Burnham SCG User Manual

INSTALLATION, OPERATING AND

SERVICE INSTRUCTIONS FOR

SCG™

GAS - FIRED BOILER

As an ENERGY STAR^®Partner, Burnham Hydronics has determined that the SCG meets the ENERGY

STAR^®guidelines for energy efﬁciency established by the United States Environmental Protection Agency (EPA).

For service or repairs to boiler, call your heating contractor. When seeking information on

boiler, provide Boiler Model Number and Serial Number as shown on Rating Label.

Boiler Model Number

Boiler Serial Number

Installation Date

SCG _ _ _ _ - _ _ _

_ _ _ _ _ _ _ _

Heating Contractor

Phone Number

Address

8140705R3-1/07

Price - $5.00

WARNING

This boiler requires regular maintenance and service to operate safely. Follow the

instructions contained in this manual.

Improper installation, adjustment, alteration, service or maintenance can cause property

damage, personal injury or loss of life. Read and understand the entire manual before

attempting installation, start-up operation, or service. Installation and service must be

performed only by an experienced, skilled, and knowledgeable installer or service agency.

This boiler must be properly vented.

This boiler needs fresh air for safe operation and must be installed so there are provisions

for adequate combustion and ventilation air.

The interior of the venting system must be inspected and cleaned before the start of the

heating season and should be inspected periodically throughout the heating season for any

obstructions. A clean and unobstructed venting system is necessary to allow noxious

fumes that could cause injury or loss of life to vent safely and will contribute toward

maintaining the boiler's efficiency.

Installation is not complete unless a pressure relief valve is installed into the tapping

located on top of appliance. - See the Water Piping and Trim Section of this manual for

details.

This boiler is supplied with safety devices which may cause the boiler to shut down and not

re-start without service. If damage due to frozen pipes is a possibility, the heating system

should not be left unattended in cold weather; or appropriate safeguards and alarms should

be installed on the heating system to prevent damage if the boiler is inoperative.

This boiler contains very hot water under high pressure. Do not unscrew any pipe fittings

nor attempt to disconnect any components of this boiler without positively assuring the

water is cool and has no pressure. Always wear protective clothing and equipment when

installing, starting up or servicing this boiler to prevent scald injuries. Do not rely on the

pressure and temperature gauges to determine the temperature and pressure of the boiler.

This boiler contains components which become very hot when the boiler is operating. Do

not touch any components unless they are cool.

Boiler materials of construction, products of combustion and the fuel contain alumina, silica,

heavy metals, carbon monoxide, nitrogen oxides, aldehydes and/or other toxic or harmful

substances which can cause death or serious injury and which are known to the state of

California to cause cancer, birth defects and other reproductive harm. Always use proper

safety clothing, respirators and equipment when servicing or working nearby the appliance.

Failure to follow all instructions in the proper order can cause personal injury or death.

Read all instructions, including all those contained in component manufacturers manuals

which are provided with the boiler before installing, starting up, operating, maintaining or

servicing.

Keep boiler area clear and free from combustible materials, gasoline and other flammable

vapors or liquids.

All cover plates, enclosures and guards must be in place at all times.

NOTICE

This boiler has a limited warranty, a copy of which is printed on the back of this manual.

It is the responsibility of the installing contractor to see that all controls are correctly installed

and are operating properly when the installation is complete.

Table of Contents

I. Pre-Installation............................... 6

VI. Electrical....................................... 53

VII. Modular Installation .................... 62

VIII. System Start-up ............................ 64

IX. Service .......................................... 68

X. Repair Parts.................................. 74

II. Unpack Boiler ................................ 7

III. Venting/Air Intake Piping .............. 8

IV. Water Piping and Trim ................. 45

V. Gas Piping.................................... 50

Figure 1: Minimum Clearances to Combustibles

I. Pre-Installation

WARNING

F. Provide combustion and ventilation air in accordance

with applicable provisions of local building codes,

or: USA - National Fuel Gas Code, NFPA 54/ANSI

Z223.1, Air for Combustion and Ventilation;

Canada - Natural Gas Installation Code, CAN/

CGA-B149.1, or Propane Installation Code, CAN/

CGA-B149.2, Venting Systems and Air Supply for

Appliances.

If you do not follow these instructions

exactly, a fire or explosion may result

causing property damage or personal

injury.

DANGER

WARNING

Do not install boiler where gasoline or other

flammable vapors or liquids, or sources of

hydrocarbons (i.e. bleaches, cleaners,

chemicals, sprays, paint removers, fabric

softeners, etc.) are used or stored.

Adequate combustion and ventilation air

must be provided to assure proper

combustion.

The following guideline is based on the National Fuel Gas

Code, NFPA 54/ANSI Z223.1.

NOTICE

1. Determine volume of space (boiler room). Rooms

communicating directly with space (through

openings not furnished with doors) are considered

part of space.

Due to the low water content of the boiler,

mis-sizing of the boiler with regard to the

heating system load will result in excessive

boiler cycling and accelerated component

failure. Burnham DOES NOT warrant

failures caused by mis-sized boiler

applications. DO NOT oversize the boiler to

the system. Modular boiler installations

greatly reduce the likelihood of boiler

oversizing.

Volume [ft³] = Length [ft] x Width [ft] x Height [ft]

2. Determine Total Input of all appliances in space.

Round result to nearest 1,000 Btu per hour (Btuh).

3. Determine type of space. Divide Volume by Total

Input.

a. If result is greater than or equal to 50 ft³ per

1,000 Btuh, space is considered an unconﬁned

space.

A. Installation must conform to the requirements of the

authority having jurisdiction. In the absence of such

requirements, installation must conform to the National

Fuel Gas Code, NFPA 54/ANSI Z223.1, and/or CAN/

CGA B149 Installation Codes.

b. If result is less than 50 ft³ per 1,000 Btuh, space

is considered a conﬁned space.

4. Determine building type. A building of unusually

tight construction has the following characteristics:

a. Walls and ceiling exposed to outside atmosphere

have a continuous water vapor retarder with a

rating of 1 perm or less with openings gasketed

and sealed, and;

B. Appliance is design certiﬁed for installation on

combustible ﬂooring. Do not install boiler on

carpeting.

b. Weather-stripping has been added on openable

windows and doors, and;

C. Provide clearance between boiler jacket and

combustible material in accordance with local ﬁre

ordinance. Refer to Figure 1 for minimum listed

clearance from combustible material. Recommended

service clearance is 24 inches from left side, right

side and front. Service clearances may be reduced to

minimum clearances to combustible materials.

c. Caulking or sealants applied in joints around

window and door frames, between sill plates and

ﬂoors, between wall-ceiling joints, between wall

panels, at plumbing and electrical penetrations,

and at other openings.

5. For boiler located in an unconﬁned space in a

building of other than unusually tight construction,

adequate combustion and ventilation air is normally

provided by fresh air inﬁltration through cracks

around windows and doors.

D. Install on level ﬂoor. For basement installation provide

solid base such as concrete, if ﬂoor is not level or if

water may be encountered on ﬂoor around boiler. Floor

must be able to support weight of boiler, water and all

additional system components.

E. Protect gas ignition system components from water

(dripping, spraying, rain, etc.) during boiler operation

and service (circulator replacement, condensate trap,

control replacement, etc.).

c. Horizontal ducts. Minimum free area of one (1)

square inch per 2,000 Btu per hour input of all

equipment in space. Duct cross-sectional area

shall be same as opening free area.

NOTICE

Boilers operated with direct vent (sealed

combustion) are exempt from needing

provisions for combustion air from the

room, provided air intake piping is installed

per code and the instructions in this

manual.

Alternate method for boiler located within

conﬁned space. Use indoor air if two permanent

openings communicate directly with additional

space(s) of sufﬁcient volume such that combined

volume of all spaces meet criteria for unconﬁned

space. Size each opening for minimum free area

of one (1) square inch per 1,000 Btu per hour

input of all equipment in spaces, but not less than

100 square inches.

6. For boiler located within unconﬁned space in building

of unusually tight construction or within conﬁned

space, provide outdoor air through two permanent

openings which communicate directly or by duct

with the outdoors or spaces (crawl or attic) freely

communicating with the outdoors. Locate one opening

within twelve (12) inches of top of space. Locate

remaining opening within twelve (12) inches of bottom

of space. Minimum dimension of air opening is three

(3) inches. Size each opening per following:

7. Combustion Air/Ventilation Duct Louvers and

Grilles. Equip outside openings with louvers to

prevent entrance of rain and snow, and screens to

prevent entrance of insects and rodents. Louvers and

grilles must be ﬁxed in open position or interlocked

with equipment to open automatically before burner

operation. Screens must not be smaller than ¼ inch

mesh.

a. Direct communication with outdoors. Minimum

free area of one (1) square inch per 4,000 Btu per

hour input of all equipment in space.

Consider the blocking effect of louvers, grilles and

screens when calculating the opening size to provide

the required free area. If free area of louver or grille

is not known, assume wood louvers have 20-25

percent free area and metal louvers and grilles have

60-75 percent free area.

b. Vertical ducts. Minimum free area of one (1)

square inch per 4,000 Btu per hour input of all

equipment in space. Duct cross-sectional area

shall be same as opening free area.

CAUTION

If using indoor air for combustion (see Venting Section - Indoor Air), avoid operating this boiler in an

environment where saw dust, loose insulation fibers, dry wall dust, etc. are present. If boiler is

operated under these conditions, the burner interior and ports must be cleaned and inspected daily

to insure proper operation.

II. Unpack Boiler

WARNING

CAUTION

Installation of this boiler should be

undertaken only by trained and skilled

personnel from a qualified service agency.

Do not drop boiler. Do not bump boiler

jacket against floor.

A. Move boiler to approximate installed position.

E. Tilt the boiler to its front side or back side and slide a

wooden slat under the three raised feet.

B. Remove all crate fasteners.

F. Tilt the boiler in the opposite direction and slide

C. Lift and remove outside container. Save two of the

wooden slats from the container sleeve for use in Steps

E and F.

another wooden slat under the three raised feet.

G. Slide the boiler left or right off the skid using the two

wooden slats as runners.

D. Remove all boiler hold-down fasteners.

H. Move boiler to its permanent location.

III. Venting / Air Intake Piping

WARNING

Do not use this boiler with galvanized, Type 304 or Type 316 stainless steel, non metallic or

any other non AL29-4C^®based vent systems.

Do not use a barometric damper or drafthood with this appliance.

Do not use vent dampers with this boiler.

Moisture and ice may form on surfaces around termination. To prevent deterioration,

surfaces should be in good repair (sealed, painted, etc.).

This appliance needs fresh air for safe operation and must be installed so there are

provisions for adequate combustion and ventilation air.

Do not reduce size of air intake pipe.

Read, understand and follow combustion air instruction restrictions contained in the Pre-

Installation instructions of this manual.

Do not operate appliance where gasoline or other flammable vapors or liquids, or sources of

hydrocarbons (i.e. bleaches, cleaners, chemicals, sprays, paint removers, fabric softeners,

etc.) are used, stored and/or present in the air.

When installing vent pipe through chimney, no other appliance can be vented into the

chimney.

Do not exceed maximum vent/air intake lengths. Refer to Table 4.

Table 1: Air Intake / Vent System Options

Installation

Additional

Part

Number

Drawing and

Specification

(See Section)

Option

Description

Vent Kit

Required

Direct Vent (sealed combustion) with both the vent

pipe and air intake pipe terminating horizontally

(through a sidewall) with individual penetrations for

the vent and air intake piping and terminals.

1. Separate

Horizontal

See

Table 2

Direct Vent (sealed combustion) with both the vent

pipe and air intake pipe terminating vertically

(through the roof) with individual penetrations for

the vent and air intake piping and terminals.

2. Separate

Vertical

See

Table 2

Direct Vent (sealed combustion) with the vent pipe

3. Combination and air intake pipe joining at a common terminal

3 - 6 Section

(61106012)

Yes

Horizontal

and terminating horizontally (through a sidewall up

to 15" thick) with only one penetration.

Direct Vent (sealed combustion) with the vent pipe

4. Combination and air intake pipe joining at a common terminal

3 - 4 Section

(100222-01)

5 - 6 Section

(100223-01)

Yes

Vertical

and terminating vertically (through the roof) with

only one penetration.

Power Vent - Air used for combustion is provided

from within the building.

5. Indoor Air

See Table 2

Direct Vent (sealed combustion) with both the vent

pipe and air intake pipe terminating horizontally

(through a sidewall) with individual penetrations for

the vent and air intake piping and terminals.

6. Optional

Separate

See Table 2

Horizontal

Table 2: Vent System Components Included with Boiler

Vent System Components

Part Number

8110701

Gasketed Vent Terminal 3"

Horizontal (SCG-3 thru SCG-7)

Gasketed Vent Terminal 4"

Horizontal (SCG-8 & SCG 9)

8110702

6116045

6116049

6116063

Disc Air Intake - 3"

(SCG-3 & SCG-4)

Disc Air Intake - 4"

(SCG-5 & SCG-6)

Air Intake - 5"

(SCG-7 thru SCG-9)

Table 3: Burnham Vent System and Air Intake System Components

Vent System

Component

Part

Number

Equivalent

Feet of Pipe

3" Dia. Pipe x 1 Ft

8116296U

100176-01

8116298U

100177-01

8116300U

100178-01

8116319U

4" Dia. Pipe x 1 Ft

3" Dia. Pipe x 3 Ft

4" Dia. Pipe x 3 Ft

3" Dia. Pipe x 5 Ft

4" Dia. Pipe x 5 Ft

3" Dia. Pipe x Adjustable

Intake System

Components

(Parts by Others)

Equivalent

Feet of Pipe *

3", 4", or 5" ID Pipe x 1 Ft

3", 4", or 5" ID Pipe x 2 Ft

3", 4", or 5" ID Pipe x 4 Ft

3", 4", or 5" ID Pipe x 5 Ft

3", or 4" 90° Elbow

**Equal to

Installed Length

(1.06 to 1.64)

4" Dia. Pipe x Adjustable

3" Dia. 90° Elbow

100179-01

8116294U

100180-01

8116292U

100181-01

8166302U

100182-01

8116304U

100183-01

8116116

4" Dia. 90° Elbow

3", or 4" 45° Elbow

3" Dia. 45° Elbow

4" Dia. 45° Elbow

5" 90° Elbow

3" Dia. Horizontal Drain Tee

4" Dia. Horizontal Drain Tee

3" Dia. Vertical Drain Tee

4" Dia. Vertical Drain Tee

3" Single Wall Thimble

4" Single Wall Thimble

3" Double Wall Thimble

4" Double Wall Thimble

5" 45° Elbow

7½

---

* Equivalent Feet of Pipe Based on

Standard 4" Smoke Pipe Design

100184-01

8116115

100185-01

Table 4: Vent/Air Intake Length

3" Air Intake Pipe 4" Air IntakePipe 5" Air IntakePipe

(Equiv. Ft.) (Equiv. Ft.) (Equiv. Ft.)

3" Vent Pipe

(Equiv. Ft.)

4" Vent Pipe

(Equiv. Ft.)

Model

Min. Max. Min. Max. Min. Max.

50 ---- ---- ---- ----

Min.

Max.

Min.

----

Max.

----

SCG-3 & SCG-4

SCG-5 & SCG-6

SCG-7

----

SCG-8 & SCG-9

----

A. Vent Guidelines Due to Removal of an Existing

Boiler

B. General Guidelines

1. Vent system installation must be in accordance

with National Fuel Gas Code, NFPA 54/ANSI

Z221.3 or applicable provisions of local building

codes. Contact local building or ﬁre ofﬁcials about

restrictions and installation inspection in your area.

For installations not involving the replacement of an

existing boiler, proceed to Step B.

When an existing boiler is removed from a common

venting system, the common venting system is likely

to be too large for proper venting of the remaining

appliances. At the time of removal of an existing

boiler, the following steps shall be followed with each

appliance remaining connected to the common venting

system placed in operation, while the other appliances

remaining connected to the common venting system are

not in operation:

2. The SCG is designed to be installed as either

a Direct Vent boiler or Power Vent boiler. In

the Direct Vent conﬁguration all of the air for

combustion is supplied directly to the burner

enclosure from outdoors and ﬂue gases are vented

directly outdoors (through wall or roof). In the

Power Vent conﬁguration, room air provides air

for combustion and ventilation. Flue gases are still

vented directly outdoors (through wall or roof).

Note: Venting requirements change if indoor air is

used.

1. Seal any unused openings in the common venting

system.

2. Visually inspect the venting system for proper

size and horizontal pitch and determine there is no

blockage or restriction, leakage, corrosion, and other

deﬁciencies which could cause an unsafe condition.

3. Refer to the appropriate drawings in this section of

this manual to determine the proper conﬁguration of

venting system. See Table 1.

3. Insofar as is practical, close all building doors and

windows and all doors between the space in which

the appliances remaining connected to the common

venting system are located and other spaces of the

building. Turn on clothes dryers and any appliance

not connected to the common venting system.

Turn on any exhaust fans, such as range-hoods and

bathroom exhausts, so they will operate at maximum

speed. Do not operate a summer exhaust fan. Close

ﬁreplace dampers.

4. This appliance requires a Special Gas Vent. The

product is designed to use Burnham supplied

AL 29-4C^®Stainless Steel vent system components.

The following manufacturers offer similar

AL 29-4C^®components and are approved for use

with this product. Heat-Fab Inc. - Saf-T-Vent, Flex-L

International Inc. - Star-34, Z-Flex U. S., Inc. -

Z-Vent, and Protech Systems , Inc.- FasNSeal™ or

equivalent. The use of these alternate manufacturer’s

venting systems will require adapters to connect

to the Burnham supplied vent connector and vent

terminal. These adapters are not supplied with this

unit and should be obtained from the supplier of

the alternate manufacturer’s venting system. See

Table 3 for complete list of Burnham Vent System

Components.

4. Place in operation the appliance being inspected.

Follow the Lighting (or Operating) Instructions.

Adjust thermostat so appliance will operate

continuously.

5. Test for spillage at the draft hood relief opening

after ﬁve (5) minutes of main burner operation. Use

the ﬂame of a match or candle, or smoke from a

cigarette, cigar or pipe.

5. Horizontal vent pipe must maintain a minimum ¼

inch per foot slope down towards boiler.

6. After it has been determined that each appliance

remaining connected to the common venting system

properly vents when tested as outlined above, return

doors, windows, exhaust fans, ﬁreplace dampers and

any other gas burning appliance to their previous

conditions of use.

6. Use noncombustible ¾ inch pipe strap to support

horizontal runs and maintain vent location and

slope while preventing sags in pipe. Do not restrict

thermal expansion or movement of vent system.

Maximum support spacing is ﬁve (5) feet. Do not

penetrate any part of the vent system with fasteners.

7. Any improper operation of the common venting

system should be corrected so the installation

conforms with the National Fuel Gas Code, NFPA

54/ANSI Z223.1. When resizing any portion of the

common venting system, the common venting

system should be resized to approach the minimum

size as determined using the appropriate tables in

Part II in the National Fuel Gas Code, NFPA 54/

ANSI Z223.1.

7. Vent length restrictions are based on equivalent

length of vent/air pipe (total length of straight

pipe plus equivalent length of ﬁttings). Maximum

vent/air lengths are listed in Table 4. Do not exceed

maximum vent/air intake lengths. Table 3 lists

equivalent lengths for ﬁttings. Do not include vent/

air terminals in equivalent feet calculations.

8. Provide and maintain vent pipe minimum clearances

to combustible materials. Vent pipe minimum

clearance to combustible material is four (4) inches

when vent is installed in a fully enclosed (chase)

application or three (3) inches when vent is installed

11. Plan venting system to avoid possible contact with

plumbing or electrical wires. Start at vent connector

on top of boiler and work towards vent terminal.

with at least one side open, similar to a joist bay

application. Use double wall thimble [Burnham

Part No. 8116115 (3”), 100185-01 (4”)] when

penetrating a combustible wall.

12. Once a vent pipe manufacturer and system is chosen

never mix and match vent systems.

9. Do not install venting system components on

the exterior of the building except as speciﬁcally

required by these instructions. The vent termination

location is restricted as follows:

13. If a non-standard length pipe is required:

Gasketed Vent System: The use of the adjustable

length pipe (P/N 8116319U) is recommended to

complete a non-standard pipe length. This pipe

requires a minimum installed length of 12¾ inch

and can adjust across a 7 inch gap up to a maximum

of 19¾ inch long. (Note for the adjustable pipe

the installed length should be measured from the

centerline of the bead on the male end of the ﬁrst

pipe to the end of the female pipe excluding the

locking band of the second pipe with a single

gasket.) Only in the event the adjustable length pipe

is not sufﬁcient a standard length pipe may be cut

using the procedure outlined below for the Gasket-

Less Vent System.

a. Minimum twelve (12) inches above grade plus

normally expected snow accumulation level, or

seven (7) feet above grade if located adjacent

to public walkway. Do not install over public

walkway where local experience indicates

appliance ﬂue gas vapor or condensate creates a

nuisance or hazard.

b. Minimum three (3) feet above any forced air

inlet located within ten (10) feet.

c. Direct Vent - Minimum one (1) foot below, one

(1) foot horizontally from, or one (1) foot above

any door, window, or gravity air inlet.

Power Vent - Minimum four (4) feet below, four

(4) feet horizontally from, or four (4) feet above

any door, window, or gravity air inlet.

WARNING

Never exceed maximum installed length of

19¾ inches for adjustable length pipe.

Risk of flue gas leakage is possible.

d. Minimum four (4) feet horizontally from electric

meters, gas meters, regulators, and relief valves.

This distance may be reduced if equipment is

protected from damage due to condensation or

vapor by enclosure, overhangs, etc.

NOTICE

e. Minimum twelve (12) inches from overhang or

corner of building.

Cut must be square with pipe and filed or

sanded smooth before joining. Carefully

ensure roundness of cut pipe by hand with

gloves before installing. Seal joint with RTV

specified in this manual.

10. Enclose vent passing through occupied or

unoccupied spaces above the boiler with material

having a ﬁre resistance rating of at least equal to the

rating of the adjoining ﬂoor or ceiling. Maintain

minimum clearances to combustible materials. See

Figure 1.

C. Install Vent Pipe, Burnham Gasketed Vent System.

1. Procedure for Joining Burnham Gasketed Vent Pipe

and Fittings. See Figure 3.

Note: For one or two family dwellings, ﬁre

resistance rating requirement may not need to be

met, but is recommended.

Figure 3: Burnham Gasketed Vent Joint Detail

a. Wipe the male end of each joint using an alcohol

pad to remove any dirt and grease.

8. Locate air intake termination on the same wall as

the vent termination if possible, to prevent nuisance

boiler shutdowns. However, boiler may be installed

with vertical venting and sidewall combustion air

inlet or visa versa, if installation conditions do not

allow alternate arrangement.

b. Align weld seams in pipes and use a slight

twisting motion to FULLY insert male end into

female end of joint. Ensure bead in male end

of pipe is below locking band and rest against

the end of the female pipe. Verify the factory-

installed gasket is not dislodged or cut.

9. Do not exceed air intake length. See Table 4.

10. Use single wall metal or PVC pipe.

c. Tighten locking band by HAND with a 5/16”

nut driver until snug plus ¼ turn. DO NOT

SECURE JOINTS WITH SHEET METAL

SCREWS OR POP RIVETS. DO NOT

PUNCTURE THE VENT SYSTEM!

a. Air intake pipe diameter is based on boiler size.

SCG-3 & SCG-4 uses 3 inch diameter piping.

SCG-5 & SCG-6 uses 4 inch diameter piping.

SCG-7 thru SCG-9 uses 5 inch diameter piping.

d. Once the installation is complete, operate

appliance and inspect all joints to ensure that ﬂue

gases and/or liquid condensate will not escape.

11. Air intake termination must be located:

Horizontal - At least twelve (12) inches above

grade plus the expected snow accumulation.

D. Separate Horizontal Venting System. See Figures 4,

12. Start at collar on burner enclosure (inside boiler

jacket) and work towards the air intake terminal.

5A and 5B.

Vent Piping –

13. Maintain minimum of ¼ inch per foot slope on

horizontal runs. Slope towards air inlet terminal

when possible. If not, slope towards boiler.

1. This boiler is supplied with components as standard

equipment for installation of the separate horizontal

venting system.

14. The air intake pipe must be adequately supported

with straps or supports no less than ﬁve (5) feet

apart on horizontal runs. The complete air intake

piping system must be rigid and able to withstand

minor impacts without collapse.

2. Do not exceed maximum vent/air intake lengths.

Refer to Table 4.

3. Recommended horizontal installation consists of

vent being sloped down ¼ inch per foot away from

boiler. See Figure 4.

15. Inlet air pipe penetration:

4. Use appropriate designed thimbles when passing

through combustible walls (thimble use optional for

noncombustible walls). Insert thimble through wall

from outside. Secure outside ﬂange to wall with

nails or screws, and seal ID, OD and vent holes with

sealant material. Install inside ﬂange to inside wall,

secure with nails or screws, and seal with sealant

material.

Horizontal - Size wall penetration to allow easy

insertion of air inlet piping. Seal around pipe with

sealant to form weathertight exterior joint.

16. Seal all joints airtight, using silicone caulk or self-

adhesive aluminum tape.

17. Install Air Intake Terminal:

Horizontal - Remove four (4) screws from cover

plate and remove cover plate from terminal. Insert

intake piping into intake terminal collar. Secure

terminal to intake piping and seal joint with silicone

caulk or self-adhesive aluminum tape. Apply

continuous bead of silicone caulk around the back

of the intake terminal, approximately ¼ inch from

its edge. Push inlet terminal inward until terminal’s

back ﬂange is against the wall surface. Secure the

terminal with noncorrosive fasteners (stainless steel,

brass or aluminum) to the wall. Reinstall the cover

plate with four (4) screws. Apply a bead of silicone

caulk to perimeter of intake terminal’s back ﬂange

to provide a weathertight seal.

5. For noncombustible wall application when thimble

is not used, size opening such that bell with locking

band attached cannot pass through.

6. Join vent terminal to vent pipe. See Figures 5A and

5B.

7. Insert vent pipe through thimble/opening from

outside and join to vent system. Apply sealant

between vent pipe and opening/thimble to provide

weathertight seal.

Air Intake piping - See Figures 4, 5A and 5B.

E. Separate Vertical Venting System - See Figures 6, 7, 8A, 8B and 9.

NOTICE

Roof penetrations require the use of roof

flashing and storm collar - not supplied with

boiler.

Vertical Venting –

8. Locate air intake termination on the same roof

location as the vent termination if possible, to

prevent nuisance boiler shutdowns. However, boiler

may be installed with vertical venting and sidewall

combustion air inlet or visa versa, if installation

conditions do not allow alternate arrangement.

1. Do not exceed maximum vent lengths. Refer to

Table 4.

2. Installation of a vertical vent tee 8116304U is

required on all vertical vent applications. See

Figures 6 and 7. Attach vertical vent drain tee

directly to elbow or horizontal pipe from an elbow

immediately after vent connector.

9. Use single wall metal pipe or PVC and ﬁttings

available at most heating distributors.

a. Air intake pipe diameter is based on boiler size.

3. Slope horizontal runs minimum ¼ inch per foot.

Slope towards vertical vent drain tee. Position weld

seams in vent pipes, in all horizontal runs, at the top

to avoid condensate from lying on the seams.

SCG-3 & SCG-4 uses 3 inch diameter piping.

SCG-5 & SCG-6 uses 4 inch diameter piping.

SCG-7 thru SCG-9 uses 5 inch diameter piping.

4. Install ﬁre stops where vent passes through ﬂoors,

ceilings or framed walls. The ﬁre stop must close

the opening between the vent pipe and the structure.

10. Air intake termination must be located:

Vertical - At least twelve (12) inches above the roof

surface plus the expected snow accumulation.

5. Whenever possible, install vent straight through

the roof. Refer to Figure 7 if offset is necessary.

Maintain minimum clearance to combustible

materials.

11. Start at collar on burner enclosure (inside boiler

jacket) and work towards the air intake terminal.

12. Maintain minimum of ¼ inch per foot slope on

horizontal runs. Slope down towards boiler.

6. Install Vent Terminal.

13. The air intake pipe must be adequately supported

with straps or supports no less than ﬁve (5) feet

apart on horizontal runs. The complete air intake

piping system must be rigid and able to withstand

minor impacts without collapse.

a. Size roof opening to maintain minimum

clearance from combustible materials.

b. Extend vent pipe to maintain minimum vertical

and horizontal distance of twelve (12) inches

from roof surface. Allow additional vertical

distance for expected snow accumulation.

Provide brace as required. Refer to Figures 8A

and 8B.

14. Inlet air pipe penetration:

Vertical - Size roof opening to allow easy insertion

of inlet piping and allow proper installation of

ﬂashing and storm collar.

NOTICE

a. Use appropriately designed vent ﬂashing

when passing through roofs. Follow ﬂashing

manufacturers’ instructions for installation

procedures. Flashing manufacturers are Air-

Jet, American Metal Products, Metal Fab, and

Simpson Dura-Vent.

Vertical venting requires the use of roof

flashing and a storm collar to prevent

moisture from entering the structure.

c. Install storm collar on vent pipe immediately

above ﬂashing. Apply Dow Corning Silastic 732

RTV Sealant between vent pipe and storm collar

to provide weathertight seal.

b. Extend air intake pipe to maintain minimum

vertical and horizontal distance of twelve

(12) inches from roof surface. Allow

additional vertical distance for expected snow

accumulation. Provide brace as required. Refer

to Figures 8A and 8B.

d. Attach vent terminal.

Vertical Air Intake Piping –

7. Do not exceed maximum air intake length. Refer to

Table 4.

c. Vertical air intake requires ﬂashing and a storm

collar to prevent moisture from entering the

structure.

d. Install storm collar on air intake pipe

immediately above ﬂashing. Apply Dow

Corning Silastic 732 RTV Sealant between

air intake pipe and storm collar to provide

weathertight seal.

15. Seal all joints airtight, using silicone caulk or self-

adhesive aluminum tape.

16. Install Air Intake Terminal:

Vertical - Insert intake piping into intake terminal

collar. Secure terminal to intake piping and seal

joint with silicone caulk.

e. All exposed air intake piping must be

constructed of corrosion resistant material such

as aluminum, stainless steel or PVC.

Figure 9: Vertical Air Intake Piping

F. Combination Horizontal Venting System –SCG-3 Through SCG-6 ONLY – See Figures 10 and 11.

1. Do not exceed maximum vent/air intake lengths.

Refer to Table 4.

NOTICE

This vent system requires components not

supplied with the boiler.

2. Install Combination Vent/Air Terminal. See Figure 11.

a. After determining the location with reference to Section B - General Venting Guidelines, cut a 6-1/8 inch square

opening in the wall for the air box sub-assembly which is 6 inch square.

b. Remove and save shipping screw from end panel with collar and vent pipe assembly. This will be reinstalled in a later

step.

Vent Carton Part Number 61106012 (includes items below)

Description

Component Part Number

61106011

Air Box Sub-Assembly (6" square x 2' long)

Exterior Wall Cover (10" square)

71106016

4" x 3" Vent Pipe Reducer

8116239

Plate-Seal Exterior Cover (2)

71106017

#8 x ½" Stainless Steel Sheet Metal Screw (19)

#10 - 32 x ¼" Stainless Steel Machine Screw (8)

#10 - 32 x ½" Aluminum Spacer (4)

80860047

80860842

80861617

COMBINATION HORIZONTAL VENT SYSTEM COMPONENTS

c. From exterior of building, insert air box sub-

assembly into square opening. Push air box

inward until wall ﬂange is against wall, check

for level and mark the location of the four (4)

securing holes on the exterior wall. Remove air

box from wall.

3. Install Vent Piping. See Figure 10 and 11.

a. Start at vent connector on boiler and work

towards combination vent/air terminal.

b. Installation of a vertical vent tee 8116304U is

required on all vertical vent applications. See

Figures 12 and 13. Attach vertical vent drain

tee directly to elbow or horizontal pipe from an

elbow immediately after vent connector.

d. Drill four (4) pilot holes, properly sized for the

non-corrosive fasteners (stainless steel, brass, or

aluminum) to be used to secure the wall ﬂange to

the exterior wall. (Securing screws not supplied

with kit.)

c. Slope horizontal runs minimum ¼ inch per foot.

Slope towards vertical vent drain tee. Position

weld seams in vent pipes, in all horizontal runs,

at the top to avoid condensate from lying on the

seams.

e. Attach four (4) 1/2 inch long threaded aluminum

spacers to the outer ﬂanges of the exterior

wall ﬂange with four (4) number 10 - 32 x 1/4

inch stainless steel machine screws provided.

(See Figure 11.)

d. Use 3/4 inch pipe strap to support horizontal runs

and maintain vent location and slope. Maximum

support spacing is ﬁve (5) feet.

f. Apply a 1/4 inch thick continuous bead of

silicone caulk to perimeter of exterior wall

ﬂange’s back surface to provide a weathertight

seal.

e. Install vent piping to connect vent connector

on boiler and combination vent/air terminal.

Reference Section B - General Venting

Guidelines for proper procedure for joining pipe

and ﬁttings.

g. Reinstall air box sub-assembly into opening in

exterior wall and secure to wall.

f. Connect vent piping to combination vent/air

terminal. See Figure 10.

WARNING

4. Install Air Intake Piping. See Figures 10 and 11.

a. Do not exceed air intake length. See Table 4.

Non-corrosive fasteners must be used.

b. Use single wall metal pipe or PVC and ﬁttings

h. Apply a bead of silicone caulk to perimeter of

wall ﬂange, where the wall and ﬂange join. Use

a tool or your ﬁnger and apply pressure while

smoothing caulking to provide a weathertight

seal.

available at most heating distributors.

c. Air intake pipe diameter is based on boiler size.

SCG-3 & SCG-4 uses 3 inch diameter piping.

SCG-5 & SCG-6 uses 4 inch diameter piping.

SCG-7 thru SCG-9 uses 5 inch diameter piping.

i. From interior of building, insert end panel with

collar and vent pipe assembly into open end of

air box sub-assembly. (See Figure 11.)

d. Start at collar on burner enclosure (inside boiler

jacket) and work towards the combination vent/

air terminal.

j. Secure end panel to air box sub-assembly with

shipping screw and thirteen (13) number 8 sheet

metal screws provided.

e. Maintain minimum of 1/4 inch per foot slope on

horizontal runs. Slope down towards boiler.

k. From exterior of building, position 10 inch

square exterior wall cover over exterior wall

ﬂange. Insert 3 inch diameter vent pipe into

center opening in terminal cover. Align four

(4) holes on cover with 1/2 inch long threaded

spacers on wall ﬂange. Secure terminal cover

with four (4) number 10 - 32 x 1/4 inch stainless

steel machine screws provided.

f. The air intake pipe must be adequately supported

with straps or supports no less than ﬁve (5)

feet apart on horizontal runs. The complete air

intake piping system must be rigid and able to

withstand minor impacts without collapse.

g. Connect Air Intake Piping to Combination Vent/

Air Terminal. See Figure 10.

l. Apply a bead of silicone caulk to perimeter of

plate-seal and around pipe. Secure plate-seal to

exterior cover with six (6) #8 stainless steel sheet

metal screws provided. Smooth caulk around

plate-seal and pipe to provide weathertight seal.

NOTE: When installing 3 inch diameter air intake

piping for a SCG-3 or SCG-4 application, the use of

a 4 inch x 3 inch reducer will be required to connect

air intake piping to combination vent/air terminal.

(Reducer included with combination horizontal

venting kit).

m. Install Vent Terminal supplied with boiler to vent

pipe penetrating through terminal cover. Join

terminal and pipe with locking band and seal

with RTV (see Figure 3).

h. Seal all joints airtight, using silicone caulk or

self-adhesive aluminum tape.

G. Combination Vertical Venting System – SCG-3 Through SCG-6 ONLY – See Figures 12, 13 and 14.

NOTICE

This vent system requires components not

supplied with the boiler.

Part Number

SCG-5 & SCG-6

Description

SCG-3 & SCG-4

100222-01

Vent Carton Part Number

Starter Tee

100223-01

100225-01

100224-01

Vent/Air Adaptor

100226-01

COMBINATION VERTICAL VENT SYSTEM COMPONENTS

1. Saf-T Vent SC is an advanced concentric vent

system designed for zero clearance installation

in residential applications. The inner wall is

constructed from superferritic AL29-4C^®stainless

steel. The outer wall is also constructed from

stainless steel, providing durability and a lasting

ﬁnish.

the system in place. A continuous straight-line

pitch of at least ¼” (2°) to the foot on horizontal

runs must be maintained in order to properly rid

the system of the corrosive condensate.

5. General Installation Requirements:

•

Saf-T Vent SC vent sections, or other Saf-T

Vent products, must be used throughout the

entire length of the system. Alternatives such

as galvanized pipe, PVC, nonmetallic pipe,

prefabricated chimney, ﬁeld-fabricated vents

or Type B vent sections must not be used. Do

not mix pipes, ﬁttings, or joining methods from

different manufacturers.

2. As a Special Gas Vent system: Saf-T Vent is

approved for use on ANSI Category I, II, III, and

IV Gas-Burning Appliances and certain Direct Vent

Appliances. Saf-T Vent SC is appropriate for use on

appliances that specify an AL29-4C venting system.

3. As a Sealed Combustion system: The unique

concentric design of Saf-T Vent SC also allows it

to function as a pipe-in-a-pipe vent. Products of

combustion are exhausted out through the inner wall

while combustion air is drawn in through the outer

wall. An appliance can be direct-vented with only

a single penetration through the building structure.

This application must be approved by the

Appliance Manufacturer.

•

More than one appliance may not be

interconnected to any part of the venting system.

Any penetrations of ceilings, ﬂoors or walls must

be properly ﬁre-stopped.

Whenever gas-burning equipment is installed in

the same space where halogenated substances

may exist (refrigerants, solvents, bleaches,

salts, etc.), clean outside air must be utilized for

combustion.

Note: Saf-T Vent SC includes an integral seal and

does not require RTV sealant. However, sealant

may be necessary when connecting Saf-T Vent SC

components directly to certain appliance ﬂue collars

and to the gasket-less Saf-T Vent GC and Saf-T Vent

CI vent systems.

•

The vent system shall not be routed into,

through or within any other actively used vent or

chimney.

Seal weather exposed joints of the outer jacket

with foil tape or an exterior grade silicone

sealant.

For applications up to 550°F/288°C, approved

sealants include GE RTV 106 and Dow Corning

736.

Combustible Material is any material made of

or surfaced with wood, compressed paper, plant

ﬁbers, or other materials that are capable of

being ignited or burned. Such material shall be

considered combustible even though it is ﬂame-

proofed, ﬁre-retardant, or plastered. (Source:

NPFPA54/ANSI Z223.1-1999.)

For applications up to 300°F/149°C, approved

sealants include GE RTV 106 and Dow Corning

732.

4. Pre-Installation Considerations:

•

Proper planning prior to installation is essential

as to avoid possible contact with concealed

plumbing or electrical wiring inside walls,

ﬂoors or ceilings as well as maintaining proper

clearances. Be sure to plan a sufﬁcient number

of supports for the entire system that will

•

Non-Combustible Material is any material that

is not capable of being ignited and burned, such

material consisting entirely of, or a combination

of, steel, iron, brick, tile, concrete, slate,

asbestos, glass and plaster. (Source: NPFPA54/

ANSI Z223.1-1999.)

maintain the required straight-line pitch and hold

Clearances to Combustibles:

Clearance to

Maximum Flue

Diameter Combustible

Gas Temp. (°F)

Orientation

Enclosure

Material

Vertical,

No Offsets

550

Fully enclosed by combustible

material on all sides

330

Horizontal,

Vertical with

Offsets

400

3" - 4"

Unenclosed, at least 1 side open,

combustible material on a

maximum of 3 sides

550

Any

Noncombustible material

6. Vertical Installation Requirements:

•

For a venting system that extends through

any zone above that on which the connected

appliance is located (except for one and two

family dwellings), the vent system shall be

enclosed with an enclosure having a ﬁre

resistance rating equal to or greater than that of

the ﬂoor or roof assemblies through which it

passes.

a. Seal weather exposed joints of the outer jacket

with foil tape or an exterior grade silicone

sealant.

b. The vent system must terminate at least 3 feet

above the roof line and at least 2 feet higher than

any portion of the building within 10 feet.

c. When terminated at a height of more than 6 feet

the stack must be supported by a support bracing.

The vent should be supported every 10 feet.

•

Design any enclosure to permit inspection of the

system.

Do not place any type of insulation in any

required clearance spaces surrounding the vent

system.

d. The total continuous distance of the vent system

from the appliance ﬂue collar to the termination

shall not exceed that speciﬁed in the appliance

manufacturer’s installation instructions.

e. In cold climates do not install a condensate drain

on the exterior of the building. Doing so may

result in dangerous icy conditions on surfaces

near the drain and may cause damage to the vent

system and/or the building exterior.

f. Install supports every 10 feet vertically along the

vent pipe route. Vertical supports are required

after every transition to vertical and are required

after every offset elbow. When the vent is free

standing and penetrates a roof/ceiling another

means of support must be used at a second

location. Refer to the Vertical Supports section

in this manual.

7. Joint Assembly Instructions:

a. Before joining the sections or ﬁttings together, use an alcohol pad to wipe the joint area of both ends of the inner

pipe. This will remove any foreign matter which may affect the integrity of the seal. Install the system with the

female ends (ends with the red seal) pointing away from the appliance. (Unless speciﬁed differently by the appliance

manufacturer.)

b. Insert the male end of the inner pipe into the female end of the previous section. In extremely dry conditions it may be

helpful to moisten the seal with clean water prior to assembly. Push ﬁrmly until the outer jacket has made contact with

the snap ring located inside the female end of the previous section. When fully assembled the outer female end will

overlap the male end 1”.

c. Use the three (3) self-tapping screws provided to connect the outer vents. No pre-drilling is required.

CAUTION

Do not overtighten. If using a variable torque drill, use a low torque setting to install screws, as

not to strip out the holes. If a hole becomes stripped due to overtightening, a larger diameter

screw (½" long max.) or short pot rivet can be used.

8. Straight Sections Cut To Length:

e. Add 3” to the distance measured previously for the

cut length of the inner vent pipe. Mark a cut line on

the inner vent on the male end (the end without the

red seal).

If a custom length of SC is necessary, a standard vent

section can be cut.

a. Measure the distance of the length needed, taking the

measurement from the end of one of the outer jackets

to the beginning of the other outer jacket on the

section to connect to, (A to B on diagram).

The inner pipe is always cut 1” longer than the

outer pipe.

f. WEAR GLOVES, as cut ends are very sharp. Cut

the pipes with an abrasive cutoff saw, plasma cutter,

or compound snips. If using snips, start the cut at

the male end and follow a spiral path around the pipe

until the cutoff mark is reached. File off any burrs

or rough edges that develop in the cutting process

and clean off any dust or grit. If the cutting process

distorts the roundness of the pipes, carefully use your

thumbs to re-round the ends.

b. Select a section that is longer than the required

length.

c. It will be necessary to disassemble the vent prior to

cutting.

Stand the section on end with the holes up. Find the

end of snap ring and pry it out of its groove, being

careful not to damage the ends of the vent pipes.

Pull up on end of the snap ring and pull it out from

the end of the pipe. It may want to spiral out as it is

removed. After the snap ring is removed, the inner

vent pipe can be separated from the outer jacket.

g. Reassemble the inner vent into the outer jacket and

reinstall the snap ring into the groove. Push the

inner vent into the outer jacket until the triangle on

the inner vent is seated ﬁrmly against the bead on

outer jacket. Start one end of the snap ring into the

groove of the outer pipe. Slowly turn and feet the

snap ring into the groove in a spiral motion, and

continue around the pipe until the snap ring is fully

inserted. Ensure that the triangle on the inner vent is

all the way down against the bead of the outer jacket

by pushing in ﬁrmly. Also ensure that the snap ring

is completely in the groove all the way around outer

jacket.

d. Add 2” to the distance measured previously for the

cut length of the outer jacket. Mark a cut line on the

outer jacket on the male end (the end without holes in

it).

An effective way of marking is to run a length of tape

around the section, assuring a square cut.

9. Air Intake Connections for Direct Vent and Sealed

Combustion Appliances*:

The Air Intake Tee may be used on approved direct vent

and sealed combustion appliances that have separate (non-

concentric) air intake and ﬂue exhaust collars. The male end

of the tee connects to EZ Seal appliance adapters and the tee

takeoff/snout connects to the appliance air intake.

•

Insert the male end of the Air Intake Tee into the female

end of the EZ Seal vent section or appliance adapter and

complete the ring and tab connection.

Insert the male end of the next SC section into the female

end of the Air Intake Tee and secure as described elsewhere

in this manual.

Connect the tee takeoff to the appliance combustion air inlet

using appropriate hose or pipe.

Direct Vent Appliances are constructed and installed so that

all air for combustion is supplied directly from the outside

atmosphere. The passage for the combustion air is allowed

a small amount of leakage in the building environment. No

special installation considerations are required to use Saf-T

Vent SC on Direct Vent appliances unless speciﬁed by the

appliance manufacturer. Sealed Combustion appliances are

similar to Direct Vent except the combustion air passage must

be sealed to prevent leakage within the building envelope.

When Saf-T Vent SC is used on approved Sealed Combustion

appliances the joints of the outer jacket must be sealed with

a foil tape (example: 3M 425), or approved silicone sealant

(example: Dow Corning 732).

10. Condensate Drains:

When An Internal Condensate Drain is NOT Part of the

Appliance:

•

A Saf-T Vent SC In-Line Drain Section is strongly

recommended. Install this drain ﬁtting as close to the

appliance ﬂue collar as possible.

•

A condensate drain is required for every 30 feet of

horizontal vent and at/near the bottom of a vertical stack.

•

Use the In-Line Drain Section for a straight horizontal or

vertical run. When used horizontally, rotate the ﬁtting so that

the drain tube is as vertical as possible.

•

A Condensate Drain Tube Kit is available to direct the

condensate to an appropriate location, i.e. ﬂoor drain or

vented sanitary sewer connection. A trap loop must be

formed into the drain hose and must be a diameter that is

at least four (4) times the appliance’s rated stack pressure

in inches of water column or 3 inches, whichever is

greater. Secure the loop with a cable tie. Prior to ﬁnal

assembly the trap loop must be ‘primed’ by pouring a

small quantity of water into the drain hose. Inspect at least

annually to verify the trap is ‘primed’.

•

Follow all local and national codes and regulations for the

draining of acidic condensate.

In cold climates do not install a condensate drain on the

exterior of the building. Doing so may result in dangerous

icy conditions on surfaces near the drain and may cause

damage to the vent system and/or the building exterior.

11. Horizontal Supports:

Saf-T Vent SC must have supports for every six (6) feet of horizontal run and after every transition from vertical to

horizontal. Support hangers by themselves do not maintain the necessary clearances to combustible materials; be sure to

consider clearances when planning the system.

The supports must be secured to solid material using at least #10 fasteners. Do not fasten supports to drywall sheathing

without using hollow wall anchors. The conduit supports must maintain the ¼” per foot pitch to avoid collection of

condensate in the vent. Position the vent so that the welded seam is on the top.

0” Clearance Support Clamp, (SC_ _SUP): Attach the bracket to the structure but do not tighten in place. Open the

hose clamp and slip it under the support bracket. Position the clamp between the mounting screws and rotate the clamp

so that the screw housing will be accessible after the vent is installed. Restart the threads on the hose clamp and securely

tighten the mounting screws to the structure. This can also be installed vertically.

1” Clearance Support Clamp, (SC_ _SUP1): Supports the vent at 1” clearance to the structure. Line up the support

mounting brackets so that the mounting screws will follow the center line of the vent section. This can also be installed

vertically.

Support Clamp, (4_ _27SS): Support clamps are sold in pairs and can be clamped around the vent and suspended from a

rod or cable. They can be used singularly as a saddle clamp to rest the vent in and suspended from two (2) rods or cables.

Support Legs Rotated Horizontally: Support legs can be used on horizontal runs by rotating the clamp at the rivet

connection. The legs can be cut to shorter lengths if necessary.

Vertical Supports, (SC_ _VSL): Vertical support legs can be used above or below a structure for support. To install,

slide the support clamp over the end of the vent section, leaving the clamp loose. Position the support legs and install

two (2) screws through each leg into the structure. Tighten the clamp around vent pipe. The legs can be cut to shorter

lengths if necessary and can rotate around the support clamp at the rivet connection. By rotating the clamp to a horizontal

position the support legs can be used on horizontal runs.

Fire Stop/Wall Thimble/Support, (SC_ _FS):

•The Saf-T Vent SC Fire Stop can be used as a ﬁrestop, a wall thimble, or as a support plate.

•To use as a Wall Thimble prepare an opening according to the chart below. Remove any insulation from the opening,

using additional framing if necessary. Attach the plate over the center of the opening using appropriate fasteners.

•Install the vent section through the thimble plate and secure the section to the thimble by screwing the self-tapping

screws through the holes in the tabs on the plate and into the outer wall of the vent. Apply silicone sealant around the vent

section where it passes through the plate and around the plate where it is attached to the structure.

•To use as a Firestop before passing through ceilings or enclosed chases, prepare a round or square opening ¼” larger than

the outer jacket (5¼” for 3” vent or 7¼” for 4” vent). Remove any insulation from the opening. Secure the ﬁrestop to

the structure at the four (4) corners. Install the vent section through the ﬁrestop and secure to the thimble by screwing the

self-tapping screws through the holes in the tabs on plate and into outer wall of the vent. This method can also be used to

support the vent section either vertically or horizontally.

Tall Cone Flashing:

Directly On Roof or Curb:

Tall Cones are available for ﬂat (SC_ _TCF), 2/12 pitch (SC_ _TCFA), and 6/12 - 12/12 pitch roofs (SC_ _TCFB).

Prepare a square or round opening at least 1/4” larger than the outer jacket (5¼” for 3” vent or 7¼” for 4” vent). Remove

any insulation from the opening. Apply weather-stripping or outdoor caulk to the bottom of the cone plate and attach the

plate to the roof using common construction methods. Flash over the cone plate and seal the fastener heads using normal

rooﬁng requirements. When the vent pipe is in place through the Tall Cone, attach a storm collar (sold separately) around

the pipe. Apply high temperature silicone sealant around the pipe where it passes through the top of the storm collar.

Continue to install vent sections as needed to meet the height requirements by code. Seal weather exposed joints of the

outer jacket with foil tape or an exterior grade silicone sealant.

Vertical Terminations, (SC_ _VT): Install the vertical termination adapter into the last vent section and secure with the

three (3) self-tapping screws provided. If the exhaust termination needs to be extended, a section of EZ Seal vent can be

connected directly to the vertical termination adapter. Seal weather exposed joints of the outer jacket with foil tape or

an exterior grade silicone sealant. To allow for inspection of the system, do not seal the exhaust termination.

H. Indoor Air Installation – See Figures 12, 13, 14, 15 and 16.

1. Do not exceed maximum vent length. Refer to

Table 4.

Vertical –

10. Installation of a vertical vent tee 8116304U is

required on all vertical vent applications. See

Figure 6. Attach vertical vent drain tee directly to

elbow or horizontal pipe from an elbow immediately

after vent connector.

Horizontal –

2. Maintain minimum ¼ inch per foot slope in

horizontal runs.

3 Recommended horizontal installation consists of

vent being sloped down away from boiler. See

Figure 12.

11. Install ﬁre stops where vent passes through ﬂoors,

ceilings or framed walls. The ﬁre stop must close

the opening between the vent pipe and the structure.

Fire stop manufacturers are Air-Jet, American Metal

Products, Metal-Fab, and Simpson Dura-Vent.

4. Slope horizontal runs minimum ¼ inch per foot.

Slope towards vertical vent drain tee. Position weld

seams in vent pipes, in all horizontal runs, at the top

to avoid condensate from lying on the seams.

12. Whenever possible install vent straight through roof.

Refer to Figure 13 if offset is necessary. Maintain

minimum clearance to combustible materials.

5. Use appropriately designed thimbles when passing

through combustible walls (thimble use optional

for noncombustible walls). Insert thimble through

wall from outside. Secure outside ﬂange to wall

with nails or screws, and seal with sealant material.

Install inside ﬂange to inside wall, secure with nails

or screws, and seal with sealant material.

13. Install Vent Terminal.

a. Size roof opening to maintain minimum

clearance from combustible materials.

b. Use appropriately designed vent ﬂashing

when passing through roofs. Follow ﬂashing

manufacturers’ instructions for installation

procedures. Flashing manufacturers are Air-

Jet, American Metal Products, Metal Fab, and

Simpson Dura-Vent.

6. For noncombustible wall application when thimble

is not used, size opening such that female (bell) end

with locking band attached cannot pass through.

7. Join vent terminal to vent pipe. Locate vent

terminal between seventeen (17) inches and twenty-

nine (29) inches from wall when joined to inside

vent piping. See Figure 14.

c. Extend vent pipe to maintain minimum vertical

and horizontal distance of twelve (12) inches

from roof surface. Allow additional vertical

distance for expected snow accumulation.

Provide brace as required. Refer to Figure 15.

8. Insert vent pipe through thimble/opening from

outside and join to vent system. Apply sealant

between vent pipe and opening/thimble to provide

weathertight seal.

d. Vertical venting requires ﬂashing and a storm

collar to prevent moisture from entering the

structure.

9. Join vent terminal to 45° elbow included in kit. Join

45° elbow/terminal assembly to vent pipe. Refer

to Section C for proper procedures for joining vent

pipe and ﬁttings. See Figure 3 .

e. Install storm collar on vent pipe immediately

above ﬂashing. Apply Dow Corning Silastic 732

RTV Sealant between vent pipe and storm collar

to provide weathertight seal.

f. Attach vent terminal.

14. Install supplied air intake terminal onto collar of the

jacket enclosure. See Figure 16.