Noritz N-0931M-DV Installation Manual Download Page 25

25

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 electrical power to the unit.
3. Do not attempt to light the burner by hand.
4. Turn the gas control manual valve (external to the unit) clockwise to the off position.
5. Wait five minutes to clear out any gas.  If the smell of gas remains, stop, and follow the instructions

on page 3 of Owner's Guide.

6. Turn the gas control manual valve counterclockwise to the on position.
7. Turn on electric power 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 any water demand.
2. Turn off electric power.
3. Turn the gas control manual valve clockwise to the off position.

Should overheating occur, or the gas supply fail to shut off, turn off the manual control valve to the appliance.

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.

Freezing is not covered by the warranty.

CAUTION

A fire or explosion may result if these instructions are not followed, which may cause lose of
life, personal injury or property damage.

WARNING

Summary of Contents for N-0931M-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: ...te 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 Terminal VT4 TL...

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: ...solar pre heater can lead to unpredictable output temperatures and possibly scalding If absolutely necessary use mixing valves to ensure output temperatures do not get to scalding levels Do not use a...

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: ...the 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 0931M DV 250 000 Btuh Clothes Dryer 35 000 Btuh Barbecu...

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: ...ulation pump For pumps larger than 85W a relay connection must be used If the Pump Control Signal is not used an Aquastat may be used to control the pump 3 Use an Aquastat if the water heater is not c...

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: ...e controller 2 Disconnect electrical power to the water heater 3 Remove the front cover of the water heater 4 screws 4 Connect WATER TEMPERATURE ADJUSTMENT CONNECTOR tag connector to 180 F tag connect...

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: ...1 4 26 2 1 1 3 9 4 3 7 23 1 0 4 0 4 1 6 120VAC WIRING THROUGHWAY WIRING THROUGHWAYS COLD WATER INLET WATER DRAIN VALVE WATER FILTER HOT WATER OUTLET WATER DRAIN VALVE GAS INLET 17 7 AIR INLET FLUE CO...

Page 27: ...Pipe Hot Water Return Line Size the water supply piping to allow for maximum flow rates of the units Hot Water 1 1 4 2 Water supply Also disconnect this connector on units 2 6 Disconnect this Connecto...

Page 28: ...n parallel The system controller will stop the units from heating when the tank is up to temperature and the unit will cut the flow through it to 2 6 GPM Install the plumbing so that a change in flow...

Page 29: ...onnect this Connector Disconnect this Connector Disconnect for system controller Disconnect for system controller Disconnect this Connector Remote Controller Cord PCB Power PCB PCB Power PCB Disconnec...

Page 30: ...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 31: ...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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