Eccotemp 6.5GB BUILDER Series Installation guide

6.5GB BUILDER SERIES
WHOLE HOME TANKLESS HOT WATER HEATER
INSTALLATION, USE AND CARE INSTRUCTIONS
100°F
INDOOR MANUAL
Wash Down
Apartment/Co
ndos
Tiny House Office Cabins
Mid Size Home
Whole Hom
eTown Home
6.5GB-LP
6.5GB-NG

PLEASE NOTE: 6.5GB IS FOR INDOOR PERMANENT INSTALLATIONS ONLY. THIS MANUAL AND ALL ECCOTEMP CONTENT IS SUBJECT
TO CHANGE WITHOUT NOTICE. PLEASE VISIT WWW.ECCOTEMP.COM/SUPPORT FOR MORE INFORMATION.
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WARNING: If the information in these
instructions is not followed exactly, a fire or
explosion may result causing property
damage, personal injury or death.
• Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliances.
• WHAT TO DO IF YOU SMELL GAS
- Do not try to light any appliances.
- 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.
• Installation and service must be performed
by a qualified installer, service agency or
the gas supplier.

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Eccotemp Systems, LLC
315-A Industrial Road
Summerville, SC 29483
866-356-1992
AUTOMATIC INSTANTANEOUS WATER HEATER
MODEL#: 6.5GB-ILP Maximum Input Rang
(Btu per hour): 170,000
SERIAL#: Minimum Input Rang
(Btu per hour): 17,000
GAS TYPE: LIQUID
PROPANE ONLY Minimum Inlet Gas Pressure:
8.0” W.C.
(1.99 kPa)
VOLTAGE: 120 Volts Maximum Inlet Gas
Pressure:
13’’ W.C.
(3.23 kPa)
FREQUENCY: 60 Hz Manifold Pressure: 6.67” W.C.
(1.66 kPa)
AMPS: Less than 10 Amperes Maximum Working
Pressure: 150 PSI
RECOVERY RATING:
As used in this standard, the quantity of water obtained by multiplying the manufacturer’s input
rating in Btu per hour by thermal efficiency and dividing the product by 8.25 Btu per gallon. This is
based on a 100°F (37.8°C) temperature rise, and a nominal specific heat for water of 8.25 Btu per
gallon per degree F.
Not recommended in excess of 2,000 ft. Above sea level Category III Type B Water Heater
CANADIAN HIGH ALTITUDE RATING
Altude 0-2000 feet
Input (btu/hr) 170,000
Manifold pressure (in. W.C.) 6.67
CSA/ANSI 221.10.3 CSA 4.3-2021 SUITABLE FOR WATER (POTABLE) HEATING ONLY
FOR YOUR SAFETY
Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliance
This appliance must be installed in accordance with local codes
or, in the absence of local codes, the Naonal Fuel Gas Code,
ANSI Z223.1/NFPA 54 or the CSA B149.1, Natural Gas and
Propane Installaon Code
The unit must be installed on a fire-retardant area and must be away from all combustible materials. Clearance should be 10in to
the left and right side of combustible materials, 16 in. above, 12 in. above the floor, and 6 in. to the front.
This water heater requires a special venting system. Refer to the installation instructions for parts list and methods of installation.
The temperature and pressure relief valve provided by the manufacturer shall be installed at the time of installation of the heater in
the location specified by the manufacturer. Local codes shall govern the installation of relief devices. For safe operation of the
water heater, the relief valve must not be removed or plugged
INDOOR USE ONLY
Eccotemp Systems, LLC
315-A Industrial Road
Summerville, SC 29483
866-356-1992
CHAUFFE-EAU INSTANTANÉ AUTOMATIQUE
MODÈLE # : 6.5GB-ILP Puissance Maximum
d’Entrée 170,000
SÉRIE # : Puissance Minimum
d’Entrée 17,000
TYPE DE GAZ : PROPANE
LIQUIDE SEULEMENT Pression minimale d’arrivée de gaz
8.0” W.C.
(1.99 kPa)
Tension : 120 Volts Pression maximale
d’arrivée de gaz
13’’ W.C.
(3.23 kPa)
Fréquence : 60 Hz Pression d’admission 6.67” W.C.
(1.32 kPa)
Ampères : Moins de 10 Ampères Pression de travail
maximale 150 PSI
Note de Récupéraon:
Telle qu'utilisée dans la présente norme, la quantité d'eau obtenue en multipliant l'indice
d'apport du fabricant en Btu par heure par l'efficacité thermique et en divisant le produit
par 8,25 Btu par gallon. Ceci est basé sur une augmentation de température de 100°F
(37,8 ° C) et une chaleur spécifique nominale pour l'eau de 8,25 Btu par gallon par degré F.
Non recommandé à plus de 2000 pieds au-dessus du niveau de la mer. Chauffe-eau De Catégorie III Type B
CANADIENNE ALTITUDE NOTE HAUT
Altude 0-2000 feet
Input (btu/hr) 170,000
Manifold pressure (in. W.C.) 6.67
CSA/ANSI 221.10.3 CSA 4.3-2021 ADAPTÉ À L’EAU (POTABLE) CHAUFFAGE SEUL
POUR VOTRE SÉCURITÉ
Ne pas entreposer ou uliser de l’essence ou d’autres
vapeurs et liquides inflammables à proximité de cet
appareil ou de tout autre appareil
Cet appareil doit être installé conformément aux codes
locaux ou , en l’absence de codes locaux , le Naonal Fuel
Gas Code , ANSI Z223.1 / NFPA 54 ou le CSA B149.1 , gaz
naturel et propane Code d’installaon
L'unité doit être installée sur une surface ignifuge et doit être éloignée de toutematière combustible. Le dégagement doit être de 10
po à gauche et à droite des matériaux combustibles, de 16 po au-dessus, de 12 po au-dessus du plancher et de 6 po à l'avant.
Ce chauffe-eau nécessite un système de ventilation spécial. Reportez-vous aux instructions d'installation pour la liste des
pièces et les méthodes d'installation.
La soupape de décharge de température et de pression fournie par le fabricant doit être installée au moment de l'installa on de
l'appareil de chauffage à l'emplacement spécifié par le fabricant. Les codes locaux doivent régir l'installa on des disposi fs de
décharge. Pour un fonc onnement sécuritaire du chauffe-eau, la soupape de décharge ne doit pas être enlevée ou bouchée.
UTILISATION À L'INTÉRIEUR SEULEMENT
Eccotemp Systems, LLC
315-A Industrial Road
Summerville, SC 29483
866-356-1992
AUTOMATIC INSTANTANEOUS WATER HEATER
MODEL#: 6.5GB-ING Maximum Input Rang
(Btu per hour): 170,000
SERIAL#: Minimum Input Rang
(Btu per hour): 17,000
GAS TYPE: NATURAL GAS ONLY Minimum Inlet Gas
Pressure:
3.5” W.C.
(.87 kPa)
VOLTAGE: 120 Volts Maximum Inlet Gas
Pressure:
10.5” W.C.
(2.61 kPa)
FREQUENCY: 60 Hz Manifold Pressure: 3.05’’ W.C.
(0.76 kPa)
AMPS: Less than 10 Amperes Maximum Working
Pressure: 150 PSI
RECOVERY RATING:
As used in this standard, the quantity of water obtained by multiplying the manufacturer’s input
rating in Btu per hour by thermal efficiency and dividing the product by 8.25 Btu per gallon. This is
based on a 100°F (37.8°C) temperature rise, and a nominal specific heat for water of 8.25 Btu per
gallon per degree F.
Not recommended in excess of 2,000 . Above sea level Category III Type B Water Heater
CANADIAN HIGH ALTITUDE RATING
Altude 0-2000 feet
Input (btu/hr) 170,000
Manifold pressure (in. W.C.) 3.45
CSA/ANSI 221.10.3 CSA 4.3-2021 SUITABLE FOR WATER (POTABLE) HEATING ONLY
FOR YOUR SAFETY
Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliance.
This appliance must be installed in accordance with local codes
or, in the absence of local codes, the Naonal Fuel Gas Code,
ANSI Z223.1/NFPA 54 or the CSA B149.1, Natural Gas and
Propane Installaon Code.
The unit must be installed on a fire-retardant area and must be away from all combustible materials. Clearance should be 10in to the
left and right side of combustible materials, 16 in. above, 12 in. above the floor, and 6 in. to the front.
T his water heater requires a special venting system. Refer to the installation instructions for parts list and methods of installation.
The temperature and pressure relief valve provided by the manufacturer shall be installed at the time of installation of the heater in
the location specified by the manufacturer. Local codes shall govern the installation of relief devices. For safe operation of the
water heater, the relief valve must not be removed or plugged.
INDOOR USE ONLY
Eccotemp Systems, LLC
315-A Industrial Road
Summerville, SC 29483
866-356-1992
CHAUFFE-EAU INSTANTANÉ AUTOMATIQUE
MODÈLE # : 6.5GB-ING Puissance Maximum
d’Entrée 170,000
SÉRIE # : Puissance Minimum
d’Entrée 17,000
TYPE DE GAZ : GAZ
NATUREL SEULEMENT Pression minimale d’arrivée de gaz
3.5” W.C.
(.87 kPa)
Tension : 120 Volts Pression maximale
d’arrivée de gaz
10.5” W.C.
(2.61 kPa)
Fréquence : 60 Hz Pression d’admission 3.45’’ W.C.
(0.86 kPa)
Ampères : Moins de 10 Ampères Pression de travail
maximale 150 PSI
Note de Récupéraon:
Tel qu’ulisé dans la présente norme, la quanté d’eau obtenue en mulpliant la valeur nom
inale d’entrée du fabricant en Btu par heure par l’efficacité thermique et en divisant le produit
par 825 BTU par gallon. Ceci est basé sur un élévaon de température de 100 ° F, et une
spécificaon thermique nominale de l’eau de 8,25 BTU par gallon par degré F.
Non recommandé à plus de 2000 pieds au-dessus du niveau de la mer. Chauffe-eau De Catégorie III Type B
CANADIENNE ALTITUDE NOTE HAUT
Altude 0-2000 feet
Input (btu/hr) 170,000
Manifold pressure (in. W.C.) 3.45
CSA/ANSI 221.10.3 CSA 4.3-2021 ADAPTÉ À L’EAU (POTABLE) CHAUFFAGE SEUL
POUR VOTRE SÉCURITÉ
Ne pas entreposer ou uliser de l’essence ou d’autres
vapeurs et liquides inflammables à proximité de cet
appareil ou de tout autre appareil
Cet appareil doit être installé conformément aux codes locaux
ou , en l’absence de codes locaux , le Naonal Fuel Gas Code
, ANSI Z223.1 / NFPA 54 ou le CSA B149.1 , gaz naturel et
propane Code d’installaon
L'unité doit être installée sur une surface ignifuge et doit être éloignée de toutematière combustible. Le dégagement doit être de 10 po à
gauche et à droite des matériaux combustibles, de 16 po au-dessus, de 12 po au-dessus du plancher et de 6 po à l'avant.
Ce chauffe-eau nécessite un système de ventilation spécial. Reportez-vous aux instructions d'installation pour la liste des
pièces et les méthodes d'installation.
La soupape de décharge de température et de pression fournie par le fabricant doit être installée au moment de l'installa on de l'appareil
de chauffage à l'emplacement spécifié par le fabricant. Les codes locaux doivent régir l'installa on des disposi fs de décharge. Pour un
fonc onnement sécuritaire du chauffe-eau, la soupape de décharge ne doit pas être enlevée ou bouchée.
UTILISATION À L'INTÉRIEUR SEULEMENT

PLEASE NOTE: 6.5GB IS FOR INDOOR PERMANENT INSTALLATIONS ONLY. THIS MANUAL AND ALL ECCOTEMP CONTENT IS SUBJECT
TO CHANGE WITHOUT NOTICE. PLEASE VISIT WWW.ECCOTEMP.COM/SUPPORT FOR MORE INFORMATION.
ENGLISH
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WARNING: This water heater may not be suitable
for use in manufactured (mobile) homes! Please
check local code restrictions pertaining to
permanent/fixed installations in manufactured homes
in your area.
The purpose of this manual is twofold: one, to
provide the installer with the basic directions and
recommendations for the proper installation and
adjustment of the water heater; and two, to the
owner-operator, to explain the features, operation,
safety precautions, maintenance and troubleshooting
of the water heater. This manual also includes a parts
list.
It is 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 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.
WHAT TO DO IF YOU SMELL GAS
• DO NOT try to light any appliances.
• 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.
FOR YOUR SAFETY!
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.
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.
Use & Care Manual
With Installation Instructions for the Installer
100°F
APPLICATION
Residential
INSTALLATION
Indoor
BTUs
170,000
FLOW RATE
6.5GPM
Tankless Water Heater

PLEASE NOTE: 6.5GB IS FOR INDOOR PERMANENT INSTALLATIONS ONLY. THIS MANUAL AND ALL ECCOTEMP CONTENT IS SUBJECT
TO CHANGE WITHOUT NOTICE. PLEASE VISIT WWW.ECCOTEMP.COM/SUPPORT FOR MORE INFORMATION.
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FOR YOUR RECORDS
Write the model and serial numbers here:
#_______________________________
#_______________________________
You can find them on a label on the water heater
and/or packaging.
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 water heater.
Always read and obey all safety messages. This is
the safety alert symbol. Recognize this symbol as
an indication of Important Safety Information! This
symbol alerts you to potential hazards that can kill
or hurt you and others.
All safety messages will follow the safety alert
symbol and either the word “DANGER”,
“WARNING”, “CAUTION” or “NOTICE”.
These words mean:
DANGER - An imminently hazardous
situation that will result in death or serious
injury.
WARNING - A potentially hazardous
situation that could result in death or serious
injury and/or damage to property.
CAUTION - A potentially hazardous
situation that may result in minor or moderate
injury.
NOTICE: Attention is called to observe a
specified procedure or maintain a specific
condition.
Safety Information
Safety Precautions ..................................3
6.5GB Installation Instructions
Location .....................................................10
Venting .......................................................12
Performance Features ..........................13
Water Connections ................................15
Pressure/Gas Leak Testing ..................16
Relief Valve................................................17
Electrical Connection ............................18
Automatic Drainage .............................. 18
Operating Instructions
Start Instructions ....................................19
Normal Operation..................................20
Care and Cleaning
Anti-Freezing ...........................................20
Maintenance ............................................21
Troubleshooting Tips
Temperature/Water ...............................22
Error Code Guide ...................................23
Temperature Settings ...........................25
Warranty ....................................................26

PLEASE NOTE: 6.5GB IS FOR INDOOR PERMANENT INSTALLATIONS ONLY. THIS MANUAL AND ALL ECCOTEMP CONTENT IS SUBJECT
TO CHANGE WITHOUT NOTICE. PLEASE VISIT WWW.ECCOTEMP.COM/SUPPORT FOR MORE INFORMATION.
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IMPORTANT SAFETY INFORMATION 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.
Failure to properly install the water heater INDOORS as outlined in 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 installed
properly and has an adequate air supply for proper operation. Be sure to
inspect the flue terminal 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 flue terminal inspection.
DANGER!
PROPERLY INSTALL WATER HEATER
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.
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
4. Out of children ‘s reach
Water heater has a main burner flame.
The main burner flame:
1. 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
4. Can be carried from other rooms to the
main burner flame by air currents.
CAUTION
100˚F
Gasoline, as well as other flammable materials and liquids (adhesives,
solvents, paint thinners etc.), and the vapors they produce are extremely
dangerous. DO NOT handle, use or store gasoline or other flammable or
combustible materials anywhere near or in the vicinity of a water heater
or any other appliance. Be sure to read and follow the labels on the water
heater, as well as the warnings printed in this manual. Failure to do so can
result in property damage, bodily injury or death.
WARNING!

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IMPORTANT SAFETY INFORMATION
READ ALL INSTRUCTIONS BEFORE USING
WATER TEMPERATURE SETTING
Safety and energy conservation are factors to be considered when selecting the water
temperature setting. Water temperatures above 125°F can cause severe burns or death from
scalding. The thermostat is adjusted to its lowest temperature position when shipped from the
factory. Be sure to read and follow the warnings outlined on the label pictured below.
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.
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, place a thermometer in the water
stream and read the thermometer.
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 110°F before it was shipped from the
factory.
The illustration to the bottom left illustrates the
Remote Control and how to adjust the water
temperature.
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.
NOTICE: The factory recommended operating
temperatures are between 90°F and 140°F.
DANGER!
Water temperatures over 125°F can cause severe
burns instantly or death 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 avaliable, see manual.
Time / Temperature Relationship in Scales
Water Temperature Time to Product a serious Burn
120 More than 5 minutes
125 1 1/2 to 2 minutes
130 About 30 seconds
135 About 10 seconds
140 Less than 5 seconds
145 Less than 3 seconds
150 About 1 1/2 seconds
155 About 1 second
Table courtesy of Shriners Burn Institute

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Both liquid propane gas (LPG) and natural gas (NG) 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 LPG or NG, 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. Always check with commercial leak
detector or soapy water.
• Gas detectors are recommended in LP and NG applications and their installation should be in accordance
with the detector manufacturer’s recommendations and/or local laws, rules, regulations or customs.
• Water heaters utilizing LPG are different from NG models. A NG water heater will not function safely on
LPG and vice versa.
• No attempt should ever be made to convert the water heater from NG to LPG. 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; liquid propane gas for LPG water heaters and natural gas for NG water heaters.
These units are not certified for any other fuel type.
• LPG 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.
• NG or LPG 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.
• It is recommended that more than one method, such as soapy solution, gas detectors, etc., be used to
detect leaks in gas applications.
Notice: If a gas leak is present or suspected:
• DO NOT attempt to find the cause yourself.
• DO NOT try to light any appliances.
• DO NOT touch any electrical switch.
• DO NOT use any phone in your building.
• Leave the house immediately and make sure your family and pets leave also.
• Leave the doors open for ventilation and contact the gas supplier, a qualified service agency or the
fire department.
• Stay away from the house (or building) until the service call has been made, the leak is corrected
and a qualified agency has determined the area to be safe.
DANGER!
NATURAL GAS AND LIQUEFIED PETROLEUM MODELS

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IMPORTANT SAFETY INFORMATION
READ ALL INSTRUCTIONS BEFORE USING
California Law requires that residential water heaters must be braced, anchored
or strapped to resist falling or horizontal displacement due to earthquake
motions. For residential water heaters up to 52 gallon capacity, a brochure with
generic earthquake bracing instructions can be obtained from: Office of the State
Architect, 400 P Street, 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 water heater only for its intended purpose as described in this
Use and Care Manual.
• Be sure your water heater is properly installed in accordance with local codes
and the provided installation instructions.
• 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
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
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. C22.1Part1, in the absence of local codes.

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Location
This water heater is for INDOOR installation ONLY!
Make sure before installation that the gas type you will
use is the same type on the data plate.
The water heater should be installed by professionals
from your local gas company. Please don’t attempt
installation by yourself. Improper installation may
cause failure or dangerous conditions such as gas
leaking or explosion.
This water heater is an INDOOR model and
must be mounted on a vertical wall. It must
not be installed outdoors or in a confined space. The
water heater should be installed close to the most
frequently used outlet and its position chosen with
safety and service in mind.
Make sure people (particularly children, disabled, and
elderly) will not touch the hot water outlet or the flue
terminal. The flue terminal and air inlet must be clear
of obstruction and shrubbery.
If installed in a public corridor, please assure that the
surrounding area is free of debris, obstruction and
flammable materials.
The water heater must be installed on a fire retardant
area, and must be away from all flammable materials.
Clearance should be 1.75 ft to the left and right side of
flammable materials, and 6.75 ft to the front.
The water heater should be installed in open area
where strong currents are not prevalent
This water heater is of high power and will consume a
lot of oxygen when working, so the installation area
must be well ventilated, and air in and out of the area
has no blockage.
The INDOOR water heater should not be installed in a
corridor with rooms on the both sides or in the closed
corridor.
Take measures to avoid direct wind, rain and snow. The
installation area should be constructed of fire
retardant materials. The power socket connecting the
water heater should be properly grounded. The water
heater must be located so it is not subject to physical
damage, for example, by moving vehicles, area
flooding, etc.
The water heater must be installed vertically with the
water, gas, and power connections on the underside,
pointing toward the ground.
INSTALLING THE 6.5GB WATER HEATER
Failure to properly install the water heater
INDOORS as outlined in this manual can result
in unsafe operation.
Hot and cold water lines should be insulated to
conserve water and energy.
DO NOT install water heater where subject to
vibrations.
Eccotemp does not recommend this water
heater to have its gas, water or power turned
on and or connected while driving or moving any
recreational vehicles, mobile homes, boats and/or
other watercraft. Doing so could cause damage to
your water heater and/or recreational vehicle,
mobile home, boat and/or watercraft. Eccotemp
will not be liable for any damages to either. We
always recommend you check with local
municipalities or agencies for complete rules and
regulations.
DO NOT install the water heater near vents for
heating or cooling. A minimum of 4 feet should be
maintained.
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.
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 appliances.
WARNING: The 6.5GB is to be installed INDOORs
only. In some climates the ambient air temperature will
fall below the temperature in which water freezes 32°
F / 0°C. DO NOT use the 6.5GB water heater in unsafe
freezing conditions because it could damage the water
heater or cause other property damage. Make sure that
all components and controls are suitable for use in the
current temperature before using.

PLEASE NOTE: 6.5GB IS FOR INDOOR PERMANENT INSTALLATIONS ONLY. THIS MANUAL AND ALL ECCOTEMP CONTENT IS SUBJECT
TO CHANGE WITHOUT NOTICE. PLEASE VISIT WWW.ECCOTEMP.COM/SUPPORT FOR MORE INFORMATION.
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Proper operation of the water heater requires air for combustion and
ventilation. Provisions for combustion and ventilation air must comply with
referenced codes and standards.
Combustion and Ventilation Air
This water heater is for INDOOR installation ONLY.
It must NOT be installed outdoors or in a confined space.
Corrosive Atmospheres
The air in beauty shops, dry cleaning establishments, photo processing
labs, and storage areas for liquid and powdered bleaches or swimming
pool chemicals often contain such halogenated hydrocarbons.
An air supply containing halogenated hydrocarbons may be safe to
breathe, but when it passes through a gas ame 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
ame.
The water heater warranty is voided when failure of the heater is due to
operation in a corrosive atmosphere.
NOTICE: The water heater
should not be installed near
an air supply containing
halogenated hydrocarbons.
Inspect Shipment
Inspect the water heater for possible damage. Check the markings on the rating
plate of the water heater to be certain the type of gas supplied corresponds to the
water heater requirements. Verify all included parts are present (see below).
INSTALLING THE 6.5GB WATER HEATER
Instruction Manual
6.5GB BUILDER SERIES
6.5GB-LP
6.5GB-NG
INSTALL
WHOLE HOME T
A
ANKLESS HO
TION, USE AND CARE INSTUR
T WATER HEA
CTIONS
TER
100°F
INDOOR MANUAL
WashDown
Apartment/Condos
TinyHouse Office Cabins
MidSize HomeWholeHome TownHome
Gas Water Heater
100°F
Washer
x 2 pcs.
Wood Screw Anchors
x 2 pcs.
Explosive Screw
x 2 pcs.
3/4” Pressure Relief
Valve 1 pcs.
(Included in Canada
Shipments Only)
x 2 pcs.

PLEASE NOTE: 6.5GB IS FOR INDOOR PERMANENT INSTALLATIONS ONLY. THIS MANUAL AND ALL ECCOTEMP CONTENT IS SUBJECT
TO CHANGE WITHOUT NOTICE. PLEASE VISIT WWW.ECCOTEMP.COM/SUPPORT FOR MORE INFORMATION.
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CLEARANCES FOR INDOOR WATER
HEATER INSTALLATION LOCATIONS
• Clearance in accordance with local installation codes and the requirements of the gas
supplier.
• A vent shall not terminate directly above a sidewalk or paved driveway that is located
between two single family dwellings.
• This water heater is strictly forbidden to be installed outdoors and in the bathroom.
• The water heater shall not be installed under the exhaust fan of the exhaust fan or range
hood.
• There shall be no other gas appliances near the installation of the water heater, and
there shall be no ammable gases, liquid, etc. around it.
• Installation of INDOOR water heaters should avoid the impact of others people’s lives
due to exhaust and noise.
• The water heater must be installed in a well ventilated area (eg. open balcony, patio).
• The distance between the water heater and the surrounding wall (mm).

PLEASE NOTE: 6.5GB IS FOR INDOOR PERMANENT INSTALLATIONS ONLY. THIS MANUAL AND ALL ECCOTEMP CONTENT IS SUBJECT
TO CHANGE WITHOUT NOTICE. PLEASE VISIT WWW.ECCOTEMP.COM/SUPPORT FOR MORE INFORMATION.
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NOTICE: The National Fuel Gas Code (NFGC) mandates a manual gas shut- off valve: See (NFGC) for complete
instructions. Local codes or plumbing authority requirements may vary from the instructions or diagrams provided
and take precedent over these instructions.
This product is a forced type gas water
heater. When powered on the waste gas
will be forced to exhaust outside under the
help of the draught fan.
Rain proof INDOOR gas water heater
Its rain proof design helps to stop the rain
from dropping into the water heater. The
water heater inhales air from outside to
burn and exhaust the gas waste to outside,
the user can operate the water heater
through a remote control.
Temperature control system controls and
coordinates the water, electricity, and gas
to make sure the outlet water temperature
is consistent.
Low start up water pressure
Flame-out protection, if the water heater
ames out suddenly, it will cut o the gas
automatically to make sure a gas leak does
not occur.
PERFORMANCE FEATURES
WARNING
The water heater has an automatic draining
function. When the water inlet pressure of
the water heater exceeds 145 psi - 174 psi,
the water heater will automatically drain.
Please do not place objects around the water
heater to avoid damage caused by water
immersion of the water heater. When the
water heater automatically drains the water,
it indicates that the water system pressure
is too high. After the pressure is reduced or
the water valve is closed, conrm that the
pressure meets the requirement for using
the water heater.
• The appliance will operate at reduced
performance below 49 psi water pressure
• For information relating to burner test
point pressures and injector sizes refer to
the name plate located on the right hand
side of the case for each model.
For information relating to overall
dimensions and connection point refer to
diagrams.
• Installing in areas over 1 mile above sea
level will reduce performance.
NOTES
PRODUCT DIMENSIONS

PLEASE NOTE: 6.5GB IS FOR INDOOR PERMANENT INSTALLATIONS ONLY. THIS MANUAL AND ALL ECCOTEMP CONTENT IS SUBJECT
TO CHANGE WITHOUT NOTICE. PLEASE VISIT WWW.ECCOTEMP.COM/SUPPORT FOR MORE INFORMATION.
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• Mark the wall with a dark mark, then drill three holes with a diameter of 8mm and a depth of 2
3/4 inch, then insert three 1/4 x 2 inch expansion screws into the hole and tighten the screws with
a wrench.
• Hang up the water heater, screw on the 1/4 inch nut and x the heater to the wall.
• Incorrect installation of the heater will aect the normal use of the water heater
WATER HEATER INSTALLATION
TECHNICAL DATA AND DIMENSIONS
PLUMBING NOTES
• When connecting the hot water supply to the xtures of the property a minimum of 6.5 FT
of pipe work must be used between the outlet of the water heater and rst outlet.
(Shown below)
• The hot water line should be
insulated with armaex or similar
pipe insulation.
• When the installation is
completed the temperature is to be
tested at the outlet to conrm the
water temperature does not exceed
the required 122°f (50°c) setting.
• Water pipe size is nominal 1/2
inch from hot water outlet to the
rst outlet.
• Gas pipe size in nominal 3/4 inch.
100°F
6.5 FT
MODEL: 6.5GB ING ILP
GAS INPUT MIN:17,000
MAX:170,000
MIN:17,000
MAX:170,000
AVAILBALE CERTIFICATE CSA,DOE
FLOW RATE(45°F) TEMP RISE 6.34 GPM
PRODUCT DIMENSIONS(INCHES) 26.2 x 17.1 x 7.3
PACAKAGE DIMENSIONS(INCHES) 33.1 x 20.9 x 10
NET WEIGHT(LBS) 39.3
GROSS WEIGHT(LBS) 45
INSTALL TYPE indoor, wall hung
VENTING TYPE category III type B
IGNITION electric
WATER PRESSURE(PSI) 15 - 150
GAS INLET PRESSURE W.C (KPA) min: 3.5(.87), max: 10.5(2.61) min: 8(1.99), max: 13(3.23)
ACTIVATION FLOW RATE(GPM) .55
CONNECTION SIZES 3/4” NPT
RATED POWER SUPPLY(WATTS /
AMPS) 43 / 0.6

PLEASE NOTE: 6.5GB IS FOR INDOOR PERMANENT INSTALLATIONS ONLY. THIS MANUAL AND ALL ECCOTEMP CONTENT IS SUBJECT
TO CHANGE WITHOUT NOTICE. PLEASE VISIT WWW.ECCOTEMP.COM/SUPPORT FOR MORE INFORMATION.
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CONNECTING THE WATER
• All pipes, pipe ttings, valves and other components, including soldering materials, must be
suitable for potable water systems.
• A manual shut o valve must be installed on the cold water inlet to the water heater between the
main water supply line and the water heater.
• Only a gate valve or a ball valve is to be used on the cold water supply.
• Check the cold water pressure. If above 145 psi an approved limiting valve must be tted.
• Before installing the water heater, ush the water line to remove all debris, and after installation
complete, purge the air from the line. Failure to do so may cause damage to the heater. To prevent
water heater water system damage caused by excessive pressure. At the water outlet of the water
heater, it is necessary to install an appropriate pressure relief valve to protect the water system and
user safety. The pressure relief valve complies with ANSIZ21.22/CSA 4.4
• In the hot water system, the temperature rises continuously, and the volume of water expands.
• If the system is equipped with an expansion tank or a exible connection bellows can absorb a
part of the expansion amount, the expansion tank or the soft connection bellows cannot absorb
the pressure relief valve needed to protect the pressure relief valve to protect The entire system
prevents breakage of pipes and other components, so the relief valve pressure setting is generally
selected to be slightly less than the maximum pressure (Pmax) that the entire system can withstand.
• In addition, the pressure cannot be the same as the normal operating pressure, too close to the
normal operation of the pressure relief valve will frequently pressure relief, lower temperature and
pressure relief valve service life.
• In order to prevent the damage of the temperature probe or control system and cause the
continuous heating of hot water to reach 212° F(100°C) vaporization, it is necessary to install a
temperature and pressure safety valve, and the temperature and pressure valve temperature
reaches 210° F(99°C) to relieve the pressure, thereby protecting the entire system. So the safety
valve temperature is generally set to 210° F(99°C).
• There is a wire mesh lter to discourage debris from entering your heater. Clean lter after initial
installation to ensure no debris from the pipe work has clogged it.

• Check the gas type label to make sure that the unit was built for the type of gas you will be using ,
and that the gas inlet pressure is within the appropriate range.
• Gas pressure below the specified range for the water heater and/or insufficient gas volume will
adversely affect performance
• Inlet gas pressure must not exceed the
maximum values, gas pressure above the
specified range will cause dangerous operating
conditions and damage the unit
• Until testing of the main gas line supply
pressure is completed, ensure the gas line to
the water heater is disconnected to avoid any
damage to the water heater
• Always use approved connectors to connect the
unit to the gas line. Always purge the gas line of
any debris before connecting to the water heater.
• Install a manual gas shut-off valve between the water heater and the gas supply line.
• The regulator is preset to factory standards. It is computer controlled and is not to be adjusted by any
person other than a licensed professional.
• When the gas connections are completed, perform a gas leak test either by applying soapy water to
all gas fittings and observing for bubbles or by using a gas leak detection device.
PLEASE NOTE: 6.5GB IS FOR INDOOR PERMANENT INSTALLATIONS ONLY. THIS MANUAL AND ALL ECCOTEMP CONTENT IS SUBJECT
TO CHANGE WITHOUT NOTICE. PLEASE VISIT WWW.ECCOTEMP.COM/SUPPORT FOR MORE INFORMATION.
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SIZING AND CONNECTION SUITABILITY
1) Shut o the manual gas valve on the supply gas line.
2) Open a tap/outlet. The unit should turn on and the air in the gas pipeline should be purged
3) Leave the tap/outlet running until the unit shuts down due to lack of gas supply. Then turn o
the tap/outlet
4) Remove the screw on the
pressure port located on the
gas inlet of the water heater
shown in the diagram to the
right.
5) Connect the manometer to
the pressure port.
6) Re-open the manual gas valve. Check to see that there are no gas leaks.
7) Open some of the xtures that use a high ow rate to turn on the water heater.
8) Check the inlet gas pressure in the position shown in the circle above. When the heater is at
maximum capacity, the gas pressure point must be within the appropriate range.
PRESSURE AND GAS LEAK TESTING
CONNECTING THE GAS

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• Please use sealant tape to seal the thread of pressure relief valve, then install it into Tee valve G3/4
outlet (As shown above).
• Please use sealant tape to seal the thread of water outlet, then install pressure relief valve, tee
valve and water outlet together. Please select a suitable position to install (As shown above).
• Please note that the outlet of pressure relief valve cannot face upward, otherwise it will always
leave some water inside.
• Anti-fouling and anti-scaling, dirt will directly aect the normal function of the safety valve
function. The drain pipe must match the drain port to ensure that the valve does not interfere with
the normal operation of the valve.
• The pressure relief valve outlet can be installed horizontally or vertically, but it cannot make
pressure outlet facing upwards, otherwise it cannot work normally. It is forbidden to block its outlet
The dirt will directly aect the normal function of the safety valve function. It requires hot water
system maintenance of anti-fouling and anti-scaling cleaning.
• The user must check the relief valve at least once a year. When checking, turn o the water
heater’s power supply and gas. Turn on the water inlet switch to create pressure in the water
system. Then gently open relief valve handle until there is water out and then gently close, if there
is no water out, indicating that the valve is invalid, this time should immediately turn o the water
heater water switch and ask the service personnel to deal with.
• Before operating the handle, check the discharge line connecting the valve to ensure that the
water drained from the valve can be drained to a suitable place.
PRESSURE RELIEF VALVE
WIRING DIAGRAM

PLEASE NOTE: 6.5GB IS FOR INDOOR PERMANENT INSTALLATIONS ONLY. THIS MANUAL AND ALL ECCOTEMP CONTENT IS SUBJECT
TO CHANGE WITHOUT NOTICE. PLEASE VISIT WWW.ECCOTEMP.COM/SUPPORT FOR MORE INFORMATION.
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• The water heater must be electrically grounded. Do not attach the ground wire to either the gas or
water piping.
• The water heater requires an AC 120V 60Hz.
• The weather-proof power point should be no more than 3FT from the base of the water heater foreasy
access.
• Install a power switch so that the electrical power can be switched off if necessary.
• If the cord supplied with this appliance must be replaced, it must be replaced with the correct appliance
wiring material supplied by the Manufacturer.
• When servicing or replacing parts within the water heater, label all wires prior to disconnection to
facilitate an easy and error free reconnection. Verify proper operation after servicing.
CONNECTING THE ELECTRIC
WARNING! Turn off the electric power to the water heater and manual gas valve located on
the outside of the unit before beginning gas connection. Confirm the position of the gas inlet. Do
not connect water line to gas inlet.
WARNING! Conversion of this unit from natural gas to propane (LPG) or propane (LPG) to
natural gas cannot be done in the field. Contact your supplier to get the correct unit for your gas
type.

PLEASE NOTE: 6.5GB IS FOR INDOOR PERMANENT INSTALLATIONS ONLY. THIS MANUAL AND ALL ECCOTEMP CONTENT IS SUBJECT
TO CHANGE WITHOUT NOTICE. PLEASE VISIT WWW.ECCOTEMP.COM/SUPPORT FOR MORE INFORMATION.
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CHECK THE WATER HEATER
After the installation of the water heater is completed, it is necessary to check
that the water heater has no air leakage and water leakage, and the ignition
operation is normal, and there is no fault alarm.
FOR YOUR SAFETY, READ BEFORE OPERATING:
• Check the GAS and WATER CONNECTIONS for leaks before startup for the first time.
• Open the main gas supply valve to the unit using only your hand to avoid any spark.
Never use tools. If the knob will not turn by hand, do not try to force it. Forced repair
may result in a fire or explosion due to gas leaks.
• Check the GAS PRESSURE.
• Do not try to light the burner manually. It is equipped with an electronic ignition device
which automatically lights the burner.
• Check for PROPER VENTING and COMBUSTIBLE AIR to the heater.
• Purge the GAS and WATER LINES to remove any air pockets.
• Do not use this water heater if any part has been submersed under water.
INITIAL OPERATION

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NORMAL OPERATION
FREEZE PREVENTION
• Only the pipes and heat exchanger inside the
water heater will be protected.
• Any hot or cold water pipes located outside of the
unit will not be protected.
• Proper protection and insulation of these pipes
will be required to ensure these are protected from
freezing.
1) Turn on the power switch.
2) After conrming power is on, press the remote control power button “ ”
3) Open the inlet water valve and gas valves.
4) Open the water valve (hot water tap), the water
heater will ignite and work, and hot water will ow
out.
5) During the operation of the water heater, if the
power supply suddenly stops, the water heater will
stop working and close the gas valve. When the
power is reset, the water heater with the remote
control can be started by the remote control, and
the water heater without the remote control can be
started after re opening the water.
6) Power failure before operation, the water heater
cannot start to provide hot water service.
WARNING! If freezing conditions are expected, turn off water and gas and drain all water from
the appliance. If power and the automatic frost protection are connect ed freezing will be
prevented.
NOTICE! When freezing temperatures persists consult with a licensed installation professional
for winterization of your product.
NOTICE! Eccotemp recommends all termination hoods have a backflow preventer to assist with
freezing air. Consult with an installation professional for proper installation.
NOTICE! During power outages built in freeze protection will not be activated. Take proper steps
to ensure your water heater doesn’t freeze.