Richmond 6GR50SPVE2-36 50 Gal. Short 6 Year 36,000 BTU Natural Gas Power Vent Tank Water Heater Use & Care Manual
Below you will find brief information for Rheem PowerVent Water Heaters. This manual provides comprehensive instructions for installation, operation, safety precautions, maintenance, and troubleshooting for Rheem residential gas water heaters. It covers topics such as lighting instructions, water temperature adjustment, draining procedures, and vent system inspection. Safety information is emphasized throughout, highlighting precautions to prevent fire, explosion, or scalding.
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WARNING:
This water heater is not suitable for use in manufactured (mobile) homes!
Use & Care Manual
With Installation Instructions for the Installer
Residential Gas - FVIR Certified
®
Water Heaters
Model on Right Shown With
Factory Installed Optional Digital Display
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, for 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 do not 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.
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Recognize this symbol as an indication of Important Safety Information!
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California Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.
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—
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WARNING: If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or death.
FOR YOUR SAFETY!
Do not store or use gasoline or other flammable vapours 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.
AP15761-3 (03/17)
2
Safety Information
Safety Precautions . . . . . . . 3–6
LP Gas Models . . . . . . . . . . . 5
Installation Instructions
Location . . . . . . . . . . . . . . . . . 7
Water Supply Connections . . 9
Gas Supply . . . . . . . . . . . . . . 11
Venting . . . . . . . . . . . . . . .12-19
Wiring Diagram . . . . . . . .20-21
Pipe Insulation . . . . . . . . . . . .22
Install User Display . . . . .23-24
User Display Operation . .25-27
Heat Traps . . . . . . . . . . . . . . .28
Installation Checklist . . . . . . .29
Potable/Space Heating . . . . 30
Operating Instructions
Lighting Instructions . . . . . . 31
Water Temperature . . . . .32-33
Care and Cleaning
Draining . . . . . . . . . . . . . . . . 35
Maintenance . . . . . . . . . . . . . 35
Vent System Inspection . . . . 36
Burner Inspection . . . . . . . . 36
Extended Shut-Down . . . . . .37
Troubleshooting Tips
Before You Call
For Service . . . . . . . . . . . 38-40
Customer Service
Parts List . . . . . . . . . . . . . . . . 41
If You Need Service . . . . . . .44
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.
READ THIS MANUAL
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 THE SAFETY INFORMATION
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.
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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:
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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
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.
NOTICE: This water heater is equipped with a flammable vapour sensor that will automatically shut down the water heater in the presence of gasoline vapours and some other flammable vapours.
If the flammable vapour sensor shuts down the water heater, contact a qualified service technician.
Clear any hazardous materials and ventilate the area around the water heater. DO NOT turn off the appliance or adjust the ON/OFF switch in any way. DO NOT tamper with the flammable vapour sensor. DO NOT submerse the flammable vapour sensor in water. DO NOT allow the flammable vapour sensor to come into contact with any substances such as bleach or cleaners. See the “Gas Valve
LED Error Code” Section of this manual for a list of error codes.
DANGER!
INSTALL THE BLOWER ASSEMBLY AND PROPERLY VENT
THE WATER HEATER
Failure to install the blower assembly 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 system for proper installation at initial start-up; and at least annually thereafter. Refer to the Care and
Cleaning section of this manual for more information regarding vent system inspection.
WARNING!
Gasoline, as well as other flammable materials and liquids (which include but are not limited to adhesives, solvents, paint thinners etc.), and the vapours 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 warning label pictured below and other 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.
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W A R N I N G
FLAMMABLES Flammable Vapors
FIRE AND EXPLOSION HAZARD
Can result in serious injury or death.
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Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. Storage of or use of gasoline or other flammable vapors or liquids in the vicinity of this or any other appliance can result in serious injury or death.
3
!
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DANGER!
WATER TEMPERATURE SETTING
Safety and energy conservation are factors to be considered when selecting the water temperature setting of a water heater’s gas control. Water temperatures above 125°F can cause severe burns or death from scalding. Be sure to read and follow the warnings outlined on the label pictured below. This label is also located on the water heater.
Time/Temperature Relationship in Scalds
D A N G E R
Water Temperature Time To Produce a Serious Burn
120°F
125°F
130°F
135°F
140°F
145°F
150°F
155°F
More than 5 minutes
1 1 /
2
to 2 minutes
About 30 seconds
About 10 seconds
Less than 5 seconds
Less than 3 seconds
About 1 1 /
2
seconds
About 1 second
Table courtesy of Shriners Burn Institute
The chart shown above may be used as a guide in
HOT
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DANGER: Households with small children, disabled, or elderly persons may require a 120°F or lower gas control (thermostat) setting to prevent contact with “HOT” water.
BURN
Water temperature over 125 °
can cause severe burns
F
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.
4
Notice: Mixing valves are recommended for reducing point of use water temperature by mixing hot and cold water in branch water lines. It is recommended that a mixing valve complying with the Standard for
Temperature Actuated Mixing Valves for Hot Water
Distribution Systems, ASSE 1017 be installed. See pages 30 & 32 for more details and contact a licensed plumber or the local plumbing authority for further information.
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DANGER: Hotter water increases the potential for Hot
Water SCALDS.
Valve Set
Point
LOW
●
●
●
HOT
A
B
C
VERY HOT 160°F
Estimated
Temperature
90°F
98°F
105°F
113°F
120°F
130°F
140°F
150°F
Burns on Adult Skin
------------------------
------------------------
------------------------
------------------------
More than 5 minutes
About 30 seconds
Less than 5 seconds
About 1-1/2 seconds
About 1/2 second
DANGER!
LIQUEFIED PETROLEUM (LP PROPANE OR BUTANE)
AND NATURAL GAS MODELS
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.
● 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.
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DANGER: If a gas leak is present or suspected:
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DO NOT attempt to find the cause yourself.
● 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. LP for LP units. Natural gas for natural gas units. These units are not certified for any other fuel type.
● DO NOT try to light any appliance.
●
DO NOT touch any electrical switch.
●
DO NOT use any phone in your building.
● Leave the house 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.
● 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.
● Stay away from the house (or building) until the service call has been made, the leak is corrected and a qualified agency has determined the area to be safe.
●
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
& 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.
5
6
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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 residential water heaters must be braced, anchored or strapped to resist falling or horizontal displacement due to earthquake motions. For residential 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 residential water heaters of a capacity greater than 52 gallons, consult the local building jurisdiction for acceptable bracing procedures.
SAFETY PRECAUTIONS
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.
READ AND FOLLOW THIS SAFETY INFORMATION
CAREFULLY.
SAVE THESE INSTRUCTIONS
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 N. Capitol Street NW, Washington, DC 20001 as ANSI standard Z223.1 or National Fire Protection
Association, 1 Batterymarch Park, Quincy, MA 02269 as booklet NFPA 54.
Combustion Air Inlet
Openings
Location
Max.
2.75
” in an area where leakage from the tank or connections will result in damage to the area adjacent to the heater or to lower floors of the structure.
● We recommend this water heater be temperatures DO NOT exceed 100°F
Flammable
Vapour
Sensor
Diameter of water heater plus 2” min.
The auxiliary drain pan installation MUST conform to local codes.
NOTICE: DO NOT allow the drain pan to obstruct the flammable vapour sensor.
NOTICE: DO NOT allow the flammable vapour sensor to become submerged in water. Make sure the catch pan is properly drained.
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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.
When such areas cannot be avoided it is recommended that a suitable drain pan, adequately drained, must be installed under the water heater.
The water heater must be centered in the drain pan.
The drain pan must not restrict air flow to the combustion air inlet openings
(perforation openings) located around the lower perimeter of the water heater.
Drain pan kits are available from the store where the water heater was purchased, or any water heater distributor.
Make certain the floor underneath the water heater is strong enough to sufficiently support the weight of the water heater once it is filled with water.
A gas fired water heater or any other appliance should not be installed in a space where liquids which give off flammable vapours are to be used or stored. Such liquids include gasoline,
LP gas (butane or propane), paint or adhesives and their thinners, solvents or removers.
DO NOT block or obstruct any of the combustion air inlet openings located around the perimeter of the water heater. A minimum of 1 in. is required between these combustion air inlet openings and any obstruction.
DO NOT obstruct or block the
Flammable Vapour Sensor.
Because of natural air movement in a room or other enclosed space, flammable vapours can be carried some distance from where liquids which give off flammable vapours are to be used or stored. The open flame of the water heater’s pilot or main burner can ignite these vapours and create a shut down condition of the water heater which will not allow the water heater
Service Technician.
installed on a residential garage floor without the use of an 18 in. stand in accordance with the National Fuel Gas
Code, NFPA 54, ANSI Z223.1 2006, unless otherwise directed by State and
Local code requirements. The water heater must be located so it is not subject to vehicles, area flooding etc.
water heater in a location where it may exceeding 125°F (52°C).
● The water heater should be installed connection fittings required. (Refer to the “INSTALLATION” Section of this manual.)
● Long hot water lines should be insulated to conserve water and energy.
● The water heater and water lines should temperatures.
● DO NOT install the water heater in
● Minimum clearance from combustible
Front Sides Rear Top
3”
(7.6 cm)
1”
(2.5 cm)
0”
(0 cm)
12”
(30.5 cm)
* "Front" clearance dimension is
(thermostat) to the closet door.
measured from the jacket top to the ceiling.
If the clearances stated on the Instruction/
Warning Label, located on the front of the heater differ, install the water heater label.
● If the water heater is installed in an minimum of 24 in. clearance from the adequate inspection and servicing.
● The water heater may be installed on installed on carpeting, place a metal or wood panel beneath the water heater, extending beyond its full width and depth at least 3 in. in all directions.
NOTICE: For proper operation and maintenance, a minimum clearance of
1.5 inches must be provided from the relief valve to any wall or object.
7
8
Installing the water heater
Inspect Shipment
Inspect the water heater for possible damage. Check the markings on the rating plate of the water heater to be certain the
NOTICE: The water heater should not be installed near an air supply containing halogenated hydrocarbons.
type of gas supplied corresponds to the water heater requirements.
Combustion and Ventilation Air
Proper operation of the water heater requires air for combustion and ventilation. Provisions for combustion and ventilation air must comply with referenced codes and standards.
DO NOT block or obstruct any of the combustion air inlet openings located around the perimeter of the water heater. A minimum of 1 in. is required between these combustion air inlet openings and any obstruction.
NOTICE: If the water heater is installed in an unconfined space within a building of conventional frame, masonry or metal construction, infiltration air is normally adequate for proper combustion and ventilation. If the water heater is installed in a confined space, provisions for combustion and ventilation air must be made.
DO NOT obstruct or block the Flammable
Vapour Sensor.
A confined space is one having a volume of less than 50 cubic feet per 1000 Btu/h of the aggregate input of all appliances within that space.
The air must be supplied through two permanent openings of equal area. One is to be located within 12 in. above the floor and the other is to be located within 12 in. from the ceiling.
The minimum net free area of each opening must not be less than one square inch per 1000 Btu/h of the total input rating of all the appliances in the enclosure
(but not less than 100 square inches), if each opening communicates with other unconfined areas inside the building.
Buildings of unusually tight construction shall have the combustion and ventilation air supplied from outdoors, or a freely ventilated attic or crawl space.
If air is supplied from outdoors, directly or through vertical ducts, there must be two openings located as specified above and each must have a minimum net free area of not less than one square inch per 4000
Btu/h of the total input rating of all the appliances in the enclosure.
If horizontal ducts are used to communicate with the outdoors, each opening must have a minimum net free area of not less than one square inch per
2000 Btu/h of the total input rating of all the appliances in the enclosure. If ducts are used, the minimum dimensions of rectangular air ducts shall not be less than
3 in.
NOTICE: If the duct openings which supply combustion and ventilation air are to be covered with a protective screen or grill, the net free area
(openings in the material) of the covering material must be used in determining the size of the openings.
Protective screening for the openings
MUST NOT be smaller than 1/4 in.mesh to prevent clogging by lint or other debris.
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.
IMPORTANT: DO NOT apply heat to the HOT or
COLD water connections. If sweat connections are used, sweat tubing to adapter before fitting adapter to the cold water connections on heater. Any heat applied to the cold water supply fittings will permanently damage the dip tube and heat traps.
NOTICE: The National
Fuel Gas Code (NFGC) mandates a manual gas shut-off valve: See
(NFGC) for complete instructions. Local codes or plumbing authority requirements may vary from the instructions or diagrams provided and take precedent over these instructions.
Thermal Expansion
Determine if a check valve exists in the inlet water line. Check with your local water utility company.
It may have been installed in the cold water line as a separate back flow preventer, or it may be part of a pressure reducing valve, water meter or water softener. A check valve located in the cold water inlet line can cause what is referred to as a “closed water system” . A cold water inlet line with no check valve or back flow prevention device is referred to as an
“open” water system.
As water is heated, it expands in volume and creates an increase in the pressure within the water system. This action is referred to as “thermal expansion” . In an “open” water system, expanding water which exceeds the capacity of the water heater flows back into the city main where the pressure is easily dissipated.
A “closed water system” , however, prevents the expanding water from flowing back into the main supply line, and the result of “thermal expansion” can create a rapid and dangerous pressure increase in the water heater and system piping. This rapid pressure increase can quickly reach the safety setting of the relief valve, causing it to operate during each heating cycle. Thermal expansion, and the resulting rapid, and repeated expansion and contraction of components in the water heater and piping system can cause premature failure of the relief valve, and possibly the heater itself. Replacing the relief valve will not correct the problem!
The suggested method of controlling thermal expansion is to install an expansion tank in the cold water line between the water heater and the check valve (see illustration below). The expansion tank is designed with an air cushion built in that compresses as the system pressure increases, thereby relieving the over pressure condition and eliminating the repeated operation of the relief valve. Other methods of controlling thermal expansion are also available.
Contact your installing contractor, water supplier or plumbing inspector for additional information regarding this subject.
Water Supply Connections
Refer to the illustration below for suggested typical installation. The installation of unions or flexible copper connectors is recommended on the hot and cold water connections so that the water heater may be easily disconnected
Typical Installation
for servicing if necessary. The HOT and
COLD water connections are clearly marked and are 3/4in. NPT on all models.
Install a shut-off valve in the cold water line near the water heater.
Vent connector
Union
1/4” per foot maximum slope up or down for horizontal venting.
Hot water outlet to fixtures
Heat trap
6” minimum Anode
Blower assembly
Transformer Box
(Remote Control Models Only)
Water Heater Jacket
Temperature and pressure relief valve
Remote Control
(Factory Installed Option)
Manual gas shut-off
To gas supply
Ground joint union
Shut-off valve
Union
Heat trap
6” minimum
To cold water supply
Sediment trap
Thermostatic gas valve
Cap
Thermal expansion tank (if required)
Drain valve
Shut-off valve
Relief valve discharge line to suitable open drain.
Jacket door
Flammable Vapour Sensor
Auxiliary catch pan 6” Air gap
Combustion Air
Inlet Openings
Drain Pan Pipe to suitable drain.
9
Installing the water heater
A new combination temperature and pressure relief valve, complying with the Standard for Relief
Valves for Hot Water Supply Systems, ANSI Z21.22/CSA 4.4, is factory installed and must remain in the opening provided and marked for the purpose on the water heater. No valve of any type should be installed between the relief valve and the tank.
Relief Valve
The pressure rating of the relief valve must not exceed 150 psi, the maximum working pressure of the water heater as marked on the rating plate.
The Btu/h rating of the relief valve must equal or exceed the Btu/h input of the water heater as marked on its rating plate.
Position the outlet of the relief valve above a suitable open drain to eliminate potential water damage. Piping used should be of a type approved for hot water distribution.
The discharge line must be no smaller than the outlet of the valve and must pitch downward from the valve to allow complete drainage (by gravity) of the relief valve and discharge line.
The end of the discharge line should not be threaded or concealed and should be protected from freezing. No valve of any type, restriction, or reducer coupling should be installed in the discharge line.
WARNING: The tank must be full of water before heater is turned on. The water heater warranty does not cover damage or failure resulting from operation with an empty or partially empty tank.
To Fill the Water Heater
Make certain that the drain valve is closed, then open the shut-off valve in the cold water supply line.
Open each hot water faucet slowly to allow the air to vent from the water heater and piping.
A steady flow of water from the hot water faucet(s) indicates a full water heater.
DO NOT allow the flammable vapour sensor to become submerged in water.
Condensation
Condensation can form on the tank when it is first filled with water.
Condensation might also occur with a heavy water draw and very cold inlet water temperatures.
Drops of water falling on the burner can produce a sizzling or pinging sound.
This condition is not unusual, and will disappear after the water becomes heated.
If, however, the condensation continues, examine the piping and fittings for possible leaks.
10
WARNING: DO NOT attempt to convert this water heater for use with a different type of gas other than the type shown on the rating plate. Such conversion could result in hazardous operating conditions.
Gas Supply
The branch gas supply line to the water heater should be clean 1/2 in. black steel pipe or other approved gas piping material.
A ground joint union or ANSI design certified semi-rigid or flexible gas appliance connector should be installed in the gas line close to the water heater.
The National Fuel Gas Code (NFGC) mandates a manual gas shut-off valve: See
(NFGC) for complete instructions.
If flexible connectors are used, the maximum length shall not exceed 36 in. and must meet the requirements in ANSI
Z21.24-Connectors for Gas Appliances.
If lever type gas shut-offs are used, they shall be T-Handle type.
as part of the appliance, a sediment trap shall be installed downstream of the equipment shutoff valve as close to the inlet of the appliance as practical at the time of the appliance installation. The sediment trap shall be either a tee fitting with a capped nipple in the bottom outlet or other device recognized as an effective sediment trap.
DO NOT use excessive force (over 31.5 ft lbs.) in tightening the pipe joint at the gas control (thermostat) inlet, particularly if teflon pipe compound is used, as the valve body may be damaged.
The inlet gas pressure to the water heater must not exceed 10.5 in. w.c. for natural gas, or 14 in. w.c. for LP gas.
Compound used on the threaded joints of the gas piping must be of the type resistant to the action of LP gas. Use compound sparingly on male threads only.
Where a sediment trap is not incorporated
For purposes of input adjustment, the minimum inlet gas pressure (with main burner on) is shown on the water heater rating plate.
If high or low gas pressures are present, contact your gas supplier for correction.
WARNING: Never use an open flame to test for gas leaks, as property damage, personal injury, or death could result.
Leak Testing
The water heater and its gas connections must be leak tested at normal operating pressures before it is placed in operation.
Turn on the manual gas shut-off valve near the water heater.
Use a soapy water solution to test for leaks at all connections and fittings.
Bubbles indicate a gas leak that must be corrected.
The factory connections to the gas control (thermostat) should also be leak tested after the water heater is placed in operation.
Pressure Testing the Gas Supply System
The appliance and its individual shutoff valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1/2 psi (3.5 kPa).
The appliance must be isolated from the gas supply piping system by closing its individual manual shutoff valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 1/2 psi (3.5 kPa).
WARNING: Failure to install a water heater suitable for the altitude at the location it is intended to serve, can result in improper operation of the appliance resulting in property damage and/or producing carbon monoxide gas, which could result in personal injury, or death.
High Altitude
Input rating of this water heater is based on sea level operation. At higher elevations the actual input rate may be lower than the value listed on the rating label due to the derating of natural gas and LP gas. This water heater can be installed at elevation up to the elevation listed on the rating plate attached to the water heater without any change or modification.
Refer to the Venting Information tables on page 15 for maximum vent lengths.
Contact the local gas supplier for more information.
11
Installing the water heater
Blower
Assembly
Rubber
Coupling
Flue
Baffle
Blower Assembly Installation
Connect blower assembly with the electrical connector. Attach Blower
Assembly to top pan using the six (6) screws provided (See diagram to the left).
DO NOT overtighten screws to ensure plastic does not crack.
Install rubber coupling (supplied in the box with water heater) on blower housing and secure it.
NOTICE: The Blower Assembly is model specific and only the blower assembly supplied should be used on this water heater.
DANGER: Failure to install the blower assembly 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 bodily injury, explosion, fire or death.
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.
The vent pipe must overlap a minimum of ½ in. on each connection. It is important that the vent pipe engages fully into any pipe fitting and be kept in that position until the adhesive has fully cured. DO NOT drill or punch holes in the plastic pipe or fittings.
NOTICE: This unit is equipped with a Flammable
Vapour Sensor. DO NOT apply power until enough time has passed to allow the vapours from the primer and cement to dissipate.
Venting
This water heater is a Category III appliance.
The water heater must be vented to the outdoors as described in these instructions.
DO NOT connect this water heater to an existing vent or chimney - it must be vented separately from all other appliances.
Multi-story venting is permitted in accordance with the National Fuel Gas
Code, ANSI Z223.1/NFPA 54 (current edition).
The unit may be vented horizontally through a wall or vertically through the roof.
Vent pipe runs must be adequately supported along both vertical and horizontal lengths.
Maximum unsupported length is recommended to be no more than 6 feet.
It is imperative that the first hanger be located on the horizontal length immediately adjacent to the first 90-degree elbow from the vertical rise of vent pipe connected to the water heater.
The support method used should isolate the vent pipe from floor joists or other structural members to help prevent the transmission of noise and vibration.
DO NOT support, pin or otherwise secure the venting system in a way that restricts the normal thermal expansion and contraction of the chosen venting material.
If the water heater is being installed as a replacement for an existing power vented water heater, a thorough inspection of the existing venting system must be performed prior to any installation work.
Verify that the correct materials as detailed above have been used, and that the minimum or maximum vent length and terminal locations as detailed in this manual have been met.
Carefully inspect the entire venting system for any signs of cracks or fractures, particularly at the joints between elbows or other fittings and the straight length 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.
NOTICE: The vent piping must be connected to the blower assembly using the rubber coupling and supplied clamps. The vent pipe connections at the blower assembly must be leak tested with soap and water solution upon initial startup. Repair any leaks before allowing the water heater to operate.
Additional installation information for The
Commonwealth of Massachusetts is located on the back page of this manual.
12
Vent Pipe Materials
NOTICE: This unit can be vented using only the following recommended pipe material.
2 inch: PVC (Schedule 40, ASTM D1785)
3 inch: PVC (Schedule 40, ASTM D1785)
2 or 3 inch diameter pipe
CPVC (Schedule 40, ASTM F441)
ABS (Schedule 40, ASTM D2661)
The fittings, other than the TERMINATION, should be equivalent to the following:
PVC (Schedule 40 DWV, ASTM D2665)
CPVC (Schedule 40, ASTM F438)
ABS (Schedule 40 DWV, ASTM D2661)
Use of PVC cellular core (ASTM-F891), ABS
Schedule 40, DWV cellular core (ASTM –
F628), or Radel® (polyphenylsulfone) in nonmetallic venting systems is prohibited.
Models
DO NOT mix ABS pipe and fittings with
PVC or CPVC pipe fittings. Note: It is acceptable to interchange PVC and CPVC pipe and fittings.
NOTE: This water heater may be installed in attics provided ambient temperatures DO NOT exceed 125°F (52°C) and CPVC or ABS pipe and fittings are used for the entire vent system.
Vent pipe materials must be chosen based upon the ambient temperature where the water heater is installed and the location within the vent system. See chart below for material requirements.
Ambient Installation Temperatures and Vent System Material Specifications
Below 100°F (38°C)
0 to Max. ft.
(0 to Max. m)
Equivalent Vent|
System Length
100°F (38°C) to 125°F (52°C)
0 to 10 ft.
(0 to 3 m)
Equivalent Vent
System Length
10 ft. to Max.
(0 m to Max.)
Equivalent Vent
System Length
40 and 50 Gallon PVC, CPVC or ABS CPVC or ABS PVC, CPVC or ABS
13
Installing the water heater
Condensate Management and Vent Risers
There is no condensate collection and disposal required for Rheem water heaters under most conditions. Installations where the vent run is short or it runs through conditioned space in the home, such as basements or interior walls, DO NOT typically cause condensation and will not require any condensation disposal methods regardless of vent pipe slope. Figure 1 shows the recommended vent pipe slope of no less than 1/8 inch per foot away from the water heater. Any condensation in the venting system will drain toward the vent termination. The blower pipe coupling features a capped drain port which is not needed in this case.
NOTICE: Vent riser fittings and pipe must be included in the total vent length calculation as described in the manual.
Slope Away
Drain Port with Cap
CAUTION:
Make sure drain port cap is securely in place.
Figure 1
There are vent piping configurations, when combined with certain environmental conditions that can produce enough condensate to require collection and disposal. When a slope away from the water heater cannot be achieved and condensate handling is required in a horizontal vent system, the vent pipe should be sloped toward the water heater as shown in Figure 2.
Drain Port
Slope Toward
NOTICE: Some models are not supplied with a drainable coupling. If condensation is required, please contact the service department listed on the back of this manual.
Figure 2
Trap
To Drain
• Remove drain port cap.
• Connect flexible condensate drain tube to the blower drain port.
• Loop the drain tube so that it has a circular trap. See Figure 3.
• Secure the top and bottom of the loop with wire ties or plastic zip ties as shown.
• DO NOT restrict any portion of the circular drain tube.
• Loop must be smooth and not collapse the tube.
• Fill circular drain tube with water to make sure combustion gases cannot vent into the room.
14
From Drain
Port
Wire or Zip
Ties
Water
Filled
To Drain
Figure 3
• Condensation collected must be discharged per local codes.
• DO NOT drain over public way or walkway.
• Refer to local codes for any condensate requirements.
If the venting system is vertical and condensation handling is required, then the blower coupling drain port and tube must be used as described previously. Any horizontal portion of the vent pipe must slope toward the water heater at a minimum of 1/8 inch per foot so a water trap is not created.
See Figures 4 & 5 as examples of a vertical installations with condensation removal tube and trap.
Figure 4 Figure 5
A vent riser is used when the vent termination cannot be located above grade or snow lines.
Power vented water heaters installed with a vent riser should have a slope toward the water heater if the venting is long and passes through unconditioned spaces. It is recommended that these installations have the condensate collection and disposal method defined previously. Figure 6 shows a condition where a vent riser is necessary to meet the minimum clearance. Note that the vent pipe must slope back to the water heater so that a water trap is not created at the outside 90 degree elbow.
Figure 6
Floor Above
Ground or Max
Snow Level
Maximum and Minimum Vent Lengths for Residential 40 & 50 Gallon
Power Vents
Minimum vent length for 2 in.vent pipe is one (1) foot of vertical pipe, one (1)
90°elbow, and three (3) feet of horizontal pipe.
Maximum Venting information for 2 in. Vents*
Number of 90° elbows with Vent
One (1)
One (1)
Two (2)
Two (2)
Three (3)
Number of
45° Elbows
None
One (1)
None
One (1)
None
Maximum Vent Pipe
Length in Feet (ft)
0’ - 2,000’
44’
41’
38’
35’
32’
Maximum Vent Pipe
Length in Feet (ft)
2,001’ and above.
24’
21’
18’
15’
12’
* For the 2 in. vent, one 90° elbow is approximately equal to 6 feet of vent pipe. One 45° elbow is approximately equal to 3 feet of vent pipe.
NOTICE: The mixing of 2 in. and 3 in. vent pipe is not recommended. If 3 in. pipe is used, a 2 in. to 3 in. reducer fitting is recommended at the rubber coupling.
This water heater is supplied with a two-inch Schedule 40
PVC 45° vent terminal. When venting with 3 in. pipe, a
Schedule 40 PVC 45° vent terminal must be used. Screens for both 2 in. and 3 in. vent terminals have been included.
Minimum vent length for 3 in. vent pipe is one (1) foot of vertical pipe, one (1)
90°elbow, and four (4) feet of horizontal pipe.
Maximum Venting information for 3 in. Vents**
Number of 90° elbows with Vent
One (1)
One (1)
Two (2)
Two (2)
Three (3)
Three (3)
Four (4)
Four (4)
Five (5)
Number of
45° Elbows
None
One (1)
None
One (1)
None
One (1)
None
One (1)
None
Maximum Vent Pipe
Length in Feet (ft)
0’ - 2,000’
95’
92.5’
90’
87.5’
85’
82.5’
80’
77.5’
75’
Maximum Vent Pipe
Length in Feet (ft)
2,001’ and above.
75’
72.5’
70’
67.5’
65’
62.5’
60’
57.5’
55’
** For the 3 in. vent, one 90° elbow is approximately equal to 5 feet of vent pipe. One 45° elbow is approximately equal to 2.5 feet of vent pipe.
15
16
Installing the water heater
Additional Venting Requirements
Installations requiring less than one (1) foot of vertical pipe before the first elbow, subtract six
(6) feet from the maximum vent length.
Less than 1 ft. vertical pipe before first elbow
Minimum Vent Restrictor
Install the vent restrictor only at the minimum vent lengths listed on page 15 for the model numbers listed below.
43VP40S(P)E2(-E)
PVP40S(P)E2(-E)
6GR40SPVE2
43VP50S(P)E2(-E)
PVP50S(P)E2(-E)
6GR50SPVE2
Vent Pipe
Mesh
Vent Restrictor
Vent Terminal
DO NOT use the vent restrictor for any other vent lengths or on tall models.
Additional PVC Fittings Considerations
DO NOT Use Good Best
Short Sweep 90° Elbow Standard 90° Elbow Long Sweep 90° Elbow
Vent Terminal Clearances
A v
G
H
D
E
V
L
V
B
F v
C
FIXE
D
CLOSE
D
OPE
RAB
LE v
B
B v
OPE
RAB
LE
B
FIXE
D
CLOS
ED v
B
B
A v
J
X
I
M v
K
X
V = Air Supply Inlet Α rea Where Terminal Is Not Permitted
A - Clearance above grade, veranda, porch, deck or balcony
B - Clearance to window or door that may be opened
C - Clearance to permanently closed window
US Installations 1
12 in. (30 cm)
4 ft. (1.2 m) below or to side of opening; 1 ft (300 m) above opening
*
* D - ed above the terminal within a horizontal distance of 2 feet (61 cm) from the center line of the terminal
-
E -
F - Clearance to outside corner
G - Clearance to inside corner
H - Clearance to each side of centerline extended above meter/regulator assembly
I - Clearance to service regulator vent outlet
J - Clearance to nonmechanical air supply inlet to building or the combustion air inlet to any other appliance
*
*
*
*
*
4 ft. (1.2 m) below or to side of opening; 1 ft (30 cm) above opening
K - Clearance to a mechanical air supply inlet 3 ft. (91 cm) above if within 10 ft. (3 m) horizontally
L - Clearance above paved sidewalk or paved driveway located on public property
*
M - Clearance under veranda, porch, deck, or balcony
*
1 In accordance with the current ANSI Z223.1/NFPA 54 National Fuel Gas Code
*
"Clearance in accordance with local installation codes and the requirements of the gas supplier and the manufacturer's installation
instructions"
17
Installing the water heater
Caulk
Rising moisture will collect under eaves
Inside corner
If soffit vent is too close, block off and install new vent at another location
Caulk 6’ caulk zone
6’
6’ caulk zone or to edge of window etc., starting within 6 ft.
4’
Caulk
2 ft. sq. sheet metal plate on brick or masonry surface is recommended.
WARNING : Moisture in the flue gas will condense as it leaves the vent terminal. In cold weather this condensate can freeze on the exterior wall, under the eaves and on surrounding objects. Some discoloration to the exterior of the building is to be expected. However, improper location or installation can result in severe damage to the structure or exterior finish of the building
Additional Considerations
DO NOT install vent terminal under any patio or deck.
To help prevent moisture from freezing on walls and under eaves, DO NOT locate vent terminal on the side of a building with prevailing winter winds.
When terminating the vent pipe through brick or masonry surfaces, a rust-resistant sheet metal backing plate behind the vent termination is recommended. (See illustration.)
DO NOT locate vent terminal too close to shrubbery, as flue gasses may damage them.
Caulk all cracks, seams and joints within six (6) feet of vent terminal.
All painted surfaces should be primed to lessen the chance of physical damage. Painted surfaces will require maintenance.
Insulate vent pipe exposed to cold conditions (attics, crawl spaces, etc.) with inflammable material to help prevent moisture from accumulating in vent pipe.
DO NOT extend exposed vent pipe outside of building.
If other vent terminal configurations are required, See "If You
Need Service" section.
18
NOTICE: All pipe, fittings, solvent cement, primers and procedures must conform to American
National Standards Institute and American Society for Testing and Materials (ANSI/ASTM) standards.
2' x 2' Sheet Metal
Shield on Brick or
Masonry Walls
Vent Pipe
From
Water Heater
Vent Terminal with 1 /
2
" Mesh
Protective Screen
Inside
Once the vent terminal location has been determined, make a hole through the exterior wall to accommodate the vent pipe.
Vent pipe must exit exterior wall horizontally only.
Insert a small length of vent pipe through the wall and connect the coupling as shown to the left.
Pipe Coupling
Outside of
Building Wall
Horizontal Vent Installation
Place the 1/2 in. mesh metal screen inside the terminal fitting and connect it as shown to the vent pipe on the exterior of the building.
Complete the rest of the vent pipe installation to the water heater's vent connector fitting on the blower outlet.
If necessary support horizontal run as previously mentioned.
Vertical Vent Termination Location
Insert 1/2" Mesh Protective
Screen Inside Terminal Elbow The location of the vent terminal depends on the following minimum clearances and considerations (see illustration):
Min. 12" Above Roof
Min. 12" Above
Anticipated Snow
Level.
Max. 24" Above Roof
(Without Additional
Support)
Elbow
Vent Terminal
Short Piece of Vent Pipe
Vent Pipe
Through Roof
Minimum twelve (12) inches above roof.
Minimum twelve (12) inches above anticipated snow level.
Maximum twenty-four (24) inches above roof level without additional support for vent.
Four (4) feet from any gable, dormer or other roof structure with building interior access (i.e., vent, window, etc.).
Ten (10) feet from any forced air inlet to the building.
Any fresh or make-up air inlet such as a dryer or furnace area is considered to be a forced air inlet.
Vertical Vent Installation
Once the vent terminal location has been determined, make a hole through the roof and interior ceiling to accommodate the vent pipe.
Complete the vent pipe installation to the water heater's vent connector fitting on the blower outlet.
Support vertical or horizontal lengths as previously mentioned.
Install adequate flashing where the vent pipe passes through the roof.
Determine the vent terminal height and cut vent pipe accordingly. Refer to the above section for proper vent terminal height.
Connect vent elbow onto vertical pipe through roof.
Connect short piece of vent pipe
(approximately 3 in. long) to elbow, then insert 1/2 in. mesh metal screen into terminal elbow and join it to the short piece of vent pipe.
NOTICE: All pipe, fittings, solvent cement, primers and procedures must conform to American
National Standards Institute and American Society for Testing and Materials (ANSI/ASTM) standards.
Cementing Joints
WARNING: DANGER
OF FIRE OR BODILY
INJURY - Solvent cements and primers are highly flammable. Provide adequate ventilation and DO NOT assemble near heat source or open flame. DO NOT smoke.
Avoid skin or eye contact.
Observe all cautions and warnings on material containers.
All joints in the vent piping must be properly sealed and the following materials are recommended:
PVC materials should use ASTM D2564 grade cement.
CPVC materials should use ASTM F493 grade cement.
ABS materials should use ASTM D2235 grade cement.
Cleaner-Primer and Medium Body
Solvent Cement:
NOTICE: Cement must be fluid; if not, recoat.
Hold the pipe fitting for 30 seconds to prevent the tapered socket from pushing the pipe out of the fitting.
Wipe all excess cement from the joint with a rag. Allow 15 minutes before handling. Cure time will vary according to fit, temperature and humidity.
CAUTION:
For proper installation:
DO NOT use solvent cement that has become curdled, lumpy or thickened.
DO NOT thin solvent cement. Observe shelf precautions printed on the containers.
For applications below 32°F use only low temperature type solvent cement.
Appropriate solvent and cleaner must be used for the type of vent pipe used (PVC,
CPVC or ABS).
Cut pipe end square, remove jagged edges and burrs. Chamfer end of pipe, then clean fitting socket and pipe joint area of all dirt, grease or moisture.
After checking pipe and socket for proper fit, wipe socket and pipe with cleaner-primer. Apply a liberal coat of primer to inside surface of socket and outside of pipe. DO NOT allow primer to dry before applying cement.
Apply a thin coat of cement evenly in the socket. Quickly apply a heavy coat of cement to the pipe end and insert pipe into fitting with a slight twisting motion until it bottoms out.
NOTICE: Stir the solvent cement frequently while using. Use a natural bristle brush or the dauber supplied with the can. The proper brush size is one inch.
NOTICE: This unit is equipped with a
Flammable Vapour Sensor. DO NOT apply power until enough time has passed to allow the vapours from the primer and cement to dissipate.
19
20
Installing the water heater
Wiring
If local codes permit, the water heater may be connected to electric service with the power cord provided ( DO NOT use an extension cord). A grounding receptacle is required.
If local codes DO NOT permit the use of cord connections, a 120 V, 50/60 Hz power supply, with suitable disconnecting means, must be connected to the black and white leads in the heater control enclosure.
A knock-out hole is provided to permit use of conduit or metal-clad cable connectors.
The maximum current draw is approximately
5.0 amps.
The water heater must be electrically grounded in accordance with local codes, or, in the absence of local codes, in accordance with latest edition of the National Electric Code
ANSI/NFPA No. 70. Refer to the figures below for water heater internal wiring.
NOTICE : It is not recommended that this unit be installed on a GFCI circuit.
Diagram Without Optional Electronic Display
CONNECTION DIAGRAM SCHEMATIC
H
< 120 VAC >
N
PRESSURE
SWITCH
INDUCER
BK = BLACK
BL = BLUE
G = GREEN
R = RED
W = WHITE
Y = YELLOW
TEMPERATURE
SWITCH
P1
3
4
5
1
2
MOT
PS
3 x 2 CONNECTOR
BL
R
Y
W
BK
G
3
2
1
5
4
2
3
P3
1
TS1
TS2
TS
FV
P2
1
2
BK
BK
TS1
TS2
FV
W
W
1
2
1
2
3
E1
1
GND
PILOT
ELECTRODE
ASSY
1
SPARK
G
N H
H N
CAUTION! Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. VERIFY PROPER OPERATION AFTER SERVICING!
Diagram With Optional Electronic Display
21
22
Installing the water heater
WARNING: If local codes require external application of insulation blanket kits the manufacturer’s instructions included with the kit must be carefully followed.
Insulation Blankets
Insulation blankets, available to the general public, for external use on gas water heaters are not necessary. The purpose of an insulation blanket is to reduce the standby heat loss encountered with storage tank heaters. This water heater meets or exceeds the National
Appliance Energy Conservation Act standards with respect to insulation and standby loss requirements making an insulation blanket unnecessary.
The manufacturer’s warranty does not cover any damage or defect caused by installation, attachment or use of any type of energy saving or other unapproved devices (other than those authorized by the manufacturer) into, onto or in conjunction with the water heater. The use of unauthorized energy saving devices may shorten the life of the water heater and may endanger life and property.
The manufacturer disclaims any responsibility for such loss or injury resulting from the use of such unauthorized devices.
CAUTION: If local codes require the application of an external insulation blanket to this water heater, pay careful attention to the following so as not to restrict the proper function and operation of the water heater:
DO NOT cover the operating or warning labels attached to the water heater or attempt to relocate them on the exterior of insulation blanket.
DO NOT apply insulation to the top of the water heater. This will interfere with the safe operation of the blower assembly.
DO NOT cover the burner access door, jacket door, gas control (thermostat)/gas valve or pressure and temperature relief valve.
DO NOT apply insulation to the bottom of the water heater or the area where the combustion air inlet openings and
Flammable Vapour Sensor are located.
This area must be unobstructed so as not to restrict combustion air flow to the burner or operation of the sensor.
Inspect the insulation blanket frequently making certain it has not sagged and it is not restricting the air flow to the combustion air inlet openings (perforation holes) or the
Flammable Vapour sensor located around the lower perimeter of the water heater jacket.
This could result in an unsafe operating condition.
Hot and Cold Pipe Insulation Installation
NOTICE: If pipe insulation is used, ensure that the thickness does not exceed ½ in..
Insulation thicker than ½ in. can interfere with the
Blower Assembly
Dilution Air Holes.
Short Model
Blower Shown
Typical vertical piping arrangement
For increased energy efficiency, some water heaters have been supplied with two 24 in. sections of pipe insulation.
Dilution Air
Intake
Tall Model
Blower Shown
Typical horizontal piping arrangement
Please install the insulation, according to the illustrations above, that best meets your requirements.
T&P Insulation Installation
For increased energy efficiency, this water heater has been supplied with a 2 3/8 in. section of T&P insulation. Please install the insulation as shown below.
Typical Side Connect T & P Arrangement.
Slip the insulation cover over the T&P Valve through the center hole and align the hole in the side with the opening of the T&P Valve.
Typical Top Connect T & P Arrangement.
Ensure the T&P Valve opening is not obstructed by the insulation.
Installing the Optional User Display
The following instructions apply only to water heater models factory supplied with the electronic display option.
IMPORTANT NOTICE: This electronic display cannot be added to a water heater not supplied from the factory with an electronic display.
Components supplied with user display models: a. Optional Water Heater Mounting Bracket –
AP14752 b. 12 feet, 18 AWG Thermostat Wire – AP14820 c. Optional Mounting Tape – AP14819 d. Transformer Enclosure – AP14875 e. Screw, #8 x ½ in. Self Drilling Qty 2
AP5925GS f. User Display – AP14697
Installation Instructions:
!
CAUTION: Turn the switch on the blower to the “off” position and disconnect power to the water heater before proceeding!
1. Locate the electrical connection for the
Transformer Enclosure on the top of the water heater. This electrical connection features a white 6-pin plug and white heat shrink.
(Blower may be different in appearance)
2. The Transformer Enclosure
Transformer
NOTICE: DO NOT over tighten to avoid cracking plastic enclosure.
Mounting Holes for
Transformer
4. Determine where the User Display will be located. The display can be attached to the water heater jacket with supplied Water Heater
Mounting Bracket or mounted remotely to a wall via the wall plate up to 100 feet away using 18 AWG solid copper thermostat wire.
Any installation location over 12 feet from the water heater will require additional thermostat wire. (Not supplied.)
5. If remote mounting, go to step 19.
6. Cut enough thermostat wire from the 12 feet provided to connect the front mounted display to the Transformer Enclosure located on the top pan.
7. Strip ½ in. insulation from the 3 wires on both ends. The wire provided is standard 3-wire with the colors GREEN, RED and WHITE.
8. Connect one end of the wire to the Transformer
Enclosure spring terminal strip. From left to right colors shall be GREEN – RED – WHITE.
Wires should easily insert into the terminal strip. If required for wire insertion or removal, use small flat blade screw driver to press the tab located below each wire hole.
9. Remove two strips of Display Mounting Tape and attach to the inside flanges of the Water
Heater Mounting Bracket.
Pin Plug
Display Mounting
Tape Strips features a 6-pin connection located on the circuit board inside the enclosure. Attach the top pan harness connector to this 6-pin connector in the correct orientation.
Six (6) Pin Connection for to Circuit Board
3. Locate the two screw pilot holes on the water heater top to attach the Transformer Enclosure to the top pan. Position the enclosure so the terminal strip opening is visible from the front of the water heater. Secure enclosure to top pan with screws provided in the User Display
Mounting Kit without pinching any wires.
Water Heater
Mounting Bracket for Display
Flange of Mounting
Bracket
23
24
Installing the Optional User Display
10. The Water Heater Mounting Bracket features a wiring slot on the top flange and an opening for the wire. Pass the thermostat wire though the
Water Heater Mounting Bracket opening.
11. Clean any dust or dirt from water heater jacket to allow proper tape adhesion.
12. Remove tape backing and carefully attach to the heater jacket above the Rheem logo. Allow the thermostat wire to be positioned in the wire slot located on the bracket top flange.
13. The User Display will be mounted to the plastic
Water Heater Mounting Bracket.
14. Separate wall plate from the User Display by removing battery cover and carefully pull wall plate from display.
Water Heater
Mounting Bracket
Battery
Cover
User
Display
User Display
Mounting Bracket
NOTICE: The battery backup option is not available on this model.
15. Replace battery cover.
16. Attach display wall plate to heater bracket using the two #6 x ½ in. Type A screws provided in
User Display Mounting Kit. Wire should pass through display wall plate opening.
17. GO TO STEP 26.
18. Remote mounting will not require the Display to
Heater Bracket or Display Mounting Tape. The bracket may be kept for future use or recycled.
19. Choose mounting location and route thermostat wire to this location.
20. Separate wall plate from the User Display by removing battery cover and carefully pull wall plate from display.
21. Replace battery cover.
22. Pass thermostat wire through wire hole in wall plate.
23. Use mounting holes on wall plate to mark wall hole locations.
24. Drill 3/16 in. holes and install wall anchors if required.
25. Use two #6 x 1 in. Type A screws provided in the
User Display box to attach wall plate to surface.
26. Connect thermostat wire to wall plate as follows:
• Top Terminal - GREEN - Data Communication
• Middle Terminal - RED - Power
• Bottom Terminal - WHITE - Common
27. Attach Thermostat Display to wall plate.
!
ATTENTION
:
Leave peel off screen protector on the User Display for customer to review and remove.
28. Connect power to water heater
29. Turn on water heater and allow to heat.
30. Check thermostat display for proper display and function.
Setpoint Temperature
Max Setpoint
Temperature
User Display Features
Your water heater includes a user display for easy local or remote water heater programming. The user display features:
• Water heater temperature setpoint control
• Large, clear, backlit display is easy to read-even in the dark
• Displays relative available hot water
• Service needed indicator.
Scald
Warning
Error
Code
Hot Water
Availability
Heat
Indication
Caution: Risk of Scalding
Increases with Hotter Water
Est. Hot SERVICE
Water NEEDED
Error
88
ON
VAC
Heat
Very Hot
C
B
A
Hot
•
•
•
Low
Max Setting
Done Mute Clear Mode
Up/Down
Keys
Left/Right Keys Vacation Mode
Water Heater Optional User Display -
Operation Instructions
Display Temperature Setting Limits
After power on, all segments on the LCD will be displayed for 2 seconds, (See Diagram A) followed by software revision shown for 2 seconds (See Diagram B).
C A U T I O N : R i s k o f S c a l d i n g
I n c r e a s e s w i t h H o t t e r W a t e r
Est. Hot
Water
Heat
Error
88
ON
VAC
B
A
Very Hot
C
•
•
•
Hot
HI DEMAND
Done Mute
Max Setting
Clear Mode
Diagram A
User Mode is entered after all required data is received from the appliance when powered-up. The display shows temperature setpoint, estimated amount of hot water and maximum temperature setpoint. Heat symbol is turned on when heating cycle is active. Scald warning starts flashing whenever the adjusted setpoint exceeds the “Hot” setting and becomes solid after 30 seconds of flashing.
Unlocking the User Display
The user display includes a display lock that will prevent accidental adjustments to the water heater. To unlock the display, hold down the UP and DOWN arrow buttons until the lock icon flashes and disappears. The display can now be adjusted. The display will automatically relock if no button presses are detected within a 60 second period.
25
Diagram B
Est. Hot
Water
ON
B
A
Very Hot
C
•
•
•
Hot
Low
Display Temperature Setting
Water heater setpoint temperature is shown using vertical bars on the display. The more bars shown the higher the setpoint temperature. Use the UP or DOWN arrows to select the desired setpoint temperature. The top bar indicates the water heater setpoint. The picture to the right shows a setpoint of “A”.
Notice: When the temperature is set above "HOT", the display will show the "Risk of Scalding Caution".
When the desired setpoint is shown on the display, press the "Done" button below the display. The user display will then lock to prevent accidental adjustments.
Done Button
C A U T I O N : R i s k o f S c a l d i n g
I n c r e a s e s w i t h H o t t e r W a t e r
Est. Hot
Water
Heat
ON
B
A
Very Hot
C
•
•
•
Hot
Low
Done Mode
Up/Down
Keys
25
26
Water Heater Optional User Display -
Operation Instructions
Display Temperature Setting Limits
The user display setpoint temperature cannot exceed maximum water heater valve setpoint temperature at any time. Max Setting icon appears when the user display setpoint exceeds the water heater gas valve knob setpoint.
The water heater gas valve knob below is set to HOT therefore the user display shows Hot as the maximum available setpoint. The customer in this example has chosen to set the temperature to Hot. When the user display is set to the maximum available setpoint, the
Max Setting message will appear on the user display.
Est. Hot
Water
ON
User Display
Very Hot
C
B
•
•
•
A
Hot
Low
Max Setting
Water Heater Gas Valve
The water heater gas valve knob below is set to VERY
HOT therefore the user display shows Very Hot as the maximum available setpoint. The customer in this example has chosen to set the temperature between
Low and Hot. With this gas valve knob setting, the full range of temperature setpoints is available at the user display. See Figure on left below.
Est. Hot
Water
ON
Very Hot
C
B
•
•
•
A
Hot
Low
User Display
Water Heater Gas Valve
Estimated Hot Water
Three bars shown on the user display are an estimate of hot water available relative to the temperature setpoint. The chart below describes what each symbol means.
Est. Hot
Water
Tank is full of hot water
Est. Hot
Water
Two thirds of the tank volume available
Est. Hot
Water
One third of the tank volume available
Est. Hot
Water
No hot water available
Vacation Mode
The user display features a vacation mode which sets the water heater temperature to Low. The user display toggles between On and Vacation
Modes when “Mode” key is pressed. Note that the
Estimated Hot Water symbol shows no hot water available when in VAC mode. To return the water heater to normal “ON” mode, unlock the display and press the Mode button.
Est. Hot
Water
VAC
Very Hot
C
B
•
•
•
A
Hot
Low
Mode
Error Display
When an error message is received from the water heater, the "SERVICE NEEDED" icon flashes. See the screen example below. Call your water heater contractor.
Est. Hot
Water
Service
Needed
ON
Very Hot
C
B
•
•
•
A
Hot
Low
27
Installing the water heater continued
Heat Traps
For increased energy efficiency, some water heaters have been supplied with factory installed 3/4 in. NPT heat traps in the hot outlet line and cold water inlet line.
These heat traps may require a minimum of one
(1) 90 ° 3/4 in. NPT elbow and may require an additional 90° 3/4 in. NPT elbow or a 3/4 in. coupling depending on your installation needs.
See Illustration of nipples and heat traps on page 41.
Dilution Air Inlet
Tall Models
Location of Dilution Air Holes
Short Model s
During Installation of this water heater...........
DO
❑ DO check inlet gas pressure to ensure that it is within the range specified on the rating plate.
❑ DO provide adequate air for combustion and ventilation as discussed in the Use and Care
Manual and the National Fuel Gas Code.
❑ DO maintain proper clearances to combustibles as specified on the rating plate.
❑ DO allow enough time for joint cement vapours to dissipate BEFORE applying power to the water heater.
❑ DO ensure that the venting system complies with the guidelines found in the Use and Care
Manual and National Fuel Gas Code.
❑ DO contact a qualified service technician if the main burner will not stay lit. The burner chamber is designed to be sealed utilizing a gasket and tamper resistant screws.
DON’T
❑ DON’T block or restrict Combustion Air Inlet
Openings or the Flammable Vapour Sensor located around the lower portion of the water heater jacket.
❑ DON’T block or restrict the Blower Assembly
Dilution Air holes (see diagram to the left).
❑ DON’T remove the Burner Access Door unless absolutely necessary. This should only be done by a qualified service technician.
A new burner access door gasket must be installed on any burner access door that has been removed.
❑ DON’T install this water heater where standing water may occur. The base of the water heater is meant to be mounted on a dry surface.
❑ DON’T allow cleaners, solvents, or other materials to come into contact with the
Flammable Vapour Sensor.
❑ DON’T operate the water heater if the sight glass or burner access door grommet is damaged or broken (See below).
Sight Glass
Burner Access
Door Grommet
Flammable
Vapour Sensor
28
Installation Checklist
A. Water Heater Location
❑ Close to area of vent.
❑ Indoors and protected from freezing temperatures.
❑ Proper clearance from combustible surfaces observed and water heater not installed on carpeted floor.
❑ Sufficient fresh air supply for proper operation of water heater.
❑ Air supply free of corrosive elements and flammable vapours.
B. Water Supply
❑ Water heater completely filled with water.
❑ Air purged from water heater and piping.
C. Gas Supply
❑ Gas line equipped with shut-off valve, union and sediment trap.
❑ The required inlet gas pressure to the water heater is shown on the water heater rating plate.
D. Relief Valve
❑ Temperature and Pressure Relief Valve properly installed and discharge line run to open drain.
❑ Provisions made to protect area from water damage.
❑ Sufficient room to service heater.
❑ Combustible materials, such as clothing, cleaning materials, rags, etc. clear of the base of the heater.
❑ Clearances of 1 in. from combustion air inlet openings observed
❑ Flammable vapour sensor is not blocked.
❑ Water connections tight and free of leaks.
❑ Soap and water solution used to check all connections and fittings for possible gas leak.
❑ Gas Company inspected installation (if required).
❑ Discharge line protected from freezing.
E. Venting
❑ Heater vented separately from all other appliances.
❑ Flue baffle properly hung in top of heater’s flue.
❑ Blower assembly properly installed.
❑ Proper materials and techniques used in vent assembly.
❑ Vent pipe properly secured to blower housing.
❑ Vent pipe supported at required intervals.
❑ Appropriate minimum clearances observed.
❑ Precautions taken to prevent moisture damage around vent termination.
❑ Vapours from vent pipe cement and primer have dissipated prior to applying electrical power.
F. Wiring
❑ Correct power supply (120 V).
❑ Electrical connections tight.
❑ Heater properly grounded and proper polarity observed.
29
Supplemental instructions for gas water heaters installed in potable water/space heating applications.
Local codes or plumbing authority requirements may vary from the instructions or diagrams provided in this manual and take precedent over these instructions.
Hot water supply to heating unit
Hot water supply to house
From HOT outlet on water heater
Tee fitting for vertical hot water supply lines.
Hot water supply to house
From HOT outlet on water heater
Hot water supply to heating unit
Tee fitting for horizontal hot water supply lines.
Combination Potable Water and Space Heating Application
Tee fitting must be installed as shown. This ensures that any air in the water lines will be purged through the domestic water faucets and showers.
water (potable) heating and space heating and not suitable for space heating applications only.
DANGER: When this system requires water for space heating at elevated temperatures (above 125°F [52°C.]), a mixing valve complying with the Standard for Temperature Actuated Mixing Valves for
Hot Water Distribution Systems, ASSE 1017 must be installed in the hot water supply line to the house in order to reduce the scald hazard potential. Water Heaters for combination water/space heating shall not be used in space-heating-applications only
DANGER: Any piping or components used in the installation of this water heater in a combination potable and space heating application must be suitable for use with drinking water.
NOTICE: Suitable for combination
DANGER : If this water heater is installed in an application intended to supply domestic hot water needs and hot water for space heating purposes, DO
NOT connect the heater to an existing heating unit or components of a heating system that have previously been used with a non drinking water system. Toxic chemicals such as those used for boiler treatment may be present and will contaminate the drinking water supply causing possible health risks. Never introduce toxic chemicals, such as those used for boiler treatment, into this system.
Notice: 50 ft. - 0 in. maximum distance from water heater to fan coil (developed length) is required for Massachusetts State.
Typical Piping Diagram for Combination Potable/Space Heating Installation
Nominal 3/4" size mixing or tempering valve
(refer to warning above). Follow mixing or tempering valve manufacturer’s instructions for installation of the valve.
Spring loaded check valve in heating unit hot water supply line and cold water return line (not supplied with water heater)
Air vent
3/4" Tempered domestic hot water supply to house.
Pressure Gauge
3/4" Check Valve with 1/8" Hole
3/4" Shut-Off Valve (Typ.)
3/4" cold water supply
3/4" Shut-Off Valve (Typ.) is incorporated in some heating units. Refer to the installation instructions supplied with specific heating unit to determine if it is required.
3/4" Shut-
Off Valve
(Typ.)
Heat Trap
6” Min.
2 Gallon Thermal
Expansion Tank
(if required-not supplied with water heater)
Hot water coil
All bronze pump.
See diagrams above for proper pipe application for vertical or horizontal supply lines.
Temperature and Pressure Relief
Valve, tie to location approved by local code
140
°F
120
°F t o 13
0°F
°
Air bleed valve.
Water Sample Tap.
Gas line to water heater
Temperature and pressure relief valve discharge line
Gas Control (Thermostat)
Gas Fired
Water Heater
Drain valve
(not supplied with water heater)
To HVAC Unit.
T FAN
Isolation valve in cold water return line from heating unit (not supplied with water heater)
Gas Direct Vent discharge must comply with Local and State Codes
Air Handler
Combustion Air Inlet
Openings
Vacuum Relief Valve
(Not Supplied)
Electronically controlled pump timer.
Activates every 6 hours for 60 seconds.
Wire to bronze pump.
6” Air Gap If required, install per local codes and valve manufacturer’s instructions.
30
Lighting the water heater
Before operating this water heater, be sure to read and follow the instructions on the label pictured below and all other labels on the water heater, as well as the warnings printed in this manual. Failure to do so can result in unsafe operation of the water heater resulting in property damage, personal injury, or death. Should you have any problems reading or following the instructions in this manual,
STOP, and get help from a qualified person.
FOR YOUR SAFETY READ BEFORE OPERATING
Manual instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life.
A.
B.
2.
This appliance is equipped with an ignition device which automatically lights the pilot. DO NOT try to light the pilot by hand.
BEFORE PUTTING THIS APPLIANCE INTO
SERVICE - Smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
DO NOT try to light any appliance.
DO NOT touch any electric switch;
DO NOT use any phone in your building.
Immediately call your gas supplier from a neighbor’s phone. Follow the gas suppliers instructions.
C.
D.
Slide the “ON/OFF” switch located on the gas valve to the “OFF” Position.
If you cannot reach your gas supplier, call the fire department.
Use only your hand to turn the gas control knob. Never use tools. If the knob will not turn by hand, do not try to repair it, call a qualified service technician. Force or attempted repair may result in fire or explosion.
DO NOT use this appliance if any part has been under water. Immediately call a qualified installer or service agency to replace a flooded water heater. Do not attempt to repair the unit! It must be replaced!
1.
OPERATING INSTRUCTIONS
Stop! Read the safety information above on this label.
10.
Slide the “ON/OFF” switch located on the gas valve to the “ON” position.
11.
Set the thermostat dial to the desired setting.
3.
Toggle the “ON/OFF” switch located on the blower assembly to the “OFF” position.
4.
Turn off all electric power to the appliance.
12.
If the appliance will not operate, follow the instructions “TO TURN OFF
GAS TO APPLIANCE” and call your service technician or gas supplier.
5.
Set the valve thermostat dial to “LOW”.
6.
This appliance has an automatic spark ignition system. DO NOT attempt to light the pilot by hand.
7.
Wait five (5) minutes to clear out any gas.
If you smell gas, stop! Follow “B’ in the safety information above on the label. If you do not smell gas, go to the next step.
8.
Turn on electric power to the appliance.
9.
Toggle the ”ON/OFF” switch located on the blower assembly to the “ON” position.
1.
2.
TO TURN OFF GAS TO APPLIANCE
Turn off all electric power to the appliance if service is to be performed.
Close manual gas shut-off valve.
31
Operating the water heater
CAUTION: Hydrogen gas can be produced in a hot water system served by this water heater that has not been used for a long period of time (generally two weeks or more). HYDROGEN GAS IS EXTREMELY
FLAMMABLE!! To dissipate such gas and to reduce risk of injury, it is recommended that the hot water faucet be opened for several minutes at the kitchen sink before using any electrical appliance connected to the hot water system. If hydrogen is present, there will be an unusual sound such as air escaping through the pipe as the water begins to flow. DO NOT smoke or use an open flame near the faucet at the time it is open.
Safety Precautions
Do turn off manual gas shut-off valve if water heater has been subjected to over heating, fire, flood, physical damage or if the gas supply fails to shut off.
DO NOT turn on water heater unless it is completely filled with water.
DO NOT turn on water heater if cold water supply shut-off valve is closed.
DO NOT allow combustible materials such as newspaper, rags or mops to accumulate near water heater.
DO NOT store or use gasoline or other flammable vapours and liquids, such as adhesives or paint thinner, in vicinity of this or any other appliance. If such flammables must be used, open doors and windows for ventilation, and all gas burning appliances in the vicinity should be shut off including their pilot burners, to avoid vapours lighting.
NOTICE: Flammable vapours can be drawn by air currents from surrounding areas to the water heater.
If there is any difficulty in understanding or following the Operating Instructions or the Care and Cleaning section, it is recommended that a qualified person or serviceman perform the work.
Operating Procedure
This heater is equipped with an electronically lit pilot to light the main burner. The pilot is automatically lit each time there is a demand for heating the water. On initial start-up, it is recommended that the outer door be removed
(leave inner door in place for safety) to determine if the pilot and main burner are operating properly.
Once filled with water, it is necessary to plug the power cord in and make sure the “ON/OFF” switch located on the blower assembly is in the
“ON” position and the gas control switch is in the
“ON” position. The blower will start and within seconds the pilot will light followed by the main burner. After the main burner ignites, replace the outer door.
If no main burner flame is established, the gas control will go through three trials for ignition before going into a lock-out. A warning light will alert the user of this lock-out condition. If this happens, refer to “Troubleshooting Guide.”
!
DANGER: Hotter water increases the
Potential for Hot
Water SCALDS.
Households with small children, disabled, or elderly persons may require a 120°F or lower gas control
(thermostat) setting to prevent contact with
HOT water.
Water Temperature Setting
The temperature of the water in the water heater can be regulated by turning the knob on the front of the gas control (thermostat). Safety and energy conservation are factors to be considered when selecting the water temperature setting of the water heater’s gas control (thermostat(s)).
The lower the temperature setting, the greater the savings in energy and operating costs.
To comply with safety regulations, the gas control (thermostat) was set at 120°F before the water heater was shipped from the factory.
The recommended starting point temperature is
120°F.
Water temperatures above 125°F can cause severe burns or death from scalding. Be sure to read and follow the warnings outlined in this manual and on the label located on the water heater near the gas control thermostat.
Mixing valves are recommended for reducing point of use water temperature by mixing hot and cold water in branch water lines. It is recommended that a mixing valve complying with the Standard for Temperature Actuated
Mixing Valves for Hot Water Distribution
Systems, ASSE 1017 be installed. See page 4 for more details and contact a licensed plumber or the local plumbing authority for further information.
The chart on the next page may be used as a guide in determining the proper water temperature for your home.
32
Water Temperature Setting…
The following is additional information which aid in determining a safe working temperature to meet each household need.
Maximum water temperatures occur just after the burner has shut off. To determine the water temperature, turn on a hot water faucet and place a thermometer in the water stream. If an adjustment to the water temperature is preferred, then refer to the Water Heater User Display – Operation Instructions for instruction on adjusting the local and remote user display temperature setpoints.
A condition known as “stacking” or “layering” can occur when a series of short and frequent hot water draws are taken. The hottest temperature water will be at the top of the tank, closest to the outlet pipe delivering hot water to the home.
Stacking can cause this top layer of water to be hotter than the water toward the bottom of the tank near the gas control (thermostat). Therefore, always remember to test the water temperature with your hand before use and remember that hotter water increases the risk of scald injury.
Also, always supervise young children or others who are incapacitated.
The gas control (thermostat) is constructed with a built in safety shut-off device designed to shut off the gas supply to the burner if the main burner is extinguished for any reason.
The gas control (thermostat) is also equipped with a gas shut off device that will shut off the gas supply to the burner if the water heater exceeds normal operating temperatures. Refer to the “Before You Call For Service” section of this manual, or contact your dealer.
!
WARNING: Should overheating occur or the gas supply fail to shut off, turn off the manual gas control valve to the appliance
If the water heater has been subjected to fire, flood or physical damage, turn off the manual gas control (shut-off) valve and DO NOT operate the water heater again until it has been checked by a qualified service technician.
NOTICE: DO NOT use this appliance if any part has been under water.
Immediately call a qualified installer or service agency to replace a flooded water heater. DO NOT attempt to repair the unit! It must be replaced.
130°F
140°F
150°F 160°F
120°F
113°F
105°F
98°F
90° F
Time/Temperature Relationship in Scalds
Water Temperature
120°F
125°F
130°F
135°F
140°F
145°F
150°F
155°F
Table courtesy of Shriners Burn Institute
Time To Produce a Serious Burn
More than 5 minutes
1 1 /
2
to 2 minutes
About 30 seconds
About 10 seconds
Less than 5 seconds
Less than 3 seconds
About 1 1 /
2
seconds
About 1 second
33
34
Operating the water heater
Sequence of Operation…
1. During initial start-up or a call for heat, the control will verify the vacuum switch is open.
2. Once the control verifies the blower vacuum switch is open, the control will energize the blower motor for the pre-purge sequence (approximately 5 seconds).
3. The control will verify the blower vacuum switch has closed, ensuring that the blower is functioning properly and that the venting system is not blocked.
4. The control will then proceed through a sequence of self-diagnostics before initiating a trial for ignition.
5. During the trial for ignition, the pilot will spark in an attempt to light the pilot. Once the pilot flame is established, the main gas valve will open allowing gas to flow to the main burner.
6. The main burner and pilot will remain lit throughout the heat cycle until the water temperature setting is reached.
7. Once the water temperature setting is reached, the control will close the main gas valve and pilot valve which will extinguish both the main burner and pilot burner flames.
8. The blower motor will stay energized for an additional 30 seconds after the control verifies that the burner flame is extinguished in order to clear combustion gases from the water heater.
9. After the post-purge sequence, the control will de-energize the blower motor and go into a stand-by mode awaiting the next call for heat.
This water heater is equipped with a flammable vapour sensor that is monitored continuously by the electronic control in all modes of operation.
In the event that flammable vapours are detected, the control will automatically shut down the water heater and prevent the water heater from being started again.
The following is a list of materials that will cause the Flammable Vapour Sensor to shut down the water heater.
Vapours of Gasoline.
Vapours of certain flammable paints, stains, and thinners.
Vapours of vent pipe Cement & Solvents.
Bleach (direct contact with flammable vapour sensor).
Some other flammable materials and their vapours.
If the flammable vapour sensor shuts down the water heater, then the electronic control will display the appropriate error code and you should then promptly contact a qualified service technician.
Refer to the “WARNING” on page 3 for additional information.
Care and cleaning of the water heater
Draining the Water Heater
!
CAUTION: Shut off gas to the
!
DANGER: Before manually pressure relief valve, make certain
.
Before turning off the cold water supply to the water heater, open a hot water faucet allowing sufficient cold water into the tank to prevent the risk of a scald injury while draining the water heater. Once the water in the tank is no longer hot, turn off the cold water supply to the water heater.
Open a hot water faucet or lift the handle on the relief valve to admit air to the tank.
Attach a garden hose to the drain valve on the water heater and direct the stream of water to a drain. Open the valve.
DANGER: Before manually operating the relief valve, make certain no one will be exposed to the danger of the hot water released by the valve. The water may be hot enough to create a scald hazard. The water should be released into a suitable drain to prevent injury or property damage.
!
DANGER: Hotter water increases the potential for
Hot Water Scalds.
Dilution Air Inlet
Tall Models
Location of Dilution Air Holes
Short Models
Routine Preventative Maintenance
Properly maintained, your water heater will provide years of dependable troublefree service.
It is recommended that a periodic inspection of the gas control (thermostat), burner, relief valve, internal flue-way and venting system should be made by service personnel qualified in gas appliance repair.
It is suggested that a routine preventative maintenance program be established and followed by the user.
Inspect plastic vent pipe. Make certain that all joints are secure and that vent pipe supports are all in place. Check the outdoor vent terminal to see that it is free of obstructions, and that there is no damage nearby caused by condensate.
Inspect dilution air inlet and combustion air inlet openings. Make certain no blockage exists. Clean any lint, dirt or oil accumulation that may exist.
At least once a year, lift and release the lever handle on the temperature pressure relief valve, located near the top of the water heater, to make certain the valve operates freely. Allow several gallons to flush through the discharge line to an open drain.
NOTICE: If the temperature and pressure relief valve on the water heater discharges periodically, this may be due to thermal expansion in a closed water system. Contact the water supplier or your plumbing contractor on how to correct this.
DO NOT plug the relief valve outlet.
A water heater’s tank can act as a settling basin for solids suspended in the water. It is therefore not uncommon for hard water deposits to accumulate in the bottom of the tank. If allowed to accumulate, these solids can cover the gas control (thermostat) sensors, causing the sensors to operate erratically. Because accumulated solids can prevent the gas control (thermostat) sensors from accurately reading the water temperature, the water at the fixture can be hotter than the gas control (thermostat) setting. It is suggested that a few quarts of water be drained from the water heater’s tank every month to clean the tank of these deposits.
Rapid closing of faucets or solenoid valves in automatic water using appliances can cause a banging noise heard in a water pipe. Strategically located risers in the water pipe system or water hammer arresting devices can be used to minimize the problem.
The anode rod should be removed from the water heater’s tank annually for inspection and replaced when more than 6 in. of core wire is exposed at either end of the rod.
Make sure the cold water supply is turned off before removing anode rod.
This water heater incorporates a combustion shut off device that shuts the operation of the water heater down if undesirable combustion conditions occur, such as the presence of flammable vapours or blockage of the combustion air inlet openings. Please contact a Qualified
Service Technician if this occurs.
DANGER: Failure to perform the recommended Routine Preventative
Maintenance can harm the proper operation of this water heater, which can cause carbon monoxide dangers, excessive hot water temperatures and other potentially hazardous conditions.
35
Care and cleaning of the water heater
!
DANGER:
Combustible materials, such as clothing, cleaning materials, or flammable liquids, etc., must not be placed against or next to the water heater.
Housekeeping
Visually inspect the pilot.
To ensure sufficient ventilation and combustion air supply, proper clearances must be maintained.
When installed in a closet, DO NOT block or obstruct any of the combustion air inlet openings located around the perimeter of the water heater. A minimum of 1 in. is required between these combustion air inlet openings and any obstruction.
DO NOT obstruct or block the Flammable
Vapour Sensor. The sensor does not require any maintenance or cleaning.
DO NOT expose to cleaning agents.
Dilution Air Inlet
Tall Models
Venting System Inspection
The water heater’s internal flue must be inspected annually to be certain it is clean by removing the blower assembly and flue baffle.
When reinstalling the flue baffle make certain it is hung securely by its hanger at the top of the flue way.
Reinstall the blower assembly.
Inspect plastic vent pipe. Make certain that all joints are secure and that vent pipe supports are all in place. Check the outdoor vent terminal to see that it is free of obstructions, and that there is no damage nearby caused by condensate.
Inspect dilution air holes. Make certain no blockage exists. Clean any lint, dirt or oil accumulation that may exist.
Test for spillage at the dilution air holes after 5 minutes of burner operation. Place a blown out match or candle close to the dilution are holes. The smoke from the candle or match should be drawn into the dilution air holes. If the smoke is pushed away from the dilution air holes, the blower or vent system may be blocked.
Contact qualified service personnel.
Location of Dilution Air Holes
Short Models
36
Proper burner flame pattern
Burner Inspection
Visually inspect the pilot flame and main burner annually.
Through the sight glass, inspect the pilot and burner lighting. If any unusual pilot or burner operation is noted, the water heater should be shut off until qualified service assistance can be obtained.
!
CAUTION: For your safety, cleaning of the burner must be performed only by qualified service personnel, as it involves the disconnection of gas piping and leak testing. The burner chamber is a sealed area. If the burner access door is removed, the burner access door gasket must be replaced.
For cleaning, remove the burner from the water heater. A vacuum cleaner can be used on the burner and floor shield inside the water heater. The burner can also be cleaned by scrubbing with mild detergent.
NOTICE: Refer to the
Hydrogen Gas Caution in the Operating Instructions.
Vacation and Extended Shut-Down
If the water heater is to remain idle for an extended period of time, the power and water to the appliance should be turned off to conserve energy and prevent a build-up of dangerous hydrogen gas.
After a long shut-down period, the water heater’s operation and controls should be checked by qualified service personnel. Make certain the water heater is completely filled again before placing it in operation.
The water heater and piping should be drained if they might be subjected to freezing temperatures.
NOTICE: DO NOT remove the anode rod from the water heater’s tank, except for inspection and/or replacement, as operation with the anode rod removed will greatly shorten the life of the glass lined tank and will exclude warranty coverage.
Anode Rod
This water heater is equipped with an anode rod designed to prolong the life of the glass lined tank. The anode rod is slowly consumed, thereby eliminating or minimizing corrosion of the glass lined tank.
Water sometimes contains a high sulfate and/or mineral content and together with cathodic protection process can produce a hydrogen sulfide, or rotten egg odor in the heated water. Chlorination of the water supply should minimize the problem.
37
38
Before You Call For Service…
Troubleshooting Tips
Save time and money! Review the charts on the following pages first and you may not need to call for service.
This water heater incorporates a combustion shut off device that shuts the operation of the water heater down if undesirable combustion conditions occur, such as the presence of flammable vapours or blockage of the combustion air inlet openings. Please contact a Qualified Service Technician if this occurs.
Problem
Condensation
Yellow flame or soot
Unable to light the main burner
Main burner does not stay lit
Possible Causes
This usually happens when a new water heater is filled for the first time.
Moisture from the products of combustion condensing on the tank surface.
An undersized water heater will cause condensation.
Scale on top of the burner.
Flue or Combustion air inlet openings are restricted.
Not enough combustion or ventilation air supplied to the water heater location.
Air in gas line.
Blocked Exhaust.
Pressure Switch.
Wire Connection not fully secured.
Combustion Shut-off Device tripped.
Gas Control Problem.
Combustion Shutoff Device
Tripped.
What To Do
This is normal. After the water in the tank warms up, the condensation will disappear. If, however, the condition persists, examine the piping and fittings for possible leaks
This is normal and will disappear in time.
Excessive condensation can cause main burner outage
Use a water heater size that meets the requirements of your needs.
Contact a qualified service technician to remove scale.
Remove obstruction or debris from flue or com bustion air inlet openings on water heater jacket.
Proper operation of the water heater requires air for combustion and ventilation. See the
Combustion and Ventilation Air information in the “Installing The Water Heater” section of this manual.
Contact a qualified service technician to purge the air from the gas line.
Contact a qualified service technician to evaluate vent pipe for blockage
Make sure the pressure switch hose is not
"kinked".
Contact a qualified service technician to confirm wire connections.
Combustion shut-off device should be inspected by a qualified service technician.
Contact a qualified service technician.
The combustion shutoff device should be inspected by a qualified service technician.
CAUTION: For your safety DO NOT attempt repair of gas piping, gas control (thermostat), burners, vent connectors or other safety devices. Refer repairs to qualified service personnel.
Before You Call For Service…
Troubleshooting Tips
Save time and money! Review the charts on the following pages first and you may not need to call for service.
This water heater incorporates a combustion shut off device that shuts the operation of the water heater down if undesirable combustion conditions occur, such as the presence of flammable vapours or blockage of the combustion air inlet openings. Please contact a Qualified Service Technician if this occurs.
Problem
Rumbling noise
Relief valve producing popping noise or draining
Not enough or no hot water
Water is too hot
Possible Causes What To Do
Scale and sediment in tank.
Clean tank.
Pressure build up caused by thermal expansion to a closed system.
Water usage may have exceeded the capacity of the water heater.
Low gas pressure.
The gas control (thermostat) may be set too low.
Leaking or open hot water faucets.
This is an unacceptable condition and must be corrected. Contact the water supplier or plumbing contractor on how to correct this. DO NOT plug the relief valve outlet.
Wait for the water heater to recover after an abnormal demand.
Check gas supply pressure and manifold pressure.
See the “Water Temperature Setting” of The Water
Heater section of this manual.
Make sure all faucets are closed.
Check valve error codes.
Refer to gas valve error code table on page 40.
“ON/OFF” switch turned off.
Turn “ON”.
Blower unplugged.
Combustion Shutoff System tripped
The gas control (thermostat) is set too high.
Gas Control (Thermostat)
Defective.
Plug in. Verify power supply (120VAC).
Contact a qualified service technician.
See the “Water Temperature Setting” of The Water
Heater section of this manual.
Contact a qualified service technician to replace the gas control (thermostat).
CAUTION: Make certain power to water heater is “OFF” before removing protective cover FOR ANY REASON.
CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. VERIFY PROPER OPERATION AFTER SERVICING.
CAUTION: For your safety DO NOT attempt repair of gas piping, gas control (thermostat), burners, vent connectors or other safety devices. Refer repairs to qualified service personnel.
39
40
Gas Valve LED Codes
LCD CODE
For Optional
Display
GAS VALVE
LED
STATUS/PROBLEM
None
None
12
44
46
31
14
11
45
13
14
10
47
49
89
15
93
Short flash once every four seconds
“Heartbeat”, alternates bright/dim
One Flash, three second pause
Two Flash, three second pause.
Three Flash, three second pause
Four Flash, three second pause
IDLE (no call for heat, no fault conditions)
Call For Heat (no fault conditions)
Low flame signal
(control continues to operate)
Pressure switch failed closed
Pressure switch failed open.
TCO limit lockout
PROBABLE CAUSE
Temperature setpoint achieved and burner is off
Water temperature is below setpoint and burner is on
Pilot tube restriction, carbon buildup on electrode, pilot wire damage or gas supply
Pressure switch tube blockage or faulty pressure switch.
Vent blockage or improper installation, switch tube blockage, faulty switch, blower improper operation or temperature switch open
Thermal well fault, gas control fault or tank is not filled with water
SOLUTION
No solution required
No solution required
1. Gas supply pressure is low
2. Low voltage supply
3. Pilot replacement
1. Pressure switch wiring incorrect
2. Replace pressure switch
3. Replace tube or clear blockage.
1. Pressure switch wiring incorrect
2. Replace pressure switch
3. Air intake or exhaust obstructed
4. Replace blower temperature switch
5. Replace blower
1. Reset valve and check for proper valve cycling
2. Make sure tank is full of water
Five Flash, three second pause
Flame out of sequence Pilot or burner valve has failed open 1. Replace gas valve control
Six-One Flash, three second pause Failed trial for ignition
Six-Two Flash, three second pause
Six-Three Flash, three second pause
Recycle limit - PS/limit opened
Recycle limit - flame lost
Insufficient gas supply, unstable pilot, carbon buildup on electrode or wire/pilot tube damage
Vent blockage or improper installation, switch tube blockage, faulty switch, blower improper operation, blower temperature switch open or excessive wind at vent termination
1. Check gas supply
2. Replace pilot
1. Pressure switch wiring incorrect
2. Replace pressure switch
3. Air intake or exhaust obstructed
4. Replace blower temperature switch
5. Replace blower
6. Check for vent termination compliance as stated in this manual
Pilot tube restriction, low gas supply pressure, carbon buildup on electrode, wire/pilot tube damage or combustion air port blockage
1. Gas supply pressure is low
2. Jacket air holes obstructed
3. Pilot replacement
Six-Four Flash, three second pause
Soft Lockout - flame out of sequence sensed
Valve stuck in open position 1. Replace gas valve control
Six - Five Flash, three second pause Failed Ignition Lockout
Seven Flash, three second pause
Eight-One Flash,
Flammable vapour sensor lockout three second pause FVS fault detected
Eight-Two Flash, three second pause
Eight-Three Flash, three second pause
Eight-Four Flash,
Temperature sensor fault detected
Electronics fault detected three second pause Valve fault detected
Insufficient gas supply , pilot damage or gas valve damage
Gasoline or other flammable gas was detected near the appliance or the sensor has failed
Flammable vapour sensor resistance is out of range, wiring to FV sensor is faulty or control is faulty
Thermal well fault
Thermal well fault or gas control fault
1. Check gas supply
2. Replace pilot
3. Replace gas valve
1. Verify no gasoline or flammable vapours are present
2. Reset control using ON/OFF switch on the gas control valve
3. Replace the flammable vapour sensor
1. Replace FV sensor
2. Replace FV sensor wiring
3. Replace gas control valve
1. Check thermal well wiring connection
2. Replace thermal well
1. Replace gas control valve
2. Replace thermal well
Gas control valve needs to be reset or has been damaged
1. Cycle power to gas control valve
2. Replace gas control valve
CAUTION: Make certain power to water heater is “OFF” before removing protective cover FOR ANY REASON.
CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation.
VERIFY PROPER OPERATION AFTER SERVICING.
CAUTION: For your safety DO NOT attempt repair of gas piping, remote control, burners, vent connectors or other safety devices.
Refer repairs to qualified service personnel.
Replacement Parts
For 40 and 50 gallon models using natural or LP gas.
Instructions For Placing a Parts Order
All parts orders should include:
The model and serial number of the water heater from the rating plate.
Specify type of gas (natural or LP) as marked on the rating plate.
Part description (as noted below) and number of parts desired.
Refer to page 44.
CAUTION: For your safety, DO
NOT attempt repair of gas piping, gas control (thermostat), burners, vent connectors or other safety devices.
Refer repairs to qualified service personnel.
Use only original equipment replacement parts.
Rubber
Coupling
Blower
Assembly
(Appearance may differ)
** Heat
Trap
Nipple
Anode rod
** Heat Trap Nipple
Flue baffle and hanger
Dip tube
Dip tube gasket
Temperature and pressure relief valve
*Burner Assembly Kit
The kit provides extra speed clips and tamper resistant screws.
**
May differ in actual appearance.
Drain valve
Gas Control (Thermostat)
Flammable Vapour Sensor
*Burner Access Door Gasket
*Burner orifice
*Igniter
*Combustion Shut-off Device (enlarged view)
Located inside the combustion chamber.
*Burner Access Door
*Burner
Gas Control Shank
*Burner supply tube
Vacuum Relief Valve
(Not Supplied)
*Sight Glass
Jacket Door
If required, install per local codes and valve manufacturer’s instructions.
*Burner Access Door Grommet
41
42
Notes…
Notes…
43
IF YOU NEED SERVICE
1 Should you have any questions about your new water heater, or if it requires adjustment, repair, or routine maintenance, it is suggested that you first contact your installer, plumbing contractor or previously agreed upon service agency. In the event the firm has moved, or is unavailable, refer to the telephone directory, commercial listings or local utility for qualified service assistance.
2. Should your problem not be solved to your complete satisfaction, you should then contact the Manufacturer’s
National Service Department at the following address:
1241 Carwood Court
Alabama
1-800-432-8373.
When contacting the manufacturer, the following information will be requested: a. Model and serial number of the water heater as shown on the rating plate attached to the jacket of the heater.
b. Address where the water heater is located and physical location.
c. Name and address of installer and any service agency who performed service on the water heater.
d. Date of original installation and dates any service work was performed.
e. Details of the problems as you can best describe them.
f. List of people, with dates, who have been contacted regarding your problem.
Important Instructions for the Commonwealth of Massachusetts
The Commonwealth of Massachusetts requires compliance with regulation
5.08: Modifications to NFPA-54, Chapter 10 : 248 CMR 4.00 and 5.00 for installation of through – the – wall vented gas appliances as follows:
(1) Revise NFPA-54 section 10.5.4.2 by adding a second exception as follows:
Existing chimneys shall be permitted to have their use continued when a gas conversion burner is installed, and shall be equipped with a manually reset device that will automatically shut off the gas to the burner in the event of a sustained back-draft.
(2) Revise 10.8.3 by adding the following additional requirements:
(a) For all side wall horizontally vented gas fueled equipment installed in every dwelling, building or structure used in whole or in part for residential purposes, including those owned or operated by the Commonwealth and where the side wall exhaust vent termination is less than seven (7) feet above finished grade in the area of the venting, including but not limited to decks and porches, the following requirements shall be satisfied:
1. INSTALLATION OF CARBON MONOXIDE DETECTORS. At the time of installation of the side wall horizontal vented gas fueled equipment, the installing plumber or gasfitter shall observe that a hard wired carbon monox ide detector with an alarm and battery back-up is installed on the floor level where the gas equipment is to be installed. In addition, the installing plumber or gasfitter shall observe that a battery operated or hard wired carbon monox ide detector with an alarm is installed on each additional level of the dwelling, building or structure served by the side wall horizontal vented gas fueled equipment. It shall be the responsibility of the property owner to secure the services of qualified licensed professionals for the installation of hard wired carbon monoxide detectors a. In the event that the side wall horizontally vented gas fueled equipment is installed in a crawl space or an attic, the hard wired carbon monoxide detector with alarm and battery back-up may be installed on the next adjacent floor level.
b. In the event that the requirements of this subdivision can not be met at the time of completion of installation, the owner shall have a period of thirty (30) days to comply with the above requirements; provided, however, that during said thirty (30) day period, a battery operated carbon monoxide detector with an alarm shall be installed.
2. APPROVED CARBON MONOXIDE DETECTORS. Each carbon monoxide detector as required in accordance with the above provisions shall comply with NFPA 720 and be ANSI/UL 2034 listed and IAS certified.
3. SIGNAGE. A metal or plastic identification plate shall be permanently mounted to the exterior of the building at a minimum height of eight (8) feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled heating appliance or equipment. The sign shall read, in print size no less than one-half (1/2) inch in size, "GAS VENT DIRECTLY
BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS".
4. INSPECTION. The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not approve the installation unless, upon inspection, the inspector observes carbon monoxide detectors and signage installed in accordance with the provisions of 248 CMR 5.08(2)(a)1 through 4.
(b) EXEMPTIONS: The following equipment is exempt from 248 CMR
5.08(2)(a)1 through 4:
1. The equipment listed in Chapter 10 entitled "Equipment Not Required To
Be Vented" in the most current edition of NFPA 54 as adopted by the Board; and
2. Product Approved side wall horizontally vented gas fueled equipment installed in a room or structure separate from the dwelling, building or structure used in whole or in part for residential purposes.
(c) MANUFACTURER REQUIREMENTS - GAS EQUIPMENT VENTING
SYSTEM PROVIDED. When the manufacturer of Product Approved side wall horizontally vented gas equipment provides a venting system design or venting system components with the equipment, the instructions provided by the manufacturer for installation of the equipment and the venting system shall include:
1. Detailed instructions for the installation of the venting system design or the venting system components; and
2. A complete parts list for the venting system design or venting system.
(d) MANUFACTURER REQUIREMENTS - GAS EQUIPMENT VENT-
ING SYSTEM NOT PROVIDED. When the manufacturer of a Product Approved side wall horizontally vented gas fueled equipment does not provide the parts for venting the flue gases, but identifies "special venting systems", the following requirements shall be satisfied by the manufacturer:
1. The referenced "special venting system" instructions shall be included with the appliance or equipment installation instructions; and
2. The "special venting systems" shall be Product Approved by the Board, and the instructions for that system shall include a parts list and detailed installation instructions.
(e) A copy of all installation instructions for all Product Approved side wall horizontally vented gas fueled equipment, all venting instructions, all parts lists for venting instructions, and/or all venting design instructions shall remain with the appliance or equipment at the completion of the installation.
44
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Key features
FVIR Certified for safety
PowerVent technology
Flammable Vapor Sensor
Adjustable water temperature
Easy-to-follow instructions
Comprehensive troubleshooting guide
Frequently asked questions
Do not try to light any appliance, touch any electrical switch, or use any phone. Immediately call your gas supplier from a neighbor's phone and follow their instructions. If you can't reach them, call the fire department.
Water temperatures above 125°F can cause severe burns or death. The gas control (thermostat) allows for temperature adjustments, but it is recommended to keep the temperature below 125°F, especially in households with children or elderly individuals.
Inspect the vent system for proper installation at initial start-up and at least annually thereafter.
The type of gas (natural gas or LP gas) is specified on the rating plate of the water heater.
