Raypak NH-188XL Installation Manual

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INSTALLATION & OPERATING

INSTRUCTIONS

Commercial

Tankless

Water Heater

NH-188DVL & XL
NH-208DVL & XL

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

Do not store or use gasoline or other ammable
vapors and liquids in the vicinity of this or any other
appliance. To do so may result in an explosion or re.

What to Do If You Smell Gas

• Do not try to light any appliance.

• Do not touch any electrical switch; do not use any
phone in your building.

• Immediately call your gas supplier from a neighbor’s
phone. Follow the gas supplier’s instructions.

• If you cannot reach your gas supplier, call the fire
department.

• Do not return to your home until authorized by the
gas supplier or fire department.

Installation and service must be preformed by
a qualified installer, service agency, or the gas
supplier.

This manual should be maintained in legible condition
and kept adjacent to the water heater or in a safe place
for future reference.

Catalog No. 3000.57

Effective: 08-01-12

AP16565 (07/12)

CONTENTS

Important Safety Information

Safety Precautions .................................................. 2–8

Product Information

Product Information .................................................... 8

Specifications ........................................................ 9, 10

Safety

General Descriptions ............................................11, 12

Using Your Water Heater

Setting the Water Temperature ............................ 13, 14

Caring for Your Water Heater

Water Heater Inspections .................................... 15, 16

Care and Cleaning ................................................17, 18

Preventive Maintenance ............................................ 19

Draining the Water Heater .....................................20–22

Freeze Protection ...................................................... 22

Vacation and Extended Shutdown ........................... 23

Troubleshooting Chart ......................................... 23, 24

Service Error Code Chart .................................... 25, 26

If You Need Service

Call for Assistance .................................................... 26

Installation Instructions

Standards Compliance ...............................................28

Choosing a Location ............................................ 28, 29

Product Inspection .................................................... 30

Water Heater Installation ...................................... 30–33

Venting ..................................................................34–45

Water Supply ........................................................ 46–50

Gas Supply ........................................................... 50–54

Electrical Wiring .................................................... 54–58

Remote Control Installation .................................. 57, 58

Insulation Blankets .....................................................59

Installation Precautions .............................................. 59

Installation Checklist ..................................................60

Piping for Space Heaters ........................................... 61

Lighting the Water Heater ....................................62, 63

Setting the Water Temperature .............................64–66

High-Altitude Dip Switch Adjustments.................66, 67

Parts Replacement

Warranty Information.............................................70-71

IMPORTANT SAFETY INFORMATION

...........................................68, 69

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.

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

These words mean:

DANGER: An imminently hazardous

situation that will result in death or serious injury.

WARNING: A potentially hazardous

situation that can result in death or serious injury
and/or damage to property.

CAUTION: A potentially hazardous

situation that may result in minor or moderate injury.

NOTICE: Attention is called to observe a

specified procedure or maintain a specific condition.

WARNINGS:

• This water heater is not suitable for use in
manufactured (mobile) homes!

• Improper installation, adjustment, alteration,
service, or maintenance can cause death,
personal injury, or property damage. Follow the
instructions in this manual.

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 death
or serious bodily injury. 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.

WARNING:

California Proposition 65

This product contains chemicals known to the state
of California to cause cancer, birth defects, or other
reproductive harm.

2

2

IMPORTANT SAFETY INFORMATION

Water Heater Venting Safety

DANGER: 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 will result in death from 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.

WARNINGS:

• Gasoline and other flammable liquids, materials,
and vapors (including paint thinners, solvents,
and adhesives) are extremely dangerous. DO NOT
handle, use, or store gasoline or other flammable or
combustible materials anywhere 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 death, bodily injury, or property
damage.

• Combustible construction refers to adjacent walls
and ceilings and should not be confused with
combustible or flammable products and materials.
Combustible materials, such as clothing, cleaning
materials, or flammable liquids, should never be
stored in the vicinity of this or any gas appliance.
Fire or explosion can occur causing death, personal
injury, and/or product damage. See page 29 for
clearances to combustible materials.

• Follow vent manufacturer’s instructions for venting
installation, including additional clearances from
combustibles, to avoid conditions that can lead to
death, personal injury, and/or property damage.

• Use tankless water heater manufacturer-approved
Category III Stainless Steel vent material only. No
other vent material is permitted.

• 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.

DANGER

FLAMMABLES

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

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

Keep flammable products:

1. far away from heater,

2. in approved containers,

3. tightly closed and

4. out of children's reach.

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

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

• 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 in. (48 cm) for two-unit installation. Maintain a
center-to-center distance between vent terminations
of 21 in. (53 cm) for installation of three or more units.

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.

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

CAUTIONS:

• Ensure that the appliance vent is securely attached to
the water heater collar.

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

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

• Follow the vent manufacturer’s installation
instructions because the design might vary from
manufacturer to manufacturer.

Safety

3

3

IMPORTANT SAFETY INFORMATION

Water Supply Safety

DANGERS:

• WATER TEMPERATURE

Safety

SETTINGS – 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 death or severe
burns from scalding. Be sure to
read and follow the warnings
outlined on the pictured label.

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

• 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.

• Failure to perform the recom-

mended Routine Preventive 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.

WARNINGS:

• 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.

• 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 the 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.

• Failure to drain the water heater as described on
page 20 can cause serious personal injuries from
scalding and/or damage the water heater.

!

DANGER

HOT

BURN

Water temperature over 125°F (52°C)
can cause severe burns instantly or
death from scalds.

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

See instruction manual before
setting temperature at water
heater.

Feel water before bathing or
showering.

Temperature limiting valves are
available, see manual.

Time/Temperature Relationship in Scalds

Water Time to Produce
Temperature 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

Temperature Conversion Chart °F/°C

85 100 102 104 106 108 110 112 °F

29 38 39 40 41 42 43 44 °C

114 116 118 120 125 130 140 °F

46 47 48 49 52 54 60 °C

CAUTIONS:

• 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 contaminants.

– With inlet water temperatures

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

– DO NOT reverse the hot and

cold water connections. The
water heater will not operate.

• 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.

4

IMPORTANT SAFETY INFORMATION

Natural Gas and Liqueed Petroleum Safety

DANGERS:

• Never attempt to convert the water heater from
natural gas to LP. The water heater should only
use the fuel type in accordance with listing on data
plate—natural gas for natural gas units and LP for
LP units. Any other fuel usage will result in death or
serious personal injury from fire and/or explosion.
This water heater is not certified for any other fuel
type.

• Both natural gas and propane (LP) 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 natural gas or LP, 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 using LP gas are different from
natural gas models. A natural gas water heater will
not function safely on LP and vice versa.

• LP water heaters 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.

• LP 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 also sniff near the floor.

• 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.

• Combustible materials, such as clothing, cleaning
materials, or flammable liquids, must not be placed
in the vicinity of the water heater.

• If a gas leak is present or suspected:

– Do not attempt to find the cause yourself.
– Never use an open flame to test for gas leaks. The

gas can ignite resulting in death, personal injury,
or property damage.

– Follow the steps listed under “What to Do If

You Smell Gas” found on the front cover of this
manual.

WARNINGS:

• The installation of gas piping must conform to local

utility company requirements and/or in the absence
of local codes, use the latest edition of National Fuel
Gas Code (NFGC), ANSI Z223.1/NFPA 54, or CAN/
CSA B149.1, Natural Gas and Propane Installation
Code.

• Install a gas pressure regulator in the gas supply
line. The regulator should not exceed the maximum
supply pressure. DO NOT use an industrial-type gas
regulator.

• Should overheating occur or the gas supply fail to
shut off, turn off the manual gas control valve to the
water heater.

CAUTIONS:

• Do not attempt repair of electrical wiring, gas piping,
remote control, burners, vent connectors, or other
safety devices. Refer repairs to qualified service
personnel.

• Turn off the manual gas 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.

• Do not turn on the water heater unless the water
and gas supplies are completely opened.

NOTICE:

• The factory setting allows operating temperatures
between 100°F (38°C) and 120°F (49°C).
Temperatures of 85°F (29°C) and up to 185°F
(85°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 factory­authorized remote control(s) should be used.

Safety

5

IMPORTANT SAFETY INFORMATION

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 death, personal injury, or property

Safety

damage. Should you have any problems reading or
following the instructions in this manual, STOP and
get help from a qualified service technician.

FOR YOUR SAFETY READ BEFORE OPERATING

WARNING

causing property damage, personal injury or loss of life.

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

OPERATING INSTRUCTIONS

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.

GAS SHUTOFF

VALVE

OPEN CLOSE

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.

6

Electrical Safety

IMPORTANT SAFETY INFORMATION

DANGER: Shock Hazard – Make sure

the electrical power to the water heater is off to avoid
electric shock that will result in death or serious
personal injury.

WARNINGS:

• For your safety, the information in this manual must
be followed to minimize the risk of fire, explosion,
or electric shock that can result in death, personal
injury, and/or property damage.

• 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, CAN/CSA C22.1, Part 1.

CAUTIONS:

• Label all wires prior to disconnecting for service.
Wiring errors can cause dangerous and improper
operation. Verify correct operation after servicing.

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

• Make certain the power to the water heater is OFF
before removing the unit cover panel. Exposed
electrical components and moving parts can cause
personal injuries.

• 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.

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

7

IMPORTANT SAFETY INFORMATION

General Installation and Maintenance Safety

WARNINGS:

• This water heater must be installed in accordance

SafetyProduct Information

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
(NFGC), ANSI Z223.1 and National Fire Protection
Association, NFPA 54, or in Canada, CAN/CSA
B149.1, Natural Gas and Propane Installation
Code, and the latest edition of the National
Electrical Code, ANSI/NFPA 70, or in Canada,
Canadian Electrical Code, CAN/CSA C22.1, Part 1.

• If local codes require the application of external
insulation blanket kits, carefully follow the
manufacturer’s installation instructions included
with the kit. Only use blanket kits that are
approved for use with your water heater.

• For your safety, DO NOT attempt to disassemble
this water heater for any reason. Improper
adjustments, alterations, service, or maintenance
can cause death, personal injury, or property
damage.

SAFETY PRECAUTIONS:

• Read this manual entirely before installing and/or
operating the water heater.

• Use this water heater only for its intended purpose
as described in this Use and Care Manual.

• 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.

• Be sure your water heater 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 service technician.

SAVE THESE

INSTRUCTIONS

PRODUCT INFORMATION

For Your Records

Write down and save the following product
information along with the original sales slip and/or
cancelled check. The model and serial numbers
can be found on the top label on the right side of
the water heater.

MODEL NUMBER:

SERIAL NUMBER:

DATE OF INSTALLATION:

INSTALLING COMPANY/PHONE NUMBER:

PLUMBING CONTRACTOR/PHONE NUMBER:

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 Chart on pages 23 and 24. Always refer
to this chart before calling for service. Referring to this
chart before calling may answer your question(s) and
eliminate the need for service.

Preoperating Checklist

Is the main gas valve to the water heater turned on?

Is the fuse in place or is the breaker turned on?

Does the water heater’s electronic ignition light?

Is the water temperature set to a safe temperature?

Is the water heater connected to a floor drain?

Is the water heater properly vented to the outside?

Is the water heater installed in a safe location away
from flammable materials and/or freezing conditions?

See page 26 for additional service information.

8

1315/16"

(354 mm)

19/16"

(40 mm)

1

3

/4"

(45 mm)

5

3

/16"

(131 mm)

5

5

/8"

(143 mm)

55/8"

(143 mm)

5

1

/2"

(140 mm)

4

3

/16"

(106 mm)

3

3

/8"

(86 mm)

35/8"

(92 mm)

13

1

/2"

(343 mm)

6

3

/4"

(172 mm)

9

1

/2"

(241 mm)

Specications – Direct-Vent Models

1315/16"

(354 mm)

81/2"

(216 mm)

1

9

/16"

(40 mm)

1

3

/4"

(45 mm)

5

5

/8"

(143 mm)

55/8"

(143 mm)

4

3

/16"

(106 mm)

2

7

/8"

(73 mm)

2

1

/16"

(53 mm)

2

1

/4"

(58 mm)

13

1

/2"

(343 mm)

2913/16"

(757 mm)

5

25

/8"

(651 mm)

PRODUCT INFORMATION

1

13

/2"

1

/2"

5

(140 mm)

5

(131 mm)

19/16"

(40 mm)

(343 mm)

3

/16"

1315/16"

(354 mm)

3

6

/4"

(172 mm)

3

1

/4"

(45 mm)

1

9

/2"

(241 mm)

Product Information

Specications – Outdoor Models

2613/16"

(663 mm)

3

/8"

3

(86 mm)

3

/16"

4

(106 mm)

3

23

/4"

(603 mm)

3

/16"

4

(106 mm)

9

1

/16"

(40 mm)

(143 mm)

5

5

/8"

1

/2"

13

(343 mm)

1315/16"

(354 mm)

55/8"

(143 mm)

35/8"

(92 mm)

3

/4"

1

(45 mm)

81/2"

(216 mm)

(53 mm)

7

/8"

2

(73 mm)

2

1

/16"

(143 mm)

1

2

5

/8"

5

55/8"

(143 mm)

/4"

(58 mm)

9

PRODUCT INFORMATION

Specications

The following product informa­tion can be found from the rating
label on this water heater.

A. Model Number
B. Serial Number
C. Data Bar Code
D. Heater Type
E. Installation Type
F. Type of Gas
G. Max. Inlet Gas Pressure
H. Min. Inlet Gas Pressure
J. Recovery Rating
K. Max. BTU Input Rating
L. Min. BTU Input Rating
M. Manifold Gas Pressure

Product Information

N. Certification Stamp
P. Alternate Approval Stamp
Q. Clearances

English Rating Label

English/French Rating Label

10

General Descriptions

PRODUCT INFORMATION

Typical Direct-Vent Water Heater

(Venting Required)

Condensate

Collector

Remote Control

With Power Switch

Product Information

To Hot Water

Faucet(s)

Drain Valve

Power

Supply

Cord

Union

Relief

Valve

Service

Valve

Water

Filter

Cold Water Supply

Shut-Off Valve

To Drain: Dispose of condensate
in accordance with local codes.

Manual Gas

Shut-Off Valve

Union

Sediment Trap (in accordance with the
local gas authority)

Cap

Manual Gas
Supply Line

Shut-Off Valve

Discharge Line

(To Suitable Drain)

6"

(150 mm)

Air Gap

11

PRODUCT INFORMATION

Typical Outdoor Water Heater

(No Venting Required)

This water heater is for OUTDOOR installation only.

DANGER: DO NOT install this water heater indoors or in a confined area. It is designed for

outdoor installation only. Any other type of installation will result in death or serious personal injury.

Product Information

Flue

Terminal

Remote Control

With Power Switch

To Hot Water

Faucet(s)

Drain Valve

Hard-Wire

Power Supply

(not supplied)

Cord

Union

Relief

Valve

Relief

Valve

Service

Valve

Air Inlet

Cold Water Supply

Water
Filter

Shut-Off Valve

Manual Gas

Shut-Off Valve

Union

Sediment Trap (in accordance with the
local gas authority)

Cap

Manual Gas
Supply Line

Shut-Off Valve

12

Discharge Line

(To Suitable Drain)

6"

(150 mm)

Air Gap

Safety Precautions

USING YOUR WATER HEATER

WARNING: Flammable vapors can

be drawn by air currents from surrounding areas to
the water heater. Vapors can ignite causing death,
personal injury, or product damage.

• DO NOT store or use flammable or combustible
materials (gasoline, paint thinner, adhesives,
newspapers, rags, mops, etc.) in the vicinity of
the water heater or any other gas appliance. If
they must be used, open doors and windows
for ventilation, and shut off all gas-burning
appliances, including their pilot lights.

• 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 completely opened.

• If there is any difficulty in understanding or
following the operating and care instructions in
this manual, it is recommended that you contact
a qualified service technician to perform the work.

Setting the Water Temperature

DANGER: Water temperatures above 125°F (52°C)

will result in death and/or severe burns from scalding.
Safety and energy conservation are factors to be considered

when selecting the water temperature setting. The temperature
of the water in the water heater can be regulated by setting the
temperature on the front of the remote control. Be sure to read
and follow the warnings outlined on the pictured label.

The remote control has been preset and shipped at the
recommended temperature setting.

Safety factors should be considered whenever altering the water
temperature setting. The chart below may be used as a guide in
determining the proper water temperature for your home.

!

DANGER

HOT

Use Instructions

BURN

Time/Temperature Relationship in Scalds

Water Time to Produce

Temperature 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

Water temperature over 125°F (52°C)
can cause severe burns instantly or
death from scalds.

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

See instruction manual before
setting temperature at water
heater.

Feel water before bathing or
showering.

Temperature limiting valves are
available, see manual.

13

USING YOUR WATER HEATER

Setting the Water Temperature (cont.)

Maximum water temperature occurs while the
water heater burner is on. To determine the water
temperature:

Turn on the hot water faucet and place a
thermometer in the water stream.

NOTICE: Water temperature at the faucet

may vary depending on the season and the length
of pipe from the water heater.

The remote control temperature range is between
100°F (38°C) and 120°F (49°C). To adjust the
temperature to a desired setting, press the UP
or DOWN adjustment button on the face of the
remote control. The new temperature set point will
show on the LED display.

Use Instructions

In-Use Indicator

(Lit during operation)

Priority

Indicator

Temperature

Adjustment

Buttons

NOTICES:

• The temperature set point on the standard
remote control cannot be increased above
112°F (44°C) when a hot water faucet is in the
open position. To achieve temperatures above
120°F (49°C) or 85°F (29°C), contact a qualified
service technician. Only factory-authorized
remote control(s) should be used.

• The water heater may not operate with a
small water flow. Increase the water flow and
recheck. If it still does not operate with the hot
water faucet completely open, increase the
temperature setting on the remote control.

Water Heater Facts

DANGER: Water temperatures above

125°F (52°C) will result in death and/or severe
burns from scalding.

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

• Always remember to test the water temperature
with your hand before use.

• 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.

• Any water heater that has been subjected to fire,
flood, physical damage, or been under water
should be turned off at the manual gas shut-off
valve and not used until it has been checked by
qualified service personnel.

14

LED Temperature

and Error Code

Display

Power On/Off

Button and

Indicator

Water Heater Inspections

CARING FOR YOUR WATER HEATER

Venting System

The venting system should be inspected annually
by a qualified service technician to ensure all of
the vent sections are secure and airtight.

(Direct Vent Only)

WARNING: Do not operate the

water heater if the vent system shows signs of
leaking exhaust. Leaking exhaust could lead to
death, personal injury, and/or product failure.

Outdoor models

Check the air intake and vent outlet for
blockage and/or debris.

Condensate Trap (Direct Vent Only)

CAUTION: Do not operate without

the condensate trap connected to the vent and
routed to the proper drain. It could cause the
system to malfunction or fail.

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.

Use Instructions

15

Burner

Sight

Glass

CARING FOR YOUR WATER HEATER

Water Heater Inspections (cont.)

Burner

It is recommended that the burner be inspected
annually by a qualified service technician.

DANGER: Shock Hazard –

Removing the front cover panel exposes you to
live electricity. Electric shock will cause death or
serious personal injury.

1

Remove 4 screws and the unit cover panel.

3

While the water heater is operating, inspect
the main burner flames through the burner
sight glass. The flames should be blue when
the main burner is firing.

NOTICE: If the flames are not blue

or you observe unusual burner operation, shut
off the water heater and contact a qualified
service technician.

2

Turn on a hot water faucet.

Care Instructions

16

4

Turn off the hot water faucet and reinstall the

unit cover panel.

Care and Cleaning

Drain Valve

Cold Water Supply

Shut-Off Valve

CARING FOR YOUR WATER HEATER

DANGER: Shock Hazard – Make

certain power to the water heater is OFF before
removing protective cover for any reason. Electric
shock will cause death or serious personal injury.

WARNING: Combustible materials,

such as clothing, cleaning materials, or flammable
liquids, must not be placed against or next to the
water heater. Fire or explosion can occur causing
death, personal injury, and/or product damage.

All care and cleaning to and around the water
heater should only be performed with the water
heater turned off and the electrical power
supply disconnected.

1

Vacuum around the water heater to remove any

dust, dirt, and/or lint buildup.

NOTICE: The air intake requires a

minimum of 12 in. (30 cm) of clearance between
the air intake opening and any obstruction.

Clean the water filter monthly, as described below
and on page 18.

Water Filter Cleaning

1

Turn off the water heater and disconnect the

electrical power supply.

2

Clean the water heater and the remote control

with a damp soft cloth and mild detergent.
Gently wipe and completely dry all surfaces.

Outdoor models

3

Check the air intake and vent outlet for

blockage and/or debris.

2

Turn off the water supply to the water heater.

3

Drain the water heater. See page 20.

Care Instructions

17

CARING FOR YOUR WATER HEATER

Care and Cleaning (cont.)

CAUTION: Do not tap or force

the filter during removal. This can deform and/or
damage the filter.

4

Unscrew the water filter from the base of the

cold water inlet line and carefully slide it out
of the line.

CAUTION: Do not overtighten the

water filter. Overtightening can deform and/or
damage the filter.

6

Replace the filter in the cold water inlet line and

tighten until it is snug.

5

Clean the water filter under running water. To

remove severe sediment and dirt, use a soft
brush.

Care Instructions

7

Turn on the water supply, reconnect the

electrical supply, and turn on the water heater.

18

CARING FOR YOUR WATER HEATER

15

16

17

24

Relief
Valve

Preventive Maintenance

WARNING: Failure to perform

routine preventive maintenance can prevent the
water heater from operating properly. Improper
operation can cause carbon monoxide dangers,
excessive water temperatures, and other
potentially hazardous conditions resulting in death,
personal injury, and/or product damage.

Properly maintaining your water heater will ensure
dependable, trouble-free service.

User Preventive Maintenance

Establish and follow a routine preventive
maintenance program. The following suggested
items should be included in your program.

• Monthly check and clean the water filter. See
“Water Filter Cleaning” on page 17.

WARNING: Hot water is released

during manual operation of the relief valve. Make
sure all people and animals are clear from the area
before performing this check to prevent death,
personal injury, and/or property damage from hot
drain water.

NOTICE: If the pressure relief valve on

the hot water heater discharges periodically, this
may indicate a problem in the water system.
Contact the water supplier or a plumbing
contractor to correct the problem. DO NOT
plug the relief valve outlet.

• Inspect and keep the area around the water
heater clear and free of flammable materials,
such as gasoline and other flammable vapors
and liquids.

• Visually inspect the water heater for damage
and/or denting. If present, contact a service
personnel to verify proper operation.

• Check for abnormal sound during normal
operation (e.g., hissing or banging noises).
Contact a qualified service technician or
plumbing contractor.

• Check all gas and water pipes for leaks. See
page 53.

NOTICES:

– DO NOT operate the water heater if you feel
something is wrong with the unit.
– DO NOT allow children to operate or handle
the unit.

• After inspections, maintenance, and/or cleaning,
ensure proper operation by turning on a hot
water faucet.

Care Instructions

• Annually check the operation of the pressure-

relief valve. Lifting the lever handle on the
pressure-relief valve opens the valve to flush hot
water through the discharge line to the drain.
After several gallons have drained, release the
lever handle to close the valve and stop draining.

Professional Preventive Maintenance

It is recommended that a periodic inspection of
the water heater burner, relief valve, air intake filter,
water filter, and venting system be made by a
qualified service technician.

19

Cold Water Supply

Shut-Off Valve

CARING FOR YOUR WATER HEATER

Draining the Water Heater

WARNING: Failure to follow these

draining instructions can cause serious personal
injury from scalding and/or product damage.

5

Close the water shut-off valve.

1

Turn off the water heater by pressing the

POWER ON/OFF button on the control panel.

2

Close the gas shut-off valve(s).

3

At least 10 seconds after Step 1, unplug the

Care Instructions

water heater or disconnect the power supply at
the circuit breaker box.

6

Using a suitable container to catch the water,

remove the water filter from the base of the cold
water inlet line.

7

Connect a garden hose to the drain valve in the

hot water outlet line and place the other end in
a suitable drain. Open the drain valve until all
the water has drained from the water heater.
Leave water heater as is until placed back in
service.

20

4

Open all hot water faucets. Run the water until it

is COLD; then shut off the faucet.

CARING FOR YOUR WATER HEATER

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 water heater at least 30 minutes
to melt the frozen water. The water heater will not
work properly until this water is thawed.

To put the water heater back in service:

1

4

Open all hot water faucets and let run until all

air has been purged from the lines.

Disconnect drain hose. Make sure the drain

valve is closed.

2

Reinstall the water filter in the base of the cold

water inlet line.

3

Open the water shut-off valve.

5

Plug in the power cord or reconnect the power

supply at the circuit breaker box.

6

Open the gas shut-off valve(s).

7

Care Instructions

Press the POWER ON/OFF button on the

control panel to restart the unit.

21

Cold Water

Service Valve

Hot Water

Service Valve

Hot Water

Service Valve

Pressure

Relief Valve

Relief

Valve

Water
Outlet

Water

Outlet

Water

Inlet

Water

Inlet

Drain

Drain

CARING FOR YOUR WATER HEATER

Draining the Water Heater (cont.)

Preferred Drain Method

Isolator valve kits may be purchased from the
manufacturer, distributor, or place of purchase.
The kits include two full port isolation valves to be
used in the inlet and outlet water lines. It is highly
recommended to install isolator valve kits because
these kits provide a means for full diagnostic
testing and ease of system flushing.

Freeze Protection

WARNING: Failure to drain the

water heater can cause serious personal injury
from scalding and/or product damage.

Whenever the water heater may be exposed to
freezing conditions, make sure to completely drain
the water from the unit. See page 20.

Freezing conditions come from the ventilation
system on direct-vent models and from exposure
to cold air on outdoor models.

All of these water heaters are equipped with
a freeze protection electric heater. This heater
prevents freezing inside the water heater down to
an ambient temperature of approximately -30°F
(-34°C). These temperatures are all based on
temperatures without wind.

The heater only protects the internal components
of the water heater.

NOTICE: Unplugging or disconnecting

Care Instructions

the power supply to the water heater will also
disconnect the power to the heater.

External piping and valves require additional
freeze protection. One method is to wrap
insulation around the piping and valves.

Another method is to turn on a hot water faucet
and leave a small amount of water running at a
faucet. This will protect the water heater, piping,
and valves from freezing.

Running Water Freeze Protection

1

Turn off the water heater by pressing the

POWER ON/OFF button on the control panel.

2

Close the gas shut-off valve(s).

22

3

Open a hot water faucet slightly until the water

stream is approximately 1/8 in. (0.3 cm). Be sure
to check the flow periodically.