Bradford White EVERHOT IGI-180R Series Supplement

Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance
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.
Installation and service must be
performed by a qualified installer,
service agency or gas supplier
WARNING: If the information in
these instructions is not followed
exactly, a fire or explosion may
result causing property damage,
personal injury or death
BRADFORD WHITE EVERHOTTANKLESS GAS WATER HEATER
FOR INTERIOR INSTALLATION
IGI-180R AND IGI-180C MODEL SERIES
INSTALLATION AND OPERATING INSTRUCTION MANUAL
PLACE THESE INSTRUCTIONS ADJACENT TO WATER HEATER AND NOTIFY OWNER TO KEEP FOR FUTURE REFERENCE
Ambler, PA 19002
Tech. Service [phone]
Service Part [phone]
Warranty Service [phone]
Part No.: 238-44958-00C Rev. 7/07
A Spanish language version of these instructions is available by
contacting the company listed on the rating plate.
La versión espãnola de estas instrucciones se puede obtener al
escribirle a la fábrica cuyo nombre aparece en la placa de
especificaciones.

2
This water heater has a limited warranty. The warranty for this water heater is valid only if the
water heater has been installed, maintained and operated in accordance with these instructions.
NOTICE
SECTION I: IMPORTANT INFORMATION
TABLE OF CONTENTS
I IMPORTANT INFORMATION 2 VII GAS CONNECTIONS 40
II SPECIFICATIONS 6 VIII ELECTRICAL CONNECTIONS 42
III GENERAL INFORMATION 9 IX OPERATING INSTRUCTIONS 49
IV INSTALLATION INSTRUCTIONS 10 TEMPERATURE ADJUSTMENT 51
V WATER CONNECTIONS 12 X MAINTENANCE 56
VI VENTING 20 XI PARTS LIST 60
This gas-fired water heater is design certified by CSA International under the American National
Standard, Z21.10.3 (as indicated on the rating plate) and CAN/CGA 4.3-M (as indicated on the rating
plate) available from CSA Standards Association, 178 Rexdale Blvd., Etobicoke, Ontario, Canada
M9W 1R3.
This water heater must be installed in accordance with local codes. In the absence of local codes, it
must be installed in compliance with the National Fuel Gas Code (ANSI Z223.1-Latest Edition), or in
Canada CAN/CGA B149.1 Natural Gas Installation Code (Latest Edition) or CAN/CGA B149.2
Propane Installation Code (Latest Edition).
The following terms are used throughout this manual to bring attention to the presence of hazards at
various risk levels, or to important information concerning product life.
READ CAREFULLY
Indicates special instructions on
installation, operation or
maintenance, which are
important but not related to
personal injury hazards.
NOTICE
Indicates a potentially hazardous
situation, which, if not avoided,
could result in death, serious
injury or substantial property
damage.
WARNING
Indicates potentially hazardous
situation, which, if not avoided,
may result in moderate or minor
injury or property damage.
CAUTION
Indicates an imminently
hazardous situation, which, if not
avoided, will result in death,
serious injury or substantial
property damage.
DANGER

3
DO NOT store or use gasoline or other flammable, combustible, or corrosive vapors and/or liquids in
the vicinity of this or any other appliance.
Failure to properly install the vent and air intake (if applicable) system could result in property damage,
personal injury, or death.
DO NOT install any damaged venting system components. If damage is evident then please contact
the supplier where the water heater was purchased or the manufacturer listed on the rating plate for
replacement parts.
Use only vent terminals provided or factory authorized terminals for venting this water heater.
This water heater is equipped with an adjustable thermostat to control water temperature. Hot water
temperatures required for automatic dishwasher and laundry use can cause scald burns resulting in
serious personal injury and/or death. The temperature at which injury occurs varies with the person’s
age and the time of exposure. The slower response time of disabled persons increases the hazards to
them. NEVER allow small children to use a hot water tap, or to draw their own bath water. NEVER
leave a child or disabled person unattended in a bathtub or shower.
DANGER
Improper installation, adjustments, alteration, service or maintenance can cause property damage,
personal injury or loss of life. Failure to follow all instructions in the proper order can cause personal
injury or death. Read and understand all instructions, including all those provided with the appliance
before installing, starting-up, operating, maintaining or servicing this appliance. Keep this manual and
literature in legible condition with this water heater for reference by owner and service technician.
This water heater requires regular maintenance and service to operate safely. Follow the instructions
contained in this manual.
Installation, maintenance, and service must be performed only by a qualified, skilled and
knowledgeable installer or service provider.
Installation is not complete unless a pressure relief valve is installed into the proper location in the hot
water outlet piping of this water heater.
It is the responsibility of the installing contractor to see that all controls are correctly installed and are
properly operating when the installation is complete.
DO NOT operate this water heater without first being certain it is filled with water.
WARNING

4
DO NOT tamper with or alter the water heater and/or controls.
DO NOT operate water heater with jumpered or absent controls or safety devices.
DO NOT operate water heater if any external part has been under water. Immediately call a
qualified service agency to inspect the appliance and to replace any part of the control system
including gas controls, which has been under water.
DO NOT attempt to use this water heater with any gas other than the type listed on the rating
plate. Do not attempt to convert this water heater for use with a gas other than the type for
which it is equipped. Failure to use the proper gas can create an unsafe condition resulting in
property damage, bodily injury, or death. Consult your local gas supplier or gas company if
there are any questions.
DO NOT operate this water heater if the input rate exceeds the rate shown on the water heater
rating plate.
This water heater contains very hot water under high pressure. Do not unscrew any pipe fittings nor
attempt to disconnect any components of this water heater without positively assuring the water is cool
and is not under pressure. Always wear protective clothing and equipment when installing, starting up
or servicing this water heater to prevent scald injuries. Do not rely on the temperature gauges to
determine the temperature. Do not touch any components unless they are cool.
This water heater must be properly vented and connected to an approved vent system in good
condition. DO NOT operate water heater with the absence of an approved vent system. A clean and
unobstructed vent system is necessary to allow noxious fumes that could cause injury or loss of life to
vent safely and will contribute toward maintaining the water heater’s efficiency.
This water heater is for indoor installation only. The supplied venting system must be used to supply
outdoor air for combustion to the appliance.
This water heater requires its own separate venting system. DO NOT connect the exhaust vent into an
existing vent pipe or chimney.
Water heater materials of construction, products of combustion and the fuel contain carbon monoxide,
nitrogen oxides, aldehydes and/or other toxic or harmful substances which can cause death or serious
injury and which are known to the state of California to cause cancer, birth defects and other
reproductive harm. Always use proper safety clothing, respirators and equipment when servicing or
working nearby this water heater.
WARNING

5
Liquefied petroleum gases/propane gas is heavier than air and will remain at floor level if there is a
leak. Basements, crawl spaces, closets and areas below ground level will serve as pockets for
accumulation of leaking gas. Before lighting, smell all around the appliance area for gas. Be sure to
smell next to the floor.
IF YOU SMELL GAS:
DO NOT try to light any appliance.
DO NOT touch any electric switch; do not use any telephone in your building.
Immediately call your gas supplier from a telephone in another building. Follow the gas
supplier’s instructions.
If you cannot reach your gas supplier, call the fire department.
DO NOT OPERATE THE APPLIANCE UNTIL THE LEAKAGE IS CORRECTED!
WARNING
Flammable items, pressurized containers or any other potential fire hazardous articles must never be
placed on or adjacent to the water heater. Open containers of flammable material must not be stored or
used in the same room with this water heater.
DO NOT USE AN INSULATION BLANKET WITH THIS WATER HEATER. This water heater
meets or exceeds the ASHRAE/IES 90.1b (latest edition) standards with respect to insulation and
standby loss requirements.
WARNING

6
SECTION II: SPECIFICATIONS
Flow Rate vs Temperature Rise Curve for EVERHOTIGI Model Series
*Note: The maximum flow is based upon a minimum water pressure of 30 PSI
Max. Flow Rate @ Degree Temperature Rise
Model No.
Max.
Input
Rating
Btu/hr.
Min.
Input
Rating
Btu/hr.
Temp
Rise
40F 60F 80F 100F 120F 140F
IGI-180R-10N
IGI-180R-10X
IGI-180C-5N
IGI-180C-5X
180,000
15,000 Flow Rate
Gal/Min. 7.2 4.5 3.3 2.6 2.2 1.6
First
Hour
Supply
Gal/Hr.
432 270 198 156 132 96
Max. Flow Rate @ Degree Temperature Rise
Model No.
Max.
Input
Rating
kW/hr.
Min.
Input
Rating
kW/hr.
Temp
Rise
22C 33C 44C 56C 67C 78C
IGI-180R-10N
IGI-180R-10X
IGI-180C-5N
IGI-180C-5X
52.7
4.4 Flow Rate
Liters/
Min. 27.3 17.0 12.5 9.8 8.3 6.1
First
Hour
Supply
Liters/Hr 1638 1020 750 588 498 366

7
EVERHOTIGI Model Series Dimensions
Figure 1

8
SPECIFICATIONS
Dimensions (Inches) Height:
25 5/8”
(65.1 cm)
Width:
13 25/32”
(35 cm)
Depth:
8 13/16”
(22.4 cm)
Outside Vent
Connection:
5” dia.
(12.7 cm)
Venting
Height:
2 21/32”
(6.7 cm)
Above top of
cabinet
Clearances from
Combustible Materials: Top of water heater: 6” (15.2 cm), Front: 6” (15.2 cm), Sides: 2” (5.1 cm), Back: 0”, Floor: 12” (30.5 cm), Vent/Air Intake Connectors: 0”
Maximum/Minimum Gas
Input Rating, Btu/hr. 180,000 maximum / 15,000 minimum for both Natural and L.P. Gases.
Thermal Efficiency 84%
Minimum/Maximum Gas
Supply Pressures: Natural Gas: Minimum: 6.0” w.c., Maximum: 10.5” w.c. Propane Gas: Minimum: 10.0” w.c., Maximum: 13.5” w.c.
Manifold Gas Pressure Natural Gas: 3.7” w.c. maximum input, 0.8” minimum input
Propane Gas: 4.2” w.c. maximum input, 0.9” minimum input
Venting System Direct Vent, Power Vented, To be vented using specified coaxial vent
components
Temperature setting range: 98-160F, Residential models, 98-185F Commercial models with front
panel temperature control
Recommended Minimum
water supply pressure 20 PSI (50-80 PSI for maximum performance)
Maximum Water Supply
Pressure 150 PSI
Electrical Rating 120 volts, 60 Hz,
Electrical Consumption Normal operation: 75 watts, Anti-frost protection (when required): 100 watts
Ignition System Direct Spark Ignition
Water Flow Control Water flow sensor, microprocessor controlled water flow solenoid, bypass
solenoid
Noise Level 49 dbA
Weight 49 Lbs. (22 Kg)

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SECTION III: GENERAL INFORMATION
FEATURES
The Bradford White EVERHOTIGI series tankless water heater is a high output, high efficiency
appliance, which heats the water continuously as hot water is being drawn for use. Unlike tank type
storage water heaters, this water heater does not store hot water. The burner operates whenever there is
a demand for hot water and is off when the hot water flow stops. Hot water is continuously supplied for
any length of time required, as long as the specified flow rates are not exceeded. There is no need to set
the temperature higher than required for sufficient capacity. The EVERHOT water heater has sufficient
capacity to supply several hot water faucets simultaneously. The hot water flow capability will be
dependent upon the temperature of the outlet water selected. More detail can be found at the beginning
of Section II, “Specifications” section in this Installation and Operating Instruction Manual. Your plumbing
professional should determine your hot water requirements before installing this water heater to be sure
the capacity is sufficient for your application.
The IGI series water heaters are designed to be installed on or near an outside wall for indoor
installation only. The water heater is compact (23 1/2” (59.7 cm) H x 13 5/8” (34.6 cm) W x 8”
(20.3 cm) D) and mounts on a wall using the supplied wall bracket. No floor space is needed and
the water heater can be mounted at a height convenient for servicing.
The weight is less than 50 pounds (23 Kg) and can be installed by 1 person.
The burners ignite within 3 seconds of water flow (1/2 gallon/minute (1.9 L/m) minimum) by direct
spark ignition. There is no standing pilot.
A variable speed combustion air blower forces the combustion air supply into the burner
compartment.
Direct vent design uses only outside air for combustion. The venting system is a coaxial design
requiring a single 5 1/4” (13.3 cm) hole through the outside wall or roof. Vent pipe fittings have
internal gaskets for a tight seal to prevent leakage of flue products and combustion air.
The burner flame is continuously monitored and modulated to match the heating requirements of
the water flow. Temperature and flow sensors continually monitor the water flow and outlet water
temperature and adjust the burner and combustion air blower to maintain temperature.
The IGI model series have a digital temperature control integrally mounted to project through the
front panel of the water heater. The outlet water temperature is adjustable from 98-160F for
residential models (IGI-180R series) or 98-185F for commercial models (IGI-180C series). The
front panel temperature control also displays fault codes if the water heater malfunctions to assist
with servicing the water heater. No installation is required for the main temperature control.
In addition to the main temperature controller, up to two optional additional temperature controls
are available on the residential models for setting the water temperature in the bathroom fixtures
with the same temperature range as the main control on the water heater.
The heat exchanger coil is provided with anti-freeze heaters for protection in cold climate
conditions to ambient temperatures as low as -30F (-34C). Drain solenoids should be installed
to drain the water heater in the event of a power failure.
The water heater is very quiet in operation.

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SECTION IV: INSTALLATION INSTRUCTIONS
CAUTION
If building cold water supply has a back-flow preventer, check valve or water meter with check valve,
provisions for thermal expansion of water in the hot water system must be provided.
WARNING
This water heater must be located in an area where leakage of the heat exchanger coil, water line
connections, or the pressure relief valve will not result in damage to the area adjacent to the water heater
or to lower floors of the structure. When such locations cannot be avoided, a suitable drain pan must be
installed under the water heater. The drain pan depth must be suitable for draining and collecting water,
and have a minimum length and width of at least four (4) inches (10.2 cm) measured from the jacket of
the water heater. The drain pan, as described above, can be purchased from your plumbing professional.
The drain pan must be piped to an adequate drain. The piping must be at least ¾ inch (1.9 cm) in
diameter and pitched for proper drainage.
WARNING
Pressure relief valve discharge piping must be piped near floor to eliminate potential of severe burns. Do
not pipe in any area where freezing could occur. Do not install any shut-off valves, plugs or caps to the
temperature and pressure relief valve or piping.
DANGER
Temperature setting should not exceed safe temperature at fixtures. See water temperature control
warning in the “Temperature Adjustment” section of this Installation and Operating Instruction Manual. If
higher preheat temperatures are necessary to obtain adequate booster output, add an ASSE approved
mixing valve for hot water supplied to fixtures.
WARNING
INSTALLATION OF THIS WATER HEATER REQUIRES ABILITY EQUIVALENT TO THAT OF A
LICENSED PLUMBER. PLUMBING, AIR SUPPLY, VENTING, GAS SUPPLY AND ELECTRICAL
WORK ARE REQUIRED.
DO NOT ATTEMPT TO LIGHT ANY GAS APPLIANCE IF YOU ARE NOT CERTAIN OF THE
FOLLOWING:
Liquefied petroleum gases/propane gas and natural gas have an odorant added by the gas
supplier that aids in detection of the gas.
Most people recognize this odor as a “sulfur” or “rotten egg” smell.
Other conditions, such as “odorant fade” can cause the odorant to diminish in intensity, or
“fade”, and not be as readily detectable.
If you have a diminished sense of smell, or are in any way unsure of the presence of gas,
immediately contact your gas supplier from a telephone in another building.
Gas detectors are available. Contact your gas supplier or plumbing professional for more
information.
Liquefied petroleum gases/propane gas is heavier than air and will remain at floor level if there is a leak.
Basements, crawl spaces, closets and areas below ground level will serve as pockets for accumulation
of leaking gas. Before lighting, smell all around the appliance area for gas. Be sure to smell next to the
floor.
IF YOU SMELL GAS:
Do not try to light any appliance.
Do not touch any electric switch; do not use any telephone in your building.
Immediately call your gas supplier from a telephone in another building. Follow the gas
supplier’s instructions.
If you cannot reach your gas supplier, call the fire department.
D
O
N
O
T
O
PERATE THE APPLIAN
C
E
U
NTIL THE LEAKA
G
E I
S
CO
RRE
C
TED!