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WARNING: If the information in this manual is not followed exactly, a fire or
explosion may result causing property damage, personal injury or death.
- 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.
CERTIFIED
R
Low NOx
Approved by
SCAQMD
SAR8157w
Rev. 10/05
Owner's Guide and
Thank you for purchasing this Noritz Gas Water Heater. Before using, please:
Read this manual completely for correct installation and operation instructions.
Completely fill out the warranty registration card (included separately) and
mail the detachable portion to Noritz America Corporation.
Keep this manual (and the remainder of the warranty registration card) where it
can be found whenever necessary.
NORITZ America Corporation
Installation Manual
Model N-084M-DV
*SAR8157 T*

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  • Page 1 - Installation and service must be performed by a qualified installer, service agency or the gas supplier. Thank you for purchasing this Noritz Gas Water Heater. Before using, please: Read this manual completely for correct installation and operation instructions. Completely fill out the warranty registration card (included separately) and CERTIFIED mail the detachable portion to Noritz America Corporation.
  • Page 2: Table Of Contents

    Contents Contents ......................2 Owner's Guide Important Safety Information ............... 3 General Parts Main Unit ....................8 Remote Controller ..................9 Initial Operation ................... 11 Setting and Using the Water Heater ............12 Flow Meter Alarm ..................14 Muting the Remote Controller ..............16 Preventing Damage from Freezing ............
  • Page 3: Important Safety Information

    Important Safety Information-1 To prevent damage to property and injury to the user, the icons shown below will be used to warn of varying levels of danger. Every indication is critical to the safe operation of the water heater and must be understood and observed.
  • Page 4 1. Turn off the hot water supply 2. Turn off the power to the water heater 3. Turn off gas and water at the main 4. Consult the nearest Noritz agent For Natural Gas Check the temperature of the running hot water before entering the shower.
  • Page 5 Warning Do not place combustibles such as Leave the proper clearance between laundry, newspapers, oils etc. near the water heater and nearby objects the heater or the exhaust vent (trees, timber, boxes with flammable terminal. materials etc.). Sug.3"from Upper: vent pipe* Vent terminal Min.
  • Page 6 Important Safety Information Caution Be sure to electrically ground the Do not touch the exhaust vent pipe unit. during or immediately after opera- tion of the water heater. Do not touch the power cord with wet hands. Keep power cord free of dust. Do not use hair spray or spray detergent in the vicinity of the heater.
  • Page 7 4500 ft. above sea level. If it is snowing, check the exhaust gas vent For installations at higher elevations, con- and exhaust vent terminal for blockage. tact Noritz America for instructions. Do not use parts other than those specified for this equipment.
  • Page 8: General Parts

    General Parts Main Unit Indoor Wall Mounted, Power Vented Model Flue Collar Intake pipe Front Cover Water Drain Valve (with Water Filter) (Inside Water Inlet) p.20) Pressure Relief Valve Water Supply Valve Gas Supply Valve * The above illustration shows an example of installation. The exact installation configuration may be slightly different.
  • Page 9: Remote Controller

    Remote Controller (RC-7646M-2) Display Setting Buttons next page) For setting the hot water temperature, the flow meter alarm, and other settings. Power On/Off Button For turning the heater on and off. Flow Meter Alarm Set Button For setting the flow meter alarm.
  • Page 10 Display The illustration below shows the remote controller display. What is actually displayed depends on how the water heater is set. Burner On Indicator Temperature Setting Priority Indicator (Ex.: 110°F) When this indicator is lit, the hot water Flow Meter Setting temperature can be The display will flash set.
  • Page 11: Initial Operation

    Initial Operation Before the first use of your water heater, make the following preparations. 1 through 4 Follow steps Open the water supply valve. OPEN CLOSED Open a hot water fixture to confirm that water is available, and then close the fixture again.
  • Page 12: Setting And Using The Water Heater

    How to Use Setting and Using the Water Heater (Starting with the Power Off) Press the Power On/Off Button. The temperature will be displayed on the remote control thermostat. Previous set temperature (Ex.: 110°F) Caution To prevent scalding: High Temperature Temperatures above 125 °F can scald.
  • Page 13: Set Temperature

    Set temperature. Turn off the hot Turn on hot Always check the water. water. temperature setting before use. Cold Check the indicator lights. Water temperature °F : The temperature settings below are examples. The temperature setting If fixtures incorporate mixing necessary depends on the usage, the length of piping and the time of year.
  • Page 14: Flow Meter Alarm

    How to Use Flow Meter Alarm (Starting with the power off) Set temperature. Press the Power Preparation Always check On/Off Button temperature setting before use. 1. Plug the bath drain. Cold The temperature will be displayed on the remote control thermostat. Check the indicator lights.
  • Page 15 Water Temperature An alarm will sound for ten seconds when the flow The temperatures settings below are only examples. The °F : temperature setting necessary will depend on the usage, reaches the set level. the length of piping and the time of year. Warm Warmer The water will continue to run unless it is...
  • Page 16: How To Use

    How to Use Muting the Remote Controller The remote controller will emit a sound when any button is pushed. This sound can be muted if it is desired. * Initial factory setting is with sound. With the remote controller off, hold the Power On/Off Button for five seconds.
  • Page 17: Preventing Damage From Freezing

    * The freeze prevention heaters will not prevent the plumbing external to the unit from freezing. Protect this plumbing with insulation, heat tape or electric heaters, solenoids, or pipe covers. If there remains a freezing danger, contact the nearest Noritz agent. Take the measures below for extremely cold temperatures*.
  • Page 18 Preventing Damage from Freezing If the water heater will not be used for a long period of time, Drain the water. Drain the water as follows: Caution To avoid burns, wait until the equipment cools down before draining the water. The appliance will remain hot after it is turned off.
  • Page 19: Regular Maintenance

    Regular Maintenance-1 Periodic Inspection Caution To avoid burns, wait until the equipment cools down before draining the water. The appliance will remain hot after it is turned off. High Temperature For dust and soot in For laundry, newspaper, timber, Check Check the flue terminal.
  • Page 20 Periodic Maintenance Water Drain Valve (with Water Filter) If the water drain valve (with water filter) is covered with debris, the hot water may not run smoothly, or the unit may put out cold water. Check and clean the filter as explained below. * To avoid burns, wait until the equipment cools down before draining the water.
  • Page 21: Troubleshooting

    Troubleshooting-1 Initial Operation • Is water running? Unit does not attempt to ignite when water is running. • Check for reversed plumbing or crossed pipes. • Check the water drain valve filter. ( p.20 ) Unit attempts to ignite but fails •...
  • Page 22: Amount Of Hot Water

    Troubleshooting-2 Temperature • Are the gas and water supply valves fully open? The water is not hot enough. • Is the water temperature setting appropriate? p.12 and p.13) • If the amount of hot water required is very high, it is possible for the temperature to be lower than the temp- erature set on the remote controller.
  • Page 23: Remote Controller

    Remote Controller • Has there been a power failure? The light on the power button does not come on. • Is the power connected properly? The water temperature changes • The temperature setting and the flow meter alarm setting after a power failure or when the may both need to be reset after a power outage.
  • Page 24 Abnormal combustion, Have a professional check the gas supply pressure. low gas supply pressure Contact the nearest Noritz agent. Abnormal combustion Contact the nearest Noritz agent. Contact our sales agent if: • Any other error code appears.
  • Page 25: Follow-Up Service

    For repairs after the warranty period, there will be a charge on any service, and service will only be performed if the unit is deemed repairable. Period of Time for Stocking Repair Parts Noritz will stock repair and maintenance parts for this unit for a minimum of seven years after production has ceased. Reinstallation If you want to reinstall the appliance at a different location, confirm that the gas and power supply indicated on the rating plate are available at the new location.
  • Page 26: Specifications

    • Specifications may be changed without prior notice. Specifications • The capacity may differ slightly, depending on the water pressure, water supply, piping conditions, and water temperature. Specifications Item Specification Model Name N-084M-DV Type Indoor Wall Hanging Installation Direct Vent/Sealed Combustion Air Supply/Exhaust Ignition Direct Ignition...
  • Page 27: External Outfitting

    External outfitting...
  • Page 28 External outfitting Part Nos. Part Names Order Nos. Q'ty/unit N-084M-DV Front set-AS SBX7485 Front packing L AAPL017 Lamp seal plate DECK008 Connection diagram label EJMK001 Caution label 1 EAUK003 Caution label 2 EAUK004 Plug insulation sheet CRUK002 Exhause box FF CZVF001 Heat insurator CZV CZVL002...
  • Page 29: Combustion Unit And Gas Route

    Combustion unit and gas route...
  • Page 30 Combustion unit and gas route Part Nos. Part Names Order Nos. Q'ty/unit Combustion tube set EAC SET-V SBP7302 Flame rod DLK SET-V SBA7506 Plug packing(for N) DLKL012 Ignition plug SET-V SBA7504 Burner sensor DLK SET-V SBA7505 Plug fixing plate(for N) DLKC009 Suction air joint packing DHNL002...
  • Page 31: Hot-Water Feed Route

    Hot-water feed route (Thermal fuse rounding procedure) (Front side view) (Right side view) (Rear side view) (Left side view) 402 Thermal fuse fastener 402 Thermal fuse fastener Heater fastener Freeze preventive heater Thermal fuse Thermal fuse fastener...
  • Page 32 Hot-water feed route Part Nos. Part Names Order Nos. Q'ty/unit Heat exchanger EJM SET-AS SKA7139 Thermal fuse DHN SET-V SBA7398 Thermal fuse fastener CXDH003 Thermal fuse cover DHNA014 Freeze preventive heater CRP SET-V SAQ7745 Heater fastener EHKH001 Remaining flame safety device 96 EHUH001 Water flow servo set 2 DZT DZTD011...
  • Page 33: Electronic Control Unit

    Electronic control unit Remote controller kitchen remote controller (RC-7646M-2-USA) Attached set <Special part> Special part Special part no. instruction manual...
  • Page 34: Electronic Control Unit, Remote Controller And Attached Set

    Electronic control unit, Remote controller and Attached set Part Nos. Part Names Order Nos. Q'ty/unit Relay case EJM-A SET-AS SHA7682 Harness EJMJ002 Lamp cable conduit CRPJ014 Current leakage safety device DTJ DTJJ015 Relay case cover DEKA014 Transformer EDNJ006 Transformer cover DJPA054 Mounting plate for terminal block DZTA006...
  • Page 35: Installation Manual

    Installation Manual NORITZ AMERICA CORPORATION GAS WATER HEATER N-084M-DV (Indoor Installation) WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury or death. Potential dangers from accidents during installation and use are divided into the following three categories.
  • Page 36: Included Accessories

    The following accessories are included with the unit. Included Accessories Check for any missing items before starting installation. Part Shape Part Shape Q’ty Q’ty Installation Manual Tapping Screw (this document) Remote Controller Remote Controller (See p. 51) Cord (10 ft) The accessories listed below are not Optional Accessories included with the units, but may be necessary...
  • Page 37: Quick Connect Multi System Installation

    Quick Connect Multi System Installation • The Quick Connect Multi System allows the installation of two units together utilizing only the Quick Connect Cord. The Quick Connect Cord is 6 ft. long. Install the two units 18.5"-37.4" apart at the center to ensure the cord will be able to reach between the units.
  • Page 38: Before Installation

    Before Installation Warning Precautions on Vent Pipe Replacement • The vent system will almost certainly need to be replaced when this appliance is being installed. Use vent pipe that is listed to UL 1738 for Category III appliances for the exhaust venting. Category III listed vent pipe is suggested for the air supply pipe also, but other materials may be acceptable.
  • Page 39: Choosing Installation Site

    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 recommended that a suitable drain pan, adequately drained, be installed under the appliance.
  • Page 40: Installation Clearances

    Installation Clearances Caution Before installing, check for the following: Install in accordance with relevant building and mechanical codes, as well as any local, state or national regulations. Item Check Illustration • Maintain the following clearances from both combustible and non-combustible materials. 12"...
  • Page 41 Clearance Requirements from Vent Terminations to Building Openings * All clearance requirements are in accordance with ANSI Z21.10.3a-2003 and the National Fuel Gas Code, ANSI Z223.1. Vent Terminal Area Where Terminal is Not Permitted Air Supply Inlet Indoor Installation Outdoor Installation Clearance (See p.42) (See p.42)
  • Page 42: Installation

    Installation Securing to the wall • The weight of the device will be applied to the wall. If the strength of the wall is not suffi- cient, reinforcement must be done to prevent the transfer of vibration. • Do not drop or apply unnecessary force to the device when installing. Internal parts may be damaged and may become highly dangerous.
  • Page 43 Vertical position not allowed. Vent system installation example Vent terminal models • Use only the following models of Noritz Vent terminal vent terminals with this unit. Elbows Straight pipe •...
  • Page 44 Manufacturer and Enclosed Unenclosed Manufacturer and Part No. Product Product Hor. Vert. Hor. Vert. 10" (sides) Protech FasNSeal FSAA4 Noritz N-Vent 4" 3" 3" 15"(top) 6"(bottom) 8" (sides) HeatFab SafTVent 9401RYPK Protech FasNSeal 4" 3"...
  • Page 45 Vertical Vent Termination Exhaust 1-2' RainCap • Terminate at least 6' from the Intake Air combustion air intake of any Min. appliance, and 3' from any other building opening, gas Roof Flashing utility meter, service regulator etc. • Enclose exterior vent systems below the roof line to limit Firestop/ Support...
  • Page 46: Gas Piping

    1/8" NPT screw with an allen wrench and connecting the appropriate pressure gauge. Instructions Sample Gas Line 1. Size each outlet branch starting from the furthest Noritz N-084M-DV using the Btuh required and the length from the Barbecue (236,000 Btuh) meter. (50,000 Btuh) Outlet E 2.
  • Page 47 Gas Line Sizing for a Noritz N-084M-DV Adapted from UPC 1997 Maximum Natur Natural Gas Delivery Capacity in Cubic Feet per Hour (0.60 Specific Gravity, 0.5" WC Pressure Drop) Length in Feet Pipe Size 100' 125' 1/2" 3/4" 1" 1 1/4"...
  • Page 48: Water Piping

    Water Piping Ask a qualified plumber to perform the installation of the plumbing. Observe all applicable codes. This appliance is suitable for potable water and space heating applications. Do not use this appliance if any part has been underwater. Immediately call a qualified service technician to inspect the appliance and replace any part of the control system and gas control which has been under water.
  • Page 49: Plumbing Applications

    Temp. & Applications: Expansion Please contact Press. Gauge Tank (Optional) Noritz for (Install According compatibility. to Local Codes) Drain Shutoff Hot Water * Size the pump to provide at least 2 GPM through the system at 10 Ft of Head plus...
  • Page 50: Electrical Wiring

    Consult qualified electrician Electrical Wiring for the electrical work. 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.
  • Page 51 Remote Controller • Applicable Model N-084M-DV Remote controller RC-7646M-2 Install the remote controller according to the instructions in the Installation Guide (p. 61). • The N-084M-DV can be programmed so that it will default to one of four temperatures if the remote controller is removed (180, 140, 130, 120°F).
  • Page 52 Connecting Remote Controller Cord to Unit • Keep the remote controller cord away from the freeze prevention heaters in the unit. • Tie the redundant cord outside the water heater. Do not put the extra length inside the equipment. • The remote controller cord can be extended up to 300' with 18AWG wire. •...
  • Page 53: Pump Wiring

    * This feature is not available when using Pump Wiring the Quick Connect Multi System feature. Connecting the pump control wire 1. Leave enough slack so that the pump control wires Pump Control PUMP will stay connected if the unit is removed from the Wire Tag wall.
  • Page 54: Maintenance

    Periodically check the following to ensure proper Maintenance 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. •...
  • Page 55: Lighting Instructions

    Caution Handling after trial operation • If the unit will not be used immediately, close off all gas and water shutoff valves, drain all of the water out of the unit and the plumbing system to prevent the unit and system from freezing, and bleed the gas out of the gas line.
  • Page 56 WIRING DIAGRAM (MODEL : N-084M-DV) HEAT EXCHANGER (VCC) THERMAL FUSE FLOW CONTROL VALVE (VCC) (Fully open) THERMAL FUSE (GND) Other Unit in Quick Connect Multi System MAIN CIRCUIT BURNER THRMISTOR BOARD <CN59> <CN75> (VCC) BYPASS FLOW (VCC) Manifold Gas Pressure (Fully open) Increase Button (GND)
  • Page 57: Multi-System

    For Quick Connect Multi System Installation Connecting Quick Connect Cord use a Quick Connect Cord (Sold Separately). Caution The wire coloring on the Quick Connect Cord will 1.Red 1.Red 1.White 1.Red 2.Black 2.Black 2.Green 2.Black 3.White 3.White 3.Red 3.White not be the same as the wire coloring from the 4.Green 4.Green 4.Black...
  • Page 58 B-1. Example of Recirculation with a Multi-System This system will make hot water more quickly available to remote fixtures. The pump will circulate water through the loop until the entire loop is warm, and then the system controller will turn off the pump until the loop cools down.
  • Page 59 B-2. Example of Installation with a Storage Tank and Recirculation System The pump will push water through the Multi-System to heat up the tank. When the return temperature is high, the flow within the device will be limited to 1.3 GPM*.
  • Page 60 Multi-System Wiring (Use SC-201-6 M) Unit 1 Disconnect this   Connector * Connect these to the remote control terminal block in each unit Remote control   terminal block System select connectors Remote Controller Cord Remote   Controller   Unit 2 * The remote controller terminal location may differ depending Disconnect this   Connector on the unit. Remote Control  ...
  • Page 61: Remote Controller Installation Guide

    For Installers: Read this installation guide Remote Controller RC-7646M-2 carefully before carrying out installation. Installation Guide NORITZ AMERICA CORPORATION Note Do not connect power to the water heater before the remote controller has been properly installed. Included Parts List Connecting Wire...
  • Page 62 Installation 3. Remove the cover of the remote control, 1. Apply Wall Packing to the rear side of the mark the location of the screw holes, and remote controller. drill holes for the wall anchors. 2. Connect the remote controller wires to the 4.
  • Page 63: Model Numbers

    Vent Terminal Installation Manual Vent Terminal VT4-TL-5 VT4-TL-8 Model Numbers: VT4-TL-14 VT4-TL-27 Icons warning of risk level: Denotes content that may result in personal injury or Prohibited WARNING property damage if ignored. This symbol warns of hazards which have the immediate poten- Be sure CAUTION tial to result in severe or lethal personal injury or fire.
  • Page 64: Before Installation

    Before Installation Caution Compatibility Check • Make sure that the vent terminal is compatible with the product it will be installed with. If an improper terminal is used, a fire hazard will be created. Choosing Installation Site • Maintain the proper clearances to combustibles The heat and moisture from the water heater may cause corrosion of aluminum materials.
  • Page 65: Installation Requirements

    Installation Requirements Caution Vent Terminal Clearance Requirements Vent terminal installation precautions Note the following vent terminal installation Clearances from obstacles Clearances from combustibles requirements. 1) Do not install the vent terminal indoors Vent terminal Vent terminal Clearances from combustibles 2) Install the vent terminal with a downward slope sloping 12"...
  • Page 66 * When drilling, take care not to damage electric Vent Terminal Installation Procedure wiring, or gas or water piping in walls. 1) Determine the vent terminal installation Before installing the sleeve, adjust its length to fit the location and make a 6.3" diameter hole. wall thickness.
  • Page 67 3) Adjusting the vent terminal length Make sure the vent terminal has been set to the appropriate length and the outlet is oriented properly to prevent combustion and operation problems. Note: If the vent terminal will be installed in The length of the vent terminal must be orientations (2) or (3) from the table on the adjusted to fit with the wall thickness before previous page, the outlet cylinder will have...
  • Page 68 5) Connect the heater and vent terminal using 4" diameter supply and exhaust pipes. Vent terminal Intake pipe Make sure the connections are secure and take measures to prevent exhaust gas from leaking. Use Category III listed vent pipe approved to UL 1738. Seal any connections that are not gas Exhaust pipe tight using a high temperature silicone...
  • Page 69: Installation Overview

    Installation Overview Exhaust pipe connection Vent terminal Intake pipe connection Intake pipe connection Exhaust pipe connection Water heater Vent pipe installation precautions • Do not extend the vent pipe longer than the maximum limits as stated in the installation manual. Vent lengths longer than the stated maximum are dangerous and may cause a fire or explosion •...
  • Page 70 Dimensions After installation Installation orientation options Exhaust 0.5" Exhaust Supply Supply Exhaust 4.8" Wall thickness Supply Bottom Bottom Bottom Min. projection: 3" (Max. projection: 4.1") (2) Wall flange (1) Sleeve 6.4" 0.3" 0.2" 5.6" 0.5" 7.6" 6.4" 8.3" 6.9" (3) Vent terminal 7.6"...
  • Page 71 Vent Terminal VT4-TS-5 VT4-TS-8 Model Numbers: VT4-TS-14 VT4-TS-27 Icons warning of risk level: Denotes content that may result in personal injury or Prohibited WARNING property damage if ignored. This symbol warns of hazards which have the immediate poten- Be sure CAUTION tial to result in severe or lethal personal injury or fire.
  • Page 72 Before Installation Caution Compatibility Check • Make sure that the vent terminal is compatible with the product it will be installed with. If an improper terminal is used, a fire hazard will be created. Choosing Installation Site • Maintain the proper clearances to combustibles The heat and moisture from the water heater may cause corrosion of aluminum materials.
  • Page 73 Installation Requirements Caution Vent Terminal Clearance Requirements Vent terminal installation precautions Note the following vent terminal installation Clearances from obstacles Clearances from combustibles requirements. 1) Do not install the vent terminal indoors Vent terminal Vent terminal Clearances from combustibles 2) Install the vent terminal with a downward slope sloping 12"...
  • Page 74 Vent Terminal Installation Procedure * When drilling, take care not to damage electric wiring, or gas or water piping in walls. 1) Determine the vent terminal installation location and make a 6.3" diameter hole in the wall for the sleeve and 0.3" diameter holes for the screws to hold the sleeve. 6.3"...
  • Page 75 4) Adjusting the vent terminal length Combustion and operation problems my result if the vent terminal isn't set to the appropriate length. Remove this screw and slide The length of the vent terminal must be adjusted out the external cylinder. to fit the wall thickness before the installation is completed.
  • Page 76 Dimensions (1) Sleeve After installation 4.3" Wall thickness 6.9" 5.6" 5.5" 0.3" 4.1" Min. projection: 3" (Max. projection: 4.1") (2) Vent terminal 13" 12" 2.8" 7.1" 5.5" 0.8" 4.1" 0.4" External diameter: 4.1" External diameter: 4" Dimension Table Model Numbers wall thickness VT4-TS-5 3.5"...

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