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1NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

MODELS

INSTALLATIONINSTRUCTIONS

RETAIN THESE INSTRUCTIONSFOR FUTURE REFERENCE

FOR YOUR SAFETY: Do not store or use gasolineor other flammable vapors or liquids in the vicin-ity of this or any other appliance.

FOR YOUR SAFETY: What to do if you smell gas:

• DO NOT light any appliance.• DO NOT touch any electrical switches.• DO NOT use any phone in your building.• Immediately call your gas supplier from a

neighbor’s phone. Follow your gas suppliersinstructions.

• If your gas supplier cannot be reached, call thefire department.

Installation and service must be performed by aqualified installer, service agency or the gassupplier.

POUR VOTRE SÉCURITÉ: Ne pas entreposer ni utiliserd'essence ni d'autre vapeurs ou liquides inflammablesdans le voisinage de cet appareil ou de tout autreappareil.

POUR VOTRE SÉCURITÉ: Que faire si vous sentez uneodeur de gaz:

• Ne pas tenter d'allumer d'appareil.• Ne touchez à aucun interrupteur. Ne pas vous servir

des téléphones se trouvant dans le batiment oùvous vous trouvez.

• Evacuez la piéce, le bâtiment ou la zone.• Appelez immédiatement votre fournisseur de gaz

depuis un voisin. Suivez les instructions dufournisseur.

• Si vous ne pouvez rejoindre le fournisseur de gaz,appelez le service dos incendies.

L'installation et service doit être exécuté par un qualifiéinstalleur, agence de service ou le fournisseur de gaz.

AVERTISSEMENT: ASSUREZ-VOUS DE BIEN SUIVRELES INSTRUCTIONS DONNÉ DANS CETTE NOTICE POURRÉDUIRE AU MINIMUM LE RISQUE D'INCENDIE OUPOUR ÉVITER TOUT DOMMAGE MATÉRIEL, TOUTEBLESSURE OU LA MORT.

WARNING: IF THE INFORMATION IN THIS MANUALIS NOT FOLLOWED EXACTLY, A FIRE OR EXPLO-SION MAY RESULT CAUSING PROPERTY DAM-AGE, PERSONAL INJURY OR LOSS OF LIFE.

DESIGNER DIRECT VENTMULTI-OPEN

VENTED GAS FIREPLACE HEATERS - DIRECT VENT MODELSP/N 800,021M REV. A 01/2002

WH Report No. J20006712

This appliance may be installed as an OEM instal-lation in a manufactured home (USA only) ormobile home and must be installed in accordancewith the manufacturer's instructions and the manu-factured home construction and safety standard,Title 24 CPF, Part 3280 or Standard for Installationin Mobile Homes, CAN/CSA Z240 MH.This appliance is only for use with the type(s) ofgas indicated on the rating plate. A conversionkit is supplied with the appliance.

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Millivolt Models -Millivolt models come standard with themanually-modulated gas valve; flame ap-pearance and heat output can be con-trolled at the gas valve.Input of millivolt models is shown in thefollowing table:

These appliances comply with National SafetyStandards and are tested and listed by WarnockHersey (Report No. J20006712) to ANSIZ21.88-2000 (in Canada, CSA-2.33-2000), andCAN/CGA-2.17-M91 in both USA and Canada,as vented gas fireplace heaters.

These appliances are listed by WarnockHersey for installation in bedrooms andmobile homes.

Installation must conform to local codes. In theabsence of local codes, installation must com-ply with the current National Fuel Gas Code,ANSI Z223.1. (In Canada, the current CAN-1B149 installation code.) Electrical wiring mustcomply with the National Electrical Code ANSI/NFPA 70 - (latest edition). (In Canada, thecurrent CSA C22-1 Canadian Electrical Code.)For additional installation requirements whenthese appliances are to be installed as an OEMinstallation in a manufactured home, refer tothe manufactured home construction and safetystandard, Title 24, Part 3280 CFP or standardfor Installation in Mobile Homes, CAN/CSAZ240MH.

TABLE OF CONTENTS

Packaging ........................................ page 2

Introduction ..................................... page 2

General Information ......................... page 2

Location .......................................... page 3

Appliance and Vent Clearances ....... page 4

Vent Termination Clearances ........... page 4

Typical Installation Sequence .......... page 5

Detailed Installation Steps ............... page 5

Step 1. Framing ............................. page 5

Fireplace Specifications ................... page 8

Step 2. Routing Gas Line ............... page 9

Step 3. Install the Venting System . page 9

Vertical Termination Systems .......... page 10

Vent Section Length Chart ............... page 10

Vertical Vent Tables and Figures ..... page 13

Horizontal Termination System........ page 15

Horizontal Vent Tables and Figures . page 17

Venting Using Flexible Vent Pipe ..... page 20

Step 4. Millivolt Circuit Wiring ....... page 21

Step 5. Connecting Gas Line ......... page 21

Step 6. Installing Logs ................... page 22

Step 7. Checking Unit Operation ..... page 22

Step 8. Installing Glass Enclosure Panels

.......................................... page 22

Step 9. Burner Adjustments ........... page 23

Step 10. Hood Installation ............... page 23

Finishing Requirements ................... page 23

Cold Climate Insulation ................... page 24

Installation Accessories ................... page 24

Gas Conversion Kits .................. page 26

TYPICAL INSTALLATION

DO NOT ATTEMPT TO ALTER OR MODIFYTHE CONSTRUCTION OF THE APPLIANCE ORITS COMPONENTS. ANY MODIFICATION ORALTERATION MAY VOID THE WARRANTY,CERTIFICATION AND LISTINGS OF THIS UNIT.

INTRODUCTION

These vented gas fireplace heaters are sealedcombustion, air circulating gas fireplaces de-signed for residential applications. These ap-pliances must be installed with the SecureVent™ and /or Secure Flex™ vent systemsrouted to the outside atmosphere.

These millivolt appliances are designed tooperate on natural or propane gas. They comefrom the factory setup for natural gas. A naturalto propane gas conversion kit is supplied withthe fireplace with conversion instructions pro-vided on page 26. A millivolt gas control valvewith piezo ignition system provides safe andefficient operation.

PACKAGINGThe assembled vented gas fireplace heater ispackaged with:1- one log set, with one plastic bag of vermicu-

lite, is packaged in a carton located withinthe firebox.

2- one plastic bag of glowing embers and oneplastic bag of decorative volcanic stoneis located in the bottom compartment.

3 - one envelope containing the literaturepackage which consists of the homeowner'smanual, installation instructions, warranty,LP/Propane conversion kit and 8 (DMSTNM-2), 4 (DMPFNM-2) nailing flanges; envelopeis located in the control area.

4 - one vent restrictor to be applied as shown onpage 9; restrictor is taped to the envelope.

5 - two hoods (DMSTNM-2), or three hoods(DMPFNM-2) taped to the top of the fireplace.

GENERAL INFORMATION

Note: Installation and repair should be per-formed by a qualified service person. The appli-ance should be inspected annually by a quali-fied professional service technician. More fre-quent inspections and cleanings may be re-quired due to excessive lint from carpeting,bedding material, etc. It is imperative that thecontrol compartment, burners and circulatingair passage ways of the appliance be kept clean.

S'assurer que le brùleur et le compartiment descommandes sont propres. Voir les instruc-tions d'installation et d'utilisation quiaccompagnent l'appareil.

Provide adequate clearances around air open-ings and adequate accessibility clearance forservice and proper operation. Never obstructthe front, back and/or side viewing surfaces ofthe appliance.

These appliances are designed to operate on naturalor propane gas only. The use of other fuels orcombination of fuels will degrade the performanceof this system and may be dangerous.

This installation manual will help you achieve asafe, efficient and dependable installation foryour appliance and vent system. Please readand understand these instructions be-fore beginning your installation.

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LOCATIONIn selecting the location, the aesthetic and func-tional use of the appliance are primary concerns.However, vent system routing to the outsideatmosphere and access to the fuel supply arealso important. Consideration should be given totraffic ways, furniture, draperies, etc., due to highsurface temperatures (Figure 2 ). The locationshould also be free of electrical, plumbing orother heating/air conditioning ducting.These direct vent appliances are uniquely suitedfor installations requiring a utility shelf posi-tioned directly above the fireplace. Utility shelveslike these are commonly used for locatingtelevision sets and decorative plants.To achieve the lowest possible shelf height, usethe alternative rear vent outlet. Do not insulatethe space between the appliance and thearea above it. See Figure 3 on page 4. Theminimum height from the base of the appli-ance to the underside of combustible materialsused to construct a utility shelf in this fashion isshown in the table in Figure 3 on page 4. Theweight of the utility shelf and anything placedupon it may not be supported by the appliancein anyway.

Table 1

Test gage connections are provided on thefront of the millivolt gas control valve (iden-tified IN for the inlet and OUT for the mani-fold side).

Minimum inlet gas pressure to these appli-ances is 5.0 inches water column (1.24 kPa)for natural gas and 11.0 inches water column(2.74 kPa) for propane for the purpose of inputadjustment.

Maximum inlet gas supply pressure to these appli-ances is 10.5 inches water column (2.61 kPa) fornatural gas and 13.0 inches water column (3.23kPa) for propane.

Do not use these appliances if any part has beenunder water. Immediately call a qualified,professional service technician to inspect theappliance and to replace any parts of the con-trol system and any gas control which havebeen under water.

Ne pas se servir de cet appareil s'il a étéplongé dans l'eau, complètement ou enpartie. Appeler un technicien qualifié pourinspecter l'appareil et remplacer toute partiedu système de contrôle et toute commandequi ont été plongés dans l'eau.

The millivolt appliances are manually controlledand feature a spark ignitor (piezo) that allowsthe appliance's pilot gas to be lit without the useof matches or batteries. This system will stillfunction in the event of a power outage.

Installations at Altitudes of 0 to 4500 ft.-Units are tested and approved for elevationsof 0 to 4500 feet (0 to 1372 meters).

Installations at Altitudes above 4500 ft.-For elevations above 4500 feet (1372meters), install the unit according to theregulations of the local authorities havingjurisdiction and, in the USA, the latest editionof the National Fuel Gas Code (ANSI Z223.1)or, in Canada, the latest edition of theCAN1-B149.1 and .2 codes.

WARNING: FAILURE TO COMPLY WITHTHE INSTALLATION AND OPERATING IN-STRUCTIONS PROVIDED IN THIS DOCU-MENT WILL RESULT IN AN IMPROP-ERLY INSTALLED AND OPERATING AP-PLIANCE, VOIDING ITS WARRANTY.ANY CHANGE TO THIS APPLIANCE AND/OR ITS OPERATING CONTROLS IS DAN-GEROUS. IMPROPER INSTALLATIONOR USE OF THIS APPLIANCE CAN CAUSESERIOUS INJURY OR DEATH FROM FIRE,BURNS, EXPLOSION OR CARBON MON-OXIDE POISONING.

This appliance may be installed as an OEMinstallation in a manufactured home (USAonly) or mobile home and must be installedin accordance with the manufacturer's in-structions and the Manufactured Home Con-struction and Safety Standard, Title 24 CPF,Part 3280 or Standard for Installation inMobile Homes, CAN/CSA Z240 MH.This appliance is only for use with the type(s)of gas indicated on the rating plate. A con-version kit is supplied with the appliance.

Cet appareil peut être installé comme dumatériel d'origine dans une maisonpréfabriquée (É.-U. seulement) ou mobileet doit être installé selon les instructions dufabricant et conformément à la norme Manu-factured Home Construction and Safety Stan-dard, Title 24 CPF, Part 3280 ou à la normeCAN/CSA Z240 Série MM, Maisons Mobiles.

Cet appareil doit être utilisé uniquement avecles types de gaz indiqués sur la plaquesignalétique. Une trousse de conversion estfournie avec l'appareil.

These appliances must be isolated from thegas supply piping system (by closing theirindividual manual shut-off valve) during anypressure testing of the gas supply piping sys-tem at test pressures equal to or less than ¹⁄₂psig (3.5 kPa).

These appliances and their individual shut-offvalves must be disconnected from the gassupply piping system during any pressure test-ing of that system at pressures in excess of ¹⁄₂psig (3.5 kPa).

These appliances must not be connected to achimney or flue serving a separate solid fuelburning appliance.

Carbon Monoxide Poisoning: Early signs ofcarbon monoxide poisoning are similar tothe flu with headaches, dizziness and/ornausea. If you have these signs, obtain freshair immediately. Turn off the gas supply tothe appliance and have it serviced by aqualified professional, as it may not be op-erating correctly.

WARNING: CHILDREN AND ADULTSSHOULD BE ALERTED TO THE HAZARDSOF HIGH SURFACE TEMPERATURES. USECAUTION AROUND THE APPLIANCE TOAVOID BURNS OR CLOTHING IGNITION.YOUNG CHILDREN SHOULD BE CARE-FULLY SUPERVISED WHEN THEY ARE INTHE SAME ROOM AS THE APPLIANCE.

WARNING: DO NOT PLACE CLOTHINGOR OTHER FLAMMABLE MATERIALSON OR NEAR THIS APPLIANCE.

AVERTISSEMENT: SURVEILLER LESENFANTS. GARDER LES VÊTEMENTS,LES MEUBLES, L'ESSENCE OU AUTRESLIQUIDES À VAPEUR INFLAMMABLESÀ COTE DE L'APPAREIL.

Maximum manifold pressure is 3.5 in. w.c.(0.87 kPa) for natural gas and 10 in. w.c.(2.49 kPa) for LP/Propane gas.

Table 1 shows the units' gas orifice size forthe elevations indicated.


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APPLIANCE AND VENT CLEARANCESThe appliance is approved with zero clearance tocombustible materials on all sides (as detailed inTable 2), with the following exception: When theunit is installed with one side flush with a wall,the wall on the other side of the unit must notextend beyond the front edge of the unit. Inaddition, when the unit is installed in the middleof a room, the side walls surrounding the unitmust not extend beyond the front or rear edgeof the unit. See Figure 2.

The appliance should be mounted on a fullysupported base extending the full width anddepth of the unit. The appliance may be locatedon or near conventional construction materi-als. However, if installed on combustible mate-rials, such as carpeting, vinyl tile, etc., a metalor wood barrier covering the entire bottomsurface must be used.

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VENT TERMINATION CLEARANCESThese instructions should be used as aguideline and do not supersede local codesin any way. Install vent according to localcodes, these instructions, the current Na-tional Fuel Gas Code (ANSI-Z223.1) in theUSA or the current standards of CAN/CGA-B149.1 and -B149.2 in Canada. For addi-tional installation requirements when theseappliances are to be installed as an OEMinstallation in a manufactured home, refer tothe manufactured home construction andsafety standard, Title 24, Part 3280 CFP orstandard for Installation in Mobile Homes,CAN/CSA Z240MH.


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A = clearance above grade, veranda, porch, deck, or balcony12 inches (30.5 cm) minimum

B = clearance to window or door that may be opened12 inches (30.5 cm) minimum

C = clearance to permanently closed window - recommendedto prevent condensation on window

U.S. - 9 inches (22.8 cm) minimumCanada - 12 inches (30.5 cm) minimum

D = vertical clearance to ventilated soffit located above theterminal (if any part of the soffit is within a horizontaldistance of 18 in. (45.7 cm) from the center line of theterminal) - see detail D above

18 inches (45.7 cm) minimum for all materialsexcept vinyl clad soffit;24 inches (61.0 cm) minimum for vinyl clad soffit.

E = vertical clearance to unventilated soffit12 inches (30.5 cm) minimum for all materialsexcept vinyl clad soffit;18 inches (45.7 cm) minimum for vinyl clad soffit.

F = clearance to outside corner5 inches (12.7 cm) minimum

G = clearance to inside corner6 inches (15.2 cm) minimum

H = not be installed above a gas service meter/regulatorassembly within 3 feet (91.4 cm) horizontally from thecenter line of the gas service regulator.

I = clearance to gas service regulator vent outlet3 feet (91.4 cm) minimum

J = non-mechanical inlet (includes combustion air intakefor a direct vent appliance or any other inlet not provid-ing ventilation air for living spaces):

• vent termination may not be located in an areabounded by lines drawn 9 inches to the left andright of the non-mechanical inlet cap sides(12 inches in Canada) and extending 3 feet aboveand below the termination

Note: Clearances are measured from the nearestadjacent vent point where exhaust gases exit theflue (vent side to vent side).

K = clearance to mechanical air supply (outside air inlet usedto provide ventilation air to living spaces within thestructure):at least 3 ft. (91.4 cm) above inlet when vent within 10ft. of inlet - U.S.at least 6 ft. (182.8 cm) - Canada

L = clearance above paved sidewalk or paved drivewaylocated on public property

7 feet (2.1 m) minimum

Note: A vent shall not terminate directly above a side-walk or paved driveway which is located between two (2)single family dwellings and serves both dwellings.

M = clearance under veranda, porch, deck, or balcony wherefully open on a minimum of two (2) sides beneath thefloor

12 inches (30.5 cm) minimum

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FIREPLACE SPECIFICATIONS


VENT RESTRICTOR INSTALLATION(SIDE VENT)

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Select Venting System - Horizontal or Vertical

With the appliance secured in framing, deter-mine vent routing and identify the exteriortermination location. The following sectionsdescribe vertical (roof) and horizontal (exteriorwall) vent applications. Refer to the sectionrelating to your installation. A list of approvedventing components is shown in the tables onpages 24 and 25.

WARNING:FAILURE TO REINSTALL AND SE-CURELY TIGHTEN COVER PLATESCREWS COULD RESULT IN LEAKAGEOF FLUE PRODUCTS INTO THE LIVINGSPACE. VENT COVER PLATE AND VENTSEAL CAP MUST REMAIN SECURELYINSTALLED ON UNUSED VENT COL-LAR. FAILURE TO DO SO COULD RE-SULT IN LEAKAGE OF FLUE PRODUCTSINTO LIVING SPACE.

Preparing the Appliance Vent Collar

Each of the unit's two vent collars are sealedwith a cover plate, and a seal cap. The coverplate and seal cap must be removed from thevent collar being used. Refer to figure 13 fortop vent usage and figure 14 for side, and thefollowing steps to prepare the appropriatecollar for use.From the vent collar being used, remove thetwo screws securing the vent seal cap. Twistthe cap counterclockwise. Pull it away fromthe unit and discard, along with the piece ofinsulation.When the top vent collar is being used, frominside the firebox, loosen the two screws in thekeyhole slots of the cover plate and remove theremaining two cover plate securing screws. Re-move and discard the cover plate. Reinstall andsecurely tighten all four screws.When the side vent collar is being used, frominside the firebox, loosen the two screws in thekeyhole slots of the cover plate and remove theremaining two cover plate securing screws. Re-move and discard the cover plate. Reinstall andsecurely tighten all four screws.

Preparing the Appliance Top or Side VentOutlet when vertically terminating the ventsystem above the roof

Install a vent restrictor (provided) in the appli-ance top flue outlet as shown in Figure 15 orside flue outlet as shown in Figure 16 whenvertically terminating the vent system abovethe roof. It may be installed either from insideor outside the unit, in the inner fireplace collar.It is press-fitted in place.

Step 3. INSTALL THE VENT SYSTEM

General InformationThese instructions should be used as a guide-line and do not supersede local codes in anyway. Install vent according to local codes,these instructions, the current National FuelGas Code (ANSI-Z223.1) in the USA or thecurrent standards of CAN/CGA-B149.1 and -B149.2 in Canada. For additional installa-tion requirements when these appliances areto be installed as an OEM installation in amanufactured home, refer to the manufac-tured home construction and safety standard,Title 24, Part 3280 CFP or standard for Instal-lation in Mobile Homes, CAN/CSA Z240MH.

These fireplaces are designed, testedand listed for operation and installationonly with Secure Vent™ (SV 4.5) DirectVent System Components or SecureFlex™ Flexible Vent Components manu-factured by Security Chimneys Interna-tional. These approved vent system com-ponents are labeled for identification.DO NOT use any other manufacturer'svent components with these appli-ances. These fireplaces must be venteddirectly to the outside.

The vent system must not service multipleappliances, and must never be connected to aflue serving a solid fuel burning appliance. Thevent pipe is tested to be run inside an enclo-sure (such as a chase). There is no require-ment for inspection openings in the enclosureat any of the joints in the vent pipe.

Step 2. ROUTING GAS LINE

Route a ¹⁄₂" (13 mm) gas line as shown inFigure 9 (DMSTNM-2), 10 (DMPFNM-2) onpage 7. Gas lines must be routed, constructedand made of materials that are in strict accor-dance with local codes and regulations. Allappliances are factory-equipped with a flexiblegas line connector and ¹⁄₂ inch shutoff valve.(See step 5 on page 21).


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TOTAL

QTY

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5.4 573.0 1 0 0 0 0 1

9 57.0 2 0 0 0 0 2

5.01 578.0 0 1 0 0 0 1

51 52.1 1 1 0 0 0 2

5.91 526.1 2 1 0 0 0 3

12 57.1 0 2 0 0 0 2

5.22 578.1 0 0 1 0 0 1

5.52 521.2 1 2 0 0 0 3

5.13 526.2 0 3 0 0 0 3

5.43 578.2 0 0 0 1 0 1

5.73 521.3 1 1 1 0 0 3

5.34 526.3 0 2 1 0 0 3

54 57.3 0 0 2 0 0 2

5.64 578.3 0 0 0 0 1 1

5.94 521.4 1 0 2 0 0 3

15 52.4 1 0 0 0 1 2

5.55 526.4 0 1 2 0 0 3

75 57.4 0 0 1 1 0 2

66 52.5 0 2 2 0 0 4

5.76 526.5 0 0 3 0 0 3

96 57.5 0 0 0 2 0 2

27 6 1 0 3 0 0 4

5.37 521.6 1 0 0 2 0 3

5.97 526.6 0 1 0 2 0 3

18 57.6 0 0 0 1 1 2

09 5.7 0 2 1 0 1 4

5.19 526.7 0 0 2 0 1 3

39 57.7 0 0 0 0 2 2

69 8 1 0 1 2 0 4

5.79 521.8 1 0 0 0 2 3

201 5.8 2 0 0 0 2 45.301 526.8 0 0 0 3 0 3

801 9 1 0 0 3 0 4

411 5.9 0 2 0 0 2 4

711 57.9 1 0 5 0 0 6

5.811 578.9 1 1 0 3 0 5

621 5.01 0 0 1 3 0 4

5.031 578.01 1 0 1 3 0 5

531 52.11 0 0 6 0 0 6

831 5.11 0 0 0 4 0 4

5.931 526.11 0 0 0 0 3 3

5.241 578.11 1 0 0 4 0 5

TRAHCHTGNELNOITCESTNEVnoitceSlanimoN)sehcni(htgneL 6 21 42 63 84

TOTAL

QTY

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051 5.21 0 1 0 0 3 4

5.451 578.21 1 1 0 0 3 5

5.061 573.31 0 2 0 0 3 5

5.271 573.41 0 0 0 5 0 5

771 57.41 1 0 0 5 0 6

381 52.51 0 1 0 5 0 6

681 5.51 0 0 0 0 4 4

5.091 578.51 1 0 0 0 4 5

5.691 573.61 0 1 0 0 4 5

5.502 521.71 0 1 1 5 0 7

702 52.71 0 0 0 6 0 6

5.112 526.71 1 0 0 6 0 7

5.712 521.81 0 1 0 6 0 7

5.922 521.91 0 0 1 6 0 7

5.232 573.91 0 0 0 0 5 5

732 57.91 1 0 0 0 5 6

5.142 521.02 0 0 0 7 0 7

642 5.02 1 0 0 7 0 8

252 12 0 1 0 7 0 8

462 22 0 0 1 7 0 8

672 32 0 0 0 8 0 8

972 52.32 0 0 0 0 6 6

5.082 573.32 1 0 0 8 0 9

5.382 526.32 1 0 0 0 6 7

5.982 521.42 0 1 0 0 6 7

5.103 521.52 0 0 1 0 6 7

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Figure 17

Vertical (Straight) Installation

Determine the number of straight vent sectionsrequired. 4 ¹⁄₂" (114 mm), 10 ¹⁄₂" (267 mm), 22¹⁄₂" (572 mm), 34 ¹⁄₂" (876 mm) and 46 ¹⁄₂"(1181 mm) net section lengths are available.Plan the vent lengths so that a section joint doesnot occur within the space defined by ceilingjoists or roof rafters. Refer to the Vent SectionLength Chart.

VERTICAL TERMINATION SYSTEMS (ROOF)

Figure 17, and Figures 29 through 33 onpages 13 and 14 and their associated VerticalVent Tables illustrate the vertical venting con-figurations that are allowed to be used withthese appliances. Secure Vent pipe applica-tions are shown in these figures; Secure Flexpipe may also be used. See page 20. A VerticalVent Table summarizes each system’s mini-mum and maximum vertical and horizontallength values that can be used to design andinstall the vent components in a variety ofapplications.Both these vertical vent systems terminatethrough the roof. In the USA, the minimumvent height above the roof and/or adjacentwalls is specified in ANSI Z223.1(latest edi-tion); in Canada, by the current CAN-1 B149installation code. It is also specified in majorbuilding codes. Always consult your localcodes for specific requirements. A generalguide to follow is the Gas Vent Rule (refer toFigure 4 on page 4).

Vertical (Offset) InstallationAnalyze the vent routing and determine thenumber of vent sections and elbows required.Refer to Vertical Vent Figures and Tables onpage 13 and 14 to select the type of verticalinstallation desired. Vent sections are availablein net lengths of 4 ¹⁄₂" (114 mm), 10 ¹⁄₂" (267mm), 22 ¹⁄₂" (572 mm), 34 ¹⁄₂" (876 mm) and 46¹⁄₂" (1181 mm). Refer to the Vent SectionLength Chart above for an aid in selectinglength combinations.

Elbows are available in 45° and 90° configu-rations. Refer to Figure 24 on 12 for theSV4.5E45 and SV4.5E90 elbow dimensionalspecifications.Where required, a telescopic vent section(SV4.5LA) may be used to provide the installerwith an option in installing in tight and con-fined spaces or where the vent run made up offixed length pieces develops a joint in a unde-sirable location, or will not build up to therequired length.


To attach a vent component to the appliancecollar, align the dimpled end over the collar,adjusting the radial alignment until the fourlocking dimples are aligned with the inlet of thefour inclined channels on the collar (refer toFigure 23). Push the vent component againstthe collar until it fully engages, then twist thecomponent clockwise, running the dimplesdown and along the incline channels until theyseat at the end of the channels.

10¹⁄₂” Min.(267 mm)

10¹⁄₂” Min.(267 mm)

First VentComponentAlign the dimple (four places)with the opening of the lockingincline channel on appliancecollar. Twist vent componentclockwise to engage and seal.

LockingIncline Channel

Dimple

Appliance collar

Vent / Appliance CollarConnection

Align the dimple (four places) of theupper vent section with the openingof the locking incline channel on thelower vent section. Twist ventcomponent clockwise to engage andseal until arrow and dimple align.

LockingIncline Channel

Dimple

ArrowConnectedVent Sections

Vent / Vent SectionConnection

Arrow

Arrow

D1. Install firestop/spacer at ceiling betweenstories - Install a firestop/spacer (catalog no.96K87 - Secure Vent; catalog no.19M41 -Secure Flex) at the bottom side of the ceiling tothe ceiling joists. Route the vent sectionsthrough the framed opening and secure thefirestop/spacer with appropriate fasteners ateach corner.Remember to maintain 1" (25 mm) clearancebetween vertical chimney sections and com-bustibles, framing members, and attic orceiling insulation.

D2. Install firestop thimble at the ceiling toroof location - Position appropriate firestopthimble (see thimble table on page 24) at thebottom side of ceiling and secure temporarilywith two appropriate fasteners. Attach perma-nently, using at least two more fasteners, aftervent sections have been assembled throughthe firestop thimble and after any necessaryadjustments have been made.

Figure 18

Figure 19

Figure 20

FIGURE 21

Ensure the thimble penetrates the roof open-ing. The thimble must extend completelythrough the ceiling or roof cavity to the outer-most plane of the roof. Use thimble extensionSVTE26 when the distance between the outsideof the roof and the inside of the ceiling exceedsthe height of the firestop thimble. The thimbleprovides for zero clearances to combustiblesand must be used at the ceiling/roof in manu-factured homes with Secure Vent double wallvent sections. Maintain 1 in. (25.4 mm) clear-ance between the thimble and the outer pipeof the secure vent chimney system. See Fig-ure 21 for pitched roofs or flat roofs with flatceilings or Figure 22 for pitched roofs withcathedral ceilings.

FIGURE 22

Note: Trim Thimble/Extension To Desired LengthAnd Pitch At The Roof Line

14" Min.

Pitched Roof

Pitched Roof

Bow Roof

14" Min.

Outer Pipe OfChimney


Outer Pipe OfChimney14" Min.

FirestopThimble

Extension

13"

FirestopThimble

FirestopThimble

ThimbleSV-FSTFE

14" Min.


Use correct firestopthimble depending on the

pitch of the interiorceiling.

Note: Regular Thimble(SV-FSTFE) Can Be Used

If A Header Is ConstructedAt This Point

The SV4.5LA Telescopic Vent Section has aneffective length of from 1 ¹⁄₂" (38 mm) to 7 ¹⁄₂"(191 mm). The SV4.5LA is fitted with a lockinginclined channel end (identical to a normal ventsection component) and a plain end with 3 pilotholes. Slip the plain end over the locking channelend of a standard SV4.5 vent component therequired distance and secure with three screws.Maintain a minimum 1" (25 mm) clearance tocombustible materials for all vertical elements.Clearances for all horizontal elements are 3"(76 mm) on top, 1" (25 mm) on sides and 1"(25 mm) on the bottom.

A. Frame ceiling opening - Use a plumbline from the ceiling above the appliance tolocate center of the vertical run. Cut and/orframe an opening, 10¹⁄₂" x 10¹⁄₂" (267mm x267mm) inside dimensions, about this cen-ter mark (Figure 18).

The unitized design of the Secure Vent com-ponents will engage and seal both the inner andouter pipe elements with the same procedure.Sealant and securing screws are not required.

C. Attach vent components to each other -Other vent sections may be added to the previ-ously installed section in accordance with therequirements of the vertical vent figures andtables. To add another vent component to alength of vent run, align the dimpled end overthe inclined channel end of the previously in-stalled section, adjusting the radial alignmentuntil the four locking dimples are aligned withthe inlets of the four incline channels of theprevious section. Push the vent componentagainst the previous section until it fully en-gages, then twist the component clockwiserunning the dimples down and along the inclinechannels until they seat at the end of thechannels.This seating position is indicated bythe alignment of the arrow and dimple asshown in Figure 20.

B. Attach vent components to appliance -Secure Vent SV4.5 direct vent system compo-nents are unitized concentric pipe compo-nents featuring positive twist lock connec-tions (see Figure 19). All of the appliancescovered in this document are fitted with col-lars having locking inclined channels. Thedimpled end of the vent components fit overthe appliance collar to create the positive twistlock connection.


C

D

��

Framing Dimensions for Roof

Pitch C D

0/12 10¹⁄₂ in. 10¹⁄₂ in.(267 mm) (267 mm)

6/12 10¹⁄₂ in. 12 in.(267 mm) (305 mm)

12/12 10¹⁄₂ in. 17 ³⁄₄ in.(267 mm) (451 mm)

Figure 25

Figure 26

Figure 28

Figure 27

If the vent system extends more than 5' (1.5 m)above the roof flashing, stabilizers may benecessary. Additional screws may be used atsection joints for added stability. Guide wiresmay be attached to the joint for additionalsupport on multiple joint configurations.

G. Continue installation of horizontal/inclinedsections - Continue with the installation of thestraight vent sections in horizontal/inclinedrun as described in Step C. Install supportstraps every 5 ft. (1.52 m) along horizontal/inclined vent runs using conventional plumber’stape. See page 15, Figure 34. It is veryimportant that the horizontal/inclined run bemaintained in a straight (no dips) and slightlyelevated plane in a direction away from thefireplace ¹⁄₄" per foot (20 mm per meter) ofhorizontal vent. Use a carpenter’s level tomeasure from a constant surface and adjustthe support straps as necessary.

SV4.5E90(90° Elbow)

8 ¹⁄₈"(206 mm)

Swivel Joint(360° swivel)

4 ¹³⁄₁₆"(122 mm)

SV4.5E45(45° Elbow)

Swivel Joint(360° swivel)

Figure 24

F. Change vent direction to horizontal/in-clined run - At transition from or to a horizon-tal/inclined run, install the SV4.5E45 andSV4.5E90 elbows in the same manner as thestraight vent sections. The elbows feature atwist section to allow them to be routed aboutthe center axis of their initial collar section toalign with the required direction of the next ventrun element. Twist elbow sections in a clock-wise direction only so as to avoid the possiblityof unlocking any of the previously connectedvent sections. See Figure 24.

It is important to maintain the required clear-ances to combustibles: 1" (25 mm) at allsides for all vertical runs; and 3" (76 mm) atthe top, 1" (25 mm) at sides, and 1" (25 mm)at the bottom for all horizontal/inclined runs.

Figure 23

E. Support the vertical vent run sections -Note - Proper venting support is very impor-tant. The weight of the vent must not be sup-ported by the firplace in any degree.Support the vertical portion of the ventingsystem every 8 feet (2.4m) above the fireplacevent outlet. One method of support is by utiliz-ing field provided support straps (conventionalplumber's tape). Secure the plumber's tape tothe framing members with nails or screws.Loop the tape around the vent, securing theends of the tape to the framing. The tape mustnot be secured directly with a fastener into thevent pipe. See Figure 23.

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K. Install the vertical termination - The finalstep involves installation of the SV4.5VTR Ver-tical Termination. Extend the vent sections tothe height as shown in the "Vertical vent termi-nation section" on page 4. The SV4.5VTR Ver-tical Termination (Figure 28) can be installed inthe exact same fashion as any other SecureVent section. Align the termination over the endof the previously installed section, adjusting theradial alignment until the four locking dimplesof the termination are aligned with the inlets ofthe four incline channels of the last vent section.Push the termination down until it fully en-gages, then twist the termination clockwiserunning the dimples down and along the inclinechannels until they are seated at the end of thechannels.

I. Install the roof flashing - Extend the ventsections through the roof structure. Install theroof flashing over the vent section and posi-tion such that the vent column rises vertically(use carpenters level) (Figure 26 ). Nail alongperimeter to secure flashing or adjust roofingto overlap the flashing edges at top and sidesonly and trim where necessary. Seal the topand both sides of the flashing with waterproofcaulking.

H. Frame roof opening - Identify location forvent at the roof. Cut and/or frame opening perRoof Framing Chart and Figure 25.

J. Install the storm collar - Install the stormcollar, supplied with the flashing, over the vent/flashing joint. See Figure 27. Loosen the stormcollar screw. Slide collar down until it meets thetop of the flashing. Tighten the adjusting screw.Apply non-combustible caulking or masticaround the circumference of the joint to pro-vide a water tight seal.


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Figure 29 - Top Vent -STRAIGHT

Figure 31 - Top Vent - TWO 90 DEGREE ELBOWS

VERTICAL VENT FIGURES/TABLESNote: Secure Vent (rigid vent pipe) is shown inthe figures; Secure Flex (flexible vent pipe) mayalso be used (see page 21).

Note: SV4.5BF (Secure Vent), SF4.5BF (SecureFlex) firestop/spacer must be used anytimevent pipe passes through a combustible flooror ceiling. Use one of the thimbles shown onpage 24 for roof penetrations as described onpage 11. SV4.5HF (Secure Vent), SF4.5HF (Se-cure Flex)firestop/spacer must be used any-time vent pipe passes through a combustiblewall.

WARNING:UNDER NO CIRCUMSTANCES MAYSEPARATE SECTIONS OF CONCEN-TRIC FLEXIBLE VENT PIPE BEJOINED TOGETHER.

Note: Two 45 degree elbows may be used in placeof one 90 degree elbow. The same rise to runratios, as shown in the venting figures for 90elbows, must be followed if 45 degree elbows areused.

Note: It is very important that the horizontal/inclined run be maintained in a straight (no dips)and slightly elevated plane in a direction awayfrom the fireplace of ¹⁄₄" rise per foot (20 mm permeter) of horizontal vent.


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Figure 33 - Top Vent - THREE ELBOWS

VERTICAL VENT FIGURES/TABLES(continued)


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F. Install firestop/spacer at ceiling betweenstories - Install a firestop/spacer (catalog no.96K87 - Secure Vent; catalog no.19M41 -Secure Flex) at the bottom side of the ceiling tothe ceiling joists. Route the vent sectionsthrough the framed opening and secure thefirestop/spacer with appropriate fasteners ateach corner.

Push the vent component against the collaruntil it fully engages, then twist the componentclockwise, running the dimples down and alongthe incline channels until they seat at the end ofthe channels. The unitized design of the Se-cure Vent components will engage and sealboth the inner and outer pipe elements with thesame procedure. Sealant and securing screwsare not required.

Remember to maintain 1" (25 mm) clear-ance to combustibles, framing members,and attic or ceiling insulation when runningvertical chimney sections. Attic insulationshield (96K94) may be used to obtain therequired clearances indicated here. See in-stallation accessories table on page 27.

HORIZONTAL (OUTSIDE WALL)TERMINATION SYSTEM

Secure Vent SV4.5 direct vent system compo-nents are unitized concentric pipe compo-nents featuring positive twist lock connection,(refer to Figure 19 on page 11). All of theappliances covered in this document are fittedwith collars having locking inclined channels.The dimpled end of the vent components fitover the appliance collar to create the positivetwist lock connection.

A. Plan the vent run -Analyze the vent routing and determine the typesand quantities of sections required4 ¹⁄₂" (114 mm), 10 ¹⁄₂" (267 mm), 22 ¹⁄₂" (572mm), 34 ¹⁄₂" (876 mm) and 46 ¹⁄₂" (1181 mm) netsection lengths are available. Plan the vent lengthsso that a section joint does not occur within thespace defined by ceiling joists, roof rafters orwall studs. Make allowances for elbows as indi-cated in Figure 27 on page 12.Maintain a minimum 1" (25 mm) clearance tocombustibles on the vertical sections. Clearancesfor the horizontal runs are; 3" (76 mm) on top, 1"(25 mm) on sides, and 1" (25 mm) at the bottom.

B. Frame exterior wall opening -Locate the center of the vent outlet on theexterior wall according to the dimensionsshown in Figures 9 (DMSTNM-2), 10(DMPFNM-2) on page 7.Cut and/or frame an opening, 10¹⁄₂" x 12¹⁄₈"(267 mm x 308mm) inside dimensions,about this center.

C. Frame ceiling opening - If the verticalroute is to penetrate a ceiling, use plumb lineto locate the center above the appliance. Cutand/or frame an opening, 10¹⁄₂" x 10¹⁄₂" (267mm x 267 mm) inside dimensions, about thiscenter (refer to Figure 18 on page 11 ).

G. Support the vertical run sections -See section E on page 12.

H. Change vent direction - At transition fromor to a horizontal/inclined run, install the SV4.5E45and SV4.5E90 elbows in the same manner as thestraight vent sections. The elbows feature a twistsection to allow them to be routed about thecenter axis of their initial collar section to alignwith the required direction of the next vent runelement. Twist elbow sections in a clockwisedirection only so as to avoid the possiblity ofunlocking any of the previously connectedvent sections.See Figure 24 on page 11.

E. Attach vent components to each other -Other vent sections may be added to the previ-ously installed section in accordance with therequirements of the vent tables. To add an-other vent component to a length of vent run,align the dimpled end of the component overthe inclined channel end of the previouslyinstalled section, adjusting the radial align-ment until the four locking dimples are alignedwith the inlets of the four incline channels of theprevious section. Push the vent componentagainst the previous section until it fully en-gages, then twist the component clockwiserunning the dimples down and along the inclinechannels until they seat at the end of thechannels.This seating position is indicated bythe alignment of the arrow and dimple asshown in Figure 20 on page 11.

D. Attach vent components to appliance - To attacha vent component to the appliance collar, align thedimpled end over the collar, adjusting the radialalignment until the four locking dimples are alignedwith the inlets of the four incline channels on thecollar (refer to Figure 19 on page 11).

I. Continue installation of horizontal/inclinedsections - Continue with the installation of thestraight vent sections in horizontal/inclined runas described in Step E. Install support strapsevery 5 ft. (1.52 m) along horizontal/inclinedvent runs using conventional plumber’s tape.See Figure 34. It is very important that thehorizontal/inclined run be maintained in astraight (no dips) and slightly elevated plane ina direction away from the fireplace of ¹⁄₄" riseper foot (20 mm per meter) of horizontal vent.Use a carpenter’s level to measure from aconstant surface and adjust the support strapsas necessary.It is important to maintain the required clear-ances to combustibles: 1" (25 mm) at allsides for all vertical runs; and 3" (76 mm) atthe top, 1" (25 mm) at sides, and 1" (25 mm)at the bottom for all horizontal/inclined runs

Both of these horizontal vent systems terminatethrough an outside wall. Building Codes limit orprohibit terminating in specific areas. Refer toFigure 8 on page 6 for location guidelines.

Figure 34, and Figures 38 to 44 on page 17 to19 and their associated Horizontal Vent Tableillustrate the horizontal venting configurationsthat are allowed to be used with these appli-ances. Secure Vent pipe applications are shown inthese figures; Secure Flex pipe may also be used.See page 20. A Horizontal Vent Table summa-rizes each system’s minimum and maximumvertical and horizontal length values that can beused to design and install the vent componentsin a variety of applications.


See Horizontal VentingFigures and Tables forUse Restrictions

SV4.5HTR HorizontalRound Termination

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Figure 35

Figure 36

Installing the Square Horizontal Termination (SV4.5HTS)

M. Install the desired termination -See the horizontal venting figures for appli-cation restrictions on the round termination(SV4.5HTR).

Venting Connection and Exterior Wall Recessing of theSquare Horizontal Termination (SV4.5HTS)

or Round Termination (SV4.5HTR)

SFHRK Snorkel Cap –The snorkel cap is de-signed to be fitted into a basement window box.The SFHRK cap is for use with flex vent pipe.Vertical distance between the inlet and outlet ofthe cap is 28 in. (711 mm).

J. Assemble vent run to exterior wall - If notpreviously measured, locate the center of thevent at the exterior wall. Prepare an opening asdescribed in Step B. Assemble the vent systemto point where the terminus of the last sectionis within 7¹⁄₂ in. (191 mm) to 11³⁄₄ in. (298 mm)inboard of the exterior surface to which theSV4.5 HTS termination is to be attached, seeFigure 36. If the terminus of the last section isnot within this distance, use the telescopicvent section SV4.5LA, as the last vent section.For wall thicknesses greater than that shown inFigure 35, refer to table 3 on page 18. Thistable lists the additional venting componentsneeded (in addition to the termination andadapter) for a particular range of wall thick-nesses.

K. Attach termination adapter - Attach theadapter (adapter - SV4.5RCH - provided withthe termination) to the vent section or tele-scoping vent section), elbow or appliance col-lar as shown in Figure 35 in the same manneras any SV4.5 vent component (refer to Step E).

L. Install Firestop/Spacer at exterior wall -When using the square termination, installSV4.5HF (Secure Vent), SF4.5HF (Secure Flex)Firestop/Spacer over the opening at the exte-rior side of the framing, long side up, with the3 inch spacer clearance at the top as shown inFigure 35, and nail into place.(The Firestop/Spacer may also be installed overthe opening at the interior side of the framing.)When using the round termination, a separatefirestop/spacer is not required since this ter-mination has integral spacers which providethe same function as a separate firestop/spacer.

1. Install the square termination(SV4.5HTS)- For the last step , from outsidethe exterior wall, slide the collars of the termi-nation onto the adapter until the terminationseats against the exterior wall surface to whichit will be attached. Orient the housing of thetermination with the arrow pointed upwards.Secure the termination to the exterior wall.The horizontal termination must not be re-cessed into the exterior wall or siding bymore than the 1 ¹⁄₄" (32 mm) as shown inFigure 34.

2. Install the round termination(SV4.5HTR) – See Figure 37 for an illustrationof the round termination. For the last step , fromoutside the exterior wall, slide the collars of thetermination onto the adapter (the outer over theouter and the inner inside the inner) until thetermination seats against the exterior wall sur-face to which it will be attached.

Orient the housing of the termination with thearrow pointed upwards. Secure the terminationto the exterior wall. The SV4.5HTR Round Ter-mination may not be used when the applianceis vented directly out the wall from the side asshown in Figure 36. Do Not recess the SV4.5HTRround termination at all.


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Figure 38 - Rear Vent - NO ELBOWS

Figure 39 - Top Vent -ONE 90 DEGREE ELBOW - ELBOW CONNECTION AT APPLIANCE

Figure 40 - Top Vent - ONE 90 DEGREE ELBOW - ELBOWCONNECTION NOT DIRECTLY AT APPLIANCE

WARNING:UNDER NO CIRCUMSTANCES MAY SEPARATE SECTIONS OFCONCENTRIC FLEXIBLE VENT PIPE BE JOINED TOGETHER.

Only the square termination (SV4.5HTS) may be used.

HORIZONTAL VENT FIGURES/TABLESNote: Secure Vent components (rigid vent pipe and terminal) are shown inthe figures; Secure Flex components (flexible vent pipe and terminal) may alsobe used.

Note: SV4.5BF (Secure Vent), SF4.5BF (Secure Flex) firestop/spacer must beused anytime vent pipe passes through a combustible floor or ceiling. SV4.5HF(Secure Vent), SF4.5HF (Secure Flex) firestop/spacer must be used anytimevent pipe passes through a combustible wall.

Note: Two 45 degree elbows may be used in place of one 90 degree elbow.The same rise to run ratios, as shown in the venting figures for 90 elbows, mustbe followed if 45 degree elbows are used.

Square termination (SV4.5HTS) shown; RoundTermination (SV4.5HTR) may also be used.


Note: It is very important that the horizontal/inclined run be maintained ina straight (no dips) and slightly elevated plane in a direction away from thefireplace of ¹⁄₄" rise per foot (20 mm per meter) of horizontal vent.

*Note: See Figure 36 for wall thickness range reductions when usingSV4.5HTS termination.

See Table 3 as an aid in venting component selection for a particularrange of exterior wall thicknesses.


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Figure 41 - Rear Vent - TWO 90 DEGREE ELBOWS

Figure 42 - Top Vent - TWO 90 DEGREE ELBOWS

HORIZONTAL VENT FIGURES/TABLES(continued)

Square termination (SV4.5HTS) shown; Round Termination (SV4.5HTR) may also be used.





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Figure 43 - Rear Vent - THREE 90 DEGREE ELBOWS

HORIZONTAL VENT FIGURES/TABLES(continued)

Square termination (SV4.5HTS) shown; Round Termination (SV4.5HTR) may also be used.





GEARCLAMPS

Adapter(SV4.5RF)

Apply ONLY MIL-PAC BLACK HIGHTEMPERATURE SEALANT (CatalogNo. 10K81) to the outside surfaceof both collars of the adapter (beespecially careful to fill the groovesof the outer collar to be covered bythe flexible pipe) and slide flexiblepipe over inner and outer adaptercollars.

NOTE: OUTER PIPE IS PULLED AWAY TOSHOW THE DETAIL OF THE INNER PIPE

FLEX VENT

1³⁄₄ in. (44 mm)Flexible Pipe and

Adapter Outer Collar Overlap1³⁄₄ in. (44 mm)

Flexible Pipe and Adapter Inner Collar Overlap

SECURING SCREW(3 PLACES EQUIDISTANT

JUST BELOW GEAR CLAMP)

Attach Adapter to ApplianceCollar, or Secure Vent Sections

SECURING SCREW(3 PLACES EQUIDISTANT

JUST BELOW GEAR CLAMP)

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D. Install Firestop/Spacers at walls andFirestop Thimbles at ceilings and roofs -When Secure Flex penetrates a wall use theSF4.5 HF firestop/spacer. See the appropri-ate sections and figures shown throughoutthe venting section for their installation re-quirements. When Secure Flex penetrates aceiling or roof use the appropriate firestopthimble listed in the Table on page 24 anddescribed in Figures 21 and 22 on page 11.

Figure 46

Figure 45

VERTICAL OR HORIZONTAL VENTING USINGSECURE FLEX KITS AND COMPONENTS

Secure Flex venting kits and components maybe used in any venting application in place ofrigid Secure Vent (SV4.5) direct vent compo-nents. All restrictions, clearances and allow-ances that pertain to the rigid piping apply tothe flexible venting. Secure Flex kits may notbe modified; also, under no circumstancesmay separate sections of flex pipe be joinedtogether.

Using adapter (SV4.5RF), Secure Flex kits maybe added to the end of a vent run made up ofrigid Secure Vent (SV4.5) vent sections pro-vided that doing so does not violate any of theventing length, height, routing, horizontal tovertical ratio requirements or clearance consid-erations detailed in this manual.Secure Flex kits come with an adapter that canbe fitted to the inclined channel end of the lastSecure Vent (SV4.5) vent section in a rigidsystem in the exact same fashion as any otherSecure Vent section.Align the dimpled end of the adapter over thepreviously installed section or appliance collar,adjusting the radial alignment until the fourlocking dimples of the adapter are aligned withthe inlets of the four incline channels of the lastvent section or collar. Push on the adapter untilit fully engages, then twist the adapter clock-wise running the dimples down and along theincline channels until they seat at the end of thechannels.

B. Install the Outer Flex Pipe -1. Install the large gear clamp loosely aroundthe outer flexible vent pipe, push it back outof the way.2. Apply a bead of Mill-Pac Black (700°F)high temperature sealant - Catalog No.10K81) to the outer adapter collar; to thegrooves of the collar which extend approxi-mately 1 inch from the end and to the flatsurface, approximately 1³⁄₈ inches from theend.3. Pull and extend the outer flexible vent pipe.4. Slide the outer flex pipe over the adaptercollar. Ensure the flexible vent pipe com-pletely engages the adapter collar to a dis-tance of 1³⁄₄ inches from the end, and that itis free from damage or tears. 5. Slide the gear clamp down and tighten itfully to secure the flexible vent to the adapterouter collar approximately ³⁄₄ inch from theend of the flex.6. Install three screws 120 degrees apartthrough the flexible vent pipe and into theadapter collar just below the gear clamp toprovide additional security to the connection.

C. Route Flex Vent -Ensure that the flex vent is properly routed toprovide the required clearance. Do not allowthe flexible vent to bend in a radius tighter than5" (127 mm). Refer to Figure 46. Space out theinternal flex vent spacers evenly - approxi-mately every 6 inches - and avoid kinking ofinner pipe. Support horizontal sections of flexwith metal straps at 2 foot (0.61m) intervals.

Attach the flexible vent to the adapter asfollows (see also Figure 45):A. Install the Inner Flex Pipe -

1. Install the small gear clamp looselyaround the inner flexible vent pipe, push itback out of the way.2. Apply a bead of Mill-Pac Black (700°F)high temperature sealant - Catalog No.10K81) to the inner adapter collar, approxi-mately ¹⁄₂ inch from the end.3. Pull and extend the inner flexible ventpipe.4. Slide the inner flex pipe over the adaptercollar. Ensure the flexible vent pipe com-pletely engages the adapter collar to a dis-tance of 1³⁄₄ inches from the end, and thatit is free from damage or tears. 5. Slide the gear clamp down and tighten itfully to secure the flexible vent to the adapterinner collar approximately ³⁄₄ inch from theend of the flex.6. Install three screws 120 degrees apartthrough the flexible vent pipe and into theadapter collar just below the gear clamp toprovide additional security to the connection.

E. Attach Flex Vent to Termination -Secure Flex components can be purchasedseparately and attached to bulk lengths ofSecure Flex flexible tubing cut to size at thejob site. Secure the flexible vent to the SecureFlex terminations in the same manner (seeFigure 45) as it was attached to the adapter.


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Note: Secure Flex vent must be attached toSecure Flex terminations only. DO NOT sub-stitute Secure Vent terminations or the Se-cure Vent adapter for Secure Flex compo-nents. The collars of Secure Flex termina-tions and adapters have a different diameterthan that used with the Secure Vent pipe.Additionally, Secure Flex components havean extended length center tube for use inattaching the flexible vent.

Step 4. MILLIVOLT CIRCUIT WIRING(Figure 47 )

The gas valve is set in place and pre-wired atthe factory.

1. Select any of the following optionalcontrols: appliance-mounted (rockerswitch) or wall-mounted switch, ther-mostat, or one of the optional remotecontrol kits. If appliance-mounted ON/OFF control is selected, mount it in thegas valve mounting bracket.

2. If wall-mounted ON/OFF control or ther-mostat is selected mount it in a conve-nient location on a wall near the fireplace.

3. Wire the control within the millivolt con-trol circuit using the 15 feet of 2 conduc-tor wire supplied with the unit.Caution: Do not connect the optionalwall switch to a 120V power supply.

4. Alternatively, the appliance may be oper-ated without the use of the controls indi-cated in step 1, solely by manipulatingthe gas valve control knob. In order touse this method, twist the free ends ofthe two conductor wire (located on top ofthe unit) together as shown in Figure 47.

Note: The supplied 15 feet of 2 conductorwire has one end of each conductorconnected to the gas valve circuit and theother end of each conductor placedloose on top of the unit.

Gas Stub

¹₂" x ³₈" FlareShut-Off Valve

³₈" Flex Tubing

³₈" NPT x ³₈"Flare Fitting

³₈" Nipple

³₈" Union

³₈" Close Nipple³₈" Shut-Off Valve

¹₂" x ³₈ " Reducer

GasValve

Gas Flex Line Connector

Figure 49

Figure 48- GAS CONNECTION

Turn on gas supply and test for gas leaks usinga soapy water solution. Never use an openflame to check for leaks.

A. Mix a 50% dish soap, 50% water solution.

B. Light the appliance (refer to the lightinginstructions provided in the Homeowner's Careand Operation Instructions).

C. Brush all joints and connections with thesoapy water solution to check for leaks. If bubblesare formed, or gas odor is detected, turn the gascontrol knob to the “OFF” position. Either t

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