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GAS SUPPLY REQUIREMENTS 

CORRECT GAS PRESSURE AND PROPER GAS SUPPLY LINE SIZING IS IMPERATIVE TO THE SUCCESSFUL PERFORMANCE OF YOUR MENDOTA 
GAS FIREPLACE.  BE SURE THE GAS SUPPLIER OR PLUMBER CAREFULLY CHECKS FOR CORRECT GAS PRESSURE AND GAS LINE SIZING WHEN 
INSTALLING THE FIREPLACE. 

IT IS CRITICAL TO CAREFULLY CHECK FOR GAS LEAKS WHEN HOOKING UP THE FIREPLACE -- CHECK WITH SOAP & WATER SOLUTION. 

BE SURE TO INSTALL "APPROVED" FLEX GAS LINE WITH BRASS-TO-BRASS FITTINGS TO PREVENT GAS LEAKS AT CONNECTIONS. 

GAS SUPPLY PIPING MUST INCLUDE A DRIP LEG TO ELIMINATE THE POSSIBILITY OF CONTAMINANTS ENTERING THE GAS TRAIN.   
ADHERE STRICTLY TO LOCAL AND NATIONAL CODES FOR ENTIRE INSTALLATION. 

 

GAS SUPPLY LINE SIZING

 

Gas supply piping can enter the Fireplace cabinet from either the left or right side. 

Install an approved individual shut-off valve in supply line to the fireplace.  The appliance and its individual 
shut-off valve must be disconnected from the gas supply piping system during any pressure testing of that sytem 
at test pressures in excess of 1/2 PSIG (3.5 kPa). 

The appliance must be isolated from the gas supply piping system by closing its individual manual shut-off 
valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 1/2 PSIG 
(3.5 kPa). 

The proper gas line diameter must be selected to run from the supply regulator to the Fireplace. Refer to the fol-
lowing table for proper gas pipe diameters.  Strictly adhere to the correct pipe sizes. 

 

PIPE LENGTH 

(FEET) 

SCHEDULE 40 PIPE 

INSIDE DIA. 

TUBING, TYPE L 

OUTSIDE DIA. 

 NAT. 

L.P. 

NAT. 

L.P. 

0-10 

1/2"   (1.3 cm) 

3/8"   (1.0 cm) 

1/2"   (1.3 cm) 

3/8"   (1.0 cm) 

10-40 

1/2"   (1.3 cm) 

1/2"   (1.3 cm) 

5/8"   (1.6 cm) 

1/2"   (1.3 cm) 

40-100 

1/2"   (1.3 cm) 

1/2"   (1.3 cm) 

3/4"   (2.0 cm) 

1/2"   (1.3 cm) 

100-150 

3/4"   (2.0 cm) 

1/2"   (1.3 cm) 

7/8"   (2.3 cm) 

5/8"   (1.6 cm) 

150-200 

3/4"   (2.0 cm) 

1/2"   (1.3 cm) 

7/8"   (2.3 cm) 

3/4"   (2.0 cm) 

NOTE:

  

Some areas allow copper tubing or galvanized pipe - check with local approval agencies and codes NEVER use plastic pipe.

 

 
 

GAS PRESSURE CHECKING REQUIREMENTS 

Inlet and manifold gas pressure checking taps are located on gas valve. (See 

FIGURE 2

  pg. 7)  A qualified instal-

ler should use these fittings for setting the correct gas pressure during initial installation. 
 

NOTE: 

DO NOT DAMAGE OR KINK THE FLEX CONNECTOR.  CHECK FOR GAS LEAKS  

 

WITH SOAP AND WATER SOLUTION. 

NOTE: 

3/8" FLEX OR RIGID PIPING MAY BE USED TO CONNECT GAS SUPPLY TO UNIT 
DEPENDING ON STATE AND LOCAL CODES. 

NOTE:    BE SURE TO INSTALL FLEX GAS HOSE WITH BRASS-TO-BRASS FITTINGS TO  
                PREVENT LEAKS AT CONNECTION. 

 

Summary of Contents for DXV-45 Deep Timber III

Page 1: ...T TRY TO LIGHT ANY APPLIANCE 4 EXTINGUISH ANY OPEN FLAME 5 DO NOT USE THE PHONE IN YOUR BUILDING 6 IMMEDIATELY CALL YOUR GAS SUPPLIER FROM A NEIGHBOR S PHONE 7 FOLLOW THE GAS SUPPLIERS INSTRUCTIONS 8...

Page 2: ...ION AND REGISTRATION FORM 36 WARRANTY 39 SPECIFICATIONS MENDOTA MODEL DXV 45 High Fire Adjustable to Low Fire BTUH MODEL DXV 45 NAT GAS 45 000 7 500 BTUH MODEL DXV 45 L P GAS 40 000 5 000 NOTE LP CONV...

Page 3: ...e an alternate heat supply Installation repair and any adjustments to logs or burner must be done by a qualified service person The Fireplace should be inspected before use and at least annually by a...

Page 4: ...a large area of your home if situated to maximize heat circulation Air movement options for maximizing heat circulation which can be considered are through the wall grills or floor grills the continuo...

Page 5: ...higher than 7500 please con tact the Mendota technical service department for specific venting requirements and venting restrictions DXV 45 GAS DIRECT VENT FIREPLACE SPECIFICATIONS CLEARANCES DIRECT...

Page 6: ...ed on the top of this fireplace The Top Screw Strip provides a 4 clearance to combustible materials at the top of the fireplace See Page 4 for specific details Combustible wall covering materials may...

Page 7: ...ual manual shut off valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 1 2 PSIG 3 5 kPa The proper gas line diameter must be selected to run from...

Page 8: ...Gas Fireplace an additional inches to inches regulator must be installed for the Fireplace EXCEPTION Some codes allow 2 PSI 1 4KPA supplies to enter the residence in which case pounds to inches regula...

Page 9: ...ance to non mechanical air supply inlet to building or the combustion air inlet to any other appliance 12 inches 30 cm minimum D Vertical clearance to ventilated soffit located above the terminal from...

Page 10: ...ng separate solid fuel or gas burner appliance Each direct vent gas appliance must have its own separate vent system Common vent systems are prohibited To assure proper venting performance of the high...

Page 11: ...REQUIREMENTS FOR NG AND LPG NOTE IF A 90 ELBOW IS CONNECTED DIRECTLY TO THE FLUE OULET THE MAXIMUM HORIZONTAL DISTANCE FROM THE FLUE OUTLET CENTERLINE TO THE OUTSIDE WALL IS 24 A MAXIMUM OF THREE 3 90...

Page 12: ...VANIZED ELBOW 5 8 4 45 01 00229 ADJUST WALL THIMBLE 5 8 5 45 01 00226 11 14 ADJUSTABLE PIPE 5 8 9 45 01 00239 ATTIC INSULATION SHIELD 12 5 8 10 45 01 00236 ROOF FLASHING 0 12 TO 6 12 5 8 10 45 01 0023...

Page 13: ...wall 3 Cut and frame a 10 3 4 x 10 3 4 opening in the outside wall The hole must be positioned so the vent sys tem will run level or have a rise AND be perpendicular to the wall The height of the open...

Page 14: ...through any ceilings and will penetrate the outside wall Since vent pipe sections overlap we suggest pre assembling and measuring the total vent pipe run so you can more accurately locate the point wh...

Page 15: ...o assemble lengths of pipe and elbows ne cessary to reach up through the roofline Galvanized pipe and elbows may be utilized in the attic as well as above the roofline The galvanized finish is desirab...

Page 16: ...l service department for specific venting requirements and venting restrictions 8 Height H of top of vent cap can be determined as follows 9 Complete installation with storm collar and vent cap H DIME...

Page 17: ...nts The Andover Door and Prairie Door Fronts are designed to be Full Face trim kits These two Fronts cover an area equivalent to that shown in the diagram below Any material that protrudes into this a...

Page 18: ...Grills Victoria Filigrees and Tuscany Filigrees The Millenia Flat Grills Victoria Filigree and Tuscany Filigree are designed to be inside fit trim kits All of these trim kits fit within the inner peri...

Page 19: ...Holding Tabs on firebox top 2 Lower door so the 3 Tabs on firebox top fit through the 3 slots on the doorframe i e Hang door on the 3 Tabs 3 Swing in the lower edge of door until it touches lower fire...

Page 20: ...L BED AND LOGS INSTALLATION Carefully unpack the shipping boxes containing the coal bed sections and logs and remove them gently from the foam packing Note Each coal bed and log is lettered on its und...

Page 21: ...20...

Page 22: ...21...

Page 23: ...22...

Page 24: ...23...

Page 25: ...24...

Page 26: ...rison to the diagram below and if any flames are floating off the burner surface after 10 minutes of starting the fireplace turn off the fireplace and contact your installer or fireplace dealer Have t...

Page 27: ...national codes LIGHTING CHECK OFF LIST All items on Installation Check Off List see above must be completed Connect thermostat to terminal panel next to gas valve per instructions on pg 27 Perform Le...

Page 28: ...dule and coals see pg 20 With logs coals in place cycle the burner again to make sure of prompt ignition of burner and that the flame runs smoothly around entire burner NOTE Logs will produce a strong...

Page 29: ...volt battery annually 16 Open windows for first two hours of operation NOTICE Initial heater start up will cause some NON TOXIC off gassing of adhesives gasket binders paint and other materials Most...

Page 30: ...nit lights DO NOT push button and release quickly before burner lights Burner should light IMMEDIATELY and then button can be released If unit does not light imme diately release button wait 60 second...

Page 31: ...egulated with the rheostat included but it must be on at all times the burner is on NOTE There will be a time delay in blower operation during heat up approx hour and extended blower operation during...

Page 32: ...r should be removed by qualified person and the air shutter opening checked to be cer tain that the shutter is set correctly at 1 8 to 1 4 open for Natural gas and 1 2 minimum open for L P gas NOTE Fo...

Page 33: ...odically Exte rior glass may be cleaned with cleaner as desired Interior glass use soap and water Kel Kem Glass Cleaner or equivalent NOTE Additives that are put in gas both natural and propane to mak...

Page 34: ...olt readings must be taken by a qualified installer at the time of installation and after any interruption in burner operation These readings will establish proper thermopile millivolt generation and...

Page 35: ...33 below Identify the pressure regulator spring that is located in the center of the black rubber gasket Discard both the black rubber gasket and spring 3 Install the new LP Pressure Regular onto the...

Page 36: ...35 Figure 10 Figure 9 LP PRESSURE REGULATOR NG PRESSURE REGULATOR GAS VALVE BODY SCREWS...

Page 37: ...NITER 35 01 00311 LARGE CHUNK COALS 05 07 00061 THERMOPILE 35 01 00304 EMBER FLOOR SET 05 01 00118 THERMOSTAT Wall Mount 10 03 00068 REAR FLAME WIRING W SWITCH 05 01 00157 SNAP DISC FAN TEMP SENSOR 05...

Page 38: ...Orifice 0 610 m Orifice Front 44 Rear 35 Front 3 64 Rear 52 Orifice 610 1370 m Orifice Front 45 Rear 35 Front 3 64 Rear 53 Maximum output Btu hr Sortie maximale 32 400 28 800 Manifold Pressure in w c...

Page 39: ...table pipe sections CHECK FOR PROPER CLEARANCES TO COMBUSTIBLES VENT LOCATIONS Per Manual INSTALL PROPER SIZE GAS LINES CHECK FOR GAS LEAKS Per Manual CHECK FOR CORRECT GAS PRESSURE AT MANIFOLD Per Ma...

Page 40: ...39 TAPE SHUT JOHNSON GAS APPLIANCE COMPANY 520 E AVENUE N W CEDAR RAPIDS IA 52405 MENDOTA EXTENDED LIFETIME PROTECTION AND LIMITED WARRANTY POSTAGE NEEDED...

Page 41: ...any part of this limited warranty Mendota has the right to investigate and inspect the exact original Fireplace and entire installation without any alterations or tampering in the event a claim is ma...

Page 42: ...41 Johnson Gas Appliance Company 520 E Avenue N W Cedar Rapids IA 52405 Mendota Hearth Division www johnsongas com or www mendotahearth com 0406 Part 65 05 00090...

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