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

Transcription

1 Owner s Operation and Installation Manual for the EX7 (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.

2 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... 0 Programming the Weekly Timers... Programming the Weekly Timers (Example) , 3 Weekly Timer Review Function... 4 Your Weekly Timer Program... 5 Factory Pre-set Program... 5 Operating the Timers... 6 Returning to Manual Mode... 6 Override Function... 7 Frost Protection... 8 Energy Saving Mode... 9 Function Lock Humidifier and Air Flow Direction... 2 Care and Maintenance Before Making a Service Call Fault Codes Restart Function Troubleshooting Installation Instructions General Instructions Gas Connection Clearances to Combustibles Attach Back Covers (Sides only) Flue Terminal Clearances... 28, 29 Dimensions Installation Parts... 3 Drilling Flue Hole Flue Manifold Installation... 33, 34 Extension Kit Installation Connecting the Appliance Operating Instructions Cut-Away Diagram... 4 Wiring Diagram Ladder Diagram Flow Diagram Parts List Consumer Support Warranty Information Limited Warranty... 54, 55 Rinnai Corporation EX7 / EX22 Manual

3 Safety Definitions Consumer Safety Information 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. 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. 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. 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 EX7 / EX22 Manual

4 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 Application General Description Operation Gas Connection Gas Control Burners Temperature Control Ignition System Flue System Humidifier Tray 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 0,200 feet (309 m). Forced combustion, forced convection, flued gas furnace Push button electronic /2 in NPT Electronic Stainless steel Bunsen burner Electronic thermostat Electronic spark ignition 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. Capacity - 3 pints (300 cc) Electrical Connection Weight Noise Level AC 20V, 60 Hz, 46 watts (EX7), 5 watts (EX22) 53 lbs (24 kg) EX7: db, EX22: db AFUE Rating EX7: Natural Gas: 8.0% Propane: 8.0% EX22: Natural Gas: 80.0% Propane: 8.0% 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 EX7 / EX22 Manual

5 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 0.5 in (267 mm) W.C. 3.0 in (330 mm) W.C. EX7 EX22 Natural Gas Propane Gas Natural Gas Propane Gas BTU/hour input Low 8200 High 6700 Low 8200 High 6700 BTU/hour input Low 8200 High 2500 Low 8200 High BTU/hour output Low 6560 High 3360 Low 6560 High 3360 BTU/hour output Low 6560 High 7200 Low 6560 High 6560 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 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 Rinnai Corporation EX7 / EX22 Manual

6 Operating Instructions Getting to Know your New Heating appliance WARM AIR OUTLET DISPLAY TEMPERATURE/ TIMERS SETTING CONTROLS HUMIDIFIER REMOVE BOTTOM COVER AND PULL OUT TO REFILL ON/OFF SWITCH TURNS MAIN POWER ON/OFF BOTTOM COVER HOLD BOTH SIDES AND PULL TOWARD YOU RATING PLATE MODEL NUMBER, SERIAL NUMBER, GAS TYPE, ETC. THERMISTOR AIR FILTER GAS CONNECTIONS /2" NPT EXHAUST PIPE POWER CORD VENT TERMINAL COMBUSTION/ EXHAUST PLUG 20V AC COMBUSTION AIR INTAKE HOSE Rinnai Corporation EX7 / EX22 Manual

7 Control Panel Clock: used to set the current time and day. Select: When programming the timers, this button is used to select and confirm day, time and temperature settings. Timers: used to carry out timer programming and confirm all settings. Up/Down: function of these buttons varies depending on the operating mode. (refer to the table below for details). Programming Clock Select Timers Function Lock Frost Override Eco Auto ON/OFF Frost: used to initiate the Frost mode and allows for a minimum frost temperature to be set. MODE Clock Set Timer Program Frost Protection OPERATION To set current time and day Select days of week, time and temperature Set Frost Protection temperature Override: overrides the current timer setting by reversing the current operation. Auto: toggles the heater between AUTO(for timer operation) and MANUAL operation modes. Eco: used to select the Economy mode. ON/OFF: this is the main on/ off switch for the heater. LED DISPLAY Days:shows current day of week or day(s) being programmed. Clock:shows current time or pre-set program time for timer. Temperatures: shows pre-set and room temperatures. Auto/Man: indicates Manual or Timer operation mode. 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). am Set Room pm Mo Tu We Th Fr Sa Su Function Lock OFF Economy Mode Auto Man Select Clock Frost ON Override On Off Program Timer Temp Review Filter ON/ : indicates when the heater is operating and whether the burner is alight( ) Periods:shows current operating period or period being programed. Clock: shows when the clock is being set. Review: indicates that the review mode is on. Filter:shows when the filter needs to be cleaned. Function Lock: indicates that the function lock is on. Economy Mode: indicates that the Economy Mode is on. Select Program Timer/Temp: indicates when the timers are being programed-start time "Select Program Timer" or Temperature "Select Program Temp". Sensible Temperature Control The sensible temperature control feature allows comfortable heating which matches the conditions in the room. Rinnai Corporation EX7 / 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.

8 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. Set Frost 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 and is displayed. Select Clock Mo Select Clock Programming Clock Select Timers 2 Press either of the or buttons until the correct day of the week is displayed. Sa Select Clock Programming Clock Select Timers 3 Press the Select button once to lock in and complete day of the week selection. The time of day will then flash. am Sa Select Clock Programming Clock Select Timers TIME OF DAY 4 To set the time press the or buttons until the correct time of day is displayed. am Sa Select Clock Programming Clock Select Timers 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 5 Press the Select or Clock button once to lock in and complete setting the time. The Select Clock indicators will go out. am Sa Programming Clock Select Timers Rinnai Corporation EX7 / EX22 Manual

9 Operating the Heater Manually To turn the heater ON: Press the ON/OFF button. ON/OFF 2 Check to see if the Man or Auto indicator is displayed: If the Auto indicator is displayed then press the Auto button. The indicator will change to Man. Go to Step 3. pm Tu Set Room Auto indicator indicator ON Frost Eco Override Auto ON/OFF If the Man indicator is displayed go to Step 3. pm Tu Set Room Man ON 3 Select the desired room temperature by pressing the or buttons. pm Tu Set Room Man ON Programming Clock Select Timers 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 standby mode, and will start when the room temperature falls below the pre-set temperature. 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 5 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. pm Tu Frost Eco Override Auto ON/OFF DO NOT turn heater off by unplugging the power cord. The convection fan will continue to run until the appliance cools. Rinnai Corporation EX7 / EX22 Manual

10 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. Weekday Program 5:30am Period 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 begins the next day. MIDNIGHT 9:30pm 4 OFF OFF 2 8:00am MIDDAY 3 5:00pm Weekend Program Period 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 :00 am, when period 2 starts. 9:00am 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. MIDNIGHT LOW 76 2 :00am MIDDAY Period 3 heats the room from 4:00 pm to :00 pm at 72 F. Period 4 has a temperature setting of LOW and runs the appliance at this setting during the night. :00pm 4 72 OFF 3 4:00pm 0 Rinnai Corporation EX7 / EX22 Manual

11 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 am Mo Tu We Th Fr Sa Su OFF Set Auto Man Select Clock Frost Override Prog Temp R 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 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 Set the start time for this period by pressing the up and down buttons: The time will move up or down in 0 minute increments. Each period must be set to a later time than the period before it. No period can be set past :50 pm, as this is the end of the 24 hour program. Press the Select button to confirm the time. Select 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 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 EX7 / EX22 Manual

12 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 programmable thermostat. EXAMPLE Let's use the following schedule to program the weekdays Periods EXAMPLE SCHEDULE Time Setting 5:30 am 8:00 am 5:00 pm 9:30 pm Temperature 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. Mo Tu We Th Fr Sa Su Select Program Timer Programming Clock Select Timers 2 Press the button once, the Mo Tu We Th Fr indicators will flash. Mo Tu We Th Fr Select Program Timer Programming Clock Select Timers 3 Press the Select button once, the period indicator will flash and the time and temperature display will be shown. am Mo Tu We Th Fr Set Select Program Timer Programming Clock Select Timers 4 Press the Select button again. The period indicator will become stable, the temperature display will go out and the clock will flash. am Mo Tu We Th Fr Select Program Timer Programming Clock Select Timers 5 Press the button until the display shows am 5:30 (as shown in the example schedule for period ). am Mo Tu We Th Fr Select Program Timer Programming Clock Select Timers 6 Press the Select button again. The clock indicator will become stable, the pre-set temperature will flash and Select Program Temp will be shown. am Mo Tu We Th Fr Set Select Program Temp Programming Clock Select Timers 2 Rinnai Corporation EX7 / EX22 Manual

13 Programming the Weekly Timers (Example) 7 Press the button to set the pre-set temperature to 76 F(remember, we are using the example schedule). am Mo Tu We Th Fr Set Select Program Temp Programming Clock Select Timers 8 Press the Select button again. Now the period 2 indicator will flash and the time and temperature display will be shown. am Mo Tu We Th Fr 2 Set Select Program Timer Programming Clock Select Timers 9 Press the Select button again. The period 2 indicator will become stable, the temperature display will go out and the clock indicator will flash. am Mo Tu We Th Fr 2 Select Program Timer Programming Clock Select Timers 0 Press the button until the display shows am 8:00 (as in the example for period 2 ). am Mo Tu We Th Fr 2 Select Program Timer 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. am Mo Tu We Th Fr 2 Set Select Program Temp Programming Clock Select Timers 2 Press the button until the temperature shows - - and the OFF indicator is displayed. am Mo Tu We Th Fr 2 OFF Set Select Program Temp Programming Clock Select Timers 3 Set periods 3 and 4 following/repeating steps to, and then go to step Press the Select button again. The period indicator will flash and Sa Su will be displayed. am Sa Su Set Select Program Timer Programming Clock Select Timers 5 6 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 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. Mo pm Programming Clock Select Timers Rinnai Corporation EX7 / EX22 Manual 3

14 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 0 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). am Mo Set Review Programming Clock Select Timers NOTE: The Period, Mo, time, temperature, and Review indicators will show. 2 Press the button repeatedly to review the Weekly Timer program. am Tu Set Review Programming Clock Select Timers The four timer periods for each day of the week will show in turn, starting with Mo (Monday) then Tu etc. Press the button to go backwards through the program. To exit the Weekly Timer Review mode: Press the Timers button. pm Tu Programming Clock Select Timers 4 Rinnai Corporation EX7 / EX22 Manual

15 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 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 Start Time Temperature or OFF Factory Pre-set Program 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. WEEK DAY Start Time 6:00 am 8:30 am 5:00 pm :30 pm WEEK END Start Time 7:00 am 2:00 pm 5:00 pm :30 pm Temp or OFF 72 F 64 F 74 F 64 F Temp or OFF 72 F 70 F 74 F 64 F Rinnai Corporation EX7 / EX22 Manual 5

16 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 and room temperatures. pm Tu Set Room Man ON Frost Eco Override Auto ON/OFF 2 Press the Auto button. The Man (Manual) indicator will be replaced by the Auto (Automatic) indicator, and the current timer period will show. If the current period has been programed with a temperature, the heater will start heating. pm Tu 3 Set Room Auto ON Frost Eco If the current period has been programed with an OFF setting the heater will not heat during this period. pm Tu 4 OFF Set Room Auto ON Override Auto ON/OFF 3 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. pm Tu Set Room Man ON Frost Eco Override Auto ON/OFF 6 Rinnai Corporation EX7 / EX22 Manual

17 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. or If the current timer period is OFF The heater will turn ON, the manual pre-set temperature and room temperature will show, and the Override and On indicators will light. pm Tu 3 Set Room Auto Override ON Off pm Tu 3 OFF Set Room Auto Override On ON 2 The heater will remain OFF until a. the next timer period, or b. the Override function turned off manually(see step below). Press the or buttons to manually adjust the pre-set room temperature. To turn off the Override function: The heater will remain heating until a. the next timer period, or b. the Override function turned off manually (see step below). Press the Override button. Then the heater will return to the operation of the current timer period. Rinnai Corporation EX7 / EX22 Manual 7

18 Frost Protection This function allows a minimum room temperature to be pre-set, between 38 F and 60 F. Once the Frost Protection function is selected the appliance will start heating whenever the room temperature falls below the selected temperature, regardless of timer or manual settings. The default position is ON. If the power is lost, when it returns, the appliance will turn on due to the frost protection function. Follow the steps below to set and operate the Frost Protection: Make sure the heater is turned OFF. 2 Press the Frost button. The Frost Protection temperature and the Frost indicator will be displayed. pm Tu Set Frost Frost Eco Override Auto ON/OFF 3 Press the and buttons to select the Frost Protection temperature. (Between 38 F and 60 F). pm Tu Set Frost Programming Clock Select Timer When the Frost indicator is displayed the Frost Protection is operating, and will always prevent the room temperature from falling below the pre-set Frost Protection temperature. To turn off the Frost Protection: Press the Frost button. The Frost indicator will go out. pm Tu Frost Eco Override Auto ON/OFF 8 Rinnai Corporation EX7 / EX22 Manual

19 Energy Saving Mode The Economy mode can only be set while the heater is operating (heating), but once set it will remain in the system memory until deactivated. To turn on the Economy mode: Note: The Economy Mode may only be set while the heater is operating(heating). Press the Eco button. The Economy Mode indicator will light. pm Tu Set Room Economy Mode Man ON Frost Eco Override Auto ON/OFF The Economy Mode now remains in the system memory. If the appliance is turned off manually, or stops heating as a result of an OFF timer period, the Economy Mode indicator will go out. Whenever the appliance starts heating again, the Economy Mode indicator will light. To turn off the Economy Mode: Note: The Economy Mode can only be turned off while the heater is operating(heating), i.e when the Economy Mode indicator is showing. Press the Eco button. The Economy Mode indicator will go out. pm Tu Set Room Man ON Frost Eco Override Auto ON/OFF Economy Mode: Information After the room is heated initially the air temperature may be dropped to a lower level without affecting comfort. 30 minutes after the selected room temperature (set manually with the and buttons or in an On timer period) is reached, the Economy Mode, if set, reduces the temperature by 2 F. After another 30 minutes it reduces the temperature by a further 2 F, effectively saving energy. Preset Temperature 30 min 2 F reduction 30 min 2 F reduction The Economy Mode will not operate if the heater is under capacity for the room size. Rinnai Corporation EX7 / EX22 Manual 9

20 Function Lock The Function Lock will help to prevent accidental operation of the appliance as well as children from altering the controls. To activate the Function Lock: Press the and buttons at the same time. The Function Lock indicator will light. pm Tu Set Room Function Lock Man ON Programming Clock Select Timers At the same time To deactivate the Function Lock: Press the and buttons at the same time for approx 2 seconds until a beep is heard. The Function Lock indicator will go out. pm Tu Set Room Man ON Programming Clock Select Timers At the same time for 2 seconds NOTE: The lock can be activated when the heater is ON or OFF. If activated while the heater is ON, all controls other than the OFF switch will be locked. If activated while the heater is OFF, then all controls will be locked. If the heater is turned off while the Function Lock is activated, it cannot be turned on again until the lock is deactivated. Deactivating the lock releases the controls. 20 Rinnai Corporation EX7 / EX22 Manual

21 Humidifier and Air Flow Direction Adding Water to the Humidifier CAUTION Do not remove the bottom trim panel or the humidifier tray while warm air is flowing. Warm air is humidified when it passes over the water in the tray. To fill the tray, remove the bottom trim panel below the louvers by pulling on both sides. Pull the tray out and fill with water. Push the tray back in and attach the bottom trim panel. Do not operate the appliance unless the humidifier tray is installed. During operation a small amount of condensation is produced in the flue system and drains into the humidifier tray. 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. Rinnai Corporation EX7 / EX22 Manual 2

22 Care and Maintenance Maintenance 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. 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:. Turn heat off. Allow to cool for one hour. 2. Remove the front panel by removing eight 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. 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. Filters 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 display fault code 4 on the control panel display. 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. NORMAL Flame Rod Long, clear, blue, stable flames CAUTION Prevent dust from accumulating on the power cord, side covers, and parts behind the appliance. ABNORMAL Flame Rod 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. Yellow flames or orange color 22 Rinnai Corporation EX7 / EX22 Manual

23 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. Smoke or strange smells are produced on the first trial light up after installation. Sharp clicking noises at ignition, or when unit cuts down on the thermostat, or goes out. The fan is started automatically after a short delay. This is to allow the heat exchanger to warm up, helping to avoid cold draughts. This is caused by grease or oil and dust on the heat exchanger and will stop after a short time. This is simply expansion noise from the heat exchanger. During Combustion: Clunking noise when the thermostat operates. Unit is not heating room. Air filter is blocked or the louvers are blocked or obstructed. Heater will not re-ignite after overheating. This is the sound of the solenoid gas valves opening and closing. 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? Allow heater to cool, clean air filter, operate again. 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 EX7 / EX22 Manual 23

24 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. 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. CODE DISPLAYED FAULT REMEDY 4 6 Ignition Failure Overheat Room Overheat Check that gas is turned ON. Check that the vent termination is not blocked. Refer to the Restart Function explanation. Service call if repeated. Clean filter. Service call if repeated. [] Lower room temperature to less than 04 F (40 C). 3 Room Temperature Sensor 32 Faulty Service call. 33 Overheat Temperature Sensor 34 Faulty Service call. 49 Sensor Breakdown Service call. 53 Sparker Failure Service call. 6 Combustion Fan Failure Service call. 70 Faulty ON/OFF Switch Service call. 7 Faulty Solenoids Service call. 72 Faulty Flame Rod Service call. 73 Communication Error Service call. 99 Flue Block Check around the flue terminal for blockage. [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. [2] 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. 24 Rinnai Corporation EX7 / EX22 Manual

25 Restart Function If the appliance fails to ignite, the appliance will attempt ignition after hour. The Ignition Failure fault code,, 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 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 hour. The Ignition Failure fault code,, will appear during that hour and disappears after a successful ignition. Forced combustion takes place for about 5 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. Troubleshooting Cause Problem No ON indicator Burner doesn t ignite Unusual combustion Combustion stops during operation Smell of gas Noisy ignition Takes too long to warm the room Remedy Not Plugged In Power Failure (Initial Installation) Air In Gas Pipe Gas Filter Blocked Miss Ignition Flue terminal obstructed Flue manifold not connected Louver obstructed Air filter blocked Gas Escape Function Lock Set Gas turned off at meter, tank, or valve. Plug In Push On/Off button to attempt restart after power is restored. Purge air (Installer) Service Call Service Call Clear obstruction Service Call Clear obstruction Clean filter Service Call Cancel Function Lock Turn gas on Rinnai Corporation EX7 / EX22 Manual 25

26 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./NFPA 54, or the Natural Gas and Propane Installation Code, CSA B49.. 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., or the standard for Gas Equipped Recreational Vehicles and Mobile Housing, CSA Z 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.. 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 /2 psi (3.5 kpa). 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 /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. Installation Instructions 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 20VAC, 60 hz, 0 amp power source be used. Two /8 in test plugs are provided for testing of manifold differential pressure. They are located on the modulating gas valve and on the burner manifold. 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 ( m) from the front, and 9 inches (225 mm) from the top. NOTICE If installation is at a location above 200 ft (60 m), then follow the Adjust Gas Pressure Settings procedure in the Conversion Manual. If installation is at or below 2000 ft (60 m) then the pressure settings do not need to be adjusted. 26 Rinnai Corporation EX7 / EX22 Manual

27 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. 2" 0" 0" 2" 40" Attach Back Covers (Sides Only) Attach back covers as shown. Engage Lugs Secure With Screws Rinnai Corporation EX7 / EX22 Manual 27

28 Flue Terminal Clearances STANDARD INSTALLATION OF FLUE MANIFOLD. Diagram below shows minimum clearances and distances from obstructions. Also check local regulations. Flammable Wall Non Flammable 0 (250mm) 24 (600mm) 20 Opposite Wall Floor D E B L F C B INSIDE CORNER DE TAIL G A B B FIXED CLOSED OPERABLE B OPERABLE J A TERMINATION Clearance in Ref. A also applies to anticipated snow line SNOW H B FIXED CLOSED I M X V AIR SUPPLY INLET VENT TERMINAL AREA WHERE TERMINAL IS NOT PERMITTTED K (600mm)24 (500mm) 28 Rinnai Corporation EX7 / EX22 Manual

29 Flue Terminal Clearances Ref Description Canadian Installations US Installations A B Clearance above grade, veranda, porch, deck, or balcony. (Take into account the anticipated snow line) Clearance to window or door that may be opened 2 inches (30 cm) 2 inches (30 cm) 6 inches (5 cm) for appliances < 0,000 BTUh; 2 inches (30 cm) for appliances > 0,000 BTUh and < 00,000 BTUh, 36 inches (9 cm) for appliances > 00,000 BTUh 6 inches (5 cm) for appliances < 0,000 BTUh; 9 inches (23 cm) for appliances > 0,000 BTUh and < 50,000 BTUh, 2 inches (30 cm) for appliances > 50,000 BTUh C Clearance to permanently closed * * D Vertical clearance to ventilated soffit, located above the terminal within a horizontal distance of 2 feet (6 cm) from the center line of the terminal * * E Clearance to unventilated soffit * * F Clearance to outside corner * * G Clearance to inside corner 20 inches (50 cm) 20 inches (50 cm) H Clearance to each side of center line extended above meter/regulator assembly 3 feet (9 cm) within a height 5 feet (4.5 m) above the meter/regulator assembly I Clearance to service regulator vent 3 feet (9 cm) * * J K L M Clearance to nonmechanical air supply inlet to building or the combustion air inlet to any other appliance Clearance to a mechanical air supply inlet Clearance above paved sidewalk or paved driveway located on public property Clearance under veranda, porch, deck, or balcony 6 inches (5 cm) for appliances < 0,000 BTUh; 2 inches (30 cm) for appliances > 0,000 BTUh and < 00,000 BTUh, 36 inches (9 cm) for appliances > 00,000 BTUh 6 feet (.83 m) 6 inches (5 cm) for appliances < 0,000 BTUh; 9 inches (23 cm) for appliances > 0,000 BTUh and < 50,000 BTUh, 2 inches (30 cm) for appliances > 50,000 BTUh 3 feet (9 cm) above if within 0 feet (3 m) horizontally 7 feet (2.3 m) * 2 inches (30 cm) to nonflammables 2 24 inches (60 cm) to flammables 2 2 inches (30 cm) to nonflammables 2 24 inches (60 cm) to flammables 2 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./NFPA 54 or CSA B49., clearances are in accordance with local installation codes and the requirements of the gas supplier. Rinnai Corporation EX7 / EX22 Manual 29

30 Dimensions " (280mm) 3 7/6" (88mm) 6 /2" (65mm) 3 3/8" (85mm) 2 3/6" (554mm) 9 5/6" (506mm) 8 7/6"(24mm) 2 3/5"(66mm) R9.9" (R25mm) R0.6" (R270mm) R8.0" (R206mm) " (25mm) 7 6/25"(448mm) Exhaust at rear of unit 8 9/6" (27mm) 9 5/8" (245mm) Power supply cable 29 /2" (750mm) 30 Rinnai Corporation EX7 / EX22 Manual

31 Installation Parts The following items are included with the appliance: Flue Manifold Spare rubber seal A Vent Kit, FOT-5 ( A Flue units only) (For weatherboard installations) Pipe Stopper A Pipe Stopper B Back Spacer Set Ring Manual Valve Set Owner s Manual Conversion Manual Conversion Kit Template Plastic tie for air inlet Plastic tie (L=250mm) Air Filter Screw (M4 20) For Flue Pipe Stopper B Screw (M4) For Back Spacer Set 6 Screw (M4) For Flue Manifold 3 Screw (M4) For Air Intake Clip 2 Wood Screws (M4.8 32) Wall Bracket Screws 5 Wall Bracket Spacer Bracket The following flue manifold sizes are available for different wall thicknesses: Name Kit No. fits walls S Vent Kit FOT /2 in (75-5 mm) A Vent Kit FOT-5 4 /2-9 /2 in (5-240 mm) B Vent Kit FOT-52 9 /2-5 3/4 in ( mm) C Vent Kit FOT /4-23 5/8 in ( mm) D Vent Kit FOT /8-3 /2 in ( mm) Rinnai Corporation EX7 / EX22 Manual 3

32 Drilling Flue Hole NOTICE Use a template (included) to determine allowable location of the flue hole For installation without using extension kits, the configuration of the flue manifold, air intake hose, and exhaust slide pipe should be as shown when installation is completed. 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 /8 inch (80 mm) drill. The center of the hole must be located anywhere within the shaded area, unless extension kits are used. See diagram. For weatherboard walls, drill through the center of the weatherboard from the outside first and then through the plasterboard. A template is provided. Flue Hole 3 /8" (80 mm) NOTICE Do not cut the intake hose. Cutting the intake hose may result in noise. 32 Rinnai Corporation EX7 / EX22 Manual

33 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. The termination cannot be vertical. 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.. Disassemble the flue manifold The flue consists of 3 parts: sleeve 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. Clearance to combustibles for the sleeve and flanges is zero inches. 2. Adjust the sleeve length Measure wall thickness through previously drilled 3 /8 inch (80 mm) hole. The end of the sleeve should protrude 3/6-3/8 inch (5-0 mm) from the outside wall. The sleeve is threaded for adjustment. Adjust the sleeve length to wall thickness plus 3/6-3/8 inch (5-0 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. Inside Connection Sleeve Terminal Remove extension if necessary 3. Attach the sleeve Attach to the inside wall using 3 screws arranging the flange so that the marking TOP is at the top. The flange is offset 2 to allow the condensate drain to the outside. 3 screws sleeve should extend 3/6-3/8 in (5-0 mm) Rinnai Corporation EX7 / EX22 Manual 33

34 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. 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 seal Terminal Locking tie 5. 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 Sleeve 6. 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 34 Rinnai Corporation EX7 / EX22 Manual

35 Extension Kit Installation CAUTION Secure the air intake hose and exhaust pipe with Pipe clamp B at intervals to prevent contact between the air intake hose and the exhaust pipe. If necessary, extension kits are available to extend the exhaust line and air intake hose between the manifold and the appliance. () Maximum vent length allowed is 3 feet (4 m). (2) Maximum vertical length allowed is 0 feet (3.0 m). (3) Any length (horizontal and vertical) in excess of 0 feet (3.0 m) must be sloped 3 downward toward the flue manifold to allow condensate to drain to the outside. (4) Do not allow any low points in the exhaust line where condensate will collect. (5) Vent extensions installed in unconditioned air space must be insulated with high temperature insulation and must be accessible. (6) Vent extensions must not be concealed per NFPA 54 and must be accessible allowing inspection and repair. Decorative covers are available from Rinnai. These figures show the 3 possible ways that the extension exhaust line and air intake hose may be directed away from the appliance. All 3 views are from behind the appliance. For your configuration, position the air intake hose as shown. Horizontal extension on left side Plastic tie Vertical extension on right side Vertical extension on left side Plastic tie Rinnai Corporation EX7 / EX22 Manual 35

36 Extension CAUTIONS Kit Installation INCORRECT Condensed water may accumulate here, and cause a blockage preventing combustion. Too many bends (limit is 2) Air intake hose is above exhaust pipe. CAUTION Never allow the exhaust pipe to sag, as condensed water may accumulate and cause incomplete combustion. Condensed water formed by combustion, will run back to the unit, and may overflow from the condensation pan if pipes are longer than 0 feet. Therefore, pipes exceeding these lengths should be made to drain to the outside by giving their horizontal portions 3 or more downward and outward slope. 3 slope(approximate) Less than 0 ft. 36 Rinnai Corporation EX7 / EX22 Manual

37 Extension Kit Installation CAUTION Use the pipe stoppers, connectors, clamps, and screws according to these instructions in order to ensure no leakage of exhaust gases. Clearances exhaust pipe to combustibles inch (25.4 mm) exhaust pipe to non-combustibles zero Clamps 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. Exhaust pipe Air intake hose Air intake hose Exhaust pipe 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. 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. 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. Do not straighten the bent pipe attached to the appliance. Male end Pipe stopper B Female end Pipe stopper A Adjust the angle 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 tie for air inlet. 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 EX7 / EX22 Manual 37

38 Extension Kit Installation EXHAUST PIPE (ADJUSTABLE) EXHAUST PIPE(NON ADJUSTABLE) AIR INTAKE HOSE BENT ELBOW LONG BENT ELBOW HOSE JOINT PIPE STOPPER A PIPE STOPPER B PIPE CLAMP B WALL-FIXTURE NUT SCREW A SCREW B Item Description FOT-29 FOT-220 FOT-22 FOT-58 FOT-222 FOT Exhaust Pipe (adjustable) in ( mm) Exhaust Pipe (adjustable) in ( mm) Exhaust Pipe - 40 in (06 mm) 50 Air Intake Hose in (750 mm) 50 Air Intake Hose in (.3 m) 50 Air Intake Hose in (2.3 m) Bent Elbow Long Bent Elbow 50 Hose Joint Pipe Stopper A Pipe Stopper B Pipe Clamp B Wall Fixture Nut Screw A Screw B 2 3 sets 4 sets 5 sets set 2 38 Rinnai Corporation EX7 / EX22 Manual

39 Connecting the Appliance. Attach the air intake hose to the flue manifold on either inlet position a or b, and secure with the plastic tie for air inlet as shown. The unused inlet is plugged with the rubber cap supplied on the manifold. When servicing unit replace plastic tie for air inlet with new one. (Available at local hardware store or contact local distributor.) 2. Connect the flue outlet to the manifold by extending the stainless steel sliding tube until it is fully inserted into the flue manifold. a Plastic tie for air inlet Sliding Tube b Flue Manifold Air inlet elbow Slide 3. Fit the pipe stopper A over the connection between the sliding tube and flue manifold. Engage the hook and rotate it until it snaps against the body of the clamp. Do not extend flue tube beyond red line. Pipe stopper A Hook 4. Fit the pipe stopper B between the sliding tube and the flue sliding tube. Secure with the 4mm screws supplied. The flue sliding tube is now locked into position. Slide the insulation cover up to the flue manifold and slip the securing ring over the cover as shown. Pipe stopper B Flue sliding tube Sliding tube Flue Manifold Screw Sliding tube Pipe stopper A Flue Manifold Pipe stopper A Fit Ring Slide insulation Cover Cover Slide to here 5. Install the bracket on the rear of the top spacer by tightening 2 screws. Top spacer 6. Install the wall bracket with two screws. Install the top spacer by clipping the spacer into the wall brackets and attaching it to the heater with 2 screws. Top spacer Spacer bracket Spacer bracket Spacer Wall bracket Up to 0 mm Adjustable Leg If necessary, the unit can be leveled using the adjustable legs under the front right and left hand side legs. Rinnai Corporation EX7 / EX22 Manual 39

40 Operating Instructions FOR YOUR SAFETY READ BEFORE OPERATING WARNING 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.. 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 If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. OPERATING INSTRUCTIONS OPEN 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. 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. 0. Combustion indicator is displayed when the burner is lit and is not displayed 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.. 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. TO TURN OFF GAS TO APPLIANCE 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. 40 Rinnai Corporation EX7 / EX22 Manual

41 Cut-Away Diagram Rinnai Corporation EX7 / EX22 Manual 4

42 Wiring Diagram CAUTION Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. If any of the original wire as supplied with the appliance must be replaced, it must be replaced with type 8 AWG wire or its equivalent. 42 Rinnai Corporation EX7 / EX22 Manual

43 Ladder Diagram Rinnai Corporation EX7 / EX22 Manual 43

44 Flow Diagram THERMISTOR 44 Rinnai Corporation EX7 / EX22 Manual

45 Parts List For replacement parts call Rinnai at Rinnai Corporation EX7 / EX22 Manual 45

46 Parts List 46 Rinnai Corporation EX7 / EX22 Manual

47 Parts List For replacement parts call Rinnai at Rinnai Corporation EX7 / EX22 Manual 47

48 Parts List 48 Rinnai Corporation EX7 / EX22 Manual

49 Parts List For replacement parts call Rinnai at Rinnai Corporation EX7 / EX22 Manual 49

50 Parts List ITEM PART NUMBER PART NAME QTY EX22 EX7 EX22W 00 REAR PANEL ASS'Y 556F TOP PLATE SUPPORTER 556F TOP PLATE 556F TOP PLATE 556F DECORATING FRONT PANEL 556F DECORATING FRONT PANEL 556F DECORATING FRONT PANEL (R) 556F DECORATING FRONT PANEL (R) 556F DECORATING FRONT PANEL (L) 556F-476B DECORATING FRONT PANEL (L) 556F-476B DECORATING FRONT PANEL (L) 556F-476C CONTROL P.C.B ASS'Y 556F CONTROL P.C.B ASS'Y 556F SIDE PANEL (R) 556F B 008 SIDE PANEL (R) 556F E 009 SIDE PANEL (L) 556F-456--B 009 SIDE PANEL (L) 556F-456--E 00 AIR FILTER SUPPORTER 556F-32 0 AIR FILTER SUPPORTER (SIDE) 556F AIR FILTER ASS'Y 556F AIR FILTER ASS'Y 556F SUPPORT BOARD TO FAN 556F LATCH CP LEG 556F HEAT EXCHANGER PACKING 554F LOUVER ASS'Y 556F LOUVER ASS'Y 556F STRIKE CP FRONT PANEL 556F FRONT PANEL 556F HEAT SHIELD PANEL 556F BACK SPACER TOP 556F BACK SPACER TOP 556F BACK SPACER (R) 556F BACK SPACER (R) 556F BACK SPACER (L) 43F BACK SPACER (L) 43F WARM AIR SEAL PANEL 556F WALL BRACKET 304F SPACER BRACKET RHF OPERATION BOX LID 556F LEG FIXING BOARD 550F RUBBER LEG 550F CORD PACKING B AU3-236-B CORD PACKING A AU3-236-A HEAT INSULATOR A 556F HEAT INSULATOR B 556F REAR PANEL PACKING 556F UNDER COVER TOTAL ASS'Y 556F UNDER COVER TOTAL ASS'Y 556F ON-OFF VALVE ASS'Y BRR INLET CAP REMARKS 50 Rinnai Corporation EX7 / EX22 Manual

51 Parts List ITEM PART NUMBER PART NAME QTY EX22 EX7 EX22W REMARKS 00 HEAT EXCHANGER ASS'Y R558F-00 0 FIXING PLATE 556F COMBUSTION CHAMBER FIXER 556F OHS FIXER 556F BURNER BOX ASS'Y 556F FLANGE BOARD R558F SEAL PLATE B 557F ELECTRODE PLATE RHF FLAME ROD 00F FLAME ROD PACKING 554F-48 BURNER ASS'Y B3A SEAL PLATE PACKING 556F BURNER BOX SUPPORTER ASS'Y 556F BURNER BOX PACKING 556F-2 5 BURNER BOX FITTING PLATE ASS'Y R558F-0 6 DAMPER 556F SECONDARY AIR DAMPER 557F FITTING PLATE PACKING R558F-07 9 MANIFOLD 556F INJECTOR AU LPG 20 INJECTOR AU NG 2 MANIFOLD PACKING 556F ELECTRODE MOUNTING PLATE 554F-4 23 ELECTRODE 556F ELECTRODE PACKING 554F GAS CONTROL ASS'Y C PC GAS CONTROL ASS'Y D PC INLET REINFOCEMENT BOARD 43F INTER CONNECTION ASS'Y R43F O RING M0B BRIND SCREW AU O RING M0B PACKING C3I-7 33 GAS FILTER RCK GAS INLET 43F-0 35 OUTLET D 554F AIR INLET 556F AIR INLET PACKING RHF300F DRAIN PAN ASS'Y 556F BUSHING CP AIR INTAKE HOSE RHF D 4 AIR INLET ELBOW RHF CONNECTING TUBE 556F CONNECTING TUBE FIXER 556F COMBUSTION FAN CASING ASS'Y 556F SCREW FOR MOTOR CP CUSHION RUBBER 308F FLUE SLIDING TUBE ASS'Y R558F O RING E RHF E 54 O RING D FOT SLIDING TUBE RHF COVER 302F-03 Rinnai Corporation EX7 / EX22 Manual 5

52 Parts List ITEM PART NUMBER PART NAME QTY EX22 EX7 EX22W 57 RING 302F VENT ASS'Y 43F BACK PRESSURE PIPE ASS'Y 556F O RING M0B--4 6 COMBUSTION FAN MOTOR ASS'Y 556F PIPE STOPPER B 305F PIPE STOPPER A 305F POWER SUPPLY CORD BRACKET RC TUBE D 556F TUBE A(CLEAR) 004F TUBE B(BLACK) 004F CONNECTING TUBE FIXER R558F CONVECTION FAN TOTAL ASS'Y 556F CONVECTION MOTOR 556F MOTOR BASE 556F CONVECTION FAN 556F CONVECTION FAN CASING B 556F-257-2B 404 BEARING RC HUMIDIFIER TRAY LID 556F HUMIDIFIER TRAY 556F IGNITER FIXER 556F OHS FITTING PLATE 556F HEAT SHIELD BOARD ASS'Y R558F CIRCUIT BOARD SPACER CP CABLE CLIP CP WIRE CLIP CP CLAMP CP CLAMP CP BACK SPACER (R) FIXER 556F P.C.BOARD TOTAL ASS'Y 556F THERMISTOR HARNESS 556F POWER SUPPLY CORD CP TRANSFORMER ET SV IG HARNESS 556F MOTOR HARNESS 556F HIGH TENSION CORD 43F CONVECTION MOTOR HARNESS R558F OVERHEAT SWITCH ES-07 7 OVERHEAT SWITCH ES IGNITER EI-6 73 SLEEVE TF COVER 556F FR LEAD 43F OVERHEAT SWITCH ES OHS3 HARNESS ASS'Y R558F OHS3 HARNESS R558F PRESSURE SENSOR 004F SENSOR LEAD ASS'Y 004F SCREW ZAA0420SZ 802 SCREW ZEAB0408UK 803 SCREW ZEAB0408SZ 804 SCREW ZEDB042SZ REMARKS 52 Rinnai Corporation EX7 / EX22 Manual

53 Parts List ITEM PART NUMBER PART NAME QTY EX22 EX7 EX22W REMARKS 805 SCREW ZEAB040SZ 806 SCREW ZEDB0408SZ 807 SCREW ZEAB046SZ 808 SCREW ZBD040SZ 809 SCREW CP SCREW ZDAA040SZ 8 SCREW ZEAB0406SZ 82 SCREW ZEDB040SZ 83 SCREW ZEAB0408SC 84 SCREW ZDAA2.608SN 85 SCREW ZAA0422SZ 86 SCREW ZBA040SZ 87 SCREW ZHAA0406SZ 89 SCREW ZGAB0406SZ 82 SCREW CP SCREW ZBB040SC 823 SCREW ZAA0408SZ 824 SCREW ZHAA040SZ 900 RATING PLATE CP LP 900 RATING PLATE CP NG 900 RATING PLATE CP LP 900 RATING PLATE CP NG 90 RATING PLATE CP LP 90 RATING PLATE CP NG 90 RATING PLATE CP LP 90 RATING PLATE CP NG 902 RATING PLATE SUPPORT LABEL CP RATING PLATE SUPPORT LABEL CP RATING PLATE SUPPORT LABEL CP RATING PLATE SUPPORT LABEL CP OPERATION LABEL R558F FILTER LABEL 00F CAUTION LABEL 43F CAUTION LABEL D 00F CAUTION LABEL 00F PROPANE STICKER 43F NG STICKER 43F EXHAUST CAUTION LABEL 00F OWNER'S MANUAL R558F CONVERSION MANUAL R558F TEMPLATE 556F CONVERSION KIT 556F LP to NG 94 CONVERSION KIT 556F NG to LP 94 CONVERSION KIT 556F LP to NG 94 CONVERSION KIT 556F NG to LP Rinnai Corporation EX7 / EX22 Manual 53

54 Warranty Information Consumer Support 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 Heat Exchanger All Other Parts Reasonable Labor Period of Coverage 0 years from date of purchase * 5 years from date of purchase 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. 54 Rinnai Corporation EX7 / EX22 Manual

55 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 (0) 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 6 50% 7 40% 8 30% 9 20% 0 0% 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 ( call Rinnai at or write to Rinnai at 03 International Drive, Peachtree City, Georgia 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 For those without internet access, please call -866-RINNAI ( ). 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 EX7 / EX22 Manual 55

56 Rinnai America Corporation 03 International Drive Peachtree City, GA TOLL FREE: 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 Register your product at or call -866-RINNAI ( ) R558F-050(0) Printed in Japan Rinnai America Corporation