Rinnai I Series Installation And Operation Manual

Wall-mounted, gas-fired combi boiler, central heating and domestic hot water

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Page 1 − 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. READ AND SAVE THIS MANUAL Rinnai I-Series Condensing Boiler Combi Manual...
Page 2: Table Of Contents
8.5 Piping Diagram for a Basic CH System (With Hydraulic Separation) ..............56 8.6 Hydraulic Separation ............................57 8.7 Connect the Pressure Relief Valves (DHW and CH) ................... 59 8.8 Connect the Condensate Drain Line ........................60 8.9 Condensate Pump Safety Switch Wiring ......................61 Rinnai I-Series Condensing Boiler Combi Manual...
Page 3: Table Of Contents
14.9 DHW Pressure Drop and Flow Curve ......................127 14.10 Guidelines for Additional DHW Controller (Optional) ................. 128 14.11 Remove a Boiler from a Common Vent System ................... 130 14.12 Massachusetts State Gas Regulations ......................131 14.13 Warranty ..............................132 Rinnai I-Series Condensing Boiler Combi Manual...
Page 4: Safety
Thank you for purchasing a Rinnai Condensing Boiler. Before installing and operating this boiler, be sure to read these instructions • A trained and qualified professional completely and carefully to familiarize must install the boiler, inspect it, and yourself with the boiler’s features and leak test it before use.
Page 5: Safety Symbols
DANGER appliance. Indicates an imminently hazardous • Always check the water temperature situation which, if not avoided, will before entering a shower or bath. result in personal injury or death. Rinnai I-Series Condensing Boiler Combi Manual...
Page 6 It is strongly recommended that you use a should only be removed for service/ trained and qualified professional who has maintenance or replacing internal attended a Rinnai installation training class components. to adjust parameter settings. • Do not use an extension cord or adapter •...
Page 7: Front View
Accessories The I-Series Condensing Boiler is a wall-mounted, gas-fired boiler designed to providing heating and domestic hot water. For complete boiler information, refer to the “Rinnai I-Series Condensing Boiler Installation Manual” supplied with the boiler, or visit rinnai.us. Vent Connections...
Page 8 Return from CH System Primary-Secondary Heating Kit CH Return CH Pressure Relief Valve (supplied Domestic Hot Water Pressure Relief Valve with boiler) Central Heating Pressure Gauge CH Supply Gas Shut Off Valve Condensate Drain Domestic Hot Water Rinnai I-Series Condensing Boiler Combi Manual...
Page 9 Ignition Unit Heat Exchanger Silencer Pressure Sensor Air Vent PC Board Cover Integrated Pump Control Panel Diverter Valve Flow Sensor PC Board Removed Plate Heat Exchanger Bypass Servo Valve Condensate Trap Water Flow Servo Valve Rinnai I-Series Condensing Boiler Combi Manual...
Page 10 ANSI Z21.13, CSA 4.9, ASME Maximum gas supply pressure must not exceed the value specified by the manufacturer. Rinnai products are continually being updated and improved; therefore, specifications are subject to change without prior notice. Rinnai I-Series Condensing Boiler Combi Manual...
Page 11 Measurements: in. (mm) Vent Connection: 2 in. (51 mm) nominal PVC/Polypropylene or 3 in./5 in. Concentric Rinnai I-Series Condensing Boiler Combi Manual...
Page 12 3/4 in. NPT DWH In (Cold Inlet) 3/4 in. NPT DHW Out (Hot Outlet) 3/4 in. NPT CH In (CH Return) 1 in. NPT CH Out (CH Supply) 1 in. NPT Condensate Outlet 1/2 in. NPT Rinnai I-Series Condensing Boiler Combi Manual...
Page 13 The following optional accessories are available for the Rinnai I-Series Condensing Boiler. CONDENSATE NEUTRALIZER SCALECUTTER Filters and reduces the amount of Neutralizes the condensate scale entering the boiler allowing generated by the boiler. for greater boiler longevity. SCALECUTTER REFILL CARTRIDGE...
Page 14: Components
Training for Rinnai Condensing Boilers is cold water supply line, means shall be accessible online at provided to control thermal expansion.
Page 15 DO NOT use substitute parts that Other Items You May Need are not authorized for this boiler. • Combustion analyzer (intended for DO NOT install the boiler on use with condensing boilers) carpeting. • Hand truck with fastening belt Rinnai I-Series Condensing Boiler Combi Manual...
Page 16 One vent screen is for DOCUMENTATION the intake; the other is for the • exhaust. Installation and Operation Manual (this manual) • User Manual Rinnai I-Series Condensing Boiler Combi Manual...
Page 17 For Domestic Hot Water systems, if you This section provides information on the install the boiler in an area that is known to importance of water quality to the Rinnai have hard water or that causes scale build- Condensing Boiler. The information is...
Page 18 □ The installation must conform with local codes or, in the absence of local codes, with the National Fuel Gas Code, ANSI Z223.1/NFPA 54, or the Natural Gas and Propane Installation Code, CSA B149.1. Rinnai I-Series Condensing Boiler Combi Manual...
Page 19 Steps continued on next page. Use the appropriate screws for the wall construction to secure the mounting bracket to the wall between two studs. Rinnai I-Series Condensing Boiler Combi Manual...
Page 20: Specifications
Pour approximately 10 ounces (1.25 cups) of water directly into the boiler’s exhaust port Bracket (do not remove the 2 in. PVC adapter prior to this). Exhaust Port Bottom Bracket Rinnai I-Series Condensing Boiler Combi Manual...
Page 21: Installation
6 ft (1.83 m) or as per vent with an existing vent or chimney. manufacturer’s instructions or local • DO NOT common vent with the vent code requirements. pipe of any other manufacturer’s boiler or appliance. Rinnai I-Series Condensing Boiler Combi Manual...
Page 22: Venting
• Avoid termination locations near commercial cooking exhaust. • Avoid termination locations near any air inlets. • You must install a vent termination at least 12 in above the ground or anticipated snow level. Rinnai I-Series Condensing Boiler Combi Manual...
Page 23 3. Adjust DIP switch 8 to the ON position. PC Board DIP Switches 4. On the PC Board, press and hold the red button for five seconds Press and Hold Red Button for Five Seconds Rinnai I-Series Condensing Boiler Combi Manual...
Page 24 8. The boiler is now set to allow higher exhaust temperatures. To exit parameter settings and enter normal operation mode, press the Mode button. 9. Replace the boiler’s front panel by reinserting the four screws that secure the panel. Rinnai I-Series Condensing Boiler Combi Manual...
Page 25 Combustion Exhaust Combustion Combustion Option 2 Non-Direct Vent (Room Air) See the Non-Direct Vent section for complete details. Room air is used for combustion while exhaust vents to the outside. Exhaust Combustion Rinnai I-Series Condensing Boiler Combi Manual...
Page 26: Guidelines
2/4 Condensing 45 Degree Diverter Nose (Use with Wall Terminal) 196005, 197040 FGV Concentric Vent Kit (16 in. length) 196105, 197033 FGV Concentric Vent Kit (28 in. length) 196125 FGV Concentric Vent Kit (40 in. length) Rinnai I-Series Condensing Boiler Combi Manual...
Page 27 2 in. x 4 in. Concentric Vertical Termination CVENT-2 2 in. x 4 in. Concentric Horizontal Termination 2ZDCTH24 2 in. x 4 in. Concentric Horizontal Termination 2ZDCTV24 2 in. x 4 in. Concentric Roof Termination Rinnai I-Series Condensing Boiler Combi Manual...
Page 28 PVC/CPVC Concentric Vent Kit 3 in. x 32 in. (PVC)/ 52CVKGVSF9003- 32 (CPVC) 52CVKGVS6503-44 PVC/CPVC Concentric Vent Kit 3 in. x 44 in. (PVC)/ 52CVKGVSF9003- 44 (CPVC) SC03HT Horizontal Termination Adapter SC03VT Vertical Termination Adapter ICRT3539 3''/5'' Concentric Roof Termination PPs-UV Rinnai I-Series Condensing Boiler Combi Manual...
Page 29 3 in. x 5 in. Concentric Vertical Termination CVENT-3 3 in. x 5 in. Concentric Horizontal Termination 2ZDCTH35 3 in. x 5 in. Concentric Horizontal Termination 2ZDCTV35 3 in. x 5 in. Concentric Roof Termination Rinnai I-Series Condensing Boiler Combi Manual...
Page 30 2 in. Black UV Resistant Tee 196984 FGV PVC Low Profile Termination Kit 081216 FGV PVC Wall Termination 52SWVKGVS6502 PVC Side Wall Vent Kits 52WTVKGVS6502 PVC Wall Vent Kits HVENT-2 2 in. Low Profile Horizontal Vent Kit Rinnai I-Series Condensing Boiler Combi Manual...
Page 31 3 in. Black UV Resistant Tee 196985 FGV PVC Low Profile Termination Kit 081219 FGV PVC Wall Termination Kit 52SWVKGVS6503 PVC Side Wall Vent Kits 52WTVKGVS6503 PVC Wall Vent Kits HVENT-3 3 in. Low Profile Horizontal Vent Kit Rinnai I-Series Condensing Boiler Combi Manual...
Page 32 APPROVED VENTING MATERIALS BY MANUFACTURER Manufacturer Vent Material Ubbink PVC (Outer Vent), Polypropylene (Inner Vent) Centrotherm Polypropylene Heat-Fab Metal Metal Fab Metal IPEX PVC/CPVC DuraVent Polypropylene Royal ECCO Manufacturing Polypropylene DiversiTech PVC/CPVC Z-FLEX Polypropylene Rinnai I-Series Condensing Boiler Combi Manual...
Page 33 [2] Permitted only if veranda, porch, deck, or balcony is fully open on a mini- mum of two sides beneath the floor. Rinnai I-Series Condensing Boiler Combi Manual...
Page 34 3 in. X 5 in. 65 ft (20 m) 150 ft (46 m) Vent Lengths: • 45° elbow is equivalent to 3 ft (1 m) • 90° elbow is equivalent to 6 ft (2 m) Rinnai I-Series Condensing Boiler Combi Manual...
Page 35 Install the venting termination according to the diagrams and instructions in this manual. Slope the venting 1/4 in. per foot toward the appliance according to the vent manufacturer’s installation instructions. Dispose of condensate per local codes. Rinnai I-Series Condensing Boiler Combi Manual...
Page 36 65 ft (20 m) 150 ft (46 m) Long Sweep Short Sweep Close Turn • 45° elbow is equivalent to 3 ft (1 m) • 90° elbow is equivalent to 6 ft (2 m) Rinnai I-Series Condensing Boiler Combi Manual...
Page 37 Exhaust Vent Pipe Install the exhaust vent pipe. Ensure it is Supplied screw properly seated. Secure the exhaust vent pipe to the exhaust adapter ring with the supplied screw. Rinnai I-Series Condensing Boiler Combi Manual...
Page 38 Slope horizontal exhaust 1/4 in. per foot towards the boiler. DO NOT slope combustion air pipe towards the boiler. Rinnai cautions against installing the boiler in applications with venting in different CAUTION pressure planes. It is possible to have poor performance with this installation.
Page 39 [2] Permitted only if veranda, porch, deck, or balcony is fully open on a mini- mum of two sides beneath the floor. Rinnai I-Series Condensing Boiler Combi Manual...
Page 40 60 in. between terminals Inside Corner IMPORTANT • Installation of Room Air must use listed Category IV venting. • All terminations (horizontal and/or vertical) must terminate 12 in. above grade or anticipated snow level. Rinnai I-Series Condensing Boiler Combi Manual...
Page 41 Such chemicals can be found in, but not limited to bleach, ammonia, cat litter, aerosol sprays, cleaning solvents, varnish, paint and air fresheners. Do not store these products or similar products in the vicinity of this boiler. Rinnai I-Series Condensing Boiler Combi Manual...
Page 42 75% free area. Under no circumstance should the louver, grill or screen have openings smaller than 1/4 in. Examples: Wood: 10 in. x 12 in. x 0.25 = 30 in. Metal: 10 in. x 12 in. x 0.75 = 90 in. Rinnai I-Series Condensing Boiler Combi Manual...
Page 43 □ Verify that adequate combustion air is available for all appliances installed in the space. □ Installation complies with National Fuel Gas Code, ANSI Z223.1/NFPA 54 as well as local and state regulations therein. Rinnai I-Series Condensing Boiler Combi Manual...
Page 44 Glue elbow to the combustion air PVC vent pipe per manufacturer’s instructions. Install the exhaust vent pipe. Ensure it is Exhaust Vent Pipe properly seated. Secure the exhaust vent pipe to the exhaust Supplied screw adapter ring with the supplied screw. Rinnai I-Series Condensing Boiler Combi Manual...
Page 45 Rinnai cautions against installing the boiler in applications with venting in different CAUTION pressure planes. It is possible to have poor performance with this installation. 2 in. or 3 in. 2 in. or 3 in. Schedule 40 Schedule 40 PVC/CPVC Snorkel...
Page 46: Gas Supply
“6.3 Gas Pipe Sizing Reference Tables.” 7. Perform a leak and pressure test prior to operating the boiler. If a leak is detected, do not operate the boiler until the leak is repaired. Gas Shut Off Valve Rinnai I-Series Condensing Boiler Combi Manual...
Page 47: For Your Safety Read Before Operating
1. Set the temperature controller to the lowest setting. 2. Turn off all electric power to the appliance if service is to be performed. 3. Turn the manual gas control valve located at gas inlet of appliance clockwise to the OFF position. Rinnai I-Series Condensing Boiler Combi Manual...
Page 48: Natural Gas
50 (15) 1000 60 (18) ANSWER: 70 (21) 80 (24) For this example, the pipe 90 (27) diameter must be at least 3/4 in. pipe size and 10 ft (3 m) in 100 (30) length. Rinnai I-Series Condensing Boiler Combi Manual...
Page 49 ANSWER: 60 (18) Total Gas 264,000 Btu/hr Input 80 (24) 100 (30) For this example, the pipe diameter must be at least 1/2 in. nominal pipe size and 10 ft (3 m) in length. Rinnai I-Series Condensing Boiler Combi Manual...
Page 50 DHW Hot • 20 seconds at 130°F (54°C) Outlet • 8 minutes at 120°F (49°C) Connection Children, disabled, or elderly are at Isolation Valve highest risk of being scalded. Feel water before bathing or showering. Rinnai I-Series Condensing Boiler Combi Manual...
Page 51 Confer with local building officials before installation. LEGEND The image below illustrates a suggested arrangement. Some of the fittings are optional. Rinnai I-Series Condensing Boiler Combi Manual...
Page 52 • Some installations with multiple zone valves may require a differential bypass, which will prevent excessively high flow rates through a single zone when the Heating Return Connection other zone valves are closed. Rinnai I-Series Condensing Boiler Combi Manual...
Page 53 Dirt Trap — Protects the boiler from alternately be displayed on the boiler debris in the plumbing system. control panel. A port for an external gauge is present in the Primary-Secondary Heating Kit accessory offered by Rinnai. Rinnai I-Series Condensing Boiler Combi Manual...
Page 54 (if required by local code) Pressure Relief Valve (supplied with boiler) Pressure Gauge Air separator Primary-Secondary Dirt Trap Heating Kit System System Return Supply Backflow preventer Expansion Ball valve Fill valve with tank pressure gauge Rinnai I-Series Condensing Boiler Combi Manual...
Page 55 It is the responsibility of the contractor or engineer to ensure the installation is in accordance with all local building codes. Confer with local building officials before installation. LEGEND This picture illustrates a suggested arrangement. Some of the fittings are optional. Rinnai I-Series Condensing Boiler Combi Manual...
Page 56: Hydraulic Separation
It is the responsibility of the contractor or engineer to ensure the installation is in accordance with all local building codes. Confer with local building officials before installation. LEGEND This picture illustrates a suggested arrangement. Some of the fittings are optional. Rinnai I-Series Condensing Boiler Combi Manual...
Page 57 Rinnai recommends hydraulic separation between the boiler and central heating system. Hydraulic separators allow for no pump curve matching or flow calculation; this is ideal for multi-temperature and multi-zone systems. Examples of Hydraulic Separation Closely spaced tees and low loss headers are common examples of hydraulic separators and can be used to separate the boiler loop from the central heating loop.
Page 58 Not Applicable If the pressure drop of the system exceeds the available pressure, the use of primary/secondary piping is necessary. Rinnai requires the use of primary/secondary piping with the use of this model. Rinnai I-Series Condensing Boiler Combi Manual...
Page 59 • The discharge line from the pressure relief valve should pitch downward and terminate 6 in. (152 mm) above drains where discharge will be clearly visible. Rinnai I-Series Condensing Boiler Combi Manual...
Page 60: Connect The Condensate Drain Line
• A condensate neutralizer kit is available from drain. Rinnai. The kit allows condensate to flow • All condensate must drain and be through neutralizing media that raises the pH of disposed of according to local codes.
Page 61: Condensate Pump Safety Switch Wiring
2. Open the boiler cover and locate two white wires labeled “To Condensate Pump” (the wires may be located behind the PC Board). 3. Cut crimp connectors off white wires and strip the insulation off of the two ends. Rinnai I-Series Condensing Boiler Combi Manual...
Page 62 Power cord must be plugged into power source. Safety switch wires connect to the NO and COM contacts on the safety switch. • NO - Normally Open • NC - Normally Closed • COM - Common (Neutral) Rinnai I-Series Condensing Boiler Combi Manual...
Page 63: Power Supply
If there is more than one − Making wiring connections and/ door to the boiler room, a switch or changes to the wiring should be located at each door. terminals on the boiler. Rinnai I-Series Condensing Boiler Combi Manual...
Page 64 ❻ ❼ PC Board CAUTION • Rinnai recommends the use of spade connectors or similar components for wiring to the screw terminals. • Ensure that the insulation of the wire is not exposed to contact any other components besides the terminal.
Page 65: Commissioning
6. An E430 diagnostic code will be present until the boiler senses at least 13 PSI (90 kPa). 7. Check the heating system for leaks. 8. Begin the deaeration process shown in the next section (“10.3 Deaeration Process”). Rinnai I-Series Condensing Boiler Combi Manual...
Page 66: Deaeration Process
7. Operate the domestic hot water or central heating to ensure the boiler operates properly. 8. Close the air vent on the pump. After approximately one week, all air in the system should be eliminated via the air separator in the piping system. Rinnai I-Series Condensing Boiler Combi Manual...
Page 67 To initiate or end the deaeration process, press and hold the top, left black button on the PC Board (shown below). PC Board DIP Switches Rinnai I-Series Condensing Boiler Combi Manual...
Page 68 This boiler has an integrated condensate trap. Have you verified that an external condensate trap is not   installed?   Have you confirmed the end of the condensate drain pipe is open to atmosphere?   Has an air gap been installed in the condensate drain line? Rinnai I-Series Condensing Boiler Combi Manual...
Page 69 Did you confirm that an extension cord or an adapter plug has NOT been used with the boiler? COMMISSIONING YES NO   Did you prime the pump?   Was the boiler filled to 17-26 PSI?   Was the deaeration process performed on the boiler? Rinnai I-Series Condensing Boiler Combi Manual...
Page 70: Operation
Between 7.3 - 13 PSI, operation will be limited (E430 diagnostic code will be present on the controller display). − The maximum pressure permitted inside the heat exchanger is 45 PSI. − The pressure relief valve supplied with the boiler is rated to 30 PSI. Rinnai I-Series Condensing Boiler Combi Manual...
Page 71 ❿ DHW Button LED Switching Operation ❻ Mode When the LED light above the DHW Press to change the button is illuminated, display between DHW DHW mode is active. and CH for temperature setting. Rinnai I-Series Condensing Boiler Combi Manual...
Page 72 ❸ Central Heating Mode Active ❿ Priority Control ❹ Domestic Hot Water Mode Active ⓫ “In Use” Light (boiler has fired and is ❺ running) Outdoor Thermostat Connected ❻ Freeze Protection Active Rinnai I-Series Condensing Boiler Combi Manual...
Page 73 Press the Select button to confirm the Up and Down arrows until the temperature. the appropriate temperature is This temperature setting is displayed. displayed for a few seconds and then returns to standby mode. Rinnai I-Series Condensing Boiler Combi Manual...
Page 74 Active button appears on the home appropriate temperature is screen. displayed. °F Pri. Press the Select button to confirm the temperature. This temperature setting is displayed for a few seconds and then returns to standby mode. Rinnai I-Series Condensing Boiler Combi Manual...
Page 75 No Icon The Eco icon will illuminate The Eco icon will not illuminate when Eco Mode is active. when Comfort Mode is active. NOTE During DHW recirculation, the Eco icon will always be on. Rinnai I-Series Condensing Boiler Combi Manual...
Page 76: Control Panel
To turn the control panel click sound on or off, follow the steps below. 2: On 2:Off Press the Mode button Press the Select button. 2:on twice. should appear on the display. Press the Up or Down arrows to select ON or OFF. Rinnai I-Series Condensing Boiler Combi Manual...
Page 77 Press the Mode button three Press the Select button. 3:off times. should appear on the display. Press the Up or Down arrows to select: • OFF - Child Lock OFF • LOC - Child Lock ON Rinnai I-Series Condensing Boiler Combi Manual...
Page 78 Domestic Hot Water button performance data (press and hold both buttons number described in The data for the down at the same time). the Performance Data performance number Table in this section. automatically appears in the display. Rinnai I-Series Condensing Boiler Combi Manual...
Page 79 Hours Combustion Cycles x100 Combustion Hours (DHW) x10 Hours Combustion Cycles (DHW) x100 Commissioning Cycles * Refer to the Technical Data Sheet located on the inside front cover of the boiler for additional information. Rinnai I-Series Condensing Boiler Combi Manual...
Page 80: Parameter Settings
PCB. Refer to the instructions included in the replacement parts. Button 4 Parameter Settings Refer to section “12.4 Parameter Settings” (Red Button) Dip Switch Dip Switch Settings Refer to section “12.3.8 PC Board DIP Switches” Rinnai I-Series Condensing Boiler Combi Manual...
Page 81 PVC venting system. If CPVC, PP, or other approved venting is used, this setting may be adjusted. See section “5.4 PVC Venting Safety Switch” for more information. Rinnai I-Series Condensing Boiler Combi Manual...
Page 82 0-2,000 ft (0-610 m) (Default) 2,001-5,400 ft (610-1,646 m) 5,401-7,700 ft (1,646-2,374 m) 7,701-10,200 ft (2,347-3,109 m) IMPORTANT When a DIP switch is adjusted, it is not necessary to adjust the gas pressure setting for high altitude. Rinnai I-Series Condensing Boiler Combi Manual...
Page 83 CH pump 1. For example, when the main Together) pump is on, pump 1 is also on. When DIP switch 2 is in the OFF position, the pumps are automatically linked. Rinnai I-Series Condensing Boiler Combi Manual...
Page 84 (such as 11-A or 11-b). Then, press the Select button. 8. To exit parameter settings and enter normal operation mode, press either the red button on the PC Board or the Mode button on the controller. Rinnai I-Series Condensing Boiler Combi Manual...
Page 85: Outdoor Reset Control
This parameter is available when DIP switch 3 is in the ON position. This sets the DHW Crossover Dedicated recirculation piping mode, which controls the Valve Return circulation logic. Ensure this corresponds to the DHW recirculation piping. Rinnai I-Series Condensing Boiler Combi Manual...
Page 86 LC code will disappear. Adjust DHW Temperature Setting 0°F 1.8°F 3.6°F 5.4°F This setting enables the DHW output (0°C) (1°C) (2°C) (3°C) temperature to be adjusted without adjusting the set point temperature. Rinnai I-Series Condensing Boiler Combi Manual...
Page 87 This setting is for whether stopping the external Pump pump from running to reduce pump operation time or it operates the same as the main pump to enable remaining heat from the heat exchanger to be delivered to the system. Rinnai I-Series Condensing Boiler Combi Manual...
Page 88 PVC: PVC venting system. If CPVC, PP, or other CPVC/PP/ approved venting is used, this may be adjusted. Other See section “5.4 PVC Venting Safety Switch” for more information. Rinnai I-Series Condensing Boiler Combi Manual...
Page 89 The sensor should then be wired back to the outdoor temperature sensor terminal on the boiler. Refer to the following sections for more information. North Facing Wall Outdoor Temperature Sensor Rinnai I-Series Condensing Boiler Combi Manual...
Page 90 140 - 180°F Unit Heater 130 - 140°F 160 - 180°F Base Board Convectors 100 - 140°F 140 - 180°F Cast Iron/Panel Radiator 90 - 120°F 140 - 180°F Undermount Radiant 100 -120°F 120 - 150°F Rinnai I-Series Condensing Boiler Combi Manual...
Page 91 130°F 122°F (54°C) (50°C) 120°F (49°C) 14°F (-10°C) 104°F 110°F (40°C) (43°C) 100°F -20°F -10°F 0°F 10°F 20°F 30°F 40°F 50°F 60°F 70°F (38°C) (-29°C) (-23°C) (-18°C) (-12°C) (-7°C) (-1°C) (4°C) (10°C) (16°C) (21°C) Rinnai I-Series Condensing Boiler Combi Manual...
Page 92 Select Reset Curve To select the desired reset curve, access the parameters (as shown in section “12.4 Parameter Settings”) and select parameter . Then, select the desired curve. Selection Parameter Setting Description Number Outdoor reset curve Rinnai I-Series Condensing Boiler Combi Manual...
Page 93 77°F (25°C). This mode can prevent the boiler from operating under warm conditions unexpectedly. Maximum outdoor temperature is selected by setting parameter number to “77°F (25°C)” or “No Maximum” (see section “12.4 Parameter Settings” for more information). Rinnai I-Series Condensing Boiler Combi Manual...
Page 94 Requires installation of a thermal bypass valve at the furthest fixture in the plumbing system. IMPORTANT Rinnai strongly recommends installing insulation to the hot water and dedicated return lines to decrease the amount of heat loss. Rinnai I-Series Condensing Boiler Combi Manual...
Page 95 This adjusts the 3 Way Valve position to open the CH side more for when Normal Additional CH the flow of the CH side is reduced due to DHW demand. This may restrict the DHW capacity. Rinnai I-Series Condensing Boiler Combi Manual...
Page 96 A minimum flow rate 0.5 GPM (2 L/min) is needed for the boiler to operate correctly (maximum current: 2 Amps). Select the proper pump size based on the crossover valve and DHW system pressure loss. Note: The maximum current permissible to connect to the DHW_Pump connection is 2 Amps. Rinnai I-Series Condensing Boiler Combi Manual...
Page 97 0.4 GPM (1.5 L/min), the DHW recirculation pump will stop and an E631 diagnostic code will display on the controller. The proper pump size needs to be selected for the pressure drop through the recirculation loop (maximum current: 2 Amps). Rinnai I-Series Condensing Boiler Combi Manual...
Page 98: Simultaneous Ch And Dhw Operation
IMPORTANT When selecting simultaneous CH and DHW operation, Rinnai recommends the use of hydraulic separation. In simultaneous operation, the flow rate from the internal pump to the CH system may be reduced. This can cause insufficient heat transfer to the CH system. When selecting simultaneous CH and DHW operation, do not place pumps in series in primary piping.
Page 99 When set for simultaneous operation, domestic hot water could be reduced by up to half depending on the central heating demand. If high domestic hot water flow is desired, it is recommended to not use the simultaneous operation feature. Rinnai I-Series Condensing Boiler Combi Manual...
Page 100: Diagnostic Codes
Bleed all air from the gas lines. • Technical Data Sheet Check the ground wire to the PC Board. • located on inside front Check flame rod voltage to ground during ignition. cover of boiler. Rinnai I-Series Condensing Boiler Combi Manual...
Page 101 • Replace if necessary. • Ensure the condensate reservoir is empty and condensate pump is operational. * See “Electrical Diagnostics” on Technical Data Sheet located on inside front cover of boiler. Rinnai I-Series Condensing Boiler Combi Manual...
Page 102 • Clean the sensor of any scale buildup • Ensure the combustion fan spins freely. present. * See “Electrical Diagnostics” on Technical Data Sheet located on inside front cover of boiler. Rinnai I-Series Condensing Boiler Combi Manual...
Page 103: Maintenance
If there is a demand immediately after Up and Down using DHW, wait at least three minutes for operation. Press the DHW * See “Electrical Diagnostics” on Technical Data button Sheet located on inside front cover of boiler. Rinnai I-Series Condensing Boiler Combi Manual...
Page 104 CH are within limits to handle both simultaneously. Cannot change the DHW set point No Code temperature • When DHW is being produced, the temperature setting can only be adjusted between 98°F and 110°F. Rinnai I-Series Condensing Boiler Combi Manual...
Page 105 5. Press the right-side, black button again. The controller now displays FH (the boiler is now in forced high condition). 6. To enter back into normal operation, press the right-side, black button. The controller now displays normal operation mode. Rinnai I-Series Condensing Boiler Combi Manual...
Page 106: Owner Maintenance
• Check that the pressure on the controller display or external pressure gauge indicates 17 to 26 psi (117 to 180 kPa). Rinnai I-Series Condensing Boiler Combi Manual...
Page 107 Flushing for DHW (plate heat exchanger). When LC code appears, the boiler Heat Exchanger detects lime scale accumulation. Once the flushing done, the LC code will disappear automatically. If the boiler is installed in hard water area, Rinnai recommends periodically flushing. Draining Water...
Page 108: Approved Cleaners, Inhibitors And Antifreezes
Do not open the burner cabinet and touch the burner surface. Condensate Trap Cleaning: • Inspect the condensate drain assembly inside the boiler and your external drain system. • Remove any debris that may be present in the condensate removal system. Rinnai I-Series Condensing Boiler Combi Manual...
Page 109 During freeze protection operation, the pressure and supply temperature will alternately display on the controller. The icon for CH and DHW may alternate depending on the operation of the freeze protection sequence. Rinnai I-Series Condensing Boiler Combi Manual...
Page 110 6. Reconnect the wiring connection to the flame rod. Be careful not to touch the inside of the wiring connection. To reset the error, press the DHW button. The boiler starts up. 7. Replace the boiler front panel. 8. The boiler may now go back into normal operation. Rinnai I-Series Condensing Boiler Combi Manual...
Page 111 If replacing a boiler, add system cleaners while the old boiler is installed and operate the old boiler for heating for several days to most effectively clean the system. • The Rinnai boiler must be closed off (valved off) from the rest of the system, or not connected, while cleaners are in the system. •...
Page 112 4. If the installation is a zone system (utilizes system. multiple zones), flush out each zone individually. The Rinnai boiler must be isolated from the 5. Flush the CH system with water again, system while the system is flushed. No ensuring all zones have been flushed.
Page 113 Failure to flush the boiler will cause damage to the plate heat exchanger. Damage caused by lime build-up is not covered by the boiler’s warranty. Rinnai strongly recommends installation of isolation valves to allow for flushing of the plate heat exchanger.
Page 114: Ch Pressure Drop And Flow Curve
• 14.9 DHW Pressure Drop and Flow Curve Legend: Refer to the legend below for the system applications shown in this section. This picture illustrates a suggested arrangement. Some of the fittings are optional. Rinnai I-Series Condensing Boiler Combi Manual...
Page 115 Optional LWCO Thermostat Purge Station PC Board Wiring for the above application example External pump connection 1 T/T 1 Connection Thermostat Pump Rinnai I-Series Condensing Boiler Combi Manual...
Page 116 PC Board Wiring for the above application example T/T 1 Connection Zone Control Thermostat 1 Thermostat 2 Pump Rinnai I-Series Condensing Boiler Combi Manual...
Page 117 PC Board Wiring for the External pump above application example connection 2 External pump T/T 1 connection 1 Connection T/T 2 Connection Pump 2 Pump 1 Thermostat 1 Thermostat 2 Rinnai I-Series Condensing Boiler Combi Manual...
Page 118 PC Board Wiring for the above application example T/T 1 Connection Pump 1 Pump 2 Pump 3 Wires To End Switch on Zone Controller Zone Control Thermostat 1 Thermostat 2 Thermostat 3 Rinnai I-Series Condensing Boiler Combi Manual...
Page 119 For this application, ensure Parameter 41 is set to “b” for linked operation between the main boiler pump and CH pump 1. PC Board Wiring for the above application example External pump connection 1 Pump Rinnai I-Series Condensing Boiler Combi Manual...
Page 120 The Manufactured Home Construction Phillips Head Screwdriver (field-supplied) and Safety Standard, Title 24 CFR, Part 3280 and/or CAN/CSA Z240 MH Series, Mobile Homes, Series M86 / Manufactured Home Construction and Safety Standard, Title 24 CFR. Rinnai I-Series Condensing Boiler Combi Manual...
Page 121 12. Turn on the power and gas. Inspect for gas leaks. 13. Proceed to the next section (14.5.3 Adjust Parameter Settings). Figure 2 Grooved side of outer gasket MUST face outwards. Inner Orifice Cover Outer Gasket Plate Gasket Rinnai I-Series Condensing Boiler Combi Manual...
Page 122 A0-a • Select for Natural Gas (NG) • Select for Propane (LP) Then, press the Select button. 7. Parameter settings are complete. To enter normal operation mode, press the Mode button. Rinnai I-Series Condensing Boiler Combi Manual...
Page 123 (Figure 4). Figure 4 SATISFACTORY UNSATISFACTORY Front View Front View Flame Flame Blue Flame Yellow or Green Flame 3. Reinstall the boiler front panel using the four screws to secure it. Rinnai I-Series Condensing Boiler Combi Manual...
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Page 125 Rinnai I-Series Condensing Boiler Combi Manual...
Page 126 Water Flow (GPM) Rinnai I-Series Condensing Boiler Combi Manual...
Page 127 Water Flow (GPM) Rinnai I-Series Condensing Boiler Combi Manual...
Page 128 Turn the power off. Do not attempt to connect the temperature controllers with the power on. Although the controller is a low voltage device, there is 120 volt potential next to the temperature controller connections inside the unit. Rinnai I-Series Condensing Boiler Combi Manual...
Page 129 Connect the controller cable to the mating terminal at the bottom of the PC Board. • Use the connecter (included) for wiring to remote controller. • Wire the connecter and remote controller, and insert the connecter on remote controller. Rinnai I-Series Condensing Boiler Combi Manual...
Page 130 Chapter 13 of the National Fuel Gas Code, ANSI Z223.1/NFPA 54, and/or the Natural Gas and Propane Installation Code, CAN/CSA B149.1. Rinnai I-Series Condensing Boiler Combi Manual...
Page 131 4. INSPECTION. The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not approve the installation unless, upon inspection, the inspector observes carbon monoxide detectors and signage installed in accordance with the provisions of 248 CMR 5.08(2)(a)1 through 4. Rinnai I-Series Condensing Boiler Combi Manual...
Page 132: Warranty
Rinnai’s sole discretion. The warranty claim for product parts and labor may be denied if a component or product returned to Rinnai is found to be free of defects in material or workmanship; damaged by improper installation, use or operation;...
Page 133 Rinnai warranty will not be valid. 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.
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This manual is also suitable for:

I060c I120c I090c Reb-a1847ff-us Reb-a2647ff-us Reb-a3558ff-us

Rinnai I Series Installation And Operation Manual

2 Safety

3 About the Boiler

Venting

Gas Supply

7 DHW System Piping

8 CH System Piping

Power Supply

Commissioning

12 Operation

Maintenance