Rheem PH-25RDVS, ECO-180DV, RUTG-66DV, RTG-66DV, RMTG-66DV User Manual

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Page 1

Use & Care Manual

CERTI FIED

With Installation Instructions for the Installer

Direct Vent Gas

Tankless Water Heater

Warning: This water heater is not suitable

for use in manufactured (mobile) homes!

Paloma PH-25RDVS (N,P)

Rheem/ Ecosense RTG-66DV (N,P) ECO-180DV (N,P)

Ruud RUTG-66DV (N,P)

Richmond RMTG-66DV (N,P)

to explain the features, operation, safety precautions, maintenance and troubleshooting of the water heater. This manual also includes a parts list.

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

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

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

Recognize this symbol as an indication of Important Safety Information!

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

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!

gas supplier’s instructions.

— Do not store or use gasoline or other

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

● 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.

— 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

— 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.

Printed in Japan

31-92683-000

AP14558 (01/08)

Page 2

Safety Information

Safety Precautions ....... 3–6

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

FOR YOUR RECORDS

Write the model and serial numbers here:

Installation Instructions

Location ..................7

Inspect Shipment ...........8

Venting ............... 9-14

Water Connections .... 15, 16

Relief Valve ..............17

Gas Supply .............. 18

High Altitude .............18

Remote Control ....... 19, 20

Electrical Connection ......21

Typical Installation ........22

Pipe Insulation ............23

Installation Checklist .......24

Operating Instructions

Lighting Instructions ...... 25

Water Temperature .... 26, 27

Care and Cleaning

Maintenance ............. 28

Housekeeping ........ 28, 29

Vent Inspection ...........29

Burner Inspection ........ 29

Extended Shut-Down ......29

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.

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.

Draining ................ 30

Freeze Protection ..........30

Troubleshooting Tips

Before You Call

For Service ........... 31, 32

Customer Service

Parts List ................ 33

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

Qualified Installers Only!

Maximum Temperature

Adjustment .............. 34

Minumum Temperature

Adjustment .............. 35

High Altitude Adjustment ...35

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

These words mean:

DANGER

that will result in death or serious injury.

WARNING

could result in death or serious injury

and/or damage to property.

CAUTION

may result in minor or moderate

injury.

Notice:

specified procedure or maintain a specific condition.

An imminently hazardous situation

A potentially hazardous situation that

Attention is called to observe a

Page 3

IMPORTANT SAFETY INFORMATION.

DANGER

FLAMMABLES

Flammable Vapors

Water heater has a main burner flame. The main burner flame:

1. which can come on at any time and

2. will ignite flammable vapors.

Vapors:

1. cannot be seen,

2. are heavier than air,

3. go a long way on the floor and

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

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

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

Keep flammable products:

1. far away from heater,

2. in approved containers,

3. tightly closed and

4. out of children's reach.

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

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

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

READ ALL INSTRUCTIONS BEFORE USING.

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.

DANGER!

INSTALL AND PROPERLY VENT THE WATER HEATER…

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

Be sure to inspect the vent terminal, the air intake, and the coaxial vent system on the water heater 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 coaxial 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 vapors they produce are extremely dangerous. DO NOT handle, use or store gasoline or other flammable or combustible materials anywhere near or in the vicinity of a water heater or any other appliance. Be sure to read and follow the labels on the water heater, as well as the warnings printed in this manual. Failure to do so can result in property damage, bodily injury or death.

Page 4

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IMPORTANT SAFETY INFORMATION

°F

PRIORITY

POWER

ON/OFF

Higher (Hotter) Lower (Cooler)

100 102 104 106 108 110 112 114 116 118 120* 125 130 135 140

°F

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

READ ALL INSTRUCTIONS BEFORE USING.

DANGER!

WATER TEMPERATURE SETTING

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

Time/Temperature Relationship in Scalds

Water Temperature Time To Produce a Serious Burn

120°F (49°C) More than 5 minutes

125°F (52°C) 11/2 to 2 minutes

130°F (54°C) About 30 seconds

135°F (57°C) About 10 seconds

140°F (60°C) Less than 5 seconds

145°F (63°C) Less than 3 seconds

150°F (66°C) About 11/2 seconds

155°F (68°C) About 1 second

Table courtesy of Shriners Burn Institute

Notice:

Display shows °F only.

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

DANGER: Households with small children, disabled or elderly persons may require a 120°F (49°C) or lower

temperature setting to prevent contact with “HOT” water.

Maximum water temperature occurs while burner is on. To find water temperature being delivered, turn on a hot water faucet and place a thermometer in the water stream and read the thermometer. (See page 26 & 27 for more details.)

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

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

Notice: The factory setting allows operating temperatures between 100°F (38°C) and 120°F (49°C). Temperatures of 85°F (29°C) and above 120°F (49°C) can be achieved with the MAIN (UMC-117) remote control. Temperatures of 85°F (29°C) can be achieved with the Bath (USC-117 or USC2-117) remote control. Only qualified service personnel should perform this adjustment. Only factory authorized remote control(s) should be used.

* Temperatures 85°F(29°C) and above 120°F (49°C)

can be achieved with the Main (UMC-117) remote control. See page 34 & 35 for minimum and maximum temperature adjustment.

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

Page 5

DANGER!

NATURAL GAS AND LIQUEFIED PETROLEUM MODELS

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

● Water heaters utilizing LP gas are different

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

● No attempt should ever be made to

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

● LP appliances should not be installed below

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

Notice: If a gas leak is present or suspected:

● Do not attempt to find the cause yourself.

● Do not try to light any appliance.

● Do not touch any electrical switch.

● Do not use any phone in your building.

● Leave the building immediately and make

sure your family and pets leave also.

● Leave the doors open for ventilation and

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

● Stay away from the building until the

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

● Propane or LP gas must be used with great

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

● Before attempting to light the water heater,

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

● Gas detectors are recommended in LP

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

● It is recommended that more than one

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

Page 6

IMPORTANT SAFETY INFORMATION

READ ALL INSTRUCTIONS BEFORE USING.

WARNING!

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

FOR INSTALLATIONS IN THE STATE OF CALIFORNIA

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

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

Page 7

1” (2.5 cm) min

1” (2.5 cm)

min

1” (2.5 cm)

min

Coaxial Vent Pipe & Air Intake

Installing the water heater :

min. 1/2 "

min.

1/2 "

min. 12" (24" (61 cm) minimum is recommended for service)

min. 1"

(1.3 cm)

(2.5 cm)(2.5 cm)

(30 cm)

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

Location of Water Heater

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.

Minimum Clearance from

Combustible and

Non-Combustible

Construction.

Top = 12" (30 cm) Bottom = 12"

Front = 12" (30 cm) Back = 0"*

Side = 1/2" CoAxial Vent = 1"

* (with support bracket)

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

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

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

The pan must not restrict combustion air flow.

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

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

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

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

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

● The water heater should be installed as

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

● The water heater should be installed with

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

● A fire stop plate should be installed at every

penetration of a floor or ceiling if the vent is not running in a fire rated shaft.

● Failure to install and properly vent the water

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

● Long hot water lines should be insulated to

conserve water and energy.

● The water heater and water lines should

be protected from exposure to freezing temperatures.

● Do not install the water heater in

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

● Do not install water heater where subject

to vibrations.

● Do not install the water heater in

Recreational Vehicles, Mobile Homes, Boats and other Watercrafts.

● Do not install the water heater near vents

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

● Minimum clearance from combustible and

non-combustible construction is 1/2” (1.3 cm) sides, 0” rear (with support bracket); 12” (30 cm) from the bottom; 12” (30 cm) from the front of the water heater; and 12” (30 cm) from the top (24” [61 cm] from front and top is recommended for servicing purposes).

● Maintain a minimum clearance of

1” (2.5 cm) around the coaxial vent pipe to combustible or non-combustible construction, unless otherwise specified by vent manufacturer or installed in an enclosed space. If the clearances stated on the Instruction/Warning Label, located on the front panel of the heater differ, install the water heater according to the clearances stated on the label.

Page 8

Installing the water heater:

Manual Appliance

Gas Shut-off Valve

Wood Screw x 5pcs.

Wa sher x 4 pcs.

Use & Care Manual

Tankless Unit

FOR YOUR SAFETY!

—Do not store oruse gasoline or other

flammable vapors orliquids orother combustible materials in the vicinity of this or any otherappliance. To do so may result in an explosion orfire.

—WHAT TO DO IFYOU SMELLGAS

�Do not try to light any appliance.

� Do not touch any electrical switch; do not

use any phone in yourbuilding.

� Immediately call yourgas supplierfrom a

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

� If you cannot reach yourgas supplier, call

the fire department.

� Do not return to yourhome until authorized

by the gas supplierorfire department.

— Improperinstallation, adjustment,

alteration, service ormaintenance can cause property damage, personal injury, ordeath . Referto this manual. Installation and service must be performed by a qualified installer, service agency orthe gas supplier.

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

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

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

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

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

Recognize this symbol as an indication of Important Safety Information!

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

Use & Care Manual

With Installation Instruc tions for the Installer

Printed in USA

Water Heaters

Residential Gas

Warning: This waterheateris not suitable for

use in manufactured (mobile) homes!

Tankless

°F

PRIORITY

POWER

ON/OFF

Remote Control

Assembly Kit

)

50/30

( 1-78431PA

SELK

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RAW DET

IMIL STRAP RAEY 1

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SRETAEH

RETAW

fo etacifitreC

detimiL

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Wa rranty

Drain Tubing

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

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 contains 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.

Inspect Shipment

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

Page 9

The water heater must be installed with a 3”/5” diameter UL approved Category III Coaxial Stainless Steel

NO!

YES!

Vent Seam

downward slope

7/8" per foot

Ceiling

Vent Pipe

Wall Plates

Board

Inspection

Fire Stop

Access Panel #1

Inspection

Access

Panel #2

2’ (61 cm) Max.

94° Elbow

appliance coaxial vent pipe and an appropriate adapter.

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

WARNING: Use 3”/5” UL approved Category III Stainless Steel vent material only. No other vent material is permitted.

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

Venting

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

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

All coaxial vent components (adapters, pipe, elbows, terminals, etc.) should be UL 1738 Certified Stainless Steel Venting Material (e.g. AL29-4C).

The specified vent termination must be used. (Refer to pages 13 and 14 for an example of the concentric vent.)

Use the screws provided to connect the coaxial vent pipe with the anti-disconnection joint.

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

The unit can be vented either horizontally or vertically.

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

The maximum recommended unsupported span should be no more than five (5) feet (1.5 m). Support isolation hanging bands should be used. DO NOT use wire. (See diagram below).

Notes on pre-existing vent:

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

See the back page of this manual for additional requirements for the Commonwealth of Massachusetts.

Number

of 90°

elbows

(bends)

1 26’

2 24' 6"’

3 23"

4 21' 6"

Maximum

Length of

Straight

Pipe

(8.0 m)

(7.5 m)

(7.0 m)

(6.5 m)

Venting Lengths

MAXIMUM VENT LENGTH: The

system will not operate if there is excessive restriction (pressure drop) in the venting system. A maximum 26’ may be used provided there is only one 90° elbow in the system. If additional elbows are required: two elbows can be used with 24’ 6"

(7.5 m)

, three elbows can be used with

(7.0 m)

or four elbows can be used with 21

(6.5 m) of vent pipe.

A 90° elbow is equivalent to 1’6” (.5 m) of straight pipe. A 45° elbow is equivalent to 9” (.25 m) of straight pipe.

The vent termination does not count as straight pipe when determining total vent lengths.

The 94° elbow is equivalent to a 90° elbow.

The vent should be installed with a slight downward slope of 7/8” per foot of horizontal run toward the vent terminal (see diagram below). This ensures that any

(8.0 m)

of vent pipe

23’

’

condensate formed during operation of the unit is evacuated from the appliance and to prevent rain from entering the appliance.

An upward slope toward the vent terminal is not acceptable for horizontal venting.

MINIMUM VENT LENGTH: The venting may be as short as 12” (30 cm), provided one vent termination is installed to the outdoors through a sidewall, one 94° elbow is included in the installation and the wall plates are installed.

Notice: Make sure that the seam of the inner vent pipe in horizontal runs is toward the top of the installation (see diagram to the far left).

Page 10

Installing the water heater:

downward slope

7/8" per foot

Ceiling

Vent Pipe

Wall Plates

Board

Inspection

Fire Stop

Access Panel #1

Inspection

Access

Panel #2

2’ (61 cm) Max.

94° Elbow

Appliance Vent Adapter

Water Heater

Exhaust

Flow

Collar

Venting Through Closed Spaces

If the coaxial vent piping passes through a closed space, a minimum clearance of 1” (2.5 cm) when installed horizontally or 6” installed vertically should be maintained between the coaxial vent pipe and combustibles and noncombustibles. Be sure to follow local codes and vent manufacturer’s installation instructions.

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

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

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

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

be provided every 10 ft (3 m).

(15 cm)

when

CAUTION: Ensure that

the appliance vent adapter is securely attached to the water heater collar.

CAUTION: Condensate is known to be acidic; refer to local, state (provincial) or federal codes for proper handling and discharge methods.

CAUTION: Condensate must drain away from the water heater and should not be allowed to drain back into any part of the vent system.

WARNING: Failure to provide a vent condensate drain close to the appliance could allow acidic flue gas condensate to enter into appliance flueways, causing

premature failure of the appliance.

Appliance Vent Adapter

The water heater must be installed with a UL 1738 approved Category III Stainless Steel appliance coaxial vent adapter.

Read the following instructions before installation.

● Test fit the adapter over the water heater

collar before proceeding.

Draining the Condensate

Provision should be made to collect and dispose of condensate from venting systems.

When a water heater is vented horizontally, the vent pipe can have a DOWNWARD or UPWARD slope towards the termination. If an UPWARD slope is used, a condensate trap must be installed as close as practical to the water heater in order to prevent condensate from draining back into the water heater. See Examples A and B on page 13 and 14 for DOWNWARD and UPWARD slope for horizontally vented water heaters.

● Slide adapter end “A” down over heater

collar “B” as far as it will go.

● Use the screws provided with the vent

adapter to attach the adaptor to the heater collar.

NOTICE: Follow the appliance coaxial vent adapter manufacturer’s instructions.

When a water heater is vented vertically, an UPWARD slope must always be used. A condensate trap must be installed in the horizontal section of the vent and as close as practical to the water heater in order to prevent condensate from draining back into the water heater. See the diagram on page 14 showing UPWARD slope for vertically vented water heaters.

Always attach a drain hose to the drain fitting and plumb the hose to a sanitary sewer drain.

A high temperature silicone tubing suitable for use with acidic condensate and appropriate for the temperature range should be used.

The drain tube is fashioned into a “pigtail” trap and must be filled with water to prevent flue gases from emitting into the building prior to operating the appliance.

Page 11

FIXED CLOSED

ERA

FIXE

CLOSED

VENT TERMINAL

AIR SUPPLY INLET

AREA WHERE TERMINAL IS NOT PERMITTED

Horizontal Vent Terminal Location

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

Canadian Installations

US Installations

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.

12 inches (30 cm) above anticipated

snow level.

6 inches (15 cm) for appliances < 10,000

Btuh (3 kW), 12 inches (30 cm) for

appliances > 10,000 Btuh (3kW) and <

100,000 Btuh (30kW), 36 inches (91 cm)

for appliances > 100,000 Btuh (30kW).

* *

12 inches (30 cm) above anticipated

snow level.

6 inches (15 cm) for appliances <

10,000 Btuh (3 kW), 9 inches (23 cm)

for appliances > 10,000 Btuh (3kW)

and < 50,000 Btuh (15kW), 12 inches

(30 cm) for appliances > 50,000 Btuh

(15kW).

D= Vertical Clearance to ventilated

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

* *

the terminal.

E= Clearance to unventilated soffit.

F= Clearance to outside corner.

G= Clearance to corner.

H = Clearance to each side of center line

extended meter/regulator assembly. above

3 feet (91 cm) within a height 15 feet

(4.57 m) above the meter/regulator

I = Clearance to service regulator

coaxial vent outlet.

J = Clearance to nonmechanical air

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

6 inches (15 cm) for appliances <

10,000 Btuh (3 kW), 12 inches (30 cm)

for appliances > 10,000 Btuh (3kW)

and < 100,000 Btuh (30kW), 36 inches

(91 cm) for appliances > 100,000 Btuh

K = Clearance to mechanical air supply

inlet.

L = Clearance above paved sidewalk or

paved driveway located on public property.

M = Clearance under veranda, porch,

deck or balcony.

1 In accordance with current CSA-B149.1 Installation Codes. 2 In accordance with current ANSI Z223.1/ NFPA 54 National Fuel Gas Code. † A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings. * For clearances not specified in ANSI 223.1/NFPA 54 or CSA-B149.12, one of the following shall be indicated: a) A minmum clearance value determined by testing in accordance with section 2.20, or; b) A reference to the following footnote: "Clearance in accordance with local installtion codes and the require ments of the gas supplier."

* *

assembly.

3 feet (91 cm) *

6 inches (15 cm) for appliances < 10,000

Btuh (3 kW), 9 inches (23 cm) for

appliances > 10,000 Btuh (3kW) and <

50,000 Btuh (15kW), 12 inches (30 cm)

(30kW).

6 feet (1.83 m)

7 feet (2.13 m)† *

for appliances > 50,000 Btuh (15kW).

3 feet (91 cm) above if within 10 feet

(3 m) horizontally.

Not Allowed Not Allowed

Page 12

Installing the water heater:

Additional Considerations

Indoor Water Heater

Caulk

Rising moisture will collect under eaves.

If soffit vent is too close, block off and install new vent at another location.

Inside Corner

Caulk

6’ (1.8 m)

Caulk Zone

4’

(1.2 m)

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

WARNING: For multiple unit installation, a minimum

distance between vent terminations must be maintained to prevent recirculation of vent gases. Maintain a center-to-center distance between vent terminations of 19 inches (48 cm) for two unit installation. Maintain a center-to-center distance between vent terminations of 21 inches (53 cm) for three or more unit installation.

6’

(1.8 m)

6’ (1.8 m) Caulk zone or to edge of window etc.,starting within 6’ (1.8 m).

RTV silicone caulk

1 ft. sq. (30 x 30 cm) sheet metal plate on brick or masonry surface, recommended.

Caulk

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 build ing with prevailing winter winds.

To help prevent water lines from freezing, do not locate vent

terminal on the side of a building with prevailing winter winds.

Do NOT terminate vent directly on brick or masonary surfaces. A

rust resistant sheet metal backing plate (1x1 foot) (30x30 cm) is recommended behind vent. See figure on left.

Do Not locate vent terminal too close to shrubbery, as flue gases

may damage them.

Caulk all cracks, seams and joints within six (6) feet (1.8 m) of

vent terminal.

Caulk around wall face plate for weather tight seal.

All painted surfaces should be primed to lessen the chance of

physical damage. Painted surfaces will require maintenance.

Insulate vent pipe of water heaters exposed to cold conditions

(attics, crawl spaces, etc.) with inflammable material to help prevent moisture from accumulating in the vent pipe. The insulation should be rated for the temperature and should not contain substances that corrode the vent pipe.

Do NOT extend exposed vent pipe of indoor water heaters outside

of building.

Guard vent against accidental contact with people and pets.

Page 13

Installing the water heater:

94° Elbow

Outer W a l l

Inner W a ll Plat e

W a ter

Heater

Outside W a ll

Side V i ew

Caulk fo r

weather seal

Inner W a ll

Outer Wall Plat e

Vent Pipe

Mounting Brackets

Appliance

Vent Adapter

downward slope

7/8" per foot

Ceiling

Vent Pipe

Wall Plates

Board

Inspection

Fire Stop

Access Panel #1

Inspection

Access

Panel #2

2’ (61 cm) Max.

94° Elbow

Horizontal Vent Installation continued.

Use 4 hollow wall anchors, at least 1/8 inch (0.32 cm) in diameter and of appropriate length for the thickness of the sheathing, if sheathing is particle board or other composite material.

Use 4 #10x1-1/4” wood screws for plywood, solid wood sheathing or members. Use suitable masonry anchors when passing through solid masonry walls. Reinstall the decorative sheathing around the faceplate. This assembly may be painted to match the exterior decor.

Apply silicone sealant or silicone/latex caulk around the vent section where it passes through the plate and around

Side View

WARNING: Use UL approved Category III vent material only. No other vent material is permitted.

CAUTION: Follow the vent manufacturer’s installation instructions as design might vary from manufacturer to manufacturer.

the plate where it is attached to the structure. This will provide a weather seal to keep moisture outside the building. Ensure a sufficient seal is made. Now attach the female end of the air intake tee to the male end of the 3”/5” concentric vent pipe.

Push firmly on the air intake tee until the outer jacket has made contact with the snap ring located on the male end of the 3”/5” concentric vent pipe section. When fully assembled the outer female end will overlap the male end 1 inch (25.4 mm).

Install the appliance adapter onto the appliance and use (4) four screws to secure the appliance adapter to the appliance. Now attach other required vent and air intake material between the appliance adapter and the horizontal vent termination.

Maintain the proper clearance between the vent pipe and combustible or noncombustible material as required by the vent manufacturer.

There is a 1" (2.5 cm) minimum clearance required between air intake pipe and combustible or non combustible material.

Proper support be provided for the vent and air intake pipes as mentioned in the venting section.

Support method used should isolate the vent pipe from floor joist 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.

Use the self-tapping screws provided with the vent kit to connect the two outer pipes.

Seal the over lapping area of the outer pipe (5” concentric pipe) with a thick bead of caulk.

Example A: Typical Horizontal Termination

w/ 7/8” per foot DOWNWARD Slope

Page 14

Installing the water heater:

Chase Requires

6" (15 cm) Clearance

to Combustibles

Firestop

Roof Jack

Adjustable Roof Flashing

Vent Adapter

1" (2.5 cm) Clearance

Support Hanger

Condensate

Tr ap

To Drain. Dispose of

condensate in accordance

to local codes

Storm

Collar

Support

Clamp

1/4" per foot upward slope

(61 cm)

Max

Vertical Te rmination Adapter

Air Intake

3“/ 5” Concentric Pipe

Vertical Vent Termination Location

Only Rheem approved termination and parts should be used during installation.

Vent Pipe Through Roof

Min. 12"

(30 cm)

Min. 12"

(30 cm)

Max. 24"

(60 cm)

Min. 18" (46 cm) Above Roof for installations in Canada.

Above Roof

Above Anticipated Snow Level.

Above Roof (Without Additional Support)

Vertical Vent Installation

The location of the vent terminal depends on the following

minimum clearances and considerations (see diagram at left):

Minimum twelve (12) inches

(30 cm)

above roof.

above anticipated

snow level.

Maximum twenty-four (24) inches

(60 cm)

above roof level

without additional support for vent.

Four (4) feet

(1.2 m)

from any gable, dormer or other roof structure with building interior access (i.e., vent, window, etc.).

Ten (10) feet

Any fresh or make-up air inlet such as a dryer or furnace area is considered to be a forced air inlet.

For installations in Canada 18" (45.7 cm).

For installations in Canada 6' (1.8 m)

(3 m)

from any forced air inlet to the building.

Notice: Only Rheem approved termination and parts should be used during installation.

Notice: Follow vent manufacturer’s installation instructions and their recommended clearances to combustibles as required.

A fire stop plate should be installed at every penetration of a floor or ceiling if the vent is not running in a fire-rated shaft. Maintain the recommended air space clearance to combustible materials and building insulation.

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 water heater vent collar outlet. Support

vertical or horizontal runs as previously mentioned. If required, use silicone sealant at the point the vent connector joins the water heater.

Install adequate flashing where the vent pipe passes through the roof. Determine the vent terminal height and install the vent pipe accordingly. Refer to the diagram above for proper vent terminal height.

The vent roof system must terminate at least 1 foot (30 cm) above the roof line and at least 2 feet (61 cm) higher than any portion of the building within 10 feet (3 m).

Install supports every 5 feet (1.5 m) vertically along the vent pipe route. Vertical supports are required after every transition to vertical and are required after every offset elbow. When the vent is free-standing and penetrates a roof/ceiling, another means of support must be used at a second location.

Follow the vent manufacturer’s recommended installation instructions provided with the vent purchased from the manufacturer.

Standard Vertical Vent Termination

Detail of

condensate trap.

Page 15

Bracket

Adjustment Screws

TOP

BOTTOM

Upper Bracket

Washer

Wood Screw

Lower Bracket

1/8" (.32 cm)

Clearance

CAUTION: Reinforcement of the wall is required in case the wall is not strong enough to hold the appliance.

The image above may differ in appearance from your water heater.

Mounting the Water Heater

Make sure the location of the appliance allows for easy access and operation.

Wall studs should be utilized when mounting the water heater to the wall. Alternately, a suitable piece of wood may be placed inside or outside of the wall to span the distance between the wall studs. Fasten the water heater mounting brackets to the wood.

In case of dry wall or concrete wall, use drywall anchors or lag bolts.

The water heater requires 120VAC/60Hz. Have a receptacle with ground terminal near the water heater. The length of the power supply cord is 6 feet (1.8 m).

Install a wood screw for the upper bracket with a clearance of 1/8” (.32 cm) between the wall and the screw head. Hang the center of the upper bracket on the screw.

Using a wood screw and a washer, affix the

Thermal Expansion

A thermal expansion tank will be required if the water heater is installed in a closed loop system to prevent damage to heater, related piping and relief valve. Replacing the relief valve will not correct the problem! The expansion tank is designed with an air cushion built in that compresses as the system pressure increases, thereby relieving the over pressure

lower bracket to the wall (Left and Right). Repeat to affix the top bracket.

The brackets can be adjusted to change the distance between the back of the appliance and the wall within the range of 3/8” (.95 cm) to 1-1/2” (3.8 cm).

Loosen the adjustment screws of both the top and the bottom brackets to adjust the distance (See diagram below).

The image above may differ in appearance from your water heater.

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.

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 water connections on heater. Any heat applied to the water supply fittings will permanently damage the internal components of the water heater.

Notice: Due to cold enviroments, ice may potentially accumulate at the water connections. In this case, please insert the power cord of the water heater into an electrical outlet. The ice should melt withing approximately 10 minutes and at this time the water connections can be made.

Water Supply Connections

Plumbing should be carried out by a qualified plumber in accordance with local codes.

Use approved plumbing materials only.

The diameter of the pipe lines should be a minimum of 3/4”.

To conserve energy and to prevent freezing, insulate both cold and hot water supply lines. DO NOT cover the drain or pressure relief valve.

To ensure proper operation of the water heater, the following water pressure guidelines should be followed:

● Operation of the water heater requires the

minimum water pressure of 14 psi (97 kPa) and a minimum water flow rate of 0.66 gpm (2.5 lpm).

● A water pressure of 40 psi (276 kPa) is

required to achieve maximum flow rate.

● To maintain proper performance, ensure

sufficient water supply pressure. The

Required Water Pressure = Min. Operating Water Pressure (14 psi [97 kPa]) + Pipe Pressure Loss + Faucet and Shower Pressure Loss + Safety Margin (more than 5 psi [34 kPa]).

● To supply hot water to upper floors,

additional water pressure (0.44 psi/ft [10 kPa/m]) must be ensured. The measurement should be calculated by the distance between the water inlet of the water heater (ground level) to the hot water faucet (upper floor level).

● Well water systems should be set to ensure

a minimum system pressure of 40 psi (276 kPa). The pressure should remain stable during the operation of the water heater.

● When the water is supplied from a water

supply tank, the height of the tank and the diameter of the pipes and their relation to water pressure should be taken into consideration. Gravity water pressure is not recommended.

Page 16

Installing the water heater:

Wa ter Filter

Check Valve

Wa ter Inlet

Clean the Wa ter Filter

Wa ter

Nipple

Air

Relief

Va lve

Hot

Wa ter

Ta p

Drain Valve

Water Supply Connections, continued

CAUTION: This water heater must only be used with the following water supply system conditions:

● With clean, potable water

free of corrosive chemicals, sand, dirt or other contaminates.

● With inlet water

temperatures above 32°F (0°C), but not exceeding 120°F (49°C).

● Free of lime and scale

deposits.

● DO NOT reverse the hot

and cold water connections. The water heater will not operate.

Notice: Use only teflon tape on cold and hot water connections and lines.

Notice: If the water flow resistance of a

shower head is too high, the burner in the water heater will fail to ignite. Keep the shower head clean from debris that could cause additional pressure drop.

Notice: If using mixing valves on the outlet, choose one that prevents cold water pressure from overcoming hot water line pressure.

Notice: If multiple water heaters are installed in a manifold system, the water piping must be in “Parallel”. A water pressure of 40 psi (276 kPa) is recommended for each water heater for proper operation of the water heaters.

Alternate Water Piping Arrangement with Optional Valve Kit

Valve kits may be purchased and installed as optional items. Contact your distributor or place of purchase for details.They allow for one person full diagnostic testing and ease of flushing the system. The kit includes two full port isolation valves, one for the cold side and one for the hot side. Refer to page 22.

Install a shutoff valve near the inlet of the water heater for service and draining purposes.

It is not recommended to use pipes with smaller diameters than the water supply connection of the water heater.

Before connecting the water supply pipe to the water heater, open the shutoff valve and clean out sand, debris, air, caulking material, etc. inside the pipe. Connect to the water inlet, then check water flow. Close the shutoff valve and clean the water filter.

Be sure to connect the water inlet and the hot water outlet as shown on the water heater. If reversed, the water heater will not function.

Installation of unions or flexible copper connections are recommended on the HOT and COLD water lines, so that the water heater may disconnect easily for servicing, if necessary.

Install a Check Valve between the water heater and the water shutoff valve (see the top left diagram).

The following should be addressed in regards to the HOT WATER OUTLET:

● Connections between the water heater

and point(s) of use should be as short and direct as possible.

● Local codes shall govern the exact type

of pipe material to be used for water connections.

● To conserve energy and minimize heat

loss, insulation of hot water piping is recommended (see Hot and Cold Pipe Insulation Installation on page 23).

Notice: The flow rate of hot water may vary when more than two faucets (appliances, fixtures, etc.) are being used simultaneously.

Notice: The pipes MUST be completely drainable. If the hot water faucets are located at a point higher than the water heater, place a drain valve at the lowest point (see diagram at the left).

This appliance is not intended for space heating application. Do not connect this heater to waterlines previously used for space heating or non-potable water distribution. All water piping and components shall be suitable for potable water.

Page 17

Relief Valve

Pressure Relief Valve

Discharge

Water

Shutoff

Drain

Valve

Hot Water

Supply

Union

Outlet

Drain Tube to suitable

drain

Cold Water Supply

Inlet

Line

Drain Valve

shown on

right without

tubing.

Notice: The above illustrates a pressure-only relief valve. If local codes require a combination temperature and pressure relief valve be installed, an extension piece may be needed to ensure that the valve probe is not directly in the flow path of the water.

A new pressure relief valve, complying with the Standard for Relief Valves and Automatic Gas Shut-Off Devices for Hot Water Supply Systems, ANSI Z21.22/ CSA 4.4, must be installed at the hot water outlet connection of the water heater at the time of installation. Local codes shall govern the installation of relief valves.

For safe operation of the water heater, be sure that:

● The pressure rating of the relief valve

must not exceed 150 psi (1034 kPa), the maximum working pressure of the water heater as marked on the rating plate.

● The BTUH rating of the relief valve must

equal or exceed the BTUH input of the water heater as marked on its rating plate.

● No valve of any type should be installed

between the relief valve and the water heater

● Discharge from the relief valve should

be piped to a suitable drain to eliminate potential water damage. Piping used should be of a type approved for the distribution of hot water.

● Hot and cold water lines should be

insulated up to the water heater. Refer to page 23 for details.

● The discharge line must be

NO SMALLER than the outlet of the relief valve and must pitch downward 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.

Notice: Local codes govern the installation of relief valves. If local codes require that a temperature and pressure relief valve should be installed, the manufacturer recommends a type 40XL Watts T&P relief valve or an equivalent model be used.

Notice: Manual operation of relief valves should be performed at least once a year. Turn off the electrical power and gas shutoff valve. Lift and release lever on the relief valve and check the manual operation of the relief valve. You should take precaution to avoid contact with the hot water coming out of the relief valve and to prevent water damage.

Notice: If the relief valve on the system discharges periodically, a problem exists and service to the water system is required.

The vinyl tubing as shown is supplied and connects to the drain valve located at the hot water outlet as shown in the diagram at left. Route the other end of the vinyl tubing to the drain pan or a suitable drain where leakage from the heater will not result in damage to the area adjacent to the heater or to lower floors of the structure.

Page 18

Installing the Main Remote Control:

Manual

Gas

Supply

Line

Shutoff

Manual Gas

Appliance

Shutoff

Union

Sediment Trap

Cap

(Valve)

(Supplied)

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 supplied Manual Gas Appliance Shutoff Valve must be installed at the gas connection of the water heater at the time of installation (see diagram to the left).

The branch gas supply line to the water heater should be a minimum of 3/4” 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) ANSI Z223.1 and CAN B149 code mandates a manual gas shut-off valve: See NFGC & B149 for complete instructions.

A sediment trap should be installed at the bottom of the gas line.

Do not use excessive force (over 31.5 ft lbs. [42.7 Nm]) in tightening the pipe, particularly if teflon pipe compound is used, as the unit may be damaged.

The inlet gas pressure to the water heater must not exceed 10.5” w.c. (2.6 kPa) for natural or 14” w.c. (3.5 kPa) for LP gas. 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.

WARNING: Install a gas pressure regulator, in the gas supply line, which does not exceed the maximum supply pressure.

DO NOT use an industrial type gas regulator.

If flexible connectors are used, the maximum length shall not exceed 36” (91 cm).

If lever type gas shut offs are used, they shall be T-Handle type.

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.

NOTICE: To ensure proper operation of the heater the gas pipe and gas meter must be sized correctly.

Gas piping shall be in accordance with local, utility company requirement and/or in the absence of local codes, use the latest edition of the National Fuel Gas Code. In Canada, the latest edition of CSA B149.1 Natural Gas and Propane installation code.

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 gas shut-off valve(s) to 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 should also be leak tested after the water heater is placed in operation.

Pressure Testing the Gas Supply System

The water heater and its manual gas shutoff valve must be disconnected from the gas supply piping system during any pressure testing of the system at pressures in excess of 1/2 psi (14” w.c. [3.5 kPa]).

The water heater must be isolated from the gas piping system by closing the manual gas shut-off valve during any pressure testing of the gas supply piping at pressures equal to or less than 1/2 psi (14” w.c. [3.5 kPa]).

High Altitude

This water heater is certified for installations up to 3,280 feet (1000 m) above sea level. The 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.

NOTICE: For installations above 3,280 feet (1,000 m) elevation, contact a quailified service technician to make the proper altitude adjustment. See page 35 for additional information.

Do not install this water heater at elevations above 3,280 feet (1,000 m) without the proper adjustement. Please contact your installer, local gas supplier, place of purchase or the Customer Service phone number as listed in this Use & Care Manual for more information.

Page 19

WARNING: Field wiring connections and electrical grounding must comply with local codes, or in

°F

PRIORITY

POWER

ON/OFF

MAIN

Control

Base Plate

Control screw

Mounting Screw x 2

the absence of local codes, with the latest edition of the National Electrical Code, ANSI/NFPA 70, or in Canada, Canadian Electrical Code, CSA C22.1 Part 1.

Remote Control Installation

NOTICE: The provided remote control will allow a maximum temperature setting of 120°F (49°C). Temperatures of up to 140°F (60°C) can be achieved with the MAIN (UMC-117) remote control. Only qualified service personnel should perform this adjustment.

NOTICE: An optional cable (EZ Link Cable™) can be purchased separately to manifold two heaters together.

One (1) remote control is provided with the water heater. Additional remote controls may be purchased separately. Up to three (3) remote controls can be used with this water heater.

The following are considerations for determining the location of the remote control(s):

● DO NOT install any remote control

outdoors or in areas where it can come in contact with water.

●

Place remote control out of children’s reach.

●

The remote control can be installed in convenient locations such as the kitchen, laundry room, utility room, or directly beside the water heater.

● Avoid areas where the remote control may

be exposed to heat, e.g. ranges or heaters.

● Avoid areas where the remote control

Remote

Control

Model

Number

Remote Control

Description

may be subjected to oil and/or steam from cooking.

● Avoid areas where chemical agents (such

as thinner, benzine and alkalines) are used.

● Avoid areas of direct sunlight.

● The MAXIMUM distance between the water

heater and the remote control installation location is limited to 195 feet (59 m) of wire.

NOTICE: Only one of each type of remote controls can connect to the water heater. Therefore, a maximum of three controls can connect to the water heater.

No other manufacturer’s controls are suitable for use with this water heater.

DO NOT attempt to disassemble the remote control.

Temperature

Set Point

Availability

Range

NOTICE: If a manifold system is installed, the main remote control connected to the manifold controller (MIC-180) has priority over the remote controls connected to the water heater.

USC1-117 BATH 1

USC2-117 BATH 2

UMC-117 MAIN

MIC-180 Manifold

Manifold

System

100°F–120°F

(38°C)–(49°C)

85°F (29°C)

100°F–120°F

(38°C)–(49°C)

85°F (29°C)

100°F–120°F

(38°C)–(49°C)

85°F (29°C)

125°F–140°F

(52°C)–(60°C)

Optional (Sold

Separately)

Qualified Technician

Adjustment

Optional (Sold

Separately)

Qualified Technician

Adjustment

Factory Default

Qualified Technician

Adjustment

Optional (Sold

Separately)

Page 20

Installing the Main Remote Control:

Remote Control

Projections

Suitable

W a ll Anchors

Base Plate

Screws

Control

Screw

Extension

Cable

W a ll

Penetration

WARNING: Field wiring connections and electrical grounding must comply with local codes, or in the absence of local codes, with the latest edition of the National Electrical Code, ANSI/NFPA 70, or in Canada, Canadian Electrical Code, CSA C22.1 Part 1.

Remote Control Installation

NOTICE: Extension cable can be any Type-T 18 AWG wire similar to a thermostat wire and need not be polarity sensitive.

Do Not apply sealant to the remote control cable.

It is not recommended to have wiring exposed.

Remote Control Connection Cover

Remote Control Connection Terminals

Gas Valve

Connecting the MAIN (UMC-117 ) remote control to the water heater:

● Drill a 1” (2.5 cm) to 1-1/2” (3.8 cm) hole

at the proposed control location.

● Install the extension cable between the

location of the remote control and the water heater.

● Remove the base plate from the control.

● Feed the remote control extension cable

through the central hole in the base plate.

● Fix the base plate to the wall using

suitable screws and wall anchors. Ensure the projections on the base plate are pointing upward.

● Connect the remote control cables to the

extension cable from the water heater.

● Place the remote control over the

base plate. Ensure the projections in the base plate fit into the housings in the remote control.

● Fix the control to the base plate at the

bottom of the remote control using the screw provided.

● Proceed to “Connecting the remote

control to the water heater”, to complete installation.

Connecting the remote control to the water heater:

● Ensure that the power to the water heater

has been disconnected.

● Loose the 3 screws located on the remote

control connection cover made of white plastic (see the diagram on the left top).

● Connect the remote control extension

cables from the remote control with the remote control connection terminals (see the diagram on the left bottom).

NOTICE: The remote control wire connection terminals are not polarity sensitive.

● Firmly tighten the terminal screws.

● Secure the remote control extension cable

on the hook located on the side of the remote control connection base.

● Tighten the 3 screws and attach the remote

control connection cover to the water heater.

● Switch on the power supply to the water

heater.

● Ensure proper operation of the remote

control and water heater.

Remote Control Connection Cable

Page 21

WARNING: Field wiring connections and electrical grounding must comply with local codes, or

CONTROL

BATH

CONTROL1

CONTROL2

BK:BLACK

BR:BROWN

R:RED W:WHITE

GY:GRAY

O:ORANGE Y:YELLOW

G/Y:GREEN/YELLOW

REMOTE

(UMC-117)

(USC1-117)

(USC2-117)

WIRING DIAGRAM

CIRCUIT

BOARD

3 2

W W

OFF

234

D E

MOTOR

R Y OWBR

SW2

SW1

SW3

MAIN

W W

Q P

OFF

234

MAX

BUTTON

ADJUSTER

BUTTON

MIN

BUTTON

DIP SWITCH2

DIP SWITCH1

31-92028 0

R Y O

MOTOR

R Y OWBR

BR BK

GND

456

SV0

SV1

SV2

SV3

G/Y

23456

W Y R

PSV

( )

COLOR CODE

WRBK

AMBIENT AIR THERMISTOR

WATER INLET THERMISTOR

HEAT EXCHANGER THERMISTOR

OUTLET HOT WATER THERMISTOR

CONTROL MOTOR

WATER VOLUME

WATER BY-PASS CONTROL MOTOR

PROGRAM CHIP

FLAME ROD1

CONNECTOR FOR CHECKING THERMOELECTROMOTIVE FORCE

FA N MOTOR

THERMOCOUPLE

SOLENOID VALVE 3

SOLENOID VALVE 2

SOLENOID VALVE 1

GAS INLET SOLENOID VALVE 0

GND

RESISTOR

ELECTRODE

IGNITER

ANTI-FROST HEATER

120V

FUSE(3A)

OVER HEAT LIMITER

WATER FLOW SENSOR

P.G.F.R VALVE

LED

LIMITER LIMITER

BL:BLUE

G:GREEN

G/YorG

BL BL

G G

BL BL

GG BL BL

USUALLY DISCONNECTED

4 3 2

in the absence of local codes, with the latest edition of the National Electrical Code, ANSI/NFPA 70, or in Canada, Canadian Electrical Code, CSA C22.1 Part 1.

Electrical Connection

WARNING: Shock hazard line voltage is present. Before servicing the water heater, turn off the electrical power to the water heater at the main disconnect or circuit breaker. Failure to do so could result in severe personal injury or death.

CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify correct operation after servicing.

POWER CORD:

● The electric power supply requirement

for this water heater is 120 VAC/60HZ, 2 Amps.

● The water heater comes with a three (3) pin

power supply cord. Use only a power outlet with a ground terminal.

● The installation of an GFCI (Ground Fault

Circuit Interrupter) is recommended.

● Keep any excess of the power supply cord

on the outside of the water heater.

● If local codes require hardwiring, see

instructions for “Hardwiring the Electrical Connections”.

HARDWIRING THE ELECTRICAL CONNECTIONS:

● Wiring should be carried out by a qualified

electrician in accordance with local codes.

● The water heater requires 120 VAC/60Hz and

should be properly grounded.

● DO NOT connect grounding wire to water

pipes, gas pipes, telephone cables, lightning conductor circuits and to grounding circuit of other equipment that carry a ground-fault interrupter.

● An ON/OFF switch must be provided and

installed for the incoming 120VAC power.

● Wire the water heater exactly as shown

below. A wiring diagram is also found inside of the cover panel.

● A green screw is provided in the enclosure

for a grounding connection.

● Connect the live wire to black leg wire and

the neutral wire to the white neutral wire.

Page 22

Installing the water heater:

Wall Plate

Outside Wall

With Protective

Vent Termination

Screen

94° Elbow

Vent Adapter

Power

Supply

Cord

7/8” Per Foot Downward Pitch

Discharge

Line

To Hot Water

Faucet(s)

Relief Va lve

Union

Drain Valve

Cold Water

Supply

Shut-of

Va lve

Check

Va lve

Water Filter

Drain V

alve

Drain Hose

(To Suitable Drain)

Manual Gas

Appliance

Shut-off

(supplied)

Sediment

Tr ap

Manual

Gas Supply Line

Shut-off

Va lve

Union

Cap

6” (15 cm) Air Gap

V a cuum Relief V a lve

(Not Supplied)

If required, install per local codes

and valve manufacturer’s

instructions.

¥F

PRIORITY

POWER

ON/OFF

Remote Control

Typical Installation of Water Heater (Venting Required)

Alternate Water Piping Arrangement

NOTICE: The National Fuel Gas Code (NFGC) and B149 mandates a manual gas shut-off valve: See NFGC/B149 for complete instructions. Local codes or plumbing authority requirements may vary from the instructions or diagrams provided and take precedent over these instructions.

with Optional Valve Kit

Hot Water Service Valve

Pressure Relief Valve

Drain

Water Outlet

Water Inlet

Cold Water

Service Valve

Page 23

WARNING: If local

Water

Outlet

Drain

Pressure Relief Valve

Drain Valve

Hot Water Service Valve

Water Inlet

Cold Water

Service Valve

codes require external application of insulation blanket kits the manufacturer’s instructions included with the kit must be carefully followed.

NOTICE: The hot and cold pipes should be insulated as shown to provide additional freeze protection.

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 does not store water 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 air inlet, flue outlet or

operating and warning labels attached to the water heater or attempt to relocate them on the exterior of insulation blanket.

Hot and Cold Pipe Insulation Installation

WARNING: In case the pipe insulation is not rated for the appropriate weather conditions install electric heat tracing or equivalent to prevent freezing of the pipes. Do not insulate or block drain valve on the hot outlet fitting. If the pipes are allowed to freeze, the water heater and the pipes may malfunction or leak due to freezing water.

Pipe Insulation

For increased energy efficiency, use pipe insulation. Please install the insulation according to the diagram above, making sure

to insulate all the way to the top. Do not cover any drain or pressure relief valve(s).

During Installation of this water heater…

Do’s

❑ Do follow all installation instructions

covered in this manual.

❑ 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 & Care Manual and the National Fuel Gas Code (CSA B149 in Canada).

❑ Do maintain proper clearances to

combustibles and non-combustibles as specified on the nameplate.

❑ Do ensure that the venting system complies

with the guidelines found in the Use & Care Manual and National Fuel Gas Code (CSA B149 in Canada).

❑ Do contact local gas company to ensure gas

meter and gas piping are adequately sized.

❑ Do use teflon tape on water line

connections and fittings.

Don’ts

❑Don’t block or restrict Air Intake

Openings.

❑ Don’t remove the front cover unless

absolutely necessary. This should only be done after being examined by a qualified service technician.

❑Don’t install this product where standing

water may occur.

❑Don’t use pipe dope on water line

connections and fittings.

Page 24

Installing the water heater:

Installation Check List

A. Indoor Water Heater Location

❑

 Close to area of vent termination.

 ❑ 

Indoors and protected from freezing temperatures.

 ❑

Proper clearance from combustible surfaces observed.

 ❑ 

Sufficient fresh air supply for proper operation of water heater.

 ❑ 

Air supply free of corrosive elements and flammable vapors.

 ❑

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 heater and vent piping.

 ❑

Water heater is properly attached to the wall.

B. Water Supply

 ❑

Water supply has sufficient pressure.

 ❑

Air purged from water heater and piping.

 ❑

Water connections tight and free of leaks.

 ❑

Water filter is clean and in place.

 ❑

Materials used are as instructed in this manual.

 ❑ 

Water pipes are insulated and protected from freezing.

C. Gas Supply

 ❑

Gas type matches rating plate.

 ❑

Gas supply pressure is sufficient for the water heater.

 ❑ 

Gas line equipped with shut-off valve, union and sediment trap.

 ❑

Approved pipe joint compound used.

 ❑ 

Soap and water solution used to check all connections and fittings for possible gas leak.

 ❑

Gas Company inspected installation (if required).

D. Relief Valve

 ❑ 

Pressure Relief Valve properly installed and discharge line run to open drain.

 ❑

Discharge line protected from freezing.

E. Co-Axial Venting

 ❑ 

Vent pipe material should be category III and meet UL1738 in US and ULC S636 in Canada.

 ❑ 

Connector(s) pitched (1/4” per foot of length minimum) DOWNWARD or UPWARD to termination. If UPWARD, a condensate trap must be installed close to the heater. See page 13 and 14.

 ❑ 

Connector(s) securely fastened together with high temperature silicone (500°F [ air-tight.

 ❑

All co-axial vent runs are properly supported.

 ❑

Vent terminal is properly installed.

 ❑

Sufficient combustion air is available.

 ❑

Maximum and minimum vent lengths are observed.

F. Electrical Wiring

 ❑

Voltage matches rating plate.

 ❑

Water heater is properly grounded.

 ❑

Supply cord and/or wiring meets all local codes.

260°C])

and

Page 25

Lighting the water heater:

WARNING

: If you do not follow these instructions exactly, a fire or explosion may result

causing property damage, personal injury or loss of life.

FOR YOUR SAFETY READ BEFORE OPERATING

1.STOP! Read the safety information above on this label.

2.Turn off all electric power to the appliance.

3.Do not attempt to light the burner by hand.

4.Turn the Gas Shutoff Valve located on the outside of the unit clockwise to the "OFF" position.

5.Wait five (5) minutes to clear out any gas. If you then smell gas, STOP! Follow "B" in the safety information above on this label. If you don't smell gas, go to the next step.

6.Turn the Gas Shutoff Valve located on the outside of the unit counterclockwise to the "ON" position.

7.Turn on all electric power to the appliance.

8.If the appliance will not operate, follow the instructions "To Turn Off Gas To Appliance" and call your service technician or gas supplier.

TO TURN OFF GAS TO APPLIANCE

1.Turn off all electric power to the appliance if service is to be performed.

2.Turn the Gas Shutoff Valve located on the outside of the unit clockwise to the "OFF" position.

GAS SHUTOFF

VALV E

OPEN CLOSE

OPERATING INSTRUCTIONS

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.

Page 26

Operating the water heater:

Safety Precautions

Do turn off manual gas shut-off valve if water heater has

been subjected to overheating, fire, flood, physical damage or if the gas supply fails to shut off.

Do Not turn on water heater unless water and gas

supplies are fully opened.

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.

Water Temperature Setting

DANGER: There is a hot water scald potential if the temperature is set too high. Households with small children, disabled or elderly persons may require a 120°F (49°C) or lower temperature setting to prevent contact with HOT water.

The temperature of the water in the water heater can be regulated by setting the temperature on the front of the remote control.

Safety factors should be considered when selecting the water temperature setting of the water heater’s remote control.

The remote control was set at 100°F (38°C) before the water heater was shipped from the factory. This is the recommended starting point.

Water temperatures above 125°F (52°C) can cause severe burns or death from scalding.

Do Not store or use gasoline or other flammable vapors

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 lights, to avoid vapors lighting.

NOTICE: Flammable vapors 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.

Be sure to read and follow the warnings outlined in this manual and on the label located on the water heater.

Mixing valves are available for reducing point of use water temperature by mixing hot and cold water in branch water lines. Contact a licensed plumber or the local plumbing authority for further information. (See page 4 for more details.)

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

Time/Temperature Relationship in Scalds

Water Temperature Time To Produce a Serious Burn

120°F (49°C) More than 5 minutes 125°F (52°C) 11/2 to 2 minutes 130°F (54°C) About 30 seconds 135°F (57°C) About 10 seconds 140°F (60°C) Less than 5 seconds 145°F (63°C) Less than 3 seconds 150°F (66°C) About 11/2 seconds 155°F (68°C) About 1 second

Table courtesy of Shriners Burn Institute

Page 27

Water Temperature Setting…

°F

PRIORITY

POWER

ON/OFF

Higher (Hotter) Lower (Cooler)

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

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

Notice: The remote control cannot be turned on when water is flowing or circulating through the water heater.

Maximum water temperature occurs while the burner is on. To determine the water temperature, turn on a hot water faucet and place a thermometer in the water stream. Water temperature at the faucet may vary depending on season and length of pipe from the water heater.

The factory setting of the remote control temperature range is between 100°F (38°C) and 120°F (49°C).

The remote control is factory preset to 100°F (38°C). To turn the remote control ON or OFF, press the POWER button.

To adjust the temperature to a required setting, press the UP arrow temperature button.

Pressing the UP or DOWN temperature adjustment buttons will change the temperature set point.

The temperature set point on the remote control cannot be increased above 112°F (44°C) when a hot water faucet is in the open position.

Temperatures of 85°F (29°C) can be achieved with the Bath (USC-117 or USC2-117) remote control. Only qualified

service personnel should perform this adjustment. Only factory authorized remote

control(s) should be used.

The hottest temperature water will be at the hot water faucet closest to the water heater.

Always remember to test the water temperature with your hand before use and remember that hotter water increases the risk of scald injury.

Always supervise young children or others who are incapacitated.

The water heater is equipped with a 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 located near the back 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, physical damage, or has been under water, turn off the manual gas shut-off valve(s), and do not operate the water heater again until it has been checked by qualified personnel.

Notice: The water heater may not operate with a small water flow. In such case, increase the water flow. If water heater still does not operate and hot water faucet is completely open, increase the temperature setting on the remote control.

Notice: Display shows °F only.

In Use Indicator

Priority Indicator

(Lit during operation)

LED Display

(Displays water

temperature and error

Temperature

Adjustment

Buttons

codes)

ON/OFF Indicator

* Temperatures 85°F (29°C) and above 120°F (49°C) can be achieved with the

MAIN (UMC-117) remote control. See page 34 and 35 for maximum and minimum temperature adjustment.

Page 28

Care and cleaning of the water heater:

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.

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.

Routine Preventative Maintenance

Properly maintained, your water heater will provide years of dependable troublefree service.

It is recommended that a periodic inspection of the burner, relief valve, air intake filter, water filter and venting system should be made by service personnel qualified in gas appliance repair.

It is suggested that a routine preventive maintenance program be established and followed by the user.

At least once a year, lift and release the lever handle on the pressure relief valve, located in the hot outlet piping 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 pressure relief valve on the hot water heater discharges periodically, this may be due to a problem in the water system. Contact the water supplier or your plumbing contractor on how to correct this. DO NOT plug the relief valve outlet.

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.

Inspect the area around the water heater to ensure a safe operating environment. Keep appliance area clear and free from combustible materials, gasoline and other flammable vapors and liquids.

Ensure the unit has not been damaged. If damage or denting is present, contact a service personnel to verify proper operation.

Check for any abnormal sounds during normal operation of the water heater.

All piping should be checked for gas and/ or water leaks. Refer to page 18 of this manual for instructions on leak testing.

The cold water supply filters should be cleaned monthly. Refer to the “Housekeeping” section for further information.

DO NOT operate the water heater if you feel something is wrong with the unit.

DO NOT allow children to operate or otherwise handle the unit.

Notice: After inspection, maintenance and/or cleaning, ensure proper operation by turning on a hot water faucet.

DANGER: Shock Hazard

Make sure the electrical power to the water heater is off to avoid potential serious injury or damage to components.

DANGER: Combustible materials, such as clothing, cleaning materials or flammable liquids, etc., must not be placed against or next to the water heater.

Housekeeping

Before performing Housekeeping tasks to this water heater, turn the unit off and disconnect the power supply.

Vacuum around the water heater for dust, dirt and lint on a regular basis.

Clean the water heater and remote control by using a damp soft cloth with a few drops of mild detergent and gently wiping the surfaces of the unit. Wipe any remaining moisture with a dry soft cloth.

To ensure sufficient ventilation and combustion air supply, proper clearances must be maintained.

DO NOT block or obstruct the air intake opening of the water heater. A minimum of 12” (30 cm) is required between this combustion air inlet opening and any obstruction.

The water filters should be cleaned on a monthly basis.

HOW TO CLEAN THE WATER FILTER:

● Make sure the unit is OFF and the

electrical power supply has been disconnected.

● Turn the water supply OFF to the

heater.

● Drain heater. See “Draining The

Water Heater” section on page 30.

● Unscrew the water filter, and slide the

filter out.

● DO NOT tap the filter as it may

deform and/or damage the filter.

● To remove severe sediment and dirt,

use a soft brush and wash with running water.

● Return the filter to the water heater and

screw in the filter.

● Turn the electrical power supply and

cold water supply ON to the water heater.

Page 29

DANGER: DO NOT attempt to operate the water heater without the air intake filter.

Housekeeping, continued

CLEANING THE WATER HEATER AND REMOTE CONTROL(S):

● Make sure the unit is OFF and the

electrical power supply has been disconnected.

● DO NOT scrub the appliance with a

brush.

Venting System Inspection

● Use only mild soapy water; other

cleaners may damage the surface of the water heater.

● DO NOT remove any label including the

rating plate while cleaning or servicing.

● DO NOT splash water on the remote

controls when cleaning.

Burner Sight

Glass

The venting system of a direct vent water heater should be inspected annually to ensure all of the vent sections are secure and airtight.

It is recommended that qualified service personnel familiar with Category III venting inspect the venting system.

Check vent connection joint sections with a solution of soapy water to assure air-tightness while the unit is operating.

Burner Inspection

Visually inspect the main burners annually.

Through the front sight glass, inspect the burner flame. Blue flames should be seen when the main burner is firing. See the figure on the left for location of sight glass.

If any unusual burner operation is noted, the water heater should be shut off until qualified service assistance can be obtained.

Bubbles around a joint connection indicates a seal leak. Refer to page 9 for vent sealing instructions.

DO NOT operate the unit if vent system shows signs of leaking exhaust.

Check to make sure that the air intake and vent outlet on the termination has not been blocked or contain debris.

CAUTION: For your safety, burner inspection and cleaning should be performed only by qualified service personnel.

For cleaning, a vacuum cleaner can be used on the burner.

Vacation and Extended Shut-Down

NOTICE: Refer to the Freeze Protection Section on page 30.

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.

The water heater and piping should be drained if they might be subjected to freezing temperatures.

After a long shut-down period, the water heater’s operation and controls should be checked by qualified service personnel.

Condensate Trap Inspection

CAUTION: Do not operate without the condensate trap connected to the vent and routed to the proper drain.

On a regular basis, inspect the condensate trap to ensure there is enough water in the trap and the condensate is draining properly.

Ensure that condensate is disposed of per local codes and regulations.

Page 30

Care and cleaning of the water heater:

¾F

PRIORITY

POWER

ON/OFF

Draining the Water Heater

To Hot

Water

Faucet(s)

Drain Hose

(To Suitable

Drain)

Draining the water heater

WARNING: Failure to follow these instructions while draining the water heater can cause serious damage to the water heater as well as personal injury, including scalding.

Below are instructions for draining water out of the water heater.

Turn off the switch on the remote control.

Close the gas shut-off valve(s).

Unplug the power supply cord (or

disconnect breaker) at least 10 seconds after step #1.

Open all hot water faucets. Before

proceeding to the next step, make sure that COLD water is coming out of all hot water faucets.

Close the water shut-off valve.

Using a suitable container to catch water,

remove the water filter from heater. Attach a garden hose to the drain valve installed in the hot water outlet line and direct the

Optional Maintenance Method

Isolator valve kits may be purchased as optional items from manufacturer, distributor or place of purchase. They allow for one person full

stream of water to a suitable drain where it will cause no damage. Leave water heater as is until next use.

o put the water heater back into operation

after draining, follow the steps below.

Reinstall the drain plug and water filter.

Close the hot water outlet drain valve.

Open the water shut-off valve and close

again after making sure that water comes out from hot water faucets. (This step is to remove air from the water lines.)

Plug into an electrical outlet, fully open

the gas shut-off valve and the water shut-off valve.

NOTICE: The water heater may not operate unless the above procedure is followed correctly.

diagnostic testing and ease of flushing the system.

The kit includes two full port isolation valves, one for the cold side and one for the hot side.

CAUTION: Even when drained properly, a small amount of water will remain in the water heater. In cold weather, conditions this water can freeze. If this happens allow the defrost protection on the heater at least 30 minutes to melt the frozen water or the water heater may not work properly.

WARNING: Failure to drain the water heater can cause serious damage to the wate heater as well as pearsonal injury..

NOTICE: DO NOT unplug the electric power supply cord for freeze protection.

Hot Water Service Valve

Pressure Relief Valve

Drain

Water Outlet

Freeze Protection

Where the water heater may be exposed to freezing conditions, even for a short period of time, be sure to drain all water from the unit as instructed above.

Exposure to freezing conditions can occur from down draft of venting system or from installation in areas exposed to cold air.

The water heater is equipped with a Freeze Protection Electric Heater. As long as electricity is supplied to the water heater, it prevents freezing inside the water heater down to an ambient temperature of approximately minus -30°F (-34°C) (without wind conditions).

This device only protects the internal components of the water heater. It does NOT

Cold Water Service

Valve

Water Inlet

protect piping and valves. Therefore, piping and valves should be wrapped with insulation material as instructed on page 23.

Another method of freeze prevention is by running a small volume of water. Running water will protect the water heater, piping and valves.

Follow the steps below to ensure proper water flow through the water heater and piping:

Turn off the switch on the remote control.

Close the gas shut-off valve.

Open the hot water faucet slightly until a

stream of approximately 1/8” (.32 cm) is flowing. Be sure to check the flow periodically.

Page 31

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.

Problem Possible Cause What To Do

Not enough or no hot water. Water Shutoff valve is not fully opened.

●Check shutoff valve and open fully.

Hot water faucet is not fully opened.

Water piping is frozen.

No electricity or water supply is cut off.

Unit is not “ON”.

The temperature may be set too low.

Mixing Valve Malfunctions (if applicable)

Error code displayed on remote control.

Not enough water demand.

Water inlet filter clogged.

Fixture aerator is clogged.

Scale buildup in heat exchanger.

Hot and cold water lines reversed.

●Open hot water faucet completely.

(The main burner goes off when incoming water volume is inadequate.)

●Allow piping to thaw.

●Check that proper power is being

supplied and/or water supply is adequate.

●Turn the unit “ON” by the button on

the remote control.

●Increase the temperature setting.

●Check and replace if necessary.

●See instructions for Error Code and if

required, contact a dealer for service.

●Increase water flow.

●Clean water inlet filter.

●Clean aerator.

●Check for error code. If required,

contact a dealer for service.

●Reverse water connections.

Water not hot enough. The temperature may be set too low.

The gas valve is not fully opened.

Gas supply pressure is low.

Bleed over in one of the hot water fixtures.

Water too hot. Temperature is set too high.

Water shutoff valve is not fully opened.

Small amount of water has been heated.

Fan continues to rotate after hot water faucet is closed.

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 electrical wiring, gas piping, remote control, burners, vent connectors or other safety devices. Refer repairs to qualified service personnel.

This function is to supply hot water when the hot water faucet is reopened.

●Increase the temperature setting.

●Check and open the gas valve fully.

●Call your gas company to verify the

gas meter and gas piping size.

●Call dealer for service.

●Decrease the temperature setting.

●Check shutoff valve and open fully.

●Allow more water to flow.

●Normal operation. There is no need

to call for service.

Page 32

Error Code Guide:

When an error code is displayed:

● Close the hot water faucet, turn off the switch on the remote

control.

● Wait for about 5 minutes before turning the switch on

again.

● Open the hot water faucet.

If the error code remains in the display:

● Close the hot water faucet and turn off the switch on the

remote control.

● Take the proper action shown below and attempt operation

of the appliance again.

Error Code Possible Cause What To Do

11 The Gas Shutoff Valve is not opened

completely.

12 Gas Service has been interrupted.

LP Gas is running low. (LP models only)

15 The hot water faucet is not opened enough.

(Every 60 seconds you hear

an alarm or when the faucet is

closed, the alarm stops.)

Air intake or vent termination may be blocked.

The vent pipes on the concentric vent termination may not be connected properly.

If the error code is still shown:

● Turn off the hot water faucet and turn off the switch on the

remote control.

● Take note of the error code displayed and call the customer

service assistance number in the “If You Need Service” section of the manual on the back cover.

Notice: If an error code other than those listed below is displayed, immediately turn off the hot water faucet, take note of the error code, turn off the switch on the remote control and call the customer assistance number.

●Open the Gas Shutoff Valve

completely.

●Contact Gas Utility Company.

●Fill up LP Gas container or replace

with a new cylinder of LP Gas.

●Open the faucet more to secure

enough volume.

●Remove any obstructions on the air

intake or vent termination.

●Contact a dealer for service.

1L Water heater has build up of lime deposits.

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.

If the error code is still displayed after taking the above steps.

●Contact a dealer for service.

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.

Page 33

Replacement Parts:

Direct Vent Water Heater

Instructions For Placing a Parts Order

Film Type OHL

Flame

Rod

WARNING: For your

safety, DO NOT attempt to disassemble this unit for any reason.

Front View

Address parts orders to the distributor or store where the water heater was purchased.

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.

Unit Cover Panel

Heat Transfer Pipe

Heat Exchanger Assy.

Part description (as noted below) and

number of parts desired.

CAUTION: For your safety, DO NOT attempt repair of electrical wiring, gas piping, burners, vent connectors or other safety devices. Refer repairs to qualified service personnel.

Side View

Electrode

Burner

Assy.

Blower Motor

Circuit

Board

Hot Water

Outlet

Drain Plug

Cold Water

Supply

Water Flow

Solenoid

Ignitor

Gas Valve Assy.

Gas Supply

Page 34

The content on this page is intended for use by qualified

°F

PRIORITY

POWER

ON/OFF

Higher (Hotter) Lower (Cooler)

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

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

installation/service personnel ONLY.

WARNING: Improper adjustment, alteration, service or maintenance can cause property damage, personal injury, or death.

Maximum Temperature Adjustment by the Main Remote Control (UMC-117)

Required adjustment for up to 140°F (60°C) water

temperature settings

WARNING: Refer to scald potential warnings on

page 4 before making adjustment. Changing this setting is done at your own risk.

DO NOT execute the following adjustment if the setting of up to 140°F (60°C) is not required.

Follow the instructions below if it is determined that a setting of up to 140°F (60°C) is required.

Turn on the remote control. Turn off the gas and

●

water shutoff valves.

Press the UP arrow temperature adjustment

●

button on the remote control for several times and set the temperature at 120°F (49°C).

Press and hold the UP button on remote control

●

for more than 5 seconds. Number (120) on the display of the remote control will begin to blink.

While the number is blinking, push the UP arrow

●

temperature adjustment button and the Down arrow temperature adjustment button at the same time. The display of the remote control will show “140”.

Push the UP or Down button to set desired

●

temperature.

Turn on the gas and water shut off valves.

●

Check and ensure safe operation and performance

●

of the water heater.

DANGER: Hotter water increases

the potential for Hot Water SCALDS.

Time/Temperature Relationship in Scalds

Water Temperature Time To Produce a Serious Burn

120°F (49°C) More than 5 minutes

125°F (52°C) 1-1/2 to 2 minutes

130°F (54°C) About 30 seconds

135°F (57°C) About 10 seconds

140°F (60°C) Less than 5 seconds

145°F (63°C) Less than 3 seconds

150°F (66°C) About 1-1/2 seconds

155°F (68°C) About 1 second

Table courtesy of Shriners Burn Institute

See steps below to LIMIT maximum water temperature setting to 120°F (49°C).

Turn on the remote control. Turn off the gas and

●

water shutoff valves.

●Press the Down arrow temperature adjustment

button on the remote control for several times and set the minimum setting temperature (100°F(38°F) or 85°F(29°F)).

●Press and hold the Down button on the remote

control for more than 5 seconds. Number on the display of the remote control will begin to blink.

●While the number is blinking, push the Down arrow

temperature adjustment button and the UP arrow temperature adjustment button at the same time. Number of the display of the remote control will stop blinking.

●Push the UP or Down button to set desired

temperature.

●Turn on the gas and water shut off valves.

●Check and ensure safe operation and performance

of the water heater.

Notice: Display shows

°F only.

In Use Indicator (Lit during operation)

LED Display

(Displays water

temperature and error

codes)

Priority Indicator

Temperature

Adjustment

Buttons

ON/OFF

Indicator

Page 35

The content on this page is intended for use by qualified

Dip switch adjustment

3,280 feet (1,000m)

thru

6,560 feet (2,000m)

As set from factory

Dip switch adjustment

6,560 feet (2,000m)

thru

9,840 feet (3,000m)

DIP2

ONOFF

installation/service personnel ONLY.

WARNING: Improper adjustment, alteration, service or maintenance can cause property damage, personal injury, or death.

Minimum Temperature Adjustment by the Main Remote Control (UMC-117, USC1-117 and USC2-117)

Required adjustment for 85°F (29°C) water temperature setting.

Follow the instruction below if it is determined that a setting of 85°F (29°C) is required.

●Turn on the remote control. Turn off the gas and

water shutoff valves.

●Press the Down arrow temperature adjustment but-

ton on the remote control for several times and set the temperature at 100°F (38°C).

● Press the Down button on remote control 3 times

within 5 seconds. The display of the remote control will show “85”.

●Turn on the gas and water shut off valves.

● Check and ensure safe operation and performance

of the water heater.

NOTICE: The maximum ow rate at 85°F (29°C) is

1.3 gpm (5.0 l/m).

High Altitude DIP Switch Adjustment For High Altitude Installation above 3,280 Feet (1,000m):

When the water heater is installed above 3,280 feet (1,000m), the adjustment of DIP switch is required for high altitude installation. Without adjusting the DIP switch, the water heater may not function properly.

NOTICE: If the water heater is installed less than 3,280 feet (1,000m), no action is required.

How to adjust the DIP switch on the PCB for high altitude installation:

● Check the altitude (above sea level) where the

water heater is installed.

● If the altitude is more than 3,280 feet (1,000m),

the adjustment of DIP switch is required.

● Turn off the gas shut off valve and water shutoff

valve.

●Remove the front cover.

● Find the two DIP switches located at the top right

hand side of the PCB. The switch labeled "DIP 2" is the bottom switch.

● Change the DIP switch #3 setting of DIP 2 to

“ON” position if the water heater is installed above 3,280 feet (1,000m) below 6,560 feet (2,000m). See the diagram below. DO NOT alter any other DIP Switch.

● Change the DIP switch #4 setting of DIP 2 to

“ON” position if the water heater is installed above 6,560 feet (2,000m) below 9,840 feet (3,000m). See the diagram below. DO NOT alter any other DIP Switch.

PCB

DIP

Switches

Location of DIP Switches on PC Board.

NOTICE: Manifold pressure will be reduced by this adjustement.

●Attach the unit’s front cover.

● Turn on the gas shutoff valve and water shutoff

valve.

● Check and ensure safe operation and performance

of the water heater.

Page 36

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:

2600 Gunter Park Drive Montgomery, Alabama 36109-1413 Phone: 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 front panel

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 problem 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 248 CMR

4.00 and 5.00 for installation of through – the – wall vented gas appliances as follows:

5.08: Modifications to NFPA-54, Chapter 10

(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 monoxide 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 monoxide 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.

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 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 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.

Rheem PH-25RDVS, ECO-180DV, RUTG-66DV, RTG-66DV, RMTG-66DV User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual