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Installation Manual
CONDENSING TANKLESS GAS WATER HEATER
NCC300DV (GQ-C5032WZ-FF US)
Potential dangers from accidents during installation and use are divided into the following three
categories. Closely observe these warnings, they are critical to your safety.
DANGER
WARNING
CAUTION
WARNING:
If the information in this manual is not followed exactly, a fire or explosion may result
causing property damage, personal injury or death.
Prohibited
Requests to Installers
• In order to use the water heater safely, read this installation manual carefully, and follow the
installation instructions.
• Failures and damage caused by erroneous work or work not as instructed in this manual are not
covered by the warranty.
• Check that the installation was done properly in accordance with this Installation Manual upon
completion.
• After completing installation, either place this Installation Manual in a plastic pouch and attach
it to the side of the Water Heater (or the inside of the pipe cover or recess box if applicable), or
hand it to the customer to retain for future reference.
CERTIFIED
R
Low NOx Approved by SCAQMD
14 ng/J or 20 ppm
(Natural Gas Only)
SBB80Z0-2
Rev. 11/20
DANGER indicates an imminently hazardous situation which,
if not avoided, will result in death or serious injury.
WARNING indicates a potentially hazardous situation which,
if not avoided, could result in death or serious injury.
CAUTION indicates a potentially hazardous situation which,
if not avoided, may result in minor or moderate injury.
Disconnect
Power
CAUTION
FOR USE IN COMMERCIAL OR MANUFACTURED HOME APPLICATIONS.
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.
(Indoor Installation)
Ground
NORITZ AMERICA
CORPORATION
Be sure to do
*SBB80Z0*
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Summary of Contents for Noritz NCC300DV
- Page 1 14 ng/J or 20 ppm 3280 or the Canadian Standard CAN/CSA-Z240 MH Mobile (Natural Gas Only) 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. SBB80Z0-2 Rev. 11/20...
- Page 2 (includes pressure each relief valve) VT4-PVCS 4" (100mm) Pipe Cover Horizontal Hood (PC-7S) Termination PVT-HL SV Conversion Kit Noritz Connect ( SV-CK-4) Wireless Adapter •90 Elbow NWC-ADAPTER (With Inlet Screen) each •Installation Manual (NAW-1 US) (Check List) 4"PVC to 5"...
- Page 3 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.(2m) long. Install the units 3-17" (75 - 432mm) apart from each other to ensure the cord will be able to reach between the units.
- Page 4 Check the Gas • Check that the rating plate indicates the correct type of gas. e.g. NCC300DV(GQ-C5032WZ-FF US) • Check that the gas supply line is sized for 300,000 Btuh. Check the Power •...
- Page 5 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 installation locations cannot be avoided, a suitable drain pan, adequately drained, must be installed under the appliance.
- Page 6 Contact local utilities for code requirements in your area or call: 1-866-766-7489 and request instructions. The Commonwealth of Massachusetts: The water heater can be used for hot water only and not in a combination of domestic and space heating. For Venting Manufacturers Requirements, see websites listed below: Noritz N-Vent www.noritz.com...
- Page 7 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 –...
- Page 8 Clearance Requirements from Vent Terminations to Building Openings <When supplying combustion air from the outdoors (Direct Vent)> * All clearance requirements are in accordance with ANSI Z21.10.3 and the National Fuel Gas Code, ANSI Z223.1 and in Canada, in accordance with the Natural Gas and Propane Installation Code CSA B149.1.
- Page 9 Clearance Requirements from Vent Terminations to Building Openings <When supplying combustion air from the indoors (Non-Direct Vent)> * All clearance requirements are in accordance with ANSI Z21.10.3 and the National Fuel Gas Code, ANSI Z223.1 and in Canada, in accordance with the Natural Gas and Propane Installation Code CSA B149.1.
- Page 10 Installation Securing to the wall • The weight of the device will be applied to the wall. If the strength of the wall is not sufficient, 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 11 Filling the condensate container with water The condensate container can be filled before connecting the vent pipe. Filling the condensate container before vent pipe installation. Prior to initial start up, make sure that you fill the condensate container with water. DANGER This is to prevent dangerous exhaust gases from entering the building.
- Page 12 Vent Pipe Installation (Indoor Installation Only) WARNING CARBON MONOXIDE POISONING Venting with PP pipe Follow all vent system requirements in accordance • Do not deform the PP pipe when cutting. • Deburr the cut end so that damage to the with relevant local or state regulation, or, in the gasket is avoided.
- Page 13 Maximum Vent Length Adjustment Dipswitches 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. Adjust the dip switches according to the vent condition noted in the tables below.
- Page 14 Venting With PVC, CPVC or PP Venting With PVC, CPVC or PP This appliance can be vented with non cellular core plastic pipe materials as specified in the below table. Vent installations in Canada which utilize plastic vent systems must comply with ULC S636. Item Material United States...
- Page 15 Vent Pipe Installation Horizontal Vent Termination - PVC/CPVC Material Only (when using PVT-HL termination) Ceiling Exterior Wall PVT-HL Hanger Straps 4" (100mm) Intake * 1' Minimum Exhaust Slope the Vent ** 4" x 4" coupling 4" (100mm) Upward 12"(300mm) Exhaust Intake above grade or above snow line...
- Page 16 Vent Pipe Installation Alternate Horizontal Vent Termination- PVC, CPVC or PP Material * When 3’ (0.9m) distance between Intake and Exhaust cannot be ensured. * Can not use Hood termination (PVT-HL) * Insert the bird screen. 90° elbow vertical setting (downward). * Ensure at least 3ft (0.9m) or more distance between the near edge of the air intake pipe or exhaust pipe to the inside corner of a wall.
- Page 17 4" (100mm ) PVC Concentric Termination • The concentric termination may be shortened, IPEX Concentric Vent Kits : 196021 but not lengthened from its original factory supplied length. • 4" (100mm) PVC or CPVC pipe may be used with the concentric termination. Hanger 4"...
- Page 18 Vent Pipe Installation (When supplying combustion air from the indoors (SV, non-direct vent)) DANGER When installing this water heater in an area with a large amount of lint such as a commercial Laundromat, direct-vent ("-DV") system must be used. The "-SV" configuration (using an SV conversion kit) is prohibited. When installing this water heater in a mobile home, all combustion must be drawn directly from the outdoors.
- Page 19 Joints with high temperature silicon sealant to (#SV-CK-4) Vent Downward prevent possible condensate leakage. Inlet screen 1' (0.3m) minimum Noritz recommends this venting configuration strongly. recommended, but not required. 90 Elbow • Provide vertical support every 3' (0.9m) or as required When using 4" PVC/CPVC pipe * Not supplied with water heater, order separately.
- Page 20 Supply combustion air to the units as per the National Fuel Gas Code, ANSI Z223.1- Combustion Air latest edition and in Canada, in accordance with the Natural Gas and Propane Installa- tion Code CSA B149.1-latest edition. Provide adequate combustion air so as to not create negative pressure within the building. •...
- Page 21 The installer must be professionally trained to do such work and must always follow all local and national codes and regulations. Gas line sizing calculations must be performed for every installation. Please contact Noritz America at 866-766-7489 if you have any questions or concerns.
- Page 22 Refer to the NFPA 54 for details. Please contact Noritz for details. For corrugated stainless steel tubing (CSST) capacity tables, please consult with the manufacturer.
- Page 23 BTU/Cubic Foot ratings. For simplification of your calculations, 1 Cubic Foot of Gas is approximately equivalent to 1000 BTU. Sample Gas Line Instructions 1. Size each outlet branch starting from the furthest Noritz Condensing Tankless Gas Water Heater using the Btuh required and the length from the meter. Barbecue (300,000 Btuh) 2.
- Page 24 Table 3. Maximum Undiluted Propane (LP) Delivery Capacity in Thousands of BtuH (0.5” WC Pressure Drop) [Schedule 40 Metallic Pipe] Length (including fittings) Pipe 100' 125' 150' 175' 200' Size (3m) (6m) (9m) (12m) (15m) (18m) (24m) (30m) (38m) (45m) (53m) (60m) 1/2"...
- Page 25 Water Piping Installation and service must be performed by a qualified plumber. In the Commonwealth of Massachusetts, this 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.
- Page 26 • In order for the freeze prevention heaters to operate, the water heater must have power at all times. Damage to the water heater as a result Total Hardness* : 200 mg/L (12 gpg) or less of the below is not covered by the Noritz Aluminum : 0.05 to 0.2 mg/L or less America Limited Warranty.
- Page 27 = 1, 2, 3, 4, F # = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 Damage to the water heater as a result of the items below is not covered by the Noritz America Limited Warranty. • Water in excess of 12 gpg (200mg/L) of hardness •...
- Page 28 Procedure for Flushing the Heat Exchanger This procedure is only intended for use by a qualified service professional or authorized Noritz Service Representative. Any unauthorized use of this procedure may result in voiding the warranty.Please contact Noritz America (866-766-7489) for additional support.
- Page 29 Flushing the Heat Exchanger (For Single Unit) 1. Open the Front Cover. 2. Connect the blue connector**** marked "FLUSH". Water Heater Circuit Board Connect **** The connector color is blue and labeled “FLUSH”. Manifold Plate FLUSH 3. Then the code “CCC” is displayed on the 4.
- Page 30 1. Connect the blue connector marked "FLUSH" for unit needing to be flushed. (The water heater is isolated from Quick Connect Multi system when the “blue connector for flushing” is connected. Not need to disconnect the Connect Cord.) Sub Water Heater Main Water Heater Connect Circuit Board...
- Page 31 1. Connect the blue connector marked "FLUSH" for unit needing to be flushed. (The water heater is isolated from Multi System when the “blue connector for flushing” is connected. Not need to disconnect the “Cord for the Multi System” .) Unit 1 Unit 2 Unit 6...
- Page 32 The Code “CCC” goes out on the Remote Controller. 8. Close the Front Covers. 9. Open the gas supply valves and water outlet valves. 10. Check for correct operation of the water heaters. Please contact Noritz America if more information is needed for flushing. (Phone # : 866-766-7489)
- Page 33 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.
- Page 34 Condensate piping to floor drain Condensate piping with pump Condensing Condensing Tankless Gas Tankless Gas Water Heater Water Heater DO NOT ADD DO NOT ADD ANY VALVES ANY VALVES 1/2" PVC pipe 1/2" PVC pipe 3/8" ID tubing* 1/2" PVC elbow Slope pipe downwards The end of the drain pipe 1/4"...
- Page 35 (Model L6006A or L6006C) Combination Potable Water and Space Heating System Notes: 1. Noritz recommends the use of an Isolation Kit with the installation. These kits include an integrated shut-off and service valve with unions and a pressure relief valve.
- Page 36 Electrical Wiring Consult a qualified electrician for the electrical work. Do not connect electrical power to the unit until all electrical wiring has been completed. Disconnect Power 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 37 Remote Controller • Applicable Model Remote controller RC-9018M Install the remote controller according to the instructions in the Installation Guide. (p. 52). * Only one the remote controller can be connected to the water heater. A malfunction may occur if two or more remote controllers are connected. Connecting Remote Controller Cord to Unit •...
- Page 38 Changing Other Features Adjusting the Temperature / Water Quantity Display Note: The setting must be done within the first 10 minutes of connecting electrical power to the water heater. Table of Setting Items Item No. Item Choices (factory defaults shaded) Celsius / Liter °F / gal °C / L...
- Page 39 * This feature is not available when using the Quick Pump Wiring Connect Multi System feature. Connecting the pump control wire 1. Leave enough slack so that the pump control wires will stay connected if the unit is removed from the Pump Control wall.
- Page 40 For Quick Connect Multi System Installation Connecting Quick Connect Cord-2 use part #QC-2 only. (sold separately). Caution The wire coloring on the Quick Connect Cord-2 will not be the same as the wire coloring of the connection plug inside the unit. 1.Red 1.Red 1.White...
- Page 41 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. •...
- Page 42 Press Max. or Min. Manifold Unit A Ignites Unit A Doesn't Ignite Pressure Set Button on Unit B Unit B Doesn't Ignite Unit B Ignites * If an 11 or F11 error code flashes on the remote controller, hit the Power Button on the remote controller off and on 2 -3 times.
- Page 43 Dimensions 18.7" (476mm) < inch (mm) > 12 x 0.24" x 0.4" (6 x 10mm) OBLONG HOLE 6 x Ø0.5" (Ø13mm) 11.8" (300mm) 18.9" (480mm) 7.8" (198mm) 18.3" (466mm) 6.7" (170mm) 0.4" (10mm) 14.2" (360mm) 5.5" (140mm) 9.4" (240mm) 6.3" (160mm) 8.5"...
- Page 44 Multi-System Install one system controller (SC-301-6M, SC-401-6M) for every six units. Dipswitch Settings (for remote controllers RC-7647M or RC-7650M when used with system controller SC-201-6M) Note: When this water heater is used with remote controllers RC-7646M-2, RC-7649M, or RC-9018M, it is not necessary to follow this procedure. When using the remote controller RC-7647M or RC-7650M (ºC temperature display), a dipswitch change will be necessary on all water heaters connected to the system controller.
- Page 45 B-1. Example of Recirculation with a Multi-System (Recirculation 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 46 B-2. Example of Installation with a Storage Tank and Recirculation System (Tank recirculation system) The pump will push water through the Multi-System to heat up the tank. When the temperature of the thermostat is high, the system controller will turn off the pump until the the temperature cools down.
- Page 47 Multi-System Wiring (Use SC-301-6M, SC-401-6M) Unit 1 System Controller No.6 * Connect these to the No.5 remote control terminal No.4 block in each unit No.3 No.2 90 90 B5 B5 Power Remote control terminal block Remote Controller Cord Remote Controller Unit 2 * The remote controller terminal location may differ depending...
- Page 48 A. Installation without a recirculation system (Using external system controller) (Standard System)
- Page 49 B-1. Example of Recirculation with a Multi-System (Using external system controller) (Recirculation 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 50 B-2. Example of Installation with a Storage Tank and Recirculation System (Using external system controller) (Tank recirculation system) The pump will push water through the Multi-System to heat up the tank. When the temperature of the thermostat is high, the system controller will turn off the pump until the the temperature cools down.
- Page 51 Multi-System Wiring (Use SCU-301-12M, SCU-401-12M/24M) CAUTION • The below diagram shows the connection of 3 units to the system controller. When connecting 4 or more units, follow the same procedure. • Connect the water heaters to the system controller follwing the detailed wiring instructions included with the system controller.
- Page 52 ● Refer to the Installation Manual provided with the water heat- er for complete installation details. Installation Guide NORITZ AMERICA CORPORATION In order to use this product safely, read this installation manual carefully and follow the installation instructions. ● Potential dangers from accidents during installation and use are described below.
- Page 53 Included Parts List (The value in ( ) indicates the quantity.) Mounting Machine Raised countersunk Raised countersunk Remote Controller Wall anchor bracket screw head wood screw head screw (For junction box installation) Notes on the Installation Location Connection of Remote Controller Cord White Connector To Remote controller •...
- Page 54 5. Attach the remote controller to the mounting 2. Remove the decorative frame from the remote bracket. Insert the bottom of the remote controller. (The remote controller is inserted in the decorative frame.) controller into the groove at the bottom of the bracket and push in the 2 hooks on top of the remote controller completely.