Heatilator MH36A Operating Instructions Manual Download | Manualshive

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8

17804 Rev i

08/04

MH SERIES INSTALLATION INSTRUCTIONS

Chimney Sections

AS8

Straight Attic

Insulation Shield

SL3 - Chimney Stabilizer

RF370 - Roof Flashing

Flat to 6/12 Pitch

RF371 - Roof Flashing

6/12 to 12/12 Pitch

Firestop Spacer

Catalog #

A

B

FS338

0-deg.

14-1/2 in.

FS339

15-deg. 18-3/8 in.

FS340

30-deg.

23 in.

Catalog #

A

B

SL306

6 in.

4-3/4 in.

SL312

12 in.

10-3/4 in.

SL318

18 in.

16-3/4 in.

SL324

24 in.

22-3/4 in.

SL336

36 in.

34-3/4 in.

SL348

48 in.

46-3/4 in.

A = Actual Length
B = Effective length (length of

chimney part after it has
been snapped to another)

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Summary of Contents for MH36A

Page 1: ...ury or property damage Refer to this manual For assistance or additional information consult a qualified installer service agency or the gas supplier INSTALLATION OPERATING INSTRUCTIONS MH36A MH39A MH42A WOODBURNING FIREPLACE FOR MANUFACTURED HOUSING Note An arrow found in the text signifies change in content ...

Page 2: ... problems that may result from the lack of adequate combustion air It is the responsibility of the builder contractor to ensure that adequate combustion air has been provided for the fireplace 4 The fireplace must be installed with the Hearth Home Technologies SL Series Chimney System The chimney system must always terminate outside the building Be sure to follow all chimney specifications given i...

Page 3: ...of the home If you desire to put a fireplace in your basement we recommend that you consider a direct vent gas fireplace Basements always have a significant negative air pressure that causes the fireplace system to be more susceptible to smoke spillage and cold flue back drafting Since direct vent gas fireplaces are sealed they are not affected by the negative pressure that exists in basements Fin...

Page 4: ...However minimum and maximum clearances must be maintained at all times The illustrations and diagrams used throughout these installation instructions are not drawn to scale B DESCRIPTION OF THE FIREPLACE SYSTEM This fireplace system has been tested and listed in accordance with UL 127 and ULC S610 standards and has been listed by Underwriters Laboratories Inc for installation and operation in the ...

Page 5: ...earth Extension DM1036 DM1039 DM1042 Original Bifold Glass Doors Black Finish DM1036B DM1039B DM1042B Original Bifold Glass Doors Polished Brass Finish included with fireplace DM1036S DM1039S DM1042S Original Bifold Glass Doors Stainless Steel Finish DP1036 none DP1042 Perception Glass Doors Black Finish DP1036B none DP1042B Perception Glass Doors Polished Brass Finish DP1036S none DP1042S Percept...

Page 6: ...36 in long SL348 Chimney Section 48 in long SL315 Chimney Offset Return 15 deg SL330 Chimney Offset Return 30 deg JB877 Chimney Joint Band CB876 Chimney Bracket TR344 Round Termination Cap CP311 Manufactured Housing Convenience Pack 11 ft CP313 Manufactured Housing Convenience Pack 13 ft MH841 Manufactured Housing 20 in Thimble Extension MH842 Manufactured Housing Thimble and Flashing RF370 Roof F...

Page 7: ...4 17804 Rev i 7 MH SERIES INSTALLATION INSTRUCTIONS Offset Return TR344 Round Termination Cap with Storm Collar JB877 Joint Band CB876 Chimney Bracket CAK4A Chimney Air Kit MH841 MH842 Roof Thimble Flashing ...

Page 8: ...ch RF371 Roof Flashing 6 12 to 12 12 Pitch Firestop Spacer Catalog A B FS338 0 deg 14 1 2 in FS339 15 deg 18 3 8 in FS340 30 deg 23 in Catalog A B SL306 6 in 4 3 4 in SL312 12 in 10 3 4 in SL318 18 in 16 3 4 in SL324 24 in 22 3 4 in SL336 36 in 34 3 4 in SL348 48 in 46 3 4 in A Actual Length B Effective length length of chimney part after it has been snapped to another ...

Page 9: ...d doors central heat outlets or returns or other locations of considerable air movement can affect the performance and cause intermittent smoke spillage from the front of the fireplace Consideration should be given to these factors before deciding on a location CLEARANCES A minimum 1 2 in air clearance must be maintained at the back and sides of the fireplace assembly Chimney sections at any level...

Page 10: ...ber of the fireplace assuming combustible materials are used All required clearances to combustibles around the fireplace must be adhered to Any framing across the top of the fireplace must be above the level of the top standoffs Chimney sections at any level require a 2 in minimum air space clearance between the framing and chimney section CLEARANCES A minimum 1 2 in air clearance must be maintai...

Page 11: ...ested to provide flexibility in construction The following figures are the minimum distances from the base of the fireplace 1 Minimum overall straight height 13 ft 2 Minimum height with offset return 14 5 ft 3 Maximum height 90 ft 4 Maximum chimney length between an offset and return 20 ft 5 Maximum distance between chimney stabilizers 35 ft 6 Double offset return minimum height 24 ft 7 Maximum un...

Page 12: ... 4 Read across the chart and find the number of chimney sections required and the model number of those particular chimney parts 5 Whenever the chimney penetrates a floor ceiling a firestop spacer must be installed 6 The effective height of the fireplace assembly is measured from the base of fireplace to top of starter collar See Figure 6 Example Your A dimension from Figure 7 is 14 1 2 in Using T...

Page 13: ...tes If the horizontal distance from the side of the chimney to the peak of the roof is 10 ft or less the top of the chimney must be at least 2 ft above the peak of the roof but never less than 3 ft in overall height above the highest point where it passes through the roof If the horizontal distance from the side of the chimney to the peak of the roof is more than 10 ft a chimney height reference p...

Page 14: ...tructions for framing on pages 9 11 Slide the fireplace into position Be sure to provide the minimum air clearance at the sides and back of the fireplace assembly 2 Place the Protective Metal Hearth Strips Included with your fireplace you will find two metal hearth strips measuring approximately 26 in x 4 in These strips are used to provide added protection where the fireplace and the hearth exten...

Page 15: ...op bead on the lower section The inner flue is placed to the inside of the flue section below it The outer casing is placed outside the outer casing of the chimney section below it See Figure 10 5 Install the Firestop Spacers Mark and cut out an opening in the ceiling for the firestop spacer being utilized 14 1 2 in x 14 1 2 in for an FS338 14 1 2 in x 18 3 8 in for an FS339 and 14 1 2 in x 23 in ...

Page 16: ... unsupported chimney length limitations that are given on page 11 under Chimney Requirements Check each section by pulling up slightly from the top to ensure proper engagement before installing the succeeding sections If they have been connected correctly they will not disengage when tested 8 Secure the Chimney System When offsets and returns are joined to straight pipe sections they must be locke...

Page 17: ...The MH841 Thimble Extension is required when the ceiling roof thickness exceeds 12 1 2 in The extension should overlap the thimble 1 in c To attach the extension to the thimble drill 1 8 in holes through the outer shield of the thimble using the predrilled holes in the extension as guides Attach the extension to the thimble using the screws provided with the extension d Install the thimble assembl...

Page 18: ...he fireplace Remove the cover plate from the side of the fireplace assembly where the air kit is to be installed Install the outside air kit as detailed in the installation instructions included with it See Figure 16 for handle location operation Figure 17 Installing a TR344 Round Termination Cap WARNING Detailed instructions for installation of the termination cap and storm collar are packaged wi...

Page 19: ...tories Inc for use in this specific model fireplace Unless the unvented gas log heater is tested and listed for use in this factory built fireplace a fire hazard may be created that can result in a structure 13 Gas Log Lighter Provisions Knockouts are provided on both sides of the fireplace to allow for connection of a certified gas log lighter or a decorative gas appliance with a maximum input of...

Page 20: ...replace from both radiant heat and sparks The construction of and materials used for a hearth extension are shown in Figures 19 and 20 A hearth extension of this construction may be covered with any noncombustible decorative material and may have a maximum thickness as per the illustration Seal gaps between the hearth extension and the front of the fireplace with a bead of noncombustible sealant F...

Page 21: ...hose consisting entirely of steel iron brick tile concrete slate glass or plasters or any combination thereof c Noncombustible Sealant Material Sealants which will not ignite and burn General Electric RTV103 Black or equivalent Rutland Inc Fireplace Mortar 63 or equivalent After completing the framing and applying the facing material dry wall over the framing a 1 2 in wide maximum bead of noncombu...

Page 22: ...Appliances for Installation in Vented Fireplaces ANSI Z21 60 When operating your fireplace the flue damper must be in the open position This fireplace was not tested and listed for use with an unvented gas log heater Do not install an unvented gas log heater in this fireplace and operate it with the flue damper in the closed position unless the unvented gas log heater has been specifically tested ...

Page 23: ...a greater density than soft woods A piece of hardwood will contain about 60 more BTU s than an equal size piece of soft wood Firewood is commonly sold by the cord 128 cu ft A cord of seasoned oak hardwood would contain about 60 more potential energy than a cord of seasoned pine soft wood Soft woods are generally considered coniferous These are trees with needle like leaves that stay green all year...

Page 24: ...e wood to allow air to circulate freely around and through the woodpile b Elevate the woodpile off the ground to allow air circulation underneath c The smaller the pieces the faster the drying process Any piece over 6 in in diameter should be split d Cover the top of the woodpile for protection from rain and snow Avoid covering the sides and ends completely Doing so may trap moisture from the grou...

Page 25: ...ney is clean and free of creosote buildup Make sure overhanging trees and branches are cut back within ten feet of the top of the chimney Ensure the chimney cap is clean and free of any buildup of soot or creosote If you still suspect you have a low draft problem it may be necessary to increase the volume of air in your flue system Since the diameter of your flue system is matched with the size of...

Page 26: ...urred If creosote has accumulated it should be removed to reduce the risk of a chimney fire 3 Chimney Cleaning If you do detect a buildup of creosote contact a qualified chimney sweep or clean it yourself To do this perform the following steps a Open the damper b Hang a damp sheet across the fireplace opening to stop dirt and soot from entering the room c Remove the termination cap or housing top ...

Page 27: ...5 Firewood 23 Flashing 17 Flue 22 Framing 10 Fuel 23 G Gas Codes 19 22 Gas Knockout Location 6 Gas Log Lighter Provisions 19 General Information 22 Glass Doors 5 21 Grate 5 23 H Hearth Extension 20 Positioning 21 I Insulation Shield 8 16 J Joint Band 7 L Leveling the Fireplace 14 Locations 9 M Mantel 10 11 21 Material Sealant 21 Metal Hearth Strips 14 Moisture Content of Wood 23 N Noncombustible M...

Page 28: ...haust fans or forced air furnaces or other causes 5 use of fuels other than those specified in the Operating Instructions 6 installation or use of components not supplied with the Fireplace or any other components not expressly authorized and approved by HHT and or 7 modification of the Fireplace not expressly authorized and approved by HHT in writing This warranty is limited to only the component...

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