Mendota DXV42 TIMBERFIRE Installation & Operating Instructions Manual Download Page 6

INSTALLATION INSTRUCTIONS 

CAUTION:

  Each installation must conform to all local, state and national codes. Refer to the national fuel gas code and local zoning and code authorities 

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 installation must conform to the most current edition of the National Fuel Gas Code ANSI Z223.1, also known as 
NFPA 54.  NOTE: The Mendota DXV Fireplace is approved for mobile home and bedroom installations. 

 

CAUTION:

  The Mendota DXV Fireplace may be installed in a manufactured (mobile) homes after the first sale of the home.  Manufactured home (mobile 

home) installation must conform with the Manufactured Home Construction and Safety Standard, Title 24 CFR, Part 3280, or, when such a standard is not 
applicable, the Standard for Manufactured Home Installations, ANSI A225.1/NFPA 501A, or CSA Z240.4-Gas Equipped Mobile Housing.  Consult your 
local building official.  Note:  For mobile home installations unit must be bolted to the floor and properly grounded. 

The DXV Fireplace must be installed by a qualified Mendota approved service person. 

 
1.  After selection of the desired fireplace location 

(see pg.3

, prepare the rough opening using framing dimensions 

on page 4 Prepare opening to allow for co-axial vent (see "Flue Venting Instructions" on 

pgs. 8

 -18

). 

2.  Check to make certain all venting requirements and locations are being followed. (See pg. 8 -18). 
3.  The Fireplace is designed to be installed into rough framing.  The drywall will cover the adjustable nailing 

flanges on the Fireplace sides.  Before sliding the Fireplace into the framed opening, adjust the nailing flanges 
to accommodate the thickness of the wall material.  

NOTE

:  FRAMING MATERIAL ABOVE FIREPLACE 

MUST MAINTAIN CORRECT CLEARANCES TO VENT PIPE. 

WARNING 

DO NOT COVER THE 2” BLACK FRONT SURFACE OF THIS UNIT IF YOU INTEND TO USE THE 

ANDOVER, BENTLEY, DEERFIELD or WELLINGTON TRIMS!!

 

4.  Slide Fireplace into the rough framed opening.  When finishing the unit, combustible materials may overlay 

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" black surface, 

only if 

you are certain that a Deerfield Front, Andover Front, Bentley Front, Prairie Front or a Wel-
lington Front is NOT going to be used as the optional trim

, up to the inside edge of black frame (next 

to glass).  ROUGH FRAMING CAN COME NO CLOSER TO UNIT THAN THE STAND-OFFS.

 

5.  Level the Fireplace and secure into opening by nailing through the nailing flanges on cabinet side panels.  

Holes are provided in fireplace floor behind grill to lag screw fireplace to floor, if required.   
NOTE:     A removable panel in the enclosure for future visual inspection of the flue connection is recom-
mended 

6.  Have an electrician install a 120 Volt supply to the junction box on lower left side of the fireplace cabinet.  

Connect wires to the duplex outlet.  This duplex outlet is removable from outside of cabinet for easy wiring.  
Make sure the outlet is properly grounded and that the installation conforms to all local and national wiring 
codes.  See "Blower Operation" below, Blower Wiring Diagram pg. 28and "Electrical Requirements" pg. 3 

7.  Have gas supplier or qualified plumber install gas supply line to fireplace and connect to gas nipple.  Be sure 

gas and plumbing instructions (see pgs. 6-7) all local and national codes are carefully followed.  Carefully 
check for gas leaks and for proper gas pressure. 

IMPORTANT: 

Any safety screen, guard, glass, grill, pressure relief cap, etc. removed for servicing a fireplace/room heater must be 

replaced  

prior to operating the fireplace/room heater. 

 

BLOWER OPERATION 

The Mendota DXV Fireplace is designed so the blower operates continually when main burner is on.  The blower output can 
be regulated with the rheostat (included).  NOTE:  There will be a time delay in blower operation during "heat-up" (approx. 
1/2 hour) and extended blower operation during "cool-down" of unit. (approx. 1/2 hour). 
 

OPERATION DURING POWER OUTAGES  

The fireplace is designed to operate during power outages.  The blower will not operate, but natural convection can be im-
proved by removing the upper Millenia grills, opening the Andover and Prairie Doors and opening the Wellington Screens. 

 

GAS SUPPLY REQUIREMENTS 

 

5

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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