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•  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 where dust or debris will accumulate.

Dust may accumulate and reduce the performance of the unit's fan.

This can result in incomplete combustion.

•  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 Hazard. Do not install this water heater in a 

recreational vehicle or on a boat.

•  Install the water heater in a location where it is free from obstacles and 

stagnant air.

•  Consult with the customer concerning the location of installation.
•  Do not install the water heater near staircases or emergency exits.
•  Do not install the water heater where the exhaust will blow on outer walls 

or material not resistant to heat. Also consider the surrounding trees and 

animals.

The heat and moisture from the water heater may cause discoloration of 

walls and resinous materials, or corrosion of aluminum materials.

•  Do not locate the vent termination directed towards a window or any 

other structure which has glass or wired glass facing the termination.

•  Install in a location where the exhaust gas flow will not be affected by 

fans or range hoods.

•  Take care that noise and exhaust gas will not affect neighbors.   

Avoid installation on common walls as the unit will make some opera-

tional noises while it is running.

•  Avoid installation where the unit will be exposed to excessive winds.
•  Before installing, make sure that the vent termination will have the proper 

clearances according to the National Fuel Gas Code (ANSI Z223.1).

Prohibited

WARNING

CAUTION

Prohibited

State of California: The water heater must be braced, anchored or strapped to avoid moving during an 

earthquake.  Contact local utilities for code requirements in your area or call: 1-866-766-7489 and re-

quest instructions.

The Commonwealth of Massachusetts:

1) This water heater can only be used in outdoor applications if the usage is restricted to summertime 

usage exclusively.  

2) The water heater can be used for hot water only and not in a combination of domestic and space 

heating.

Содержание ecoTOUGH NRC661A-OD

Страница 1: ...y 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 p...

Страница 2: ...d below are not included with the units but may be necessary for installation Cross Recessed Head Screw Q ty Shape Part Part Shape Q ty 1 Remote Controller Cord 26ft 8m 1 Isolation Valves includes pre...

Страница 3: ...re 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 mg L of hardness acidic or otherwise impure...

Страница 4: ...animals The heat and moisture from the water heater may cause discoloration of walls and resinous materials or corrosion of aluminum materials Do not locate the vent termination directed towards a win...

Страница 5: ...the unit in a location where the unit is out of reach such as the wall of the second floor When installing the unit in a common side corridor provide a clearance of 47 1 190mm or more in front of the...

Страница 6: ...tor assembly I Clearance to service regulator vent outlet J Clearance to nonmechanical air supply inlet to building or the combustion air inlet to any other appliance K Clearance to a mechanical air s...

Страница 7: ...o not drop or apply unnecessary force to the device when installing Internal parts may be damaged and may become highly dangerous Install the unit on a vertical wall and ensure that it is level Locati...

Страница 8: ...ons or concerns CAUTION Regulators Ensure that all gas regulators used are operating properly and providing gas pressures within the specified range of the water heater being installed Excess gas inle...

Страница 9: ...length from the meter or regulator so that the following supply pressures are available even at maximum demand WARNING Natural Gas Supply Pressure Min 4 WC Max 10 5 WC LP Gas Supply Pressure Min 8 WC...

Страница 10: ...tuh NRC661A OD series 120 000 Btuh Table 2 For 8 WC 10 5 WC initial supply pressure Maximum Natural Gas Delivery Capacity 3 0 Pressure Drop Values in Table are in Cubic Feet of Gas per Hour 0 60 Speci...

Страница 11: ...nce to verify all appliances are receiving a minimum of 5 WC for NG or 8 WC for LP If all appliances are not receiving the minimum inlet pressure the gas piping system may need to be changed CAUTION P...

Страница 12: ...upply potable water may not be connected to any heating system or components previ ously used with a nonpotable water heating appliance When water is required in one part of the system at a higher tem...

Страница 13: ...r on the inlet If this is not done local boiling will occur inside the water heater causing abnormal sounds and decreasing the durability of the heat exchanger Freeze Prevention Freezing is prevented...

Страница 14: ...ng and form If this water heater will be installed in an application where the supply water is hard the water must be treated with either the Noritz H2Flow or ScaleShield or a water softener Refer to...

Страница 15: ...thorized Noritz Service Representative Any unauthorized use of this procedure may result in voiding the warranty Please contact Noritz America 866 766 7489 for additional support Procedure for Flushin...

Страница 16: ...ot disconnect the blue connector marked FLUSH for flushing on the Circuit Board 7 Turn off the circulating pump The flushing solution needs to be rinsed and cleaned out of the water heater Below is th...

Страница 17: ...nearest drain is above the water heater will require the use of a condensate pump Size the pump to allow for a maximum condensate discharge of 0 8 GPH from the water heater Horizontal runs must be slo...

Страница 18: ...n of piping and form Condensate piping to floor drain Condensate piping with pump Slope pipe downwards 1 4 per foot or more The end of the drain pipe must have an air gap 1 or more USE NON CORROSIVE M...

Страница 19: ...with unions and a pressure relief valve Notes 1 Noritz recommends the use of an Isolation Kit with the installation These kits include an integrated shut off and service valve with unions and a press...

Страница 20: ...The electrical supply required by the water heater is 120VAC at 60 Hz The power consumption may be up to 182W Use an appropriate circuit Do not disconnect the power supply when not in use When the po...

Страница 21: ...er heater back into operation press the Power On Off Button on the optional remote controller To keep the water heater off let the unit sit for 30 sec to return to the original display When changing t...

Страница 22: ...by pressing the Power On Off Button on the remote controller 2 Disconnect then reconnect electrical power to the water heater 3 Press the Flow Meter Alarm Set Button and hold it in for 2 seconds or mo...

Страница 23: ...efore opening the relief valve and make sure that water draining out of the valve will not cause any damage If the relief valve discharges periodically it may be due to thermal expansion in a closed w...

Страница 24: ...s 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 w...

Страница 25: ...mm 3 5 90mm 3 0 3 0 6 6 5 16 5mm OBLONG HOLE 4 0 5 13mm WATER DRAIN VALVE HOT WATER OUTLET CONDENSATE DRAIN WATER DRAIN VALVE COLD WATER INLET WIRING THROUGHWAY GAS INLET AC120V WATER DRAIN VALVE WATE...

Страница 26: ...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 locations where special chemi...

Страница 27: ...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...

Страница 28: ...he wall pipe containing the remote controller wires through the hole 4 Slide the junction box packing and the junction box over the remote controller wires and wall pipe protruding from the outside wa...

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