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Installation Manual
CONDENSING TANKLESS GAS WATER HEATER
NRC98DV (GQ-C2857WS-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 in-
stallation 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)
SBB80JR-3
Rev. 11/20
(Indoor Installation)
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 RESIDENTIAL 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.
Ground
NORITZ AMERICA
CORPORATION
Be sure to do
*SBB80JR*
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Related Manuals for Noritz GQ-C5032WZ US
Summary of Contents for Noritz GQ-C5032WZ US
- 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. SBB80JR-3 Rev. 11/20...
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Page 2: Included Accessories
Included Accessories The following accessories are included with the unit. Check for any missing items before starting installation. Part Shape Q’ty Part Shape Q’ty Owner's Guide, Warranty, Anchoring Screw Installation Manual each (this document) Remote Controller Remote Controller (See p. 34) Cord (6ft (2m)) The accessories listed below are not Optional Accessories... -
Page 3: 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.(2m) long. Install the units 2-18" (50 - 457mm) apart from each other to ensure the cord will be able to reach between the units. -
Page 4: Before Installation
Before Installation DANGER Checkup • 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. -
Page 5: 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 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...
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Page 7: Installation Clearances
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 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 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.
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Page 12: Vent Pipe Installation
Vent Pipe Installation (Indoor Installation Only) WARNING CARBON MONOXIDE POISONING Follow all vent system requirements in accordance with relevant local or state regulation, or, in the absence of local or state code, in the U.S. to the National Fuel Gas Code ANSI Be sure to do Z233.1/NFPA 54 –... - 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 or CPVC 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 Canada Schedule 40 PVC ANSI/ASTM D1785...
- Page 15 Vent Pipe Installation Horizontal Vent Termination- PVC/CPVC Materials Only • As illustrated on the left, make sure to keep a distance of 3' (0.9m) or wider between the intake and exhaust when installing the vent piping. Hanger Insert Bird Screen* Intake * If 3’...
- Page 16 3" (75mm )PVC Concentric Termination • The concentric termination may be shortened, but not lengthened from its original factory supplied length. Hanger • 3" (75mm) or 3" (75mm) or 4" (100mm) PVC or CPVC pipe Straps 4" (100mm) may be used with the concentric termination. 1"...
- Page 17 Vent Pipe Installation Alternate Horitzontal Vent Termination- PVC/CPVC Materials Only * 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 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 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. •...
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Page 20: Gas Piping
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 21 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 22 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 (180,000 Btuh) 2.
- Page 23 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"...
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Page 24: Water Piping
Installation and service must be performed by a qualified plumber. In the Water Piping 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 25 • 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.
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Page 26: Water Treatment System
= 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 27 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 28 Flushing the Heat Exchanger (For Single Unit) 1. Open the Front Cover. 2. Connect the blue connector***** marked "FLUSH" near the Circuit Board. Water Heater Circuit Board Connect ***** The connector color is blue and labeled “FLUSH”. Manifold Plate FLUSH 3.
- Page 29 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...
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Page 30: Condensate Piping
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 31 Condensate piping to floor drain Condensate piping with pump Condensing Condensing Tankless Gas Tankless Gas Water Heater Water Heater DO NOT ADD ANY VALVES DO NOT ADD ANY VALVES 1/2" PVC pipe 1/2" PVC pipe Slope pipe downwards 3/8" ID tubing* 1/2"...
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Page 32: Plumbing Applications
Combination Potable Water and Space Heating System If the Air Handler does not control the water flow automatically, the Scale detection feature will not work. 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 33: Electrical Wiring
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 34 Remote Controller • Applicable Model * Remarks [125 °F / 55 °C] Remote controller RC-7651M Celsius display mode Fahrenheit display mode Install the remote controller according to the instructions in the Installation Guide (p. 41). * Only one remote controller can be connected to the water heater. A malfunction may occur if two or more remote controllers are connected.
- Page 35 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' (90m) with 18AWG wire. •...
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Page 36: Pump Wiring
* 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 37 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...
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Page 38: 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. Yellow Flame or • The burner flame must be checked periodically Lifting Flame for a proper blue color and consistency. - Page 39 * If both units do not ignite, switch which unit will ignite first by pressing the Max. or Min. Mani-fold Pressure Set Button on the circuit board. (*2) 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...
- Page 40 Dimensions < inch (mm)> 17.7" (450mm) 4-Ø0.5" (13mm) 6- 0.24" x 0.4" (6mm x 10mm) OBLONG HOLE 6.7" (170mm) 18.3" (464mm) 5.5" (140mm) 17.6" (448mm) 9.4" (240mm) 0.4" (10mm) 5.9" (150mm) 9.1" (232mm) 3.9" (100mm) 5.5" (140mm) Ø 4.5" (114mm) Ø...
- Page 41 Remote Controller RC-7651M 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. Recommended installation location of the remote controller is in a bathroom.
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Page 42: Installation
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.