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85-03-01145 

ML54 

Page 

13

 

4.2

 

MECHANICAL TECHNICAL REFERENCES 

 

Planning the installation 

This Mendota Fireplace must be installed and serviced by a qualified installer, service agency, or the gas supplier. 

When planning on appliance installation, it is necessary to determine the following information before installing: 

 

Where the appliance is to be installed. 

 

The vent system configuration to be used. 

 

Gas supply piping. 

 

Electrical Wiring. 

 

Framing and finishing details. 

 

Hearth Protection Pad Requirements. 

 

Whether accessories such as a ceiling fan are desired.

 

 

Selecting Appliance Location 

When selecting a location for your appliance, it is important to consider the required clearances to walls. 
 

 

Figure 4-1 FIREPLACE LOCATION 

 

WARNING 

FIRE RISK- ODOR RISK 

 

Install appliance on hard metal or wood surfaces extending full width and depth of this fireplace. 

 

Do NOT install this fireplace directly on carpeting, vinyl or any combustible material other than wood. 
Construct chase to all clearance specifications in manual. 

 

Locate and install appliance to all clearance specifications in manual. 

Summary of Contents for ML54

Page 1: ...S SENTEZ UNE ODEUR DE GAZ Ne pas tenter d allumer d appareil Ne touchez aucun interrupteur Ne pas vous servir des t l phones se trouvant dans le b timent o vous trouvez Appelez imm diatement votre fou...

Page 2: ...85 03 01145 ML54 HOMEOWNER NOTES...

Page 3: ...ompleted all smoking will have stopped Some slight odors may remain With subsequent use of this Fireplace odors will slowly dissipate and disappear ODOR RISKS If this appliance is not operated for an...

Page 4: ...ved for Use 29 4 2 13 4 2 Sealants Type Approved for Use 29 4 2 13 4 3 Wood Application Cautions 29 4 2 16 3 1 Mendota Cool Wall34 4 2 16 3 2 Versiheat 35 4 2 16 3 3 FlexHeat 36 4 3 ELECTRICAL TECHNIC...

Page 5: ...OM CELSIUS TO FAHRENHEIT 76 6 7 IPI AND CPI MODES 77 6 8 FIRST TIME LIGHTING INSTRUCTIONS 77 6 9 OPERATING INSTRUCTIONS 78 6 10 TO TURN OFF GAS TO FIREPLACE 78 6 11 FREQUENTLY ASKED QUESTIONS 79 7 1 R...

Page 6: ...es for details on installation requirements The Mendota Fireplace must be vented to the outside in accordance with the latest edition of the National Fuel Gas Code In the absence of local codes the in...

Page 7: ...fireplaces are heat producing appliances Do not burn wood paper or other materials in this fireplace This fireplace is designed as a supplemental heat source It is advisable to have an alternative pr...

Page 8: ...all obstacles and materials for servicing and proper operation Use only Mendota approved Screens Fronts and Trim Kits Due to high temperature the fireplace should be located out of traffic areas and a...

Page 9: ...heater is not for use with air filters Foyer au gaz vacuation Ne pas utiliser avec du combustible solide Keep burner and control compartment clean See installation and operating instructions accompany...

Page 10: ...Building Code 3 A metal or plastic identification plate shall be permanently mounted to the exterior of the building at a minimum height of eight 8 feet above grade directly in line with the exhaust v...

Page 11: ...n openings in the fireplace Always use Mendota decorative fronts and Mendota approved vent systems and vent caps only Mendota Fireplace Curing Instructions ATTENTION It is important that the blowers a...

Page 12: ...onts doors facing materials and their application Finish materials around the fireplace are subject to high temperatures Finishing materials used over the fireplace in the non combustible zone can see...

Page 13: ...ng and finishing details Hearth Protection Pad Requirements Whether accessories such as a ceiling fan are desired Selecting Appliance Location When selecting a location for your appliance it is import...

Page 14: ...03 01145 ML54 Page 14 Listing Label The listing label is located under the firebox Remove the center access grill and locate the listing plate It is chained to the firebox s leg Figure 4 2 Listing Lab...

Page 15: ...dy as required per code to inform you of important facts You can find these labels on the right side outer surface of this appliance Make certain you heed all the warning and caution statements during...

Page 16: ...85 03 01145 ML54 Page 16 Figure 4 11 Figure 4 10...

Page 17: ...ANCES TO COMBUSTIBLE CONSTRUCTION UNIT TO FLOOR 0in 0mm UNIT SIDE TO ADJACENT SIDEWALL 18in 457 mm UNIT TO ENCLOSURE SIDEWALL 1 2in 13mm VENT PIPE TOP TO COMBUSTIBLES 3in 76mm UNIT TO ENCLOSURE BACK W...

Page 18: ...are used this appliance will perform safely Note that the exposed surfaces immediately surrounding the Fireplace can have surface temperatures that are too hot to touch This level of surface temperat...

Page 19: ...tion The distance from floor level to the centerline of the vent cap is based on Simpson DuraVent GS components If using vent components of another brand do not assume that the measurement given here...

Page 20: ...igure 4 14 FIREPLACE DIMENSIONS AND FEATURES Convection Blower System Dual blowers are provided as standard equipment with this ML54 Fireplace The dual blowers have an air output rating of 190 CFM in...

Page 21: ...transport this Fireplace Note Team lifting is recommended To use the lifting handles slide hands into the opening of the lifting handle grip top U shaped section tightly and lift Once this Fireplace i...

Page 22: ...e is to be recessed in a cavity deeper than 19 1 2 all framing and finishing materials protruding past the front face of this fireplace must be of the NON COMBUSTIBLE variety Minimum Required Dimensio...

Page 23: ...building envelope in any manner Wall ceiling base plate and cantilever floor of the chase should be insulated Vapor and air infiltration barriers should be installed in the chase as per regional codes...

Page 24: ...85 03 01145 ML54 Page 24 Clearance from Appliance Side Walls Figure 4 18 CLEARANCE TO BODY...

Page 25: ...or ceramic standoffs or spacers between the metal shield and the combustible surface being protected The bottom and top edges of the cavity between the metal shield and the combustible surface must b...

Page 26: ...re to proper clearances required to combustibles may cause spontaneous combustion of the mantel and may result in a fire causing property damage personal injury or loss of life NOTE For mantels that p...

Page 27: ...and granite tiles contain epoxy resin coatings The polyester resin coatings and the epoxy resin coatings provide structural strength to the stone slabs and prevent cracking chipping and breakage duri...

Page 28: ...roper adhesives be used to attach stone facings Pay attention to the potential of off gassing of chemical vapors from mastic and other adhesives Improper selection can lead to emission of chemicals wi...

Page 29: ...or bubbling of the paint or sealant Moisture content of the wood substrate is also of critical importance High moisture content wood when heated will yield evaporation of the moisture and hydraulic pr...

Page 30: ...ep If your finish material is rough or lightly colored and extends past 1 you may be able to see the material behind the screen at certain angles After the fireplace is installed and the finishing mat...

Page 31: ...cking materials and reasonably flat If they are not use Option 3 Use the reference chart or pricing to ensure you have the necessary guides templates Option 3 Installing Front Flush Or Recessed Into W...

Page 32: ...mum operation temperatures Mendota Hearth will not be held liable for any adverse effects on a television or other products located near to a Mendota Hearth fireplace The drawings below show recommend...

Page 33: ...the fireplace and redirect it to another area When used correctly these heat transfer systems can make it possible to mount a television above the fireplace without installing a mantel or creating a r...

Page 34: ...key Release the MODE key Press the MODE key once to highlight the convection fan function 4 While still holding the ON OFF key press the DOWN ARROW key The display will change from Set to Clr to indic...

Page 35: ...r mounting a television the Versiheat system must always be on when the fireplace is in operation Because the Versiheat system must be running to reduce temperatures the fireplace cannot be operated d...

Page 36: ...the fireplace for mounting a television the FlexHeat system must always be on when the fireplace is in operation Because the FLexHeat system must be running to reduce temperatures the fireplace cannot...

Page 37: ...for protection 2 Exercise extreme caution when using ladders or on rooftops and 3 be aware of electrical wiring locations in walls and ceilings This gas appliance and vent system must be vented direc...

Page 38: ...ents and venting restrictions ITEM DESCRIPTION 1 6 or 7 PIPE DuraVent 6 Amerivent 7 9 12 2 12 VENT STACK 3 24 VENT STACK 4 36 VENT STACK 5 48 VENT STACK 6 90 GALVANIZED ELBOW 6a 45 GALVANIZED ELBOW 7...

Page 39: ...PPROVED APPROVED NOT ALLOWED APPROVED H2 V H2 H2 V2 V1 V2 V V H1 H1 H1 H STRAIGHT UP VERTICAL VENTING THREE HORIZONTAL DISCHARGE 90 ELBOWS VERTICAL RISE TRIPLE 90 ELBOWS VERTICAL TERMINATION VERTICAL...

Page 40: ...s 45 cm recommended to prevent condensation on window J Clearance to non mechanical air supply inlet to building or the combustion air inlet to any other appliance 12 inches 30 cm minimum D Vertical c...

Page 41: ...liances are terminated next to each other the minimum required distance between the vertical center line of the vent caps is 18 to prevent recirculation of exhaust from one vent cap outlet into the ai...

Page 42: ...ve cover on sides all of the vent cap 3 Fresh air openings shall be provided at a level equal to or below the fresh air openings in the vent cap The fresh air openings shall provide a minimum open are...

Page 43: ...plate secured with four screws route the 3 wire end of an extension cord or house power wire cable through the strain reliefs in the cover plate 2 Locate in the manual packet the plug shown in the ph...

Page 44: ...plates are supplied and are White and Beige in color If the home d cor requires a different color other than the two supplied colors obtain one from a local hardware store Make certain that the cover...

Page 45: ...lacement wires must have the same type and size of insulation as the original This appliance must be electrically connected and grounded in accordance with local codes or in the absence of local codes...

Page 46: ...E THE POSSIBILITY OF CONTAMINANTS ENTERING THE GAS TRAIN ADHERE STRICTLY TO LOCAL AND NATIONAL CODES Gas Supply Line Sizing This Mendota Gas Fireplace comes equipped with a 1 2 N P T Female inlet Gas...

Page 47: ...s supply piping system by closing its equipment shut off valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 1 2 psi 3 5 kPa Drip Leg Requirement...

Page 48: ...d 90 degrees or until it stops Figure 4 35 EMERGENCY GAS SHUTOFF Gas Inlet Fittings Information Caution Before you run the gas line read understand and properly calculate the required gas line size Im...

Page 49: ...e body has the orifice hole size stamped on it LPG orifice size shall be 49 0 2000ft and for 2000 5000ft Verify that the manifold gas pressure is within 10 0 WC 1 8 High Altitude De Rating If you are...

Page 50: ...proved serviceperson in accordance with instructions All joints are secured twist locked and leak proof Horizontal or vertical vent cap is installed right side up and tightly sealed to structure per i...

Page 51: ...Fireplace To remove the outer box identify and remove four Philips head drywall screws that secure a cardboard L pincher at the bottom of each corner of the box Lift the outer box vertically straight...

Page 52: ...replace Light Lens Assembly Packet HA 88 00167 Light Lens Lens Retainer Bracket w gasket four 10 24 Nuts Lens base gasket Installation Required Owner s Manual Must Leave with Homeowner This Manual Fig...

Page 53: ...removing them will be necessary for Fireplace units which are to be installed in narrow width or shallow depth openings To bend the clips up or to break them off follow these procedures 1 Fireplace th...

Page 54: ...angle and move away from unit Door is now free from unit NOTE Always check glass gasket condition and gasket seal any time the glass door is removed and when reinstalling glass door 5 8 TO REPLACE DOO...

Page 55: ...ndle the light bulb Touching the light bulb will leave oils and dirt on the lens and will cause premature failure of the light bulb 3 Use a 3 8 hex hand driver to loosen the nuts 4 Remove the lens ret...

Page 56: ...factory ready to burn natural gas If you intend to burn LP gas it is highly recommended that you convert this fireplace and its pressure regulator pilot natural gas LP clip position and burner orific...

Page 57: ...will then be free and can be removed from the fireplace 4 You will now be able to access the burner orifice which is located inside the air shutter box Using a deep well socket wrench remove the orif...

Page 58: ...he pilot is set to burn natural gas Push the clip in so that NAT is not visible 3 Tighten down hex shaped base of pilot using a 7 16 open end wrench 4 After the pilot is converted reinstall the burner...

Page 59: ...rovided screws F M4 x 0 7 threaded length of thread L 16mm 0 0 5mm steel material resistance class 8 8 Figure 3 12 5 4 Manually thread the two conversion kit mounting screws into the valve body Use a...

Page 60: ...system must be leak proof WARNING Do not proceed with operation of this fireplace unless burner cycles on off without delays Pilot Flame and Burner Relationship Verification Prior to completing the LP...

Page 61: ...The Mendota Fireplaces must be vented to the outside in accordance with the latest edition of the National Fuel Gas Code In the absence of local codes the installation must conform with National Fuel...

Page 62: ...ows may be installed anywhere within the 32 horizontal run If the starter vertical section is less than 4 use the chart and reduce 3 for every 90 elbow installed after the first 90 elbow For all verti...

Page 63: ...is already calculated into the allowable maximum horizontal run The Venting Requirements Chart assumes that for all horizontal runs calculated one 900 elbow is used within the venting system Note Each...

Page 64: ...le must be positioned so the vent system will run level or have a rise per foot of run AND be perpendicular to the wall The height of the opening must be located to meet all local and national buildin...

Page 65: ...overlap we suggest pre assembling and measuring the total vent pipe run so you can more accurately locate the point where the vent pipe will penetrate the outside wall Be sure all vent components are...

Page 66: ...4 Page 66 V 2 MIN H1 H2 MAX 2 9 11 3 19 6 4 32 4 12 32 For V greater than 12 see Master Venting Chart Vertical Rise Three 90 Elbows Horizontal Termination Use the Master Venting Chart to calculate all...

Page 67: ...nts are sealed and are leak proof Maintain 1 airspace clearances to combustibles 2 above horizontal runs Cut a 10 x 10 opening in the roof centered in the small drilled hole placed in the roof in No 1...

Page 68: ...me and effort in the design of this fireplace and its venting system Through this effort Mendota has been able to certify the use of Four 900 elbows The use of Four 900 elbows must meet some minimum p...

Page 69: ...characteristics after 20 minutes of burn time If the flames ghost off burners or if sooting occurs in LPG units open the vent damper FULLY and work backwards in increments to determine the correct da...

Page 70: ...ghting and log installation instructions Make certain that pilot flame and burner light correctly Gas leaks and gas pressures prior to installing facing materials is checked Fresh batteries are in rem...

Page 71: ...insert the glass latch tool tip in the ring terminal s ring hole Push the cable to close the air shutter or pull on the cable to open the air shutter 1 If flame is too blue close air shutter in small...

Page 72: ...room In addition to offering the most realistic log details textures coloration and the most realistic wood fire options Mendota also offers a large array of internal firebox lining options and extern...

Page 73: ...en the master switch is in the on condition the main burners will function as designed In case of an emergency toggle the master switch to off to turn off the main burners To synchronize the fireplace...

Page 74: ...r if the remote control is moved to another room or if the remote batteries are very weak b Normal Thermostat On In this mode the fireplace will turn itself on and off depending on the temperature you...

Page 75: ...g Smart Thermostat a If the thermostat icon displays as OFF Manual the fireplace will ignite and start on Hi b If the thermostat icon displays as ON Normal Thermostat the fireplace will only ignite if...

Page 76: ...peed can be adjusted through six speeds and off To activate this function press the Mode button until it displays the fan icon Use the up down arrow button to turn on off or adjust the fan speed Once...

Page 77: ...updraft during burner ignition and it will also eliminate excessive condensation of exhaust vapors on the door glass Leaving the fireplace in CPI mode will keep the fireplace body warm and eliminate...

Page 78: ...to light the system will lockout Press ON OFF button on remote control to Turn Off the system and reset the lockout Allow five minutes for any gas in the unit to dissipate before attempting to re ligh...

Page 79: ...I find the model and serial numbers When requesting service you will be asked to provide the model number and serial number to your Mendota dealer This information will expedite the warranty verifica...

Page 80: ...y wiring under the burner for melting or damage 2 Clean pilot light flame sensor rod and sparker rod using emery cloth Vacuum clean pilot light assembly 3 Visual check of pilot flames is required Pilo...

Page 81: ...nder warranty What should I do if my fireplace is sooting Sooting is caused by improper installation or air shutter operation However some small areas of soot deposits on log surfaces are deemed accep...

Page 82: ...n 4 If you see set the thermostat button is now enabled 5 If you see clear the thermostat button is disabled 6 Repeat this procedure if you did not see set or clear to add remove the thermostat option...

Page 83: ...glass should be cleaned periodically Exterior glass surface may be cleaned with cleaner as desired To clean Interior glass surface remove glass frame assembly See 5 7 To Remove Door Use Kel Kem polis...

Page 84: ...d calculation of proper main burner orifice sizes prior to first firing It is known that unpurified Natural Gas from backyard wells can contain high energy levels causing over firing Further unpurifie...

Page 85: ...the left to remove the burner tube from the shutter box Detailed instructions for removing the burner can be found in the converting to LPG section of this manual Gas Valve The main gas valve is loca...

Page 86: ...nts from the air box Then unscrew the airbox and lift it out of the fireplace Next remove the explosion plate panels The blowers are located under these panels towards the rear of the fireplace The bl...

Page 87: ...gure 7 3 ML54 BLOWER ASSEMBLIES Accent Light Parts Figure 7 4 Accent Light Assembly HA 77 00357 HA 88 00168 HA 58 04606 10 11 00020 10 11 00025 LIGHT COVER CLIP LENS RETAINER BRACKET WITH GASKET ACCEN...

Page 88: ...85 03 01145 ML54 Page 88 Gas Train Assembly Parts Figure 7 5 Gas Train Assembly Parts HA 115 00064 BURNER PAN ML60 HA 115 00071 55 02 00096 55 02 00114...

Page 89: ...ive on the gasket should contact the glass surface Use tracer lines in gasket to determine where the glass should sit on the gasket surface 4 Place glass and gasket assembly in glass frame and careful...

Page 90: ...ner flames are stable and are not lifting off burner Inform owner that an initial curing step is required Read and follow Mendota Fireplace and Insert Curing Instructions found on unit and in owner s...

Page 91: ...l breakage only STD Stainless Steel Burner Tubes Ceramic Burners STD All Castings EXT STD Valve Assembly and all gas control components Pilot Assembly Flame Sensor Spark Electrode Pilot Tubing Orifice...

Page 92: ...to be defective prior to processing or authorizing of any claim Failure to allow this upon request will void the warranty All warranty claims must be submitted by the dealer servicing the claim includ...

Page 93: ...vered under the terms of this warranty 14 Freight damages for products or parts are not covered under the terms of the warranty 15 Products made or provided by other manufacturers and used in conjunct...

Page 94: ...ister with Mendota to qualify for the Lifetime Limited Warranty within 30 days Product registration will activate your Lifetime Limited Warranty Owners should complete the forms available at mendotahe...

Page 95: ......

Page 96: ...Johnson Gas Appliance Company 520 E Avenue NW Cedar Rapids Iowa 52405 Mendota Warranty Registration...

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