / 24.6 65,000 / 19 75,000 / 22
Max. Inlet Pressure
IN. WC / KPa
Min. Inlet Pressure IN.
WC / KPa
Orifice Size
In. / mm
Minimum Fireplace
Opening Size
In. / cm
Min. Vent Opening in
Square In. / cm
Nat. 10.0 / .052 10 / .052 10.0 / .052 10.0 / .052
Nat. 3.5 / .018 3.5 / .018 3.5 / .018 3.5 / .018
Nat. (#26) .147 (#20) .161 (#30) .128 (#28) .141
Front 28 / 71.1 34 / 86.4 28 / 71.1 34 / 86.4
Rear 16 / 40.6 18 / 45.7 - -
Depth 14 / 35.6 16 / 40.6 16 / 40.6 16 / 40.6
Height 16 / 40.6 18 / 45.7 18 / 45.7 18 / 45.7
39 / 251.6 48 / 309.7 39 / 251.6 48 / 309.7
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Hearth & Home Technologies • Fireside Burner/Hearth Kits • 4004-304 Rev C • 08/2010
Getting Started
2
A. Size of Firebox
See Table 1 in Section 1.B.
CAUTION
B. Negative Pressure
Negative pressure results from the imbalance of air available for the fireplace to operate properly. Causes for this
imbalance include:
• Exhaust fans (kitchen, bath, etc.).
• Range hoods.
• Combustion air requirements for furnaces, water heaters
and other combustion appliances.
• Clothes dryers.
• Loc a ti on of re tu r n- a ir ve nt s to fu rn a ce or ai r
conditioning.
• Imbalances of the HVAC air handling system.
• Upper level air leaks: recessed lighting, attic hatch
opening, duct leaks.
C. Tools and Supplies Needed
Tools and supplies normally required for installation:
Pliers
Phillips screwdriver
Tape measure
Crescent wrenches
Gas shutoff valve
Non-corrosive leak check solution
3/4 in. wrench, 7/16 in. wrench
Sharp Edges
• Wear protective gloves
and safety glasses during
installation.
WARNING
Asphyxiation Risk
This appliance produces carbon monoxide
(CO).
• The free opening areas (in square inches)
of the chimney damper as shown in the
tables must be met.
• User must make sure damper is locked
open.
• The installer is responsible to ensure
proper ventilation of flue gases before
appliance is used.
Fire needs to draft properly fo r sa f e
operation.
D. Inspect the Appliance and Components
• Remove the contents from the carton. Attached to the
burner are tags identifying the manufacturer name, serial
number, model number (including gas log size), BTU
ratings, gas type, etc.
• Review the attached tags before proceeding. Ensure
that all minimum fireplace dimension requirements are
achieved using Table 1 in Section 1.B. See Figure 2.1.
Ensure the gas type provided in the fireplace coincide
with the gas type marked on the tag.
Figure 2.1 Measure Firebox
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.
• Modification 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 fire hazard.
Hearth & Home Technologies • Fireside Burner/Hearth Kits • 4004-304 Rev C • 08/2010
5
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.
E. Components of the Gas Hearth Kit
The Burner/Hearth Kit consists of the following:
• Burner/Pan Assembly
• Grate Assembly
• Glowing Embers
• Sand
• Lava Rock
• Damper Stop
• Aluminum Tubing Assembly
• Brass Elbow Connector
• Brass Orifice & Cap
• Log Set (sold separately)
WARNING
Keep appliance dry.
• Mold or r u s t may cau s e
odors.
• Water may damage controls.
WARNING
Do NOT use this appliance if any part has been under
water. Immediately call a qualified service technician
to inspect the appliance and to replace any part of the
control system and any gas control which has been
under water.
WARNING
Shock Risk
Fire Risk
Use ONLY optional accessories approved
for this appliance.
• Using non-listed accessories voids
warranty.
• Using non-listed accessories may result
in a safety hazard.
• Only Hearth & Home Technologies
approved accessories may be used
safely.
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Hearth & Home Technologies • Fireside Burner/Hearth Kits • 4004-304 Rev C • 08/2010
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