HEATING SOLUTIONS. endless. innovation THE SIMPLICITY OF EASY INSTALLATION BOILER POCKET GUIDE FOR TRADE PROFESSIONALS

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1 HEATING SOLUTIONS endless innovation THE SIMPLICITY OF EASY INSTALLATION BOILER POCKET GUIDE FOR TRADE PROFESSIONALS

2 2 Table of Contents Boiler Specifications...5 Technical Readout / Technical Codes...6 Accessing Menus...7 Parameter Menu: Key Parameters...8 Information Menu...9 Service Menu...10 Error Menu...10 Preset Curve Values (Parameter 2)...11 Combustion Testing (Oxygen Level)...12 Cleaning and Flushing the Hydronic System...13 Gas and Water Pressures System Flushing, Cleaners, Antifreeze and Inhibitors Bypassing De-aeration Program Basic Troubleshooting...16 Service Codes Temperature Resistance Table...20 Installation Schematics/Diagrams E Boiler Domestic Hot Water Piping with Thermostatic Mixing Valve...21 E Boiler Single Zone Circuit...22 E50CR Boiler No Low Loss Header...23 E Series Boiler Primary Secondary Piping...24 Multi Zone with DHW Priority...25 Q Boiler Domestic Hot Water from Indirect Tank...26 Electrical Connections...27 Maximum Equivalent Length...28 Rinnai Venting Diagrams...29 Notes...31 Disclaimer This Pocket Guide was designed as a quick-reference guide, and is not intended to replace the Owner s Manual. Rinnai reserves the right to update this manual without prior notice. Dedicated Technical Support 888-RINNAIS or (For Technical Assistance Only) SCAQMD, LOW LEAD

3 3 HEATING SOLUTIONS Rinnai Condensing Boilers provide superior comfort and overall system efficiency than any other boiler. All Rinnai boilers are delivered with an outdoor sensor for increased fuel efficiency as well as integrated modulating circulator pumps for decreasing electrical consumption. Rinnai Boilers default settings are adjusted for the most common applications including high-temp baseboards, radiators or hydro-air. Be sure to verify the default parameters are set appropriately for your application. See Page 8 for key parameters to review. This quick-reference Pocket Guide is not intended to replace the Installation and Service Manual. Rinnai Boilers come factory adjusted for high-temperature convectors. The curves and settings should be adjusted to match your system type and needs. For peak efficiency, the boiler should not be left at the high-temperature settings unless the installation uses convectors (baseboards) as the primary heat emitters. All installations require that the boiler be programmed for the correct altitude and venting lengths. See the Installation and Service Manual for instructions on setting these parameters.

4 4 E SERIES Q SERIES QP SERIES KEY TO CONTROL BUTTONS * = + = - = Heating On / Off Increase value when changing parameters Hot Water On / Off Decrease value when changing parameters Frost Protection (Continuous Pump) On / Off Store (enter) = STEP = MODE = RESET * Note: Store light should not be illuminated during normal operation

5 Boiler Specifications DHW Flow in GPM and LPM Min/Max Input BTU Min/Max Input BTU Efficiency (NG Hot Water Production 75 F Rise 50 F Rise Models (Heating) (DHW) and LP) 41 C Rise) 28 C Rise) E50CR 13,600-50,000 (NG) 13,600-85,000 (NG) 95.6% Flat Plate Heat Exchanger 2.1 (7.9) 3.1 (11.7) E75CR E110CR 13,600-75,000 (NG) 37,000-75,000 (LP) 26, ,000 (NG) 59, ,000 (LP) 13,600-85,000 (NG) 37,000-85,000 (LP) 26, ,000 (NG) 59, ,000 (LP) 95.5% Flat Plate Heat Exchanger 2.1 (7.9) 3.1 (11.7) 95.5% Flat Plate Heat Exchanger 3.2 (12.1) 4.6 (17.5) E60SR 13,600-60,000 (NG) 37,000-60,000 (LP) 95.5% Indirect Tank Compatible E85SR 13,600-85,000 (NG) 37,000-85,000 (LP) 95.4% Indirect Tank Compatible E110SR 26, ,000 (NG) 59, ,000 (LP) 95.5% Indirect Tank Compatible Q85S 17,000-85,000 (NG) 95.4% Indirect Tank Compatible Q130S 26, ,000 (NG) 59, ,000 (LP) 95.4% Indirect Tank Compatible Q175S 35, ,000 (NG) 117, ,000 (LP) 95.0% Indirect Tank Compatible Q205S 41, ,000 (NG) 95.0% Indirect Tank Compatible 117, ,000 (LP) Q175C 35, ,000 (NG) 117, ,000 (LP) 95.0% 6.6 gallon indirect tank inside 4.1 (15.6) 6.2 (23.5) QP130 26, ,000 (NG) 95.4% 24 gallon buffer tank 211GPH/799LPH Q = Series / E = Economy Series / QP = Q Premier Series / Model number = Max KBtu S = Solo (Heat Only) / C = Combi (domestic hot water is included) * Combination boiler selection must include DHW requirements based on winter groundwater temperature. ** Based on GAMA testing standard for indirect-fired water heaters. HEATING SOLUTIONS 5

6 6 Technical Readout / Technical Codes The On/Off switch should not be used to reset or disengage the boiler. If the power supply to the boiler is interrupted, then the boiler s 17 minute den-aeration program will initiate. To reset the boiler if a code appears, press the button marked R or RESET. Holding the Step or the technical readout. button for 5 seconds will display State One: P followed by the system pressure. State Two: The boiler s operating code (0 thru 9 or A, F, and H as shown) followed by the supply temperature in º F: A F H = No heat demand = Fan pre/post purge = Ignition phase = Burner active for central heat = Burner active for DHW = Fan check = Burner off while call for heat or DHW and target temperature is reached during demand = Pump overrun phase for central heat = Pump overrun phase for DHW = Burner off due to high supply temp* = Automatic de-aeration program* = SERV fan test activated in SERV mode = SERV burner test active in SERV mode * Ensure heating and DHW programs are activated to start deaeration program. The deaeration cycle will last 17 minutes following any power interruptions. Do not reset boiler by switching off power.

7 7 HEATING SOLUTIONS Enter the 123 Code to Access the Second Tier Technical Adjustments: Press the Mode or button for 5 seconds. The letter C and a random number will appear. Press the or button until C123 appears. Press Store or to enter. NOTE: After pressing the value will blink once to confirm acceptance. Press to scroll through the four menu or chapters: PARA, INFO, SERV, ERRO. When the desired chapter is displayed, press button until the desired menu item is viewed. If a change is needed (only available in PARA and SERV), pressing + or - will alter the value. Pressing will save the new value (confirmed with one blink). To scroll though various PARAMETERS, SERVICE options, ERRORS or INFO data, press the button. To exit these chapters, repeatedly press until STBY or GOOD appears. After 20 minutes of inactivity the boiler will default to normal operation. To reenter the Installer level, repeat the steps above. Accessing Menus Four different Menus are available in the 2nd tier technical adjustments: PARA menu Parameters: System Design, Review and Adjust. INFO menu Information: Boiler Sensor Readings, Consumption, Hours of Operation (no adjustments in this menu). SERV menu Service: Burner Power, Fan Power, Pump Power. ERRO menu Errors: System stores up to six error codes and the operating condition at time of error. (no adjustments in this menu).

8 Parameter Menu: Key Parameters 8 PARA Default Range Description 1* 176º F 68 to 176º F Maximum supply water temperature 2* 00 00, 02 to 04 Heating System Type: Optimizes outdoor reset curve and boiler operation 3 Maximum Output Power Min to Max output Maximum heating output in Kilowatts. KW X 3415 = BTU 5* to 3.5 K Factor of outdoor reset curve (slope of reset curve) 7* 14º F -4º F to 32º F Outdoor reset curve coldest design day setting 14* 10º F/min 0º F to 28º F Gradient control speed º F per minute (temperature acceleration rate) º F E75CR & E110CR 32º F All Other Boilers 32º F to 158º F Minimum supply water temperature for heating mode (reset curve base point) º F 104º F to 176º F DHW indirect tank temperature All E50's 10 E Series 20 E Refined 00, 10, E boiler plate warming (maintain DHW flat plate temperature) 10 E boiler plate warming and flowswitch DHW activation 20 E boiler flowswitch DHW activation only to 100 Altitude and vent compensation factor, (See section 6.7 of the boiler manuals) *Note: Parameters 1, 5, 6 and 14 are contained in the preset curves PARA 2* but may be further adjusted. CH= Central Heat

9 Information Menu (information only no adjustments) Info Unit of Description Notes Measurement 1 º F Supply (flow) water temperature T1 4 º F Return water temperature T2 5 º F DHW temperature T3 DHW cold water inlet temperature on E Series boilers 7 º F Outdoor temperature T4 16 % Percentage of total power 17 kw Gas input power in kw (multiply by 3415 for BTU) 18 kw Output power in kw (multiply by 3415 for BTU) 20 N/A Bus communication indication No Unit Value 21 GJ (Gigajoules) Consumption total 22 GJ Consumption total heating only 23 GJ Consumption total DHW only 24 Hours Total burner run hours 25 Hours Total heating only burner run hours 26 Hours Total DHW only burner run hours 32 Hours Total run hours 37 Hours Total pump hours (heating and DHW) 46 Hours Count down to service message 1 gigajoule (GJ) = 947,817 BtuH or 9.48 therms HEATING SOLUTIONS 9

10 Service Menu 10 SERV Value Range Description 1 OFF OFF MAX Burner adjustable for O2 and gas pressure testing 2 OFF OFF MAX Fan adjustable with burner off 3 OFF OFF MAX Pump adjustable with burner on or off 4 OFF OFF ON Simulation Mode Boiler will not operate in showroom mode. Note To deactivate service modes 1, 2 or 3, you must reduce the values to minimum using the minus key then release and press the minus key again. Error Menu (information only no adjustments) ERRO Value Description Err. L-Err.5 L, 1, 2, 3, 4, 5 Last six error codes 1 E xx Error code reported 2 A or 9 through 0 Operation status of the boiler at time of error 3 º F Supply (flow) water temperature T1 at time of error 4 º F Return water temperature T2 at time of error 5 kw Load at time of error (multiply by 3415 for BTU) 6 % Pump capacity at time of error

11 Preset Curve Values (Parameter 2) Parameter 2 Type of Heat Emitter Max Supply (Para 1) Comment 00 (Preset curve #1) Factory Default 02 (Preset curve #2) 03 (Preset curve #3) 04 (Preset curve #4) Select the preset based on the most common type of heat emitter in the system Baseboard radiators or standard air handlers The maximum supply water temperature the boiler will provide K-Factor (Para 5) The slope of the curve Climate Zone ** (Para 7) Coldest day of the year (outdoor design temp) Gradient Control (Para 14) Rate in degrees per minute that the boiler supply water temperature increases Min Supply * (Para 27) Lowest possible supply water temperature during a call for heat 176 F F 10 F/minute 100 F * Large radiators 158 F F 10 F/minute 100 F Under floor (staple up) or high efficiency air handler 140 F F 8 F/minute 100 F In-floor heating only 122 F F 6 F/minute 100 F * Parameter 27 is the minimum supply water temperature and should be adjusted for the systems heat emitters. For example, most air handlers will require 120o F or greater. ** Parameter 7 is the climate zone and commonly referred to as design day temperature; default setting is 14 F and should be adjusted to the regional design day temperature. HEATING SOLUTIONS 11

12 12 QUICK TIP FOR COMMISSIONING Adjust O 2 percentage here with 4 mm allen wrench or 3/8 inch slotted driver Combustion Testing (Oxygen Level) First verify proper incoming gas pressure. Ensure the analyzer is properly calibrated, then place the analyzer probe in the vent stack test point. Enter 123 code and proceed to SERV menu by pressing or Mode Service (SERV) menu. Press the STEP button until 1 is shown (1 and OFF will alternate). Press the + (plus) button until the maximum value (kw) is achieved (high fire). O 2 percentages should be: NG full load 4.7% target (range %). LP full load 5.1% target (range %). Press the - (minus) button and slowly ramp the burners down until the minimum value is achieved. NG minimum load must be at least 0.5% higher than full load, but no higher than 7.5%. Example: If full load O2 is 5.0%, minimum load O2 must be between 5.5 and 7.5%. LP minimum load must be at least 0.2% higher than than full load, but no higher than 7.3%. Example: If full load O2 is 5.0%, minimum load O2 must be between 5.2 and 7.3%. If needed, turn the adjustment screw in the gas/fan assembly: Clockwise to increase oxygen level (lessens fuel). Counterclockwise to decrease oxygen level (increases fuel). Note: Only make adjustment in high fire

13 13 HEATING SOLUTIONS Cleaning and Flushing the Hydronic System Before commissioning, the complete hydronic system must be thoroughly cleaned and flushed with an approved system cleaner. Flush out the cleaner until clean water runs free with no sediment. NOTE: This boiler contains aluminum components. System cleaners are not to be used in the boiler (use isolating valves at header assembly). APPROVED SYSTEM CLEANERS are Noble Noburst Hydronic System Cleaner, Fernox F3 System Cleaner, Rho-mar Hydro-Solv 9100, and Sentinel X400. APPROVED SYSTEM INHIBITORS are Rhomar Pro-tek/922, Noble Noburst AL Inhibitor and Sentinel X100. Use only potable water or Rinnai-approved inhibited propylene glycol (50% maximum) for filling the system. APPROVED ANTIFREEZES: Rhomar RhoGard Multi-Metal (AL safe), Sentinel X500, Noble Noburst AL and Fernox Alphi 11. Follow the guidelines in the Boiler Installation and Service Manual for proper water quality (less than 10.5 GPG hardness) and ph ( ). Recommended fill pressure: PSI Less than 10 PSI the boiler will not operate. 50% fire rate is from 10 to 11.7 PSI. Required inlet gas pressure: NG 3 to 10.5" W.C. at full fire. LP 8 to 14" W.C. at full fire.

14 14 De-aerate Program Bypass Method The purpose of the De-aerate Program Bypass Method is to provide a method for bypassing the 17-minute boiler de-aerate program for the service technician. The boiler runs this program whenever it is first connected or reconnected to electrical power. De-aeration is also triggered when the boiler detects the system pressure has dropped below 10 psi. This program is an effective method of purging air from the boiler after the system has been filled or serviced. While the boiler is running the de-aerate program it will show A and a random 3-digit number on the display. Never bypass de-aeration during commissioning or if the system pressure has dropped below 10 psi. If there is any chance that air has entered the system, de-aeration is critical to prevent damage to the boiler. A technician servicing or troubleshooting the boiler may turn off power for certain tasks that do not involve system pressure, and this bypass method will avoid the 17-minute wait when the power to the boiler is restored.! WARNING DO NOT bypass the de-aeration program during commissioning or if any part of the system has been opened or disconnected. Failure to properly de-aerate the boiler and system may result in damage to the boiler. This damage will not be covered by the boiler warranty.

15 15 HEATING SOLUTIONS De-aerate Program Bypass Method (con t) STEP 1 STEP 2 STEP 3 STEP 4 Press the MODE button for 5 seconds. The display shows CODE followed by a random 3-digit number Press the + or the - until code C123 is shown Press the STORE button to confirm. Display will blink once Now you have entered to the installer menu. Press and release the RESET button to end the de-aeration program De-aeation has only been bypassed not deactivated. Whenever the power supply is interupted De-aeration will run unless bypassed.

16 Basic Troubleshooting 16 Issues that may not post a blocking or error code Description Diagnostic Points Central heating but no DHW Ensure DHW program is activated Ensure RS100 time programs are set correctly Ensure diverter valve is functioning correctly and not binding DHW but no central heating Central heating with no demand Insufficient volume of DHW Low DHW temperature Insufficient recovery of indirect tank when paired with a Q Series bolier using a three-way valve kit Heat emitters take too long to heat or do not reach temperature Continuous operation with no call for heat DHW flow switch stuck in closed position, verify continuity Remove and inspect flow switch for debris; reinstall with arrow pointing UP Check for DHW leak if plate warming program is active Verify thermostat or end switch closure across 22 and 23 Ensure the continuous pump option isn t engaged Ensure diverter valve is functioning correctly and not binding Disconnect all field wiring to terminals 20/21 and 22/23 to ensure peripheral controls are not creating a false heating demand Verify hot and cold lines are not crossed Ensure the flow restrictor is not blocked with debris Ensure the domestic heat exchanger is not scaled Verify thermostatic mixing valve is set correctly Confirm that the correct flow restrictor has been installed for Combi boiler models only Depending on application, check DHW parameter settings Maximum capacity of the three-way valve for indirect tanks is 130,000 BTU Check tank manufacturer s required flow rates for given outputs Verify that T3 is properly fitted into the tank s sensor well Check thermostat or RS100 settings; verify parameters 1, 2, 5, 14 and 27 RS 100 used without OA sensor, install appropriate resistor or OA sensor Check technical read out Ensure PARA 4 is set to 00; a setting of 01 will cause the boiler to operate continuously on the day curve when 22 and 23 are closed and operate on the night curve when the contacts are open This is an abridged list with abbreviated explanations of the blocking codes. For a complete list of blocking codes and complete blocking code information please refer to the installation and service manual.

17 Service Codes The six most recent error codes are stored in the MCBA with peripheral data such as flow, return, outdoor temperatures, CH or DHW demand at the time of error, etc. Blocking codes (BL) BL codes temporarily stop operation. The boiler will attempt to relight without intervention (repetitive BL codes may change to an Error code).there must be a demand on the boiler for a BL code to occur Code Description Diagnostic Points BL 01 External Safety Contact Open Ensure factory installed jumper is secure or the device connected through terminals 24 & 25; pump will continue to run at 25%. Boiler continues to operate at maximum set temperature. BL05 No outdoor sensor connected Connect outdoor sensor BL 11 BL 12 BL 67 Max ΔT between T1 and T2 exceeded in CH mode Max ΔT between T1 and T2 exceeded in DHW mode A ΔT is detected between T1 and T2 (T1<T2) while the burner is not in operation Pump continues to run at minimum capacity in CH mode; check for blockage on the boiler side of the low loss header (shut off valve closed, clogged internal filter, etc) Pump continues to run at minimum capacity in DHW mode; check for blockage of DHW priority loop (shutoff valve closed, diverter valve malfunction, etc) or an undersized indirect tank Another heat source such as a wood boiler or solar may be in operation; the burner will restart after the ΔT stabilizes. If no external heat source check T1 and T2 sensor resistance. BL 81 Flue gas sensor falsely detected Wet-dry condition at sensor connection; call technical support for remedy BL 85 No water flow detected, pump stuck, boiler air bound De-aeration will start and run until flow is detected; check the pressure sensor for debris; check to see if pump is moving freely; check boiler return filter for debris BL 86 Power frequency fluctuations The frequency of the supplied power is fluctuating or outside the operating range of the boiler; power must be 60Hz ± 1.5Hz HEATING SOLUTIONS 17

18 Service Codes 18 The six most recent error codes are stored in the MCBA with peripheral data such as flow, return, and outdoor temperatures, CH or DHW demand at the time of error, etc. Error Codes Error codes will require intervention to restart the boiler Code Description Diagnostic Points FUSE The 24V circuit is open Check F3, confirm 24V transformer is connected; check all 24V components for a possible short (Gas valve, Fan, etc.) E 00 Flame rod current detected without flame Inspect the flame rod for a short circuit; inspect ground E 02 Ignition failure (boiler attempts 5 starts or restarts before error) Ensure adequate air and gas is supplied to the boiler; it is common with new propane tanks to have non combustibles still present in them; verify purity with an alternate gas source (portable propane tank) E 03 Gas valve connection faulty Ensure gas valve is plugged in correctly E 04 Power to the boiler is lost during an error read-out Reset the boiler and investigate the initial error in the Error History Chapter E 05 Control unit error Check if the incoming voltage is within specifications; check the connection between the ribbon cable and the display and MCBA; EEPROM error E 12 High Limit Switch Open Circuit Air or debris in the boiler and system, loose wire, or high limit switch error E 14 Temperature sensor communication problem Check T1, T2 and T3 temperature sensors connection and resistance. Verify no voltage on connections to terminals 16 and 17. E 18 Maximum supply (flow) water temperature exceeded (T1 is > 212 F) Verify the resistance of the sensor; check the flow temperature with an alternate device; check for blockages in the boiler

19 Error codes (continued) E 19 Maximum return water temperature exceeded (T2 is > 212 F) Verify the resistance of the sensor; check the return temperature with an alternate device; check for external heating source E 28 No signal from combustion fan Ensure the fan and wiring are undamaged E 29 Fan turning during off cycle Possible wind condition at termination; chimney effect in vent stack or large barometric differential-rearrange vent configuration Negative Pressure on Vent System Check vent, venting and intake air must be installed according to manual. If vent system ok - replace MCBA or fan. E 31 Supply (flow) temperature sensor (T1) signal error Ensure the sensor is connected correctly. E 32 Return temperature sensor (T2) signal error Confirm resistance reading with temperature chart. E 36 Supply (flow) temperature sensor (T1) open See Temperature Resistance Table below this chart. E 37 Return temperature sensor (T2) open E 68 No software installed Both MCBA and EPROM/display have no software (see manual) E 69 Software or communication conflict between MCBA and display/eeprom This is an abridged list with abbreviated explanations of the blocking codes. For a complete list of blocking codes and complete blocking code information please refer to the installation and service manual. Check all connections. E Series Disconnect and Re-connect E-Prom Chip Q Series Disconnect and Re-connect flat cable from MCBA Board and Remote Display. HEATING SOLUTIONS 19

20 20 Temperature Resistance Table All Sensors Temperature Resistance Table -4 F -20 C 98.0 kω 68 F 20 C 15.0 kω -0.4 F -18 C 90.0 kω 71.6 F 22 C 14.0 kω 3.2 F -16 C 82.0 kω 75.2 F 24 C 12.9 kω 6.8 F -14 C 74.0 kω 78.8 F 26 C 11.9 kω 10.4 F -12 C 66.0 kω 82.4 F 28 C 10.8 kω 14 F -10 C 58.0 kω 86 F 30 C 9.8 kω 17.6 F -8 C 53.5 kω 89.6 F 32 C 9.1 kω 21.2 F -6 C 49.0 kω 93.2 F 34 C 8.5 kω 24.8 F -4 C 45.0 kω 96.8 F 36 C 7.9 kω 28.4 F -2 C 40.5 kω F 38 C 7.2 kω 32 F 0 C 36.0 kω 104 F 40 C 6.5 kω 35.6 F 2 C 33.5 kω 113 F 45 C 5.6 kω 39.2 F 4 C 30.9 kω 122 F 50 C 4.6 kω 42.8 F 6 C 28.2 kω 131 F 55 C 4.0 kω 46.4 F 8 C 25.6 kω 140 F 60 C 3.4 kω 50 F 10 C 23.0 kω 158 F 70 C 2.3 kω 53.6 F 12 C 21.4 kω 176 F 80 C 1.7 kω 57.2 F 14 C 19.9 kω 194 F 90 C 1.3 kω 60.8 F 16 C 18.1 kω 212 F 100 C 0.95 kω 64.4 F 18 C 16.6 kω -22 = open circuit. Ω = ohms

21 Note: The next set of diagrams are for illustration purposes only. Reference the Installation Manual. E SERIES BOILER DOMESTIC HOT WATER PIPING WITH THERMOSTATIC MIXING VALVE * HEATING SOLUTIONS *Use Thermostatic Mixer with checks 21

22 E SERIES BOILERS SINGLE ZONE: LLH 22

23 E SERIES BOILERS SINGLE ZONE: DIRECT COUPLE NOTE: Single serial flow loop shown. The E refined boilers can be used in single-zone applications within the stated flow and dp limits. See the installation manual for more information. HEATING SOLUTIONS 23

24 E SERIES BOILER PRIMARY SECONDARY PIPING 24 Outdoor Sensor

25 MULTI ZONE & DHW PRIORITY NOTE: Pump relay must have a priority end switch to allow for DHW operation. The ppriority end switch shall be connected to terminals on the boiler. HEATING SOLUTIONS 25

26 Q BOILER DOMESTIC HOT WATER FROM INDIRECT TANK (3-WAY VALVE) 26 Outdoor Sensor Part. No : For the Q85S and Q130S Part. No : For the Q175S and Q205S

27 ELECTRICAL CONNECTIONS The following is a brief overview of the connection block on the boiler control tower. Please refer to the installation manual and Rinnai s recommended application guide for more details or contact Rinnai s Engineering Department as needed Cylinder connection 3-Way valve Main Power Supply (max draw 5 Amps) N=Neutral, L=Hot (L1) Not Used External pump not to exceed 2 Amps or 230 Watts E Series Combi Do not use. E Series Solo Models DHW Pump Q Series Solo Models System Pump QP Series Internal DHW Pum Not Used E Series Combi Integrated 3-Way valve and T3 DHW Sensor E Series Solo Not Used Q Series Optional DHW 3-Way valve connection and DHW tank sensor or Aquastat (ensures DHW priority) Outdoor reset sensor (included with boiler) On/Off room thermostat or End Switch (dry contact, do not apply voltage), jumping these points will cause the boiler to fire 24V power supply 100 ma max draw. Bus room thermostat (RS100) IMPORTANT: For single zone systems, use only electronic thermostats that have an onboard battery. Do not use a power-stealing electronic thermostat as it will cause erratic operation. External safety connections (shipped with jumper) NOTE: Boiler will not operate without a closed circuit (through jumper, external safety high limit control, etc.) HEATING SOLUTIONS 27

28 Maximum Equivalent Length 28 Vent type 2" PPS Single Pipe (Room Air) & Twin Pipe 2" PPS Twin Pipe to 2"/4" PPS Concentric Termination All models except Q175 and Q205 Q175C/Q175S Q205S feet (m) feet (m) feet (m) 40 (12.12) 40 (12.12) 2" PP Flex Vent 20 (6.10) 2" PVC 20 (6.10) 3" PPS Single Pipe (Room Air) & Twin Pipe 3" PPS Twin Pipe to 3"/5" PPS Concentric Termination 100 (30.48) 80 (24.38) 40 (12.12) 100 (30.48) 80 (24.38) 40 (12.12) 3"/5" Concentric Pipe 100 (30.48) 80 (24.38) 40 (12.12) 3" PP Flex Vent 50 (15.24) 40 (12.12) 20 (6.10) 3" PVC/CPVC Single Pipe & Twin Pipe 4" PVC Vents up to 100ft and is approved on E50CR, E75CR, E60SR, E85SR, Q85S. 100 (30.48) 80 (24.38) 40 (12.12)

29 BOILER VENTING DIAGRAMS Twin-pipe with concentric sidewall termination Vertical vent and horizontal air intake Twin-pipe with concentric vertical termination Twin-pipe with parallel vertical termination Single pipe vertical termination with room intake air Twin-pipe with parallel sidewall termination Single pipe horizontal termination with room intake air Concentric pipe with horizontal sidewall termination Concentric pipe with roof termination Chimney Liner: Simpson Fas-n-seal Duravent flex liner HEATING SOLUTIONS Venting diagrams are for illustration purposes only. 29

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32 Learn more about Rinnai high-performance Tankless Water Heaters, Hybrid Water Heating Systems, Boilers, Vent-Free Fan Convectors and EnergySaver Direct Vent Wall Furnaces at: rinnai.us rinnai.ca HEATING SOLUTIONS Rinnai America Corporation 103 International Drive, Peachtree City, GA rinnai.us 2017 Rinnai America Corporation. Rinnai America Corporation continually updates materials, and as such, content is subject to change without notice. Local, state, provincial, federal and national fuel gas codes must be adhered to prior to and upon installation PG r5 8/2017