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                        DONOT
DISCARD
Installation
 Instructions
 
Models:
Installation and service of this 
MHK18NG appliance should be performed by 
qualified personnel. Hearth & Home 
MHK24NG
Technologies suggests NFI certified 
STMHK18NG
or factory-trained professionals, or 
STMHK24NG
technicians super-
vised by an NFI 
Fireside Burner/Hearth Kits
certified profes-
For Natural Gas Use Only
sional.
Check with your local building code agency before you begin installation to ensure compliance with local codes, includi
                    
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                        Read this manual before installing or operating this appliance. Please retain this owner’s manual for future reference. Congratulations Congratulations on selecting a Hearth & Home Technolo- This owner’s manual should be retained for future reference.  gies gas log set—an elegant and clean alternative to burn- We suggest you keep it with your other important documents  ing wood. The Hearth & Home Technologies gas log set you and product manuals. have selected is designed to provide the utmost in
                    
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                        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 Com
                    
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                        Listing and Code Approvals  1  A. Appliance Certification WARNING The Gas Log Hearth Kits have been tested and listed in the  U.S. in accordance with ANSI Z21.84-2003 (Gas Log Set).  Improper installation, adjustment, alteration, service  They have been listed by OMNI Test Labs for installation and  or maintenance can cause injury or property damage.  operation in the United States and Canada as described in  Refer to the owner’s information manual provided with  these Installation and Operating
                    
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                        Getting Started  2  A. Size of Firebox CAUTION See Table 1 in Section 1.B. Sharp Edges B. Negative Pressure • Wear protective gloves  Negative pressure results from the imbalance of air avail- and safety glasses during  able for the fireplace to operate properly. Causes for this  installation. imbalance include: • Exhaust fans (kitchen, bath, etc.). • Range hoods. • Combustion air requirements for furnaces, water heaters  and other combustion appliances. • Clothes dryers. WARNING • Location of r
                    
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                        WARNING WARNING Inspect appliance and components for  Keep appliance dry. damage. Damaged parts may impair safe  • Mold or rust may cause  operation. odors. • Do NOT install damaged components. • Water may damage controls. • Do NOT install incomplete components. • Do NOT install substitute components. Report damaged parts to dealer. WARNING E. Components of the Gas Hearth Kit Do NOT use this appliance if any part has been under  The Burner/Hearth Kit consists of the following: water. Immediately
                    
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                        Appliance Preparation  3  Note: Have the gas supply line installed in accordance  WARNING with local building codes, if any. If not, follow ANSI 223.1.  Installation should be done by a qualified installer approved  Fire Risk and/or licensed as required by the locality. (In the Common- Explosion Risk wealth of Massachusetts installation must be performed by  Verify inlet pressures. a licensed plumber or gas fitter.) • High pressure may cause overfire  condition. • Low pressure may cause explosio
                    
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                        • Gas Supply Pressure: Minimum inlet gas supply pressure  C. Gas Pressure must be 3.5 in. W.C. for the purpose of input adjustment.  Proper input pressures are required for optimum appliance  Maximum inlet gas pressure must not exceed 10.0 in. W.C.  performance. Gas line sizing requirements need to be made  The gas line supplying the appliance must be sufficient  following NFPA51. size to furnish the appropriate supply pressure to the  appliance while operating in the “High” setting. (Minimum  l
                    
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                        Installation Instructions  4  A. Install the Damper Stop • Open the damper to the fully open position and secure it  open with the stop as shown in Figure 4.1. • If the damper stop doesn’t fit your application, use a  permanent means that will keep the damper open at  least to the minimum vent opening as outlined in Table 1,  Section 1.B. Figure 4.2 Center Grate Over Burner Pan D. Place Sand and Rockwool • Pour the sand into the burner pan. Sand should follow the  slope of pan, covering it and t
                    
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                        E. Install the Logs F. Adjust the Burner Flame • The burner flame can be adjusted at the manual shutoff  valve beside the fireplace to obtain the desired flame  WARNING appearance.  • The flame color will stabilize after ten minutes of  Fire Risk operation. Explosion Risk Personal Injury Risk G. Inspect the Venting System Failure to position the parts in accordance  The fireplace venting system is designed and constructed to  with the diagrams provided with the log  develop a positive flow adequ
                    
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                        Operating Instructions  5  A. Lighting Instructions FOR YOUR SAFETY READ BEFORE LIGHTING FOR YOUR SAFETY READ BEFORE LIGHTING WARNING! IF THESE INSTRUCTIONS ARE NOT FOLLOWED EXACTLY, A FIRE OR EXPLOSION MAY RESULT  CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR LOSS OF LIFE. A. This appliance has a manually lighted burner and must be lit by hand. When lighting the burner, follow these  instructions exactly. B. BEFORE LIGHTING smell all around the appliance area for gas. Be sure to smell next to the
                    
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                        • A qualified service technician must perform installation  B. Glass Doors and repair. The appliance should be inspected and cleaned  If your fireplace is equipped with glass doors: annually by a qualified service technician. More frequent  • Glass doors should be in fully open poisition when  cleaning may be required due to excessive lint, dust, pet  appliance is operating. hair, etc. It is imperative that the control compartments,  • Operating in the closed position will block the radiant heat
                    
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                        Maintaining and Servicing the Appliance  6  A. Servicing Your Appliance C. Annual Inspection WARNING WARNING Risk of injury or property damage Annual inspection by qualified technician  recommended. Before servicing: Check: • Turn off gas. • Condition of doors, surrounds and fronts. • Turn off electricity to appliance. • Obstructions of combustion and ventilation  • Disable remote control, if one is present. air. • Ensure appliance is completely cooled. • Condition of logs. After Servicing: • Co
                    
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                        Reference Materials  7  A. Replacement Parts Service Parts  Fireside HeartH Kits Exploded Parts Diagram Beginning Manufacturing Date:8/1/2010   MHK-NG Ending Manufacturing Date: Active 1 - MHK Burner Pan Assembly 2 - MHK Grate Assembly MHK Hearth Kit Assembly 7 5 8 3 6 4 14 Hearth & Home Technologies • Fireside Burner/Hearth Kits • 4004-304 Rev C • 08/2010                                                                                                                                              
                    
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                        Service Parts  Fireside HeartH Kits Service Parts List Beginning Manufacturing Date:8/1/2010   MHK -NG Ending Manufacturing Date: Active # Description of Part MHK18NG MHK24NG Qty.   1 Burner Pan Assy SRVAGLBP14 SRVAGLBP18 1   2 Grate Assy SRVAG16 SRVAG18 1   3 Orifice BPO-2-26 BPO-2-20 1   4 Connector Tube SRV3814NXN SRV3814NXN 1   5 Damper Stop Assy SRV500-SC SRV500-SC 1   6 Elbow, 3/8” MFL x 3/8” FPT Brass 01-1050 01-1050 1   7 Elbow, 3/8” Flare x 1/2” FIP Brass 10-1037 10-1037 1   8 Cap, 1/2”
                    
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                        Service Parts  Fireside HeartH Kits Exploded Parts Diagram Beginning Manufacturing Date:8/1/2010   STMHK-NG Ending Manufacturing Date: Active 1 - STMHK Burner Pan Assembly 2 - STMHK Grate 5 7 3 6 4 16 Hearth & Home Technologies • Fireside Burner/Hearth Kits • 4004-304 Rev C • 08/2010                                                                                                                                                                                                                        
                    
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                        Service Parts  Fireside HeartH Kits Service Parts List Beginning Manufacturing Date:8/1/2010   STMHK -NG Ending Manufacturing Date: Active # Description of Part STMHK18NG STMHK24NG Qty.   1 Burner Pan Assy SRVOBP18ST SRVOPB20ST 1   2 Grate Assy SRVAG16 SRVAG18 1   3 Orifice BPO-2-26 BPO-2-20 1   4 Connector Tube SRV3814NXN SRV3814NXN 1   5 Damper Stop Assy SRV500-SC SRV500-SC 1   6 Elbow, 3/8” MFL x 3/8” FPT Brass 01-1050 01-1050 1   7 Elbow, 3/8” Flare x 1/2” FIP Brass 10-1037 10-1037 1 Sand SR
                    
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                        18 Hearth & Home Technologies • Fireside Burner/Hearth Kits • 4004-304 Rev C • 08/2010                                                                                                                                                                                                                                                                                                                                                                                                                              
                    
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                        Hearth & Home Technologies • Fireside Burner/Hearth Kits • 4004-304 Rev C • 08/2010 19                                                                                                                                                                                                                                                                                                                                                                                                                              
                    
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                        DONOT DISCARD C. Contact Information   Please contact your Hearth & Home Technologies dealer with any questions or concerns. For the number of your nearest Hearth & Home Technologies dealer, please call 1-800-927-6841 or 1-888-427-3973. - NOTES - CAUTION DO NOT DISCARD THIS MANUAL • Read, understand • Leave this manual with  • Important operating  and follow these party responsible for  a n d m a i n t e n a n c e  instructions for safe use and operation. instructions included. i n s t a l l a t