FMI PFS DVF-36NS-HA User Manual

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Venting Installation

Continued

INSTALLATION PLANNING

There are two basic types of direct vent installation:

• Horizontal Termination

etrated is constructed of noncombustible material, such as masonry block or concrete, a 8 1/2" hole with zero clearance is acceptable (see Figure 9).

• Vertical Termination

Horizontal Termination Installation

IMPORTANT: Horizontal square terminations require only inner portion of wall firestop. Horizontal installations using round termination require exterior portion of wall firestop.

1.Set fireplace in its desired location and determine the route your horizontal venting will take. Do not secure fireplace until all venting has been installed. Some installations require sliding fireplace in and out of position to make final venting connections. Figures 14 and 15 on page 12 show different configurations for venting with horizontal termination that will help you decide which application best suits your installation. Check to see if wall studs or roof rafters are in the path of your desired venting route. If they are, you may want to adjust location of fireplace.

2.Direct vent pipe sections and components are designed with special twist-lockconnections.

Twist-LockProcedure:Female ends of pipes have locking lugs (indentations).

These lugs will slide straight into matching slots on male ends of adjacent pipes.

Push pipe sections together and twist one section clockwise approximately onequarter turn until sections are fully locked

(see Figure 8).

Note: Horizontal runs of vent must be supported every three feet. Use wall straps for this purpose.

3.Assemble desired combination of pipe and elbows to fireplace flue collar. If there are long portions of venting run, pre-as-sembled pipe sections may be installed as subassemblies for convenience.

4.Carefully determine location where vent pipe assembly will penetrate outside wall. Center of hole should line up with center line of horizontal vent pipe. Mark wall for

an 11 1/2" x 111/2" square hole. Cut and frame square hole in exterior wall where vent will be terminated. If wall being pen-

WARNING: Do not recess vent termination into any wall. This will cause a fire hazard.

Female

Locking Lugs

Male

Slots

Figure 8 - Vent Pipe Connections

Vent Opening

Combustible Wall

11 1/2" Inside Framing

11 1/2"

 

11 1/2"

(Framing

Vent Opening Detail)

Noncombustible Wall

8 1/2"

Center

of Hole

Figure 9 - Vent Opening Requirements

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Venting Installation

Continued

5.Noncombustible Exterior Wall: Position

horizontal vent cap in center of the 8 1/2" round hole and attach to exterior wall with four wood screws provided. Before attaching vent cap to exterior wall, run a bead ofnon-hardeningmastic (pliable sealant) around outside edges to make a seal between it and outside wall.

Note: Four wood screws provided should be replaced with appropriate fasteners for stucco, brick, concrete or other types of sidings (see Figure 10).

Combustible Exterior Wall: For vinyl siding, stucco or wood exteriors, a siding standoff may be installed between vent cap and exterior wall. Siding standoff prevents excessive heat from damaging siding materials. Siding material must be cut to accommodate standoff. Bolt vent cap to standoff. Apply non-hardening mastic around outside edge of standoff. Position standoff/cap assembly in the

center of 11 1/2" square hole and attach to exterior wall with provided wood screws

(see Figure 11). Siding standoff must sit flush against exterior fascia material.

6.Connecting Vent Cap with Horizontal Vent Pipe: Slide wall firestop over vent pipe before connecting horizontal run to vent cap (see Figure 12).

Apply

Mastic to All

Four Sides

Vent Cap

Wood

Screw

Figure 10 - Installing Horizontal Vent Cap

(Noncombustible Exterior)

Carefully move fireplace, with vent assembly attached, toward wall and insert vent pipe into horizontal termination. Pipe overlap should be a minimum of 1 1/4" (see

Figure 13, page 13).

Slide wall firestop against interior wall surface and attach with screws provided.

See Figure 13, page 13, for horizontal termination details.

Place fireplace into position and shim with noncombustible material if needed. Nail or screw side flanges to framing to secure unit in place. IMPORTANT: Make sure fireplace is level before securing. If fireplace is not level it will not work properly.

Cut Siding Away to

Fit Standoff

Standoff Wood

Screw

Vent

Cap

Apply Mastic

Screws

to All Four Sides

Figure 11 - Installing Siding Standoff

(Combustible Exterior Wall)

Interior Wall

Surface

Wall

Firestop

Vent Cap (Horizontal Termination)

ScrewHorizontal

Vent Pipe

Figure 12 - Connecting Vent Cap with Horizontal Vent Pipe

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Venting Installation

Continued

 

 

 

Minimum

Siding

 

 

 

Pipe

Standoff

Direct

 

Overlap

Screws

Vent

 

 

11/4

 

Pipe

 

Wall

 

 

 

 

 

Firestop

 

Maintain 1"

 

 

 

Minimum Air

 

 

 

Space Around

 

High Wind

Outer Pipe When

Termination

Penetrating a Wall

Apply

 

 

 

 

 

 

 

 

 

 

 

 

Mastic to

11

1

2

" x 11

1

2

Outside

 

/

 

/ "

Edge of

Framed Opening

Standoff

 

 

 

 

 

 

 

 

 

Exterior Wall with Vinyl Siding

Figure 13 - Typical Horizontal Termination Cap Mounting with Additional Siding Standoff Installed

Horizontal Termination Configurations

Figure 14 shows a configuration for venting with horizontal termination with a chart of critical minimum and maximum dimensions which MUST be met.

NOTICE:Donotsealtermination cap to vent pipe. Cap must be removable for vent inspection and maintenance.

WARNING: Never run vent downward as this may cause excessive temperatures which could cause a fire. Operation of improperly installed and maintained venting system could resultinseriousinjury,property damage or loss of life.

GROUND FLOOR INSTALLATION

Recommended Applications:

Through the wall using round or square termination

NOT FOR CORNER INSTALLATION

1' Pipe Min On

90° Elbow

Horizontal Run

 

Wall

H

 

Firestop

 

 

 

 

 

V + 90· Elbow

 

 

1 ft. Min

 

 

Before

 

 

Elbow

Horizontal High

 

Wind Square

 

 

Termination

 

 

64" Min. (42")

 

61" Min. (36")

 

(V) Vertical

Required

(H) Horizontal

Minimum

Vertical Pipe

Maximum

21"

1 ft.

3 ft.

33"

2 ft.

7 ft.

45"

3 ft.

11 ft.

57"

4 ft.

20 ft.

V + H = 40 feet maximum

H = 20 feet maximum

Figure 14 - Horizontal Termination Using

One 90° Elbow

Vertical Termination Installation

Note: Vertical restrictormust be installed in all vertical installations.

1.Determine route your vertical venting will take. If ceiling joists, roof rafters or other framing will obstruct venting system, consider an offset (see Figure 15, page 14) to avoid cutting load bearing members.

Note: Pay special attention to these installation instructions for required clearances (air space) to combustibles when passing through ceilings, walls, roofs, enclosures, attic rafters, etc. Do not pack air spaces with insulation. Also note maximum vertical rise of venting system and any maximum horizontal offset limitations.

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Venting Installation

Continued

2.Set fireplace in desired location. Drop a plumb line down from ceiling to position of fireplace exit flue. Mark center point where vent will penetrate ceiling. Drill a small locating hole at this point.

3.Drop a plumb line from inside of roof to locating hole in ceiling. Mark center point where vent will penetrate roof. Drill a small locating hole at this point.

Roof Flashing

Wall Strap

45° Elbow

Ceiling Firestop

Figure 15 - Offset with Wall Strap and 45° Elbows

Flat Ceiling Installation

1.Cut a 11 1/2" square hole in ceiling using locating hole as a center point. Opening

should be framed to 11 1/2" x 111/2" inside dimensions, as shown in Figure 8 on page

9 using framing lumber the same size as ceiling joists. If area above ceiling is an insulated ceiling or an attic, nail firestop from top side. This prevents loose insulation from falling into required clearance space. If area above ceiling is a living space, install firestop below framed hole.

Firestop should be installed with no less than three nails per side (see Figure 15).

2.Assemble desired lengths of pipe and elbows necessary to reach from fireplace flue up through firestop. Be sure all pipe and elbow connections are fully twistlocked (see Figure 8, page 11).

3.Cut a hole in the roof using locating hole as a center point. (Cover any exposed

open vent pipes before cutting hole in roof.) The 11 1/2" x 111/2" hole must be measured on the horizontal; actual length may be larger depending on pitch of roof.

There must be a 1" clearance from vent pipe to combustible materials. Frame opening as shown in Figure 9, page 11.

4.Connect a section of pipe and extend up through hole.

Note: If an offset is needed to avoid obstructions, you must support vent pipe every 3 feet. Use wall straps for this purpose (see Figure 15). Whenever possible, use 45° elbows instead of 90° elbows. The

45°elbowofferslessrestrictiontotheflow of flue gases.

5.Place flashing over pipe section(s) extending through roof. Secure base of flashing to roof and framing with roofing nails. Be sure roofing material overlaps top edge of flashing as shown in Figure 15. There must be a 1" clearance from vent pipe to combustible materials.

6.Continue to add pipe sections until height of vent cap meets the minimum building code requirements described in Figure 7 on page 8.

Note: You must increase vent height for steep roof pitches. Nearby trees, adjoining rooflines, steep pitched roofs and other similar factors may cause poor draft or down-draftingin high winds. Increasing vent height may solve this problem.

7.Twist-lockvent cap onto last section of vent pipe.

Vent Termination Chart

Minimum Height

Roof Pitch

Feet Min.

Flat to 6/12

1

6/12 to 7/12

1.25

Over 7/12 to 8/12

1.5

Over 8/12 to 9/12

2

Over 9/12 to 10/12

2.5

Over 10/12 to 11/12

3.25

Over 11/12 to 12/12

4

Over 12/12 to 14/12

5

Over 14/12 to 16/12

6

Over 16/12 to 18/12

7

Over 18/12 to 20/12

7.5

Over 20/12 to 21/12

8.0

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Venting Installation

Continued

Note: If vent pipe passes through any occupied ar-

High Altitude Installation

easabovefirstfloor,includingstoragespacesand

Your FMI PRODUCTS, LLC direct vent

closets, you must enclose pipe. You may frame

fireplace has been tested and approved for

and sheetrock enclosure with standard construc-

elevations from 0-2000feet.

tion material. Make sure and meet the minimum

Fireplaces for high altitude (-HAModels) are

allowable clearances to combustibles. Do not fill

for installations above 4,000 feet only. These

any required air spaces with insulation.

fireplaces are equipped with parts specific for

Vertical Termination Configurations

higher altitudes.

When installing a non-highaltitude fireplace at

Figure 17 shows the configurations for vertical

termination.

an elevation above 2000 feet, you may need

to decrease the input rating by changing the

If area above is an attic or insulated area,

existingburnerorificetoasmallersize.Reduce

install firestop above framed hole.

input 4% for each 1000 feet above sea level.

 

 

 

 

 

 

 

 

Check with your local gas company for proper

 

 

 

 

 

 

 

 

orifice size identification.

 

 

 

 

 

 

 

 

When installing this fireplace at an elevation

 

 

 

 

 

 

 

 

above 4500 feet, check with local authorities.

 

 

 

 

 

 

 

 

 

Parts list for venting kits

If area above is a living space, install

and components

FMI (5/8") Pipe & Vent Kits

firestop below framed hole.

 

Number

Description

 

P58-6

6" Section Double Wall Pipe,

 

 

Galvanized

 

P58-12

12" Section Double Wall Pipe,

 

 

Galvanized

 

P58-24

24" Section Double Wall Pipe,

 

 

Galvanized

Figure 16 - Installing Firestop

P58-36

36" Section Double Wall Pipe,

 

Galvanized

 

P58-48

48" Section Double Wall Pipe,

 

 

Galvanized

 

PA58-712

Adjustable 7"-12"Section Double

 

 

Wall Pipe, Galvanized

 

E58-45

45° Elbow, Galvanized

 

E58-90

90° Elbow, Galvanized

Vertical

HTS-58

Horizontal Square Termination,

 

Galvanized

Venting

HHT-58

High Wind Round Termination,

V = 40' max.

 

Galvanized

 

VT-58

Vertical Round Termination,

 

 

Galvanized

 

SC-58

Storm Collar, Galvanized

 

WF-58

Wall Firestop, Galvanized

 

RF-58-6

Roof Flashing - 0 to 6/12 Pitch,

 

 

Galvanized

 

RF-58-12

Roof Flashing - 6/12 to 12/12 Pitch,

 

 

Galvanized

 

VR-58

Vertical Restrictor, Galvanized

 

S-58

Vinyl Siding Standoff, Galvanized

 

WS-58

Wall Strap

 

CS-58

Cathedral Ceiling Support

 

FP-58

Firestop Plate

 

SF-58

Stucco Flashing - For use with

 

 

HTS-58

Figure 17 - Vertical Venting Configuration

RF-58

Flat Roof Flashing

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Fireplace Installation

CHECK GAS TYPE

Use proper gas type for the fireplace unit you are installing. If you have conflicting gas types, do not install fireplace. See retailer where you purchased the fireplace for proper fireplace according to your gas type.

Installing Gas Piping to Fireplace Location

WARNING: A qualified service person must connect fireplace to gas supply. Follow all local codes.

CAUTION: For propane/LP units,neverconnectfireplacedirectly to the propane/LPsupply. This heater requires an external regulator (not supplied). Install the external regulator between the fireplace and propane/LP supply.

WARNING: For natural gas, never connect fireplace to private(non-utility)gas wells. This gas is commonly known as wellhead gas.

Installation Items Needed

Before installing fireplace, make sure you have the items listed below.

external regulator (supplied by installer)

piping (check local codes)

sealant (resistant to propane/LP gas)

equipment shutoff valve *

test gauge connection *

sediment trap

tee joint

pipe wrench

approved flexible gas line with gas connector (if allowed by local codes)

* An equipment shutoff valve with 1/8" NPT tap is an acceptable alternative to test gauge connection. Purchase the equipment shutoff

valve from your retailer.

For propane/LP connection only, the installer must supply an external regulator. The external regulator will reduce incoming gas pressure. You must reduce incoming gas pressure to between 11" and 14" of w.c. pressure. If you do not reduce incoming gas pressure, fireplace regulator damage could occur. Install external regulator with the vent pointing down as shown in Figure 18. Pointing the vent down protects it from freezing rain or sleet.

CAUTION: Use only new, black iron or steel pipe. Inter-nally-tinnedcopper tubing may be used in certain areas. Check your local codes. Use pipe of 1/2"diameterorgreatertoallow proper gas volume to fireplace. If pipe is too small, undue loss of volume will occur.

Installation must include an equipment shutoff valve, union and plugged 1/8" NPTtap. Locate

NPT tap within reach for test gauge hook up.

NPTtap must be upstream from fireplace (see Figure 19, page 17).

IMPORTANT: Install main gas valve (equipment shutoff valve) in an accessible location. The main gas valve is for turning on or shutting off the gas to the appliance.

External Regulator

with Vent Pointing

Propane/LP Down Supply Tank

Figure 18 - External Regulator with Vent Pointing Down (Propane/LP Only)

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Fireplace Installation

Continued

Check your building codes for any special requirements for locating equipment shutoff valve to fireplaces.

Apply pipe joint sealant lightly to male NPT threads. This will prevent excess sealant from going into pipe. Excess sealant in pipe could result in clogged fireplace valves.

Equipment Shutoff Valve

 

with 1/8" NPT Tap*

Natural - From

 

 

Gas Meter (5.5"

 

W.C. to 10.5" W.C.

 

Pressure)

 

Propane/LP From

Approved

External Regulator

Flexible

(11" W.C. to 14"

Gas Line

W.C. Pressure)

3" Minimum

 

 

Cap

Pipe

Tee

 

Joint

Nipple

Sediment Trap/

Drip Leg

Figure 19 - Gas Connection

* The equipment shutoff valve may be supplied with the appliance or you can purchase it from your retailer.

WARNING: Use pipe joint sealantthatisresistanttoliquid petroleum (LP) gas.

We recommend that you install a sediment trap/drip leg in supply line as shown in Figure 19. Locate sediment trap/drip leg where it is within reach for cleaning. Install in piping system between fuel supply and fireplace. Locate sediment trap/drip leg where trapped matter is not likely to freeze. A sediment trap traps moisture and contaminants. This keeps them from going into fireplace gas controls. If sediment trap/drip leg is not installed or is installed wrong, fireplace may not run properly.

CONNECTING FIREPLACE TO GAS SUPPLY

Installation Items Needed

5/16" hex socket wrench or nut-driver

sealant (resistant to propane/LP gas, not provided)

1.Route flexible gas line (provided by installer) from equipment shutoff valve to fireplace. Route flexible gas supply line through one of the access holes on side of fireplace.

2.Attach flexible gas line from gas supply to control valve (see Figure 20).

3.Check all gas connections for leaks. See

Checking Gas Connections, page 18.

 

Flexible

 

Pilot Adjustment

 

Red Surface Indicates For

 

Outlet Pressure Tap

 

 

Propane/LP Use Only

Gas Shutoff

Gas Line

 

 

Do NOT

 

 

 

 

 

 

Valve

Kink

 

 

 

VENT

 

 

 

IN

 

OUT

 

 

 

 

PILOT

TH TP

TP

 

 

 

 

 

TH

 

 

 

 

 

IN

 

 

 

1/2" NPT

 

 

 

 

 

 

 

Incoming

Note:

 

 

 

 

 

 

Gas Line

 

 

 

 

 

 

1) Wire connections not

 

Inlet Pressure Tap

 

 

shown for clarity

 

 

2)* 1/8" NPT Plugged Tapping

Figure 20 - Connecting Incoming Gas Line to Flex Gas Line

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Fireplace Installation

Continued

CHECKING GAS CONNECTIONS

WARNING:Testallgaspiping and connections, internal and external to unit, for leaks after installing or servicing. Correct all leaks at once.

WARNING: Never use an open flame to check for a leak. Apply noncorrosive leak detection fluid to all joints. Bubbles forming show a leak. Correct all leaks at once.

Pressure Testing Gas Supply Piping System

Test Pressures In Excess Of 1/2 PSIG (3.5 kPa)

1.Disconnect fireplace and its individual equipment shutoff valve from gas supply piping system. Pressures in excess of 1/2 psig (3.5 kPa) will damage fireplace gas regulator.

2.Cap off open end of gas pipe where equipment shutoff valve was connected.

3.Pressurize supply piping system by either opening propane/LP supply tank valve for propane/LP gas fireplace or opening main gas valve located on or near gas meter for natural gas fireplace or using compressed air.

4.Check all joints of gas supply piping system. Apply noncorrosive leak detection fluid to all joints. Bubbles forming show a leak. Correct all leaks at once.

5.Reconnect fireplace and equipment shutoff valve to gas supply. Check reconnected fittings for leaks.

Test Pressures Equal To or Less Than 1/2 PSIG (3.5 kPa)

1.Close equipment shutoff valve (see Figure 21).

2.Pressurize supply piping system by either opening propane/LP supply tank valve for propane/LP gas fireplace or opening main gas valve located on or near gas meter for natural gas fireplace or using compressed air.

3.Check all joints from propane/LP supply tank or gas meter to equipment shutoff valve (see Figure 22 or Figure 23).Apply noncorrosive leak detection fluid to all joints. Bubbles forming show a leak.

4.Correct all leaks at once.

Equipment

Open

Shutoff Valve

Closed

Figure 21 - Equipment Shutoff Valve

Equipment

Shutoff Valve

Propane/LP

Supply Tank

Gas Valve

Figure 22 - Checking Gas Joints for

Propane/LP Gas Fireplace

Equipment

Shutoff Valve

Gas Meter

Gas Valve

Figure 23 - Checking Gas Joints for Natural Gas Fireplace

Pressure Testing Fireplace Gas Connections

1.Open equipment shutoff valve (see Figure 21).

2.Open propane/LP supply tank valve for propane/LP fireplace or main gas valve located on or near gas meter for natural gas fireplace.

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Fireplace Installation

Continued

3.Make sure control knob of fireplace is in the OFF position.

4.Check all joints from equipment shutoff valve to gas valve (see Figure 22 or

Figure 23, page 18). Apply noncorrosive leak detection fluid to all joints. Bubbles forming show a leak. Correct all leaks at once.

5.Light fireplace (see Operation, page 22). Check all other internal joints for leaks.

6.Turn off fireplace (see To Turn Off Gas to Appliance, page 23).

Removing/Replacing Glass

Door

CAUTION: Do not operate thisfireplacewithabrokenglass door panel or without the glass door panel securely in place. For replacement part information seeReplacement Parts, page 36.

CAUTION:Wearglovesand safety glasses while handling or removing broken glass. Do not remove if glass is hot. Keep children and pets away from glass.

WARNING: If fireplace has been running, turn off fireplace. Let cool before removing glass doors.

Removing Glass Door

If replacement of glass is necessary, the entire frame assembly must be replaced. Gloves must be worn when removing/replacing glass door. If glass is broken tape remaining glass onto frame before removing.

1.Remove screens if installed.

2.Open bottom access panel.

3.Unlock 2 door latches on bottom of firebox.

4.Tilt open glass door 45° from the bottom of firebox and lift up to release door from firebox top retainer (see Figure 24).

Door

Retainer

Glass

Door

Door Bottom

Latches Access Panel

Figure 24 - Removing/Replacing Door

Replacing Glass Door

1.Position door frame in front of firebox opening with bottom of door tilted away from firebox (see Figure 24).

2.Hook top flange of door frame over top of firebox frame.

3.Secure 2 bottom door latches.

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Fireplace Installation

Continued

Lava Rock, Decorative Grate, Ember Flakes and Scrap Log

Installation

Lavarock,emberflakesandscraplogpiecesare included with your fireplace. Install these items while glass doors are open and/or removed.

1.Follow instructions from Removing/Replacing Glass Door, page 19, to move glass out of the way of this installation.

2.For 36" models only, install 3 loose logs by placing log #1, log #2 and log #3 onto one piece log as shown in Figure 25.

3.Place lava rock around base of burner. Make sure burner ports are not covered (see Figure 26).

4.Place ember flakes around front and sides of burner and on burner ports (see Figure 27). Thiswillcreatetheglowingemberappearance astheflametouchestheemberflakes.Donot blockburnerportsorpilotportsbyoverlapping ember flakes in one area. It is not necessary to use all ember material provided.

5.Place scrap log pieces randomly behind grate as shown in Figure 28 on lava rock and around (but not on) burner ports.

6.Place grate in front of logs as shown in

Figure 28. Be sure grate is balanced so it does not fall or lean onto logs. Grate does not attach to hearth assembly.

Log #3

Log #2

Log #1

 

 

 

Figure 25 - Installing Loose Logs

Lava Rock

Figure 26 - Installing Lava Rock

Ember Flakes

Figure 27 - Installing Ember Flakes

Scrap Log Pieces

Figure 28 - Installing Scrap Log Pieces

Removing Logset/burner module

Connecting and Disconnecting Gas Line

WARNING: A qualified service person must connect and disconnect fireplace with gas supply. Follow all local codes.

1.Using a 5/16" hex socket wrench or nutdriver,connectordisconnectflexiblegasline and control valve (see Figure 29, page 21).

2.After connecting gas line to control valve, always test for leaks.

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