Rheem AP13945-2 User Manual

AP13945-2 (08/07)

FOR YOUR SAFETY!

— Do not store or use gasoline or other

flammable vapors or liquids or other combustible materials in the vicinity of this or any other appliance. To do so may result in an explosion or fire.

— WHAT TO DO IF YOU SMELL GAS

● Do not try to light any appliance.

● Do not touch any electrical switch; do not

use any phone in your building.

● Immediately call your gas supplier from a

neighbor’s phone. Follow the gas supplier’s instructions.

● If you cannot reach your gas supplier, call

the fire department.

● Do not return to your home until authorized

by the gas supplier or fire department.

— Improper installation, adjustment,

alteration, service or maintenance can cause property damage, personal injury, or death. Refer to this manual. Installation and service must be performed by a qualified installer, service agency or the gas supplier.

WARNING: If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or death.

The purpose of this manual is twofold: one, to provide the installer with the basic directions and recommendations for the proper installation and adjustment of the water heater; and two, to the owner–operator, to explain the features, operation, safety precautions, maintenance and troubleshooting of the water heater. This manual also includes a parts list.

It is very important that all persons who are expected to install, operate or adjust this water heater read the instructions carefully so they may understand how to perform these operations. If you don’t understand these instructions or any terms within it, seek professional assistance.

Any questions regarding the operation, maintenance, service or warranty of this water heater should be directed to the seller from whom it was purchased. If additional information is required, refer to the section on If You Need Service.

Do not destroy this manual. Please read carefully and keep in a safe place for future reference.

Recognize this symbol as an indication of Important Safety Information!

California Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.

Use & Care Manual

With Installation Instructions for the Installer

Printed in Japan

Tankless Water Heater

Warning: This water heater is not suitable

for use in manufactured (mobile) homes!

Direct Vent Gas - 199,000 Btu Input

31-51904-001

Direct Vent Water Heater

CERTIFIED

Safety Information

Safety Precautions . . . . . . . 3–6

LP Gas Models . . . . . . . . . . . 5

Installation Instructions

Location of Water Heater . 7, 8

Venting . . . . . . . . . . . . . . . 9-15

Water Connections . . . . . 16-18

Gas Supply . . . . . . . . . . . . . . 19

High Altitude . . . . . . . . . . . . 19

Remote Control . . . . . . . 20, 21

Electrical Connection . . . . . . 22

Typical Installation . . . . . . . . 23

Pipe Insulation . . . . . . . . . . . 24

Installation Checklist . . . 24, 25

Operating Instructions

Lighting Instructions . . . . . . 26

Water Temperature. . . . . 27, 28

Care and Cleaning

Maintenance. . . . . . . . . . . . . 29

Housekeeping . . . . . . . . 29, 30

Vent Inspection . . . . . . . . . . . 30

Burner Inspection . . . . . . . . 30

Extended Shut-Down . . . . . . 30

Draining . . . . . . . . . . . . . . . . 31

Freeze Protection . . . . . . . . . 31

Troubleshooting Tips

Before You Call

For Service . . . . . . . . . . 32, 33

Customer Service

Parts List . . . . . . . . . . . . . . . 34

If You Need Service . . . . . . . 36

Inside you will find many helpful hints on how to use and maintain your water heater properly. A little preventive care on your part can save you time and money over the life of your water heater.

You’ll find many answers to common problems in the Troubleshooting Guide. If you review the chart of Troubleshooting Tips first, you may not need to call for service.

READ THIS MANUAL

FOR YOUR RECORDS

Write the model and serial numbers here:

You can find them on a label on the appliance.

Staple sales slip or cancelled check here.

Proof of the original purchase date is needed to obtain service under the warranty.

Your safety and the safety of others are very important. There are many important safety messages in this manual and on your appliance. Always read and obey all safety messages.

This is the safety alert symbol. Recognize this symbol as an indication of Important Safety Information! This symbol alerts you to potential hazards that can kill or hurt you and others.

All safety messages will follow the safety alert symbol and either the word “DANGER”, “WARNING”, “CAUTION” or “NOTICE”.

These words mean:

DANGER

An imminently hazardous situation that will result in death or serious injury.

WARNING

A potentially hazardous situation that could result in death or serious injury and/or damage to property.

CAUTION

A potentially hazardous situation that may result in minor or moderate injury.

Notice:

Attention is called to observe a specified procedure or maintain a specific condition.

READ THE SAFETY INFORMATION

Qualified Installers Only!

Dip Switch Adjustment. . . . 35

Be sure to read and understand the entire Use and Care Manual before attempting to install or operate this water heater. It may save you time and money. Pay particular attention to the Safety Instructions. Failure to follow these warnings could result in serious bodily injury or death. Should you have problems understanding the instructions in this manual, or have any questions, STOP, and get help from a qualified service technician, or the local gas utility.

IMPORTANT SAFETY INFORMATION READ ALL INSTRUCTIONS BEFORE USING.

Failure to install and properly vent the water heater to the outdoors as outlined in the Venting Section of the Installation Instructions in this manual can result in unsafe operation of the water heater. To avoid the risk of fire, explosion, or asphyxiation from carbon monoxide, never operate this water heater unless it is properly vented and has an adequate air supply for proper operation.

Be sure to inspect the vent terminal, vent, and the air intake system on the water heater for proper installation at initial start-up; and at least annually thereafter. Proper operation of the water heater requires air for combustion. Provisions for combustion air must comply with referenced codes and standards. Refer to the Care and Cleaning section of this manual for more information regarding vent and air intake system inspection.

DANGER!

INSTALL AND PROPERLY VENT THE WATER HEATER…

Gasoline, as well as other flammable materials and liquids (adhesives, solvents, paint thinners etc.), and the vapors they produce are extremely dangerous. DO NOT handle, use or store gasoline or other flammable or combustible materials anywhere near or in the vicinity of a water heater or any other appliance. Be sure to read and follow the labels on the water heater, as well as the warnings printed in this manual. Failure to do so can result in property damage, bodily injury or death.

WARNING!

DANGER

FLAMMABLES

Vapors from flammable liquids will explode and catch fire causing death or severe burns.

Do not use or store flammable products such as gasoline, solvents or adhesives in the same room or area near the water heater.

Keep flammable products:

1. far away from heater,

2. in approved containers,

3. tightly closed and

4. out of children's reach.

Installation: Do not install water heater where flammable products will be stored or used unless the main burner flame is at least

Read and follow water heater warnings and instructions. If owners manual is missing, contact the retailer or manufacturer.

Flammable Vapors

Water he ater has a ma in burner flame. The main burner flame:

1. which c an come on at any time and

2. will ignite flammable vapo rs.

Vapo rs:

1. cannot be seen,

2. are heavier than air,

3. go a long way on the floo r and

4. can be carried from other r ooms to the main burner flame by air currents.

18" above the floor. This will reduce, but not eliminate, the risk of vapors being ignited by the main burner flame.

Time/Temperature Relationship in Scalds

Water Temperature Time To Produce a Serious Burn

120°F (49°C) More than 5 minutes

125°F (52°C) 11/2 to 2 minutes

130°F (54°C) About 30 seconds

135°F (57°C) About 10 seconds

140°F (60°C) Less than 5 seconds

145°F (63°C) Less than 3 seconds

150°F (66°C) About 11/2

seconds

155°F (68°C) About 1 second

Table courtesy of Shriners Burn Institute

The chart shown above may be used as a guide in determining the proper water temperature for your home.

DANGER: Households with small children, disabled, or elderly persons may require a 120°F (49°C) or lower temperature setting to prevent contact with “HOT” water.

Maximum water temperature occurs while burner is on. To find water temperature being delivered, turn on a hot water faucet and place a thermometer in the water stream and read the thermometer. (See page 27 & 28 for more details.)

The temperature of the water at the outlet of the water heater can be regulated by setting the temperature on Remote Control. The remote control was set at 100°F (38°C) before it was shipped from the factory.

The Figure to the bottom left illustrates the Remote Control and how to adjust the water temperature.

Notice: The factory setting allows operating temperatures between 100°F (38°C) and 120°F (49°C). Temperatures of up to 140°F (60°C) for Light Duty models and up to 180°F (82°C) for Heavy Duty models can be achieved with the MAIN (UMC-117) remote control and a dip switch adjustment. Only qualified service personnel should perform this adjustment. Only factory authorized remote control(s) should be used.

Notice: When this water heater is supplying general purpose hot water requirements for use by individuals, a thermostatically controlled mixing valve for reducing point of use water temperature is recommended to reduce the risk of scald injury. Contact a licensed plumber or the local plumbing authority for further information.

DANGER!

WATER TEMPERATURE SETTING

Safety and energy conservation are factors to be considered when selecting the water temperature setting of a water heater’s remote control. Water temperatures above 125°F (52°C) can cause severe burns or death from scalding. Be sure to read and follow the warnings outlined on the label pictured below.

IMPORTANT SAFETY INFORMATION READ ALL INSTRUCTIONS BEFORE USING.

Notice: Only heavy duty water heaters can achieve temperatures up to 180°F (82°C).

* Temperatures above 120°F (49°C) can be achieved by adjusting the dip switch. See page 35 for dip switch adjustment.

Notice:

Display shows °F only.

DANGER

HOT

BURN

Water temperature over 125° F can cause severe burns instantly or death from scalds.

Children, disabled and elderly are at highest risk of being scalded.

See instruction manual before setting temperature at water heater.

Feel water before bathing or showering.

Temperature limiting valves are available, see manual.

Higher (Hotter) Lower (Cooler)

100 102 104 106 108 110 112 114 116 118 120* 125 130 135 140 150 160 170 180 °F

38 39 40 41 42 43 44 46 47 48 49* 52 54 57 60 66 71 77 82 °C

PRIORITY

°F

POWER

ON/OFF

Both LP and natural gas have an odorant added to aid in detecting a gas leak. Some people may not physically be able to smell or recognize this odorant. If you are unsure or unfamiliar with the smell of LP or natural gas, ask the gas supplier. Other conditions, such as “odorant fade”, which causes the odorant to diminish in intensity, can also hide or camouflage a gas leak.

DANGER!

NATURAL GAS AND LIQUEFIED PETROLEUM MODELS

● Water heaters utilizing LP gas are

different from natural gas models. A natural gas water heater will not function safely on LP gas and vice versa.

● No attempt should ever be made to

convert the water heater from natural gas to LP gas. To avoid possible equipment damage, personal injury or fire, do not connect the water heater to a fuel type not in accordance with the unit data plate; propane for propane units and natural gas for natural gas units. These units are not certified for any other fuel type.

● LP appliances should not be installed

below grade (for example, in a basement) if such installation is prohibited by federal, state and/or local laws, rules, regulations or customs.

● Propane or LP gas must be used with

great caution. It is heavier than air and will collect first in lower areas making it hard to detect at nose level.

● Before attempting to light the water

heater, make sure to look and smell for gas leaks. Use a soapy solution to check all gas fittings and connections. Bubbling at a connection indicates a leak that must be corrected. When smelling to detect a gas leak, be sure to sniff near the floor also.

● Gas detectors are recommended in LP

and natural gas applications and their installation should be in accordance with the detector manufacturer’s recommendations and/or local laws, rules, regulations or customs.

● It is recommended that more than one

method, such as soapy solution, gas detectors, etc., be used to detect leaks in gas applications.

Notice: If a gas leak is present or suspected:

● Do not attempt to find the cause yourself.

● Do not

try to light any appliance.

● Do not

touch any electrical switch.

● Do not

use any phone in your building.

● Leave the building immediately and

make sure your family and pets leave also.

● Leave the doors open for ventilation and

contact the gas supplier, a qualified service agency or the fire department.

● Stay away from the building until the

service call has been made, the leak is corrected and a qualified agency has determined the area to be safe.

Have the installer show you the location of the gas shut-off valve and how to shut it off if necessary. Turn off the manual shut-off valve if the water heater has been subjected to overheating, fire, flood, physical damage or if the gas supply fails to shut off.

● Read this manual entirely before

installing or operating the water heater.

● Use this appliance only for its intended

purpose as described in this Use and Care Manual.

● Be sure your appliance is properly

installed in accordance with local codes and the provided installation instructions.

● Do not attempt to repair or replace any

part of your water heater unless it is specifically recommended in this manual. All other servicing should be referred to a qualified technician.

SAFETY PRECAUTIONS

IMPORTANT SAFETY INFORMATION READ ALL INSTRUCTIONS BEFORE USING.

WARNING!

For your safety, the information in this manual must be followed to minimize the risk of fire or explosion, electric shock, or to prevent property damage, personal injury, or loss of life.

FOR INSTALLATIONS IN THE STATE OF CALIFORNIA

California Law requires that water heaters must be braced, anchored or strapped to resist falling or horizontal displacement due to earthquake motions. For water heaters up to 52 gallon capacity, a brochure with generic earthquake bracing instructions can be obtained from: Office of the State Architect, 1102 Q Street, Suite 5100, Sacramento, CA 95814 or you may call 916-445-8100 or ask a water heater dealer.

However, applicable local codes shall govern installation. For water heaters of a capacity greater than 52 gallons or tankless-style, consult the local building jurisdiction code for acceptable bracing procedures.

READ AND FOLLOW THIS SAFETY INFORMATION CAREFULLY.

SAVE THESE INSTRUCTIONS

NOTICE: This water heater requires a special venting system. Refer to the instructions in the vent section for proper vent material and method of installation.

Installing the water heater :

This water heater must be installed in accordance with these instructions, local codes, utility company requirements, and/or in the absence of local codes, use the latest edition of the American National Standard/National Fuel Gas Code. A copy can be purchased from either the American Gas Association, 400 North Capitol Street Northwest, Washington, DC 20001 as ANSI standard Z223.1 or National Fire Protection Association, 1 Batterymarch Park, Quincy, MA 02269 as NFPA 54. In Canada, the latest edition of the CSA B149.1 Natural Gas and Propane Installation, and the Canadian Electrical Code, CSA C22.1 Part 1, in the absence of local codes.

Location of Water Heater

The water heater should not be located in an area where leakage of the heat exchanger or connections will result in damage to the area adjacent to it or to lower floors of the structure.

When such areas cannot be avoided it is recommended that a suitable catch pan, adequately drained, must be installed under the water heater.

The pan must not restrict combustion air flow.

A gas fired water heater or any other appliance should not be installed in a space where liquids which give off flammable vapors are to be used or stored. Such liquids include gasoline, but are not limited to, LP gas (butane or propane), paint or adhesives and their thinners, solvents or removers.

Because of natural air movement in a room or other enclosed space, flammable vapors can be carried some distance from where their liquids are being used or stored. The open flame of the water heater’s main burner can ignite these vapors causing an explosion or fire which may result in severe burns, death or property damage.

The water heater must be located so it is not subject to physical damage, for example, by moving vehicles, area flooding, etc.

If the water heater is installed in a garage, it should be installed so that the direct ignition system and main burner are no less than 18 inches (45 cm) above the garage floor.

Raising the gas fired water heater will reduce BUT NOT eliminate the possibility of lighting the vapor of any flammable liquids which may be improperly stored or accidentally spilled.

● The water heater should be installed as

close as practical to the vent termination to minimize vent length and the number of elbows required for venting.

● The water heater should be installed with

the proper venting materials and termination suitable for Category III venting.

● A fire stop plate should be installed at

every penetration of a floor or ceiling if the vent is not running in a fire-rated

shaft.

● Failure to install and properly vent the

water heater to the outdoors as outlined in the Venting Section of this manual can result in unsafe operation.

● Long hot water lines should be insulated to

conserve water and energy.

● The water heater and water lines should

be protected from exposure to freezing temperatures.

● Do not install the water heater in

bathrooms, bedrooms, any occupied rooms normally kept closed, or in outdoor areas.

● Do not install the water heater in small,

poorly ventilated rooms, or in air tight rooms with air-conditioning.

● Do not install water heater where subject

to vibrations.

● Do not install the water heater in

Recreational Vehicles, Mobile Homes, Boats and other Watercrafts.

● Do not install the water heater near vents

for heating or cooling. A minimum of 4 feet (1.2 m) should be maintained.

● Minimum clearance from combustible

and non-combustible construction is 0” around the air intakes pipe, 1/2” (1.3 cm) sides, 0” rear (with support bracket); 12” (30 cm) from the bottom; 12” (30 cm) from the front of the water heater; and 12” (30 cm) from the top, (24” (61 cm) from front and top is recommended for servicing purposes). Refer to Figure on page 8.

● Maintain a minimum clearance of

1” (2.5 cm) between the vent outlet pipe and air intake pipe. Also, maintain a 3” (8 cm) clearance between the vent pipe and combustible or non-combustible construction, unless otherwise specified by vent manufacturer or installed in an enclosed space. If the clearances stated on the Instruction/Warning Label, located on the front panel of the heater differ, install the water heater according to the clearances stated on the label. Refer to Figure on page 8.

WARNING: Combustible construction refers to adjacent walls and ceilings and should not be confused with combustible or flammable products and materials. Combustible and/or flammable products and materials should never be stored in the vicinity of this or any gas appliance.

Installing the water heater:

Corrosive Atmospheres

The air in beauty shops, dry cleaning establishments, photo processing labs, and storage areas for liquid and powdered bleaches or swimming pool chemicals often contain such halogenated hydrocarbons.

An air supply containing halogenated hydrocarbons may be safe to breathe, but when it passes through a gas flame corrosive elements are released that

will shorten the life of any gas burning appliance.

Propellants from common spray cans or gas leaks from A/C and refrigeration equipment are highly corrosive after passing through a flame.

The water heater warranty is voided when failure of the heater is due to operation in a corrosive atmosphere.

NOTICE: The water heater should not be installed near an air supply containing halogenated hydrocarbons.

Inspect Shipment

Inspect the water heater for possible damage. Check the markings on the rating plate of the water heater to be certain the type of gas supplied corresponds to the water heater requirements. Verify all included parts are present (see below).

Minimum Clearance from

Combustible and Non-

Combustible Construction.

WARNING: Follow vent manufacturers instruction while installing vent. If required, provide additional clearances from vent to combustibles per vent manufacturers instruction.

Location of Water Heater continued:

min. 1/2 "

(1.3 cm)

min. 3"

(8 cm)

min. 12"

(30 cm)

(24" (60 cm) minimum is recommended for service)

min. 1/2 "

(1.3 cm)

Use & Care Manual

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Drain Tubing

Remote Control

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Washer x 4 pcs.

With Installation Instructions for the Installer

Residential Gas

Tankless

Water Heaters

Warning: This waterheateris not suitable for

use in manufactured (mobile) homes!

The purpose of this manual is twofold: one, to provide the installerwith the basic directions and recommendations forthe properinstallation and adjustment of the waterheater; and two, to the owner–operator, to explain the features, operation, safety precautions, maintenance and troubleshooting of the waterheater. This manual also includes a parts list.

It is imperative that all persons who are expected to install, operate or adjust this waterheaterread the instructions carefully so they may understand how to perform these operations. If you don’t understand these instructions orany terms within it, seek professional advice.

Any questions regarding the operation, maintenance, service or warranty of this waterheatershould be directed to the sellerfrom whom it was purchased. If additional information is required, referto the section on How to Obtain Service Assistance.

Do not destroy this manual. Please read carefully and keep in a safe place forfuture reference.

Recognize this symbol as an indication of Important Safety

Information!

California Proposition 65 Warning:This product contains

chemicals known to the State of California to cause cancer, birth defects orotherreproductive harm.

WARNING: If the information in these instructions is not followed exactly,

a fire orexplosion may result causing property damage, personal injury ordeath.

FOR YOUR SAFETY!

● If you cannot reach yourgas supplier, call

—Do not store or use gasoline or other

the fire department. flammable vapors or liquids or other combustible materials in the vicinity of this or

● Do not return to yourhome until authorized

any otherappliance. To do so may result in an

by the gas supplierorfire department. explosion orfire.

— Improperinstallation, adjustment,

alteration, service ormaintenance can cause

—WHATTO DO IFYOU SMELL GAS

property damage, personal injury, ordeath .

●Do not try to light any appliance.

Referto this manual. Installation and service

● Do not touch any electrical switch; do not

must be performed by a qualified installer,

use any phone in yourbuilding.

service agency orthe gas supplier.

● Immediately call yourgas supplierfrom a

neighbor’s phone. Follow the gas supplier’s instructions.

Printed in USA

Tankless Unit

Use & Care Manual

Manual Appliance

Gas Shut-off Valve

Venting

The installation of venting must comply with national codes, local codes, and the vent manufacturer’s instructions.

The water heater must be vented to the outdoors as described in these instructions. DO NOT connect this water heater to a Chimney. It must be vented separately from all other appliances.

All vent components (adapters, pipe, elbows, terminals, etc.) should be UL1738 Certified Stainless Steel Venting Material (e.g. AL29-4C).

Use a vent pipe with an anti-disconnection joints.

The use of a High Temperature Silicone (500°F) (260°C) may be required to seal vent connections. To prevent accidental gas exhaust leakage, apply a 1/4” (6 mm) wide bead approximately 1/4” (6 mm) from the end and another bead against the joint side of the stop bead.

Follow vent manufacturer’s installation instructions and their recommended clearances to combustibles.

The unit can be vented either horizontally or vertically.

Vent pipe runs must be adequately supported along both horizontal and vertical runs.

The maximum recommended unsupported span should be no more than five (5) feet (1.5 m) Support isolation hanging bands

should be used. DO NOT use wire. (See Figure below).

Notes on pre-existing vent:

If the water heater is being installed as a replacement for an existing water heater, a thorough inspection of the existing venting and air intake system must be performed prior to any installation work. Verify that the correct materials, vent lengths and terminal locations as detailed in this Use and Care manual have been met. Carefully inspect the entire venting and air intake system for any signs of cracks or fractures, particularly at the joints between elbows or other fittings and the straight runs of vent pipe. Check the system for signs of sagging or other stresses in the joints as a result of misalignment of any components in the system. If any of these conditions are found, they must be corrected in accordance with the venting instructions in this manual before completing the installation and putting the water heater into service.

Additional installation information for The Commonwealth of Massachusetts is located on the back page of this manual.

DANGER: Failure to install the appliance vent adapter and properly vent the water heater to the outdoors as outlined in the Venting section of this manual will result in unsafe operation of the water heater causing death, serious injury, explosion, or fire. To avoid the risk of fire, explosion, or asphyxiation from carbon monoxide, NEVER operate the water heater unless it is properly vented and has adequate air supply for proper operation as outlined in the Venting section of this manual.

Notice: Use a 4” Diameter UL approved Category III Stainless Steel vent material only. No other vent material is permitted.

WARNING: Refer to page 7 & 8 for clearances to combustible material.

Venting Lengths

MAXIMUM VENT LENGTH - The

system will not operate if there is excessive restriction (pressure drop) in the venting system. A maximum of 47 feet 6 inches (14.4 m)

of vent pipe may be used provided there is only one 90° elbow in the system. If additional elbows are required: two elbows can be used with 42 feet 6 inches

(13 m)

, and three elbows can be used with 37 feet 6 inches

(11.4 m)

of vent pipe.

A 90° elbow is equivalent to 5 feet

(1.5 m) of straight pipe. A 45° elbow is equivalent to 2 feet 6 inches

(76 cm)

of straight pipe.

The vent should be installed with a slight downward slope of 1/4” per foot of horizontal run toward the vent terminal (see Figure on page 8). This ensures that any condensate formed during operation of the unit is evacuated from the appliance.

MINIMUM VENT LENGTH - The vent length may be as short as one 90° elbow, one vent adapter, and a Rheem approved vent termination kit that is installed to the outdoors through a sidewall.

Number of

90° elbows

(bends)

Maximum

Length of

Straight Pipe

47’ 6”

(14.4 m)

42’ 6”

(13 m)

37’ 6”

(11.4 m)

NO! YES!

Venting Through Closed Spaces

If the vent piping passes through a closed space, a minimum clearance of 8” (20 cm) when installed horizontally, 6”

(15 cm) when installed vertically should be maintained between the vent pipe and combustibles and noncombustibles. Be sure to follow local codes and vent manufacturers installation instructions.

For maintenance and inspection purposes, the following access panels are required.

● Two (2) inspection access panels large enough to allow

access for venting inspection. One (1) of these access panels should be close to where the vent pipe enters the ceiling. The other access panel should be near the vent termination.

● A ventilation access panel with a 16 in2(103 cm2) opening

should be provided every 10 ft (3 m).

The following information should be used for determining the proper location of the vent terminal for direct vent tankless water heaters.

VVEENNTT TTEERRMMIINNAALL

AAIIRR SSUUPPPPLLYY IINNLLEETT

AARREEAA WWHHEERREE TTEERRMMIINNAALL IISS NNOOTT PPEERRMMIITTTTEEDD

Horizontal Vent Terminal Location

CCaannaaddiiaann IInnssttaallllaattiioonnss

UUSS IInnssttaallllaattiioonnss

1 In accordance with current CAN/CGA-B149 Installation Codes. 2 In accordance with current ANSI Z223.1/ NFPA 54 National Fuel Gas Code.

+ A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and

serves both dwellings. * If clearances are not specified then follow local installation codes and the requirement of the gas supplier. ** For condensing appliances: The vent for this appliance shall not terminate over public walkways, near soffit vents, crawl space vents, of other areas where condensate or vapor could create a nuisance, hazard, or cause property damage. Where condensate or vapor could cause damage or could be detrimental to the operation of regulators, relief valves, or other equipment.

H = Clearance to each side of center line

extended meter/regulator assembly. above

3 feet (91 cm) within a height 15 feet (4.57 m) above the meter/regulator assembly.

I = Clearance to service regulator vent

outlet.

3 feet (91 cm)

J = Clearance to nonmechanical air

supply inlet to the combustion air inlet to any building or other appliance.

6 inches (15 cm) for appliances < 10,000 Btuh (3 kW), 12 inches (30 cm) for appliances > 10,000 Btuh (3kW) and <

100,000 Btuh (30kW), 36 inches (91 cm) for appliances > 100,000 Btuh (30kW).

6 inches (15 cm) for appliances <

10,000 Btuh (3 kW), 9 inches (23 cm) for appliances > 10,000 Btuh (3 kW) and < 50,000 Btuh (15 kW), 12 inches (30 cm) for appliances > 50,000 Btuh (15 kW).

K = Clearance to mechanical air supply

inlet.

6 feet (1.83 m) 3 feet (91 cm) above if within 10 feet

(3 m) horizontally.

L = Clearance above paved side walk or

paved driveway located on public property.

Not allowed Not allowed

M = Clearance under veranda, porch,

deck or balcony.

Not allowed Not allowed

A= Clearance above grade, veranda,

porch, deck or balcony.

12 inches (30 cm) above anticipated

snow level.

12 inches (30 cm) above anticipated

snow level.

B= Clearance to window or door that

may be opened.

6 inches (15 cm) for appliances <

10,000 Btuh (3 kW), 12 inches (30 cm) for appliances > 10,000 Btuh (3kW) and < 100,000 Btuh (30kW), 36 inches (91 cm) for appliances > 100,000 Btuh (30kW).

6 inches (15 cm) for appliances <

10,000 Btuh (3 kW), 9 inches (23 cm) for appliances > 10,000 Btuh (3 kW) and < 50,000 Btuh (15 kW), 12 inches (30 cm) for appliances > 50,000 Btuh (15 kW).

C= Clearance to permanently closed

window.

* *

D= Vertical Clearance to ventilated soffit

located above the terminal within a horizontal distance of 2 feet (61 cm) from the center line of the terminal.

* *

E= Clearance to unventilated soffit.

* *

F= Clearance to outside corner.

* *

G= Clearance to inside corner.

* *

CLOSED

FIXE

CLO

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