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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 or explosion may result

causing property damage, personal injury or death.

NORITZ AMERICA
CORPORATION

Installation Manual

TANKLESS GAS WATER HEATER

N-0751M-DV

 

 (Indoor Installation)

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.

DANGER

WARNING

CAUTION

SAR8563-6

Rev. 08/08

*SAR8563   C*

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.

CAUTION

FOR USE IN RESIDENTIAL, COMMERCIAL, OR MANUFACTURED
HOME  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).
When applicable, installation must conform with the Manufactured
Home Construction 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.

CERTIFIED

R

Low NOx

Approved by

SCAQMD

Accepted For Use

City of New York

Department of Buildings

MEA 19-03-E

Summary of Contents for N-0751M-DV

Page 1: ...ucted 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 eith...

Page 2: ...p 20 Remote Controller Cord 10ft 1 2 Optional Accessories The accessories listed below are not included with the units but may be necessary for installation Q ty Shape Part Part Shape Q ty Flue Termi...

Page 3: ...etween the two units When connecting two units use only a single remote controller Note Connect the remote controller to only one of the units System Diagram Insulate the hot water piping to prevent h...

Page 4: ...to ensure output temperatures do not get to scalding levels Do not use a solar pre heater with the quick connect multi system Precautions on Vent Pipe Replacement The vent system will almost certainl...

Page 5: ...as a result Avoid installation in places where special chemical agents e g hair spray or spray detergent are used Ignition failures and malfunction may occur as a result Carbon Monoxide Poisoning Haza...

Page 6: ...ing to the National Fuel Gas Code ANSI Z223 1 State of California The water heater must be braced anchored or strapped to avoid moving during an earthquake Contact local utilities for code requirement...

Page 7: ...s restriction will not be applied to an area where an effective shield makes a clearance of 24 or more in front of the exhaust outlet Check Illustration If possible leave 8 or more on either side of t...

Page 8: ...ter regulator assembly 3 within a height 15 above meter regulator assembly I Service regulator vent outlet 3 J Nonmechanical air supply inlet or combustion air inlet to any other appliance 12 36 K Mec...

Page 9: ...Locating Screw Holes Mounting Structure When installing with bare hands take caution to not inflict injury Be careful not to hit electrical wiring gas or water piping while drilling holes Item CAUTIO...

Page 10: ...oo far Snow drift Tree Avoid installing the terminal where obstacles will block it Clearance from vent terminal If multiple units are installed terminals must be separated by 12 or more in a plain vie...

Page 11: ...in bad combustion If possible don t install the vent pipe through any enclosed areas If necessary consult the pipe manufacturer s instructions for clearances Install the vent terminal so that all exh...

Page 12: ...straight upwards Always have a horizontal section of venting Install a condensation drain in the horizontal section of the venting Appliance Adapter Firestop Firestop Support Roof Flashing RainCap Exh...

Page 13: ...he gas line consult local codes or the National Fuel Gas Code ANSI Z223 1 Natural Gas Meter See next page for the pipe capacity charts Noritz N 0751M DV 199 900 Btuh Clothes Dryer 35 000 Btuh Barbecue...

Page 14: ...c Feet per Hour of Natural Gas 0 60 Specific Gravity 0 5 WC Pressure Drop Length in Feet Pipe Size 3 4 1 1 1 4 1 1 2 2 10 20 30 40 50 60 70 80 90 100 150 200 206 383 614 1261 2934 147 269 418 888 2078...

Page 15: ...em or components previously used with a nonpotable water heating appliance When water is required in one part of the system at a higher temperature than in the rest of the system means such as a mixin...

Page 16: ...wet the floor If neces sary provide drain piping or use a drain hose to remove the water Hot water piping Do not use lead PVC iron or any piping which has been treated with chromates boiler seal or ot...

Page 17: ...Heater Optional Sediment Filter Water Treatment Device Shutoff Valve Type of Water Hardness Level Treatment Device Flush Frequency Type of Water Hardness Level Treatment Device Flush Frequency Soft 0...

Page 18: ...pump 4 Set the flow switch to deactivate the Air Handler when the domestic hot water flow reaches 3 GPM Adjust as necessary to prevent cycling 5 If the system requires water for space heating at a hig...

Page 19: ...e water heater Putting the redundant length of cord inside the water heater may cause electrical interference and faulty operation Disconnect Power Electrical Shock Hazard Do not turn power on until e...

Page 20: ...s shown on the right 5 Replace the front cover of the water heater 4 screws 6 Reconnect electrical power to the water heater but do not turn it on 7 Press and hold the FLOW METER ALARM SET button unti...

Page 21: ...and cause problems Be sure to hand tighten when screwing to the terminal block Power tools may cause damage to the terminal block 1 Check to make sure that the remote controller cord has plenty of sl...

Page 22: ...m a wall circuit to the pump 5 Replace the front cover Pump Wiring This feature is not available when using the Quick Con nect Multi System feature Relay connection with larger pumps 85 W 1 Locate and...

Page 23: ...lack 3 White 4 Green 5 Blue 6 Blue 1 White 2 Green 3 Red 4 Black 5 Blue 6 Blue Connecting the Quick Connect Cord to the two units 1 Turn off the power 2 Remove the front cover of the heater 4 screws 3...

Page 24: ...r a proper blue color and consistency If the flame does not appear normal the burner may need to be cleaned If the burner needs to be cleaned it must be performed by a qualified service technician Do...

Page 25: ...ower to the unit 8 The unit will now operate whenever hot water is called for If the unit will not operate follow the shutdown instructions and call a service technician Shutdown Instructions 1 Stop a...

Page 26: ...5 3 9 2 8 1 4 17 7 120VAC WIRING THROUGHWAY WIRING THROUGHWAY COLD WATER INLET WATER DRAIN VALVE WATER FILTER HOT WATER OUTLET WATER DRAIN VALVE GAS INLET 1 1 3 0 4 23 1 9 4 0 4 3 7 1 6 FLUE COLLAR A...

Page 27: ...otes on the Installation Location The remote should be installed in an easily accessible location Avoid installing in a place where water or steam can come into contact with the controller Avoid locat...

Page 28: ...ord Phillips Roundhead Wood Screw Wall Anchor 3 Remove the cover of the remote control mark the location of the screw holes and drill holes for the wall anchors 4 Insert the wall anchors screw the rem...

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