Noritz NC1991-DVC Installation Manual
  1. Manuals
  2. Brands
  3. Noritz Manuals
  4. Water Heater
  5. NC1991-DVC
  6. Installation manual
Noritz NC1991-DVC Installation Manual

Noritz NC1991-DVC Installation Manual

Tankless
Hide thumbs Also See for NC1991-DVC:
Table of Contents

Advertisement

Quick Links

Download this manual 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
SBA8873-1
Rev. 04/12
NC1991-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
F O R U S E I N R E S I D E N T I A L O R M A N U FA C T U R E D H O M E
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).
Low NOx
When applicable, installation must conform with the Manufactured
Approved by
Home Construction and Safety Standard, Title 24 CFR, Part 3280 or the
Canadian Standard CAN/CSA-Z240 MH Mobile Homes, Series M86.
SCAQMD
14 ng/J or 20 ppm
Noritz America reserves the right to discontinue, or change at any
time, the designs and/or specifications of its products without notice.
(Natural Gas Only)
(Indoor Installation)
Ground
NORITZ AMERICA
CORPORATION
Be sure to do
*SBA8873*

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the NC1991-DVC and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Noritz NC1991-DVC

Summary of Contents for Noritz NC1991-DVC

  • Page 1 Home Construction and Safety Standard, Title 24 CFR, Part 3280 or the Canadian Standard CAN/CSA-Z240 MH Mobile Homes, Series M86. SCAQMD 14 ng/J or 20 ppm Noritz America reserves the right to discontinue, or change at any time, the designs and/or specifications of its products without notice. (Natural Gas Only) SBA8873-1 Rev.

  • Page 2: Included Accessories

    The following accessories are included with the unit. Included Accessories Check for any missing items before starting installation. Shape Shape Q’ty Q’ty Part Part Owner's Guide, Warranty, Installation Manual Tapping Screw each (this document) Remote Controller Drain hose (See p.21) (With clamp) 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' (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 Clearance Above grade, veranda, porch, deck,...
  • 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 5 (1.5m) or more • Terminate at least 6' (1.8m) from the combus- tion air intake of any appliance, and 3' (0.9m) Rain from any other building opening, gas utility me- ter, service regulator etc. ir ntake •...

  • Page 14: Gas Piping

    Gas Piping ollow the instructions from the gas supplier. The appliance and its individual shutoff valve must be disconnected from the gas suppl piping s stem ⁄ during an pressure testing of that s stem at test pressures in e cess of psig ( .5 kPa).
  • Page 15 Gas ine Si ing for a orit Tankless Gas Water eater dapted from UPC 1 Ma imum atural Gas Deliver Capacit in Cubic eet per our (0. 0 Specific Gravit 0.5" WC Pressure Drop) ength in eet Pipe Si e 10 ( m) 20 ( m) 0 ( m) 40 (12m) 50 (15m) 0 (18m) 70 (21m) 80 (24m) 0 (27m) 100 ( 0m) 125 ( 7.5m)

  • Page 16: Water Piping

    Installation and service must be performed by a qualified plumber. In the Water Piping Commonwealth of Massachusetts this product must be installed b a licensed plumber or gas fitter in accordance with the Massachusetts Plumbing and Fuel Gas Code 248 CMR Sections 2.00 and 5.00. bserve all applicable codes. This appliance is suitable for combination potable water and space heating applications.
  • Page 17 Supply water piping Hot water piping Do not use PVC iron or an piping which has been Do not use lead PVC iron or an piping which treated with chromates boiler seal or other chemicals. has been treated with chromates boiler seal or Mount a check valve and a shut off valve (near the inlet).

  • Page 18: Water Treatment

    Water Treatment f this w ter he ter will be inst lle in n pplic tion where the suppl w ter is h r the w ter must be tre te with either the Norit 2 low or c le hiel or w ter softener.

  • Page 19: Plumbing Applications

    Plumbing Applications ecircul tion stem Notes 1. i e the pump to pro i e imum of 2 min. through the s stem t 10 ft 3m of plus piping losses. ust the flow using globe l e n erif the ter eturn flow r te with the m inten nce monitors.

  • Page 20: Electrical Wiring

    Consult a qualified electrician Electrical Wiring for the electric l wor . o not connect electric l power to the unit until ll electric l wiring h s been complete . isconnect ower his ppli nce must be electric ll groun e in ccor nce with loc l co es or in the bsence of loc l co es with the N tion l Electric l o e 70.

  • Page 21: Remote Controller

    Remote Controller pplicable Model orit Tankless Gas Water eater RC- 018M Remote controller nstall the remote controller according to the instructions in the nstallation Guide. (p. nl one remote controller can be connected to the water heater. malfunction ma occur if two or more remote controllers are connected. This unit can be programmed so that it will default to one of four temperatures if the remote controller is removed 185 (85 C) 140...
  • Page 22 Connecting Remote Controller Cord to Unit eep the remote controller cord awa from the free e prevention heaters in the unit. Tie the redundant cord outside the water heater. Do not put the e tra length inside the e uipment. The remote controller cord can be e tended up to 00 ( 0m) with 18 WG wire.
  • Page 23 Changing ther eatures 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 tems Choices (factor defaults shaded) Celsius ahrenheit ( ahrenheit) gal C (Celsius) displa mode.

  • Page 24: Pump Wiring

    * This feature is not available when using the Quick Pump Wiring Connect Multi S stem feature. Connecting the pump control wire 1. eave enough slack so that the pump control wires will sta connected if the unit is removed from the Pump Control wall.
  • Page 25 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 26: Maintenance

    Maintenance Periodicall 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 an leaks or corrosion. • The burner flame must be checked periodically for a proper blue color and consistency. •...

  • Page 27: Lighting Instructions

    CAUTION Handling after trial operation f the unit will not be used immediatel close off all gas and water shutoff valves drain all of the water out of the unit and the plumbing s stem to prevent the unit and s stem from free ing and bleed the gas out of the gas line.
  • Page 28 Dimensions 13.8" (336mm) < inch (mm) > 0.4" - 1.8" (10 - 45mm) 11.0" (280mm) 4.8" (120mm) 13.8" (350mm) 0.2" x 0.4" (6-6 x 10mm) OBLONG HOLE 5.5" (140mm) 13.1" (334mm) FLUE COLLAR 3.9" (100mm) Ø5.0" (Ø127mm) 2.8" (70mm) 1.1" (28mm) AIR INLET Ø3.1"...
  • Page 29 Multi-System nstall one s stem controller (SC- 01- M- T) for ever si units. Dipswitch Settings (for remote controllers RC-7 47M or RC-7 50M when used with s stem controller SC-201- M) ote When this water heater is used with remote controllers RC-7 4 M-2 RC-7 4 M or RC- 018M it is not necessar to follow this procedure.
  • Page 30 ample of Recirculation with a Multi-S stem (Recirculation s stem) 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 s stem controller will turn off the pump until the loop cools down.
  • Page 31 ample of nstallation with a Storage Tank and Recirculation S stem (Tank recirculation s stem) The pump will push water through the Multi-S stem to heat up the tank. When the temperature of the thermostat is high the s stem controller will turn off the pump until the the temperature cools down.
  • Page 32 Multi-System Wiring Use SC-3 1-6M -E T * onnect these to the Unit 1 remote control termin l bloc in e ch unit S stem Controller Power Remote control terminal block Remote Controller Cord Remote Controller nit 2 * he remote controller termin l loc tion m iffer epen ing on the unit.

  • Page 33: Remote Controller

    ● 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.

  • Page 34: Included Parts List

    Included Parts List (The value in ( ) indicates the quantity.) Mounting Machine Raised countersunk Raised countersunk Wall anchor Remote Controller bracket screw head wood screw head screw (For junction box installation) Notes on the Installation Location Connection of Remote Controller Cord •...
  • Page 35 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.

Table of Contents