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Heat-N-Glo HST-38ND, Installation & Operating Instructions Manual, Page: 19 / 32

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Heat-N-Glo HST-38ND Installation & Operating Instructions Manual Download Page 19

08/04

27847 Rev H

19

HST-38 SERIES INSTALLATION INSTRUCTIONS

14. Install the Outside Air Kit

This fireplace is equipped to accept outside

combustion air if desired or required by local code. It
is recommended that the outside air system be used
whenever practical. The AK-225 Outside Air Kit consists
of one house vent, two plastic ties and one starting
collar.

UL Listed Class I, 4 in. flexible air duct should be

installed to bring outside air from the exterior of the
structure to the fireplace. The house vent should be
installed on the exterior of the structure. It must not
draw air from attic spaces, garage spaces, or other
areas that may contain combustible fumes.

The outside air kit inlet thimble should be positioned

at least 4 ft above the ground level, in a manner that
will not allow snow, leaves, etc. to block the inlet.

15. Install the Fan Kit

An optional fan kit, Model # FK-200 is available for the

HST-38 Series fireplace. Detailed installation
instructions are provided with the FK-200 Fan Kit.

A 110 volt AC switch electrical service must be

connected to the fan kit system by a licensed
electrician. See Figures 14-15 for the wiring diagram
and fan mounting illustration.

Note: 

An HST-38 series fireplace installed in a

manufactured home requires 6 in. duct for outside

WARNING!

All electrical wiring and connections must con-
form to local codes and/or with the National
Electric Code, ANSI/NFPA No. 70-(current). All
electrical connections must be made by a li-
censed electrician.

Figure 14 - Blower Wiring

Figure 15 - Fan Mount

Note: 

A 12 in. x 12 in. hole must be provided in the

adjacent finished wall to access the FK-200 Fan
Kit. See Figure 3, Framing the Fireplace.

Note: 

The electrical junction box is mounted on

the fan.

Summary of Contents for HST-38ND

Page 1: ... can cause injury 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 HST38 HST 38ND WOODBURNING FIREPLACE Note An arrow found in the text signifies change in content ...

Page 2: ...elated 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 g...

Page 3: ...e 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 F...

Page 4: ... be maintained at all times The illustrations and diagrams used throughout these installation instructions are not drawn to scale Figure 1 Typical Fireplace System B DESCRIPTION OF THE FIREPLACE SYSTEM A LISTINGS AND CODE APPROVALS 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 ...

Page 5: ...TK53B1 Trim Kit Catalog Description HST 38 Fireplace with Integral Grate Outside Air Kit and Hearth Protection Strips AK 225 Outside Air Kit included with Fireplace GDA 175BK Cabinet Style Glass Doors Black Finish GDA 175PB Cabinet Style Glass Doors Polished Brass Finish HX3 Hearth Extension GR17 Integral Grate included with Fireplace TK53B1 Trim Kit Polished Brass FK 200 Fan Kit ...

Page 6: ...6 27847 Rev H 08 04 HST 38 SERIES INSTALLATION INSTRUCTIONS Fireplace Dimensions AK 225 Outside Air Kit ...

Page 7: ... Chimney Section 48 in long SL3 Chimney Stabilizer SL315 Chimney Offset Return 15 degree SL330 Chimney Offset Return 30 degree FS338 Firestop Straight FS339 Firestop 15 degree FS340 Firestop 30 degree AS8 SL300 Straight Attic Insulation Shield 24 in JB877 Chimney Joint Band CB876 Chimney Bracket RF370 Roof Flashing Flat to 6 12 Pitch RF371 Roof Flashing 6 12 to 12 12 Pitch TR344 Round Termination ...

Page 8: ...AS8 Straight Attic Insulation Shield Chimney Sections Firestop Spacer JB877 Joint Band A Actual length B Effective length length of chimney part after it has been snapped to another 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 ...

Page 9: ...CTIONS LDS33 3 ft x 3 ft LDS46 4 ft x 6 ft Decorative Shroud TR344 Round Termina tion Cap TR342 Round Telescoping Termination Cap ST375 Square Termination Cap TS345 TS345P Square Termination Cap CAK4A Chimney Air Kit CT35 Chase Top TCT375 Terra Cotta Cap ...

Page 10: ... see through fireplace installations are more susceptible to smoke spillage than others Rooms of greatly unequal air volumes that are separated by a see through fireplace rooms with cathedral ceilings and rooms connected by long passageways will create conditions where unequal air pressures will cause a see through fireplace to vent improperly Glass doors may have to be operated in the closed posi...

Page 11: ...his fireplace will fit a framed opening of 38 3 4 in wide x 38 1 2 in tall The finished cavity depth must be no less than 21 1 4 in Figure 3 shows a typical framing using 2 x 4 lumber 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 ...

Page 12: ... your fireplace location the chimney construction and necessary clearances must be considered The fireplace system and chimney components have been tested to provide flexibility in construction The following figures are the minimum distances from the base of the fireplace 1 Minimum overall straight height 14 5 ft 2 Minimum height with offset return 16 ft 3 Maximum height 90 ft 4 Maximum chimney le...

Page 13: ...ly is measured from the base of the fireplace to the top of the starter collar Example Your A dimension from Figure 5 is 14 1 2 in Using Table 1 the dimension closest to but not less than 14 1 2 in is 14 5 8 in using a 30 deg offset return It is then determined from the table that you would need 33 in Dimension B between the offset and return The chimney components that best fit your application a...

Page 14: ...en Foot Rule This rule states 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 ...

Page 15: ...ns for framing on pages 10 12 Slide the fireplace into position Be sure to provide the minimum air clearance at the sides of the fireplace assembly 2 Place the Protective Metal Hearth Strips Included with your fireplace you will find metal hearth strips measuring approximately 28 in x 4 in These strips are used to provide added protection where the fireplace and the hearth extension meet Slide the...

Page 16: ...e stop 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 8 5 Install 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 f...

Page 17: ...d unsupported chimney length limitations that are given on page 12 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 lock...

Page 18: ...ection and the roof 11 Assemble the Chimney Sections Through the Roof Continue to add chimney sections through the roof opening maintaining at least a 2 in air space 12 Install the Roof Flashing If a roof flashing is to be used install the roof flashing appropriate to the roof pitch and install a round termination cap following the instructions shipped with the cap For chase installations you can ...

Page 19: ... in a manner that will not allow snow leaves etc to block the inlet 15 Install the Fan Kit An optional fan kit Model FK 200 is available for the HST 38 Series fireplace Detailed installation instructions are provided with the FK 200 Fan Kit A 110 volt AC switch electrical service must be connected to the fan kit system by a licensed electrician See Figures 14 15 for the wiring diagram and fan moun...

Page 20: ...gas log lighter or a decorative gas appliance with a maximum input of 100 000 BTU hour incorporating an automatic gas shutoff device and complying with the Standard for Decorative Gas Appliances for Installation in Vented Fireplaces ANSI Z21 60 The decorative gas appliance should be installed in accordance with the National Fuel Gas Code ANSI Z223 1 1980 The side refractories are designed to allow...

Page 21: ...e fireplace from both radiant heat and sparks The construction of and materials used for a hearth extension are shown in Figures 17 18 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 22: ... 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 noncombustib...

Page 23: ...an insulated false ceiling at the 8 level above the fireplace assembly This reduces heat loss through the chase 4 In cold climates the walls of the chase should be insulated to the level of the false ceiling as shown in Figure 21 This will help reduce heat loss from the home around the fireplace A chase is a vertical boxlike enclosure built around the chimney and fireplace A chase may be construct...

Page 24: ...Cap a Install the chimney sections up through the chase enclosure When using a TR344 round termination cap the uppermost top section of pipe must extend 6 in above the top of the chase collar to allow installation of the storm collar and termination cap See Figure 22 b For installations utilizing a TR342 telescoping round termination cap the uppermost chimney section must be below the top of the c...

Page 25: ...and enclosure To protect against the effects of corrosion on those parts exposed to the weather we recommend that the chase top and termination cap be painted with a rust resistant paint Figure 24 Installing an ST375 Square Termination Cap Figure 25 Installing a TS345 TS345P Square Termination Cap c For installations utilizing an ST375 square termination cap the last chimney section must not be mo...

Page 26: ...r 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 and listed fo...

Page 27: ...ave 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 ...

Page 28: ...he top of the woodpile for protection from rain and snow Avoid covering the sides and ends completely Doing so may trap moisture from the ground and impede air circulation The problems with burning wet unseasoned wood are twofold First you will receive less heat output from wet wood because it requires energy in the form of heat to evaporate the water trapped inside This is wasted energy that shou...

Page 29: ...imney 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 ...

Page 30: ...ccurred 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 openings to stop dirt and soot from entering the room c Remove the termination cap or housing t...

Page 31: ...rewood 27 Flue 26 Framing 11 Framing the Fireplace 11 Fuel 27 G Gas Codes 20 26 General Information 26 Glass Doors 22 27 Grate 5 27 H Hearth Extension 21 Positioning 22 Hearth Strips 15 I Installation Fireplace 15 Insulation Shield 8 17 J Joint Band 8 L Leveling the Fireplace 15 Listings and Code Approvals 4 Locations 10 M Maintenance 30 Mantel 11 12 22 Material Sealant 22 Metal Hearth Strips 15 M...

Page 32: ...he first six 6 months after installation HEAT N GLO shall at its option replace or repair the Glass Doors and any electrical components if operation is faulty This does not include Glass panels broken during shipment misuse or careless handling After the first six 6 months HEAT N GLO will sell to you FOB its factory replacement parts at the current list price but HEAT N GLO SHALL NOT BE RESPONSIBL...

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