CONDENSING TANKLESS GAS WATER HEATER Installation Manual Models NRCP1112-DV / NRCP982-DV (Eco TOUGH) • Natural Gas(NG) / Liquid Propane Gas (LP) Thank you for purchasing this Noritz Tankless Gas Water Heater. Before using, please: Read this guide completely for operation instructions. Completely fill out the warranty registration card (included separately) and mail the detachable portion to Noritz America Corporation.
Chapter 1 Chapter 2 Chapter 3 Chapter 4 Product Accessories Product Specifications Safety Requirements Installation 1-1 Included Accessories 3 1-2 Optional Accessories 3 2-1 Specifications 4 2-2 Dimensions & Connections 5 3-1 Safety Precautions 6 3-2 Before Installation 7 3-3 Choosing Installation Site 8 3-4 High Elevation Installations 9 3-5 Installation Clearance 10 4-1 Securing to the wall 13 4-2 Vent Pipe Installation 14 4-3 Gas Piping 20 4-4 Water Piping 23 4-5 Condensate
Chapter 1. – Product Accessories The following accessories are included with the unit. Check for any missing 1-1. Included Accessories items before starting installation.
Specifications Chapter 2. – Product Specifications Specifications may be changed without prior notice.The capacity may differ slightly, 2-1. Specifications depending on the water pressure, water supply, piping conditions, and water temperature. Model Name NRCP1112-DV NRCP982-DV MAX 199,000 Btu/h 180,000 Btu/h MIN 18,000 Btu/h 18,000 Btu/h High Altitude (2,500~4,500ft) 180,000 Btu/h 180,000 Btu/h 35°F Rise 11.1 Gal 10.1 Gal 45°F Rise 8.7 Gal 7.8 Gal 77°F Rise 5.1 Gal 4.
Dimensions & Connections Chapter 2. – Product Specifications 4.0" [101mm] 2-2. Dimensions & Connections 11.5" [292mm] 4.6" [117mm] 28.7" [730mm] 6.1" [156mm] 5.6" [142mm] 2.4" [60mm] 2.6" [67mm] 3.2" [81mm] 6.8" [173mm] 9.8" [250mm] 13.
Chapter 3. – Safety Requirements Safety Precautions 3-1. Safety Precautions WARNING To avoid product damage, personal injury, or even possible death, carefully read, understand, and follow all the instructions in the Installation and Owner’s Guide before installation, operation and service the Water Heater. Noritz cannot anticipate every circumstance that might involve a potential hazard. Therefore, all possible incidents are not included in our warnings.
Chapter 3. – Safety Requirements Before Installation 3-2. Before Installation DANGER Check the fixing brackets and vent pipe yearly for damage or wear. Replace if necessary. WARNING Precautions on Vent Pipe Replacement The vent system will almost certainly need to be replaced when this appliance is being installed. Only use vent materials that are specified in this Installation Manual for use on this appliance. Refer to the “Vent Pipe Installation” section for details.
Chapter 3. – Safety Requirements Choosing Installation Site 3-3. Choosing Installation Site Locate the appliance in an area where leakage from the unit or connections will not result in damage to the area adjacent to the appliance or to the lower floors of the structure. When such locations cannot be avoided, it is required that a suitable drain pan, adequately drained, be installed under the appliance. The pan must not restrict combustion air flow.
Chapter 3. – Safety Requirements Choosing Installation Site CAUTION Avoid installation above gas ranges or stoves. Avoid installation between the kitchen fan and stove. If oily fumes or a large amount of steam are present in the installation location, take measures to prevent the fumes and steam from entering in the equipment. Install in a location where the exhaust gas flow will not be affected by fans or range hoods. Take care that noise and exhaust gas will not affect neighbors.
Installation Clearances Chapter 3. – Safety Requirements 3-5. Installation Clearances WARNING Before installing, check for the following: Install in accordance with relevant building and mechanical codes, as well as any local, state or national regulations, or in the absence of local and state codes, to the National Fuel Gas Code ANSI Z223.1/ NFPA 54 – latest edition. In Canada, see NSCNGPIC for detailed requirements.
Installation Clearances Chapter 3.
Installation Clearances Chapter 3.
Chapter 4. – Installation Securing to the wall 4-1. Securing to the wall WARNING CLEARANCES FOR SERVICE ACCESS The water heater must be installed on a wall that can bear its weight. If you try to install the heater on a wall which cannot support its weight, please reconsider. The Water heater can be installed on any suitable internal wall (suitable sound proofing may be required when installing onto a stud partition wall).
Chapter 4. – Installation Vent Pipe Installation 4-2. Vent Pipe Installation (Indoor Installation Only) General Requirements • Under normal conditions, this appliance will not produce an exhaust flue temperature in excess of 149°F (65°C) and schedule 40 PVC pipe may be used as the vent material. If the water heater set temperature is 160°F (70°C) or higher and there is a return line to the water heater from either a recirculation pump, schedule 40 CPVC must be used.
Chapter 4. – Installation Vent Pipe Installation Maximum Vent Length The unit can be adjusted to accommodate longer vent runs; refer to the below table to find the maximum vent length based on the number of elbows. Allowable Schedule 40 Vent Lengths (PVC, CPVC, PP) Pipe diameter No of Elbows 3" (75mm) 2" (50mm) Max. straight Vent Length* 6 70´ N/A 5 75´ N/A 4 80´ 18´ 3 85´ 26´ 2 90´ 34´ 1 95´ 42´ 0 100´ 50´ • 5 feet (1.5M) for each additional 3-inch 90-degree elbow • 2.5 feet (0.
Vent Pipe Installation Chapter 4. – Installation Vent Pipe Installation (DV-Direct Vent) Insert Bird Screen* in End of 90 Elbow Horizontal Vent Termination- PVC/CPVC Materials Only • As illustrated on the right, make sure to keep a distance of 3' (0.9m) or wider between the intake and exhaust when installing the vent piping. * If 3' (0.9m) remote distance between Intake and Exhaust cannot be ensured, the installation can be carried out only in the installation method shown in page 18.
Vent Pipe Installation Chapter 4. – Installation Vent Pipe Installation (DV-Direct Vent) Concentric PVC/CPVC Termination • The concentric termination may be shortened, but not lengthened from its original factory supplied length. • 2" (50mm) & 3" (75mm) PVC or CPVC pipe may be used with the concentric termination. Reducers will be needed to connect 2" pipe. Maintain the same vent pipe diameter from the water heater flue to the termination.
Vent Pipe Installation Chapter 4. – Installation Vent Pipe Installation (DV-Direct Vent) Horizontal Vent Termination- PVC/CPVC Materials Only * When 3' (0.9m) remote distance between Intake and Exhaust cannot be ensured. * Can not use Hood termination (PVT-HL) • Intake and exhaust should face the same direction. Intake and exhaust should stay within the same pressure zone. • Insert the bird screen. 90° elbow vertical setting (downward). • Ensure at least 3ft (0.
Vent Pipe Installation Chapter 4. – Installation Vent Pipe Installation (SV-Non Direct Vent) * When supplying combustion air from the indoors (SV-CK-3 Conversion Kit is required) Horizontal Vent Termination- PVC/CPVC Materials Only 3" Min • A tee, the PVT-HL termination may be used for the vent Exhaust termination. It is not necessary to use bird screens with the PVTHL termination. • Terminate at least 12" (300mm) above grade or above snow line. • Terminate at least 7' (2.
Chapter 4. – Installation Gas Piping order to choose the proper size for the gas line, consult local codes or the National Fuel Gas 4-3. Gas Piping InCode ANSI Z223.1. CAUTION The guidelines and examples we have provided in this manual section are for reference only. The sizing and installation of the gas system for this water heater, as with any gas appliance, is the sole responsibility of the installer.
Gas Piping Chapter 4. – Installation CAUTION Pressure Test The appliance and its gas connections must be leak tested before placing the appliance in operation. The appliance must be isolated from the gas supply piping system by closing its individual manual shutoff valve during any pressure testing of the gas supply piping system at test pressures equal to or less than ½ psig (3.5 kPa). We do not recommend pressure testing in excess of ½ psig (3.5kPa).
Gas Supply Piping Chapter 4. – Installation Gas Line Sizing for a Noritz Condensing Tankless Gas Water Heater Table 1. For Less than 8" WC initial supply pressure Maximum Natural Gas Delivery Capacity (0.
Chapter 4. – Installation Water Piping Installation must be performed by a qualified plumber. In the Commonwealth of Massachusetts, this 4-4. Water Piping product must be installed by a licensed plumber or gas fitter in accordance with the Massachusetts Plumbing and Fuel Gas Code 248 CMR Sections 2.00 and 5.00. Observe all applicable codes. This appliance is suitable for combination potable water and space heating applications. It cannot be used for space heating applications only.
Water Piping Chapter 4. – Installation Supply water piping Hot water piping • Do not use PVC, iron, or any piping which has been treated with • Do not use lead, PVC, iron or any piping which has been treated with chromates, boiler seal or other chemicals. • Mount a check valve and a shut off valve (near the inlet). • In order for the client to use the water heater comfortably, 98.1 to 491 kPa (14 to 70 PSI) of pressure is needed from the water supply. Be sure to check the water pressure.
Condensate Piping Chapter 4. – Installation 4-5. Condensate Piping CAUTION Due to the acidic nature of the condensate, be sure to properly drain and if necessary, treat the condensate prior to disposal. Damage caused by improperly handled condensate is not covered by the warranty. • This water heater is a high efficiency, fully condensing appliance which produces acidic condensate during operation.
Chapter 4. – Installation Plumbing Guidelines 4-6. Plumbing Applications Select Water Heater Mode Inst.
Chapter 4. – Installation Plumbing Guidelines 2. External Recirculation mode The recirculation pipe must be installed in the field in order to apply the ‘External Recirculation Mode’. This mode allows the water heater recirculation pipes to be warmed up and serving as the freeze protection function.
Chapter 4. – Installation Plumbing Guidelines 3.Internal Recirculation mode This mode is available without a recirculation pipe installed. The water heater is preheated and protected form freezing.
Chapter 4. – Installation Pressure Relief Valve Pressure Relief Valve • External pressure relief valve must be installed. Observe the following. Failure to comply with the guidelines on installing the pressure relief valve and discharge piping can result in personal injury, death or substantial property damage. • DO NOT install a relief valve with pressure higher than 150psi. This is the maximum allowable relief valve setting for the water heater. • Approved ‘Pressure Relief Valve’ should be applied.
Electrical Wiring Chapter 4. – Installation 4-7. Electrical Wiring Do not connect electrical power to the unit until all electrical wiring has been completed. Do not connect electrical power to the unit until all electrical wiring has been completed. This appliance must be electrically grounded in accordance with local codes, or in the absence of local codes, with the National Electrical Code, ANSI/NFPA 70. In Canada, the latest CSA C22.1 Electrical Code.
Setting the Control Panel Chapter 4. – Installation 4-10. Setting the Control Panel. (Recirculation mode) ►To use the ‘Recirculation Timer Mode’, the device’s internal clock should be adjusted to the current time. Clock settings can be set in the ‘User mode’. [ To enter ‘User Mode’ ] Power on the control panel must be on. Press and hold ‘Function Button’ for approximately 5 Seconds to enter ‘User mode’. ‘[A:GA]’ is displayed on the display screen. From here, turn the ‘Dial Button’ to start the setting.
Setting the Control Panel Chapter 4. – Installation 3. Setting day : 25 Set the ‘day’ by turning the dial button. (Only the flashing number can be changed.) Press the dial button to store the setting. 4. Setting day of the week: Friday Set the ‘day of the week’ by turning the dial button. (Only the flashing number can be changed.) Press the dial button to store the setting. 5. Setting hour : 10 Set the ‘hour’ by turning the dial button. (Only the flashing number can be changed.
Chapter 4. – Installation Setting the Control Panel Setting the Control Panel. (Recirculation mode) To set the recirculation type (External or Internal mode) 1. Turn off the power to the control panel. Press and hold the ‘Function Button’ for approximately 5 seconds to get into the ‘Installer mode’. 2. Turn the dial button in ‘Installer mode’ to ‘[1:RC]’. 3. ‘oFF’ character is flashed when the dial button is pressed. (Default setting is ‘oFF’ and recirculation function is turned off.) 4.
Chapter 5. – Installation Check 5-1. Maintenance Maintenance Periodically check the following to ensure proper operation of the water heater.. •The venting system must be examined periodically by a qualified service technician to check for any leaks or corrosion. • The burner flame must be checked periodically for a proper blue color and consistency. • If the flame does not appear normal, the burner may need to be cleaned.
Maintenance Report Chapter 5. – Installation Check MAINTENANCE REPORT CAUTION In unusually dirty or dusty conditions, care must be taken to keep water heater cabinet door in place at all times. Failure to do so VOIDS WARRANTY! WARNING Allowing the water heater to operate with a dirty combustion chamber will hurt operation. Failure to clean the heat exchanger as needed by the installation location could result in water heater failure, property damage, personal injury, or death.
Chapter 5. – Installation Check Final check list 5-2. Final Check List Final check : On the installation conditions.
Memo 37
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Installation Manual NORITZ AMERICA CO.
