Rinnai Energysaver Es38 Users Manual (1004RFA)

ES38 to the manual 136bb72c-f6c4-4b14-bce6-c975de7272cd

2015-02-05

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Owner’s Operation and Installation Manual for the

ES38 (RHFE-1004RFA)
Energysaver
Gas Direct Vent Wall Furnace
Table of Contents ........... 2
Safety Information .......... 3
Operating Instructions .... 6
Care and Maintenance ... 10
Fault Codes .................... 12
Installation Instructions ... 14
Parts List ........................ 32
Consumer Support ......... 42

WARNING: If the information in these instructions is not
followed exactly, a fire or explosion may result causing
property damage, personal injury or loss of life.
— 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 the gas supplier.

INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
Register your product at www.rinnairegistration.com
or call 1-866-RINNAI1 (746-6241)

This appliance may be installed as an OEM installation in a manufactured home (USA only) or
mobile home and must be installed in accordance with the manufacturer’s instructions and the
Manufactured Home construction and Safety Standard, Title 24 CFR, Part 3280, in the United
States, or the Mobile Home Standard, CAN/CSA Z240 MH Series, in Canada. This appliance
is only for use with types of gas indicated on the rating plate. A conversion kit is supplied with
the appliance.
This appliance may be installed in an aftermarket, permanently located, manufactured home
(USA only) or mobile home, where not prohibited by local codes.
This appliance is only for use with the type of gas indicated on the rating plate. This appliance
is not convertible for use with other gases, unless a certified kit is used.

Table of Contents
Consumer Safety Information
Safety Definitions ............................................. 3
Safety Behaviors and Practices ....................... 3
Safety Features ................................................ 4
Specifications
Appliance Specifications .............................. 4, 5
Features ........................................................... 5
Flue Manifolds .................................................. 5
Operating Instructions
Getting to Know your New Heating Appliance 6
Control Panel ................................................... 7
Operating the Heater .................................. 8, 9
Care and Maintenance................................... 10
Before Making a Service Call......................... 11
Fault Codes .................................................... 12
Restart Function ............................................. 13
Troubleshooting ............................................. 13

Installation Instructions
General Instructions....................................... 14
Gas Connection ............................................. 15
Clearances to Combustibles.......................... 15
Flue Terminal Clearances ....................... 16, 17
Dimensions .................................................... 18
Installation Parts ........................................... 19
Drilling Flue Hole ........................................... 20
Attach Wall Brackets...................................... 20
Attach Back Spacers ..................................... 20
Flue Manifold Installation ......................... 21, 22
Extension Kit Installation .......................... 23-25
Connecting the Appliance .............................. 26
Operating Instructions ................................... 27
Cut-Away Diagram......................................... 28
Wiring Diagram .............................................. 29
Ladder Diagram ............................................. 30
Parts List ................................................... 31-41
Consumer Support
Warranty Information ..................................... 42
Limited Warranty...................................... 42, 43

Rinnai Corporation ES38 Manual

Consumer Safety Information
Safety Definitions
This is the safety alert symbol. This symbol alerts you to potential hazards that can kill or hurt you and
others.

DANGER

Indicates an imminently hazardous situation which, if not avoided, will result in death or
serious injury.

WARNING

Indicates a potentially hazardous situation which, if not avoided, could result in death or
serious injury.

CAUTION

Indicates a potentially hazardous situation which, if not avoided, could result in minor or
moderate injury. It may also be used to alert against unsafe practices.

Safety Behavior and Practices

WARNING
• Keep the area around the appliance clear and free
from combustible materials, gasoline, and other
flammable vapors and liquids.
• Never store liquid propane containers indoors.
• Do not use this appliance if any part has been
under water. Immediately call a qualified service
technician to inspect the appliance and to replace
any part of the control system and any gas control
which has been under water.

• This appliance is equipped with a three-prong plug
for your protection against shock hazard and
should be plugged directly into a properly grounded
three-prong receptacle. Do not cut or remove the
ground prong from this plug.
• Any alteration to the appliance or its controls can
be dangerous.
• Do not operate appliance with the panels removed,
cracked or broken. Replacement of the panels
should be done by a licensed or qualified service
person.

CAUTION
• Do not block the warm air discharge. Do not allow
anyone to sleep directly in front of the appliance.
• Due to high temperatures, the appliance should be
located out of traffic and away from furniture and
draperies.
• Children and adults should be alerted to the
hazards of high surface temperature and should
stay away to avoid burns or clothing ignition.
• Young children should be carefully supervised
when they are in the same room as the appliance.
• Clothing or other flammable material should not be
placed on or near the appliance.

• Do not insert items into the louvers.
• Do not spray aerosols near the appliance while it is
operating. Most aerosols contain butane gas which
is flammable.
• Do not unplug the appliance while it is operating or
while the fans are on.
• Do not use bare hands to touch the front louvers
due to high temperatures which may cause burns.
• Wear hand protection when touching the side back
covers, front louver, and rear intake for the
convection fan.

• Any safety screen or guard removed for servicing
must be replaced prior to operating the appliance.

Rinnai Corporation ES38 Manual

Safety Features
• Overheat: The appliance will automatically shut
down when the appliance exceeds a predetermined
temperature.

• Power Surge Fuse: A glass fuse on the PC board
protects against overcurrent. If the fuse blows then
all indicator lamps will be off.

• Flame Failure: The appliance will automatically
shut down if the burner flame is extinguished.

• Spark Detector: The appliance automatically shuts
down if there is an abnormal spark at ignition.

• Power Failure: The appliance will cut off the gas if
it loses electrical power.

• Fusible Link: In case the overheat feature
prevents the temperature from rising then the fusible
link will break shutting off the appliance.

Specifications
Appliance Specifications
Application

For manufactured home (USA only) or mobile home or residential installation
convertible for use with natural gas and liquefied petroleum gases (propane /
LPG) when provision is made for the simple conversion from one gas to the
other.
For commercial setting.
For installation at altitudes up to 10,200 feet (3109 m).

General Description

Forced combustion, forced convection, flued gas furnace

Operation

Push button electronic

Gas Connection

1/2 in female NPT

Gas Control

Electronic

Burners

Stainless steel Bunsen burner

Temperature Control

Electronic thermostat

Ignition System

Electronic spark ignition

Flue System

The flue must be terminated to atmosphere with only flue components listed
with the appliance’s certification. Warranty will be voided if non listed
components are installed.

Humidifier Tray

Capacity - 7 pints (3000 cc)

Electrical Connection

AC 120V, 60 Hz, 121 watts

Weight

90 lbs (41 kg)

Noise Level

37-47 dB

AFUE Rating

Natural Gas: 80.6%

Propane: 82.0%

Rinnai is continually updating and improving products. Therefore, specifications are subject to change without
prior notice.
The efficiency rating of this appliance is a product thermal efficiency rating determined under continuous operating
conditions and was determined independently of any installed system.
4

Rinnai Corporation ES38 Manual

Appliance Specifications
Natural Gas

Propane Gas

Minimum supply gas pressure

5.0 in (127 mm) W.C.

11.0 in (280 mm) W.C.

Maximum supply gas pressure

10.5 in (267 mm) W.C.

13.0 in (330 mm) W.C.

BTU/hour input

Low 10,500

High 38,400

Low 10,500

High 36,500

BTU/hour output

Low 8,400

High 30,720

Low 8,400

High 29,200

Features
• Restarts automatically when ignition or combustion
fails.

• Clean the Air Filter - Indicator Lamp

• Clean Heating Forced Flue Type

• Humidifier Tray

• Easy Operation One-Touch Ignition

• Energy Saving Economy Setting
• Air Flow Directional Louvers

• Sensible Temperature Control Feature

• Direct Vent Easily Installed

• Comfortable Room Temperature Control and
Display

• Proportional Heating Variable Capacity
• Hush! Quiet Operation

• Warm Air Outlet at Floor Level (keeps your feet
warm)

• Modern Design Minimizes Floor Space
Requirements

• Function Lock

• Fault Code Message Display

• Room Temperature Setting Memory

Flue Manifolds
The following flue manifold sizes are
available for different wall thicknesses:

Name

Kit No.

fits walls

S Vent Kit

FOT-150

3 - 4 1/2 in (75 - 115 mm)

A Vent Kit

FOT-151

4 1/2 - 9 1/2 in (115 - 240 mm)

B Vent Kit

FOT-152

9 1/2 - 15 3/4 in (240 - 400mm)

C Vent Kit

FOT-153

15 3/4 - 23 5/8 in (400 - 600 mm)

D Vent Kit

FOT-154

23 5/8 - 31 1/2 in (600 - 800 mm)

Rinnai Corporation ES38 Manual

Operating Instructions
Getting to know your new heating appliance

Rinnai Corporation ES38 Manual

Control Panel
All buttons beep when operated.

TEMPERATURE
DISPLAY
SHOWS EITHER THE
TEMPERATURE OR
CODED ERROR
MESSAGES.

ON/OFF BUTTON
Easy operation
One touch ignition

〈CONTROL PANEL 〉

Set Temp
Room Temp

Economy

Temp
Control

ON/OFF

Function Lock

FILTER LAMP
Flashes when filter
is dirty.

TEMPERATURE
BUTTONS
" " adjust temp. to
lower setting.
" " adjust temp. to
a higher setting.

FUNCTION
LOCK
Lamp is "green"
when this feature
is on.

ENERGY SAVING
BUTTON
Lamp is "green "
when this feature is
activated.

OPERATION LAMP
This lamp turns
"green" when power
is on. Lamp will
change to "red"
when burner is on.

〈INDICATOR DISPLAY 〉
Filter

Rinnai Corporation ES38 Manual

Operating the Heater
Turning the heater ON
When you press and release the
ON/OFF button, the Temperature
Level lamps will illuminate, the
combustion fan will begin to run,
and the spark will ignite the main
burner.

Adjusting the Temperature
Set Temp
Room Temp

ON/OFF
Temp
Control

This heater has an automatic ignition system. When
the main burner has lit, the combustion lamp will glow
red, and the spark will stop.
If ignition does not occur after 15 seconds, the
appliance will automatically turn off and the
Temperature Level lamps will flash indicating a fault
code. This may occur when using the appliance for
the first time or if it has not been used for a while. Try
operating the appliance again.
There may be a smell of burning dust or oil the first
time the heater is lit or when the heater has been out
of operation for a long time.
The appliance may make noises after ignition or when
it is turned off. This is normal and is due to the
thermal expansion or contraction of its components.

Function Lock
The first time that the appliance is turned on, the
preset temperature of 72° F will be shown on the
display. Every time the temperature setting is
changed, that temperature setting will be the latest
data appearing on the display the next time the
appliance is turned on.
To change the temperature setting, adjust the
temperature control buttons until the desired setting is
indicated.
When the desired temperature has been set, 10
seconds later, the display will show the current room
temperature.
The thermostat automatically modulates the burner
and the fan to maintain the temperature setting.
The temperature settings available are:
• LO - burner is on minimum combustion
• 60° F - 80° F in two degree increments
• HI - burner is on maximum combustion

Turning the heater OFF

Economy Mode

Press the ON/OFF button. Do not
turn off by unplugging at the power
outlet.

Pressing the Economy button will cause
the appliance to go into Economy Mode
and the green lamp will glow. This
results in the temperature setting being
Economy
reduced by 2° F, 30 minutes after the
room temperature has reached the
temperature setting. After another 30
minutes the temperature setting is
reduced another 2° F. This could result
in the temperature setting being reduced by a
maximum of 4° F. The intent of this mode is to save
energy.

The fan will continue to run for a
short time to prevent the internal
components from overheating.

ON/OFF

When the heater is running at the LO setting, the
Economy Mode does not function.

Rinnai Corporation ES38 Manual

Operating the Heater
Lock

Sensible Temperature Control

This feature locks the
buttons to prevent
unintended operation.

The sensible temperature control feature allows
comfortable heating which matches the conditions in
the room.

Temp
Control

Press the up and
down buttons to
activate and the lamp
Function Lock
will glow. Pressing
and holding the up and down buttons for two seconds
will disengage the Lock.
If the Lock is engaged while the unit is operating, all
buttons will be disabled except for the ON/OFF button.
If the Lock is engaged while the unit is off, then all
buttons will be disabled. The Lock must be
disengaged in order to turn the unit on.

Adding Water to the Humidifier

CAUTION

Do not fill the tray while the
appliance is in operation.
Close the door after filling.
The humidifier tray and
surrounding area are hot
when the appliance is on.

To fill the tray, open the door as shown in the diagram
and pour water into the tray using the spout built into
the door. The air will be humidified as it passes over
the water in the tray.
During operation a small amount of condensation is
produced in the flue system and drains into the
humidifier tray.
If the water overflows from the water level hole, then
do not add any more water.
Humidifier Tray

Based on the information collected by the room
temperature thermistor when the heating starts, the
heating capacity is automatically adjusted to achieve
a comfortable heating effect and to reach the
temperature setting quickly.

Filter Lamp
If the filter lamp flashes
during operation, check
the air filter for dust. If
dust is present, clean the
filter. See the Care and
Maintenance section. Turn the heater off before
cleaning the filter.

Filter

Adjusting Air Flow Direction

CAUTION

Do not adjust the air flow
louvers while warm air is
flowing.

The vertical louvers may be adjusted to move the air
flow more to the right or to the left.
Use a screw driver or similar object to bend each
louver to the desired position.
Do not bend repeatedly (no more than 5 times) or else
the louver will break.
The horizontal louver (which determines the vertical air
flow direction) is fixed and cannot be adjusted.

Max. Fill Line

Access Door

Pull

Filler Spout
Do not force door open too far.
Close door during operation.

Rinnai Corporation ES38 Manual

Care and Maintenance
Maintenance

Filters

All maintenance and service are to be performed by a
qualified service technician, preferably one who has
attended Rinnai service training classes on the Direct
Vent products.

Dirty filters reduce the air flow and the appliance’s
ability to produce heat. The filters should be cleaned
frequently during the heating season. If the filters
become blocked the filter indicator lamp will flash and
the appliance will beep. Eventually the appliance will
turn off and the Temperature Level lamp 14 will light,
indicating a fault code.

The appliance should be inspected annually by a
qualified service technician. More frequent cleaning
may be required due to excessive lint from carpeting,
bedding material, etc. It is imperative that control
compartments, burners, and circulating air passage
ways of the appliance be kept clean.
Any screen or guard removed for servicing the
appliance must be replaced prior to operating the
appliance. Clean as follows:
1. Turn heat off. Allow to cool for one hour.
2. Remove the front panel by removing two screws.
3. Use pressurized air to remove dust from the main
burner, heat exchanger, and fan blades.
4. Use soft dry cloth to wipe cabinet.
Do not use wet cloth or spray cleaners on the burner.
The flue should be inspected annually for blockages or
damage.
Motors are permanently lubricated and do not need
periodic lubrication. Keep fan and motor free of dust
and dirt by cleaning annually.

To clean the filters, the
appliance should be OFF
and cool. Remove the
filter and clean it using a
soft dry cloth or vacuum.
If the filter is greasy wash
with warm soapy water,
rinse, and dry
completely.

Visual Inspection
of Flame
Check that the burner flames are operating normally.
The flame can be seen through the circular window
through the louvers.
When operating normally the burner flame should
appear as long, clear, blue, stable, streaks. Yellow
flames or an orange color is abnormal and
maintenance is required.

Verify proper operation after servicing.

Care of Exterior
Dampen soft cloth with warm water. Wring water out
well and wipe the unit.
Do not use volatile substances such as benzene or
thinners. They cause fading of the paint and
deformation of the resin.

CAUTION
Prevent dust from accumulating on the power cord,
side covers, and parts behind the appliance.

Snow Accumulation
Keep the area around flue terminal free of snow and
ice. The appliance will not function properly if the
intake air or exhaust is impeded by obstructions.
Refer to the Flue Terminal Clearances. The clearance
in Ref. A should be maintained from any snow
accumulation.
10

AIR FILTERS

Rinnai Corporation ES38 Manual

Before Making a Service Call
Before making a service call please check the following:

At Ignition:
Heater does not operate.

Is the heater plugged in?
Have the fuses or breaker blown at the fuse box / breaker panel?
Is there a power failure?
Is the air filter blocked?
Is anything blocking the outlet for the hot air?
Is the flue blocked?

Warm air does not flow when the burner
lights.

The fan is started automatically after a short delay.
This is to allow the heat exchanger to warm up, helping to avoid cold draughts.

Smoke or strange smells are produced
on the first trial light up after installation.

This is caused by grease or oil and dust on the heat exchanger and will stop
after a short time.

Sharp clicking noises at ignition, or when
unit cuts down on the thermostat, or goes
out.

This is simply expansion noise from the heat exchanger.

During Combustion:
Clunking noise when the thermostat
operates.

This is the sound of the solenoid gas valves opening and closing.

Unit is not heating room.

Is the air filter blocked?
Is the set temperature high enough?
Is the warm air outlet blocked by anything?
Are the doors and windows of the room closed?
Was the appliance correctly sized for the space?

Air filter is blocked or the louvers are
blocked or obstructed.

Allow heater to cool, clean air filter, operate again.

Heater will not re-ignite after overheating.

Even after unit has cooled down, the heater does not ignite again. Repair is
necessary.
Contact a qualified / authorized service provider.

When the unit is turned off.
Convection fan continues to run after
turning OFF.

This is to remove the residual heat from the heat exchanger. The fan will stop
when the heater cools down.

Other Points:
Steam is discharged from the flue terminal .

High efficiency appliances tend to discharge water vapor on cold days. This
is normal.

Unit cuts off without apparent reason.

Check whether filters are blocked. Dirty filters will cause the heater to overheat.

Power Failure.

Switch OFF, then ON again when power is restored to re-set controls.

Rinnai Corporation ES38 Manual

Fault Codes
If there is a malfunction the appliance may shut down
as a safety precaution and display a fault code to
assist in diagnosing the problem. The fault code will
flash in the display on the control panel. When making
a service call, this code will assist with diagnosing the
fault.
CODE DISPLAYED

You may be able to clear the fault code by turning the
heater off and then on again. If the fault code remains
or returns on the next operation, contact Rinnai or your
nearest service agent and arrange for a service call.

FAULT

REMEDY

Ignition Failure

Check that gas is turned ON.
Check that the vent termination is not
blocked.
Refer to the Restart Function explanation.
Service call if repeated.

Overheat

Clean filter.
Service call if repeated. [1]

Room Overheat

Lower room temperature to less than 104°F
(40°C).

Room Temperature Sensor
Faulty

Service call.

Overheat Temperature Sensor
Faulty

Service call.

Sensor Breakdown

Service call.

Sparker Failure

Service call.

Combustion Fan Failure

Service call.

Faulty ON/OFF Switch

Service call.

Faulty Solenoids

Service call.

Faulty Flame Rod

Service call.

Communication Error

Turn heater OFF, then ON again.

Flue Block

Check around the flue terminal for blockage.
[2]

32
33

[1] Remove any obstructions. The flue needs to be kept clear to expel exhaust gases. If the appliance fails to
operate contact a qualified service agency.
[2] If the fusible link needs replacement, it must be done by a qualified service agency. In addition, the cause of
the overheat needs to be determined. The fusible link is a one use safety device that breaks to shut off the
appliance.

Rinnai Corporation ES38 Manual

Restart Function
If the appliance fails to ignite, the appliance will attempt ignition after 1 hour. The “Ignition Failure” fault code, 11,
will appear during that hour and disappears after a successful ignition. If ignition fails again, then the fault code
will remain and another attempt to ignite will occur in 1 hour. The fault code is not stored in the fault code history.
If the flame is extinguished during forced combustion then the appliance will attempt ignition after 1 hour. The
“Ignition Failure” fault code, 11, will appear during that hour and disappears after a successful ignition. Forced
combustion takes place for about 15 seconds after ignition. After this time, the temperature control logic controls
the combustion.
If the flame is extinguished (burner combustion failure) while the temperature control logic is operating the
appliance, then the appliance will immediately attempt ignition. No fault code will appear.

Takes too long to
warm the room

Noisy ignition

Smell of gas

Combustion stops
during operation

Unusual combustion

Cause

No ON indicator

Problem

Burner doesn’t ignite

Troubleshooting

Remedy

Not Plugged In

Plug In

Power Failure

Push On/Off button to attempt
restart after power is restored.

(Initial Installation)
Air In Gas Pipe

Purge air
(Installer)

Gas Filter Blocked

Service Call

Miss Ignition

Service Call

Flue terminal obstructed

Clear obstruction

Flue manifold not connected

Service Call

Louver obstructed

Clear obstruction

Air filter blocked

Clean filter

Gas Escape

Service Call

Function Lock Set

Cancel Function Lock

Gas turned off at meter, tank,
or valve.

Turn gas on

Rinnai Corporation ES38 Manual

Installation Instructions
General Instructions

WARNING
Do not use substitute materials.
Use only parts certified with the appliance.
• A qualified service technician should install the
appliance and inspect it before use.
• If you move, check the gas type in your new area.
The local gas authority will be able to advise on
local regulations.
• The installation must conform with local codes or, in
the absence of local codes, with the National Fuel
Gas Code, ANSI Z223.1/NFPA 54, or the Natural
Gas and Propane Installation Code, CSA B149.1.
• A manufactured home (USA only) or mobile home
OEM installation must conform with the
Manufactured Home Construction and Safety
Standard, Title 24 CFR, Part 3280, or, when such a
standard is not applicable, the standard for
Manufactured Home Installations, ANSI/NCSBCS
A225.1, or the standard for Gas Equipped
Recreational Vehicles and Mobile Housing, CSA
Z240.4.
• The appliance, when installed, must be electrically
grounded in accordance with local codes or, in the
absence of local codes, with the National Electrical
Code, ANSI/NFPA 70, or the Canadian Electrical
Code, CSA C22.1.
• Appliance input ratings are based on sea level
operation and need not be changed for operation up
to 2000 ft (609.9 m) elevation. For operation at
elevations above 2000 ft (609.9 m), refer to the
Conversion Manual.
• The appliance and its appliance main gas valve
must be disconnected from the gas supply piping
system during any pressure testing of that system at
test pressures in excess of 1/2 psi (3.5 kPa).

• This appliance discharges a large volume of warm
air next to the floor. Any particles in the air such as
cigarette smoke could cause discoloration in nylon
carpets containing dyes or vinyl surfaces.
• This appliance is not designed to built in.
• This appliance is only for use with the type of gas
indicated on the rating plate. This appliance is not
convertible for use with other gases unless a
certified kit is used. If conversion of the unit is
needed, conversions must be performed by a
qualified service provider at the owner’s expense.
• This appliance must not be connected to a chimney
flue serving a separate solid-fuel burning appliance.
• Rinnai suggests that a dedicated electrical circuit
with a 120VAC, 60 hz, 10 amp power source be
used.
• A test plug are provided for testing of manifold
differential pressure. It is located on the modulating
gas valve.
• The appliance should be correctly sized for the
space it is required to heat.
• Follow the installations instructions and those in
Care and Maintenance for adequate combustion
and ventilation air.
• The flow of combustion and ventilation air shall not
be obstructed.
• Clearances to access the appliance during servicing
are 2 inches (50 mm) from the sides, 40 inches (1
m) from the front, and 10 inches (250 mm) from the
top.

NOTICE

• The appliance must be isolated from the gas supply
piping system by closing its equipment shutoff valve
during any pressure testing of the gas supply piping
system at test pressures equal to or less than 1/2
psi (3.5 kPa).
• If the flooring is carpet, tile, or other combustible
material other than wood, then the appliance must
be installed on a metal or wood panel extending the
full width and depth of the appliance.

Rinnai Corporation ES38 Manual

If installation is at a location above
2001 ft (610 m), then follow the Adjust
Gas Pressure Settings procedure in
the Conversion Manual.
If installation is at or below 2000 ft
(610 m) then the pressure settings do
not need to be adjusted.

Gas Connection

WARNING
When connecting the gas valve or other gas
components in the gas line, use a backup wrench to
ensure the connection is gas tight.
• The gas supply line shall be gas tight, sized and so
installed as to provide a supply of a gas sufficient to
meet the maximum demand of the heater without
loss of pressure.
• A shut off valve and appliance connector valve
should be installed in the upstream of the gas line to
permit servicing.
• Flexible pipe and any appliance connector valve
used for gas piping shall be types approved by
nationally recognized agencies.
• Any compound used on the threaded joint of the gas
piping shall be a type which resists the action of
liquefied petroleum gas (propane / LPG).

• After completion of gas pipe connections all joints
including the heater must be checked for gas
tightness by means of leak detector solution, soap
and water, or an equivalent nonflammable solution,
as applicable. (Since some leak test solutions,
including soap and water, may cause corrosion or
stress cracking, the piping shall be rinsed with water
after testing, unless it has been determined that the
leak test solution is non-corrosive.)
• Check the gas supply pressure immediately
upstream at a location provided by the gas
company. Supplied gas pressure must be within the
limits shown in the Specifications section.
• Refer to an approved pipe sizing chart if in doubt
about the size of the gas line.
• Install manual gas cut-off valve so that it can be
accessed for easy operation. Do not conceal
manual cut-off valve behind back spacer.

Clearances to Combustibles
When determining where to install the appliance the
clearances to combustibles shown in the figure must
be followed. Also refer to the Safety Behaviors and
Practices section. The clearance to combustibles from
the top is zero.
Rinnai recommends 10” (250 mm) clearance on both
sides for servicing.

10"(250mm)
0"
2"
(50mm)
2"
(50mm)

40" (1m)

Rinnai Corporation ES38 Manual

SNOW

Clearance in
Ref. A also
applies to
anticipated
snow line

TERMINATION

Rinnai Corporation ES38 Manual
B

OPERABLE

FIXED
CLOSED

INSIDE
CORNER DE TAIL

OPERABLE

FIXED
CLOSED

AREA WHERE
TERMINAL IS NOT
PERMITTTED

VENT TERMINAL

AIR SUPPLY INLET

Flue Terminal Clearances

Flue Terminal Clearances
Ref
A

Description
Clearance above grade, veranda,
porch, deck, or balcony. (Take into
account the anticipated snow line)

Canadian Installations

US Installations

12 inches (30 cm)

6 inches (15 cm) for
appliances < 10,000 BTUh;
12 inches (30 cm) for
appliances > 10,000 BTUh
and < 100,000 BTUh,
36 inches (91 cm) for
appliances > 100,000 BTUh

6 inches (15 cm) for
appliances < 10,000 BTUh;
9 inches (23 cm) for
appliances > 10,000 BTUh
and < 50,000 BTUh,
12 inches (30 cm) for
appliances > 50,000 BTUh

Clearance to window or door that may
be opened

Clearance to permanently closed

Vertical clearance to ventilated soffit,
located above the terminal within a
horizontal distance of 2 feet (61 cm)
from the center line of the terminal

Clearance to unventilated soffit

Clearance to outside corner

Clearance to inside corner

20 inches (50 cm)

Clearance to each side of center line
extended above meter/regulator
assembly

3 feet (91 cm) within a height
15 feet (4.5 m) above the
meter/regulator assembly

Clearance to service regulator vent

3 feet (91 cm)

6 inches (15 cm) for
appliances < 10,000 BTUh;
12 inches (30 cm) for
appliances > 10,000 BTUh
and < 100,000 BTUh,
36 inches (91 cm) for
appliances > 100,000 BTUh

6 inches (15 cm) for
appliances < 10,000 BTUh;
9 inches (23 cm) for
appliances > 10,000 BTUh
and < 50,000 BTUh,
12 inches (30 cm) for
appliances > 50,000 BTUh

Clearance to nonmechanical air supply
inlet to building or the combustion air
inlet to any other appliance

Clearance to a mechanical air supply
inlet

6 feet (1.83 m)

3 feet (91 cm) above if within
10 feet (3 m) horizontally

Clearance above paved sidewalk or
paved driveway located on public

7 feet (2.13 m) 1

Clearance under veranda, porch, deck,
or balcony

12 inches (30 cm) to nonflammables 2
24 inches (60 cm) to
flammables 2

1 A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single
family dwellings and serves both dwellings.
2 Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.
∗For clearances not specified in ANSI Z223.1/NFPA 54 or CSA B149.1, clearances are in accordance with local
installation codes and the requirements of the gas supplier.

Rinnai Corporation ES38 Manual

Dimensions
inches (mm)

14 1/16" (357.5)

36 5/8" (930)
12 7/16" (316)

28 7/16" (723)
11 13/16" (300)

GAS CONNECTION

7 7/8" (200)

4 9/16" (116)

15 5/8" (397)

10 7/8"
(R277)

13" (330)

6 5/16"(160)

26 3/8" (670)

Cavity Opening

6 1/2" (165)

9 13/16" (250)

23 3/8" (593)

13 3/4" (R350)

Rinnai Corporation ES38 Manual

Installation Parts
The following items are included with the appliance:

Flue Manifold .......................1

Spare rubber seal...........................1
(‘A’ Flue units only)

“A” Vent Kit, FOT-151

(For weatherboard installations)

Back Spacer
Set

Wall
Brackets

Insulation
Clip

Plastic tie for
air inlet

(M4)

7
For Back Spacer Set

(M5)

4
For Wall Brackets

Air inlet hose

1
1

(M4× 20)
For Flue Lock Stopper
Vent adaptor

1
3

(M4)
For Flue Manifold
Pipe stopper
A&S

Pipe stopper
E

On/Off Valve

(M4.8× 32)
Wood Screws

7
Wall Bracket Screws

Owner’s Manual
Conversion Manual
Template
Elbow (gas)

Rinnai Corporation ES38 Manual

Drilling Flue Hole

Flue Hole

3 1/8"
(80 mm)

Ensure that there are no gas or water lines, or
electrical circuits in the wall location where the flue
hole is to be drilled.
Drill the flue hole using a 3 1/8 inch (80 mm) drill. A
template is provided. The center of the hole must
be located anywhere within the shaded area, unless
extension kits are used. See the dimensions
diagram.
For weatherboard walls, drill through the center of
the weatherboard from the outside first and then
through the plasterboard.

Attach Wall Brackets
Attach the wall brackets as shown. A template is
provided.

723

593

Wall bracket

Attach Back Spacers
Attach side back spacers to both sides of the
appliance with 2 screws each.

Rinnai Corporation ES38 Manual

Flue Manifold Installation
• The flue manifold must exhaust to the outside. Do
not exhaust into other rooms.
• The flue manifold is not designed to be positioned
under floors or below the heater.

• This appliance can only be used with one of the
five types of Rinnai flue kits. The flue kits and their
dimensions are listed on the previous page.
• Refer to the Flue Terminal Clearances section.

• The termination cannot be vertical.
1. Disassemble the flue manifold
The flue consists of 3 parts:
Inside Connection

• sleeve

Terminal

• inside connection
• outside terminal
Disassemble the flue manifold by first pulling
out the inside connection. To remove the
outer terminal pull and release the two
internal ties and then pull out the outer
terminal.

Sleeve

Clearance to combustibles for the sleeve and
flanges is zero inches.
2. Adjust the sleeve length
Measure wall thickness through previously
drilled 3 1/8 inch (80 mm) hole.
The end of the sleeve should protrude 3/16 3/8 inch (5-10 mm) from the outside wall.

Remove extension
if necessary

The sleeve is threaded for adjustment. Adjust
the sleeve length to wall thickness plus 3/16 3/8 inch (5-10 mm).
NOTE: Do not extend beyond the red line.
For other than the “S” type flue manifold, if a
shorter length is necessary an extension can
be removed. Cut the plastic and remove the
extension.

3. Attach the sleeve
Attach to the inside wall using 3 screws
arranging the flange so that the marking
“TOP” is at the top.

sleeve should extend
3/16 - 3/8 in (5-10 mm)

The flange is offset 2° to allow the
condensate drain to the outside.
3 screws

Rinnai Corporation ES38 Manual

Flue Manifold Installation
4.Install the Terminal
Check that the terminal seal is in place. For
weatherboard walls, add the second seal next
to the terminal seal to compensate for
weather board angle.

Terminal seal

From the outside insert the terminal into the
sleeve with the marking “TOP” at the top.
The left hand side locking tie should be
marked “LEFT”.

Terminal

Locking tie

6. Lock the ties
Pulling hard on the left and right hand ties,
clip the ties over the notches inside the
sleeve. You should be able to pull the ties 2
or 3 notches past the starting point. Cut the
ties, leaving about 3/4 inch (20 mm) past the
notch. Bend the ties back into the sleeve and
parallel to the wall.

Locking ties

7. Insert Inside Connection Assembly
Push the assembly into the terminal tube,
ensuring that the seal is in place on the
inner tube.
Attach the inside connection with 3
screws. The inner connection can still
be turned to install the screws.
3 screws

Rinnai Corporation ES38 Manual

Sleeve

Extension Kit Installation
If necessary, extension kits are available to extend the exhaust line and air intake hose between the manifold and
the appliance. The maximum vent length is 13 feet (4 m) with 2 bends. The bent pipe attached to the appliance
does not count toward the max limit of 2 bends. Any length (horizontal and vertical) in excess of 8 feet (2.4 m)
must be sloped 3° downward toward the flue manifold to allow condensate to drain to the outside. Do not allow
any low points in the exhaust line where condensate will collect.
Vent extensions installed in unconditioned air space must be insulated with high temperature insulation and must
be accessible.
Vent extensions must not be concealed per NFPA 54 and must be accessible allowing inspection and repair.
Decorative covers are available from Rinnai.

Examples

INCORRECT
• Too many bends (limit is 2)
• Air intake hose is above exhaust
pipe

CORRECT

Rinnai Corporation ES38 Manual

Extension Kit Installation

CAUTION
Clearances

Use the pipe stoppers, connectors, clamps, and screws according to these instructions in
order to ensure no leakage of exhaust gases.

exhaust pipe to combustibles

1 inch (25.4 mm)

exhaust pipe to non-combustibles

zero
Exhaust pipe

Clamps

Exhaust pipe

Both the exhaust line and air intake hose are
supported by clamps which are attached to the wall.
A wall fixture can be used to offset the clamp from the
wall. Use Screw B to attach the wall fixture to the
wall. If the wall fixture is not used then use Screw A
and the nut to attach the clamp to the wall.
The air intake hose should always be underneath the
exhaust line so that in case the air intake hose sags it
will not come into contact with the exhaust line.

Air intake hose
Air intake hose

Installing the Exhaust Line
The exhaust line is connected between the bent pipe
at the rear of the heater and the exhaust port on the
flue manifold.

Male end

To connect exhaust pipes with other straight pipes or
bends, fit the male end into the female end. Use pipe
stopper A to clamp the connection.

Female end

Pipe stopper B

Pipe stopper A

Use pipe stopper B to fix the length on the adjustable
exhaust pipes. Do not extend these pipes beyond the
red line.
Do not cut the exhaust pipe. Use the adjustable
pipes if necessary.
To bend the elbow, insert exhaust pipes into both
ends for additional leverage. Bend to desired angle.

Adjust the angle

Do not straighten the bent pipe attached to the
appliance.

Connecting the Air Intake Hose
The air intake hose is connected between the air
connection at the rear of the heater and the air intake
port on the flue manifold.
Push the air intake hose onto the flue manifold and
secure with the plastic cable tie.
Join air intake hoses by screwing the hose joint half of
its length into the air intake hose and then screwing
another air intake hose into the hose joint.

The lengths of the air intake hose and the exhaust
pipe must be the same in order for the appliance to
operate properly. The hose can be cut to the required
length. Deburr all rough edges. Do not cut the hose
attached to the appliance.
Support the air intake hose with pipe clamps.
Hose joint

air intake hoses

Rinnai Corporation ES38 Manual

Extension Kit Installation
A
B

Extension Kits and Parts

FOT-102(11.4-20.3 inch)
FOT-103(21.0-39.6 inch)

EXHAUST PIPE

PIPE STOPPER A

PIPE STOPPER B

A FOT-102(29.5 inch)
B FOT-103(49.2 inch)
C FOT-114(90.6 inch)

PIPE CLAMP

12 SCREW

10 WALL-FIXTURE

13 SCREW

AIR INTAKE HOSE
8

EXHAUST PIPE(STRAIGHT) 40 inch

BENT ELBOW

TOP STOPPER

NUT

O RING

HOSE JOINT

Item

Description

Part No.

FOT-102

FOT-103

FOT-114

Exhaust Pipe (adjustable)
11.4-20.3 in (290-515 mm)

FOT 111-1

Exhaust Pipe (adjustable)
21.0-39.6 in (533-1005 mm)

FOT 112-1

Exhaust Pipe - 40 in (1016 mm)

FOT 114-3

Air Intake Hose - 29.5 in (750 mm)

RHF 1000-130-e

Air Intake Hose - 49.2 in (1.25 m)

RHF 1000-130-b

Air Intake Hose - 90.6 in (2.3 m)

RHF 1000-130-F

Bent Elbow

FOT 025-4

Hose Joint

FOT 064-8

Pipe Stopper A

1001F-250

Pipe Stopper B

FOT 111-6

Top Stopper

FOT 062-7

Pipe Clamp

FOT 064-11

2 sets

3 sets

4 sets

Wall Fixture

FOT 064-12

Nut

FOT 062-10

Screw A

ZAA0420SC

Screw B

CP-30408

O Ring

M10B-4-49

FOT-115

1
1
1
1
1

Rinnai Corporation ES38 Manual

1
25

Connecting the Appliance
1. Attach flue adapter to the flue manifold with
pipe stopper S.

Pipe stopper S
Flue Adapter

Plastic tie

Flue Manifold

2. Attach the air inlet hose to the flue manifold.
Secure with plastic tie. The unused inlet is
plugged with the rubber cap supplied on the
manifold.

Inlet elbow
Inlet hose

3. Connect the vent sliding tube with pipe
stopper S and E. The sliding tube should
not be extended beyond the red line. The
red line should not be visible after sliding
the tube into the vent outlet.

Flue Manifold
Screw

Sliding Tube

PIPE STOPPER S
PIPE STOPPER A
PIPE STOPPER E

4. Slide the insulation sleeve up to the flue
manifold and slip the securing clip over the
sleeve as shown.

5. Attach the appliance to the wall brackets,
using 2 screws at each bracket.
SCREW
（M5）

6. Attach the back spacer with 3 screws to the
top of the appliance.

7. If necessary, the appliance can be leveled
using the adjustable legs under the front
right and left legs.

Rinnai Corporation ES38 Manual

Operating Instructions
FOR YOUR SAFETY READ BEFORE OPERATING

WARNING

If you do not follow these instructions exactly, a fire or explosion
may result causing property damage, personal injury or loss of life.

A. This appliance does not have a pilot. It is
equipped with an ignition device which
automatically lights the burner. Do not try to
light the burner by hand.
B. BEFORE OPERATING smell all around the
appliance area for gas. Be sure to smell next
to the floor because some gas is heavier than
air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric 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.
C. Use only your hand to push in or turn the gas
control knob. Never use tools. If the knob will
not push in or turn by hand, do not try to
repair it, call a qualified service technician.
Force or attempted repair may result in a fire
or explosion.
D. Do not use this appliance if any part has been
under water. Immediately call a qualified
service technician to inspect the appliance
and to replace any part of the control system
and any gas control which has been under
water.

OPERATING INSTRUCTIONS
1. STOP! Read the safety information above.
2. Set the thermostat to lowest setting.
3. Turn off all electric power to the appliance
using the ON/OFF button.
4. This appliance is equipped with an ignition
device which automatically lights the burner.
Do not try to light the burner by hand.
5. Locate the manual gas valve on the side of
the heater. Turn the manual valve
clockwise to the full OFF position.

Manual Valve
CLOSE

OPEN

6. Wait five (5) minutes to clear out any gas.
Then smell for gas, including near the floor. If
you smell gas, STOP! Follow “B” in the safety
information above. If you don’t smell gas, go
to the next step.
7. Turn the manual gas valve counterclockwise
to the full ON
position.
8. Turn on all electric
power to the
appliance using the ON/OFF button.
9. Set the thermostat to desired setting.
10. Combustion indicator glows red when the
burner is lit and flashes when the burner fails
to ignite. If the appliance will not operate,
follow the instructions “To Turn Off Gas To
Appliance” and call your service technician or
gas supplier. See manual for additional
information.

TO TURN OFF GAS TO APPLIANCE
1. Set the thermostat to lowest setting.
2. Turn off all electric power to the appliance
using the ON/OFF button.
3. Locate the manual gas valve on the side of
the heater. Turn the manual valve
clockwise to the full OFF position.

NOTE: The fan will continue to operate until the
appliance is cool. Do not turn the
appliance off by unplugging it from the
wall. Keep burner and control
compartment clean. See installation and
operating instructions.

Rinnai Corporation ES38 Manual

Cut-Away Diagram

Rinnai Corporation ES38 Manual

Wiring Diagram

CAUTION
Label all wires prior to disconnection when
servicing controls. Wiring errors can cause
improper and dangerous operation.
MARK
MS
R.TH
TF1 ～3
F
ER
POV
TR
FR1 ～3

PARTS NAME
MAIN SWITCH
THERMISTOR
THERMAL FUSE
FUSE
ELECTRODE
MODULATING SOLENOID VALVE
TRANSFORMER
FLAME ROD 1 ～3

If any of the original wire as supplied with the
appliance must be replaced, it must be
replaced with type 18 AWG wire or its
equivalent.
MARK
OH.TH
OHS
FM
SP
SV1 ～3
BL
PS

PARTS NAME
OVERHEAT THERMISTOR
OVERHEAT SWITCH
CONVECTION FAN MOTOR
SPARKER
MAIN SOLENOID VALVE 1
～3
COMBUSTION FAN MOTOR
PRESSURE SENSOR

Rinnai Corporation ES38 Manual

Ladder Diagram

Rinnai Corporation ES38 Manual

Parts List
For replacement parts call Rinnai at 1-800-621-9419.

Rinnai Corporation ES38 Manual

Parts List
For replacement parts call Rinnai at 1-800-621-9419.

Rinnai Corporation ES38 Manual

Parts List
For replacement parts call Rinnai at 1-800-621-9419.

Rinnai Corporation ES38 Manual

Parts List
For replacement parts call Rinnai at 1-800-621-9419.

Rinnai Corporation ES38 Manual

Parts List
For replacement parts call Rinnai at 1-800-621-9419.

Rinnai Corporation ES38 Manual

Parts List
For replacement parts call Rinnai at 1-800-621-9419.

Rinnai Corporation ES38 Manual

Parts List
For replacement parts call Rinnai at 1-800-621-9419.

Rinnai Corporation ES38 Manual

Parts List
QTY
ITEM
001
002
003
004
005
006
007
008
009
010
011
012
013
014
015
016
017
019
020
021
022
024
025
026
027
100
101
102

PART NUMBER

PART NAME

1001F-073-9
1001F-073-4
1004F-2071-6
1004F-2071-3
1004F-2073-10
1004F-2073-6
556F-558-2
ZUAA02SZ
1001F-1514-2
1001F-1514-3
1001F-160-9
1001F-160-5
1004F-2080
1004F-2087
1001F-084-2
1001F-084-3
1001F-163-2
1001F-1323
1001F-162-7
1001F-162-4
1001F-164-4
1001F-1322
1001F-078
551F-015
RHF300-185-1
1001F-1410-2
1001F-1410-9
1001F-1411-4
1001F-1411-5
1001F-165-10
1001F-165-13
1004F-228
1001F-092
1004F-825
1001F-157
550F-0220
550F-0225
1004F-2111
1001F-150-3
1001F-144-3
1001F-147-3

SIDE PANEL I
SIDE PANEL D
TOP PLATE F
TOP PLATE C
OPERATION LID J
OPERATION LID F
FULCRUM
STOPPER
DECORATION PANEL ASS’Y C
DECORATION PANEL ASS’Y D
FRONT PANEL ASS’Y I
FRONT PANEL ASS’Y E
ESCUTCHEON PANEL
ESCUTCHEON PANEL B
LOUVER SUPPORT TRIM B
LOUVER SUPPORT TRIM C
LOUVER ASS’Y B
LOUVER ASS’Y
BOTTOM TRIM ASS’Y G
BOTTOM TRIM ASS’Y D
FILLER ASS’Y D
FILLER ASS’Y
LOUVER DOOR HINGES
FILLER
MAGNET
BACK SPACER LEFT A
BACK SPACER LEFT E
BACK SPACER B RIGHT D
BACK SPACER B RIGHT E
BACK SPACER UPPER ASS’Y J
BACK SPACER UPPER ASS’Y M
AIR FILTER ASS’Y
BACK SPACER SUPPORT
WALL BRACKET B
LEG ASS’Y
RUBBER BRACKET ASS’Y
BASE SUPPORT RUBBER
LAMP HOUSE
HIGH BURNER LEFT ASS’Y C
HIGH BURNER RIGHT ASS’Y C
LOW BURNER ASS’Y C

1004RFA
Beige

1004FA-W
White

2
2
1
1
1
1
1
1

1
1
1
1

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

1
1
1
1
1

1
1
1
2
2
2
2
2
4
1
1
1
1

1
2
2
2
2
2
4
1
1
1
1

103

RHF250-075

DAMPER PANEL

104

1001F-049

BURNER BRACKET PACKING

105

1004F-2022

BURNER BRACKET LEFT ASS’Y

106

1004F-2020

BURNER BRACKET RIGHT ASS’Y

1
1

107

1001F-104-2

FLAME ROD

108

RHF250-038

ELECTRODE CLIP

109

1001F-216

ELECTRODE

110
111

1001F-168
1001F-175

ELECTRODE BRACKET
ELECTRODE SEAL PACKING

1
1

Rinnai Corporation ES38 Manual

Parts List
QTY
ITEM
112
113
114
115
116
117
118
119
120
121
122
123
124
126
127
129
137
138
139
140
141
142
143
144
147
148
149
150
151
152
153
154
155
157
158
159
160
161
162
163
164
165

PART NUMBER

PART NAME

RHF250-076
1004F-2031
1004F-2036
1001F-042
1001F-041
1004F-2066
1004F-2065
1004F-2064
M10B-4-8
1001F-101-2
CP-30488
1004F-2030
RHFE1004-0130
1001F-008-2
1001F-106-1
BRR37-244
1001F-138-2
RHF1000-167
300FT-14
300FT-15
1004F-2013
1001F-115
1004F-2048
1001F-142-2
1001F-143
1001F-169
1001F-021-1
1001F-021-2
1001F-183
RHF1000-174
RHF1000-142-a
1001F-131
1001F-132-2
1004F-530
1004F-401
1001F-250
1001F-1730
1001F-111
RHF1000-145
431F-1900
RHF1000-132
RHF1000-130-d

AIR SHUTTER ADJUSTMENT
MAIN INJECTOR
MAIN INJECTOR
BURNER SHIELD LEFT
BURNER SHIELD RIGHT
INTERCONNECTION C ASS’Y
INTERCONNECTION B ASS’Y
INTERCONNECTION A ASS’Y
O-RING
INTERCONNECTION CLIP
INTERCONNECTION BRACKET
INTERCONNECTION BRACKET
GAS CONTROL ASS’Y A
VALVE BRACKET B
REVOLVING STOPPER A
ON/OFF VALVE ASSEMBLY
MAIN HEAT EXCHANGER ASS’Y B
INLET FLANGE PACKING
GLASS WINDOW PACKING
VIEWING GLASS
GLASS CLIP
BLANKING PANEL
OT.TH BRACKET
SUB HEAT EXCHANGER No.1 ASS’Y B
SUB HEAT EXCHANGER No.2 ASS’Y
SPACER
SUB HEAT EXCHANGER CLIP A
SUB HEAT EXCHANGER CLIP B
SUB HEAT EXCHANGER B ASS’Y
HEAT EXCHANGER BRACKET SLIP
O-RING A
EXHAUST ELBOW ASS’Y
SLIDE PIPE B
EXHAUST ADAPTOR B ASS’Y
SLIDE PIPE STOPPER
EXHAUST PIPE STOPPER ASS’Y
EXHAUST PIPE STOPPER S ASS’Y
COVER
ELBOW COVER STOPPER
FLUE ASS’Y
AIR INTAKE ELBOW
AIR INTAKE FLEXIBLE HOSE

1004RFA
Beige

1004FA-W
White

2
2
1
1
1
1
1
1
6
1
1
1
1
1
1
1
1
1
2
2
2
1
1
1
1
1
1
1
1
2
3
1
1
1
1
1
1
1
1
1
1
1

166

1004F-2032-1

AIR INLET

167

1004F-2033

AIR INLET PACKING

168

1004F-2052-1

SENSING TUBE A

169

1004F-2052-2

SENSING TUBE B

170

1001F-158

AIR INTAKE DUCT

171

1001F-053

SEAL PACKING

172

1001F-153-2

COMBUSTION FAN CASING

178
180

CP-30310
1004F-2082

SCREW FOR MOTOR
COMBUSTION FAN TOTAL ASS’Y

3
1

Rinnai Corporation ES38 Manual

Parts List
QTY
ITEM PART NUMBER

PART NAME

181
192
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
419
420
421
422
423
424
425
426
427
430
431
432
433
435
436
700

CAP
BUSH RE-INFORCED BOARD
REAR PANEL ASS’Y
FRAME LEFT ASS’Y
FRAME RIGHT ASS’Y
WARM AIR SEAL PACKING
CONVECTION FAN SUPPORT B
TOP PANEL SUPPORT
FRAME CORNER
TOP PANEL REINFORCEMENT
FRAME CORNER ASS’Y
CONVECTION MOTOR
CONVECTION MOTOR BRACKET
CONVECTION FAN A
CONVECTION FAN B
FAN CASING ASS’Y
BELL MOUTH
HEAT SHIELD BOARD B ASS’Y
SEAL PACKING
VIEWING WINDOW PANEL
O.H.S. PROTECTOR
ELECTRODE VIEWING PANEL
ELECTRODE COVER
O.H.S. BRACKET
OVERHEAT SWITCH
WATER LEVEL INDICATOR
WATER LEVEL LABEL
HUMIDIFIER TRAY
TRANSFORMER BRACKET
P.C.B. SUPPORT
THERMISTOR HOLDER
POWER SUPPLY CABLE BRACKET
EDGE
CONVECTION MOTOR SUB ASS’Y
SPEED CLIP
OPERATION P.C.B ASS’Y F
OPERATION P.C.B ASS’Y G
INDICATOR ASS’Y
IGNITOR ASS’Y
TRANSFORMER
MAIN P.C.B. TOTAL ASS’Y

702
703
704
705

304F-9112
1004F-2088
1001F-186-1
1001F-154
1001F-156
1001F-112
1001F-004-2
1001F-066
1001F-064
1001F-110
1004F-2006
ES-02051
550F-0903
1004F-308-1
1004F-308-2
1001F-152
RHF1000-89
1001F-159-2
RC-223-21-1
1001F-137
302F-0506
1001F-062
1001F-070
1001F-217
ES-01131
1001F-172
550F-1418
1001F-037
1004F-2016
CP-90436-3
RC-312-628
RC-329-1033
1004F-2009
1004F-2085
CP-90077-1
1004F-2075
1004F-2075-2
1004F-2078
EI-161
ET-251
1004F-2310

1004RFA
Beige

1004FA-W
White

1
2
1
1
1
1
1
1
1
1
1
1
2
1
1
2
2
1
2
2
1
1
1
2
1
1
1
1
1
4
1
1
1
1
2
1

1
1
1
1

706

1004F-2051

PRESSURE SENSOR

707

CP-90466-3

POWER SUPPLY CABLE ASS’Y

708

1004F-2054

MOTOR LEAD ASS’Y B

709

1004F-2053

SENSOR LEAD ASS’Y

710

1004F-2059

FR LEAD ASS’Y

711

1001F-1667-3

HIGH TENSION CORD ASS’Y

712

1004F-2057

THERMISTOR LEAD ASS’Y

713
714
800

1004F-2058
1004F-2061
CP-74167-27

SV.IG LEAD ASS’Y
TF LEAD ASS’Y
RATING PLATE

1
1
1

Rinnai Corporation ES38 Manual

Parts List
QTY
ITEM PART NUMBER

PART NAME

800
801
801
802
803
804
805
806
806
807
808
809
810
810
811
812
813
814
850
851
852
853
853
856
901
902
903
904
905
906
907
908
909
910
911
912
913
914

CP-74167-28
CP-74168-27
CP-74168-28
1004F-2093
1001F-1651
556F-2065
1001F-1656
431F-1840
431F-1841
1001F-1654
CP-72062B-2
431F-1860
431F-1862
431F-1863
431F-1830
CP-71747-2
CP-74177-5
CP-74178-5
RHFE1004-0110
RHFE1004-0111
1004F-2040
1004F-2095-3
1004F-2095-4
CP-30324
ZBA0408SC
ZBA0408SZ
CP-30421-1
ZBA0412SZ
ZBB0410SC
ZBD0408SC
ZBD0408SZ
ZEAB0408SZ
ZEAB0408SB
ZEAB0408SC
ZGAA0308SZ
ZAA0506SZ
ZAA0420SZ
ZEDB0408SZ

RATING PLATE
RATING PLATE
RATING PLATE
OPERATION LABEL
FILTER LABEL
CAUTION LABEL
CAUTION MARK
PROPANE STICKER
NG STICKER
EXHAUST CAUTION LABEL
SPEC MARK
POWER SUPPLY CABLE LABEL
GAS CHECK LABEL
GAS CHECK LABEL
EXHAUST CAUTION LABEL
PULL LABEL
RATING PLATE SUPPORT LABEL
RATING PLATE SUPPORT LABEL
OWNER’S OPERATION AND INSTALLATION MANUAL
CONVERSION MANUAL
TEMPLATE
CONVERSION SET(TO NG)
CONVERSION SET(TO LPG)
MALE - FEMALE ELBOW
SCREW
SCREW
SCREW
SCREW
SCREW
SCREW
SCREW
SCREW
SCREW
SCREW
SCREW
SCREW
SCREW
SCREW

915

ZHAA0408SZ

SCREW

916

ZHAD0510SC

SCREW

917

ZDAA0410SZ

SCREW

918

ZIAD0408SZ

SCREW

919

ZRAB04SZ

NUT

920

ZSCA04SZ

WASHER

921

CP-30408

SCREW

922
923
924
925
926
927

ZAA0306SZ
CP-30486-2
ZSCA04SC
ZRAA04SC
ZAA0440UK
ZIAD0410SC

SCREW
SCREW
WASHER
NUT
SCREW
SCREW

Rinnai Corporation ES38 Manual

1004RFA
Beige

1004FA-W
White

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

Consumer Support
Warranty Information
The installer is responsible for your heater’s correct installation.
Please complete the information below to keep for your records:
Purchased from: _________________________________________________________________
Address: _____________________________

Phone: _________________________________

_____________________________
Date of Purchase: __________________________________
Model No.: ________________________________________
Serial No.: ________________________________________
Installed by: ___________________________ Installer’s License No.: _____________________
Address: _____________________________

Phone: _________________________________

Date of Installation: __________________________________

Limited Warranty
Gas Direct Vent Wall Furnace
What is covered?
This Warranty covers any defects in materials or workmanship, subject to the terms stated below. This Warranty extends to
the original purchaser and subsequent transferees, but only while the product remains at the site of the original installation.
This Warranty only extends through the first installation of the product and terminates if the product is moved or reinstalled at a
new location.
How long does coverage last?
Item

Period of Coverage

Heat Exchanger

10 years from date of purchase *

All Other Parts

5 years from date of purchase

Reasonable Labor

2 years from date of purchase

What will Rinnai do?
Rinnai will repair or replace the covered product or any part or component that is defective in materials or workmanship as set
forth. Rinnai will pay reasonable labor charges associated with the repair or replacement of any such part or component. All
repair parts must be genuine Rinnai parts. All repairs or replacements must be performed by an individual or servicing
company that is properly trained, state qualified or licensed to do the type of repair.

Rinnai Corporation ES38 Manual

Limited Warranty - continued
Replacement of the product may be authorized by Rinnai
only. Rinnai does not authorize any person or company to
assume for it any obligation or liability in connection with the
replacement of the product. If Rinnai determines that repair
of a product is not possible, Rinnai will replace the product
with a comparable product at Rinnai’s discretion. If a
component or product returned to Rinnai is found to be free
of defects in material or workmanship, or damaged by
improper installation or damaged during return shipping, the
warranty claim for product, parts and labor may be denied.
* If the Heat Exchanger fails due to a defect in material or
workmanship within the sixth (6) through the tenth (10)
year from the date of purchase, Rinnai will make the
following allowances toward the purchase of a
replacement Heat Exchanger:

Heat Exchanger
Year of Failure

Allowance

50%

40%

30%

20%

10%

How do I get service?
You must contact a state qualified/licensed contractor or authorized service provider for the repair of a product under this
Warranty. For the name of a qualified/authorized service provider please contact your place of purchase, visit the Rinnai
website (www.rinnai.us), call Rinnai at 1-800-621-9419 or write to Rinnai at 103 International Drive, Peachtree City, Georgia
30269.
Proof of purchase is required to obtain warranty service. You may show proof of purchase with a dated sales receipt, or by
registering within 30 days of purchasing the product. To register your appliance, please visit www.rinnairegistration.com. For
those without internet access, please call 1-866-RINNAI1 (745-6241). Receipt of Registration by Rinnai will constitute proof-ofpurchase for this product. However, Registration is not necessary in order to validate this Warranty.
What is not covered?
This Warranty does not cover any failures or operating difficulties due to the following:

•
•
•
•
•
•
•
•
•

accident, abuse, or misuse
alteration
misapplication
force majeure
improper installation (such as but not limited to, condensate damage, improper venting, incorrect gas type, or incorrect gas
pressure)
improper conversion (including conversions for inventory adjustment)
improper maintenance (such as but not limited to vent blockage)
incorrect sizing
any other causes other than defects in materials or workmanship

This Warranty does not apply to any product whose serial number or manufacture date has been defaced.
Limitation on warranties
No one is authorized to make any other warranties on behalf of Rinnai America Corporation. Except as expressly provided
herein, there are no other warranties, expressed or implied, including, but not limited to warranties of merchantability or fitness
for a particular purpose, which extend beyond the description of the warranty herein and further Rinnai shall not be liable for
indirect, incidental, special, consequential or other similar damages that may arise, including lost profits, damage to person or
property, loss of use, inconvenience, or liability arising from improper installation, service or use. Some states do not allow the
exclusion or limitation of incidental or consequential damages, so the above limitation may not apply to you.
Any implied warranties of merchantability and fitness arising under state law are limited in duration to the period of coverage
provided by this limited Warranty, unless the period provided by state law is less. Some states do not allow limitations on how
long an implied Warranty lasts, so the above limitation may not apply to you.
This Warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

Rinnai Corporation ES38 Manual

Rinnai’s other fine products

Rinnai America Corporation
103 International Drive
Peachtree City, GA 30269
TOLL FREE: 1-800-621-9419
www.rinnai.us

Tankless Water Heaters
•
•
•
•
•
•
•
•

Residential and Commercial Applications
Continuous Hot Water
Up to 9.8 GPM
High Energy Efficiency
Propane or Natural Gas
Internal or External Installation
Digital Temperature Control
Small, Compact Design

Direct Vent Furnaces
•
•
•
•
•

High Efficiency
Cool-to-the-touch Cabinet
Blower Included
Vent Terminal A Included
Gas Conversion Kit Included

Direct-Vent Fireplace, RHFE-750ETR
•
•
•
•
•

Up to 83% AFUE Energy Efficiency
Zero-Clearance Installation
Available in Four Options of Fronts
Remotes and Fan Included
Gas Conversion Kit Available

Hydronic Air Handler
•
•
•
•
•

Designed for Use with Rinnai Systems
Domestic Hot Water Priority
Optional Programmable Thermostat
Zero Clearance to Combustibles
Accommodates Standard Cased-Coils

2/2009

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Rinnai Energysaver Es38 Users Manual (1004RFA)

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