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CONDENSING TANKLESS GAS WATER HEATER
Owner's Guide
FOR USE IN COMMERCIAL OR MANUFACTURED HOME APPLICATIONS.
WARNING
- 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
14 ng/J or 20 ppm
(Natural Gas Only)
SBB80YY-2
Rev. 08/17
Models : NCC300DV (GQ-C5032WZ-FF US)
NCC300OD (GQ-C5032WZ US)
If the information in this manual is not followed exactly, a fire or explosion
may result causing property damage, personal injury, or death.
Thank you for purchasing this Noritz Tankless Gas Water Heater.
Before using, please:
Read this manual completely for operation instructions.
See the warranty registration card (included separately), and then visit
the Noritz website (www.noritz.com/warranty) to register your product.
Keep this manual (and the warranty registration card) where it can be
found whenever necessary.
Installation must conform with local codes, or in the absence of local
codes, the National Fuel Gas Code, ANSI Z223.1/NFPA 54 - latest edition
and/or the Natural Gas and Propane Installation Code CSA B149.1 -
latest edition.
When applicable, installation must conform with the Manufactured
Home Construction and Safety Standard, Title 24 CFR, Part 3280 or the
Canadian Standard CAN/CSA-Z240 MH Mobile Homes, Series M86.
Noritz America reserves the right to discontinue, or change at any
time, the designs and/or specifications of its products without notice.
NORITZ America Corporation
*SBB80YY*
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Table of Contents
Related Manuals for Noritz NCC300OD
Summary of Contents for Noritz NCC300OD
- Page 1 Home Construction and Safety Standard, Title 24 CFR, Part 3280 or the (Natural Gas Only) Canadian Standard CAN/CSA-Z240 MH Mobile Homes, Series M86. Noritz America reserves the right to discontinue, or change at any time, the designs and/or specifications of its products without notice. NORITZ America Corporation SBB80YY-2 Rev.
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Page 2: 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. Potential dangers from accidents during installation and use are divided into the following four categories. - Page 3 Towel Check whether or not the air Prohibited Be sure is displaced, has holes, is to do. supply vent is blocked with clogged or is corroded. dust, trash, a towel, or the like. Blocking the opening may result [NCC300OD] in incomplete combustion. Do Not Install Indoors. This will cause carbon After the water heater has been out of Prohibited monoxide poisoning and use for a long time make sure that you fill the condensate trap with water. a potential fire hazard. Indoor Be sure This is to prevent dangerous exhaust to do.
- Page 4 Min. 3” (75mm) Min. 3" (75mm) Installation and service must be performed by a qualified installer, Front: service agency or the gas supplier. Sug. 24" (600mm) Be sure to do. [NCC300OD] Upper: If this unit will be installed in a beauty Min. 36" (900mm) salon or other location where hair Left side: spray or aerosols will be used, locate Prohibited Min. 6" (150mm) the unit in a separate area that is Right side: supplied with fresh air from outdoors.
- Page 5 Do not install in locations where excessive dust or debris will be in the air. Be sure Prohibited to do. Do not touch the exhaust vent pipe and Do not use the water heater for exhaust vent terminal during or immediately other than hot water supply, shower after operation of the water heater. and bath. Don’t Prohibited [NCC300DV] [NCC300OD] touch. Do not use a broken or modified power cord. Do not bind, bend or stretch power cords. Do not scratch, modify, or subject them to Prohibited impact or force. Do not use condensate, discharged To prevent burns or scalding, turn off the from the drain pipe, for drinking or power button and wait until the equipment for consumption by animals. cools before performing maintenance. Prohibited Be sure to do.
- Page 6 Important Safety Information CAUTION Do not drink water that has been inside the This unit is only approved for installation unit for an extended period of time. Do not up to 4500 ft. (1350m) above sea level. drink the first use of hot water from the For installations at higher elevations, contact Noritz unit in the morning. America for Instructions. Clean the filter on the water inlet as Do not disassemble the remote controller. frequently as required by the quality of your local water. Do not use benzene, oil or fat detergents to clean the remote controller. Keep the area around the unit clean. This may cause deformation. If boxes, weeds, cobwebs, cockroaches etc. are in Do not get the remote controller wet. the vicinity of the unit, damage or fire can result.
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Page 7: Table Of Contents
Contents Important Safety Information ............... 2 Contents......................7 Overview of Condensing Tankless Gas Water Heater ......8 RC-9018M Operation Overview ..............9 General Parts Main Unit ....................11 Remote Controller ..................12 System Check....................14 Initial Operation .................... 16 For All Systems Clock Adjustment ..................17 Using the Water Heater ................18 Setting Hot Water Temperature.............. -
Page 8: Overview Of Condensing Tankless Gas Water Heater
Overview of Condensing Tankless Gas Water Heater This water heater is a high efficiency, fully condensing appliance. Unlike a traditional tankless water heater, a condensing type captures heat from the exhaust gas and uses it to preheat the incoming cold water as it passes through the secondary heat exchanger as illustrated below. Condensing Conventional Exhaust... -
Page 9: Rc-9018M Operation Overview
RC-9018M Operation Overview - 1 Basic operation It is possible to It is possible to lock [ For recirculation systems ( automatically turn remote controller It is possible to circulate hot water only the water heater operation. during preferred times of day. “ON” or “OFF”. Automatically turned "ON" Automatically turned "OFF" p.20 p.22 p.28 [When using only one water heater:] It is possible to set the remote controller to alert the user when the Pi Pi !! bathtub has reached a preset fill volume to prevent overfilling. p.30 Power Saving Mode The initial setting is set to "Powersave dsply : No-1"... - Page 10 RC-9018M Operation Overview - 2 User Preferences The remote controller can be customized based on the preference of the user in the following ways: The set temperature can be The clock display can be The remote controller restricted to a maximum level shown even though the power display can be turned to prevent high temperature ON/OFF button is set to "OFF". off to save power. settings from being selected. Adjusting the Maximum p.23 Power Saving Modes p.23 Output Temperature The brightness of the The remote controller can be The remote controller can be remote controller can be muted so that it does not emit a muted so that it does not emit adjusted for tone when a button is pressed.
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Page 11: General Parts
Main Unit [NCC300DV (GQ-C5032WZ-FF US)] Indoor Wall Mounted, Power Vent/Sealed Model Intake Pipe Flue Collar Front Cover Water Drain Valve (with Water Filter) (Inside Water Inlet) p.36) Pressure Relief Valve Water Supply Valve Gas Supply Valve Drain Pipe Discharges the condensate. [NCC300OD (GQ-C5032WZ US)] Outdoor Wall Mounted, Power Vented Model Exhaust Vent * The above illustration shows an example of installation. The exact installation configuration may be slightly different. -
Page 12: Remote Controller
General Parts -2 Remote Controller (RC-9018M) The remote controller will emit a tone when a button is pressed. Alarm Off Button Prog Button / Indicator (Red) / Indicator (Red) Activates the automatic water heater power Stops the tone that is emitted “ON” or “OFF” setting as determined by the when an error occurs. ( p.42) user selected schedule. - Page 13 Screen Display * The screen display shown below is for illustration purposes only. The actual display will vary depending on how the water heater is being used. * After a button is pressed, the display will gradually become darker to prevent unnecessary power consumption by the remote controller.
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Page 14: System Check
System Check If you press the button, you can check the status of the system (Display Screen Example [System [Rcrc] ]) Cover shown in the open position. System Displayed on System Description the Remote Controller Water heater only operation. * Water heater and recirculation operation. * During recirculation operation, hot water is always circulated in the piping to provide instant hot water when a fixture is opened. - Page 15 Depending on the configuration of your system, not all functions may be used. General System Diagram Applicable Remote * The number of water heaters, fixtures, and Controller Functions pumps will vary depending on the configuration of the hot water system. Water heater When you start using the system, cold Functions other than water in the piping must be discharged before receiving hot water.
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Page 16: Initial Operation
Initial Operation Before the first use of your water heater, do the following: 1 through 4 Follow steps Open the water supply valve. OPEN CLOSED Open a hot water fixture/faucet to confirm that water is available, and then close the fixture/faucet again. Hot water fixture/faucet Open the gas supply valve. -
Page 17: For All Systems
Clock Adjustment For All Systems Cover shown in the open position. Operation Screen Display Description * This adjustment can be made Press the button regardless of whether the inside the cover. button is ON/OFF. Press the button. * The time changes in 1-minute increments with each press 1) Use the buttons to o f t h e b u t t o n , a n d t h e n i n 10-minute increments if the... -
Page 18: Using The Water Heater
Using the Water Heater For All Systems is displayed, hot water will be discharged at the temperature of the storage tank. Operation Screen Display Description For systems with recirculation operation, * The indicator is lit. button is "ON". is displayed here. * The previously set hot water supply temperature is shown. [For systems with recirculation operation] * If you set the button to "ON",... -
Page 19: Setting Hot Water Temperature
The error code may be more frequently displayed when the unit is set to a high temperature. (125°F or higher) Noritz recommends that water temperature is set as low as possible to prevent scale build-up in the heat exchanger. • Hot water temperatures shown are approximate and may differ from the actual temperature at the fixture depending on external factors such as the season and length of piping in the system. -
Page 20: Automatic Water Heater "On" Or "Off" Operation
Automatic Water Heater “ON” or “OFF” For All Systems * If you set the time to turn "ON" or "OFF" the button, the button is automatically turned "ON" or "OFF" at the set time every day by just turning the button "ON". - Page 21 Operation Hint for operation Follwing this procedure allows for automated control of water heater operation without user interaction. * The setting time shown on the display of the remote controller is for example purposes only. Ex. 1: Both "ON" and "OFF" Ex.
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Page 22: Locking The Remote Controller
Locking the Remote Controller For All Systems By locking the remote controller, the settings cannot be accidentally changed if a button is pressed by mistake. Cover shown in the open position. Operation Screen Display Description * The operation can be locked Press and hold button regardless if the... -
Page 23: Customizable Settings
Customizable Settings <Misc settings> -1 For All Systems Adjusting the Maximum Output Display Screen Power Saving Mode Temperature. [powersave dsply] The maximum output temperature To conserve power consumption by can be limited to prevent discharging the display, it can be turned off hot water at too high of a temperature. - Page 24 Customizable Settings <Misc settings> -2 For All Systems Adjusting the brightness of the <System dependent option> Muting the remote controller. display screen when the remote Error Tone Settings. The remote controller can be muted controller is turned on. so that it does not emit a tone when The remote controller can be muted a button is pressed.
- Page 25 Draining the Water Heater. Restoring Default Settings. Refer to page 33 for details.) Select settings can be restored to the factory default conditions. See items marked with a in the “Default Settings” section ( p.47). button is "OFF". button is "OFF". ...
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Page 26: Enabling Automatic Recirculation Operation
Enabling Automatic Recirculation Operation * To check system status. ( p.14) * When “synchro ON/OFF” is set to “Yes”, recirculation can be activated automatically. * To change “synchro ON/OFF” from “Yes” to “No”, follow the same procedure as described below. Cover shown in the open position. -
Page 27: Manually Starting Recirculation Operation
Manually Starting Recirculation Operation Recirculation operation can be manually stopped or started using this procedure. Cover shown in the open position. Operation Screen Display Description * You can set this function if the 1) Press the button button is "ON". inside the cover, Select "Recirc menu"... -
Page 28: Setting The Recirculation System Operation Timer
Setting the Recirculation System * With the recirculation operation timer set, hot water will be automatically circulated in the hot water pipes. Even with this function activated, it may take several minutes for hot water to be completely circulated through the plumbing system. Set the timer to activate the recirculation system prior to the first use of hot water to ensure hot water is instantly available. - Page 29 Operation Timer Operation Screen Display Description * Every time when you press the 1) Select "AM8:00" using button, the time changes by one hour. [To keep the current “End” time] buttons. Here Press the button without 2) Press the button to changing the "End"...
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Page 30: Single Water Heater Only
Flow Meter Alarm Single Water Heater Only If the flow meter alarm is being used to indicate when a tub is full: • If any hot water is being used besides what is going into the tub, the alarm will sound before the tub is full. - Page 31 Operation Screen Display Description Turn on hot water. Lit during combustion The highest If the hot water temperature has been temperature set so that it does not require mixing, set the mixing valve to its highest setting. The hot water in the bathtub may become lukewarm if it is mixed with cold water at the fixture.
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Page 32: 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 risk, contact the nearest Noritz agent. Take the measures below for extremely cold temperatures*. - Page 33 Preventing Damage from Freezing-2 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 34 Preventing Damage from Freezing-3 Turning the Unit Back On 1. Check that all drain plugs are inserted. 2. Check that all hot water fixtures/faucets are closed. 3. Follow the procedure on p.16 “Initial operation”, steps 1 through 4. 4. Make sure that the area around the appliance is well ventilated; open a window or a door if necessary. Then, operate the unit and verify that condensate is coming out of the drain pipe.
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Page 35: Regular Maintenance
Regular Maintenance-1 Periodic Inspection CAUTION To prevent burns or scalding, turn off the power button and wait until the equipment cools before performing maintenance. Be sure to do. air supply vent [When supplying combustion air For dust and soot in Check from the indoors] the exhaust vent or... - Page 36 Regular Maintenance-2 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. The appliance will remain hot after it is turned off. 1. Close the water supply valve. Inlet 2. Open all hot water fixtures/faucets.
- Page 37 # = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 Damage to the water heater as a result of below is not covered by the Noritz America Limited Warranty. To ensure full warranty coverage, treat or condition water that exceeds the target levels provided in this table.
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Page 38: Troubleshooting
Troubleshooting-1 Initial Operation • Check for reversed plumbing or crossed pipes. Unit does not attempt to ignite when water is running. • Check the water drain valve filter. ( p.36) Unit attempts to ignite but fails • Reset unit and try again. There may be air in the gas line. •... - Page 39 (Continued) • The unit will not heat the water if the flow rate is less than The water is cold when only a 0.5 gallons (2L) per minute. single fixture is open. Open the fixture more or open other fixtures so that a greater flow passes through the unit, and the unit should begin heating again. • Set water temperature at 115°F to 120°F or 48°C (118°F) to Fluctuations in hot water 50°C (122°F). This will allow you to use a higher flow of hot temperatures. water thus meeting the minimum flow requirement of 0.5 GPM (2L/min.).
- Page 40 Troubleshooting-2 Remote Controller The power ON/OFF indicator • Has there been a power failure? does not light up. • 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. power is disconnected.
- Page 41 Other The Heater stops burning during • Are the gas and water supply valves fully open? operation. • Is the water supply cut off? • Is the hot water fixture/faucet sufficiently open? • Is the gas being cut off by the gas meter? (Can other gas devices such as stoves be used?) •...
- Page 42 Clogging of condensate Check to see if the condensate drain pipe is clogged or frozen ( p.8) trap or drain pipe Contact the installer or Noritz America Technical Support for assistance. [When supplying combustion Clean the air supply vent.( p.35) If the display continues, contact the nearest Noritz agent.
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Page 43: Follow-Up Service
Requesting Service First follow the instructions in the troubleshooting section ( p.38 to p.42). If the error is not corrected, contact Noritz America Technical Support at 866-766-7489. We will need to know: The Model ....(check the rating plate) *See p.4 for the location of the label Date of purchase ..(see the warranty) - Page 44 Period of Time for Stocking Repair Parts Noritz will stock repair and maintenance parts for this unit for the time period from the date of the original installation as follows: twelve (12) years for the heat exchanger and ten (10) years for remaining parts.
- Page 45 Make sure that all parts are replaced and properly installed by a qualified service agency. * A Noritz remote controller and a digital gas manometer are required to complete the installation. Do not proceed if this equipment is not immediately available.
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Page 46: Specifications
• The capacity may differ slightly, depending on the water pressure, water supply, piping conditions, and water temperature. Specifications Item Specification Model Name NCC300DV (GQ-C5032WZ-FF US) NCC300OD (GQ-C5032WZ US) Type Installation Indoor Wall Mounted Outdoor Wall Mounted Air Supply/Exhaust Power Vented... -
Page 47: Default Settings
Default Settings Items Default setting Clock display (unset) Hot water temperature 110˚F / 40˚C Hot water volume alarm off Customizable Settings ( P23 - 25) Default setting Maximum Output Temperature 185˚F / 85˚C "Powersave dsply" and clock display No-1 Brightness of the display screen when Normal the remote controller is turned on.