Monessen Hearth CDVT36, CDVR36 User Manual

CDV SERIES

DIRECT VENT GAS FIREPLACE

INSTALLATION AND OPERATING INSTRUCTIONS

MODELS:

CDVR33, CDVT33,

CDVR36 AND CDVT36

WARNINGS

IF THE INFORMATION IN THESE INSTRUCTIONS ARE NOT FOLLOWED EXACTLY, A FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR LOSS OF LIFE.

–Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.

–WHAT TO DO IF YOU SMELL GAS

•Do not try to light any appliance.

•Do not touch any electrical switch; do not use any phone in your building.

•Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's instructions.

•If you cannot reach your gas supplier, call the fire department.

–Installation and service must be performed by a qualified installer, service agency or the gas supplier.

WARNING: Improper installation, adjustment, alteration, services or maintenance 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.

This appliance may be installed in an aftermarket*, permanently located, manufactured home (USA only) or mobile home, where not prohibited by local codes.

This appliance is only for use with the type of gas indicated on the rating plate. This appliance is not convertible for use with other gases, unless a certified kit is used.

*Aftermarket: Completion of sale, not for purpose of resale, from the manufacturer.

CDVT

CDVR

DUE TO HIGH TEMPERATURES, THE APPLIANCE SHOULD BE LOCATED OUT OF TRAFFIC AND AWAY FROM FURNITURE AND DRAPERIES.

CHILDREN AND ADULTS SHOULD BE ALERTED TO THE HAZARDS OF HIGH SURFACE TEMPERATURE AND SHOULD STAY AWAY TO AVOID BURNS OR CLOTHING IGNITION.

Y O U N G C H I L D R E N S H O U L D B E SUPERVISED WHEN THEY ARE IN THE SAME ROOM AS THE APPLIANCE.

CLOTHING OR OTHER FLAMMABLE MATERIAL SHOULD NOT BE PLACED ON OR NEAR THE APPLIANCE.

KEEP THE ROOM AREA CLEAR AND FREE FROM COMBUSTIBLE MATERIALS, GASOLINE, AND OTHER FLAMMABLE VAPORS AND LIQUIDS.

READ BEFORE INSTALLING. SAVE THESE INSTRUCTIONS

CONTENTS

Important Safety Information ..........................	3
Product Features..............................................	5
Code Approval..................................................	5
Pre-Installation Information
Installing Above 2000 Feet............................	6
Orifice Sizes, Pressures and BTUs...............	6
Before You Start............................................	6
Fireplace Framing - CVDR36 and CDVR33.. 7
Fireplace Framing - CVDT36 and CDVT33 ..	8
Fireplace Dimensions....................................	9
Fireplace Location.......................................	10
Clearances ......................................................	11
Securing Fireplace to Floor or Framing .......	12
Installation Information..................................	13
Installation Precautions...............................	13
Vent Installation..............................................	14
Rear Vent Installation..................................	14
Top Vent Installation ...................................	15
Installation Planning....................................	16
Rear (Through the Wall) Applications .........	19
Horizontal Termination Configuration..........	21
Below Grade Installation .............................	23
Vertical Through-the-Roof Installation.........	24
Installation for Vertical Termination.............	25
Cathedral Ceiling Installation ......................	26
Fireplace Installation......................................	27
Check Gas Type .........................................	27
Installing Gas Piping to Fireplace/Burner
System Location..........................................	27
Checking Gas Pressure .................................	29
Electrical Installation......................................	29
Electrical Wiring ..........................................	30
Electronic Pilot Ignition Wiring.....................	31
Remote Wall Switch....................................	31
Optional Fan/Blower Systems.....................	32
Glass Removal................................................	33
Final Installation .............................................	34
Rockwool Placement...................................	34

Log Placement ............................................		34
Lava Rock and Ember Placement...............		34
Millivolt Operating Instructions.....................		35
What To Do If You Smell Gas.....................		35
Lighting Pilot for the First Time ...................		35
Lighting Pilot................................................		36
Lighting Burner............................................		37
To Turn Off Gas ..........................................		37
Electronic Ignition Operating Instructions...		38
What To Do If You Smell Gas.....................		38
Lighting Electronic Ignition ..........................		38
To Turn Off Gas ..........................................		38
Cleaning and Maintenance ............................		39
Burner, Pilot and Control Compartment......		39
Pilot Flame ..................................................		39
Burner Flame ..............................................		39
Vent System................................................		40
Glass Door ..................................................		40
Logs ............................................................		40
Rock Wool ..................................................		40
Troubleshooting .............................................		41
Replacement Parts .........................................		44
Firebox Components...................................		44
Standing Pilot - Millivolt Control Engine ..... 46
Electronic Ignition Engine ...........................		48
Logs ............................................................		49
Vent Components .......................................		50
Massachusetts Requirements.......................		51
Warranty...........................................	Back Cover

2

69D0023

		IMPORTANT SAFETY INFORMATION
INSTALLER		OWNER
Please leave these instructions with the appliance.		Please retain these instructions for future reference.
WARNINGS	• Read this owner’s manual carefully and completely before trying to assemble, operate,
	or service this fireplace.
	• Any change to this fireplace or its controls can be dangerous.
	• Improper installation or use of this fireplace can cause serious injury or death from
	fire, burns, explosions, electrical shock and carbon monoxide poisoning.

This fireplace is a vented product. This fireplace must be properly installed by a qualified service person. The glass door must be properly seated and sealed. If this unit is not properly installed by a qualified service person with glass door properly seated and sealed, combustion leakage can occur.

CARBON MONOXIDE POISONING: Early signs of carbon monoxide poisoning are similar to the flu with headaches, dizziness and/or nausea. If you have these signs, the fireplace may not have been installed properly. Get fresh air at once! Have the fireplace inspected and serviced by a qualified service person. Some people are more affected by carbon monoxide than others. These include pregnant women, people with heart or lung disease or anemia, those under the influence of alcohol, and those at high altitudes.

Propane/LP gas and natural gas are both odorless. An odormaking agent is added to each of these gases. The odor helps you detect a gas leak. However, the odor added to these gases can fade. Gas may be present even though no odor exists.

Make certain you read and understand all warnings. Keep this manual for reference. It is your guide to safe and proper operation of this fireplace.

1.This appliance is only for use with the type of gas indicated on the rating plate. This appliance is not convertible for use with other gases unless a certified kit is used.

2.For propane/LP fireplace, do not place propane/LP supply tank(s) inside any structure. Locate propane/LP supply tank(s) outdoors. To prevent performance problems, do not use propane/LP fuel tank of less than 100 lbs. capacity.

3.If you smell gas

•shut off gas supply.

•do not try to light any appliance.

•do not touch any electrical switch; do not use any phone in your building .

•immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

4.Never install the fireplace

•in a recreational vehicle

•where curtains, furniture, clothing, or other flammable objects are less than 42" from the front, top, or sides of the fireplace

•in high traffic areas

•in windy or drafty areas

5.This fireplace reaches high temperatures. Keep children and adults away from hot surfaces to avoid burns or clothing ignition. Fireplace will remain hot for a time after shutdown. Allow surfaces to cool before touching.

6.Carefully supervise young children when they are in the room with fireplace.

7.Do not modify fireplace under any circumstances. Any parts removed for servicing must be replaced prior to operating fireplace.

8.Turn fireplace off and let cool before servicing, installing, or repairing. Only a qualified service person should install, service, or repair the fireplace. Have burner system inspected annually by a qualified service person.

9.You must keep control compartments, burners, and circulating air passages clean. More frequent cleaning may be needed due to excessive lint and dust. Turn off the gas valve and pilot light before cleaning fireplace.

10.Have venting system inspected annually by a qualified service person. If needed, have venting system cleaned or repaired. See Cleaning and Maintenance, page 40.

11.Keep the area around your fireplace clear of combustible materials, gasoline, and other flammable vapor and liquids. Do not run fireplace where these are used or stored. Do not place items such as clothing or decorations on or around fireplace.

Continued on page 4

69D0023

3

IMPORTANT SAFETY INFORMATION

Continued from page 3

12.Do not use this fireplace to cook food or burn paper or other objects.

13.Never place anything on top of fireplace.

14.Do not use any solid fuels (wood, coal, paper, cardboard, etc.) in this fireplace. Use only the gas type indicated on rating plate.

15.This appliance, when installed, must be electrically grounded in accordance with local codes or in the absence of local codes, with the National Electrical Code, ANSI/NFPA 70, or the Canadian Electrical Code, CSA C22.1.

16.Do not obstruct the flow of combustion and ventilation air in any way. Provide adequate clearances around air openings into the combustion chamber along with adequate accessibility clearance for servicing and proper operation.

17.When the appliance is installed directly on carpeting, tile or other combustible material other than wood flooring, you must set appliance on a metal or wood panel or hearth pad extending the full width and depth of the appliance.

18.Do not use fireplace if any part has been exposed to or has been under water. Immediately call a qualified service person to arrange for replacement of the unit.

19.Do not operate fireplace if any log is broken.

20.Do not use a blower insert, heat exchanger insert, or any other accessory not approved for use with this fireplace.

21.Do not operate the fireplace with glass door removed, cracked, or broken.

IMPORTANT:

PLEASE READ THE FOLLOWING CAREFULLY

It is normal for fireplaces fabricated of steel to give off some expansion and/or contraction noises during the start up or cool down cycle. Similar noises are found with your furnace heat exchanger or car engine.

IMPORTANT:

PLEASE READ THE FOLLOWING CAREFULLY

It is not unusual for gas fireplace to give off some odor the first time it is burned. This is due to the manufacturing process.

Please ensure that your room is well ventilated during burn off — open all windows.

It is recommended that you burn your fireplace for at least ten (10) hours the first time you use it. Place the fan switch in the “OFF” position during this time.

WARNING	Never connect unit to private
	(non-utility) gas wells. This gas is
	commonly known as wellhead gas.
	We suggest that our gas hearth
	products be installed and
	serviced by professionals who
	are certified in the U.S. by the
	National Fireplace Institute®
	(NFI) as Gas Specialists.
	www.nficertified.org

4

69D0023

PRODUCT FEATURES AND CODE APPROVAL

PRODUCT SPECIFICATIONS

•This appliance has been certified for use with either natural or propane gas. See appropriate data plates.

•This appliance is not for use with solid fuels.

•The appliance is approved for bedroom or bedsitting room installations.

•The appliance must be installed in accordance with local codes if any. If none exist use the current installation code. ANSI Z223.1/NFPA 54 in the USA, CAN/CGA B149 in Canada.

•This appliance is mobile home approved.

•The appliance must be properly connected to a venting system.

•The appliance is not approved for closet installations.

•This appliance is approved to be vented with Simpson-Duravent and Selkirk-Metalbestos Direct Vent Components.

NOTE: For illustration purposes only, all drawings show the Simpson-Duravent System.

The efficiency rating of this appliance is a product thermal efficiency rating determined under continuous operating conditions and was determined independently of any installed system.

Thermal Efficiency = up to 80%

Remote Control

Hi/Lo Knob

Off/Pilot/On Knob

Ignitor

On/Off/RS Switch

Blower Control

Figure 1 - CDVR33, CDVT33, CDVR36 and CDVT36 Fireplace

CODE APPROVAL

Direct Vent type appliances draw all combustion air from outside of the dwelling through the vent pipe.

These appliances have been tested by CSA and found to comply with the established standards for DIRECT VENT GAS FIREPLACE HEATERS in the USA and Canada as follows:

LISTED VENTED GAS FIREPLACE HEATER

TESTED TO: ANSI Z21.88/CSA 2.33 STANDARDS

A manufactured home (USA only) or mobile home OEM installation must conform with the Manufactured Home Construction and Safety Standard, Title 24 CFR, Part 3280, or when such a standard is not applicable, the Standard for Manufactured Home Installations, ANSI/NCSBCS A225.1, or Standard for Gas Equipped Recreational Vehicles and Mobile Housing, CSA Z240.4.

69D0023

5

PRE-INSTALLATION INFORMATION

The classification “noncombustible material” includes, but is not limited to stone, brick and mortar. Noncombustibles are safe to overlay the black-painted metal face (including radiant plates) and do not pose a fire hazard. Do not allow any noncombustible finish material to extend past or interfere with fireplace opening.

The classification “combustible material” includes, but is not limited to plywood, drywall and particle board. Combustible materials may contact the sides, bottom or back of firebox. Do not overlay the black painted face with combustible materials.

INSTALLING ABOVE 2000 FEET

•In the USA, the appliance must be derated 4% for every 1,000 ft above 2,000 ft elevations.

•In Canada, these appliances are certified for altitudes of 0 – 2000 ft, and must be de-rated by 10 percent for installations between 2000 and 4,500 ft. (derate an additional 4% for every 1,000 ft. above 4,500 ft. elevations).

ORIFICE SIZES, PRESSURES AND BTUs

NATURAL GAS					PROPANE GAS
Manifold Press: (W.C.)				3.5"	Manifold Press: (W.C.)			10"
Maximum Supply Pressure				10.5"	Maximum Supply Pressure			13"
Minimum Supply Pressure				4.5"	Minimum Supply Pressure			11"
		CDVR36			CDVT36		CDVR33		CDVT33
Model Number
		Natural		Propane	Natural	Propane	Natural	Propane	Natural	Propane
Max. Btu/hr Input		20,000		20,000	20,000	20,000	18,000	18,000	18,000	18,000
Min. Btu/hr Input		15,000		15,000	15,000	15,000	10,000–13,000	10,000–13,000	10,000–13,000	10,000–13,000
Orifice size		#44		1.35mm	#44	1.35mm	#45	1.28mm	#45	1.28mm
(as shipped)

BEFORE YOU START

Read this homeowner manual thoroughly and follow all instructions carefully. Inspect all contents for shipping damage and immediately inform your dealer if any damage is found. Do not install any unit with damaged, incomplete, or substitute parts. Check your packing list to verify that all listed parts have been received. You should have the following:

• Fireplace (Firebox and Burner System)		•	Rock Wool
•	Log Set	•	Volcanic Rock
ITEMS REQUIRED FOR INSTALLATION
Tools:		Building Supplies:
•	Phillips Screwdriver	•	Framing Materials
•	Hammer	•	Wall Finishing Materials
• Saw and/or saber saw		•	Caulking Material (Noncombustible)
•	Level	• Fireplace Surround Material (Noncombustible)
•	Measuring Tape	• Piping Complying with Local Codes
• Electric Drill and Bits		•	Tee Joint
•	Pliers	• Pipe Sealant Approved for use with Propane/LPG
•	Square		(Resistant to Sulfur Compounds)
•	Pipe Wrench

6

69D0023

FIREPLACE FRAMING

FIREBOX FRAMING FOR CDVR33/36

WARNING

Do not fill spaces around firebox with

Firebox framing can be built before or after the appliance

is set in place. Construct firebox framing following Figure

insulation or other materials. This

2 and the chart below for your specific installation require-

could cause a fire.

ments. See Figure 5 on Page 9 for firebox dimensions. The

framing headers may rest on the top of the firebox standoffs.

Do not bring headers below top of standoffs.

The firebox may be installed directly on a combustible floor

or raised on a platform of an appropriate height. When the

firebox is installed directly on carpeting, tile, or other com-

CDVR33

CDVR36

bustible material, other than wood flooring, the firebox shall

A

331/4"

371/2"

be installed on a metal or wood panel extending the full width

and depth of the enclosure.

B

35"

381/8"

C

211/2"

223/8"

D

103/4"

11"

E

483/4"

527/16"

F

241/2"

263/16"

D

H

G

133/4"

151/4"

F

H

341/2"

371/16"

C

G

C

A

E

CDVR33 and CDVR36 Corner Installation

G

A
				1/2" or 5/8"

CDVR33 and CDVR36 Inside Chase Installation

C

		G
B
A	A	1/2" or 5/8"
	CDVR33 and CDVR36 Recessed Installation or
CDVR33 and CDVR36	Outside Chase
Stud Location	Figure 2 - Framing Dimensions

69D0023

7

FIREPLACE FRAMING

FIREBOX FRAMING FOR CDVT33/36

Firebox framing can be built before or after the appliance is set in place. Construct firebox framing following Figure 3 and the chart below for your specific installation requirements. See Figure 4 on Page 10 for firebox dimensions. The framing headers may rest on the top of the firebox standoffs. Do not bring headers below top of standoffs.

The firebox may be installed directly on a combustible floor or raised on a platform of an appropriate height. When the firebox is installed directly on carpeting, tile, or other combustible material, other than wood flooring, the firebox shall be installed on a metal or wood panel extending the full width and depth of the enclosure.

	WARNING	Do not fill spaces around firebox with
		insulation or other materials. This
		could cause a fire.

H	D

	CDVT33	CDVT36
A	331/4"	371/2"
B	35"	381/8"
C	211/2"	223/8"
D	103/4"	11"
E	483/4"	527/16"
F	241/2"	263/16"
G	133/4"	151/4"
H	341/2"	371/16"

	F
	G
C
A	C

E

CDVT33 and CDVT36 Corner Installation

G

A
				1/2" or 5/8"

CDVT33 and CDVT36 Inside Chase Installation

C

G

B

A						A
									1/2" or 5/8"

CDVT33andCDVT36StudLocation	CDVT33 and CDVT36 Recessed Installation or Outside Chase
	Figure 3 - Framing Dimensions

8

69D0023

PRE-INSTALLATION INFORMATION

	CDVT33	CDVT36
A	331/4"	371/2"
B	35"	381/8"
C	1311/16"	151/4"
D	33"	371/16"
E	343/4"	373/8"
F	143/16"	153/4"
G	213/8"	217/8"
H	3111/16"	341/2"
I	73/8"	9"
J	273/16"	291/16"
K	153/16"	203/8"
L	297/8"	32"
M	161/2"	189/16"
N	25/16"	23/8"
O	73/16"	57/16"

Figure 4 - CDVT33 and

CDVT36

Fireplace Dimensions

	CDVR33	CDVR36
A	331/4"	371/2"
B	35"	381/8"
C	133/4"	151/4"
D	33"	371/16"
E	343/4"	373/8"
F	1311/16"	153/4"
G	213/8"	217/8"
H	3111/16"	341/2"
I	2115/16"	253/16"
J	273/16"	291/16"
K	153/16"	203/8"
L	297/8"	32"
M	513/16"	189/16"
N	25/16"	23/8"
O	73/16"	57/16"

Figure 5 - CDVR33 and

CDVR36

Fireplace Dimensions

G

M

C

Framing

Dimension

I	5/8"	F
	1/2"

Finishing	D	Nailing Tabs Will Accommodate
Spacers		1/2" or 5/8" Finishing Material
113/16"	L
11/4"
		5/8"
21/2"		1/2"
		B
J		Framing	E
K		Dimension
		H
		1/2"
15/16"		5/8"
		N
A			O
Framing Dimension
	G
M
		C
		Framing
		Dimension
	5/8"	F
	1/2"
Finishing	D	Nailing Tabs Will Accommodate
Spacers		1/2" or 5/8" Finishing Material
11/4"	L
		5/8"
		1/2"
		B"
J		Framing	E
		Dimension
K
		H	I
		1/2"
15/16"		5/8"
		N
A			O
Framing Dimension

69D0023

9

PRE-INSTALLATION INFORMATION

FIREPLACE LOCATION

Plan for the installation of your appliance. This includes determining where the unit is to be installed, the vent configuration to be used, framing and finishing details, and whether any optional accessories (i.e. blower, wall switch, or remote control) are desired. Consult your local building code agency to ensure compliance with local codes, including permits and inspections.

The following factors should be taken into consideration:

•Clearance to side-wall, ceiling, woodwork, and windows. Minimum clearances to combustibles must be maintained.

•This fireplace may be installed along a wall, across a corner, or use an exterior chase. See Figure 6 for suggested locations.

•Location should be out of high traffic areas and away from furniture and draperies due to heat from appliance.

•Never obstruct the front opening of the fireplace.

•Do not install in the vicinity where gasoline or other flammable liquids may be stored.

•Vent pipe routing. See Venting section found in this manual for allowable venting configurations.

•These units can be installed in a bedroom. See National Fuel Gas Code ANSI Z233.1/NFPA 54 — (current edition), the Uniform Mechanical Code — (current edition), and Local Building Codes for specific installation requirements.

A	Flat on Wall
B	Cross Corner
C	Island**
D	Room Divider*
E	Flat on Wall Corner*
F	Chase Installation
Y	4" Minimum

E	A		B
Y
		C	X
D
Y
	F

Figure 6 - Locating Gas Fireplace

**Island (C) and room divider (D) installation is possible as long as the horizontal portion of vent system (X) does not exceed 20'. See Installing Horizontal Termination Configuration on pages 18 and 19.

*When you install your fireplace in (D) room divider or (E) flat on wall corner positions (Y), a minimum of 4" clearance must be maintained from perpendicular wall and front of fireplace.

10

69D0023

CLEARANCES

CLEARANCES TO COMBUSTIBLES

WARNING

Follow these instructions carefully to ensure safe installation. Failure to follow instructions exactly can create a fire hazard.

The appliance cannot be installed on a carpet, tile or other combustible material other than wood flooring. If installed on carpet or vinyl flooring, the appliance shall be installed on a metal, wood or noncombustible material panel extending full width and depth of the appliance.

72” Minimum (CDV33)

71" Minimum (CDV36)	12"
	Maximum
	Depth
	12" Min. for CDV33
	13” Min. for CDV36

Minimum 6" from both

side walls (CDV33) Minimum 4” from both

side walls (CDV36)

Figure 7 - Clearances

MANTEL CLEARANCES

NOTE: The combustible area above the facing must not protrude more than 3/4" from the facing. If it does, it is considered a mantel and must meet the mantel requirements listed in this manual.

69D0023

11

SECURING FIREPLACE TO FLOOR OR FRAMING

The fireplace must be secured to the floor and/or to framing studs as shown in Figure 8. Use two (2) wood screws or masonry/ concrete screws to secure fireplace to the floor. Use four (4) screws to attach fireplace to framing. The side nailing flanges are 1/2" or 5/8" to accommodate different wall thickness.

Drywall Support Tabs (Do Not Use for Framing or Header)

Framing

Nailing

Flange

Screws

	Framing
Nailing	Nailing
Flange	Flange
	Screws

	Screws	Nailing
		Flange

Figure 8 - Securing Fireplace to Floor and Framing Studs (CDVT36 shown)

12

69D0023

INSTALLATION INFORMATION

FINISHING MATERIAL

NOTE: Any wiring (i.e. remote control, wall switch, and optional fan) must be done prior to final finishing to avoid costly reconstruction.

WARNING

Never obstruct or modify the air inlet or outlet grills (louvers). This may create a fire hazard.

Only noncombustible materials (i.e. brick, tile, slate, steel, or other materials with a UL fire rating of Zero) may be used to cover the black surface of the appliance. A 300°F minimum adhesive may be used to attach facing materials to the black surface. If joints between the finished wall and the fireplace surround are sealed, a 300°F minimum sealant material (General Electric RTV103 or equivalent) must be used.

WARNING

VENT INSTALLATION

Read all instructions completely and thoroughly before attempting installation. Failure to do so could result in serious injury, property damage or loss of life. Operation of improperly installed and maintained venting system could result in serious injury, property damage or loss of life.

	WARNING	Failure to follow these
		instructions will void the
		warranty.

INSTALLATION PRECAUTIONS

Consult local building codes before beginning the installation. The installer must make sure to select the proper vent system for installation. Before installing vent kit, the installer must read this fireplace manual and vent kit instructions.

Only a qualified installer/service person should install venting system. The installer must follow these safety rules:

•Wear gloves and safety glasses for protection.

•Use extreme caution when using ladders or when on rooftops.

•Be aware of electrical wiring locations in walls and ceilings. The following actions will void the warranty on your venting system:

•Installation of any damaged venting component.

•Unauthorized modification of the venting system.

•Installation of any component part not manufactured or approved by MHS.

•Installation other than permitted by these instructions.

69D0023

13

VENT INSTALLATION

REAR

WARNING

VENT INSTALLATION

This fireplace must be vented to the outside. The venting system must NEVER be attached to a chimney serving a separate solid fuel burning appliance. Each gas appliance must use a separate vent system. Do not use common vent systems.

GWARNIING

Horizontal sections of this vent system require a minimum of 3" clearances to combustibles at the top of the flue and 1" clearance at the sides and bottom until the flue penetrates the outside wall. A minimum 1" clearance all around the flue is acceptable at this point of penetration.

Vertical sections of this vent system require a minimum of 1" clearance to combustibles on all sides of the pipe.

A Minimum of 3" Clearance to the Top Is Required Along Horizontal Length until Flue Pipe Penetrates Outside Wall.

	1"
3"	1"
	1"

A Minimum 1"

Clearance to

Combustibles

Permitted All

Around Flue

at Outside

Wall

Figure 9 -

Combustible

Clearances for

Vent Pipe -

CDVR36 and CDVR33

14

69D0023

VENT INSTALLATION

TOP VENT INSTALLATION

WARNING

This fireplace must be vented to the outside. The venting system must NEVER be attached to a chimney serving a separate solid fuel burning appliance. Each gas appliance must use a separate vent system. Do not use common vent systems.

		Horizontal sections of this vent system
		require a minimum of 3" clearances to
	WARNING	combustibles at the top of the flue and 1"
		clearance at the sides and bottom until the
		flue penetrates the outside wall. A minimum
		1" clearance all around the flue is acceptable
		at this point of penetration.
		Vertical sections of this vent system require
		a minimum of 1" clearance to combustibles
		on all sides of the pipe.

Figure 10 -

Combustible Clearances

for Vent Pipe,

CDVT33 and CDVT36

A Minimum of 3" Clearance to the Top Is Required Along Horizontal Length until Flue Pipe Penetrates Outside Wall.

1"

3" 1"

1"

A Minimum 1"

Clearance to

Combustibles

Permitted All

Around Flue

at Outside

Wall

69D0023

15

VENT INSTALLATION

INSTALLATION PLANNING

There are two basic types of direct-vent installation:

•Horizontal Termination

•Vertical Termination

It is important to select the proper length of vent pipe for the type of termination you choose. It is also important to note the wall thickness.

FOR HORIZONTAL TERMINATION

Select the amount of vertical rise desired. All horizontal run of venting must have 1/4" rise for every 12" of run towards the termination.

You may use up to three 90° elbows in this vent configuration. See

Horizontal Termination Configurations on pages 21 and 22.

FOR VERTICAL TERMINATION

Measure the distance from the fireplace floor to the ceiling. Add the ceiling thickness, the vertical rise in an attic or second story, and allow

WARNING	Never run the vent pipe level
	or downward. This may cause
	excessive temperatures which
	could cause a fire.

for sufficient vent height above the roof line.

NOTE: You may use two 45° elbows in place of a 90° elbow. You must follow rise to run ratios when using 45° elbows. The appliance is approved for use with three 90° elbows maximum or a combination of 90° and 45° elbows up to a maximum of 270°.

For two-story applications, firestops are required at each floor level. If an offset is needed in the attic, additional pipe and elbows will be required.

You may use a chase with a vent termination with exposed pipe on the exterior of the house. See Installing Vent System in a Chase below. If pipe is enclosed in chase, it is not exposed.

It is very important that the venting system maintain its balance between the combustion air intake and the flue gas exhaust. Certain limitations apply to vent configurations and must be strictly followed.

INSTALLING A VENT SYSTEM IN AN OUTSIDE CHASE

A chase is a vertical boxlike structure built to enclose venting that runs along the outside of a building. A chase is required for such venting.

NOTICE

Treatment of firestops and construction of the chase may vary from building type to building type. These instructions are not substitutes for the requirements of local building codes. You must follow all local building codes.

NOTICE

When installing in a chase, you should insulate the chase as you would the outside walls of your home. This is especially important in cold climates. Insulation should be considered a combustible material. Maintain proper clearances to all combustible materials.

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