Noritz N-0842MC-DV Installation Manual
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Noritz N-0842MC-DV Installation Manual

Noritz N-0842MC-DV Installation Manual

Condensing tankless gas water heater
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Installation Manual
CONDENSING 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
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
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
Department of Buildings
SBA8223
Rev. 04/09
N-0842MC-DV
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
Low NOx
Approved by
SCAQMD
Accepted For Use
City of New York
MEA 19-03-E
(Indoor Installation)
Ground
FOR USE IN RESIDENTIAL, COMMERCIAL, OR MANUFACTURED HOME AP-
PLICATIONS.
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).
When applicable, installation must conform with the Manufactured Home Con-
struction 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.
NORITZ AMERICA
CORPORATION
Be sure to do
*SBA8223 C*

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Summary of Contents for Noritz N-0842MC-DV

  • Page 1 Safety Standard, Title 24 CFR, Part 3280 or the Canadian Standard Low NOx CAN/CSA-Z240 MH Mobile Homes, Series M86. Approved by Noritz America reserves the right to discontinue, or change at any SCAQMD time, the designs and/or specifications of its products without notice. Accepted For Use...

  • Page 2: Included Accessories

    The following accessories are included with the unit. Included Accessories Check for any missing items before starting installation. Part Shape Part Shape Q’ty Q’ty Owner's Guide, Warranty, Tapping Screw Installation Manual each (this document) Remote Controller Remote Controller (See p. 23) Cord (10ft) 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. long. Install the units 2-18" apart from each other to ensure the cord will be able to reach between the units.

  • Page 4: Before Installation

    • If this product will be installed in an area where snow is known to accumulate, protect the vent termination from blockage by snow drifts or damage from snow falling off of roofs. Check the Gas • Check that the rating plate indicates the N-0842MC-DV 199,900 BTU correct type of gas. 11,000 BTU 10.5...

  • 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 CAUTION • Avoid installation above gas ranges or stoves. • Avoid installation between the kitchen fan and stove. If oily fumes or a large amount of steam are present in the installation location, take measures to prevent the fumes and steam from Prohibited entering in the equipment.

  • 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 Clearance Above grade, veranda, porch, deck,...

  • 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 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 Filling the neutralizer unit with water The neutralizer unit can be filled before connecting the vent pipe. Filling the neutralizer unit before vent pipe installation. Prior to initial start up, make sure that you fill the neutralizer unit with water. DANGER This is to prevent dangerous exhaust gases from entering the building.

  • Page 11: 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 12 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 13 Horizontal Vent Termination- PVC/CPVC Materials Only • As illustrated on the left, make sure to keep a distance of 3' or wider between the intake and exhaust when installing the vent piping. • Terminate at least 12" above grade or above snow line.
  • Page 14 • The concentric termination may be shortened, but not lengthened from its original factory supplied length. Hanger • There must be a minimum of 1" clearance between Straps the outside wall and the air intake section of the 1" Strap termination as illustrated on the left.

  • Page 15: Gas Piping

    Instructions Sample Gas Line 1. Size each outlet branch starting from the furthest Noritz Condensing Tankless Gas Water Heater using the Btuh required and the length from the Barbecue (199,900 Btuh) meter.
  • Page 16 Gas Line Sizing for a Noritz Condensing Tankless Gas Water Heater Adapted from UPC 1997 Maximum Natur Natural Gas Delivery Capacity in Cubic Feet per Hour (0.60 Specific Gravity, 0.5" WC Pressure Drop) Length in Feet Pipe Size 100' 125' 1/2"...

  • Page 17: 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 suitable for potable water and space heating applications.
  • Page 18 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 •...

  • Page 19: Water Treatment

    Noritz Scale Shield, that reduce the amount of scale deposits. Refer to the below tables for sug- gested treatment and maintenance measures to be taken based on the water hardness level. Damage to the water heater as a result of water in excess of 12 gpg (200 mg/L) of hardness is not covered by the Noritz America Limited Warranty.

  • Page 20: Condensate Piping

    Condensate Piping • This water heater is a high efficiency, fully condensing appliance which produces condensate during operation. The water heater heater incorporates a collection, neutralization, and removal system which must be properly drained in order to ensure proper operation of this appliance. •...

  • Page 21: Plumbing Applications

    (Model L6006A or L6006C) Combination Potable Water and Space Heating System Notes: 1. Noritz recommends the use of an Isolation Kit with the installation. These kits include an integrated shut-off and serv- ice valve with unions and a pressure relief valve.

  • Page 22: Electrical Wiring

    Consult a qualified electrician Electrical Wiring 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 23: Remote Controller

    To keep the water heater off, let the unit sit for 30 sec. to return to the original display. • The Noritz Condensing Tankless Gas Water Heater can be programmed so that it will default to one of four temperatures if the remote controller is removed (180, 140, 130, 120°F). However, it is suggested that the remote controller always be installed with this water heater in order to prevent an unexpected disruption of hot water service.
  • Page 24 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' with 18AWG wire. •...

  • Page 25: Pump Wiring

    * This feature is not available when using the Quick Con- Pump Wiring nect 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 Pump Control from the wall.
  • Page 26 For Quick Connect Multi System Installation Connecting Quick Connect Cord use a Quick Connect Cord (sold separately). Caution The wire coloring on the Quick Connect Cord will not be the same as the wire coloring of the connection plug inside the unit. 1.Red 1.Red 1.White...

  • Page 27: Maintenance

    Periodically check the following to ensure proper Maintenance 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 28: Lighting Instructions

    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 29 2.8" 3.9" 1.4" HEIGHT OF EACH FITTING 0.4" WATER DRAIN VALVE FROM BOTTOM OF CASE 2.8" WIRING THOROUGHWAY (WATER FILTER) 3.9" N-0842MC-DV WIRING THOROUGHWAY CONDENSATE DRAIN 5.5" CONDENSATE DRAIN 0.9" 6.7" WATER DRAIN VALVE HOT WATER OUTLET 1.7" GAS INLET 6-0.24 x 0.4"...
  • Page 30 B-1. Example of Recirculation with a Multi-System 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 system controller will turn off the pump until the loop cools down.
  • Page 31 B-2. Example of Installation with a Storage Tank and Recirculation System The pump will push water through the Multi-System to heat up the tank. When the return temperature is high, the flow within the device will be limited to 2.6 GPM*.
  • Page 32 Multi-System Wiring (Use SC-201-6M) Unit 1 Disconnect this Connector System Controller No.6 * Connect these to the No.5 remote control terminal No.4 block in each unit Disconnect for system controller No.3 No.2 90 90 B5 B5 Power DPSW 12345678 Remote control terminal block System select connectors Remote Controller Cord...
  • Page 33 Remote Controller RC-7649M 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.
  • Page 34 Installation 1. Apply Wall Packing to the rear side of the 3. Remove the cover of the remote control, remote controller. mark the location of the screw holes, and 2. Connect the remote controller wires to the drill holes for the wall anchors. separate remote controller cord.

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