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Installation Manual
TANKLESS GAS WATER HEATER
This water heater may not be installed outdoors under any circumstances.
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
If the information in this manual is not followed exactly, a fire or explosion may result
WARNING:
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, please 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. Also, be sure to fill in all of the required
items on the warranty and to hand the warranty to the customer along with the Owner's Guide.
CERTIFIED
R
SBA8870-2
Rev. 03/13
(Indoor Installation)
NR981-SV
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
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
CSA B149.1, Natural Gas and Propane Installation Code (NSCNGPIC).
Noritz America reserves the right to discontinue, or change at any
time, the designs and/or specifications of its products without notice.
Low NOx
Approved by
SCAQMD
14 ng/J or 20 ppm
(Natural Gas Only)
Ground
CAUTION
NORITZ AMERICA
CORPORATION
Be sure to do
*SBA8870*
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Related Manuals for Noritz proTOUGH NR981-SV
Summary of Contents for Noritz proTOUGH NR981-SV
- Page 1 National Fuel Gas Code, ANSI Z223.1/NFPA 54- latest edition and/or CSA B149.1, Natural Gas and Propane Installation Code (NSCNGPIC). CERTIFIED Noritz America reserves the right to discontinue, or change at any time, the designs and/or specifications of its products without notice. Low NOx...
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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. Shape Shape Part Q’ty Part Q’ty Owner's Guide, Warranty, Installation Manual Anchoring Screw each (this document) Remote Controller Remote Controller (See p. 20) 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. Do not place outdoors • This water heater is designed for indoor use only. If installed outdoors, rainwater may enter the unit causing damage. -
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 locations cannot be avoided, it is recommended that a suitable drain pan, adequately drained, be installed under the appliance. - Page 6 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 or phone numbers 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 * 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 NSCNGPIC. Vent Terminal Area Where Terminal is Not Permitted Air Supply Inlet Canadian Non-Direct Vent US Non-Direct Vent...
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Page 9: 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 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 10: Vent Pipe Installation
Maximum Vent Lengths General Requirements • The first vertical run from the top of the • Noritz N-Vent is suggested for the vent system. heater should be no longer than 3' (0.9m). If N-Vent is not used, a UL listed category III •... - Page 11 Adapter* above any door, window, or gravity air inlet into any building per National Fuel Gas * Adapter not required when using Noritz N-Vent. Code ANSI Z223.1/NFPA 54. • Slope the horizontal vent 1/4" downwards for **1' minimum recommended, but not required. Avoid installing every 12"...
- Page 12 Supply combustion air to the units as per the National Fuel Gas Code, ANSI Z223.1 Combustion Air and in Canada, in accordance with NSCNGPIC. • Provide two permanent openings to allow circulation of combustion air. 10" (150mm) • Make each opening 199 square inches if they provide indoor air, and 100 square inches for 20"...
- Page 13 Instructions Sample Gas Line 1. Size each outlet branch starting from the furthest Noritz Tankless Gas Water Heater using the Btuh required and the length from the (199,900 Btuh) Barbecue (50,000 Btuh) meter.
- Page 14 Gas Line Sizing for a Noritz Tankless Gas Water Heater Adapted from UPC 1997 Maximum Natural Gas Delivery Capacity in Cubic Feet per Hour (0.60 Specific Gravity, 0.5" WC Pressure Drop) Length in Feet Pipe 10' (3m) 20' (6m) 30' (9m) 40' (12m) 50' (15m) 60' (18m) 70' (21m) 80' (24m) 90' (27m) 100' (30m) 125' (37.5m) Size 1/2"...
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Page 15: 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 16 Supply water piping Hot water piping • Do not use PVC, iron, or any piping which has been • Do not use lead, PVC, iron or any piping which treated with chromates, boiler seal or other chemicals. has been treated with chromates, boiler seal or •...
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Page 17: Water Treatment System
If this water heater will be installed in an application where the supply water is hard, the water must be treated with either the Noritz H2Flow or ScaleShield or a water softener. Refer to the below tables for suggested treatment and maintenance measures to be taken based on the water hardness level. -
Page 18: Plumbing Applications
Set the Aquastat to 10°F (5°C) below the set Expansion Tank output temperature. (Install according Isolation 4. Noritz recommends the use of an Isolation Kit with to local code) the installation. Kit(*4) These kits include an integrated shut-off and service valve with unions and a pressure relief valve. -
Page 19: 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 20 Remote Controller • Applicable Model Noritz Tankless Gas Water Heater * Remarks [125 °F / 55 °C] Celsius display mode RC-7651M Remote controller Fahrenheit display mode Install the remote controller according to the instructions in the Installation Guide (p. 27).
- Page 21 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 22: 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 23 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 24: 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. •... - Page 25 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 26 Dimensions < inch (mm) > 13.2" (336mm) 4-Ø0.5" (Ø13mm) 2-0.3" x 0.5" (6.5mm x13mm) OBLONG HOLE 13.8" (350mm) 9.4" (240mm) 0.4" (10mm) 4.7" (120mm) 13.1" (334mm) 3.7" (95mm) 3.3" (85mm) Ø4" (Ø100mm) FLUE COLLAR 2.0" (50mm) 1.1" (28mm) AIR INLET 0.4"...
- Page 27 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 28: 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. - Page 29 Requests to Installers Optional Remote Controller ● In order to use the water heater safely, read this installation guide carefully, and follow the installation instructions. RC-9018M ● Failures and damage caused by erroneous work or work not as instructed in this manual are not covered by the warranty. ● Refer to the Installation Manual provided with the water heater 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. Closely observe these warnings, they are critical to your safety. CAUTION CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. CAUTION The remote controller is not water resistant. Keep it dry. CAUTION • Do not connect power to the system unit until the remote controller installation is complete. • Be sure to fasten the mounting screws tightly by hand so that the remote controller will be secure. * Do not use electric drivers, impact drivers and so forth. Tightening with excessive force may cause the mounting bracket to be damaged and lead to failures. • Install the remote controller on an even wall surface.
- Page 30 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 • The remote should be installed in an easily accessible location. Y-shaped terminals To Water heater • Avoid installing in a place where water (two-core) or steam can come into contact with the * Confirm the connection with the labels at...
- Page 31 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 controller into the groove at the bottom of the in the decorative frame.) bracket and push in the 2 hooks on top of the remote controller completely. * If it is difficult to attach, do not try to force it Main remote as it may result in broken hooks. Check for controller body proper alignment in the groove or for loose wires obstructing the remote controller.
- Page 32 Optional Remote Controller • Applicable Model Noritz Tankless Gas Water Heater * Remarks [125 °F / 55 °C] Celsius display mode RC-9018M Remote controller Fahrenheit display mode Install the remote controller according to the instructions in the Installation Guide. (p. 29). * Only one remote controller can be connected to the water heater. A malfunction may occur if two or more remote controllers are connected. * The water heater has been factory set to allow a maximum temperature setting of [120°F / 50°C]. To access higher temperature settings through the remote controller, follow the below steps. <When setting the maximum temperature to [125 -140°F / 55-60°C]> 1. Turn the water heater off by pressing the Power On/Off Button on the remote controller. 2. Press the MENU Button inside the remote cover, select "Misc settings" using the / Buttons. 3. Press the ENTER Button, the "Misc settings" screen appears on the display. 4. Select "Max set Temp" using the / Buttons. 5. Press the ENTER Button, [120°F / 50°C] appears on the display. 6. Set the upper limit of the hot-water supply temperature to [125°F, 130°F, 135°F or 140°F / 55°C or 60°C] using the / Buttons. 7. Press the ENTER Button, "Set complete" appears on the display and then returns to the "Misc settings" screen. 8. To put the water heater back into operation, press the Power On/Off Button on the remote controller. To keep the water heater off, either press the MENU Button or let the unit sit for 20 sec. to return to the original display. DANGER • When changing the temperature, make sure to confirm with the customer that the temperature of the hot water will be very high and that there is a risk of scalding.
- Page 33 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 Choices (factory defaults shaded) Celsius/Fahrenheit °F (Fahrenheit) / gal °C (Celsius) / L display mode. Remote Controller Power On/Off Button Display MENU Button ▲/▼ Buttons ENTER Buttton Setting Procedure 1. Turn the water heater off by pressing the Power On/Off Button on the remote controller. 2. Disconnect, then reconnect electrical power to the water heater. 3. Press the MENU Button inside the cover, select "Initial settings" using the ▲/▼ Buttons. 4. Press the ENTER button, the "Initial settings" screen appears on the display. 5. Select "[°F / gal] < ---- > [°C / L]" using the ▲/▼ Buttons. 6. Press the ENTER Button and select either [°F / gal] or [°C / L] using the ▲/▼ Buttons. 7. Press the ENTER Button, "Set complete Please wait..." appears on the display for 5seconds and then the "Initial settings" screen appears on the display. 8. To confirm the setting, turn the water heater on by pressing the Power On/Off Button on the remote controller.
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