Mendota DXV42 TIMBERFIRE Installation & Operating Instructions Manual Download Page 4

 

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Your Mendota Gas Fireplace has a state-of-the-art co-axial direct vent, sealed combustion system.  This advanced, 
highly efficient system brings in outside air for combustion, has a separate exhaust vent and efficiently heats and re-
circulates room air.  The Mendota system maintains high air quality, maximizes efficiency and assures proper opera-
tion. 

SAFETY AND STRUCTURAL CONCERNS: 

The DXV Fireplace must be installed and serviced by a Mendota approved service person.  Any adjustments to burner, pilot, 
logs or coal bed must be made by a Mendota approved service person.  Pilot flame must be checked with voltmeter.  Pilot flame 
must register a minimum of 460 on millivolt meter.  If pilot goes out always wait five (5) minutes before relighting pilot.  

ALWAYS REMOVE THE GLASS DOOR WHEN LIGHTING THE PILOT.

  The burner must light immediately & the 

flame must travel promptly and smoothly around "curve" and light entire burner.  The flame must not "lift off" burner.  All vent 
pipe sections must be "twist locked" and all inner pipe joints (Simpson Duravent type only) must be sealed and leak proof using 
2000F Silicate Sealant.

 

The Mendota Direct Vent Fireplace may be placed within inches of adjacent sidewalls.  (See 

FIGURE 1 on pg.4

).  The fireplace 

may be placed directly on concrete or wood flooring.  If the appliance is to be installed on carpeting, vinyl or other combustible 
material other than wood flooring, the appliance shall be installed on a metal or wood panel extending the full width and depth of 
the appliance.  Combustible mantels must be installed as 

per FIGURE 1 on pg. 4

.  Non-combustible (marble, brick, stone, etc.) 

mantels or mantels with steel protector plate on underside maybe installed at any desired height above upper grill. 

NEVER BLOCK OFF UPPER OR LOWER GRILLS.  ALWAYS USE MENDOTA GRILLS, MENDOTA VENT SYSTEMS 
AND MENDOTA APPROVED VENT CAPS. 
A non-combustible hearth protector is required and must extend a minimum of 16" in front of the fireplace (

see Figure 1 on pg.4 

for raised hearths). 

VENTING REQUIREMENTS:

 

Use only Mendota approved vents and vent caps when installing your fireplace.  Closely follow venting locations, directions and 
requirements (

see pages 8-17

).  Observe the restrictions relating to vent position on exterior of home 

(see pg. 8

). 

HEATING PERFORMANCE: 

Mendota Gas Built-in Fireplaces are true, high efficiency gas heaters.  With its high heat output the Mendota Fireplace will heat 
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 continuous operation of central heating furnace blowers, or ceil-
ing fan.  

The most efficient method for overall heat distribution is a ceiling fan.

  The heat output of the Fireplace can be re-

duced by up to 13,000 BTUH by slowly turning the Hi/Lo temperature knob on the gas valve counter clockwise from "Hi" to 
"Lo".  Blower can also be turned down to reduce heat output. 

AESTHETIC CONSIDERATIONS: 

Burning or static fireplaces are a major aesthetic focus in any room.  Locate your gas fireplace as you would a television set.  
The Mendota Hearth Gas Fireplace will be a continuing source of comfort and fascination.  Corner installations will afford you 
the greatest potential for viewing in many rooms. 
 
We suggest installing the Mendota Fireplace 6 to 12 inches above the floor by utilizing an elevated hearth.  

(See pg. 4

ELECTRICAL REQUIREMENTS: 

A blower is standard on your Mendota Direct Vent Fireplace; A 120 volt electrical service must be supplied at the fireplace loca-
tion at the time of installation.  It must be electrically grounded in accordance with local codes or in their absence with current 
edition of the National Electric Code ANSI/NFPA 70.  Power supply to blower must be continuous.  DO NOT use switch or 
variable control in power supplied to fireplace. 

The blower on this appliance is equipped with a three-prong plug for protection against shock hazard and should be plugged di-
rectly into the grounded three-prong receptacle provided with the fireplace.  

Do not cut or remove the grounding prong from 

the plug. 

NOTE:  The blower output can be adjusted with the rheostat.  Note:  There will be delays in blower operation during "heat-up" 

(approx. ½ hr.) and extended blower operation during "cool-down" (approx. ½ hr.) of unit (see Blower Wiring Diagram 
pg. 26). 

Thermostat wire should be run from desired thermostat location (or "on/off") switch to the fireplace terminals (located behind 
lower grill) – see thermostat installation section (pg.27). 

Summary of Contents for DXV42 TIMBERFIRE

Page 1: ...S 3 DO NOT 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 INSTRU...

Page 2: ...DXV 42 NAT GAS 40 000 27 000 BTUH MODEL DXV 42 L P GAS 38 500 22 000 NOTE AN LP CONVERSION KIT MUST BE PURCHASED SEPARATELY FOR THIS FIREPLACE SEE PG 33 MAIN ORIFICE 30 NAT GAS 49 L P GAS OVERALL EFFI...

Page 3: ...r 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 professional service person More frequent cle...

Page 4: ...es 8 17 Observe the restrictions relating to vent position on exterior of home see pg 8 HEATING PERFORMANCE Mendota Gas Built in Fireplaces are true high efficiency gas heaters With its high heat outp...

Page 5: ...13 This requires 20 minimum to cen ter of opening for the horizontal pipe to exit the wall CAUTION If 90 elbows must be used with LPG a 3 foot vertical starter section must be used directly off the t...

Page 6: ...erlay nailing flanges and come in contact with the edges of the black front surface but may not overlay the 2 black surface Noncombustible material such as marble or brick can be installed over the 2...

Page 7: ...alve 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...

Page 8: ...ace 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 regulators are u...

Page 9: ...rminal within a horizontal distance of two feet 60 cm from the center line of the terminal 18 inches 46 cm minimum Vinyl surfaces require 24 inches 60 cm K Clearance to a mechanical air supply inlet 6...

Page 10: ...ts own separate vent system Common vent systems are prohibited To assure proper venting performance of the high performance Mendota Direct Vent Fireplaces and Stoves it is critical that the DuraVent G...

Page 11: ...FLASHING 0 12 TO 6 12 10 ROOF FLASHING 7 12 TO 12 12 11 STORM COLLAR 12 VERTICAL VENT CAP 13 SUPPORT BAND 14 HORIZONTAL VENT CAP 15 FIRESTOP SPACER 1 0 Figure 5 Flue Venting Components For all DuraVe...

Page 12: ...OF VERTICAL PIPE AND ONE 90O ELBOW CAN BE USED IF NO HORIZONTAL VENT SECTIONS GREATER THAN 7 ARE USED ALL OTHER INSTALLATIONS MUST FALL WITHIN ABOVE SHADED AREA NOTE THE SHORTEST HORIZONTAL RUN OF 7 6...

Page 13: ...TION CAN BE USED FOR HORIZONTAL RUNS WARNING For L P gas and high altitude installations above 4 000 ft but below 7 500 ft 45 elbows must be used in place of 90 elbows NOTE This requires 32 minimum he...

Page 14: ...the way when venting system is attached If this is the case you may want to adjust the fireplace location 2 Measure from the top of the fireplace up minimum 17 to centerline of 90 elbow See FIGURE 1 P...

Page 15: ...4DF FLASHING 0 12 6 12 PITCH 45 01 00202 4DF12 FLASHING 6 12 12 12 PITCH 45 01 00203 4DSC STORM COLLAR 45 01 00204 4DAIS12 ATTIC INSULATION SHIELD 45 01 00206 4DCACL CO LINEAR APPLIANCE ADAPTOR 45 01...

Page 16: ...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 where the vent pipe will penetra...

Page 17: ...f all Duravent pipe sections 5 Cut a 9 x 9 opening in the roof centered in the small drilled hole placed in the roof in No 1 The opening should be a sufficient size to meet all clearance requirements...

Page 18: ...IMENSION ROOF PITCH FEET METERS FLAT to 6 12 2 6 7 12 to 9 12 2 6 10 12 to 12 12 4 1 2 13 12 to 16 12 6 1 8 17 12 to 21 12 8 2 4 1 7 9 Complete installation with storm collar and vent cap ROOF TERMINA...

Page 19: ...3 Door 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 low...

Page 20: ...ont surfaces of log for additional glow Add wool to burned out space between front logs Fill area to back burner WARNING Do not block holes with excessive wool Delayed ignition and sooting can occur 4...

Page 21: ...2 0...

Page 22: ...2 1...

Page 23: ...2 2...

Page 24: ...2 3...

Page 25: ...and gas supply must be installed in accordance with in structions and local and national codes LIGHTING CHECK OFF LIST All items on Installation Check Off List see above must be completed Connect ther...

Page 26: ...y hanging slots on upper edge of door over tabs on upper edge of firebox opening Then swing in lower edge of door Carefully pull out the two 2 Spring Loaded Door Holding Bars located under the doorfra...

Page 27: ...ALWAYS WAIT 60 SECONDS When using remote control be sure to hold in button firmly until unit lights DO NOT push button and release quickly before burner lights Burner should light IMMEDIATELY and the...

Page 28: ...ervicing BLOWER WIRING DIAGRAM BLOWER OPERATION The Mendota DXV Fireplace is designed so the blower operates at all times the fireplace is operating The blower output can be regulated with the rheosta...

Page 29: ...ir Shutter MAIN BURNER GAS FLAME ADJUSTMENT During initial installation the burner should be removed by qualified person and the air shutter opening checked to be certain that the shutter is set corre...

Page 30: ...xterior glass may be cleaned with cleaner as desired Interior glass use soap and water Kel Kem Glass Cleaner or equivalent CAUTION Do Not use oven cleaner to clean glass NOTE Additives that are put in...

Page 31: ...COMBUSTION SYSTEM MILLIVOLT READING Millivolt readings must be taken by a qualified installer at the time of installation and after any interruption in burner operation These readings will establish...

Page 32: ...ed with cleaner as desired Interior glass use KEL KEM Polish Plus 65 06 00455 or comparable product Do Not use oven cleaner or abrasive cleaners to clean glass DO NOT CLEAN WHEN GLASS IS HOT 4 PERIODI...

Page 33: ...1 00416 49 drill see pg 28 for location Orifice is removed and installed with a deep well socket and ratchet 2 Install pilot orifice 05 04 00036 014 see pg 31 for location Remove and install pilot hoo...

Page 34: ...LOWER WITH MOTOR 15 02 00065 L H BLOWER WITH MOTOR HA 20 00152 VALVE ASSEMBLY WITH LP CONVERSION 05 02 00293 VALVE NAT GAS 15 02 00062 BLOWER ASS Y 05 02 00294 LP PLUG FOR NAT GAS VALVE 05 01 00157 TH...

Page 35: ...to that shown in the diagram below Any material that protrudes into this area on the sides top or bottom edges can only be flush with the front surface of the fireplace faceplate If planning to instal...

Page 36: ...imum Required dimensions shown in the diagram be low must be left bare and uncovered Hearth Protection Pad Installation Information when planning to Install the Deerfield Front If planning to install...

Page 37: ...nner perimeter of the Fireplace s Faceplate The bottom member of this trim however overlaps the bottom 2 black boarder of the fire place front faceplate Therefore DO NOT COVER THE BOTTOM 2 BOARDER OF...

Page 38: ...in w c 1 7 3 6 Minimum Inlet Pressure in w c 5 0 11 0 _______________________________________________ This appliance is equipped for installation at 0 610 meters This appliance must be installed in a...

Page 39: ...GAS LEAKS Per Manual CHECK FOR CORRECT GAS PRESSURE AT MANIFOLD Per Manual a 3 5 Inches Water Column Maximum Nat Gas b 10 5 Inches Water Column Maximum L P Gas TAKE COMBUSTION SYSTEM MILLIVOLT READIN...

Page 40: ...TAPE SHUT POSTAGE NEEDED JOHNSON GAS APPLIANCE COMPANY 520 E AVENUE N W CEDAR RAPIDS IA 52405 3 9...

Page 41: ...4 0 NOTES...

Page 42: ...4 1 NOTES MENDOTA EXTENDED LIFETIME PROTECTION AND LIMITED WARRANTY...

Page 43: ...rmine whether the claimed damage or malfunction was caused by abuse improper installation or other cause outside this warranty Mendota is not responsible for any repairs or material purchases that hav...

Page 44: ...Johnson Gas Appliance Company 520 E Avenue N W Cedar Rapids IA 52405 Mendota Hearth Division WEBSITE WWW JOHNSONGAS COM or WWW MENDOTAHEARTH COM 0904 Part 65 05 00092...

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