Reliance 650YBVIS, 640YBVIS User Manual

Instruction Manual

RESIDENTIAL GAS WATER HEATERS

DIRECT VENT GAS MODELS

NOT FOR USE IN MANUFACTURED (MOBILE) HOMES

LOW LEAD

NTENT

• For Your Safety •

AN ODORANT IS ADDED TO THE GAS USED

BY THIS WATER HEATER.

ALL TECHNICAL AND WARRANTY QUESTIONS: SHOULD BE DIRECTED TO THE LOCAL DEALER FROM WHOM THE WATER HEATER WAS PURCHASED. IF YOU ARE UNSUCCESSFUL, PLEASE WRITE TO THE COMPANY LISTED ON THE RATING PLATE ON THE WATER HEATER.

KEEP THIS MANUAL IN THE POCKET ON HEATER FOR FUTURE REFERENCE

WHENEVER MAINTENANCE ADJUSTMENT OR SERVICE IS REQUIRED.

1013 PART NO. 321350-002

SAFE INSTALLATION, USE AND SERVICE

Your safety and the safety of others is extremely important in the installation, use and servicing of this water heater.

Many safety-related messages and instructions have been provided in this manual and on your own water heater to warn you and others of a potential injury hazard. Read and obey all safety messages and instructions throughout this manual. It is very important that the meaning of each safety message is understood by you and others who install, use or service this water heater.

This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that follow this symbol to avoid possible injury or death.

DANGER indicates an imminently hazardous situ-

DANGER

WARNING

CAUTION

ation which, if not avoided, will result in injury or death.

WARNING Indicates a potentially hazardous situ-

ation which, if not avoided, could result in injury or death.

CAUTION Indicates a potentially hazardous situation which, if not avoided, could result in minor or moderate injury.

CAUTION used without the safety alert symbol

CAUTION

All safety messages will generally tell you about the type of hazard, what can happen if you do not follow the safety message and how to avoid the risk of injury.

The California Safe Drinking Water and Toxic Enforcement Act requires the Governor of California to publish a list of substances known to the State of California to cause cancer, birth defects, or other reproductive harm, and requires businesses to warn of potential exposure to such substances.

WARNING: This product contains a chemical known to the State of California to cause cancer, birth defects, or other reproductive harm. This water heater can cause low-level exposure to some of the substances included in the Act.

Massachusetts Code requires this water heater to be installed In accordance with Massachusetts 248-CMR 2.00: State Plumbing Code and 248-CMR 5.00. This product is certiﬁ ed to comply with a maximum weighted average of 0.25% lead content as required in some areas.

• Qualiﬁ ed Installer: A qualiﬁ ed installer must have ability equivalent to a licensed tradesman in the ﬁ elds of plumbing, air supply, venting and gas supply, including a thorough understanding of the requirements of the National Fuel Gas Code as it relates to the installation of gas ﬁ red water heaters. The qualiﬁ ed installer must also be familiar with the design features and use of ﬂ ammable vapor ignition resistant water heaters, and have a thorough understanding of this instruction manual.

• Service Agency: A service agency also must have ability equivalent to a licensed tradesman in the ﬁ elds of plumbing, air supply, venting and gas supply, including a thorough understanding of the requirements of the National Fuel Gas Code as it relates to the installation of gas ﬁ red water heaters. The service agency must also have a thorough understanding of this instruction manual, and be able to perform repairs strictly in accordance with the service guidelines provided by the manufacturer.

• Gas Supplier: The Natural Gas or Propane Utility or service who supplies gas for utilization by the gas burning appliances within this application. The gas supplier typically has responsibility for the inspection and code approval of gas piping up to and including the Natural Gas meter or Propane storage tank of a building. Many gas suppliers also offer service and inspection of appliances within the building.

indicates a potentially hazardous situation which, if not avoided, could result in property damage.

IMPORTANT DEFINITIONS

GENERAL SAFETY

TABLE OF CONTENTS

SAFE INSTALLATION, USE AND SERVICE 2

IMPORTANT DEFINITIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . 2

GENERAL SAFETY 3 TABLE OF CONTENTS 4 INTRODUCTION 5

PREPARING FOR THE INSTALLATION . . . . . . . . . . . . . . 5

INSTALLATION REQUIREMENTS FOR THE COMMONWEALTH OF MASSACHUSETTS 6 TYPICAL INSTALLATION 7

GET TO KNOW YOUR WATER HEATER . . . . . . . . . . . . . 7

REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . 7

MIXING VALVE USAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

LOCATING THE NEW WATER HEATER 9

FACTS TO CONSIDER ABOUT THE LOCATION . . . . . . . 9

INSULATION BLANKETS . . . . . . . . . . . . . . . . . . . . . . . . . 10

VENT TERMINATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

INSTALLING THE NEW WATER HEATER 11

REQUIRED ABILITY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

INSPECT SHIPMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

WATER PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

T&P VALVE AND PIPE INSULATION (IF SUPPLIED). . . 12

TEMPERATURE-PRESSURE RELIEF VALVE . . . . . . . . 12

WATER (POTABLE) HEATING AND SPACE HEATING . . . . 14

CLOSED WATER SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . 14

GAS PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

SEDIMENT TRAPS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

FILLING THE WATER HEATER . . . . . . . . . . . . . . . . . . . . 16

VENTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

HIGH ALTITUDE INSTALLATIONS. . . . . . . . . . . . . . . . . . 17

COMBUSTION AIR AND VENTILATION . . . . . . . . . . . . . 17

VENT TERMINAL CLEARANCES . . . . . . . . . . . . . . . . . . 17

DV TERMINATION SAFETY COVER. . . . . . . . . . . . . . . . 17

VENT CONNECTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . 18

LOCATING CLEARANCE HOLE FOR VENT. . . . . . . . . . 18

HIGH RISE VENT ARRANGEMENT . . . . . . . . . . . . . . . . 18

STANDARD VENT ARRANGEMENT . . . . . . . . . . . . . . . . 19

VENT ASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

SECURING VENT TERMINATION ASSEMBLY TO THE EX-

TERIOR WALL.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

UNCOMPRESSING THE CORRUGATED TUBING. . . . . 19

VENT RESTRICTER PLATE . . . . . . . . . . . . . . . . . . . . . . 19

OFFSET VENT ARRANGEMENT. . . . . . . . . . . . . . . . . . . 20

TEMPERATURE REGULATION 22

TEMPERATURE REGULATION. . . . . . . . . . . . . . . . . . . . 22

OPERATING THE TEMPERATURE CONTROL SYSTEM 22 FOR YOUR INFORMATION 23

EXTERNAL DAMAGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

START UP CONDITIONS . . . . . . . . . . . . . . . . . . . . . . . . . 23

OPERATIONAL CONDITIONS . . . . . . . . . . . . . . . . . . . . . 24

MAINTENANCE 25

VENTING SYSTEM INSPECTION . . . . . . . . . . . . . . . . . . 25

PILOT AND MAIN BURNER. . . . . . . . . . . . . . . . . . . . . . . 25

BURNER FLAMES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

REPLACING THE MANIFOLD/BURNER ASSEMBLY. . . 26

PIEZOELECTRIC IGNITER SYSTEM . . . . . . . . . . . . . . . 26

TESTING THE IGNITER SYSTEM. . . . . . . . . . . . . . . . . . 26

REMOVING AND REPLACING THE GAS CONTROL

VALVE/THERMOSTAT . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

REMOVING THE MANIFOLD/BURNER ASSEMBLY . . . 27 REMOVING THE BURNER FROM THE MANIFOLD/BURN-

ER ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

REPLACING THE PILOT/THERMOPILE ASSEMBLY. . . 28

TEMPERATURE & PRESSURE RELIEF VALVE. . . . . . . 29

DRAINING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

CATHODIC PROTECTION - ANODE . . . . . . . . . . . . . . . . 29

DRAIN VALVE WASHER REPLACEMENT . . . . . . . . . . . 29

ANODE ROD MAINTENANCE . . . . . . . . . . . . . . . . . . . . . 30

LEAKAGE CHECKPOINTS 31

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

TROUBLESHOOTING GUIDELINES 32 RESIDENTIAL GAS WARRANTY 34

INTRODUCTION

Thank You for purchasing this water heater. Properly installed and maintained, it should give you years of trouble free service. Abbreviations Found In This Instruction Manual:

• CSA - Canadian Standards Association

• ANSI - American National Standards Institute

• NFPA - National Fire Protection Association

• ASME - American Society of Mechanical Engineers

• AHRI - Air Conditioning, Heating and Refrigeration Institute

• LLC - Low Lead Content

This gas-ﬁ red water heater is design certiﬁ ed by American Na- tional Standard ANSI Z21.10.1/CSA 4.1 (current edition).

PREPARING FOR THE INSTALLATION

1. Read the “General Safety” section, page 3 of this manual ﬁ rst and then the entire manual carefully. If you don’t follow the safety rules, the water heater will not operate properly. It could cause DEATH, SERIOUS BODILY INJURY AND/OR PROPERTY DAMAGE. This manual contains instructions for the installation, operation, and maintenance of the gasﬁ red water heater. It also contains warnings throughout the manual that you must read and be aware of. All warnings and all instructions are essential to the proper operation of the water heater and your safety. Since we cannot put everything on the ﬁ rst few pages, READ THE ENTIRE MANUAL BEFORE ATTEMPTING TO INSTALL OR OPERATE THE WATER HEATER.

2. The installation must conform with these instructions and the local code authority having jurisdiction. In the absence of local codes, installations shall comply with the current edition of the National Fuel Gas Code ANSI Z223.1/NFPA. This publication is available from the Canadian Standards Association, 8501 East Pleasant Valley Road, Cleveland, OH 44131.

3. If after reading this manual you have any questions or do not understand any portion of the instructions, call the local gas utility or the manufacturer whose name appears on the rating plate.

4. Carefully plan the place where you are going to put the water heater. Correct combustion, vent action, and vent pipe installation are very important in preventing death from possible carbon monoxide poisoning and ﬁ res, see Figures 1 and 2. Examine the location to ensure the water heater complies with the “Locating the New Water Heater” section in this manual.

5. For California installation, this water heater must be braced, anchored, or strapped to avoid falling or moving during an earthquake. Correct installation procedure instructions may be obtained from California’s Ofﬁ ce of the State Architect, 1102 Q street, Suite 5100, Sacramento, CA 95811. Instructions can also be downloaded to your computer at www.dsa. dgs.ca.gov/Pubs.

6. Massachusetts Code requires this water heater to be installed in accordance with Massachusetts 248-CMR 2.00: State Plumbing Code and 248-CMR 5.00. For more information see next page.

7. This water heater is suitable for combination water (potable) heating and space heating and not suitable for space heating applications only.

INSTALLATION REQUIREMENTS FOR THE COMMONWEALTH OF MASSACHUSETTS

For all side wall terminated, horizontally vented power vent, direct vent, and power direct vent gas fueled water heaters 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 ﬁ nished grade in the area of the venting, including but not limited to decks and porches, the following requirements shall be satisﬁ ed:

INSTALLATION OF CARBON MONOXIDE DETECTORS At the time of installation of the side wall horizontal vented gas fueled equipment, the installing plumber or gasﬁ tter shall observe that a hard wired carbon monoxide detector with an alarm and battery back-up is installed on the ﬂ oor level where the gas equipment is to be installed. In addition, the installing plumber or gasﬁ tter shall observe that a battery operated or hard wired carbon monoxide detector with an alarm is installed on each additional level of the dwelling, building or structure served by the sidewall horizontal vented gas fueled equipment. It shall be the responsibility of the property owner to secure the services of qualiﬁ ed licensed professionals for the installation of hard wired carbon monoxide detectors.

In the event that the side wall horizontally vented gas fueled equipment is installed in a crawl space or an attic, the hard wired carbon monoxide detector with alarm and battery back-up may be installed on the next adjacent ﬂ oor level. In the event that the requirements of this subdivision can not be met at the time of completion of installation, the owner shall have a period of thirty (30) days to comply with the above requirements provided that during said thirty (30) day period, a battery operated carbon monoxide detector with an alarm shall be installed.

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 CSA certiﬁ ed.

SIGNAGE A metal or plastic identiﬁ cation plate shall be permanently mounted to the exterior of the building at a minimum height of eight (8) feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled heating appliance or equipment. The sign shall read, in print size no less than one-half (1/2) inch in size, “GAS VENT DIRECTLY BELOW.

KEEP CLEAR OF ALL OBSTRUCTIONS.”

INSPECTION The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not approve the

installation unless, upon inspection, the inspector observes carbon monoxide detectors and signage installed in accordance with the provisions of 248 CMR 5.08(2)(a) 1 through 4.

EXEMPTIONS: The following equipment is 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.

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.

MANUFACTURER REQUIREMENTS - GAS EQUIPMENT VENTING 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 ﬂ ue gases, but identiﬁ es “special venting systems,” the following requirements shall be satisﬁ ed 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.

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.that the discharge pipe be terminated at an adequate drain inside the building.

TYPICAL INSTALLATION

GET TO KNOW YOUR WATER HEATER REPLACEMENT PARTS

Replacement parts may be ordered through authorized servicers or distributors. When ordering parts, provide complete model and serial numbers (see rating plate), quantity and name of part desired (as listed in Figure 1). Standard hardware items may be purchased locally.

COLD WATER

INLET PIPE

UNION

INLET DIP TUBE

TEMPERATURE AND PRESSURE RELIEF VALVE

VACUUM RELIEF

VALV E

INSTALL PER

LOCAL CODES.

PILOT TUBE

THERMOPILE CONNECTOR

HOT WATER

OUTLET PIPE

ANODE

TRIM PLATE

(OUTSIDE)

TRIM PLATE

(INSIDE)

INLET VALVE

THERMAL

EXPANSION TANK

INSTALL THERMAL EXPANSION TANK IF WATER HEATER IS INSTALLED IN A CLOSED SYSTEM.

PILOT / THERMOPILE ASSEMBLY SCREW

WHITE

WIRE

FLUE BAFFLE

GAS SUPPLY

LINE

MAIN MANUAL

GAS SHUTOFF

VALV E

GROUND-JOINT

UNION

SEDIMENT

TRAP (DIRT

LEG

DISCHARGE PIPE (DO NOT CAP OR PLUG)

GAS CONTROL VALV E/ THERMOSTAT

DRAIN VALVE

METAL DRAIN PAN

6” MAXIMUM AIR GAP

IGNITER WIRE

MANIFOLD

COMPONENT

BLOCK

List of status codes are shown at top of gas control valve/thermostat.

RETAINER CLIP

MANIFOLD DOOR

BURNER AND OTHER FITTINGS NOT SHOW

FOR CLARITY.

OUTER DOOR

ALL PIPING MATERIALS TO BE SUPPLIED BY CUSTOMER.

FIGURE 1

FLOOR DRAIN

MIXING VALVE USAGE

MIXING VALVE

NON-TEMPERED WATER SUPPLY

SUGGESTED PIPING

ARRANGEMENT FOR

TOP CONNECTIONS

TEMPERED POTABLE WATER

SHUT-OFF VALVE

COLD WATER INLET

NON-TEMPERED WATER RETURN

TEMPERATURE-PRESSURE RELIEF VALVE

GAS SUPPLY

DISCHARGE PIPE (DO NOT CAP OR PLUG)

CERTAIN MODELS ARE EQUIPPED WITH SIDE PLUMBING CONNECTIONS FOR SPACE HEATING.

DRAIN VALVE

METAL DRAIN PAN

6” MAXIMUM

AIR GAP

TO SUITABLE DRAIN

FIGURE 2

This water heater has been design certiﬁ ed as complying with American National Standard/CSA Standard for water heaters and is considered suitable for:

Water (Potable) Heating and Space Heating: All models are considered suitable for water (potable) heating and space heating. Not suitable for space heating only.

HOTTER WATER CAN SCALD:

Water heaters are intended to produce hot water. Water heated to a temperature which will satisfy space heating, clothes washing, dish washing, and other sanitizing needs can scald and permanently injure you upon contact. Some people are more likely to be permanently injured by hot water than others. These include the elderly, children, the inﬁ rm, or physically/mentally handicapped. If anyone using hot water in your home ﬁ ts into one of these groups or if there is a local code or state law requiring a certain temperature water at the hot water tap, then you must take special precautions. In addition to using the lowest possible temperature setting that satisﬁ es your hot water needs, a means such as a *Mixing Valve, should be used at the hot water taps used by these people or at the water heater. Mixing valves are available at plumbing supply or hardware stores. Consult a Qualiﬁ ed Installer or Service Agency. Follow mixing valve manufacturer’s instructions for installation of the valves. Before changing the factory setting on the thermostat, read the “Temperature Regulation” section in this manual.

LOCATING THE NEW WATER HEATER

FACTS TO CONSIDER ABOUT THE LOCATION

Carefully choose an indoor location for the new water heater, because the placement is a very important consideration for the safety of the occupants in the building and for the most economical use of the appliance. This water heater is not for use in manufactured (mobile) homes or outdoor installation.

Whether replacing an old water heater or putting the water heater in a new location, the following critical points must be observed:

1. Select a location indoors as close as practical to the vent terminal or location to which the water heater vent piping is going to be connected, and as centralized with the water piping system as possible.

2. Selected location must provide adequate clearances for servicing and proper operation of the water heater.

3. Keep combustibles such as boxes, magazines, clothes, etc., away from the water heater area.

• Sensors mounted in the metal drain pan that turn off the water supply to the entire home when water is detected in the metal drain pan.

• Water supply shut-off devices that activate based on the water pressure differential between the cold water and hot water pipes connected to the water heater.

• Devices that will turn off the gas supply to a gas water heater while at the same time shutting off its water supply.

Also, the water heater must be located and/or protected so it is not subject to physical damage by a moving vehicle.

Installation of the water heater must be accomplished in such a manner that if the tank or any connections should leak, the ﬂ ow will not cause damage to the structure. For this reason, it is not advisable to install the water heater in an attic or upper ﬂ oor. When such locations cannot be avoided, a metal drain pan should be installed under the water heater. Metal drain pans are available at your local hardware store. Such a metal drain pan must have a minimum length and width of at least 2 in. greater that the water heater dimensions, a maximum height of 1.75 in. and must be piped to an adequate drain.

Water heater life depends upon water quality, water pressure and the environment in which the water heater is installed. Water heaters are sometimes installed in locations where leakage may result in property damage, even with the use of a metal drain pan piped to a drain. However, unanticipated damage can be reduced or prevented by a leak detector or water shut-off device used in conjunction with a piped metal drain pan. These devices are available from some plumbing supply wholesalers and retailers, and detect and react to leakage in various ways:

This water heater must not be installed directly on carpeting. Carpeting must be protected by metal or wood panel beneath the water heater extending beyond the full width and depth of the water heater by at least 3 in. in any direction, or if the water heater is installed in an alcove or closet, the entire ﬂ oor must be covered by the panel. Failure to heed this warning may result in a ﬁ re hazard.

• Sensors mounted in the metal drain pan that trigger an alarm or turn off the incoming water to the water heater when leakage is detected.

INSULATION BLANKETS

VENT TERMINATION

Insulation blankets available to the general public for external use on gas water heaters are not necessary with this product. The purpose of an insulation blanket is to reduce the standby heat loss encountered with storage tank water heaters. Your 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.

Should you choose to apply an insulation blanket to this heater, you should follow these instructions (See Figure 1 for identiﬁ ca- tion of components mentioned below). Failure to follow these instructions can result in ﬁ re, asphyxiation, serious personal injury or death.

Before installing water heater determine placement of vent termination.

Make certain to observe vent location limitations, see Figures 3 & 15.

Minimum clearances between the water heater and combustible and noncombustible construction are: 0 in. from sides, 0 in. from back, 4 in. from front of jacket to closet door and 20 in.* from top of jacket to combustible and noncombustible material. Minimum vent clearance: 1 in.**. Provide 3 ft. front clearance for servicing and adequate clearance between the jacket top & ceiling for servicing the ﬂ ue vent area, see Figure 3.

* This clearance (20 in.) is required only to accomodate the minimum vent radius.

** Where the wall is combustible and the wall thickness is over 14 in., 1 in. clearance to combustible surfaces around the vent terminal is needed. The ﬁ rst 14 in. is zero clearance.

• Do not cover the outer door, thermostat or temperature & pressure relief valve.

• Do not cover the instruction manual. Keep it on the side of the water heater or nearby for future reference.

• Do obtain new warning and instruction labels from the manufacturer for placement on the blanket directly over the existing labels.

Make certain the vent locations comply with the current edition of the National Fuel Gas Code ANSI Z223.1/NFPA 54 and/or local codes. There is some important information shown in Figure

15. For a second or more direct vent unit, the distance between vent terminals must be a minimum of 12 in..

FIGURE 3

INSTALLING THE NEW WATER HEATER

REQUIRED ABILITY

INSTALLATION OR SERVICE OF THIS WATER HEATER REQUIRES ABILITY EQUIVALENT TO THAT OF A LICENSED TRADESMAN IN THE FIELD INVOLVED. PLUMBING, AIR SUPPLY, VENTING AND GAS SUPPLY ARE REQUIRED.

INSPECT SHIPMENT

There may be hidden damage caused in transit. Check to be certain all parts of the venting system, as listed below, are present.

CAUTION!!! IF THERE ARE ANY DAMAGED PARTS, DO NOT INSTALL THIS WATER HEATER. REPORT ANY SHORTAGE TO YOUR DISTRIBUTOR OR DAMAGE TO YOUR CARRIER.

This water heater shall not be connected to any heating systems or component(s) used with a non-potable water heating appliance.

All piping components connected to this unit for space heating applications shall be suitable for use with potable water.

GENERAL

The installation must conform to these instructions and the local code authority having jurisdiction. In the absence of local codes, the installation must comply with the current edition of the National Fuel Gas Code ANSI Z223.1/NFPA 54. The code is available from the Canadian Standards Association, 8501 East Pleasant Valley Road, Cleveland, OH 44131.

WATER PIPING

HOTTER WATER CAN SCALD: Water heaters are intended to produce hot water. Water heated to a temperature which will satisfy space heating, clothes washing, dish washing, cleaning and other sanitizing needs can scald and permanently injure you upon contact. Some people are more likely to be permanently injured by hot water than others. These include the elderly, children, the inﬁ rm, or physically/men- tally handicapped. If anyone using hot water in your home ﬁ ts into one of these groups or if there is a local code or state law requiring a certain temperature water at the hot water tap, then you must take special precautions. In addition to using the lowest possible temperature setting that satisﬁ es your hot water needs, a means such as a *mixing valve, should be used at the hot water taps used by these people or at the water heater, see Figure 2. Valves for reducing point of use temperature by mixing cold and hot water are also available:

Consult a Qualiﬁ ed Installer or Service Agency. Follow manufac- turer’s instructions for installation of the valves. Before changing the factory setting on the thermostat, read the “Temperature Regulation” section in this manual.

Toxic chemicals, such as those used for boiler treatment shall not be introduced into this system.

When the system requires water for space heating at temperatures higher than required for domestic water purposes, a mixing valve must be installed. Please refer to Figure 2 for suggested piping arrangement.

Water supply systems may, because of such events as high line pressure, frequent cut-offs, the effects of water hammer among others, have installed devices such as pressure reducing valves, check valves, back ﬂ ow preventers, etc. to control these types of problems. When these devices are not equipped with an internal by-pass, and no other measures are taken, the devices cause the water system to be closed.

As water is heated, it expands (thermal expansion). In a closed system, the volume of water will grow. As the volume of water increases, there will be a corresponding increase in water pressure due to thermal expansion. Thermal expansion can cause premature tank failure (leakage). This type of failure is not covered under the limited warranty. Thermal expansion can also cause intermittent temperature-pressure relief valve operation: water discharged from the valve due to excessive pressure build up. The temperature-pressure relief valve is not intended for the constant relief of thermal expansion. This condition is not covered under the limited warranty.

A properly-sized thermal expansion tank should be installed on all closed systems to control the harmful effects of thermal expansion. Contact a plumbing service agency or your retail supplier regarding the installation of a thermal expansion tank.

NOTE: To protect against untimely corrosion of hot and cold water ﬁ ttings, it is strongly recommended that di-electric unions or couplings be installed on this water heater when connected to copper pipe.

All gas piping must comply with local codes and ordinances or with the current edition of the National Fuel Gas Code ANSI Z223.1/NFPA 54 whichever applies. Copper and brass tubing and ﬁ ttings (except tin lined copper tubing) shall not be used.

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