Desa CD36RN Owner's manual

DIRECT-VENT FIREPLACE

OWNER’S OPERATION AND INSTALLATION MANUAL

NATURAL GAS MODELS

(V)CD36RN, (V)CD36RNE

PROPANE/LP GAS MODELS

(V)CD36RP, (V)CD36RPE

NATURAL GAS MODELS

(V)CD36TN, (V)CD36TNE,

PROPANE/LP GAS MODELS

(V)CD36TP, (V)CD36TPE

For more information, visit www.desatech.com

WARNING: If the information in this manual is not





         





— WHAT TO DO IF YOU SMELL GAS

 

• Do not touch any electrical switch; do not use any



 



 



 -







www.desatech.com

116035-01J2

SAFETY

  

 

alteration, service or

maintenance can cause

   -



for correct installation

  -

  

additional information

   -





-

stalled in an aftermarket,*

 

 

-





     

   

   

   

   







State of Massachusetts:

   



-



   

  

chemicals known to the State

of California to cause cancer or

-







    -

    

    



   

   







This replace must be installed by a qualied

(certied or licensed) service person. It has

a sealed gas combustion chamber that uses

a coaxial pipe (pipe within a pipe and having

the same center) venting system. It brings in

fresh air for combustion through the outer pipe

and combustion gases are exhausted through

the inner pipe. If the glass door assembly and

venting pipe are not properly seated, con-

nected and sealed, carbon monoxide leakage

(spillage) can occur.

TABLE OF CONTENTS

Safety .................................................................. 2

Product Identication ........................................... 4

Local Codes......................................................... 4

Product Features ................................................. 5

Pre-Installation Preparation ................................. 5

Location of Termination Cap ................................ 9

Requirements for the Commonwealth of

Massachusetts............................................... 10

Venting Installation..............................................11

Fireplace Installation.......................................... 22

Operation ........................................................... 32

Inspecting Burners............................................. 37

Cleaning and Maintenance ................................ 38

Troubleshooting ................................................. 39

Specications .................................................... 45

Replacement Parts ............................................ 45

Service Hints ..................................................... 45

Technical Service............................................... 45

Parts .................................................................. 46

Accessories ....................................................... 52

Warranty ..............................................Back Cover

www.desatech.com

116035-01J 3

   Early signs

of carbon monoxide poisoning resemble the

u, with headaches, dizziness or nausea. If

you have these signs, the replace may not

be working properly. 

Have replace serviced. Some people are

more affected by carbon monoxide than oth-

ers. These include pregnant women, people

with heart or lung disease or anemia, those

under the inuence of alcohol and those at

high altitudes.

 Propane/LP

and natural gas are odorless. An odor-making

agent is added to the gas. The odor helps you

detect a gas leak. However, the odor added to

the gas 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 replace.

    



    

-







-







   











WARNING: Do not allow fans







SAFETY

Continued

    







  

    







-



-

   

adults away from hot surface to



     

-



-

dren when they are in the room



    

   

   



    



1. For propane/LP replace, 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 lb. capacity.

2. 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

• if you cannot reach you gas supplier, call

the re department.

www.desatech.com

116035-01J4

3. Never install the replace

• in a recreational vehicle

• in windy or drafty areas where curtains

or other combustible (ammable) objects

can make contact with the fireplace

front

• in high trafc areas

4. Turn fireplace off and let cool before

servicing, installing or repairing. Only a

qualied service person should install,

service or repair this replace. Have re-

place inspected annually by a qualied

service person.

5. You must keep control compartments,

burners and circulating air passages

clean. More frequent cleaning may be

needed due to excessive lint and dust

from carpeting, bedding material, etc.

Turn off the gas valve and pilot light before

cleaning replace.

6. Have venting system inspected annually by

a qualied service person. If needed, have

SAFETY

Continued

PRODUCT IDENTIFICATION

Figure 1 - Top and Rear Direct-Vent Fireplaces

Rear Vent

Flue Collar

Nailing

Flange

Top Vent

Flue Collar

Door Latch

Log Set

Ember

Tray

Junction

Box

Lower Louver Panel

Control Valve Variable

Input Adjustment

Piezo Ignitor with

Optional Remote and

Blower Control Mount

Upper

Louver

Panel

Glass Door

Assembly

LOCAL CODES

venting system cleaned or repaired. See

Cleaning and Maintenance, page 38.

7. Do not use any solid fuels (wood, coal,

paper, cardboard, etc.) in this replace.

Use only the gas type indicated on re-

place nameplate.

8. 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.

9. Do not use replace if any part has been

exposed to or under water. Immediately

call a qualied service person to arrange

for replacement of the unit.

10. Do not operate replace if any log is

broken.

11. Do not operate replace with glass door

removed, cracked or broken.

12. Provide adequate clearances around air

openings.

Install and use replace with care. Follow all

local codes. In the absence to local codes,

use the current National Fuel Gas Code ANSI

Z223.1/NFPA 54* (USA).

*Available from:

American National Standards Institute, Inc.

1430 Broadway

New York, NY 10018

National Fire Protection Association, Inc.

Batterymarch Park

Quincy, MA 02269

www.desatech.com

116035-01J 5

PRODUCT FEATURES

Figure 2 - Common Fireplace Locations

Flush with

a wall

Through exterior wall

enclosed in a chase

Corner

installation

• Your replace is designed to be used in

zero clearance installations. Wall or framing

material can be placed directly against any

exterior surface on the back, sides or top of

your replace, except where standoff spac-

ers are integrally attached. If standoff spac-

ers are attached to your replace, these

spacers can be placed directly against wall

or framing material. See framing details on

page 7.

• If you plan on installing a television or

entertainment center recessed above

your replace, it is recommended that you

maintain a minimum 18" above top of louver

opening.

These are a few facts that can help you under-

stand and enjoy your direct-vent replace:

• The CD36R dedicated rear vent is best suited

for ush or corner installations when vented

horizontally through an exterior wall.

• The CD36T dedicated top vent is suited

for any application where height is nec-

essary to terminate the venting system

either through the roof (vertical) or to gain

sufcient height and offset to vent to an

outside/exterior wall (horizontal).

• The vent pipe installation is very important

to allow for proper operation. You must se-

lect the appropriate unit for your application

and follow the venting instructions to plan

your installation.

• This replace may be installed in any room

of your house provided all local codes and

these installation instructions are followed.

• Models (V)CD36R/T are equipped with a

millivolt gas control system that does not

require electricity to operate. A piezo ignitor

is provided to light the pilot without using

matches or lighters.

• Models (V)CD36RE/TE are equipped with

an electronic ignition system that requires

120VAC to operate. An electrode ignitor

automatically lights the pilot ame when

the replace is turned on.

• All models can accept an optional circulat-

ing air blower when 120 VAC connection

is supplied. If you plan to install an optional

blower, do not forget to wire the replace

outlet when framing.

• Each time you turn on your replace, you

may notice some amount of condensation

on the inside of the replace glass. This

is normal and will disappear after 10-20

minutes of operation.

• Your direct-vent gas fireplace system

(replace and venting) is a balanced and

sealed gas operating unit. It is highly

efcient because it uses outside air for

combustion while independently heating

the indoor air.

PRE-INSTALLATION PREPARATION

LOCATION AND SpACE

REqUIREMENTS

Determine the safest and most efcient loca-

tion for your DESA Heating, LLC direct-vent

replace. Make sure that rafters and wall

studs are not in the way of the venting system.

Choose a location where the heat output is

not affected by drafts, air conditioning ducts,

windows or doors. Figure 2 shows some com-

mon locations. Be aware of all restrictions and

precautions before deciding the exact location

for your replace and termination cap.

When deciding the location of your replace,

follow these rules:

• Do not connect this replace venting to a

chimney ue serving a separate solid-fuel

burning replace or appliance.

• Due to high temperatures, do not locate this

replace in high trafc areas, windy or drafty

areas or near furniture or draperies.

• Proper clearances must be maintained.

• If your replace is to be installed directly on

carpeting, vinyl tile or any combustible ma-

terial other than wood, it must be installed

on a metal or wood panel extending the full

width and depth of the replace. See Figure

3, page 6.

www.desatech.com

116035-01J6

• When locating termination cap, it is impor-

tant to observe the minimum clearances

shown in Figure 7, page 7.

• If recessing into a wall, you can avoid extra

framing by positioning your replace against

an already existing framing member.

• Do not recess termination cap into a wall

or siding.

• You may paint the termination cap with

450º F (232º C) heat-resistant paint to

coordinate with the exterior nish.

• There must not be any obstruction such

as bushes, garden sheds, fences, decks

or utility buildings within 24" from the front

of the termination cap.

• Do not locate termination cap where exces-

sive snow or ice build up may occur. Be sure

to clear vent termination area after snow falls

to prevent accidental blockage of venting

system. When using snow blowers, do not

direct snow towards vent termination area.

PRE-INSTALLATION PREPARATION

Continued



The (V)CD36R/T direct vent gas replace

heater is packaged with:

• one box containing a 4-log set located on

the burner in the rebox

• one bag containing the owner’s manual

with installation instructions, operator’s

guide, and warranty information

• one bag of glowing ember material

• one bag of vermiculite hearth treatments

Remove the shrink-wrap securing the 2 carton

trays to the unit. Lift the top carton tray off

and remove the four corner posts. Discard

the bottom tray once the unit is moved into

position.

Note: On rear vent models you must remove

the berboard collar protector located on the

rear collar before installing the replace and

venting system. See Figure 4.

Figure 4 - Removing Collar Protector

(Rear Vent Fireplace)

Fire Board

Collar

Protector

Figure 3 - Fireplace Bottom Dimensions

15"

(38.1 cm)

36"

(91.4 cm)

25"

(63.5 cm)

CLEARANCES

Minimum clearances to combustibles for the

replace are as follows:

*Back and sides 0"/cm

Perpendicular walls 12" (30.5 cm)

Floor 0"/cm

Ceiling to louver opening 40" (102 cm)

Front 36" (91.4 cm)

Top of Standoffs 0"/cm

Vent Surfaces 1" (26 mm) (See venting

instructions for specific

vent clearances.)

Mantel Clearances (See Mantel Clearances

for specifics on mantel

clearances.)

Combustible material with a maximum thick-

ness of 5/8" may be ush with the top front

of replace.

    -



    

-



    

     



   











www.desatech.com

116035-01J 7

Figure 5 - Framing Clearances for

Installation Against an Exterior Wall

Figure 6 - Framing Clearances for Corner

Installation

PRE-INSTALLATION PREPARATION

Continued

FRAMING AND FINISHING

Figure 5 shows typical framing of this replace.

Figure 6 shows framing for corner installation.

All minimum clearances must be met.

For overall unit dimensions, framing allow-

ances and vent collar locations, see unit

dimensions in Figure 9, page 8.

For available accessories for this replace,

see Accessories on page 52. If you are us-

ing a separate combustible mantel piece,

refer to Figure 7 and Figure 8, page 8 for

proper height and clearances. You can install

noncombustible mantels at any height above

the replace.

Note: Noncombustible mantels may discolor!

(37.5 cm)

2"x4" Vertical

Double Stud

Ref. Mantel Depth Ref.

Mantel from

Top of Louver

Opening

1 16" (40.6 cm) A 14" (35.6 cm)

2 14" (35.6 cm) A 12" (30.5 cm)

3 12" (30.5 cm) B 10" (25.4 cm)

4 10" (25.4 cm) C 8" (20.3 cm)

5 8" (20.3 cm) D 6" (15.2 cm)

6 4" (10.1 cm) F 4" (10.1 cm)

7 2" (5.1 cm) G 2" (5.1 cm)

Figure 7 - Clearances for Combustible

Mantels

MANTEL CLEARANCES

Figure 7 shows projected mantel depths at

various heights above the top of the louver

opening. Figure 8, page 8, shows the mini-

mum allowable distances from various mantel

components in relation to the both sides of the

replace opening.

   

    -





   



    



used and the face are sealed with



(37.5 cm)

THESE DIMENSIONS

ALLOW FOR 1" OF

CLEARANCE AT THE

SIDES AND BACK OF

THE FIREPLACE.

HOWEVER,

0" CLEARANCE IS

ALSO PERMITTED

AT ALL SIDES WHEN

FRAMED.

21" (53.3 cm)

TO CENTER OF

TOP VENT

(37.5 cm)

TO NAILING

FLANGES

(144 cm)

(31 cm)

OPENING

(72.7 cm)

" ( 16.8 cm)

TO CENTER

OF REAR VENT

" (6.3 cm)

MIN. 1" (2.6 cm)

(92.1 cm)

12"

(30.5

cm)

2"x4" Flat Header

or Horizontal Cross

Member 12" Above

Top of Fireplace for

(V)CD36T Units Only

36"

(91.4 cm)

www.desatech.com

116035-01J8

PRE-INSTALLATION PREPARATION

Continued

Figure 9 - Rear/Top Common Dimensions

Figure 8 - Side Clearances for Combustible Materials

8" (20.4 cm)

TO CENTER OF

8" TOP VENT

(37.5 cm)

TO NAILING

FLANGES

5/8"

(1.6 cm)

36"

(91.4 cm)

FACE DIM.

(92.1 cm)

FACE DIM.

(39 cm)

(90.8 cm)

2 "

(5 cm)

25"

(63.5 cm)

TO CENTER

OF 8"

REAR VENT

37" (94 cm)

TO NAILING

FLANGE

" (11.4 cm)

ELECTRICAL

INLET

8" (20.3 cm)

GAS SUPPLY

INLET

(93.4 cm)

(92.1 cm)

TO NAILING

FLANGE

(5 cm)

38"

(96.5 cm)

4" (10.2 cm)

TO NAILING

FLANGE

WALL SWITCH

WIREWAY

WALL SWITCH

WIREWAY

(6.4 cm)

33°

SAFE

ZONE

(3.8 cm)

(9.5 cm)

(15.2 cm)

(14 cm)

12"

(30.5 cm)

Perpendicular

Side Wall

Combustible

Material May

Be Used

Outer Surround

To Fireplace

Opening

www.desatech.com

116035-01J 9

Figure 10 - Minimum Clearances for Termination Cap

LOCATION OF TERMINATION CAP

Fixed

Closed

Openable

Fixed

Closed

TERMINATION CAP

AIR SUPPLY INLET

GAS METER RESTRICTED AREA

(TERMINATION PROHIBITED)

A = clearance above grade, veranda, porch, deck, or

balcony [*12" (30.5 cm) minimum]

B = clearance to window or door that may be opened

[6" (15 cm) min. for 10,000 Btu or less; 9" (23 cm) in US

if between 10,000 and 50,000, 12" (30 cm) in Canada

if between 10,000 and 100,000; 12" (30 cm) in US if

greater than 50,000, 36" (91 cm) in Canada if greater

than 100,000]

C = clearance to permanently closed window

[minimum 12" (30.5 cm) recommended to prevent

condensation on window]

D = vertical clearance to ventilated soffit located above the

terminal within a horizontal distance of 24" (61 cm) from

the center-line of the terminal [18" (45.7 cm) minimum]

E = clearance to unventilated soffit [12" (30.5 cm) minimum]

F = clearance to outside corner (see below)

G = clearance to inside corner (see below)

H = *not to be installed above a meter/regulator assembly

within 36" (91.4 cm) horizontally from the center line

of the regulator

I = clearance to service regulator vent outlet [*72" (182.9 cm)

minimum]

J = clearance to non-mechanical air supply inlet to building

or the combustion air inlet to any other fireplace

[6" (15 cm) min. for 10,000 Btu or less; 9" (23 cm) in US

if between 10,000 and 50,000, 12" (30 cm) in Canada

if between 10,000 and 100,000; 12" (30 cm) in US if

greater than 50,000, 36" (91 cm) in Canada if greater

than 100,000]

K = clearance to a mechanical air supply inlet [*In Canada,

6 ft. (1.83m) minimum; In US 3 ft. (91 cm) above if within

10 ft. (3 m) horizontally]

L = † clearance above paved side-walk or a paved driveway

located on public property [*84" (213.3 cm) minimum]

M = clearance under veranda, porch, deck

[*12" (30.5 cm) minimum ‡]

N = clearance above a roof shall extend a minimum of

24" (61 cm) above the highest point when it passes

through the roof surface and any other obstruction within

a horizontal distance of 18" (45.7 cm)

† vent shall not terminate directly above a side-walk or paved driveway which is located between two

single family dwellings and serves both dwellings*

‡ only permitted if veranda, porch, deck or balconey is fully open on a minimum of 2 sides beneath the floor*

* as specified in CAN/CSA B149 (.1 or .2) Installation Codes (1991) for Canada and U.S.A.

Note: Local codes or regulations may require different clearances

A = 6" (15.2 cm)

Inside Corner

B = 6" (15.2 cm)

C = Maximum depth of 48" (121.9 cm)

for recessed location

D = Minimum width for back wall of

recessed location -

Combustible - 38" (965 mm)

Noncombustible - 24" (61 cm)

E = Clearance from corner in

recessed location-

Combustible - 6" (15.2 cm)

Noncombustible - 2" (5.1 cm)

Outside Corner Recessed Location

G = 12" (30.5 cm) minimum clearance

Balcony with No Side Wall

Combustible &

Noncombustible

H = 24" (61 cm)

J = 20" (50.8 cm)

Balcony with Perpendicular Side Wall

Termination Clearances for Buildings with Combustible and Noncombustible Exteriors

Openable

www.desatech.com

116035-01J10

REQUIREMENTS FOR THE COMMONWEALTH OF

MASSACHUSETTS

For all side wall horizontally vented gas fueled

equipment installed in every dwelling, building or

structure used in whole or in part for residential

purposes, including those owned or operated by

the Commonwealth and where the side wall ex-

haust vent termination is less than seven (7) feet

above nished grade in the area of the venting,

including but not limited to decks and porches,

the following requirements shall be satised:



MONOXIDE DETECTORS

At the time of installation of the side wall horizon-

tal vented gas fueled equipment, the installing

plumber or gastter shall observe that a hard

wired carbon monoxide detector with an alarm

and battery backup is installed on the oor level

where the gas equipment is to be installed. In

addition, the installing plumber or gastter shall

observe that a battery operated or hard wired car-

bon monoxide detector with an alarm is installed

on each additional level of the dwelling, building or

structure served by the side wall horizontal vented

gas fueled equipment. It shall be the responsibility

of the property owner to secure the services of

qualied licensed professionals for the installation

of hard wired carbon monoxide detectors.

In the event that the side wall horizontally

vented gas fueled equipment is installed

in a crawl space or an attic, the hard wired

carbon monoxide detector with alarm and

battery back-up may be installed on the next

adjacent oor level.

In the event that the requirements of this

subdivision can not be met at the time of

completion of installation, the owner shall

have a period of thirty (30) days to comply with

the above requirements; provided, however,

that during said thirty (30) day period, a battery

operated carbon monoxide detector with an

alarm shall be installed.



Each carbon monoxide detector as required

in accordance with the above provisions shall

comply with NFPA 720 and be ANSI/UL 2034

listed and IAS certied.

SIGNAGE

A metal or plastic identication plate shall be

permanently mounted to the exterior of the

building at a minimum height of eight (8) feet

above grade directly in line with the exhaust

vent terminal for the horizontally vented gas

fueled heating appliance or equipment. The

sign shall read, in print size no less than 1/2" in

size, "GAS VENT DIRECTLY BELOW. KEEP

CLEAR OF ALL OBSTRUCTIONS".

INSpECTION

The state or local gas inspector of the side

wall horizontally vented gas fueled equipment

shall not approve the installation unless, upon

inspection, the inspector observes carbon

monoxide detectors and signage installed in

accordance with the provisions of 248 CMR

5.08(2)(a) 1 through 4.

EXEMPTIONS: The following equipment is ex-

empt from 248 CMR 5.08(2)(a) 1 through 4:

• The equipment listed in Chapter 10 entitled

"Equipment Not Required To Be Vented"

in the most current edition of NFPA 54 as

adopted by the Board; and

• Product Approved side wall horizontally

vented gas fueled equipment installed in a

room or structure separate from the dwell-

ing, building or structure used in whole or

in part for residential purposes.

MANUFACTURER REqUIREMENTS



When the manufacturer of Product Approved

side wall horizontally vented gas equipment

provides a venting system design or venting

system components with the equipment, the

instructions provided by the manufacturer for

installation of the equipment and the venting

system shall include:

• Detailed instructions for the installation of

the venting system design or the venting

system components; and

• A complete parts list for the venting system

design or venting system.



provided

When the manufacturer of a Product Ap-

proved side wall horizontally vented gas fu-

eled equipment does not provide the parts for

venting the ue gases, but identies "special

venting systems", the following requirements

shall be satised by the manufacturer:

•

The referenced "special venting system" in-

structions shall be included with the appliance

or equipment installation instructions; and

• The "special venting systems" shall be Prod-

uct Approved by the Board, and the instruc-

tions for that system shall include a parts list

and detailed installation instructions.

A copy of all installation instructions for all

Product Approved side wall horizontally

vented gas fueled equipment, all venting in-

structions, all parts lists for venting instruc-

tions, and/or all venting design instructions

shall remain with the appliance or equipment

at the completion of the installation.

www.desatech.com

116035-01J 11

VENTING INSTALLATION

NOTICE: Failure to follow these in-



NOTICE: Do not seal termination

 

   



INSTALLATION pRECAUTIONS

• Wear gloves and safety glasses for pro-

tection

• Use extreme caution when using ladders

or when on roof tops

• 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 com-

ponent

• Unauthorized modication of the venting sys-

tem (Do not cut or alter vent components)

• Installation of any component part not

manufactured or approved by DESA

• Installation other than as instructed by

these instructions



    

    



-







    -



    

   -



on the horizontal sections,

   









NOTICE: Read these instruc-

-



These models are tested and approved for

use with DESA Heating, LLC (direct-vent) pipe

components and terminations.

The venting system must terminate on the

outside of the structure and can not be at-

tached to a chimney or ue system serving a

separate solid fuel or gas burning appliance.

A direct-vent appliance must have its own

venting system. DO NOT common vent this

appliance.

These models are approved to be vented

either horizontally through an outside wall or

vertically through a roof or chase enclosure

using the following:

• When venting system terminates horizon-

tally on an outside wall, you may install

a standoff if the termination cap is to be

installed directly on a combustible nish

such as vinyl, wood, stucco, etc.

• Never run the vent downward as this may

cause excessive temperatures which could

cause a re.

• Vent pipe air space clearances to com-

bustibles are 1" on all sides except on the

horizontal sections, which requires 2" clear-

ance from the top of the pipe. Where the

termination cap penetrates a combustible

wall, 1" air space clearance is required.

• Have replace and selected vent compo-

nents on hand to help determine the exact

measurements when elbowing or offsetting.

Always use wall restops when penetrating

walls and restops when penetrating ceil-

ings or attic spaces.

• If using a venting conguration of only

horizontal venting with no vertical run, a

1/4" rise for every 12" of run toward the

termination is required.

WARNING: Read all instruc-



  

Failure to do so could result in





IMPORTANT: Do not seal vent cap to pipe.

Cap must be removable for servicing.

www.desatech.com

116035-01J12

INSTALLATION pLANNING

There are two basic types of direct-vent

installation:

• Horizontal Termination

• Vertical Termination

Horizontal Termination Installation

IMPORTANT: Horizontal square terminations

require only inner portion of wall restop. Hori-

zontal installations using round termination

require exterior portion of wall restop (see

Figure 20, page 15).

1. Set replace in its desired location and

determine route your horizontal venting

will take. Do not secure replace until all

venting has been installed. Some instal-

lations require sliding replace in and out

of position to make nal venting connec-

tions. Figures 18 through 25 on pages 14

through 17 show different congurations

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 replace.

2. Direct vent pipe sections and components

are designed with special twist-lock con-

nections.

Twist-Lock procedure: Female ends of

pipes have locking lugs (indentations).

These lugs will slide straight into match-

ing slots on male ends of adjacent pipes.

Push pipe sections together and twist

one section clockwise approximately one-

quarter turn until sections are fully locked

(see Figure 11).

Note: Horizontal runs of vent must be sup-

ported every three feet. Use wall straps

for this purpose.

3. Any straight pipe section, a 45° or 90°

elbow can be used when rst connecting

the venting system to replace. Elbows

are designed to twist-lock into any of four

90° positions to direct the venting system

to the desired location. IMPORTANT: Do

not attempt to alter the conguration of

elbow by cutting, twisting, bending, etc.

4. Assemble desired combination of pipe

and elbows to replace ue collar. If there

are long portions of venting run, preas-

sembled pipe sections may be installed

as subassemblies for convenience.

VENTING INSTALLATION

Continued

Figure 11 - Vent Pipe Connections

(Framing

Detail)

(29.2 cm)

" Inside Framing

(29.2 cm)

(21.6 cm)

Vent

pening

Combustible Wall

Vent Opening

Noncombustible Wall

Figure 12 - Vent Opening Requirements

Center

of Hole

5. 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 a

" x 11

" square hole. Cut and frame

square hole in exterior wall where vent will

be terminated. If wall being penetrated is

constructed of noncombustible material,

such as masonry block or concrete, a

" hole with zero clearance is accept-

able (see Figure 12).

Female

Locking Lugs

Male

Slots

www.desatech.com

116035-01J 13

VENTING INSTALLATION

Continued

WARNING: Do not recess





6.  Position

horizontal vent cap in center of 8

" round

hole and attach to exterior wall with four

wood screws provided. Before attaching

vent cap to exterior wall, run a bead of

non-hardening mastic (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 13).

   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 center

of the 11

" square hole and attach to

exterior wall with wood screws provided

(see Figure 14). Siding standoff must sit

ush against exterior fascia material.

7. 

 Fit outer and inner wall restop

into wall before connecting horizontal run

to vent cap (see Figure 15).

Carefully move replace, with vent assem-

bly attached, toward wall and insert vent

pipe into horizontal termination. The pipe

overlap should be a minimum of 1

Slide wall restop against interior wall sur-

face and attach with screws provided (see

Figure 16, page 14). See Figure 17, page

14, for horizontal termination details.

Place replace into position and shim with

noncombustible material, if needed. Nail

or screw side anges to framing to secure

unit in place. IMPORTANT: Make sure re-

place is level before securing. If replace

is not level it will not work properly.

Figure 13 - Installing Horizontal Vent Cap

(Noncombustible Exterior)

Wood Screw

Vent Cap

Figure 14 - Installing Siding Standoff

(Combustible Exterior Wall)

Cut Siding Away

to Fit Standoff

Screws

Standoff

Vent

Cap

Apply Mastic to

All Four Sides

Figure 15 - Installing Outer Wall Firestop

(Combustible Exterior Wall)

Inner Wall

Firestop

Inner Wall

Firestop

Outer Wall

Firestop

Apply Mastic to

All Four Sides

www.desatech.com

116035-01J14

Figure 16 - Installing Inner Wall Firestop

VENTING INSTALLATION

Continued

Figure 17 - Typical Horizontal

Termination Cap Mounting with

Additional Siding Standoff Installed

Siding Standoff

Screws

High Wind

Termination

Apply

Mastic to

Outside

Edge of

Standoff

Exterior Wall with Vinyl Siding

" x 11

Framed Opening

Maintain 1"

Minimum Air

Space Around

Outer Pipe When

Penetrating a Wall

Minimum Pipe

Overlap 1

Wall

Firestop

Direct-Vent

Pipe

WARNING: Never run vent

downward as this may cause

  



-

   







Figures 18 through 25 show different con-

gurations and alternatives for venting with

horizontal termination. Each gure includes

a chart with critical minimum and maximum

dimensions which MUST be met.

IMPORTANT: If using a venting conguration

of only horizontal venting with no vertical run,

a 1/4" rise for every 12" of run toward the

termination is required.



Recommended Applications for Rear Vent

Model (V)CD36R:

• Installation using cabinet surrounds

• Through wall using round or square

termination (up to a maximum of 18" of

horizontal pipe)

• Corner installation (Using one 45° elbow

and a maximum of 18" of horizontal pipe).

Figure 18 - Horizontal Termination

Congureation for Flush Installation

(Model (V)CD36R)

Inner Wall

Firestop

Vent

Cap

Pipe

Section

Horizontal

Square

Termination

Wall

Firestop

Straight/Adjustable

Pipe 18" Max.



 

" Min. 22" Max

NOTICE: Do not seal termination

 

   



www.desatech.com

116035-01J 15

GROUND FLOOR INSTALLATION

Recommended Applications for Rear Vent

Model (V)CD36T:

• Installation using cabinet surrounds

• Through wall using round or square termi-

nation (up to 24" horizontal pipe)

• Corner installation (Using one 90° elbow

and a maximum of 24" of horizontal pipe)

VENTING INSTALLATION

Continued

Figure 20 - Horizontal Termination

Conguration Round Termination

(Model (V)CD36T)

Figure 19 - Horizontal Termination

Conguration for Corner Installation

(Model (V)CD36R)

Figure 21 - Horizontal Termination

Conguration For Corner Installation

Using One 90° Elbow (Model (V)CD36T)

Figure 22 - Horizontal Termination

Conguration with Vertical Rise and One

90° Elbow (Model (V)CD36T)













" None 26" Max.

" Min. 1 ft. 30" Max.

" Min. 2 ft. 74" Max.

" Min. 3 ft. 98" Max.

94" Min. 4 ft. 122" Max.

106" Min. 5 ft. 146" Max.

159" Min. 9 ft. 20' Max.

Horizontal Square

Termination

Wall

Firestop

Straight/Adjustable

Pipe 18" Max.

Corner Installation

 

" Min. 24" Max

45°

Elbow

Wall

Firestop

Horizontal

Round

Termination

Exterior

Portion of Wall

Firestop (Round

Termination Only)

90°

Elbow

Wall

Firestop

Straight/

Adjustable

Pipe 24" Max.

Horizontal

Square

Termination

90°

Elbow

Corner Installation

 

" Min. 32

" Max

90° Elbow

Wall

Firestop

Square

Termination

Not to Exceed

(H) Limits

Required

for (V),

See Chart

for Pipe

Section

Required

www.desatech.com

116035-01J16



Re co m me nd ed Ap pl ic at i on s Mo de ls

(V)CD36R and (V)CD36T:

• Installations requiring vertical rise on build-

ing exterior.

• Installation using snorkel termination to

achieve 1 ft. above grade.

VENTING INSTALLATION

Continued

Figure 23 - Snorkel Termination Conguration For Below Ground Installation







The following congurations show the mini-

mum vertical rise requirements for a horizontal

system using two 90° elbows.

Figure 24 - Horizontal Termination Conguration For Venting Using Two 90° Elbows

(Model (V)CD36T)







Horizontal (H





7' Min. 10' Max

8' Min. 12' Max

9' Min. 14' Max

10' Min. 16' Max

11' Min. 18' Max

13' Min. 20' Max

Snorkel terminations are available for installa-

tions requiring a vertical rise on the exterior of

the building. If installing snorkel below grade

you must provide proper drainage to prevent

water from entering snorkel (see Figure 23).

Do not back ll around snorkel termination.

90°

Elbow

90°

Elbow

Snorkel

Termination

12"

Min.

12" Min.

Adequate

Drainage

Snorkel

Termination

Snorkel

Termination

90° Elbow

12" Min.

Wall

Firestop

www.desatech.com

116035-01J 17

VENTING INSTALLATION

Continued

Figure 25 - Horizontal Termination Conguration for Venting Using Three 90° Elbows

(Model (V)CD36T)



TERMINATION

Note: Vertical restrictor must be installed in

all vertical installations.

1. Determine the route your vertical venting

will take. If ceiling joists, roof rafters or

other framing will obstruct the venting

system, consider an offset (see Figure 26)

to avoid cutting load bearing members.

Note: Pay special attention to these instal-

lation 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 verti-

cal rise of the venting system and any

maximum horizontal offset limitations.

 When installing

the OSR58-30 offset, it must be turned

20° off center line (see Figure 27, page

18). This will give you the 1" clearance

to horizontal framing members that are a

minimum of 12" above replace.

2. Set replace in desired location. Drop a

plumb line down from ceiling to position

Figure 26 - 45° and 30° Offset with Wall

Strap



 



Horizontal (H





5' Min. 2' Max. 6' Max

6' Min. 3' Max. 8' Max

7' Min. 4' Max. 10' Max

8' Min. 5' Max. 12' Max

12' Min. 8' Max. 20' Max

20' Min. 8' Max. 20' Max

90°

Elbow

90°

Elbow

90°

Elbow

Roof Flashing

Wall

Strap

45°

Elbows

WS-58

Wall Strap

2 - 2 x 4

Vertical

Header

OSR58-30

30° Offset

Return

Horizontal

Frame Member

of replace exit ue. Mark center point

where vent will penetrate ceiling. Drill a

small locating hole at this point.

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.

1.5"

(38 mm)

12"

(305

mm)

1" (25 mm)

www.desatech.com

116035-01J18



1. Cut a 11

" square hole in ceiling using

locating hole as a center point. The open-

ing should be framed to 11

" x 11

(292 mm x 292 mm) inside dimensions,

as shown in Figure 12 on page 11 using

framing lumber the same size as ceiling

joists. If area above ceiling is an insulated

ceiling or an attic, nail restop from top

side. This prevents loose insulation from

falling into required clearance space. If

area above ceiling is a living space, in-

stall restop below framed hole. Firestop

should be installed with no less than three

nails per side (see Figure 28).

2. Assemble desired lengths of pipe and

elbows necessary to reach from replace

ue up through restop. Be sure all pipe

and elbow connections are fully twist-

locked (see Figure 11, page 12).

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

" x 11

" hole must be measured on

the horizontal; actual length may be larger

depending on pitch of roof. There must

be a 1" clearance from the vent pipe to

combustible materials. Frame opening as

shown in Figure 12, page 12.

4. Connect a section of pipe and extend up

through hole.

VENTING INSTALLATION

Continued

Figure 28 - Installing Firestop

If area above is a living space, install

restop below framed hole.

If area above is an attic or insulated area,

install restop above framed hole.

Note: If an offset is needed to avoid obstruc-

tions, you must support vent pipe every 3

feet. Use wall straps for this purpose (see

Figure 26, page 17). Whenever possible,

use 45° elbows instead of 90° elbows. The

45° elbow offers less restriction to the ow

of ue gases and intake air.

5. Place ashing over pipe section(s) ex-

tending through roof. Secure base of

ashing to roof and framing with roong

nails. Be sure roong material overlaps

top edge of ashing as shown in Figure

26, page 17. 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 10

on page 9.

Note: You must increase vent height for

steep roof pitches. Nearby trees, adjoining

rooines, steep pitched roofs and other

similar factors may cause poor draft or

down-drafting in high winds. Increasing

vent height may solve this problem.

7. Twist-lock vent cap onto last section of

vent pipe.

Note: If vent pipe passes through any oc-

cupied areas abovethe rst oor, including

storage spaces and closets, you must enclose

pipe. You may frame and sheetrock enclosure

with standard construction material. Make

sure and meet minimum allowable clearances

to combustibles. Do not ll any required air

spaces with insulation.

Figure 27 - OSR58-30 Offset and Return

for (V)CD36T Series Units

3" Offset

Offset

1" Clearance

1.5"

1.5" Clearance

20°

3.5"

www.desatech.com

116035-01J 19

VENTING INSTALLATION

Continued





Figures 29 and 30 show two different congu-

rations for vertical termination.

VERTICAL VENT INSTALLATIONS USING

MULTIPLE 90° ELBOWS (V)CD36R REAR

VENT

Figure 29 - Vertical Venting

Conguration using One 90° Elbow

(Model (V)CD36R with Vertical Round

High Wind Termination)

Figure 30 - Vertical Venting

Conguration using Three 90° Elbows

(Model (V)CD36R with Vertical Round

High Wind Termination)











Horizontal



















Horizontal (H





8' Min. 2' Max. 12' Min. 8' Max

8' Min. 2' Max. 14' Min. 11' Max

8' Min. 2' Max. 16' Min. 14' Max

8' Min. 2' Max. 18' Min. 17' Max

8' Min. 2' Max. 20' Min. 20' Max

8' Min. 2' Max. 40' Max. 20' Max

Note: Vertical (V

) + Vertical (V

) = 40' Max.

Max. Horizontal Above 20' Vertical = 20'



 

8' Min. 2' Max

40' Max. 2' Max

90°

Elbow

90° Elbow

90°

Elbow

Note: Install a

VR-58 vertical

restrictor ring

into inner pipe

section prior to

attaching vent

termination cap.

Note: Install a

VR-58 vertical

restrictor ring

into inner pipe

section prior to

attaching vent

termination cap.

www.desatech.com

116035-01J20

VENTING INSTALLATION

Continued





Figures 31 and 34 show four different congu-

rations for vertical termination.

VERTICAL VENT INSTALLATIONS USING

MULTIPLE 90° ELBOWS (V)CD36T TOP

VENT

Figure 33 - Vertical Venting

Conguration Using Two 90° Elbows

(Model (V)CD36T with Vertical Round

High Wind Termination)

Note: Vertical (V

) + Vertical (V

) = 40' Max.

Max. Horizontal Above 14' Vertical = 20'

Figure 31 - Vertical Venting

Conguration using Three 90° Elbows

(Model (V)CD36T with Vertical Round

High Wind Termination)













Horizontal



8' Min. 9' Max

9' Min. 11' Max

10' Min. 13' Max

12' Min. 17' Max

14' Min. 20' Max





Horizontal (H





Horizontal (H





8' Min. 5' Max

10' Min. 8' Max

12' Min. 11' Max

14' Min. 14' Max

16' Min. 17' Max

18' Min. 20' Max

40' Max. 20' Max



 

8' Min. 6' Max

9' Min. 8' Max

10' Min. 10' Max

12' Min. 14' Max

14' Min. 18' Max

40' Max. 20' Max

Note: Install a

VR-58 vertical

restrictor ring

into inner pipe

section prior to

attaching vent

termination cap.

90° Elbow

Note: Install a

VR-58 vertical

restrictor ring

into inner pipe

section prior to

attaching vent

termination cap.

90°

Elbow

Note: Install a

VR-58 vertical

restrictor ring

into inner pipe

section prior to

attaching vent

termination

cap.

Figure 32 - Vertical Venting

Conguration Using Two 90° Elbows

(Model (V)CD36T with Vertical Round

High Wind Termination)

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