Rinnai Rice Cooker EX17 (RHFE-433RWTA) Installation Manual

Owner’s Operation and Installation Manual for the

EX17 (RHFE-433RWTA) EX22 (RHFE-558RWTA)

Energysaver ®

Gas Direct Vent Wall Furnace

Table of Contents ........... 2

Safety Information .......... 3

Operating Instructions .... 6

Care and Maintenance ... 22

Fault Codes .................... 24

Installation Instructions...26

Parts List ........................45

Consumer Support ......... 54

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.

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

Operating Instructions

Getting to Know your New Heating Appliance 6

Control Panel ................................................... 7

LED Display ..................................................... 7

Setting the Clock .............................................. 8

Operating the Heater Manually ........................ 9

Programmable Weekly Timer ........................ 10

Programming the Weekly Timers................... 11

Programming the Weekly Timers (Example) .....

................................................................. 12, 13

Weekly Timer Review Function ..................... 14

Your Weekly Timer Program.......................... 15

Factory Pre-set Program................................ 15

Operating the Timers ..................................... 16

Returning to Manual Mode ............................ 16

Override Function .......................................... 17

Frost Protection .............................................. 18

Energy Saving Mode ...................................... 19

Function Lock ................................................. 20

Humidifier and Air Flow Direction .................. 21

Care and Maintenance ................................... 22

Before Making a Service Call ......................... 23

Fault Codes .................................................... 24

Restart Function ............................................. 25

Troubleshooting ............................................. 25

Installation Instructions

General Instructions ....................................... 26

Gas Connection ............................................. 27

Clearances to Combustibles .......................... 27

Attach Back Covers (Sides only) .................. 27

Flue Terminal Clearances ....................... 28, 29

Dimensions .................................................... 30

Installation Parts ........................................... 31

Drilling Flue Hole ........................................... 32

Flue Manifold Installation ......................... 33, 34

Extension Kit Installation .......................... 35-38

Connecting the Appliance .............................. 39

Operating Instructions ................................... 40

Cut-Away Diagram .........................................

Wiring Diagram .............................................. 42

Ladder Diagram ............................................. 43

Flow Diagram ................................................. 44

Parts List ................................................... 45-53

Consumer Support

Warranty Information ..................................... 54

Limited Warranty ...................................... 54, 55

Rinnai Corporation EX17 / EX22 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

WARNING

CAUTION

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

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

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 Behaviors 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.

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

Rinnai Corporation EX17 / EX22 Manual

Safety Features

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

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

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

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

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

• 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

)ylno ASU( emoh derutcafunam roF noitacilppA 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

cinortcele nottub hsuP noitarepO

Gas Connection 1/2 in NPT

Gas Control Electronic

renrub nesnuB leets sselniatS srenruB

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 - 3 pints (1300 cc)

Electrical Connection AC 120V, 60 Hz, 46 watts (EX17), 51 watts (EX22)

Weight 53 lbs (24 kg)

Noise Level EX17: 33-39 dB , EX22: 33-43 dB

AFUE Rating EX17: Natural Gas: 81.0% Propane: 81.0%

EX22: Natural Gas: 80.0% Propane: 81.0%

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.

Rinnai Corporation EX17 / EX22 Manual

Appliance Specifications

Natural Gas Propane Gas

Minimum supply gas pressure 3.5 in (89 mm) W.C. 8.0 in (203 mm) W.C.

Maximum supply gas pressure 10.5 in (267 mm) W.C. 13.0 in (330 mm) W.C.

EX17

Natural Gas Propane Gas

BTU/hour input Low 8200

High 16700

BTU/hour output Low 6560

High 13360

Low 8200 High 16700

Low 6560 High 13360

Features

• Restarts automatically when ignition or combustion fails.

• Clean Heating Forced Flue Type

• Easy Operation One-Touch Ignition

• Sensible Temperature Control Feature

• Comfortable Room Temperature Control and

Display

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

• Function Lock

• Room Temperature Setting Memory

EX22

Natural Gas Propane Gas

BTU/hour input Low 8200

High 21500

BTU/hour output Low 6560

High 17200

• Clean the Air Filter - Indicator Lamp

• Energy Saving Economy Setting

• Humidifier Tray

• Air Flow Directional Louvers

• Direct Vent Easily Installed

• Proportional Heating Variable Capacity

• Hush! Quiet Operation

• Modern Design Minimizes Floor Space

Requirements

• Fault Code Message Display

Low 8200 High 20700

Low 6560 High 16560

Rinnai Corporation EX17 / EX22 Manual

Operating Instructions

Getting to Know your New Heating appliance

WARM AIR OUTLET

HUMIDIFIER REMOVE BOTTOM COVER AND PULL OUT TO REFILL

BOTTOM COVER HOLD BOTH SIDES AND PULL TOWARD YOU

DISPLAY TEMPERATURE/ TIMERS SETTING CONTROLS

ON/OFF SWITCH TURNS MAIN POWER ON/OFF

RATING PLATE MODEL NUMBER, SERIAL NUMBER, GAS TYPE, ETC.

THERMISTOR

GAS CONNECTIONS 1/2" NPT

POWER CORD

PLUG 120V AC

AIR FILTER

EXHAUST PIPE

VENT TERMINAL COMBUSTION/ EXHAUST

COMBUSTION AIR INTAKE HOSE

Rinnai Corporation EX17 / EX22 Manual

Control Panel

Clock: used to set the current time and day.

Up/Down: function of these buttons varies depending on the operating mode. (refer to the table below for details).

MODE OPERATION

Clock Set

Timer Program

Frost Protection

To set current time

and day

Select days of

week, time and

temperature

Set Frost

Protection

temperature

LED DISPLAY

Select: When programming the timers, this button is used to select and confirm day, time and temperature settings.

Programming

Clock Select

Function Lock

Timers

Override

Override: overrides the current timer setting by reversing the current operation.

Auto: toggles the heater between AUTO(for timer operation) and MANUAL

operation modes.

EcoFrost

Auto

Timers: used to carry out timer programming and confirm all settings.

Frost: used to initiate the Frost mode and allows for a minimum frost temperature to

ON/OFF

be set.

Eco: used to select the Economy mode.

ON/OFF: this is the main on/ off switch for the heater.

Days:shows current day of week or day(s) being programmed.

Clock:shows current time or pre-set program time for timer.

am pm

Mo Tu We Th Fr Sa Su

1 2 3 4 OFF

Periods:shows current operating period or period being programed.

Function Lock: indicates that the function lock is on.

Temperatures: shows pre-set and room temperatures.

Auto/Man: indicates Manual or Timer operation mode.

Set Room

Function Lock Economy Mode

Clock: shows when the clock is being set.

Economy Mode: indicates that the Economy Mode is on.

Sensible Temperature Control

Auto

Frost ON

Man

Override On Off Select Clock

Program Timer

Temp Review Filter

Frost:indicates that the anti-frost mode is on and that a minimum anti-frost temperature can be entered.

Override On/Off: indicates whether the Override function is on and whether it has turned the heater on or off(reverse function).

ON/  : indicates when the heater is operating and whether the burner is alight( ).

Review: indicates that the review mode is on.

Filter:shows when the filter needs to be cleaned.

Select Program Timer/Temp: indicates when the timers are being programed-Start time "Select Program Timer" or Temperature "Select Program Temp".

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

Rinnai Corporation EX17 / EX22 Manual

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.

Setting the Clock

■ TO OPEN THE CONTROL PANEL

Lift lightly in the center of the lid. The control panel lid will then drop backward to an angle.

Note: When the appliance is first plugged in or after a power failure longer than 24 hours the display will show “PF”. And the appliance will turn on due to the frost protection function.

■ SETTING THE CURRENT TIME & DAY

(This example shows setting the clock to 8:20am on Saturday.)

DAY OF THE WEEK

Press the “Clock” button

once. The day of the week

Select

and is displayed.

Clock

Press either of the “▲” or “▼”

buttons until the correct day of the week is displayed.

Set

Select Clock

Frost

Programming

Clock Select

Programming

Clock Select

Timers

Press the “Select” button once to lock in and complete day of the week selection. The time of day will then flash.

Select Clock

TIME OF DAY

To set the time press the “▲” or “▼” buttons until the correct time of day is displayed.

Select Clock

Pressing either button once will change the time in single minutes.

Holding button down will change the time rapidly, first in minutes, then in hours.

CONFIRM SETTINGS

Press the “Select”or “Clock” button once to lock in and complete setting the time.

Select

The indicators will go out.

Clock

Programming

Clock Select

Programming

Clock Select

Programming

Clock Select

Timers

Rinnai Corporation EX17 / EX22 Manual

Operating the Heater Manually

■ To turn the heater ON:

Press the “ON/OFF” button.

ON/OFF

Check to see if the “Man” or “Auto” indicator is displayed:

indicator

If the “Auto” indicator is displayed then press the “Auto” button. The indicator will change to “Man”. Go to Step 3.

If the “Man” indicator is displayed go to Step 3.

Select the desired room temperature by pressing the “▲” or “▼” buttons.

Set Room

Auto ON

indicator

Man

EcoFrost

Override

Auto ON/OFF

Programming

Clock Select

The heater will start and run for 90 seconds so that it can check the room temperature

(the indicator will show).

If the room temperature is lower than the pre-set or desired temperature the heater will continue to run.

If the room temperature is higher than the pre-set or desired temperature, the heater will go into “stand-

by” mode, and will start when the room temperature falls below the pre-set temperature.

Timers

If the heater does not ignite on initial use, this may be due to air remaining in the gas supply line. The spark generator will only continue for 15 seconds. After this it will be necessary to press the ON/OFF button OFF, then ON again.

■ To turn the heater OFF:

Press the “ON/OFF” button.

Override

DO NOT turn heater off by unplugging the power cord.

The convection fan will continue to run until the appliance cools.

Rinnai Corporation EX17 / EX22 Manual

EcoFrost

Auto ON/OFF

Programmable Weekly Timer

• The four timer periods create up to four separate operating intervals, each with its own temperature setting.

• These periods can be programmed differently for each day of the week, or for a group of days: weekdays,

weekends, or the entire week.

• The programming covers a 24 hour time span (one day).

The two diagrams below graphically represent examples of weekday and weekend programs.

5:30am

Weekday Program

• Period 1 has been programmed to start at 5:30 am with a temperature setting of 76° F. The appliance will heat the room at 76° F until 8:00 am, when period 2 starts.

• Period 2 has a temperature setting of “nothing” or OFF, and so the heater will not operate again until the start of period 3 at 5:00 pm.

• Period 3 heats the room from 5:00 pm to 9:30 pm at 72° F.

• Period 4 turns the appliance OFF until Period 1 begins the next day.

MIDNIGHT

9:30pm

OFF

72°F

76°F

OFF

8:00am

MIDDAY

Weekend Program

• Period 1 has been programmed to start at 9:00 am with a temperature setting of 76° F. The appliance will heat the room at 76° F until 11:00 am, when period 2 starts.

• Period 2 has a temperature setting of “nothing” or OFF, and so the heater will not operate again until the start of period 3 at 4:00 pm.

• Period 3 heats the room from 4:00 pm to 11:00 pm at 72° F.

• Period 4 has a temperature setting of LOW and runs the appliance at this setting during the night.

5:00pm

9:00am

LOW

MIDNIGHT MIDDAY

76°F

OFF

11:00pm

72°F

4:00pm

11:00am

Rinnai Corporation EX17 / EX22 Manual

Programming the Weekly Timers

The following is a general outline of the setting options and procedures avaliable when programming the weekly timers.

Note: Before programming the current time and day must be set.

The weekly timers can be easily programmed by following the steps illustrated below:

Press the “Timers” button once to

activate the timer programming mode.

Timers

Select the day or group of days you

wish to program by pressing the “up” and “down” buttons:

Choose from the following options: Mo Tu We Th Fr Sa Su

Mo Tu We Th Fr Sa Su

or each day of the week in turn.

If a group of days is chosen, the times and temperatures selected in steps 3 → 5 will automatically apply for those days.

Press the “Select” button to confirm your choice.

Select

Select the period you wish to program by pressing the “up” and “down” buttons:

Periods 1 → 4 will automatically appear in order as you follow this programing sequence, so you may not need to manually select a timer period.

Press the “Select” button to confirm your choice.

Select

Mo Tu We Th Fr Sa Su

1 2 3 4 OFF

Set the start time for this period by pressing the “up” and “down ”buttons:

The time will move up or down in 10 minute increments.

Each period must be set to a later time than the period before it.

No period can be set past 11:50 pm, as this is the end of the 24 hour program.

Press the “Select”button to confirm the time.

Select

Set

Auto Man Select Clock

Frost

Override

Prog

Temp R

Set the temperature you want for this period by pressing the “up” and “down” buttons:

Choose from the following temperature settings:

H(high, maximum fire)

80° F →60° F

L(low, minimum fire)

- - (OFF)

If you want heat during this period, choose a temperature.

If you do not want heat, choose the OFF setting.

Press the “Select” button to confirm the temperature setting.

Select

Repeat steps → for periods 1 through to 4 until you are satisfied with all the settings.

Press the “Timers“ button again to confirm your program and lock in all settings.

Rinnai Corporation EX17 / EX22 Manual

Programming the Weekly Timers (Example)

Note: Before programing the timers, the clock must be set to the correct time.

The following is a step by step guide to programing the timers by an example schedule. If programing is paused for longer than 2 minutes the display will return to the current time,

and all programing up to that stage will be lost.

The times and temperatures in the EXAMPLE box below can be used for learning how to set the programm-

able thermostat.

■ EXAMPLE Let's use the following schedule to program the weekdays...

EXAMPLE SCHEDULE

Time Setting Temperature

Periods

2 3 4

5:30 am 8:00 am 5:00 pm

9:30 pm

76°F OFF 72°F

OFF

Press the “Timers” button once. The

display will show “Select Program Timer” and the “Mo Tu We Th Fr Sa Su” indicators will flash.

Press the “▲” button once, the “Mo Tu

We Th Fr” indicators will flash.

Press the “Select” button once, the period □

indicator will flash and the time and temperature display will be shown.

Press the “Select” button again. The

period □1indicator will become stable, the temperature display will go out and the clock will flash.

Press the “▼” button until the display

shows “am5:30”(as shown in the example schedule for period □1).

Programming

Tu WeTh Fr SuMo Sa

Tu WeTh FrMo

Set

Select

Program Timer

Clock Select

Programming

Clock Select

Programming

Clock Select

Programming

Clock Select

Programming

Clock Select

Timers

Press the “Select” button again. The clock

indicator will become stable, the pre-set temperature will flash and “Select Program Temp” will be shown.

Tu WeTh FrMo

Set

Select

Temp

Rinnai Corporation EX17 / EX22 Manual

Program

Programming

Clock Select

Timers

Programming the Weekly Timers (Example)

Press the “▲” button to set the pre-set

temperature to 76°F(remember, we are using the example schedule).

Press the “Select” button again. Now the

period □2indicator will flash and the time and temperature display will be shown.

Press the “Select” button again. The

period □2indicator will become stable, the temperature display will go out and the clock indicator will flash.

Press the “▼” button until the display

shows “am8:00”(as in the example for period □2).

Press the “Select” button again. The clock

indicator will become stable, the pre-set temperature will flash and “Select Program Temp” will be shown.

Tu WeTh FrMo

Set

Select

Program

Temp

Set

Select

Program Timer

Select

Program Timer

Select

Program Timer

Set

Select

Program

Temp

Programming

Clock Select

Programming

Clock Select

Programming

Clock Select

Programming

Clock Select

Programming

Clock Select

Timers

Press the “▼” button until the

temperature shows “- -” and the “OFF” indicator is displayed.

Set periods □3and □4following/repeating steps to , and then go to step .

Press the “Select” button again. The

period 1 indicator will flash and “Sa Su” will be displayed.

You can now program a Weekend schedule by repeating steps to , and then go to step .

Once all timers are programed, Press the

“Timers” button once to save all timer settings. The display will return to the

Tu WeTh FrMo

2 OFF

Set

Select

Program

Temp

Set

SuSa

Select

Program Timer

current time and the “Set Program Timer” indicator will go out.

To review all of the programed settings go to “WEEKLY TIMER REVIEW FUNCTION”. For a description of how to operate the heater with these programed settings, go to “OPERATING THE

TIMERS”.

Programming

Clock Select

Programming

Clock Select

Programming

Clock Select

Timers

Rinnai Corporation EX17 / EX22 Manual

Weekly Timer Review Function

This function lets you review all of the programed Weekly Timer settings(times and temperatures)

without the option of adjusting these settings, removing the danger of accidently changing the

program.

This is a quick way to review the Weekly Timer program before operating the timers.

■ To enter the Weekly Timer Review mode:

NOTE: If the heater is left in “Timer Review Mode” for longer than 10 seconds without the “ ” or “ ” buttons being

▲ ▼

pressed, it will exit this mode and return the previous operation.

Press and hold.

Press and hold the “Timers” button

for approximately 3 seconds(an audible “beep” will be heard).

Set

Review

Programming

Clock Select

NOTE:

The Period □1, “Mo”, time,

temperature, and “Review” indicators will show.

Press the “ ▲ ” button repeatedly

to review the Weekly Timer program.

Set

Review

Programming

Clock Select

The four timer periods for each

day of the week will show in turn, starting with “Mo”(Monday) then “Tu” etc.

Timers

Press the “ ▼ ” button to go

backwards through the program.

■ To exit the Weekly Timer Review mode:

Press the “Timers” button.

Rinnai Corporation EX17 / EX22 Manual

Programming

Clock Select

Timers

Your Weekly Timer Program

■ Points to consider before writing your program:

When do I want the heater to operate, and what temperature do I want?

When do I not want the heater to operate?

Will I use the same settings for everyday of the week, or do I need a separate program for the weekdays, and the weekend? Do I need a separate setting for each day of the week?

■ Points to remember when writing your program:

The four periods are set within a 24 hour time span.

The start of a new period marks the end of the previous one, so each period only requires a START time.

Period 4 ends with the start of period 1 on the next day.

Each period must be set to a later time than the one before it.

If you want to heat during the period, select a temperature: H(high), 80 → 60, L(low).

If you do not want to heat during this period, select the OFF setting.

■ Write your own program:

Use the tables below to write your own weekly timer program, then program the timers.

Start Time Temperature or OFF

Factory Pre-set Program

WEEK DAY

The heater comes shipped with a factory set program(opposite).

If the heater is not set with a new program it will run according to this program when you operate the timers.

If the Weekly Timer program settings are erased, the heater will revert to this program.

Start Time Temp or OFF

1 2 3 4

WEEK END

Start Time

1 2 3 4

6:00 am 8:30 am 5:00 pm 11:30 pm

7:00 am 12:00 pm 5:00 pm 11:30 pm

72°F 64°F 74°F 64°F

Temp or OFF

72°F 70°F 74°F 64°F

Rinnai Corporation EX17 / EX22 Manual

Operating the Timers

■ Before operating the timers, please check the following points:

The clock must be set to the current time and day.

If no personal program is entered, the heater will operate according to the the default factory settings.

■ Follow the steps below to operate the timers:

Press the “ON/OFF” button. The

“Man”(Manual) and “ON” indicators

will come on as well as the preset

Set Room

Man

Override

EcoFrost

Auto ON/OFF

and room temperatures.

Press the “Auto” button. The “Man”(Manual) indicator will be replaced by the “Auto”(Automatic) indicator, and the current timer period will show.

4 OFF

Set Room

Auto ON

Override

EcoFrost

Auto ON/OFF

If the current period has been programed with a temperature, the heater will start heating.

If the current period has been programed with an OFF setting the heater will not heat during

this period.

The heater will now operate according to the four periods programed into the Weekly Timer.

Returning to Manual Mode

Press the “Auto” button. The “Auto” indicator will go out and be replaced by the “Man”(Manual) indicator. The heater will now heat depending on your manual settings.

Set Room

Man

Rinnai Corporation EX17 / EX22 Manual

Override

EcoFrost

Auto ON/OFF

Override Function

■ This function is used when the heater is in “Auto” mode(timer operation).

■ It allows you to “Override” the preset timer setting until the beginning of the next period.

For example, if the heater is ON, pressing the “Override” button will turn it OFF until the next priod. If the heater is OFF, pressing the “Override” button will turn the heater ON, and allow you to select a temperature, until the next period.

■ To turn on the Override function:

Remember: The Override function is for use in the “Auto”(timer) mode only.

Press the “Override” button.

Override

One of the following will happen depending on the current timer period setting:

If the current timer

period is ON (heating)

The heater will turn OFF, the

temperatures will display “-”, and the

“Override” and “Off” indicators will light.

The heater will turn ON, the manual pre-set temperature and room temperature will show , and the

If the current timer

“Override” and “On” indicators will light.

Set Room

The heater will remain OFF until

Auto ON

Override Off

3 OFF

Press the “ ▲ ” or “ ▼ ” buttons to manually

adjust the pre-set room temperature. a. the next timer period, or b. the Override function turned off

manually(see step below).

period is OFF

Set Room

Auto ON

Override On

■ To turn off the Override function:

Press the “Override” button.

Then the heater will return to the operation of the current timer period.

Rinnai Corporation EX17 / EX22 Manual

The heater will remain heating until

a. the next timer period, or

b. the Override function turned off

manually (see step below).

+ 39 hidden pages