1. DL manuals
  2. ProTough
  3. Water Heater
  4. NR111-OD
  5. Installation Manual

ProTough NR111-OD Installation Manual

Manual is about: TANKLESS GAS WATER HEATER

Summary of NR111-OD

  • Page 1

    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. Prohibited disconnect power ground be sure to do warning: if the information in this manual is not followed exactly, a fire ...

  • Page 2: Included Accessories

    2 1. Included accessories the following accessories are included with the unit. Check for any missing items before starting installation. Q’ty shape part 1 each part shape q’ty 3 1 remote controller (see p. 16) remote controller cord (10ft) 1 2. Optional accessories the accessories listed below are ...

  • Page 3

    3 g quick connect cord remote controller cord gas supply piping cold water supply hot water remote controller terminal block cord connector cord connector 3. Quick connect multi system installation • the quick connect multi system allows the installation of two units together utilizing only the quic...

  • Page 4: Before Installation

    4 4. Before installation do not use equipment for purposes other than those specified • do not use for other than increasing the temperature of the water supply, as unexpected accidents may occur as a result. Check water supply quality • if the water supply is in excess of 12 grains per gallon (200 ...

  • Page 5: Warning

    5 • avoid places where fires are common, such as those where gasoline, benzene and adhesives are handled, or places in which corrosive gases (ammonia, chlorine, sulfur, ethylene compounds, acids) are present. Using the incorrect voltage may result in fire or cracking. • avoid installation in places ...

  • Page 6: Installation Clearances

    6 6. Installation clearances 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 – latest edit...

  • Page 7

    7 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 description ref a= d e b b f b a g h i c b m k a j b b l cleara...

  • Page 8: Installation

    8 illustration 7. Installation check 4. Drill holes for the remaining four screws. 5. Hang the unit again by the first screw, and then insert and tighten the remaining four screws. 6. Take waterproofing measures so that water does not enter the building from screws mounting the device. • make sure t...

  • Page 9: Gas Piping

    9 gas meter select a gas meter capable of supplying the entire btuh demand of all gas appliances in the building. Gas connection • do not use piping with a diameter smaller than the inlet diameter of the water heater. • gas flex lines are not recommended unless they are rated for 250,000 btuh. • ins...

  • Page 10

    10 gas line sizing for a noritz tankless gas water heater maximum natur natural gas delivery capacity in cubic feet per hour (0.60 specific gravity, 0.5" wc pressure drop) contact the gas supplier for btu/cubic ft. Of the supplied gas. 1000 btu/cubic ft. Is a typical value maximum liquefied p liquef...

  • Page 11: Water Piping

    11 9. Water piping this appliance is suitable for potable water and space heating applications. Do not use this appliance if any part has been underwater. Immediately call a qualified service technician to inspect the appliance and replace any part of the control system and gas control which has bee...

  • Page 12

    12 supply water piping • do not use pvc, iron, or any piping which has been treated with chromates, boiler seal or other chemicals. • mount a check valve and a shut off valve (near the inlet). • in order for the client to use the water heater comfortably, 98.1 to 491 kpa (14 to 70 psi) of pressure i...

  • Page 13: Water Treatment

    13 water treatment water treatment system city water supply pressure relief valve hot water to fixtures shutoff valve drain cold to water heater optional sediment filter water treatment device shutoff valve noritz nr111-od type of water hardness level treatment device flush frequency* type of water ...

  • Page 14: 10.

    14 10. Plumbing applications recirculation system combination potable water and space heating system cold water supply isolation kit(*4) gas supply aquastat(*3) pump control signal(*2) relay for pump (if larger than 85 watts) hot water optional 8-10 gallon storage tank (to alleviate cold water sandw...

  • Page 15: 11.

    15 do not connect electrical power to the unit until all electrical wiring has been completed. Consult a qualified electrician for the electrical work. 11. Electrical wiring this appliance must be electrically grounded in accordance with local codes, or in the absence of local codes, with the nation...

  • Page 16: Warning

    16 • applicable model remote controller remote controller rc-7649m nr111-od • 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. • hot water heater temperatures over 125°f can cause sever...

  • Page 17

    17 remote controller cord • for extensions, a 26' cord can be purchased (part # rc-cord26) or use 18awg wire. • install according to the national electrical code and all applicable local codes. Connecting remote controller cord to unit • keep the remote controller cord away from the freeze preventio...

  • Page 18: Pump Wiring

    18 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 wall. 2. Remove the front cover of the heater (4 screws). 3. Cut off the connector at the end of the pump control wires. 4. Wire the pump control wires through...

  • Page 19

    19 connecting quick connect cord the wire coloring on the quick connect cord will not be the same as the wire coloring of the connection plug inside the unit. * the remote controller can be connected to either unit a or b. Do not connect a remote controller to both units. * disconnect the remote con...

  • Page 20: 12.

    20 (1) open a hot water fixture and confirm that the burner on lamp comes on, and that hot water is being produced. (if necessary, repeat until the air in the gas piping is bled out). * white smoke may be noticed from the exhaust vent during cold weather. However, this is not a malfunction of the un...

  • Page 21: Caution

    21 lighting instructions this water heater does not have a pilot. It is equipped with an ignition device that automatically lights the burner. Do not try to light the burner by hand. 1. Read the safety information in the installation manual or on the front of the water heater. 2. Turn off all electr...

  • Page 22: 14.

    22 14. Dimensions nr111-od nr111-od 1.7" 2.2" gas inlet 2.2" 10.6" 3.2" 1.7" 2" 18.3" 24.2" 17.6" air inlet led 17.7" gas inlet 1.6" 9.4" 0.4" 0.4" 0.4" air inlet 26.2" 23.1" 1.4" 2.8" 3.9" 5.5" 6.7" 1.4" 2.8" 3.9" 5.5" 6.7" 7.7" 2.6" 2.8" 3.9" 6.1" 11" 5.3" 5.4" 14.4" 6.3" 6.9" 2.9" gas inlet (3/4"...

  • Page 23: Installation Guide

    23 included parts list remote controller rc-7649m installation guide for installers: read this installation guide carefully before carrying out installation. Noritz america corporation note do not connect power to the water heater before the remote controller has been properly installed. Recommended...

  • Page 24

    24 installation 1. Apply wall packing to the rear side of the remote controller. 2. Connect the remote controller wires to the separate remote controller cord. Phillips roundhead wood screw wall anchor 3. Remove the cover of the remote control, mark the location of the screw holes, and drill holes f...

  • Page 25

    25 installing the remote controller outdoor junction box 1. Insert the remote controller wires through the wall pipe and secure the wall pipe to the remote controller. Locate the remote controller wall packing, slide it over the pipe and wires, and apply it to the rear side of the remote. 2. Drill a...