Noritz NR981-DVC Installation Manual
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Noritz NR981-DVC Installation Manual

Noritz NR981-DVC Installation Manual

Tankless gas water heater indoor installation
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See also: Owner's Manual
Installation Manual
TANKLESS GAS WATER HEATER
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 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, 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
SBA8871-2
Rev. 03/13
NR981-DVC
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 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
CSA B149.1, Natural Gas and Propane Installation Code (NSCNGPIC).
Noritz America reserves the right to discontinue, or change at any
Low NOx
time, the designs and/or specifications of its products without notice.
Approved by
SCAQMD
14 ng/J or 20 ppm
(Natural Gas Only)
(Indoor Installation)
Ground
NORITZ AMERICA
CORPORATION
Be sure to do
*SBA8871*

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  • 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 Low NOx time, the designs and/or specifications of its products without notice.

  • Page 2: Included Accessories

    The following accessories are included with the unit. Included Accessories 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) The accessories listed below are not Optional Accessories included with the units, but may be necessary for installation.

  • 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' (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

    WARNING Precautions on Vent Pipe • This appliance requires the use of special concentric type vent pipe specified by Noritz America. Do not attempt to use materials that are not specified for use on this appliance. Improper venting may result in a fire, property damage, or exposure to Carbon Monoxide.

  • 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...

  • 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: Securing To The Wall

    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 Direct Vent US Direct Vent...
  • Page 9 • 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 10: Vent Pipe Installation

    Z233.1/NFPA 54 – latest edition, and in Canada, in accordance with NSCNGPI. • This appliance requires the use of special concentric type vent pipe specified by Noritz America. Do not attempt to use materials that are not specified for use on this appliance.
  • Page 11 Maximum Vent Length Adjustment Dip Switches 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 12 • Do not common vent or connect more than way to the end. one appliance to this venting system. • Noritz Concentric vent pipe is approved for use on this appliance with zero clearance to com- • Terminate at least 12" (300mm) above grade or snow line.
  • Page 13 Vertical Vent Termination (1. m) or more • Terminate at least 6' (1.8m) from the combus- tion air intake of any appliance, and 3' (0.9m) from any other building opening, gas utility me- ter, service regulator etc. ir nta e •...

  • Page 14: Gas Piping

    Gas Piping ollo the instructions from the as su lier. he a liance and its individual shutoff valve must e disconnected from the as su i in s stem ⁄ durin an ressure testin of that s stem at test ressures in e cess of si (3.
  • Page 15 as ine Si in for a orit an less as Water Heater da ted from U C 1 a imum atural as Deliver Ca acit in Cu ic eet er Hour (0.60 S ecific ravit 0. " WC ressure Dro ) en th in eet Si e 10 (3m) 20 (6m) 30 ( m) 40 (12m) 0 (1 m) 60 (18m) 0 (21m) 80 (24m) 0 (2 m) 100 (30m) 12 (3 .

  • Page 16: Water Piping

    Installation and service must be performed by a qualified plumber. In the Water Piping Common ealth of assachusetts this roduct must e installed a licensed plumber or gas fitter in accordance with the Massachusetts Plumbing and Fuel as Code 248 C Sections 2.00 and .00.
  • Page 17 Supply water piping Hot water piping Do not use VC iron or an i in hich has een Do not use lead VC iron or an i in hich treated ith chromates oiler seal or other chemicals. has een treated ith chromates oiler seal or other chemicals.

  • Page 18: Water Treatment

    Water Treatment f this ater heater ill e installed in an a lication here the su ater is hard the ater must e treated ith either the orit H2 lo or ScaleShield or a ater softener. efer to the elo ta les for su ested treatment and maintenance measures to e ta en ased on the...

  • Page 19: Plumbing Applications

    Plumbing Applications Recirculation S stem otes 1. Si e the pump to provide a ma imum of 2 GPM (7.5 min.) through the s stem at 10 ft ( m) of head plus piping losses. d ust the flow using a globe valve and verif the ater Return flow rate with the maintenance monitors.

  • Page 20: Electrical Wiring

    Consult a qualified electrician Electrical Wiring for the electrical or . Do not connect electrical o er to the unit until all electrical irin has een com leted. Disconnect o er his a liance must e electricall rounded in accordance ith local codes or in the a sence of local codes ith the ational lectrical Code...

  • Page 21: Operation Panel

    Operation Panel nl one o eration anel can e connected to the ater heater. malfunction ma occur if t o or more o eration anels are connected. he ater heater has een factor set to allo a ma imum tem erature settin of 120 0 C .
  • Page 22 Chan in ther eatures Adjusting the Temperature Display Note: The setting must be done within the first 10 minutes of connecting electrical power to the water heater. a le of Settin tems tem o. Choices (factor defaults shaded) Celsius ahrenheit ( ahrenheit) C (Celsius) dis la mode.

  • Page 23: Pump Wiring

    his feature is not availa le hen usin the Pump Wiring Connect ulti S stem feature. Connecting the pump control wire 1. eave enou h slac so that the um control ires ill sta connected if the unit is removed from the um Control all.
  • Page 24 uic Connect ulti S stem nstallation Connecting Quick Connect Cord-2 use art C-2 onl . (sold se aratel ). Caution he ire colorin on the uic Connect Cord-2 ill not e the same as the ire colorin of the connection lu inside the unit. 1.

  • Page 25: Maintenance

    Maintenance eriodicall chec the follo in to ensure ro er o eration of the ater heater. • The venting system must be examined periodically by a qualified service technician to check for an lea s or corrosion. • The burner flame must be checked periodically for a proper blue color and consistency. •...

  • Page 26: Lighting Instructions

    CAUTION Handling after trial operation f the unit ill not e used immediatel close off all as and ater shutoff valves drain all of the ater out of the unit and the lum in s stem to revent the unit and s stem from free in and leed the as out of the as line.
  • Page 27 Dimensions inch (mm) 1 .2" ( 0.4" - 1.8" (10mm - 45mm) 11.0" (280mm) 4.8" (120mm) 2-0.2" 0.4" ( mm 10mm) 1 .8" ( 50mm) 5.5" (140mm) 1 .1" ( 4mm) . " (100mm) 5.0" ( 127mm) 11" (28mm) 2.8" (70mm) .1"...

  • Page 28: Post Installation Checks

    Requests to Installers ● In order to use the water heater safely, read this installation tional emote Controller guide carefully, and follow the installation instructions. ● Failures and damage caused by erroneous work or work not C- 018 as instructed in this manual are not covered by the warranty. ●...

  • Page 29: Included Parts List

    Included Parts List (The value in ( ) indicates the quantity.) Mounting Machine Raised countersunk Raised countersunk Wall anchor emote Controller bracket screw head wood screw head screw (For junction box installation) Notes on the Installation Location Connection of Remote Controller Cord •...
  • Page 30 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.
  • Page 31 Connecting of Remote Controller Cord to Water Heater. 1. Remove the front cover of the heater (4 screws). 2. Disconnect the operation panel connector from other unit. peration panel connector 3. Cut off the connector at the end of the operation panel wires ant the Y-shaped terminals (two-cord) of remote controller cord.

  • Page 32: Optional Remote Controller

    Optional Remote Controller Applicable Model Noritz Tankless Gas Water Heater * Remarks [125 °F / 55 °C] Celsius display mode Remote controller C- 018 Fahrenheit display mode Install the remote controller according to the instructions in the Installation Guide. (p. 28).
  • 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.

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