Noritz NR50-OD Installation Manual Download Page 4

4

4.

 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 can

-

not be avoided, it is recommended that a suitable drain pan, adequately drained, be installed under 

the appliance. The pan must not restrict combustion air flow.

•  Install the exhaust vent (terminal) so that there are no obstacles around the termination and so 

that exhaust can't accumulate. Do not enclose the termination with corrugated metal or other 

materials.

•  -OD type is for outdoor installation only. Never install it indoors. 

  Do not enclose the termination with corrugated metal or other materials.

•  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 block the air-supply opening, causing the performance of the 

device fan to drop and incomplete combustion to occur 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.

•  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.

Prohibited

DANGER

WARNING

CAUTION

This will cause carbon monoxide poisoning and a potential fire hazard.

[-SV type only] 

•  Carbon Monoxide Poisoning Hazard. Do not install this water heater in a 

mobile home, recreation vehicle or on a boat.

[-OD type only] 

•  Carbon Monoxide Poisoning Hazard. Do not install this water heater in a 

recreational vehicle or on a boat.

Summary of Contents for NR50-OD

Page 1: ...ge personal injury or death NORITZ AMERICA CORPORATION Installation Manual TANKLESS GAS WATER HEATER DANGER indicates an imminently hazardous situation which if not avoided will result in death or ser...

Page 2: ...t Part Shape Q ty 1 1 Remote Controller Cord 26ft 1 Isolation Valves includes pressure relief valve Pipe Cover PC 1S 1 1 Cross Recess Head Screw OD type only Owner s Guide Warranty Installation Manual...

Page 3: ...he water with approved methods in order to ensure full warranty coverage WARNING CAUTION Check the Gas Check that the rating plate indicates the correct type of gas Check that the gas supply line is s...

Page 4: ...upply opening causing the performance of the device fan to drop and incomplete combustion to occur as a result Avoid installation in places where special chemical agents e g hair spray or spray deterg...

Page 5: ...outdoor instal lation use high temperature sealant around the flue collar for rain protection Avoid installation where the unit will be exposed to excessive winds Before installing make sure that the...

Page 6: ...ore on either side of the unit to facilitate inspection If possible leave 24 or more in front of the unit to facilitate maintenance and service if necessary If possible leave 3 or more above and below...

Page 7: ...84 Maintain the following clearance from both combustible and non combustible materials indicates the distance when installing a heat insu lating board incombustible material other than metal with thi...

Page 8: ...k or paved driveway located on public property Under veranda porch deck or balcony 7 M indicates clearances required in Canada Maintain clearances in accordance with local installation codes and the r...

Page 9: ...ty air inlet into any building 3 above any forced air inlet within 10 Vent Clearances When Heater is In stalled Outdoors With a Vent Cap All clearance requirements are in accordance with ANSI Z21 10 3...

Page 10: ...For Installations in Canada clearances are as follows To windows doors gravity air inlets 36 To forced air inlets 6 3 1 1 1 Outdoor Clearances to Opening into Any Building 1 below 1 horizontally from...

Page 11: ...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 Locating Screw Holes...

Page 12: ...nt to this appliance Consult the manufacturer s instructions for the proper appliance adapter Vent Piping Noritz N Vent is suggested for the vent system If N Vent is not used a UL listed category III...

Page 13: ...section is recommended to prevent debris from falling into the water heater Install a condensation drain in the horizontal section of the venting For installations in tight spaces where there is not...

Page 14: ...t is installed in a mechanical closet provide a 24 clearance in front of the unit to the door If combustion air will be provided through a duct size the duct to provide 60 cubic feet of fresh air per...

Page 15: ...the furthest outlet and the Btuh required by everything after that section Sample Gas Line Sample Calculation Outlet A 45 Use 50 50 000 Btuh requires 1 2 Outlet B 40 65 000 Btuh requires 1 2 Section...

Page 16: ...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 121 2...

Page 17: ...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 temperature than in the rest of t...

Page 18: ...her means to en sure that the supply water pressure to the inlet of the heater does not fall below 29 psi when the maximum amount of water is being demanded Also install a pressure meter on the inlet...

Page 19: ...ent Device Shutoff Valve Type of Water Hardness Level Treatment Device Flush Frequency Type of Water Hardness Level Treatment Device Flush Frequency Soft 0 1 gpg 1 3 gpg 0 17 mg L None None None None...

Page 20: ...ommends 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 1 Noritz recommends the use of an Isolati...

Page 21: ...interference and faulty operation Disconnect Power Electrical Shock Hazard Do not turn power on until electrical wiring is finished Disconnect power before servicing Failure to do so may result in de...

Page 22: ...OFF button on the remote controller To keep the water heater off let the unit sit for 30 sec to return to the original display When setting the maximum temperature to 125 160 F 1 Turn the water heater...

Page 23: ...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 th...

Page 24: ...needs to be cleaned it must be performed by a qualified service technician Do not obstruct the flow of combustion and ventilation air The pressure relief valve must be operated once a year to ensure...

Page 25: ...s stop and follow the instruc tions 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...

Page 26: ...0 6 OBLONG HOLE HOT WATER OUTLET 3 4 COLD WATER INLET 3 4 GAS INLET 3 4 WIRING THROUGHWAYS b n k c g n s f r 4 0 5 2 0 3 x 0 5 OBLONG HOLE 4 7 2 0 3 3 2 4 3 3 4 7 3 0 3 x 0 6 OBLONG HOLE 0 4 24 5 0 4...

Page 27: ...OTTOM OFCASE BOTTOM OFCASE VIEW FROM TOP UPPER WALL MOUNT BRACKETS LOWER WALL MOUNT BRACKETS AIR INLET AIR INLET GAS INLET COLD WATER INLET WATER DRAIN VALVE HOT WATER OUTLET WATER FILTER WATER DRAIN...

Page 28: ...ING THROUGHWAYS 13 3 13 1 13 8 20 5 0 4 19 2 0 4 6 7 1 2 0 4 21 4 4 7 2 4 3 3 0 4 4 7 COLD WATER INLET 3 4 HOT WATER OUTLET 3 4 7 0 4 3 1 5 3 8 1 6 GAS INLET 1 2 10 0 3 9 7 2 2 2 VIEW FROM TOP WIRING...

Page 29: ...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 con troller Avoid loca...

Page 30: ...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...

Page 31: ...the 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 w...

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