TRANE Furnace/Heater, Gas Manual L0903221

User Manual: TRANE TRANE Furnace/Heater, Gas Manual TRANE Furnace/Heater, Gas Owner's Manual, TRANE Furnace/Heater, Gas installation guides

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ISTALL

GU E

ALL phases of this installation must comply with

NATIONAL, STATE AND LOCAL CODES

*UD-IN-2

18-CD19D7-1

Library Service Literature

Product Section Unitary

Product Furnace -- Gas

Model *UD

Literature Type Installer's Guide

Sequence 2

Date April 1995

File No. SV-UN-FURN-*UD-IN-2 4/95

Supersedes New

Model:

*UD040C924H

*UD040C930H

*UD060C924H

*UD060C936H

*UD080C924H

*UD080C936H

*UD080C948H

*UD100C936H

*UD100C945H

*UD100C948H

*UD100C960H

*UD100C961H

*UD120C954H

*UD120C960H

*UD140C960H

* -- The first letter may be "A" or "T"

Upflow !Horizontal

Gas-Fired Furnaces

"Fan Assisted

Combustion System"

IMPORTANT-- This Document iscu stomer property and is to remain with this unit.

Please return to service information pack upon completion of work.

Since the manufacturer has a policy of continuous

product improvement, it reserves the right to change

specifications and design without notice.

Pub. No. 18-CD19D7-1

INSTALLER 'S GUIDE

CONTENTS PAGE

INSTALLATION

General Installation Instructions .................................................................................................................................... 2

Location & Clearances ..................................................................................................................................................... 2

Horizontal Installation ..................................................................................................................................................... 3

Air for Combustion and Ventilation ........................................................................................................................... 3&4

Duct Connections .............................................................................................................................................................. 5

Return Air -- Filters ................................................................................................................................................... 5&6

Venting-- General Information ................................................................................................................................. 6&7

Venting Into a Masonry Chimney ............................................................................................................................ 7

Single Appliance Venting (with Tables) .............................................................................................................. 8-11

Common Venting (with Tables) ......................................................................................................................... 12-19

Venting Examples .............................................................................................................................................. 20-22

Electrical Connections .................................................................................................................................................... 23

Gas Piping ....................................................................................................................................................................... 23

START-UP AND ADJUSTMENT

Preliminary Inspections ................................................................................................................................................. 24

Combustion and Input Check ........................................................................................................................................ 24

High Altitude Derate ...................................................................................................................................................... 24

Sequence of Operation ................................................................................................................................................... 25

Lighting Instructions ..................................................................................................................................................... 25

Control and Safety Switch Adjustment ......................................................................................................................... 26

ABNORMAL CONDITIONS .............................................................................................................................................. 26

FIELD WIRING DIAGRAMS ............................................................................................................................................ 27

OUTLINE DRAWING ......................................................................................................................................................... 28

GENERAL

The manufacturer assumes no responsibility for equipment

installed in violation of any code or regulation.

It is recommended that Manual J of the Air Conditioning

Contractors Association (ACCA) or A.R.I. 230 be followed in

estimating heating requirements. When estimating heating

requirements for installation at Altitudes above 2000 ft., re-

member the gas input must be reduced (See GAS INPUT

ADJUSTMENT).

Material in this shipment has been inspected at the

factory and released to the transportation agency with-

out known damage. Inspect exterior of carton for evi-

dence of rough handling in shipment. Unpack carefully

after moving equipment to approximate location. If dam-

age to contents is found, report the damage immediately

to the delivering agency.

Codes and local utility requirements governing the installation

of gas fired equipment, wiring, plumbing, and flue connections

must be adhered to. In the absence of local codes, the installa-

tion must conform with the National Fuel Gas Code ANSI

Z223.1 "latest edition" or CAN/CGA B149 Installation Codes.

The latest code may be obtained from the American Gas Asso-

ciation Laboratories, 8501 E. Pleasant Valley Rd., Cleveland,

Ohio 44131.

These furnaces have been classified as Fan Assisted Combus-

tion system CATEGORY I furnaces as required by ANSI Z21.47

"latest edition" and CAN/CGA 2.3. Therefore they do not

require any special provisions for venting other than what is

indicated in these instructions. (Category I defined page 6).

NOTE: To prevent shortening its service life, the furnace

should not be used as a "Construction Heater" during the

finishing phases of construction. The low return air

temperatures can lead to the formation of condensate

even though this is a non-condensing model. Condensate

in the presence of chlorides and fluorides from paint,

varnish stains, adhesives, cleaning compounds, and ce-

ment create a corrosive condition which may cause

rapid deterioration of the heat exchanger.

LOCATION AND CLEARANCES

The location of the furnace is normally selected by the architect,

the builder, or the installer. However, before the furnace is

moved into place, be sure to consider the following require-

ments:

1. Is the location selected as near the chimney or vent and as

centralized for heat distribution as practical?

2. Do all clearances between the furnace and enclosure equal

or exceed the minimums stated in Table 1.

3. Is there sufficient space for servicing the furnace and other

equipment? A minimum of 24 inches front accessibility to the

furnace must be provided. Any access door or panel must permit

removal of the largest component.

4. Are there at least 3 inches of clearance between the furnace

combustion air openings in the front panel and any closed panel

or door provided? (See Fig. 1)

5. Are the ventilation and combustion air openings large

enough and will they remain unobstructed? If outside air is

used, are the openings set above the highest snow accumulation

level? (See the Air for Combustion and Ventilation section)

6. Allow sufficient height in supply plenum above the furnace

to provide for cooling coil installation, if the cooling coil is not

installed at the time of this furnace installation.

7. A furnace shall be installed so electrical components are

protected from water.

8. If the furnace is installed in a residential garage, it must

be installed so that the burners, and the ignition source are

located not less than 18 inches above the floor and the furnace

must be located or protected to avoid physical damage from

vehicles.

CAUTION: Do not install the furnace in a corrosive or

contaminated atmosphere.

WARNING: Do not install the furnace directly on carpet-

ing, tile or other combustible material other than wood

flooring.

Page 2 Pub. No. 18-CD19D7-1

INSTALLER 'S GUIDE

UPFLOW CLOSET

MINIMUM CLEARANCE TO COMBUSTIBLE MATERIALS

LEFT SIDE 0 INCHES

RIGHT SIDE 0 INCHES (+)

FLUE 6 INCHES (#)

HORIZONTAL CLOSET (See Note 2)

TOP 2 INCHES (+)

FLUE 6 INCHES (#)

FRONT 3 INCHES (Note 1)

HORIZONTAL ALCOVE (See Note 2)

TOP 1 INCH (+)

FLUE 6 INCHES (+)

FRONT 18 INCHES

# - May be 1 inch when TYPE B-1 vent pipe is used.

+ - For 14-1/2" cabinets, 3 inches when single wall vent pipe is used.

When the 14-1/2" width models are installed in a horizontal position and a single

wall vent pipe is used, a 6 inch clearance must be supplied between the vent

pipe and combustible flooring.

HORIZONTAL INSTALLATION

This furnace may be installed in an attic or crawl space in the

horizontal position by placing the furnace on the left or right

side (as viewed from the front in the upright position). The

horizontal furnace installation in an attic should be on a service

platform large enough to allow for proper clearances on all

sides and service access to the front of the furnace, (See

Clearance Table and Figure 1). If the furnace is suspended, it

must be supported at both ends and in the middle with clearance

allowed for removal of both access doors. Line contact is only

permissible between lines formed by the intersection of the top

and two sides of the furnace casing and the building joists,

studs, or framing.

// // // // //

TYPICAL HORIZONTAL ATTIC INSTALLATION

FIGURE 1

FRONT 3 INCHES (See Note 1

BACK 0 INCHES

TOP 1 INCH

BACK 3 INCH

SIDES 1 INCH

BACK 0 INCHES

SIDES 0 INCHES

NOTES:

(1) Minimum clearance to the front on the *UD140 model is 6 inches.

(2) May be installed on combustible flooring when TYPE B-1 vent pipe is

used.

*-Frst ettermaybe A or T

AIR FOR COMBUSTION AND VENTILATION

Adequate flow of combustion and ventilating air must not be

obstructed from reaching the furnace. Air openings provided in

the furnace casing must be kept free of obstructions which

restrict the flow of air. Airflow restrictions affect the efficiency

and safe operation of the furnace. Keep this in mind should you

choose to remodel or change the area which contains your

furnace. Furnaces must have a free flow of air for proper

performance.

TABLE 1

Provisions for combustion and ventilation air shall be made in

accordance with "latest edition" of Section 5.3, Air for Combus-

tion and Ventilation, of the National Fuel Gas Code, ANSI

Z223.1, or Sections 7.2, 7.3 or 7.4 of CAN/CGA B149 Installation

Codes, and applicable provisions of the local building codes.

Special conditions created by mechanical exhausting of air and

fireplaces must be considered to avoid unsatisfactory furnace

operation.

Furnace locations may be in "confined space" or "unconfined

space". Unconfined space is defined in Table 2 and Figure 2.

These spaces may have adequate air by infiltration to provide

air for combustion, ventilation, and dilution of flue gases.

Buildings with tight construction (for example, weather strip-

ping, heavily insulated, caulked, vapor barrier, etc.), may need

additional air provided as described for confined space.

50 CU. FT. OR MORE

PER 1000 BTU/HR. INPUT

ALL EQUIP. INSTALLED

DOORS

WATER mCLOTHES

_U_AC_

UNCONFINED

FIGURE 2

TABLE 2

MINIMUM AREA IN SQUARE FEET FOR

UNCONFINED SPACE INSTALLATIONS

FURNACE MAXIMUM WITH 8 FOOT CEILING

BTUH /INPUT MINIMUM AREA IN SQUARE FEET

RATING OF UNCONFINED SPACE

40,000

60,000

80,000

100,000

120,000

140,000

250

375

500

325

750

875

Pub. No. 18-CD19D7-1 Page 3

INSTALLER 'S GUIDE

CONFINED

LESS THAN 50 CU. FT.

PER 1000 BTU/HR. iNPUT

ALL EQUIP iNSTALLED

FIGURE 3

Confined spaces are installations with less than 50 cu. ft. of

space per 1000 BTU/hr input from all equipment installed. Air

for combustion and ventilation requirements can be supplied

from inside the building as in Figure 4 or from the outdoors, as

in Figure 5.

1. All air from inside the building as in Figure 4, Page 4: The

confined space shall be provided with two permanent openings

communicating directly with an additional room(s) of sufficient

volume so that the combined volume of all spaces meets the

criteria for an unconfined space. The total input of all gas

utilization equipment installed in the combined space shall be

considered in making this determination. Refer to Table 3,

Page 4, for minimum open areas required.

2. All air from outdoors as in Figure 5, Page 4: The confined

space shall be provided with two permanent openings, one

commencing within 12 inches of the top and one commencing

within 12 inches of the bottom of the enclosure. The openings

shall communicate directly, or by ducts, with the outdoors or

spaces (crawl or attic) that freely communicate with the out-

doors. Refer to Table 3, Page 4, for minimum open areas

required.

3. The following types of installations will require use of

OUTDOOR AIR for combustion, due to chemical exposures:

* Commercial buildings

* Buildings with indoor pools

* Furnaces installed in commercial laundry rooms

* Furnaces installed in hobby or craft rooms

* Furnaces installed near chemical storage areas.

Exposure to the following substances in the combustion air

supply will also require OUTDOOR AIR for combustion:

* Permanent wave solutions

* Chlorinated waxes and cleaners

* Chlorine based swimming pool chemicals

* Water softening chemicals

* Deicing salts or chemicals

* Carbon Tetrachloride

* Halogen type refrigerants

* Cleaning solvents (such as perchloroethylene)

* Printing inks, paint removers, varnish, etc.

* Hydrochloric acid

* Cements and glues

* Antistatic fabric softeners for clothes dryers

* Masonry acid washing materials

TABLE 3

MINIMUM FREE AREA IN SQUARE INCHES

EACH OPENING

Furnace

Maximum

BTUH/INPUT

Rating

40,000

60,000

80,000

100,000

120,000

140,000

Air

From

Inside

100

120

140

FURNACE ONLY)

Air From Outside

Vertical Horizontal

Duct Duct

10 20

15 30

20 40

25 50

30 60

35 70

Page 4

CONFINED SPACE

AiR FROM iNSiDE BUiLDiNG

ICONFINED --

SPACE

PERMANENT

OPENINGS

FIGURE 4

CONFINED SPACE

AIR FROM OUTDOORS

CONFINED-

SPACE

CONFINED SPACE -_

AiR FROM VENTILATED ATTIC/CRAWL SPACE

ATTIC LOUVERS

TO OUTDOORS

CONFINED"

SPACE

ALTERNATE

iNLET AIR

CONFINED SPACE

AiR FROM

LOUVERS

TO OUTDOORS

CSNFINED-

SPACE

FIGURE 5

The following warning complies with Stats of California Mw, Proposition 65.

&WAR NING: .o.o,,oo.

Exposure to fuel substances or by-products of incomplete

fuel combustion are believed by the State of California to

cause cancer, birth defects, or other reproductive harm.

Pub. No. 18-CD19D7-1

DUCT CONNECTIONS

Air duct systems should be installed in accordance with stan-

dards for air conditioning systems, National Fire Protection

Association Pamphlet No. 90. They should be sized in accordance

with ACCA Manual D or whichever is applicable. Check on

controls to make certain they are correct for the electrical supply.

Central furnaces, when used in connection with cooling units,

shall be installed in parallel or on the upstream side of the

cooling units to avoid condensation in the heating element,

unless the furnace has been specifically approved for down-

stream installation. With a parallel flow arrangement, the

dampers or other means used to control flow of air shall be

adequate to prevent chilled air from entering the furnace, and if

manually operated, must be equipped with means to prevent

operation of either unit unless the damper is in full heat or cool

position.

On any job, flexible connections of nonflammable material may

be used for return air and discharge connections to prevent

transmission of vibration. Though these units have been specifi-

cally designed for quiet, vibration free operation, air ducts can

act as sounding boards and could, if poorly installed, amplify the

slightest vibration to the annoyance level.

When the furnace is located in a utility room adjacent to the

living area, the system should be carefully designed with returns

which minimize noise transmission through the return air grille.

Although these winter air conditioners are designed with large

blowers operating at moderate speeds, any blower moving a high

volume of air will produce audible noise-which could be obj ection-

able -when the unit is located very close to a living area. It is often

advisable to route the return air ducts under the floor or through

the attic. Such design permits the installation of air return

remote from the living area (i.e. central hall).

When the furnace is installed so that the supply ducts carry air

circulated by the furnace to areas outside the space containing

the furnace, the return air shall also be handled by a duct(s)

sealed to the furnace and terminating outside the space contain-

ing the furnace.

Where there is no complete return duct system, the return

connection must be run ful! size from the furnace to a

location outside the utility room, basement, attic, or

crawl space.

Do Not install return air through the back of the furnace cabinet.

RETURN AIR DUCT CONNECTION

1. Set the furnace in place.

2. For side return installations, remove the insulation around

the opening in the blower compartment.

3. The side panels of this furnace include locating notches that

are used as guides for cutting an opening for return air, Refer to

Figure 6 and the outline drawing on page 28 for duct connection

dimensions for various furnaces.

4. If a 3/4" flange is to be used for attaching the air inlet duct,

add to cut where indicated by solid lines in Fig. 6. Cut corners

diagonally and bend outward to form flange.

5. If flanges are not required, and a filter frame is installed, cut

along knockout guidelines.

6. The filter retainer is factory supplied for bottom return. Use

the filter retainer on side or bottom if filter is to be used within

the furnace cabinet.

INSTALLER 'S GUIDE

LOCATING

NOTCHES

PROVIDED

FOR SIDE

RETURN

CUTOUT

* SEE OUTLINE DRAWING

I CUT OUT

FOR

l// SIDE

FILTER

_FRONT

of Furnace

FIGURE 6

All return air duct systems should provide for installation of

return air filters.

7. Connect duct work to furnace. See Outline Drawing on page

28 for supply and return duct size and location. Flexible duct

connectors are recommended to connect both supply and return

air ducts to the furnace. If only the front of the furnace is

accessible, it is recommended that both supply and return air

plenums are removable.

8. When replacing a furnace, old duct work should be cleaned

out. Thin cloths should be placed over the registers and the

furnace fan should be run for 10 minutes. Don't forget to remove

the cloths before you start the furnace.

RETURN AIR FILTER

Furnaces are factory supplied -with a high velocity cleanable type

air filter which may be located within the furnace blower com-

partment in either a BOTTOM or SIDE (left side or right side)

return air inlet. Some filters may need to be trimmed for

side or bottom filter use. See Outline Drawing.

To replace filter, remove the blower access door, Push the filter

back and up to clear the front filter retaining bracket. The filter

will flex (or bow). Gently pull the filter out. Replace the filter

in the same manner, making sure that the filter is secured in

both front and back brackets. Replace the blower access door.

Use high velocity replacement filter only.

TABLE 4

MODEL

NUMBER

*UD040C924H

*UD040C930H

*UD060C924H

*UD060C936H

*UD080C924H

*UD080C936H

*UD080C948H

*UD100C936H

*UD100C945H

CABINET

WIDTH

14-1/2

17-1/2

FILTER

SIZE

1 -16X25X1

1 -17X25X1

*UD100C948H

*UD100C960H 21 1 - 20 X 25 X 1

*UD120C954H

*UD100C960H

*UD120C960H## 24-1/2 1 - 24 X 25 X 1

*UD140C960H##

* - First letter may be "A" or "T"

## - Requires 2 sides; side and bottom; or bottom only return,

Pub. No. 18-CD19D7-1 Page 5

INSTALLER 'S GUIDE

FILTER

-,%

,.\BLOWER

ACCESS

FILTER

RETAINER

Typical Bottom Return Filter

BLOWER

"-'ACCESS

DOOR

Typical Side Return Filter

FIGURE 7A

Typical Horizontal Horizontal Filter

FIGURE 7B

FILTER RETAINER BRACKETS FOR SIDE AIR

RETURN

If side air return is desired, it is necessary to move the 2 filter

retainer brackets from the bottom of the furnace and reinstall

them on the side. The following instructions should be used:

a. Remove the front doors.

b. Remove the filter.

c. Carefully place the unit on its back.

d. Using a 5/16" nut driver, remove the 4 screws holding the

filter retainer brackets.

e. Reinstall the filter retainer brackets on the desired side.

(See Figure 7A "Typical Side Return Filter").

GENERAL VENTING INSTRUCTIONS

VENT PIPING

These furnaces have been classified as Fan-Assisted Combus-

tion System, Category I furnaces under the "latest edition"

provisions of ANSI Z21.47 and CAN/CGA 2.3 standards, which

operate with a non-positive vent static pressure and with a flue

loss of not less than 17 percent.

NOTE: If desired, a sidewall termination can be accomplished

through the use of an "add-on" draft inducer. The indueer must

be installed according to the inducer manufacturer's instruc-

tions. Set the barometric pressure relief to achieve -0.02 inch

water column.

NOTE: When an existing furnace is removed from a venting

system serving other appliances, the venting system is likely to

be too large to properly vent the remaining attached appliances.

The following steps shall be followed with each appliance

connected to the venting system placed in operation, while any

other appliances connected to the venting system are not in

operation:

a. Seal any unused openings in the venting system;

b. Inspect the venting system for proper size and horizontal

pitch as required in the National Fuel Gas Code, ANSI Z223.1

or the CAN/CGA B149 Installation Codes and these instruc-

tions. Determine there is no blockage or restriction, leakage,

corrosion and other deficiencies which could cause an unsafe

condition;

c. In so far as is practical, close all building doors and windows

and all doors between the space in which the appliance(s)

connected to the venting system are located and other spaces of

the building. Turn on clothes dryers and any appliances not

connected to the 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;

d. Follow the lighting instructions. Place the appliance being

inspected in operation. Adjust thermostat so the appliance

shall operate continuously;

e. Test for draft hood equipped appliance spillage at the draft

hood relief opening after 5 minutes of main burner operation.

Use the flame of a match or candle;

f After it has been determined that each appliance remaining

connected to the 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

condition of use;

Page 6 Pub. No. 18-CD19D7-1

g. If improper venting is observed during any of the above tests,

the venting system must be corrected.

All vent installations must be in accordance with the "latest

edition" provisions of the National Fuel Gas Code, ANSI Z223.1

section 7 and/or CAN/CGA B149 Installation Codes or the Vent

Tables.

The furnace shall be connected to a factory built chimney

or vent complying with a recognized standard, or a

masonry or concrete chimney lined with a lining mate-

rial acceptable to the authority having jurisdiction.

NOTE: Furnace venting into an unlined masonry chim-

ney or concrete chimney is prohibited.

VENTING INTO A MASONRY CHIMNEY

If the chimney is oversized, the liner is inadequate, or flue-gas

condensation is a problem in your area, consider using the

chimney as a pathway or chase for type "B" vent or flexible

vent liner. If flexible liner material is used, size the vent using

the "B" vent tables, then reduce the maximum capacity by 20%

(multiply 0.80 times the maximum capacity).

TABLE 5

MASONRY CHIMNEY VENTING

Type Furnace

Single Fan

Assist

Fan Assist

Natural

Tile Lined Chimney

Internal External "B" Vent

No No Yes

Yes No Yes

Chimney Lining

Flexible Metal

Liner

*Yes

:l¢ye s

:ltye S

* Flexible chinmey liner size is determined by using the type "B" vent size for the

available BTUH input, then reducing the maximum capacity by 20% (multiply

maximum capacity times 0.80). The rninin_um capacity is the same as shown in

the "B" vent tables.

Internal Masonry Chimneys

Venting of fan assisted appliances into a lined, internal ma-

sonry chimney is allowed only if it is common vented with at

least one natural draft appliance; OR, if the chimney is lined

with type "B", double wall vent or suitable flexible liner mate-

rial, (See Table 5).

NOTE: The chimney liner must be thoroughly inspected to

insure no cracks or other potential areas for flue gas leaks are

present in the liner. Liner leaks will result in early deteriora-

tion of the chimney.

External Masonry Chimney

Venting of fan assisted appliances into external chimneys (one

or more walls exposed to outdoor temperatures), requires the

chimney be lined with type "B", double wall vent or suitable

flexible chimney liner material. This applies in all combina-

tions of common venting as well as for fan assisted appliances

vented alone.

The following installation practices are recommended to mini-

mize corrosion caused by condensation of flue products in the

furnace and flue gas system.

1. Avoid an excessive number of bends.

2. Horizontal runs should pitch upward at least 1/4" per foot.

3. Horizontal runs should be as short as possible.

4. All vent pipe or connectors should be securely supported and

must be inserted into, but not beyond the inside wall at the

chimney vent.

Pub. No. 18-CD19D7-1

INSTALLER 'S GUIDE

5. When vent connections must pass through walls or partitions

of combustible material, a thimble must be used and installed

according to local codes.

6. Vent pipe through the roof should be extended to a height

determined by National Fuel Gas Code or local codes. It should

be capped properly to prevent rain -water from entering the vent.

Roof exit should be waterproofed.

7. Use type "B" double -wall vent when vent pipe is routed

through cool spaces, (below 60°F).

8. Where long periods of airflow are desired for comfort, use

long fan cycles instead of continuous airflow.

9. Apply other good venting practices as stated in the venting

section of the National Fuel Gas Code ANSI Z223.1 "latest

edition".

10. Vent connectors serving appliance vented by natural

draft or non-positive pressure shall not be connected

into any portion of a mechanized draft system operating

under positive pressure.

11. Horizontal pipe runs must be supported by hangers, straps

or other suitable material in intervals at a minimum of every

3 feet of pipe.

12. A furnace shall not be connected to a chimney or flue

serving a separate appliance designed to burn solid fuel.

13. The flow area of the largest section of vertical vent or

chimney shall not exceed 7 times the smallest listed appliance

categorized vent area, flue collar area, or draft hood outlet area

unless designed in accordance with approved engineering

methods.

Maximum Vent or Tile _(D*) 2

Lined Chimney Flow Area = _ X 7

*Draf_hood outlet diameter, flue collar diameter, or listed appliance categorized vent diameter.

TABLE 6

GAS VENT TERMINATION

ROOF PITCH

FLAT TO 7/12

OVER 7112 TO 8/12

OVER 8112 TO 9/12

OVER 9/12 TO 10/12

OVER 10/12 TO 11/12

OVER 11/12 TO 12/12

OVER 12/12 TO 14/12

OVER 14/12 TO 16/12

OVER 16/12 TO 18/12

OVER 16/12 TO 20/12

OVER 20/12 TO 22/12

MINIMUM HEIGHT

1.0 FEET *

1.5 FEET

2.0 FEET

2.5 FEET

3.25 FEET

4.0 FEET

5.0 FEET

6.0 FEET

7.0 FEET

7.5 FEET

8.0 FEET

* THIS REQUIREMENT COVERS MOST INSTALLATIONS

LISTED

CAP

VERTICAL WALL

8' MIN.

LOWEST DISCHARGE

OPENING

(

12 _'.\

ROOF PITCH iS )(//12

THE VENT TERMINATION SHOULD NOT BE

LESS THAN 8 FT FROM A VERTICAL WALL

FIGURE 8

Page 7

INSTALLER 'S GUIDE

SIZING OF VENTING SYSTEMS SERVING APPLI-

ANCES EQUIPPED WITH DRAFT HOODS AND APPLI-

ANCES LISTED FOR USE WITH TYPE B VENTS

Definitions. The following definitions apply to tables in

the venting portion of this Installer's Guide:

Fan-Assisted Combustion System - An appliance

equipped with an integral mechanical means to either draw

or force products of combustion through the combustion

chamber and/or heat exchanger.

FAN Min. - The minimum appliance input rating of a

Category I appliance with a fan-assisted combustion system

that could be attached to the vent.

FAN Max. - The maximum appliance input rating of a

Category I appliance with a fan-assisted combustion system

that could be attached to the vent.

NAT Max. - The maximum input rating of a Category I

appliance equipped with a draft hook that could be attached

to the vent. There are no minimum appliance input ratings

for draft hood equipped appliances.

FAN+FAN - The maximum combined appliance input

rating of one or more fan-assisted appliances attached to the

common vent.

FAN+NAT - The maximum combined appliance input

rating of one or more fan-assisted appliances attached to the

common vent.

NAT+NAT - The maximum combined input rating of two

or more draft hood equipped appliances attached to the

common vent.

NR - Vent configuration is not recommended due to

potential for condensate formation and/or pressurization of

the venting system.

NA- Vent configuration is not applicable due to physical

or geometric constraints.

Notes for Single Appliance Vents: (See Tables J-1 to J-5)

If the vent size determined from the tables is smaller than

the appliance draft hood outlet or flue collar, the smaller

size shall be permitted to be used, provided:

(a) The total vent height ('T') is at least i0 feet;

(b) Vents for appliance draft hood outlets or flue collars

12 inches in diameter or smaller are not reduced more

than one table size;

above 12 inches in diameter are not reduced more than

two table sizes;

(d) The maximum capacity listed in the tables for a fan-

assisted appliance is reduced by 10 percent (.09 x

maximum table capacity);

(e) The draft hood outlet is greater than 4 inches in

diameter. Do not connect a 3 inch diameter vent to a

4 inch diameter draft hood outlet. This provision ("e")

shall not apply to fan-assisted appliances.

Single appliance venting configurations with zero (0")

lateral lengths in Tables J-l, J-2 and J-5 shall have no

elbows in the venting system. For vent configurations

with lateral lengths, the venting tables include allowance

for two 90 degree (1.57 rad) elbows. For each additional 90

degree (1.57 rad) elbow, or equivalent beyond two, the

maximum capacity listed in the venting table should be

reduced by 10 percent (0.90 x maximum table capacity).

Note: Two 45 degree (0.79 rad) elbows are equivalent to

one 90 degree (1.57 rad) elbow.

Zero ("0") lateral ("L") shall apply only to a straight

vertical-vent attachment to a top outlet draft hood or flue

collar.

Sea-level input ratings shall be used when determining

maximum capacity for high-altitude installation. Actual

input (derated for altitude) shall be used to determine

minimum capacity for high altitude installation.

Numbers followed by asterisk (*) in Tables J-3, J-4 and J-5

indicate the possibility of continuous condensation,

depending on locality. Consult local serving gas supplier

or local codes.

10.

11.

12.

For appliances with more than one input rate, the mini-

mum vent capacity determined from the tables shall be

greater than the highest appliance input rating.

Listed corrugated chimney-liner systems in masonry

chimneys shall be sized by using Tables J-1 or J-2 for

Type B vents with the maximum capacity reduced by

20 percent (0.80 maximum table capacity) and the mini-

mum capacity as shown in Tables J- 1 and J-2. Corrugated

metal venting systems installed with bends or offsets shall

have their maximum capacity reduces. (See Note 2).

If the vertical vent has a larger diameter than the vent

connector, use the vertical vent-connector diameter to

determine the minimum vent capacity and the connector

diameter to determine the maximum vent capacity. The

flow area of the vertical vent shall not exceed seven times

the flow area of the listed appliance categorized vent area,

flue collar area, or draft hood outlet area, unless desig-

nated in accordance with approved engineering methods.

The tables included in this part shall be used for chim-

neys and vents not exposed to the outdoors below the roof

line. Exterior chimneys or vents exposed to the outdoors

below the roof line may experience continuous condensa-

tion depending on locality. Consult local serving gas

suppliers, or the authority having jurisdiction. A Type B

vent or listed chimney lining system passing through an

otherwise unused masonry chimney flue shall be consid-

ered to be an interior vent system.

Vent connectors shall not be sized upward more than two

sizes greater than the appliance categorized vent diam-

eter, flue collar diameter, or draft hood outlet diameter.

In a single run of vent or vent connector, more than one

diameter and type shall be permitted to be used provided

that all the sizes and types are permitted by the tables.

Interpolation shall be permitted in calculating capacities

for vent dimensions which fall between table entries.

13. Extrapolation beyond the table entries shall not be per-

mitted.

SEE EXAMPLES ON PAGES 20 TO 22.

Page 8 Pub. No. 18-CD19D7-1

INSTALLER 'S GUIDE

TYPICAL VENTING APPLICATIONS

Table J-1 shall be used when Type B Double-Wall

Vent Pipe is used for both the vent connector and the

vent.

VENT CONNECTOR

Note: The appliance may be either Category I

Draft Hood equipped or Fan-assisted type.

FIGURE J-1

Table J-3 shall be used when a Type B Double-Wall Vent

Connector is attached to a Tile Lined Masonry Chimney.

Tile-Lined

MasonryChirnney---m_

Vent

Connecter _ L-- H

Note: "A" is the

equivalent cross

sectional area

of the Tile Liner

Note: The appliance may be either Category I

Draft Hood equipped or Fan-assisted type.

FIGURE J-3

Table J-2 shall be used when a Single Wall Metal Vent

Connector is attached to Type B Double-wall Vent.

VENT CONNECTOR

::Z-:

VENT

Note: The appliance may be either Category I

Draft Hood equipped or Fan-assisted type.

FIGURE J-2

Table J-4 shall be used when a Single-wall Metal Vent

Connector is attached to a Tile Lined Masonry Chimney,

Note: "A" is the

equivalent cross

sectional area

of the Tile Liner

Note: The appliance may be either Category I

Draft Hood equipped or Fan-assisted type.

FIGURE J-4

Pub. No. 18-CD19D7-1 Page 9

INSTALLER 'S GUIDE

TABLE J-1

Capacity of Type B Double-Wall Vents with Type B Double-

Wall Connectors Serving a Single Category I Appliance

TABLE J-2

Capacity of Type B Double-Wall Vents with Single-Wall Metal

Connectors Serving a Single Category I Appliance

Height Lateral

H L

(fl) (_)

6 O

8 O

10 O

15 O

2O O

3O O

5O O

Vent Connector Diameter - D (inches)

3,, I 4,, I 5,, I °"

Appliance Input Rating in Thousands of Btu Per Hour

FAN NAT _ NAT _ NAT _ NAT

Min Max Max Max Max I Min Max Max

0 78 46 O 152 86 0 251 141 0 375 205

13 51 36 18 97 67 27 157 105 32 232 157

21 49 34 30 94 64 39 153 103 50 227 153

25 46 32 36 91 61 47 149 100 59 223 149

0 84 50 0 165 94 0 276 155 0 415 235

12 57 40 16 109 75 25 178 120 28 263 180

23 53 38 32 103 71 42 171 115 53 255 173

28 49 35 39 98 66 51 164 109 64 247 165

0 88 53 0 175 100 0 295 166 0 447 255

12 61 42 17 118 81 23 194 129 26 289 195

23 57 40 32 113 77 41 187 124 52 280 188

30 51 36 41 104 70 54 176 115 67 267 175

0 94 58 0 191 112 0 327 187 0 502 285

11 69 48 15 136 93 20 226 150 22 339 225

22 65 44 30 130 87 39 219 142 49 330 217

29 59 42 40 121 82 51 206 135 64 315 208

35 53 39 48 112 76 61 195 128 76 301 198

0 97 61 0 202 119 0 349 202 0 540 307

10 75 51 14 149 100 18 250 166 20 377 249

21 71 48 29 143 96 38 242 160 47 367 241

28 64 44 38 133 89 50 229 150 62 351 228

34 58 40 46 124 84 59 217 142 73 337 217

48 52 35 55 116 78 69 206 134 84 322 206

0 100 64 0 213 128 0 374 220 0 587 336

9 81 56 13 166 112 14 283 185 18 432 280

21 77 54 28 160 108 36 275 176 45 421 273

27 70 50 37 150 102 48 262 171 59 405 261

33 64 NR 44 141 96 57 249 163 70 389 249

56 58 NR 53 132 90 66 237 154 80 374 237

NR NR NR 73 113 NR 88 214 NR 104 346 219

0 101 67 g 216 134 0 397 232 0 633 363

8 86 61 11 183 122 14 320 206 15 497 314

20 82 NR 27 177 119 35 312 200 43 487 308

26 76 NR 35 168 114 45 299 190 56 471 298

59 70 NR 42 158 NR 54 287 180 66 455 288

NR NR NR 50 149 NR 63 275 169 76 440 278

NR NR NR 69 131 NR 84 250 NR 99 410 259

Height Lateral

H L

(ft) (ft)

6 0

8 0

I0 0

15 0

2O 0

30 0

5O 0

Vent Connector Diameter - D (inches)

3,, I 4,, I 5,, I °"

Appliance Input Rating in Thousands of Btu Per Hour

!A'_I"AT F I__ __INAT

Min Max/ Max IMin Max I MaxIMin Max I MaxIMin Max I Max

38 77 45 59 151 85 85 249 140 126 373 204

39 51 36 60 96 66 85 156 104 123 231 156

NR NR 33 74 92 63 102 152 102 146 225 152

NR NR 31 83 89 60 114 147 99 163 220 148

37 83 50 58 164 93 83 273 154 123 412 234

39 56 39 59 108 75 83 176 119 121 261 179

NR NR 37 77 102 69 107 168 114 151 252 171

NR NR 33 90 95 64 122 161 107 175 243 163

37 87 53 57 174 99 82 293 165 120 444 254

39 61 41 59 117 80 82 193 128 119 287 194

52 56 39 76 111 76 105 185 122 148 277 186

NR NR 34 97 100 68 132 171 112 188 261 171

36 93 57 56 190 111 80 325 186 116 499 283

38 69 47 57 136 93 80 225 149 115 337 224

51 63 44 75 128 86 102 216 140 144 326 217

NR NR 39 95 116 79 128 201 131 182 308 203

NR NR NR NR NR 72 158 186 124 220 290 192

35 96 60 54 200 118 78 346 201 114 537 306

37 74 50 56 148 99 78 248 165 113 375 248

50 68 47 73 140 94 100 239 158 141 363 239

NR NR 41 93 129 86 125 223 146 177 344 224

NR NR NR NR NR 80 155 208 136 216 325 210

NR NR NR NR NR NR 186 192 126 254 306 196

34 99 63 53 211 127 76 372 219 110 584 334

37 80 56 55 164 111 76 281 183 109 429 279

49 74 52 72 157 106 98 271 173 136 417 271

NR NR NR 91 144 98 122 255 168 171 397 257

NR NR NR 115 131 NR 151 239 157 208 377 242

NR NR NR NR NR NR 181 223 NR 246 357 228

NR NR NR NR NR NR NR NR NR NR NR NR

33 99 66 51 213 133 73 394 230 105 629 361

36 84 61 53 181 121 73 318 205 104 495 312

48 80 NR 70 174 117 94 308 198 131 482 305

NR NR NR 89 160 NR 118 292 186 162 461 292

NR NR NR 112 148 NR 145 275 174 199 441 280

NR NR NR NR NR NR 176 257 NR 236 420 267

NR NR NR NR NR NR NR NR NR 315 376 NR

TABLE J-3

Capacity of Masonry Chimney with Type B Double-Wall

Vent Connectors Serving A Single Category I Appliance

Connector Diameter (D in inches) - To be used with Chimney

areas within size limits at bottom

3" 4" 5" 6"

Height Lateral FAN NAT FAN NAT FAN NAT FAN NAT

H (ft) L (R) Min- Max Max Min- Max Max Min- Max Max Min- Max Max

6 2 NR 28 NR 52 NR 86 NR 130

5 25 _ 49 82 117

10 2 31 61 103 162

5 NR 28* NR 57 NR 96 NR 148

10 25 _ 50* 87 139

15 2 35 _ 67 114 179

5 NR 33* NR 62 NR 107 NR 164

10 28 _ 55* 97 153

15 NR 48* 89* 141

20 2 38" 74 124 201

5 36 _ 68 _ 116 184

10 NR NR NR 60* NR 107 NR 172

15 NR NR 97 159

20 NR NR 83* 148"

30 2 41" 82* 137 216

5 NR 76" 128" 198

10 NR 67* 115" 184"

NR NR NR NR

15 NR NR 107" 171"

20 NR NR 91" 159"

30 NR NR NR NR

50 2 NR 92* 161" 251"

5 NR NR 151" 230*

10 NR NR NR NR NR 138" NR 215"

15 NR NR 128" 199"

20 NR NR NR 185"

30 NR NR NR NR

Minimum Internal

Area of Chimney - 12 19 28 38

Square Inches

MaximumInternal

Area of Chimney - 49 88 137 198

Square Inches

* Possibility of continuous condensation

TABLE J-4

Capacity of Masonry Chimney with Single-Wall

Vent Connectors Serving A Single Category I Appliance

Connector Diameter (D in inches) - To be used with Chimney

areas within size limits at bottom

3" 4" 5" 6"

Height Lateral FAN NAT FAN NAT FAN NAT FAN NAT

H fit) L (R) Min - Max Max Min - Max Max Min - M_x Max Min - M_x Max

6 2 28 52 86 130

NR NR NR NR

5 25' 4 81 116

10 2 31 61 102 161

5 NR 28 NR 56 NR 95 NR 147

10 24* 49: 86 137

15 2 35' 67 113 178

5 32 _ 61 106 163

NR NR NR NR

10 27 54* 96 151

15 NR 46' 87* 138

20 2 38 73 123 200

5 35' 67' 115 183

10 NR NR NR 59' NR 105 NR 170

15 NR NR 95 156

20 NR NR 80* 144"

30 2 41 81 136 215

5 NR 75* 127 196

10 NR 66* 113' 182'

NR NR NR NR

15 NR NR 105' 168

20 NR NR 88* 155'

30 NR NR NR NR

50 2 NR 91 160' 250'

5 NR NR 149' 228

10 NR NR NR NR NR 136_ NR 212'_

15 NR NR 124" 195'

20 NR NR NR 180'

30 NR NR NR NR

Minimum Internal

Area of Chimney - 12 19 28 38

Square Inches

MaximumInternal

Area of Chimney - 49 88 137 198

Square Inches

Possibility of continuous condensation

Page I0 Pub. No. 18-CD19D7-1

INSTALLER 'S GUIDE

Table J-5

Capacity of Single-Wall Metal Pipe or Type B Asbestos Cement

Vents Serving a Single Draft Hood Equipped Appliance

Vent Diameter - D (inches)

Height 3" 4" 5" 6" 7" 8" 10" 12"

"H"

(ft.) Maximum Appliance Input Rating in Thousands of Btu Per Hour

6 7O

8 61

Lateral

(ft.)

101

108

120

116

126

102

138

111

104

15t

122

110

103

163

136

123

115

104

183

148

137

458

113

210

171

159

146

170

14t

128

185

154

14t

131

2O2

168

153

143

130

223

186

170

158

144

132

252

210

192

178

163

149

276

230

210

196

177

163

310

260

234

221

100

185

232

194

177

252

210

194

180

279

233

215

2OO

186

312

26O

24O

223

2O7

195

342

286

264

246

228

214

384

32O

296

274

258

24O

192

443

37O

342

318

292

276

222

312

260

242

340

281

264

250

372

311

289

284

258

420

350

325

308

291

273

470

392

364

345

326

306

529

44t

410

388

366

344

295

590

492

474

456

407

384

330

5OO

415

39O

542

451

43O

4O6

6O6

5O5

48O

455

432

684

57O

540

5t4

488

466

770

641

610

571

550

525

878

730

694

656

625

596

540

980

820

780

730

705

670

605

75O

62O

6OO

815

68O

648

625

912

76O

724

7OO

666

1040

865

825

795

760

726

1190

990

945

910

870

832

1370

1140

1080

1050

1000

960

890

1550

1290

1230

1190

1130

1080

1010

Pub. No. 18-CD19D7-1 Page 11

INSTALLER 'S GUIDE

Notes for Multiple Appliance Vents: (See Tables J-6 to

J-10)

1, The maximum vent connector horizontal length inch of vent-

connector diameter as follows:

Connector Diameter

(Inches) (mm)

Maximum Connector

Horizontal Length

(Feet) (m)

3 (76.2) 4½ (1.37)

4 (102) 6 (1.83)

5 (127) 71½ (2.29)

6 (152) 9 (2.74)

7 (178) 101½ (3.20)

8 (203) 12 (3.65)

9 (229) 131½ (4.11)

10 (254) 15 (4.57)

12 (305) 18 (5.49)

14 (356) 21 (6.40)

16 (406) 24 (7.32)

18 (457) 27 (8.22)

20 (508) 30 (9.14)

22 (559) 33 (10.06)

24 (610) 36 (10.97)

2. The vent connector shall be routed to the vent utilizing the

shortest possible route. Longer connectors than those listed

above are permitted under the following conditions:

(a) The maximum capacity of the vent connector shall not be

reduced more than I0 percent for each additional mul-

tiple of the length listed above. For example, the maxi-

mum length listed above for a 4 inch (120 mm) connector

is 6 feet (1.83 m). With a connector length greater than

12 feet (3.66 mm) but not exceeding 18 feet (5.49 m), the

maximum capacity must be reduced by 20 percent

(0.80 x maximum vent capacity;

(b) The minimum capacity shall be determined by referring

to the corresponding single appliance table (Tables J-1 to

J-2). In this case, for each appliance the entire vent

connector and common vent from the appliance to the

vent termination shall be treated as a single appliance

vent, as if the other appliances were not present.

3. If vent connectors are combined prior to entering the com-

mon vent, the maximum common vent capacity listed in the

common venting tables shall be reduced by 10 percent (0.90

x maximum vent capacity). (See Figure J-9). The length of

the common vent connector manifold (L o) shall not exceed

1½ feet (18 inches) (457 mm) for each inch (25.4 mm) of

common vent connector manifold diameter (D).

4, If the common vertical vent is offset as shown in Figure J-10,

the maximum common vent capacity listed in the common

venting tables shall be reduced by 20 percent (0.80 x maxi-

mum vent capacity), the equivalent of two 90 degree (1.57 rad)

elbows. The horizontal length of the common vent offset

shall not exceed 1½ feet (457 mm) for each inch (25.4 mm) of

common vent diameter.

5. Excluding elbows counted in (4) above, for each additional

elbow in excess of two, the maximum capacity of that portion

of the venting system shall be reduced by 10 percent.

Note: Two 45 degree (0.79 rad) elbows are equivalent to

one 90 degree (1.57 rad) elbow.

6. The common vent diameter shall be at least as large as the

largest vent connector diameter.

Page 12

7. Interconnection fittings must be the same size as the com-

mon vent.

8. Sea-level input ratings shall be used when determining

maximum capacity for high-altitude installation. Actual

input (derated for altitude) shall be used to determine

minimum capacity for high-altitude installation.

9. For multiple units ofgas utilization equipment all located on

one floor, available total height ("H") shall be measured from

the highest draft hood outlet or flue collar up to the level of

the cap or terminal. Connector rise ("R") shall be measured

from the draft hood outlet or flue collar to the level where the

vent gas streams come together. (Not applicable to multi-

story).

10. For multistory installations, available total height ("H")

shall be the vertical distance between the highest draft hood

outlet or flue collar entering that segment and the center

line of the next higher interconnection tee. (See Figure J- 11).

11. The size of the lowest connector and of the vertical vent

leading to the lowest interconnection of the multistory

system shall be in accordance with Table J-1 or J-2 for

available total height ("H") up to the lowest interconnection.

(See Figure J-11).

12. Vertical common vents shall have no offsets when used in

multistory systems.

13. When two or more appliances are connected to a vertical

vent or chimney, the flow area of the largest section of

vertical vent shall not exceed seven times the flow area of the

smallest flue collar area or draft hood outlet area unless

designed in accordance with approved engineering methods.

14. For appliances with more than one input rate, the minimum

vent capacity determined from the tables shall be less than

the lowest appliance input rating and the maximum vent

capacity determined from the tables should be greater than

the highest appliance input rating.

15. Listed corrugated metallic chimney liner systems in ma-

sonry chimneys should be sized by using Tables J-6 or J-7 for

Type B vents with the maximum capacity reduced by

20 percent (0.80 x maximum table capacity) and the mini-

mum capacity as shown in Tables J-6 or J-7. Corrugated

metal venting systems installed with bends or offsets require

additional reduction of the vent maximum capacity. (See

Note 5)

16. The tables included in this part shall be used for chimneys

and vents not exposed to the outdoors below the roof line.

Exterior chimneys or vents exposed to the outdoors below

the roof line may experience eontinuous condensation de-

pending on the locality. Consult local serving gas suppliers,

to the authority havingjurisdietion. A Type B vent or listed

chimney lining system passing through an otherwise un-

used chimney flue shall be considered to be an interior vent

system.

17. Vent connectors shall not be sized upward more than two

size greater than the appliance categorized vent diameter,

flue collar diameter, or draft hood outlet diameter.

18. All combinations of pipe sizes, single-wall, and double-wall

metal pipe shall be allowed within any connector run(s) or

within the common vent provided all of the appropriate

tables permit all of the desired sizes and types, as if they

were used for the entire length of the subject connector or

vent. Ifa single-wall and Type B double-wall metal pipe are

used for vent connectors, the common vent must be sized

Pub. No. 18-CD19D7-1

INSTALLER 'S GUIDE

using Table J-7 or J-9 as appropriate.

19. The draft hood outlet or flue collar of the smallest input

appliance shall be located closest to, or under, the common

vent.

20. When a table permits more than one diameter of pipe to be

used for a connector or vent, all the permitted sizes shall be

permitted to be used.

Note: In general, it is preferable to use the smallest

diameter permitted to minimize heat loss.

21. Interpolation shall be permitted in calculating capacities

for vent dimensions which fall between table entries.

22. Extrapolation beyond the table entries shall not be permit-

ted.

SEE EXAMPLES ON PAGES 20 TO 22.

TYPICAL COMMON VENTING APPLICATIONS

Table J-6 shall be used when Type B vent connectors

are attached to a Type B common vent.

C="=3

'-IF TYPE B N VENT

,17

--IIIL

CONNECTOR

APPLIANCE2

The appliance may be either Category I

Draft Hood equipped or Fan-assisted type.

FIGURE J-5

APPLIANCE1

Note:

Table J-7 should be used when single-wall metal vent

connectors are attached to a Type B common vent.

CONNECTOR

RISE"R2"

APPLIANCE1

Note:

APPLIANCE2

The appliance may be either Category I

Draft Hood equipped or Fan-assisted type.

FIGURE J-6

Table J-8 shall be used when Type B double-wall vent

connectors are attached to a tile lined masonry chimney.

Note: "A" is the

equivalent cross

sectional area

of the Tile Liner

Tile-Lined

MasonryChimney

__L

Note: The appliance may be either Category I

Draft Hood equipped or Fan-assisted type.

FIGURE J-7

Pub. No. 18-CD19D7-1

Table J-9 shall be used when single-wall metal vent

connectors are attached to a tile lined masonry chimney.

Tile-Lined

Note: "A" is the MasenryChimney

equivalent cross

sectional area A

of the Tile Liner

Note: The appliance may be either Category I

Draft Hood equipped or Fan-assisted type.

FIGURE J-8

Page 13

INSTALLER 'S GUIDE

TYPICAL COMMON VENTING APPLICATIONS (Cont.)

EXAMPLE A: Manifold Common Vent Connector

L shall be no greater than eighteen times the common vent

connector manifold inside diameter;

i.e. a 4-inch inside diameter common vent connector mani-

fold shall not exceed 72 inches in length. (See Note 3.)

Lo < 18D

Note: This is an illustration of a typical manifold vent connector. Different appliance, vent connector, or common vent types

are possible. Consult the notes for Common Venting.

FIGURE J-9

EXAMPLE B: Offset Common Vent

Note: This is an illustration of a typical Offset Vent. Different appliance, vent connector, or vent types are possible. Consult

the notes for Single Appliance and Common Venting.

FIGURE J-10

Page 14 Pub. No. 18-CD19D7-1

INSTALLER 'S GUIDE

TYPICAL VENTING APPLICATIONS (Cont.)

Figure J-I 1

Multistory Gas Vent Design Procedure for Each Segment of System

(See Notes: 9, 10, 11, 12 and 13)

Tn Same $;ze

as Se_ent

Above

Multistory Gas Vent Design Procedure for Each

Segment of System

Vent Connector Size Depends on:

* Input

*Rise

* Available Total Height "H"

* Table J-6 Connectors

Common Vent Size Depends on:

* Combined Inputs

* Available Total Height "H"

* Table J-6 Common Vent

* Vertical Common Vent with no Offsets

Pub. No. 18-CD19D7-1 Page 15

INSTALLER 'S GUIDE

TYPICAL VENTING APPLICATIONS (Cont.)

F;gure J-12

Multistory Vent Systems

(See Notes: 9, 10, 11, 12 and 13)

Cop

Pri_€_p|es of Desi_r_ _ Multis_@_f Ve_s U$i_9

Ve_t Co..e©tor a_d C_mm_ Ve_ Des_p_ Tables

Page 16 Pub. No. 18-CD19D7-1

INSTALLER 'S GUIDE

TABLE J-6A

Capacity of Type B Double-Wall Vents with Type B Double-wall Connectors Serving Two or more Category IAppliances

Vent Connector Diameter - D (inches)

8,, I 4,, I 5,, I 6,, I 7,, I 8,, I 9,, I 10,,

Vent Connector Appliance Input Rating in Thousands of Btu Per Hour

Height Rise FAN NAT FAN NAT FAN NAT FAN NAT FAN NAT FAN NAT FAN NAT FAN NAT

H R

(fl) (fi) Min Max Max Min Max Max Min Max Max Min Max Max Min Max Max Min Max Max Min Max Max Min Max Max

6 I 22 37 26 35 66 46 46 106 72 58 164 104 77 225 142 92 296 185 109 376 237 128 466 289

2 23 41 31 37 75 55 48 121 86 60 183 124 79 253 168 95 333 220 112 424 282 131 526 345

3 24 44 35 38 81 62 49 132 96 62 199 139 82 275 189 97 363 248 114 463 317 134 575 386

8 I 22 40 27 35 72 48 49 114 79 64 176 109 84 243 148 100 320 194 118 408 248 138 507 303

2 23 44 32 36 80 57 51 128 90 66 195 129 86 269 175 103 356 230 121 454 294 141 564 358

3 24 47 36 37 87 64 53 139 101 67 210 145 88 290 198 105 384 258 123 492 330 143 612 102

10 I 22 43 28 34 78 50 49 123 78 65 189 113 89 257 154 106 341 200 125 436 257 146 542 314

2 23 47 33 36 86 59 51 136 93 67 206 134 91 282 182 109 374 238 128 479 305 149 596 372

3 24 50 37 37 92 67 52 146 104 69 220 150 94 303 205 111 402 268 131 515 342 152 642 417

15 I 21 50 30 33 89 53 47 142 83 64 220 120 88 298 163 110 389 214 134 493 273 162 609 333

2 22 53 35 35 96 63 49 153 99 66 235 142 91 320 193 112 419 253 137 532 323 165 658 394

3 24 55 40 36 102 71 51 163 111 68 248 160 93 339 218 115 445 286 140 565 365 167 700 444

20 I 21 54 31 33 99 56 46 157 87 62 246 125 86 334 171 107 436 224 131 552 285 158 681 347

2 22 57 37 34 105 66 48 167 104 64 259 149 89 354 202 110 463 265 134 587 339 161 425 414

3 23 60 42 35 110 74 50 176 116 66 271 168 91 371 228 113 486 300 137 618 518 164 764 466

30 I 20 62 33 31 113 59 45 181 93 60 288 134 83 391 182 103 512 238 125 649 305 151 802 372

2 21 64 39 33 118 70 47 190 110 62 299 158 85 408 215 105 535 282 129 679 360 155 840 439

3 22 66 44 34 123 79 48 198 124 64 309 178 88 423 242 108 555 317 132 706 405 158 874 494

50 I 19 71 36 30 133 64 43 216 101 57 349 145 78 477 197 97 627 257 120 797 330 144 984 403

2 21 73 43 32 137 76 45 223 119 59 358 172 81 490 234 100 645 306 123 820 392 148 1014 478

3 22 75 48 33 141 86 46 229 134 61 366 194 83 502 263 103 661 343 126 842 441 151 1043 528

100 I 18 82 37 28 158 66 40 262 104 53 442 150 73 611 204 91 810 266 112 1038 341 135 1285 417

2 19 83 44 30 161 79 42 267 123 55 447 178 75 619 242 94 822 316 115 1054 405 139 1306 494

3 20 84 50 31 163 89 44 272 138 57 452 200 78 627 272 97 834 355 118 1069 455 142 1327 555

TABLE J-6B

Common Vent Capacity

Common Vent Diameter - D

I 5,, I 0 I 7,, I 8,, I 9,, I 10,,

Vent

Height FAN FAN NAT I FAN FAN

(ft) +FAN +NAT +NATI+FAN +NAT

6 92 81 65 140 116

8 101 90 73 155 129

10 110 97 79 169 141

15 125 112 91 195 164

20 136 123 102 215 183

30 152 138 118 244 210

50 167 153 134 279 244

100 185 163 NR 311 277

Combined Appliancetnput Ratingin Thousands of Btu Per Hour

NAT FAN FAN NATIFAN FAN NATIFAN FAN NATIFAN FAN NAT

+NAT +FAN +NAT +NAT +FAN +NAT +NAT +FAN +NAT +NAT +FAN +NAT +NAT

103 204 161 147 309 248 200 404 314 260 547 434 335

114 224 178 163 339 275 223 444 348 290 602 480 378

124 243 194 178 367 299 242 477 377 315 649 522 405

144 283 228 206 427 352 280 556 444 365 753 612 465

160 314 255 229 475 394 310 621 499 405 842 688 523

185 361 297 266 547 459 360 720 585 470 979 808 605

214 421 353 310 641 547 423 854 706 550 1164 977 705

NR 489 421 NR 751 653 479 1025 873 625 1408 1215 800

FAN FAN

+FAN +NAT

672 520

740 577

800 627

924 733

1035 826

1209 975

1451 1188

1784 1502

NAT

+NAT

410

465

495

565

64O

74O

86O

975

TABLE J-7A

Capacity of Type B Double-Wal! Vent with Single-Wal! Connectors Serving Two or more Category IAppliances

Vent Conne_or Diameter - D (inches)

3,, I 4,, I 5,, I 6,, I 7,, I 8,, I 9,, I 10,,

Vent Connector Appliance Input Rating in Thousands of Btu Per Hour

Height Rise FA. .AT FA. .AT FA. .AT .AT .AT .AT FA. .AT FA. .AT

nnnn

H R IIII

(fi) (fl) Min Max Max Min Max Max Min Max Max Min Max Max Min Max Max Min Max Max Min Max Max Min Max Max

6 1 NR NR 26 NR NR 46 NR NR 71 NR NR 102 207 223 140 262 293 183 325 373 234 447 463 286

2 NR NR 31 NR NR 55 NR NR 85 168 182 123 215 251 167 271 331 219 334 422 281 458 524 344

3 NR NR 34 NR NR 62 121 131 95 174 198 138 222 273 188 279 361 247 344 462 316 468 574 385

15 1 NR NR 29 79 87 52 116 138 81 177 214 116 238 291 158 312 380 208 397 482 266 556 596 324

2 NR NR 34 83 94 62 121 150 97 185 230 138 246 314 189 321 411 248 407 522 317 568 646 387

3 NR NR 39 87 100 70 127 160 109 193 243 157 255 333 215 331 438 281 418 557 360 579 690 437

30 1 47 60 31 77 110 57 113 175 89 169 278 129 226 380 175 296 497 230 378 630 294 528 779 358

2 50 62 37 81 115 67 117 185 106 177 290 152 236 397 208 307 521 274 389 662 349 541 819 425

3 54 64 42 85 119 76 122 193 120 185 300 172 244 412 235 316 542 309 400 690 394 555 855 482

50 1 46 69 33 75 128 60 109 207 96 162 336 137 217 460 188 284 604 245 364 768 314 507 951 384

2 49 71 40 79 132 72 114 215 113 170 345 164 226 473 223 294 623 293 376 793 375 520 983 458

3 53 72 45 83 136 82 119 221 128 178 353 186 235 486 252 304 640 331 387 816 424 535 1013 518

Pub. No. 18-CD19D7-1 Page 17

INSTALLER 'S GUIDE

Common Vent Capacity

Vent

HeightH FAN FAN NAT

(if) +FAN +NAT +NAT

6 89 78 64

8 98 87 71

10 106 94 76

15 121 108 88

20 131 118 98

30 145 132 113

50 159 145 128

TABLE J-7B

FAN FAN

+FAN +NAT

136 113

151 126

163 137

189 159

208 177

236 202

268 233

I 6"

Combined ApptiancelnputRatinginThousandsofBtu PerHour

NAT FAN FAN NAT FAN FAN NAT FAN FAN NAT

+NAT +FAN +NAT +NAT +FAN +NAT +NAT +FAN +NAT +NAT

200 158

218 173

237 189

275 221

305 247

250 286

406 337

144

159

174

200

223

257

296

Common Vent Diameter- D

I 7,, 8,, I 9,,

FAN FAN NAT

+FAN +NAT +NAT

304 244 196 398 310 257 541 429 332

331 269 218 436 342 285 592 473 373

357 292 236 467 369 309 638 512 398

416 343 274 544 434 357 738 599 456

463 383 302 606 487 395 824 673 512

533 446 349 703 570 459 958 790 593

622 529 410 833 686 535 1139 954 689

lOO

112

12o

14o

155

179

204

1 O"

FAN FAN NAT

+FAN +NAT +NAT

665 515 407

730 569 460

787 617 487

905 718 553

1013 808 626

1183 952 723

1418 1157 838

Capacity of Masonry Chimney with Type B Double-Wal! Connectors Serving two or more Category IAppliances

TABLE J-SA Vent Connector Capacity

Vent Connector Diameter - D (inches)

3,, I 4,, I 5,, I 8,, I 7,, I 8,, I 9,, I 10,,

Vent Conne_or Appliance Input Rating in Thousands of Btu Per Hour

Height Rise FAN INAT FAN NATI FAN INAT FAN NATI FAN INAT FAN NATI FAN INAT FAN NAT

H R

(fl) (fl) Min Max Max Min Max Max Min Max Max Min Max Max Min Max Max Min Max Max Min Max Max Min Max Max

6 I 24 NR 21 39 62 40 52 106 67 65 194 101 87 274 141 104 370 201 124 479 253 145 599 319

2 26 43 28 41 79 52 53 133 85 67 230 124 89 324 173 107 436 232 127 562 330 148 694 378

3 27 49 34 42 92 61 55 155 97 69 262 143 91 369 203 109 491 270 129 633 349 151 795 439

15 I 24 48 23 38 93 44 54 154 74 72 277 114 100 384 174 125 511 229 153 658 297 184 824 375

2 25 55 31 39 105 55 56 174 89 74 299 134 103 419 192 128 558 263 156 718 339 187 900 432

3 26 59 35 41 115 64 57 189 102 76 319 153 105 448 215 131 597 292 159 760 382 190 960 486

30 I 24 54 25 37 111 48 52 192 82 69 357 127 96 504 187 119 680 255 145 883 337 175 1115 432

2 25 60 32 38 122 58 54 208 95 72 376 145 99 531 209 122 715 287 149 928 378 179 1171 484

3 26 64 36 40 131 66 56 221 107 74 392 163 101 554 233 125 746 317 152 968 418 182 1220 535

50 I 23 52 26 36 116 49 51 209 82 67 405 133 92 582 198 115 798 271 140 1049 362 168 1334 462

2 24 59 31 37 127 58 53 225 96 70 421 152 95 604 222 118 827 304 143 1085 400 172 1379 510

3 26 64 37 39 135 66 55 237 108 72 435 170 98 624 247 121 854 334 147 1118 439 176 1421 558

TABLE J-SB Common Vent Capacity

Vent

Height FAN FAN

(ft) +FAN +NAT

6 NR 74

8 NR 80

10 NR 84

15 NR 90

20 NR 92

30 NR NR

50 NR NR

NAT

+NAT

Minimum Internal Area of Chimney, Square Inches

19 28 38 I 50 63 78

FAN FAN NAT FAN FAN

+FAN +NAT +NAT +FAN +NAT

NR 119 46 NR 178

NR 130 53 NR 193

NR 138 56 NR 207

NR 152 67 NR 233

NR 159 75 NR 250

NR NR NR NR 270

NR NR NR NR NR

Combined Apptiancelnput Ratingin Thousands of Btu Per Hour

NAT FAN FAN NAT FAN FAN NAT

+NAT +FAN +NAT +NAT +FAN +NAT +NAT

71 NR 257 103 NR 351 143

82 NR 279 119 NR 384 163

90 NR 299 131 NR 163 177

106 NR 334 152 NR 177 212

122 NR 368 172 NR 212 243

137 NR 404 198 NR 243 278

NR NR NR NR NR 278 328

FAN FAN NAT FAN FAN

+FAN +NAT +NAT +FAN +NAT

NR 458 188 NR 582

NR 501 218 NR 636

NR 538 236 NR 686

NR 611 283 NR 781

NR 668 325 NR 858

NR 747 381 NR 969

NR 831 461 NR 1089

NAT

+NAT

246

278

302

365

419

496

606

NR 853

NR 937

NR 1010

NR 1156

NR 1286

NR 1473

NR 1692

I 113

FAN FAN NAT

+FAN +NAT +NAT

4O8

454

546

648

749

922

Page 18 Pub. No. 18-CD19D7-1

INSTALLER 'S GUIDE

Capacity of Masonry Chimney with Single-Wal! Connectors Serving two or more Category I Appliances

TABLE J-9A Vent Connector Capacity

Vent Connector

Height Rise

H R

(ft) (ft)

6 1

15 1

30 1

50 1

Vent Connector Diameter - D (inches)

3 I 4 I 5 I 6 I 7 I 8 I 9 I 10

Appliance Input Rating in Thousands of Btu Per Hour

mmmn

FA. "ATI FA. .AT FA. "ATI .AT "ATI .AT FA. "ATI FA. .AT

Min Max Max Min Max Max Min Max Max Min Max Max Min Max Max Min Max Max Min Max Max Min Max Max

NR NR

92 103

96 112

86 108

91 119

95 127

85 113

89 123

94 131

39 NR NR

52 NR NR

61 134 153

43 129 151

54 135 170

63 141 185

47 126 187

57 132 203

65 138 216

48 124 204

57 130 218

65 136 231

66 179 191

84 186 227

97 193 258

73 199 271

88 207 295

101 215 315

80 193 347

93 201 366

105 209 381

80 188 392

94 196 408

106 205 422

100 231 271

123 239 321

142 247 365

112 268 376

132 277 411

151 286 439

124 259 492

142 269 518

160 277 540

130 252 567

149 262 588

167 271 607

140 292 366

172 301 432

202 309 491

171 349 502

189 359 548

213 368 586

183 338 665

205 348 699

229 358 729

194 328 778

218 339 806

243 349 831

200 362 474

231 373 557

269 381 634

225 445 646

256 456 706

289 466 755

250 430 864

282 442 908

312 452 946

265 417 1022

298 429 1058

328 440 1090

252

299

348

291

334

378

330

372

412

355

393

431

499 594

509 696

519 793

623 808

634 884

646 945

600 1089

613 1145

626 1193

582 1302

596 1346

610 1386

283

331

375

360

402

437

455

49O

521

537

567

595

TABLE J-9B Common Vent Capacity

Vent

Height FAN FAN

(ft) +FAN +NAT

6 NR 73

8 NR 79

10 NR 83

15 NR 88

20 NR 90

30 NR NR

50 NR NR

NAT

+NAT

FAN FAN NAT

+FAN +NAT +NAT

NR 118 45

NR 128 52

NR 136 56

NR 149 66

NR 157 74

NR NR NR

FAN FAN

+FAN +NAT

NR 176

NR 190

NR 205

NR 230

NR 247

NR 266

NR NR

Minimum Internal Area of Chimney, Square Inches

I 36 I

Combined Appliance Input Rating in Thousands of Btu Per Hour

NAT FAN FAN NAT FAN FAN NAT

+NAT +FAN +NAT +NAT +FAN +NAT +NAT

71 NR 255 102 NR 348 142

81 NR 276 118 NR 380 162

89 NR 295 129 NR 405 175

105 NR 335 150 NR 460 210

120 NR 362 170 NR 503 240

135 NR 398 195 NR 558 275

NR NR NR NR NR 612 325

63 78

FAN FAN NAT FAN FAN

+FAN +NAT +NAT +FAN +NAT

NR 455 187 NR 579

NR 497 217 NR 633

NR 532 234 NR 680

NR 602 280 NR 772

NR 661 321 NR 849

NR 739 377 NR 957

NR 821 456 NR 1076

NAT

+NAT

245

277

300

360

415

490

600

I 113

FAN FAN NAT

+FAN +NAT +NAT

NR 846 NR

NR 928 405

NR 1000 450

NR 1139 540

NR 1264 640

NR 1447 710

NR 1672 910

Table J-1O

Capacity of a Single-Wall Metal Pipe or Type B Asbestos Cement Vent

Serving Two or More Draft Hood Equipped Appliances

Vent Connector Capacity and Common Vent Capacity are the Exact Same Values

Vent Connector Diameter - D (inches)

Total Vent Connector

Height Rise 3" 4" 5" 6" 7" 8"

"H.... R"

(ft.) (ft.) Maximum Appliance Input Rating in Thousands of Btu Per Hour

6 to 8 1 21 40 68 102 146 205

2 28 53 86 124 178 235

3 34 61 98 147 204 275

15 1 23 44 77 117 179 240

2 30 56 92 134 194 265

3 35 64 102 155 216 298

and up

107

129

145

164

190

211

232

270

295

321

Pub. No. 18-CD19D7-1 Page 19

INSTALLER 'S GUIDE

TABLE J-11

MASONRY CHIMNEY LINEAR DIMENSIONS

WITH CIRCULAR EQUIVALENTS

NOMINAL INSIDE INSIDE DIAMETER EQUIVALENT

LINEAR SIZE DIMENSION IN OR EQUIVALENT AREA

INCHES LINEAR INCHES DIAMETER INCHES SQUARE INCHES

4 X 8 2-1/2 X 6-1/2 4 122

5 19.6

6 28.3

7 38.3

8 X 8 6-3/4 X 6-3/4 7.4 42.7

8 50.3

8 X 12 6-1/2 X 10-1/2 9 63.6

10 78.5

12 X 12 9-3/4 X 9-3/4 10.4 83.3

11 95

12 X 16 9-1/2 X 13-1/2 11.8 107.5

12 113

14 153.9

16 X 16 13-1/4 X 13-1/4 14.5 162.9

15 176.7

16 X 20 13 X 17 16.2 206.1

18 254.4

20 X 20 16-3/4 X 16-3/4 18.2 260.2

20 314.1

20 X 24 16-1/2 X 20-1/2 20.1 3142

22 380.1

24 X 24 20-1/4 X 20-1/4 22.1 380.1

24 452.3

24 X 28 20-1/2 X24-1/4 24.1 4562

28 X 28 24-1/2 X 24-1/4 26.4 543.3

27 572.5

30 X 30 25-1/2 X 25-1/2 27.9 607

30 706.8

30 X 36 25-1/2 X 31-1/2 30.9 749.9

33 855.3

36 X 36 31-1/2 X 31-1/2 34.4 929.4

36 1017.9

When liner sizes differ dimensionally from those shown in this table, equivalent

diameters may be determined from published tables for square and rectangular

ducts of equivalent carrying capacity or by other engineering methods.

EXAMPLES USING SINGLE APPLIANCE

VENTING TABLES

EXAMPLE 1: Single Draft Hood-equipped Appliance

Problem: An installer has a 120,000 Btu/hr input

appliance with a 5-inch diameter draft-

hood outlet that needs to be vented into a

10-foot high Type B vent system.

Question: What size vent should be used assuming:

(a) a 5-foot lateral single-wall metal vent

connector is used with two 90-degree elbows, or

(b) a 5-foot lateral single-wall metal vent

connector is used with three 90-degree elbows in

the vent system?

Solution: Table J-2 should be used to solve this problem

because single-wall metal vent connectors are

being used with a Type B vent.

(a) Read down the first column in Table J-2 until

the row associated with a 10-foot height and 5-foot

lateral is found. Read across this row until a vent

capacity greater than 120,000 Btufar is located in

the shaded columns labelled "NAT Max" for draft

hood-equipped appliances. In this case, a 5-inch

diameter vent has a capacity of 122,000 Btufar

and may be used for this application.

(b) If three 90-degree elbows are used in the vent

system, then the maximum vent capacity listed in

the tables must be reduced by 10 percent (See note

2 for Single Appliance Vents in Exhibit J, Sizing of

EXAMPLE

Problem:

Question:

Solution:

Venting Systems Serving Appliances Equipped

with Draft Hoods, Category I Appliances, and

Appliances Listed for Use with Type B Vents -

Venting Tables, Category I, Central Furnaces).

This implies that the 5-inch diameter vent has an

adjusted capacity of only 110,000 Btu/hr. In this

case, the vent system must be increased to

6 inches in diameter. See calculations below:

122,000 x 0.90 = 110,000 for 5-inch Vent

From Table J-2, Select 6-inch Vent:

186,000 x 0.90 = 167,000; This is greater

than the required 120,000, therefore,

use a 6-inch Vent when three elbows

are used.

2 - SINGLE FAN-ASSISTED APPLIANCE

An installer has an 80,000 Btu/hr input fan-

assisted appliance that must be installed using

10 feet of lateral connector to a 30-Ft high Type B

vent. Two 90 ° elbows are needed for the

installation.

Can a single-wall metal vent connector be used for

this application?

Table J-2 refers to the use of single-wall metal

vent connectors with Type B vent. In the first

column find the row associated with a 30-foot

height and a 10-foot lateral. Read across this row,

looking at the "FAN Min" and "FAN Max"

columns, to find that a 3 inch diameter single-wall

metal connector vent is not recommended.

Moving to the next larger size single-wall

connector (4-inch), we find that a 4-inch diameter

single-wall metal connector has a recommended

minimum vent capacity of 91,000 Btu/hr and a

recommended maximum vent capacity of

144,000 Btu/hr. The 80,000 Btu/hr fan-assisted

appliance is outside this range, so we conclude

that a single-wall metal vent connector cannot be

used to vent this appliance using 10 feet of lateral

for the connector.

However, we see that if the 80,000 Btu/hr input

appliance could be moved to within 5 feet of the

vertical vent, then a 4-inch single-wall metal

connector could be used to vent the appliance.

Table J-2 shows the acceptable range of vent

capacities for a 4-inch vent with 5 feet of lateral to

be between 72,000 Btu/hr and 157,000 Btu/hr.

If the appliance cannot be moved closer to the

vertical vent, then Type B vent could be used as

the connector material. In this case, Table 8

shows that for a 30-Ft vent with 10 feet of lateral,

the acceptable range of capacities for a 4 inch

diameter vent attached to a fan-assisted

appliance is between 37,000 Btu/hr and

150,000 Btu/hr.

Page 20 Pub. No. 18-CD19D7-1

EXAMPLE

Problem:

Question:

3: Interpolating Between Table Values

An installer has an 80,000 Btu/hr input appliance

with a 4-inch diameter draft hood outlet that needs

to be vented into a 12-foot high Type B vent. The

vent connector has a 5-foot lateral length and is

also Type B.

Can this appliance be vented using a 4-inch

diameter vent?

Solution: Table J-1 is used in the case of an all Type B vent

system. However, since there is no entry in Table

J-1 for a height of 12 feet, interpolation must be

used.

Read down the 4-inch diameter "NAT Max" column to the row

associated with 10-foot height and 5-foot lateral to

find the capacity value of 77,000 Btu/hr. Read

down further to the 15-foot height, 5-foot lateral

row to find the capacity value of 87,000 Btu/hr.

The difference between the 15-foot height capacity

value and the 10-foot height capacity value is

10,000 Btu/hr.

The capacity for a vent system with a 12-foot height is equal to

the capacity for a 10-foot height plus 2/5 of the

dif%rence between the 10-foot and 15-foot height

values, or 77,000 + 2/5 x 10,000 - 81,000 Btu/hr.

Therefore, a 4-inch diameter vent may be used in the installa-

tion.

EXAMPLES USING COMMON VENTING TABLES

EXAMPLE

Problem:

Question:

Solution:

4: Common Venting Two Draft Hood-

equipped Appliances

A 35,000 Btu/hr water heater is to be common

vented with a 150,000 Btu/hr furnace, using a

common vent with a total height of 30 feet. The

connector rise is 2 feet for the water heater with a

horizontal length of 4 feet. The connector rise for

the furnace is 3 feet with a horizontal length of

8 feet. Assume single-wall metal connectors will

be used with Type B vent.

What size connectors and combined vent should be

used in this installation?

Table J-7 should be used to size single-wall metal

vent connectors attached to Type B vertical vent.

In the vent connector capacity portion of Table

J-7, find the row associated with a 30-foot vent

height. For a 2-foot rise on the vent connector for

the water heater, read the shaded columns for

draft hood-equipped appliances to find that a 3-inch

diameter connector has a capacity of 37,000 Btu/hr.

Therefore, a 3-inch single-wall metal vent connec-

tor may be used with the water heater.

For a draft hood-equipped furnace with a 3-foot

rise, read across the appropriate row to find that a

5-inch diameter vent connector has a maximum

capacity or 120,000 Btu/hr (-which is too small for

the furnace), and a 6-inch diameter vent connector

has a maximum vent capacity of 172,000 Btu/hr.

Therefore, a 6-inch diameter vent connector should

be used with the 150,000 Btu/hr furnace.

INSTALLER 'S GUIDE

Since both vent connector horizontal lengths are

less than the maximum lengths listed in Note 1,

the table values may be used -without adjustments.

In the common vent capacity portion of Table J-7,

find the row associated with a 30-foot vent height

and read over to the NAT+NAT portion of the

6-inch diameter eolumn to find a maximum-com-

bined capacity of 257,000 Btu/hr. Since the two

appliances total only 185,000 Btu/hr, a 6-inch

common vent may be used.

EXAMPLE

Problem:

5A: CommonVenting a Draft Hood-equipped

Water Heater with a Fan-assisted Furnace

into a Type B Vent

In this case, a 35,000 Btu/hr input draft hood-

equipped water heater with 2 feet of connector rise

and 4 feet of horizontal length is to be common

vented -with a 100,000 Btu/hr fan-assisted furnace

with 3 feet of connector rise and 6 feet of horizontal

length. The common vent consists of a 30-foot rise

of Type B vent. The installer would like to use a

single-wall metal vent connector.

Question: What are the recommended vent diam-

eters for each connector and the common vent?

Solution: -(Table J-7) Water Heater Vent Connector

Diameter - Since the water heater vent connector

horizontal length of 4 feet is less than the maxi-

mum value listed in Note 1, the venting table

values may be used without adjustments. Using

Table J-7 (Vent Connector Capacity), read down

the Total Vent Height "H" column to 30 feet and

read across the 2-foot Connector Rise "R" row to

the first Btu/hr rating in the "NAT Max" column

that is equal to, or greater than, the water heater

input rating. The table shows that a 3-inch vent

connector has a maximum input rating of 37,000

Btu/hr. Since this is greater than the water heater

input rating, a 3-inch vent connector is adequate.

Furthermore, since the water heater is equipped

with a draft hood, there are no minimum input

rating restrictions.

Furnace Vent Connector Diameter - Using Table J-7 (Vent

Connector Capacity), read down the Total Vent

Height "H" column to 30 feet and read across the

3-foot Connector Rise "R" row. Since the furnace

has a fan-assisted combustion system, find the

first "FAN Max" column with a Btu/hr rating

greater than the furnace input rating. The 4-inch

vent connector has a maximum input rating of

119,000 Btu/hr and a minimum input rating of

85,000 Btu/hr. The 100,000 Btu/hr furnace in this

example falls within this range, so a 4-inch connec-

tor is adequate. Since the furnace vent connector

horizontal length of 6 feet is less than the maxi-

mum value listed in Note 1, the venting table

values may be used without adjustment. If the

furnace had an input rating of 80,000 Btu/hr, then

a Type B vent connector (See Table J-6) would be

needed in order to meet the minimum capacity

limit.

Pub. No. 18-CD19D7-1 Page 21

INSTALLER 'S GUIDE

Common Vent Diameter - The total input to the com-

mon vent is 135,000 Btu/hr. Using Table J-7, (Com-

mon Vent Capacity) read down the Total Vent Height

"H" column to 30 feet and across this row to find the

smallest vent diameter in the "FAN+NAT" column

that has a Btu/hr rating equal to, or greater than

135,000 Btu/hr. The 4-inch common vent has a capac-

ity of 132,000 Btu/hr and the 5-inch common vent has

a capacity of 202,000 Btu/hr. Therefore, the 5-inch

common vent should be used in this Example.

Summary - In this Example, the installer may use a

3-inch diameter, single-wall metal vent connector for

the water heater and a 4-inch diameter, single-wall

metal vent connector for the furnace. The common

vent should be a 5-inch diameter Type B vent.

mum input rating of 127,000 Btu/hr and a minimum

input rating of 95,000 Btu/hr. The 100,000 Btu/hr

furnace in this example falls within this range, so a

4-inch connector is adequate.

Masonry Chimney. From Table J-11, the Equivalent

Area for a Nominal Liner size of 8 inches X 12 inches

is 63.6 square inches. Using Table J-9 (Common Vent

Capacity), read down the "Fan+Nat" column under the

Minimum Internal Area of Chimney value of 63, to the

row for 30 foot height, to find a capacity value of

739,000 Btu/hr. The combined input rating of the

furnace and water heater, 135,000 Btu/hr, is less than

the table value, so this is an acceptable installation.

EXAMPLE 5B - Common Venting Into a Masonry

Chimney

Problem:

Question:

In this case, a 35,000 Btu/hr input draft

hood-equipped water heater with 2 feet of

connector rise and 4 feet of horizontal length

is to be common vented with a i00,000 Btu/hr

fan-assisted furnace with 3 feet of connector

rise and 6 feet of horizontal length. The

common vent is a clay tile lined masonry

chimney with a 30 foot height. The internal

dimensions of the clay tile liner are nomi-

nally 8 inches X 12 inches.

Assuming the same vent connector heights,

laterals, and materials found in Example 5A,

what are the recommended vent connector

diameters and is this an acceptable installa-

tion?

Solution: Table J-9 is used to size common venting

installations involving single wall connec-

tors into masonry chimneys.

Water Heater Vent Connector Diameter. Using

Table J-9 (Vent Connector Capacity), read down the

Total Vent Height "H" column to 30 feet and read

across the 2-foot Connector Rise "R" row to the first

Btu/hr rating in the "NAT Max" column that is equal

to or greater than the water heater input rating. The

table shows that a 3 inch vent connector has a maxi-

mum input of only 31,000 Btu/hr, while a 4-inch vent

connector has a maximum input of 57,000 Btu/hr. A

4-inch vent connector must therefore be used.

Furnace Vent Connector Diameter. Using Table J-9

(Vent Connector Capacity), read down the Total Vent

Height "H" column to 30 feet and across the 3-foot

Connector Rise "R" row. Since the furnace has a fan-

assisted combustion system, find the first "FAN Max"

column with a Btu/hr rating greater than the furnace

input rating. The 4-inch vent connector has a maxi-

Page 22 Pub. No. 18-CD19D7-1

ELECTRICAL CONNECTIONS

NOTE: The integrated furnace control is polarity sensi-

tive. The hot leg of the 115 VAC power must be connected

to the BLACK field lead.

Make wiring connections to the unit as indicated on enclosed

wiring diagram. As with all gas appliances using electrical

power, this furnace shall be connected into a permanently live

electric circuit. It is recommended that it be provided with a

separate "circuit protection device" electric circuit. The furnace

must be electrically grounded in accordance with local codes or

in the absence of local codes with the National Electrical Code,

ANSI/NFPA 70 "latest edition", if an external electrical source

is utilized.

Field -wiring diagrams are provided on Page 27. All field

supplied wiring must conform with the temperature limitation

for Type T wire [63 ° F (35 ° C)], -when installed in accordance

with these instructions and wiring diagrams supplied with the

furnace.

Refer to the SERVICE FACTS literature for unit wiring dia-

grams in addition to the diagram inside the blower door.

GAS PIPING

This unit is shipped standard for left side installation of gas

piping, A piping knockout is also provided in the right side for

an alternate piping arrangement. The installation of piping

shall be in accordance with piping codes and the regulations of

the local gas company. Pipe joint compound must be resistant

to the chemical reaction with liquefied petroleum gases.

Refer to piping Table 7, Page 24, for delivery sizes. Connect gas

supply to the unit, using a ground joint union and a manual

shut-off valve as shown in Figure 9. National codes require a

condensation drip leg to be installed ahead of the controls as

shown in Figure 9.

The furnace and its individual shut-off valve must be discon-

nected from the gas supply piping system during any pressure

testing of that system at test pressures in excess of 1/2 psig.

The furnace must be isolated from the gas supply piping by

closing its individual manual shut-offvalve during any pressure

testing of the gas supply piping system at test pressures equal

to or less than 1/2 psig.

NOTE: Maximum pressure to the gas valve for natural gas is

10.5" W.C. Minimum pressure is 5.0" W.C. Maximum pressure

to the gas valve for propane is 13.0" W.C. Minim urn pressure is

11.0" W.C.

All gas fittings m ust be checked fi)r leaks using a soapy solution

before ligh ring the furnace. DO NOT CHECK WITH AN OPEN

FLAME!

INSTALLER 'S GUIDE

LEFT SIDE PIPING (STANDARD)

MANUAL MAIN

SHUTOFF

GROUND

UNION JOINT

DRiP LEG

AUTOMATIC GAS VALVE

WiTH MANUAL SHUTOFF

RIGHT SIDE PIPING (OPTIONAL)

SHUTOFF VALVE

GROUND

UNION JOINT

DRiP LEG

WiTH MANUALSHUTOFF

TOP VIEW OF RIGHT SIDE PIPING

FIGURE 9

Pub. No. 18-CD19D7-1 Page 23

INSTALLER 'S GUIDE

START UP AND ADJUSTMENT

PRELIMINARY INSPECTIONS

With gas and electrical power "OFF"

1. Duct connections are properly sealed

2. Filters are in place

3. Venting is properly assembled

4. Blower door is in place

Turn knob on main gas valve within the unit to the "OFF"

position. Turn the external gas valve to "ON". Purge the air

from the gas lines. After purging, Check all gas connections for

leaks with a soapy solution -- DO NOT CHECK WITH AN

OPEN FLAME. Allow 5 minutes for any gas that might have

escaped to dissipate. LP Gas, being heavier than air, may

require forced ventilation. Turn the knob on the gas valve in

the unit to the "ON" position.

COMBUSTION AND INPUT CHECK

1. Make sure all gas appliances are off except the furnace.

2. Clock the gas meter with the furnace operating (determine

the dial rating of the meter) for one revolution.

3. Match the "Sec" column in the gas flow (in cfh) Table 10 with

the time clocked.

4. Read the "Flow" column opposite the number of seconds

clocked.

5. Use the following factors if necessary:

For 1 Cu. Ft. Dial Gas Flow CFH =

Chart Flow Reading + 2

For 1/2 Cu Ft. Dial Gas Flow CFH =

Chart Flow Reading + 4

For 5 Cu. Ft. Dial Gas Flow CFH =

10X Chart Flow Reading + 4

6. Multiply the final figure by the heating value of the gas

obtained from the utility company and compare to the name-

plate rating. This must not exceed the nameplate rating.

7. Changes can be made by adjusting the manifold pressure or

changing orifices (orifice change may not always be required).

a. Attach a manifold pressure gauge.

b. Remove the slot screw on top of the gas valve for manifold

pressure adjustment.

c. Turn the adjustment nut in to increase the gas flow rate, and

out to decrease the gas flow rate using a 3/32" hex wrench.

d. The final manifold pressure setting shall be no less than 3.5"

W.C. and no more than 4.0" W.C. with an input of no more than

nameplate rating and no less than 93 % of the nameplate rating,

unless the unit is derated for high altitude.

For LP gases, the final manifold pressure (outlet) shall be no less

than 10.5" W.C. and no more than 11.0" W.C. with an input of

no more than the nameplate rating and no less than 93% of the

nameplate rating, unless the unit is derated for altitude.

Table 8 lists the main burner orifices shipped -with the furnace,

Ifa change of orifices is required to correct the input rate, refer

to Table 9.

Table 7

NATURAL GAS ONLY

TABLE OF CUBIC FEET PER HOUR OF GAS

FORVARIOUS PIPE SIZES AND LENGTHS

PIPE LENGTH OF PIPE

SIZE 10 20 30 40 60 60 70

1/2 132 92 73 63 56 50 46

3/4 278 190 152 130 115 105 96

1 520 350 285 245 215 195 180

1-1/4 1050 730 590 520 440 400 370

THIS TABLE tS BASED ON PRESSURE DROP OF 0.3 INCH W.C. AND 0.6 SP.GR. GAS

INPUT

RATING

BTUH

40,000

60,000

80,000

100,000

120,000

Table 8

ORIFICE SIZES

NUMBER

BURNERS

MAIN BURNER ORIFICE

DRILLSIZE

NAT. GAS

LP GAS

Table 9

PART NUMBERS FOR REPLACEMENT ORIFICES

DRILL

SIZE

PART

NUMBER

ORF0384

ORF0499

ORF0387

ORF0386

ORF0488

ORF0500

ORF0385

ORF0497

ORF0517

ORF0408

ORF0502

ORF0501

DRILL

SIZE

PART

NUMBER

ORF0694

ORF0909

ORF0910

ORF0503

ORF0493

ORF0494

ORF0495

ORF0504

ORF0492

ORF0693

ORF0907

ORF0908

HIGH ALTITUDE DERATE

It may be necessary to change burner orifices due to the altitude

of the installation. Ratings of these furnaces are based on sea

level operation and should not be changed at elevations up to

2,000 ft. If the installation is 2,000 ft. or above, refer to National

Fuel Gas Code 8.1.2, and Appendix F, Table F4, for proper

orifice sizing at high altitudes.

Installations above 4,000 feet may require a pressure switch

change. If required, use the BAYHALT*** Kit (High Altitude

Accessory Kit) listed in PRODUCT DATA.

Page 24 Pub. No. 18-CD19D7-1

TABLE 10

GAS FLOW IN CUBIC FEET PER HOUR

2CUBIC FOOT DIAL

Sec. Flow Sec. Flow Sec. Flow Sec. Flow

8 900 29 248 50 144 82 88

9 800 30 240 51 141 84 86

10 720 31 232 52 138 86 84

11 655 32 225 53 136 88 82

12 600 33 218 54 133 90 80

13 555 34 212 55 131 92 78

14 514 35 206 56 129 94 76

15 480 36 200 57 126 96 75

16 450 37 195 58 124 98 73

17 424 38 189 59 122 100 72

18 400 39 185 60 120 104 69

19 379 40 180 62 116 108 67

20 360 41 176 64 112 112 64

21 343 42 172 66 109 116 62

22 327 43 167 68 106 120 60

23 313 44 164 70 103 124 58

24 300 45 160 72 100 128 56

25 288 46 157 74 97 132 54

26 277 47 153 76 95 136 53

27 267 48 150 78 92 140 51

28 257 49 147 80 90 144 50

TABLE 11

Correction Table for Burner Orifice Drill Sizes

for Furnaces Installed at Altitudes 2000 Feet

and More Above Sea Level

Orifice Twist

Drill Size If

Installed At

Sea Level

ALTITUDE ABOVE SEA LEVEL

2000 3000 4000 5000 6000 7000 8000

37 38 38 39 40 41 41

38 39 39 40 41 42 42

39 40 41 41 42 42 43

40 41 42 42 42 43 43

41 42 42 42 43 43 44

42 42 42 43 43 44 44

42 43 43 43 44 44 45

44 44 44 45 45 46 47

45 45 45 46 47 47 48

46 47 47 47 48 48 49

51 51 51 51 52 52 52

51 52 52 52 52 53 53

52 53 53 53 53 53 54

54 54 54 54 54 54 55

54 55 55 55 55 55 56

55 55 55 56 56 55 56

56 56 57 57 57 58 59

58 59 59 60 60 61 62

59 60 60 61 62 62 63

60 61 61 62 62 63 64

61 61 62 63 63 64 64

INSTALLER 'S GUIDE

SEQUENCE OF OPERATION

Thermostat call for heat

R and W thermostat contacts close signaling the control module

to run its self-check routine. After the control module has

verified that the pressure switch contacts are open and the limit

switch(es) contacts are closed, the draft blower will be energized.

As the induced draft blower comes up to speed, the pressure

switch contacts will close and the ignitor warm up period will

begin. The ignitor -will heat for approx. 17 seconds, then the gas

valve is energized to permit gas flow to the burners. The flame

sensor confirms that ignition has been achieved within the

6 second ignition trial period.

After the flame sensor confirms that ignition has been achieved,

the delay to fan ON period begins timing and after approx.

45 seconds the indoor blower motor will be energized and will

continue to run during the heating cycle.

When the thermostat is satisfied, R and W thermostat contacts

open, the gas valve will close, the flames will extinguish, and the

induced draft blower -will be de-energized after a 5 second post

purge. The indoor blower motor will continue to run for the fan

offperiod (Field selectable at 90,120,150" or 210 seconds), then

will be de-energized by the control module.

* = Factory Setting

ON OR OFF POSITION INDICATOR

POSITION MARKERS

ARE STATIONARY

GAS COCK

KNOB TURNS

FIGURE 10

LIGHTING INSTRUCTIONS

WARNING: DO NOT attempt to manually light the burner.

Lighting instructions appear on each unit. Each installation

must be checked out at the time of initial start up to insure

proper operation of all components. Check out should include

putting the unit through one complete cycle as outlined below.

Turn on the main electrical supply and set the thermostat above

the indicated temperature. The ignitor will automatically heat,

then the gas valve is energized to permit the flow of gas to the

burners. After ignition and flame is established, the flame

control module monitors the flame and supplies power to the gas

valve until the thermostat is satisfied.

TO SHUT OFF

For complete shutdown: Turn the gas cock knob on the main gas

valve to the "OFF" position (See Figure 10). Disconnect the

electrical supply to the unit.

CAUTION: If this is done during the cold weather months,

provisions must be taken to prevent freeze-up of al!

water pipes and water receptacles.

Pub. No. 18-CD19D7-1 Page 25

INSTALLER 'S GUIDE

Whenever your house is to be vacant, arrange to have

someone inspect your house for proper temperature.

This is very important in below freezing weather. If for

any reason your furnace should fail to operate damage

could result, such as frozen water pipes.

LIMIT SWITCH CHECK OUT

The limit switch is a safety device designed to close the gas valve

should the furnace become overheated. Since proper operation

of this switch is important to the safety of the unit, it must be

checked out on initial start up by the installer.

To check for proper operation of the limit switches, set the

thermostat to a temperature higher than the indicated tem-

perature to bring on the gas valve. Restrict the airflow by

blocking the return air or by disconnecting the blower. When

the furnace reaches the maximum outlet temperature as shown

on the rating plate, the burners must shut off. If they do not shut

off after a reasonable thne and overheating is evident, a faulty

limit switch is probable and the limit switch must be replaced.

After checking the operation of the limit control, be sure to

remove the paper or cardboard from the return air inlet, or

reconnect the blower.

NOTE TO INSTALLER

Review the following warnings with the owner. Review the

contents of the OWNER'S INFORMATION MANUAL with the

owner.

AIRFLOW ADJUSTMENT

Check inlet and outlet air temperatures to make sure they are

within the ranges specified on the furnace rating nameplate. If

the airflow needs to be increased or decreased, see the wiring

diagram for information on changing the speed of the blower

motor.

WARNING: Disconnect power to the unit before remov-

ing the blower door.

This unit is equipped with a blower door switch which cuts

power to the blower and gas valve causing shutdown when the

door is removed. Operation with the door removed or ajar can

permit the escape of dangerous fumes. All panels must be

securely closed at all times for safe operation of the furnace.

NOTE: Direct drive motors have bearings which are perma-

nently lubricated and under normal use, lubrication is not

recommended.

INDOOR BLOWER TIMING

The control module controls the indoor blower. The blower

starts approximately 45 seconds after ignition. The FAN-OFF

period is approximately 90 seconds from the interruption of gas

flO-W.

ROOM AIR THERMOSTAT HEAT ANTICIPATOR AD-

JUSTMENT

Set the thermostat heat anticipator according to the current

flow measured, or the settings found in the notes on the furnace

wiring diagram, (found inside the furnace casing).

INSTRUCTIONS TO THE OWNERS

In the event that electrical, fuel, or mechanical failures

occur, the owner should immediately turn the gas supply

off at the manual gas valve, located in the burner com-

partment (See Figure 9). Also turn off electrical power to

the furnace and contact the service agency designated

by your dealer.

OPERATING INFORMATION

FLAME ROLL-OUT DEVICE

All models are equipped with a fusible link on the burner cover.

In case of flame roll-out, the link will fail and cause the circuit

to open which shuts off all flow of gas.

ABNORMAL CONDITIONS

1. EXCESSIVE COMBUSTION VENT PRESSURE OR FLUE

BLOCKAGE

If pressure against induced draft blower outlet becomes exces-

sive, the pressure switch will shut off the gas valve until

acceptable combustion pressure is again available.

2. LOSS OF FLAME OR GAS SUPPLY FAILURE

If loss of flame occurs during a heating cycle, when flame is not

present at the sensor, the control module will recycle the

ignition sequence after the sensor cools, then if ignition is not

achieved, it continues to recycle the ignition sequence until

flame is established, the thermostat is satisfied, or power is

interrupted.

3. POWER FAILURE

If there is a power failure during a heating cycle, the system will

restart the ignition sequence automatically when power is

restored, if the thermostat still calls for heat.

4. INDUCED DRAFT BLOWER FAILURE

If pressure is not sensed by the pressure switch, it will not allow

the gas valve to open, therefore the unit will not start. If failure

occurs during a running cycle, the pressure switch will cause the

gas valve to close and shut the unit down.

The following warning complies with State of California taw, Proposition 65.

WARNING: T.isproduct contains

fiberglass wool insulation! Fiberglass dust and ceramic

fibers are believed by the State of California to cause

cancer through inhalation. Glasswool fibers may also

cause respiratory, skin, or eye irritation.

PRECAUTIONARY MEASURES

• Avoid breathing fiberglass dust.

• Use a NtOSH approved dust/mist respirator.

• Avoid contact with the skin or eyes. Wear long-

sleeved, loose-fitting clothing, gloves, and eye

protection.

• Wash clothes separately from other clothing: rinse

washer thoroughly.

Operations such as sawing, blowing, tear-out, and

spraying may generate fiber concentrations requiring

additional respiratory protection. Use the appropriate

NiOSH approved respirator in these situations.

FIRST AID MEASURES

Eye Contact Flush eyes with water to remove dust.

If symptoms persist, seek medical

attention.

Skin Contact -Wash affected areas gently with soap

and warm water after handling.

Page 26 Pub. No. 18-CD19D7-1

INSTALLER 'S GUIDE

FIELD WiRiNG DIAGRAM FOR HEATING ONLY

NOTES

I. BE SURE POWER SUPPLY AGREES WITH EQUIPMENT NAMEPLATEISL

2. LOW VOLTAGE {Z4V.) WIRING TO BE NO. (8 A. W. G. MIN.

3. GROUNDING OF EQUIPMENT MUST COMPLY WITH LOCAL CODES.

4. SET THERMOSTAT HEAT ANTICIPATOR PER UNIT WIRING DIAGRAM.

TO 1(5 VOLT

POWER SUPPLY

SAIL SWITCH HUMIDISTAT

AY28 X119

F'----- _"'5-q _L':-

]LINE VOLTAGE SAIL SWITCH

RED OR # {MOUNTED IN RETURN AIR DUCT)

j L__

_"_'"1 .k, L TO _15 VOLT

IL,_ [POWER SUPPLY

ELECTRONIC AIR

CLEANER (OPTIONAL) .#

POWER

HUMIDIFIER

{OPT IONAL )

NOTE 4

HEATING THERMOSTAT (OR HEATING )

WITH FAN SWITCH THERMOSTAT

[---

INTERG_

CONTROL THERMOSTAT I

.TERMINALS I

GROUNDI !

SC R E W ?_1 BLAC_ _WHITE j.__

- ....

JUNCTIONBOX _ LILH ILN,)

TO 115V., I PH., 60 HZ.,

POWER SUPPLY PER

LOCAL CODES

FURNACE

] ALTERNATE HOOKUP FOR MODEL BEFMO

RED OR /-_ iOL-._R-_R200 ELECTRONIC AIR CLEANER

BLACK _L_ _ .... I_H=_

RELAY KIT I "[.TO I15

WHIT__H.LTEJ L BAYZ4XO433L LN {"POWER

ELECTRONIC AIR

CLEANER IOPTIONALI

VOLT

SUPPLY

INTER-COMPONENT WIRING

.... 24 V. "_ FIELD

LINE V.JWIRING

24. V. "_ FACTORY

_LINE V.JWIRING

From Dwg. 21B340433 Rev. 0

FIELD WIRING DIAGRAM FOR HEATING/COOLING

(OUTDOOR SECTION WITHOUT TRANSFORMER)

NOTES:

1. BE SURE POWER SUPPLY AGREES WITH EQUIPMENT NAMEPLATE(S).

2. LOW VOLTAGE (24V.) WIRING TO BE NO. 18 A.W.G. MIN.

3. GROUNDING OF EQUIPMENT MUST COMPLY WITH LOCAL CODES.

4. SET THERMOSTAT HEAT ANTICIPATOR PER UNIT WIRING DIAGRAM.

5. THE "Y" TERMINAL FROM THE THERMOSTAT MUST BE WIRED TO

THE "Y" TERMINAL OF THE FURNACE CONTROL FOR PROPER

BLOWER OPERATION DURING COOLING.

SAIL SWITCH HUMIDISTAT

AYZ8XII9

li--/--7_ _-_-_-

TO 115 VOLT -- Jl i i POWER

POWER SUPPLY LNEUTRAL p,.__. J_ i i HUMIDIFIER

..... _ _ (OPT IONALI

LINE VOLTAGE SAIL SWITCH

RED OR _ I (MOUNTED IN RETURN AIR DUCT)

TO lib VOLT

ELECTRONIC AIR LJPOWER SUPPLY

CLEANER IOPT IONALI

POWER

SUPPLY

r_._?___ A-NOTE N5

-----I OTE 4

I _ _ _____I El HEATING-COOLING

/ Y_-T .... ;1 THERMOSTAT

IBIIf" .... T -- -- T "L_I

II I_ ----

....... i II I F--

LOW VOLTAGE j _l I I I _

AIR CONDITIONING ii I

OUTDOOR SECTION II i

WITHOUT TRANSFORMER

INTERGRATED FURNACE

CONTROL THERMOSTAT

TERM NKLS,

GROUND [i

SCREW_

FURNACE

BLACK--_ ;!--WHITE

k)JUNCTION

Y BOX

TO ItSV., t PH., 60 HZ.,

POWER SUPPLY PER

LOCAL CODES

i ALTERNATE HOOKUP FOR MODEL BEFI40

RED OR _ [OR 20_0_ ELECTRONIC AIR CLEANER

.... ±"_,

Z_ RELAY KIT II L [TO 1t5

WHITE ILBAY24xO43J_[ N)"POWER

ELECTRONIC AIR

CLEANER (OPTIONALI

VOLT

SUPPLY

INTER-COMPONENT WIRING

24 V. "_ FIELD

----LINE V,.ff WIRING

24 V. "L FACTORY

--LINE v..f" WIRING

From Dwg. 21B330432 Rev. 0

Pub. No. 18-CD19D7-1 Page 27

INSTALLER 'S GUIDE

*UD-C OUTLINE DRAWING

(ALL DIMENSIONS ARE IN INCHES)

4" DIAMETER

1I_'-5/8 '' S FLUE CONNECT

AIR

" 19-5/8" _ ----K

7/8 DIA.HOLE

ELECTRICAL

CONNECTION

I/8 '"

I [/2 DIA. HOLE

GAS CONNECTION

7/8 DIA. K.O.--_

ELECTRICAL \

C_OLN#E##AITO#, _

2lj- \

I t/2 DIA. K.O.

GAS CONNECTIO

1 (ALTERNATE}_

40" 7 --

32" _---

28 - t/4""

1-5/16"

-! BOTTOM

3 - i/4"1

MODEL A B C D

*UD040C924H

*UD040C93OH 14-1/2" 9-5/8" 13-1/4" 13"

*UD06OC924H

*UD060C936H

*UD080C924H

*UD080C936H

*UD080C948H 17-1/2" 9-5/8" 16-1/4" 16"

*UD1O0C936H

*UD1O0C945H

*UD1O0C948H

*UD1O0C960H 21" 13-1/16" 19-3/4" 19-1/2"

*UD120C954H

*UD1O0C961H

*UD120C960H 24-1/2" 15-5/16" 23-1/4" 23"

*UD140C960H

* - First Letter May Be "A" or "T"

N OTES :

I. PREFIX LETTER MAYBE "A" OR "T" DEPENDING

ON BRAND. SUFFIX NUMBER IS "0%

MINIMUM CLEARANCE TO COMBUSTIBLE MATERIALS

UPFLOW CLOSET

LEFT SIDE 0 IN. FRONT 3 IN. (Note 1)

RIGHT SIDE 0 IN. ( + ) BACK 0 IN.

FLUE 6 IN, (#) TOP 1 IN,

HORIZONTAL CLOSET (Note 2)

TOP 2 IN. ( + ) BACK 3 IN.

FLUE 6 IN. (#) SIDES 1 IN,

FRONT 3 IN, (Note 1)

HORIZONTAL ALCOVE (Note 2)

TOP 1 IN. ( + ) BACK 0 IN.

FLUE 6 IN. (#) SIDES 0 IN,

FRONT 18 IN,

# - May be 1"when TYPE B-1 vent pipe is used.

+ - For 14-1/2" cabinets 3" when single watt vent pipe is used.

When the 14-1/2" width models are installedin a horizontal position and asingle wall vent pipe is

used, a 6" clearance must be supplied between the vent pipe and combustible flooring.

Notes: 1) Minimum clearance to front on UD140 models is 6inches.

2) May be installed on combustible floor when Type Bf vent is used.

- FIRST LETTER MAY BE "A" OR "T"

From Dwg. 21C340781 Rev. 1

Page 28

American Standard Inc.

The Trane Company

Trenton, NJ 08619 Pub. No. 18-CD19D7-1

TRANE Furnace/Heater, Gas Manual L0903221

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