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MW38-DV  Modular Fireplace

P/N XG0112

Introduction

About the Wildfire 38:

The 

MW38-DV

 is a direct-vented gas fireplace equipped with a dual-

inlet Wildfire® Burner. It is available in four models:

 

 

 

 

 

Top Vent (Product Code MW38-

DT

)

 

 

 

 

 

Rear Vent (Product Code MW38-

DR

)

 

 

 

 

 

Intermittent Pilot - Top Vent (Product Code MW38-

DT-I

)

 

 

 

 

 

Intermittent Pilot - Rear Vent (Product Code MW38-

DR-I

)

The MW38-DV is rated for Natural Gas at 29,000 BTU/H (8.5
Kilowatts) Input or

 

Propane at 29,000 BTU/H (8.5 Kilowatts) Input

How to use this manual:

This manual covers all models and unless otherwise specified, the
designation MW38-DV refers to all models. Sections which are
specific to a particular model are marked with a

    symbol,

plus the appropriate model number.

Warranty and Installation Information:

The Montigo warranty will be voided by, and Montigo

 

disclaims any

responsibility for, the following actions:

Modification of the fireplace and/or components including Direct-
Vent assembly or glass doors.

Use of any component part not manufactured or approved by
Montigo in combination with this Montigo fireplace system.

Installation other than as instructed in this manual.

Consult your local Gas Inspection Branch on installation
requirements for factory-built gas fireplaces. Installation & repairs
should be done by a qualified contractor.

Installations in Canada

 must conform to the current 

CAN/CGA B-

149.1

 and 

.2

 Gas Installation Code and local regulations. If the

optional air-circulating fan kit is installed, it must be electrically
grounded in accordance with 

CSA C22.1

 Canadian Electrical Code

Part 1 and/or Local Codes.

Installations in the USA

 must conform to local codes, or in the

absense of local codes to the National Fuel Gas Code, 

ANSI Z223.1-

1988

. If the optional air-circulating fan is installed, it must be

grounded in accordance with local codes or, in the absence of local
codes, with the National Electrical Code, 

ANSI/NFPA 70-1987.

Table Of Contents

Introduction .............................................................................

2

Installation

Installing the Fireplace Shell ......................................... 3

Installing the Gasline ..................................................... 4

The Remote Switch ....................................................... 4

Direct Vent Installation .................................................. 4

General Requirements ...................................... 4

Terminations ..................................................... 5

Top Vent Models with horizontal runs ............... 6

Top Vent Models with vertical runs ................... 8

Rear Vent Models ............................................. 9

Construction around the fireplace

Facing ............................................................. 10

Mantels and Surrounds ................................... 10

Wiring ................................................................ 10 - 11

Installing the Logset .................................................... 11

Removing and Installing the Insert .............................. 11

Removing and Installing the Door ............................... 12

Operation ........................................................................

13 - 14

Maintenance ...................................................................

15 - 16

Warranty .................................................................................

17

Appendix

A. Spare Parts ............................................................. 18

B. Termination Locations ............................................ 19

CAUTIONS

Due to its high operating temperatures, the appliance
should  be located out of traffic & away from furniture and
draperies.

Children and adults should be alerted to the hazards
of the high surface temperature, which could cause
burns or clothing ignition.
Young children should be carefully supervised when
they are in the same room as the appliance.
Clothing or other flammable materials should not be
placed on or near the appliance.

Summary of Contents for Wildfire MW38-DV

Page 1: ...ur building Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department Warning Improper installation adjustment alteration serviceormaintenancecancause injury or property damage Refer to this manual For assistance or additional information consult a qualified installer service agency or the gas su...

Page 2: ...AN CGA B 149 1 and 2 Gas Installation Code and local regulations If the optional air circulating fan kit is installed it must be electrically grounded in accordance with CSA C22 1 Canadian Electrical Code Part 1 and or Local Codes Installations in the USA must conform to local codes or in the absense of local codes to the National Fuel Gas Code ANSI Z223 1 1988 If the optional air circulating fan ...

Page 3: ...raming WARNING When this appliance is installed directly on carpeting tile or any combustible material other than wood flooring it must be installed on a metal or wood panel extending the full width and depth of the appliance 38 28 3 4 34 3 4 14 1 2 4 3 4 4 3 4 14 3 4 28 3 4 34 3 4 Ø7 Ø4 14 3 4 38 33 Ø7 C Ø4 5 1 2 Clearances These clearances apply to all dimensions except the framed opening where ...

Page 4: ...ream of the gas supply controls to the appliance The fireplace gas connection and the main operating gas valve is located behind the removable brass trim at the bottom of the unit and need only be attached to the gas line with an approved fitting as required by the applicable installation codes Installation Figure 6 Fireplace locations and vent terminations Note After gas line is connected each ap...

Page 5: ... such as high rises where the termination may not be easily installed from the building s exterior 1 Frame the termination opening to 12 x 12 2 Fasten the MOSR frame to the interior side of the studs using a minimum of 4 screws 3 Insert the termination into the MOSR frame as shown here and attach by screwing through the four pilot holes in the termination 12 12 12 MOSR Installing Terminations with...

Page 6: ... NOT be an acceptable installation Figure 7 Venting Graph 0 12 24 36 48 60 72 84 96 108 132 120 144 156 168 180 Horizontal Run in Hearth 0 12 24 36 48 60 72 84 96 108 Figure 8 Heat Shield Install by sliding over the vent pipe where it passes through combustible construction Heat Shields Due to high flue temperatures heat shields are required on all 38 Series Modular Direct Vent installations excep...

Page 7: ...e required length Figure 9a Typical Top Vent installation If the 90 elbow is installed directly on the fireplace the height to the center of the termination is 44 Horizontal Venting Figure 9b Typical Top Vent installation The solid sections can be used in various combinations to obtain the desired vent run The vent run must fall within the limits set by the venting graph 90 Elbow MEXT Section Heat...

Page 8: ...ured center to center of piping Example Typical vent installation 20 vertical vent 2 2 offsets required 25 of 20 5 max offset allowed This venting configuration meets requirements A Termination MVTK 1 B Flex sections MFL 1 12 section MFL 2 24 section MFL 3 36 section MFL 4 48 section C Solid sections MEXT 1 12 section MEXT 2 24 section MEXT 3 36 section MEXT 4 48 section MEXT 6 72 Section D Suppor...

Page 9: ...ation The height from the hearth to the center of the termination is 28 MD38 DV Rear Vent versions are supplied with an 18 extension pipe EXT 18 with female female connections For shorter installations cut the EXT 18 to the desired length For extended installations use the EXT 18 section as supplied for an 18 vent run Note For Rear Vent models maximum horizontal run with no vertical lift must neve...

Page 10: ...rizontal run to the wall flange of the vent termination is 126 this would be an acceptable installation ExampleC UnacceptableInstallation If the vertical dimension from the floor of the fireplace is 78 and the horizontal run to the wall flange of the vent termination is 108 this would NOT be an acceptableinstallation Figure 18a MW38 DV Rear Vent Venting Graph 0 12 24 36 48 60 72 84 96 108 132 120 ...

Page 11: ... of T V and radio components Figure 19b Combustible surrounds Sheetrock Drywall Header 3 45 Painting Special care is recommended by the Master Painters and Decorators Association when painting the fireplace surrounds to select and apply a quality Alkyd sealer prior to the applying of latex paints This is to prevent leaching of water from evaporation and causing a brownish staining effect to paint ...

Page 12: ...lation Guide included with the fan kit NOTE If any of the original wire supplied with the appliance is replaced it must be replaced with the same type or its equivalent Removing and Installing the Door Removing the door surround The door surround is held in place by two metal clips at the top and one magnet on each side To remove the surround pull the bottom outwards and lift upwards until the slo...

Page 13: ... factory To install the two small logs C and D simply place them onto their mating positions as shown in figure 22a below When log set is installed it should look like figure 22b Figure 22a Log placement Figure 22b Completed log installation Log C Logs A and B Log D NOTES If logs are not placed properly excessive sooting will result If handling or vacuuming the logs do not attempt to move the two ...

Page 14: ...l MW38 DV 3 Push in gas control knob slightly and turn clockwise to Off Do not force 4 Flip up lower brass trim 1 Turn off remote switch 2 Flip down lower brass trim 1 STOP Read the safety information above on this label 2 Flip down lower brass trims 3 Push in gas control knob and turn clockwise to OFF 4 Wait five 5 minutes to clear out any gas Smell for gas including near the floor If you then sm...

Page 15: ...ht any appliance Do not touch any electrical switch do not use any phone in your building Immediately call your gas supplier from a neighbour s phone Follow the gas supplier s instructions 1 Turn off remote switch 2 Flip down lower brass trim 3 Turn the switch on the gas control to Off 4 Flip up brass trim 1 STOP Read the safety information above on this label 2 Flip down lower brass trims 3 Turn ...

Page 16: ...Operation Lighting Instructions See pages 13 and 14 Burner Adjustment The Wildfire is equipped with an adjustable burner allowing you to raise or lower the flames To adjust the flames locate the black knob marked Hi Lo in the centre of the gas control valve See Figure 25 To raise the flame height turn the black knob located behind the lower trim counterclockwise To lower the flame height turn cloc...

Page 17: ...en Replace SV9500 SV9600 Check Transformer Line Volt Supply Replace SV9500 SV9600 Save old Igniter Flame Rod Assembly for service INSET HSI Terminals CHECK Line voltage power Low voltage transformer Limit Controller Thermostat Wiring Air proving switch on combustion air blower system Vent damper if used is open and end switch made Gas Control Valve Figure 26 Sit Nova 820 gas valve Pilot Burner Adj...

Page 18: ... solid fuel will cause damage to the Gas Appliance will produce excessive temperatures and will result in a fire hazard Limitations On Liability Limitations On Liability Limitations On Liability Limitations On Liability Limitations On Liability It is expressly agreed and understood that The Companies sole obligation and purchaser s exclusive remedy under this Warranty under any other warranty expr...

Page 19: ...Guard MTKOG 7 Wildfire 4 piece Logset 8 4 Piece Picture Frame Surround PFS 9 3 Piece Picture Frame Surround PFO 10 Horizontal Trim Kits 11 Door Cover Square DF0 12 Door Cover Arched DFA 13 Control Module for Model W38 DVM 14 Control Module for Model W38 DVM I 15 Aluminum Tubing 1 4 dia 16 Locking Nuts 17 Spacer 18 Bulkhead Fitting 19 90 Elbow 20 Burner Orifice 21 Burner Tube 13 10 11 14 17 18 19 2...

Page 20: ...Page20of19 MW38 DV Modular Fireplace P N XG0112 Appendix B Termination Locations 16 ...

Page 21: ...MW38 DV Modular Fireplace P N XG0112 Page21of19 Canadian Heating Products Inc Surrey BC V3W 2V6 Montigo Del Ray Corp Ferndale WA 98248 XG0112 Rev 04 04 99 ...

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