Noritz NC380-SV-ASME Installation Manual Download Page 2

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Included Accessories

The following accessories are included with the unit.
Check for any missing items before starting installation.

Q’ty

Shape

Part

Tapping Screw

each

Part

Shape

Q’ty

Remote Controller

(See p. 21)

Remote Controller

Cord (10ft)

Owner's Guide, Warranty,

Installation Manual

(this document)

Optional Accessories

The accessories listed below are not
included with the units, but may be necessary
for installation.

Outdoor Vent Cap

(VC-132)

Quick Connect Cord

Q’ty

Shape

Part

Shape

Q’ty

Remote Controller

Cord (26ft)

Isolation Valves

(includes pressure

relief valve)

Remote Controller

Outdoor

Junction Box

System Controller

Heat Exchanger

Inspection report

Pipe Cover

(PC-4S-SUS)

Summary of Contents for NC380-SV-ASME

Page 1: ...e customer along with the Owner s Guide WARNING If the information in this manual is not followed exactly a fire or explosion may result causing property damage personal injury or death 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 Noritz ...

Page 2: ...er s Guide Warranty Installation Manual this document 2 Optional Accessories The accessories listed below are not included with the units but may be necessary for installation Outdoor Vent Cap VC 132 1 Quick Connect Cord Q ty Shape Part Part Shape Q ty 1 1 Remote Controller Cord 26ft 1 Isolation Valves includes pressure relief valve 1 Remote Controller Outdoor Junction Box System Controller 1 1 He...

Page 3: ...gram Insulate the hot water piping to prevent heat loss Insulate and apply heating materials to the cold water supply piping to prevent heat loss and freezing of pipes when exposed to excessively cold temperatures G Quick Connect Cord Remote Controller Cord Gas Supply Piping Cold Water Supply Hot Water Remote Controller Terminal Block Cord Connector Cord Connector Union Make this distance as short...

Page 4: ...mpure treat the 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 sized for 380 000 Btuh for this unit Check the Power The power supply required is 120VAC at 60Hz Using the incorrect voltage may result in fire or electric shock Use Extreme Caution if Usi...

Page 5: ...te 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 Carbon Monoxide Poisoning Hazard Do not install this water heater in a mobile home recreation vehicle or...

Page 6: ...bove the roof line in an 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 vent termination or the vent cap in an outdoor installation will have the proper clearances according to the National Fuel Gas Code ANSI Z223 1 State of California The water h...

Page 7: ...ble leave 8 or more 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 the vent pipe to facilitate inspec tion and repair if necessary Securing of space for repair inspection 24 or more 8 or more 8 or more 3 or more If the unit will be installed in the v...

Page 8: ...alk 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 requirements of the gas supplier A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings Permitted only if...

Page 9: ...the outdoor vent cap If it is necessary to vent above the roof line in an outdoor installation also use the base of the vent cap for rain protection Vent Clearances When Heater is In stalled Outdoors With a Vent Cap 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 For Installations in Canada clearan...

Page 10: ... the unit by the upper wall mounting bracket 3 Determine the positions for the remaining four screws two for the top bracket and two for the bottom and remove the unit 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...

Page 11: ...er will be required to properly connect the vent to this appliance Consult the manufacturer s instructions for the proper appli ance adapter Vent Piping Noritz N Vent is suggested for the vent system If N Vent is not used a UL listed category III vent system must be used Follow the vent pipe manufacturer s installation instructions Not including the termination Make the vertical section of the exh...

Page 12: ... 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 enough room to in stall two elbows and a horizontal drain tee a vertical drain tee may be substituted Horizontal Vent Termination Terminate at least 12 above grade or above snow line Terminate at leas...

Page 13: ... 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 100 cubic feet of fresh air per minute Supply combustion air to the units as per the National Fuel Gas Code ANSI Z223 1 and in Canada in accordance with NSCNGPIC Combustion Air Openings supplying indoor air 28 14 28 14 ...

Page 14: ... 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 Tankless Gas Water Heater 380 000 Btuh Clothes Dryer 35 000 Btuh Barbecue 50 000 Btuh Gas Range Stove 65 000 Btuh 10 10 10 10 5 5 5 5 Gas Fireplace 25 000 Btuh Instructions 1 Size each outlet branch starting from the furthest using the Btuh required and the length...

Page 15: ... in Cubic 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 121 218 334 723 1698 105 188 284 625 1472 94 168 251 559 1317 86 153 227 509 1203 80 141 209 471 1114 75 132 194 440 1042 71 125 181 415 983 67 118 171 393 933 55 94 137 320 762 48 82 116 277...

Page 16: ...ystem 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 mixing valve shall be installed to temper the water to reduce the scald hazard Installation and service must be performed by a qualified plumber In the Commonwealth of Massachusetts this product must be...

Page 17: ... 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 other chemicals The longer the piping the greater the heat loss Try to make the piping as short as possible Use mixing valves with low water resistance Use shower heads with low pressure loss If necess...

Page 18: ... to Water 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 1 gpg 1 3 gpg 0 17 mg L None None None None None None Slightly Hard 17 51 mg L None None Moderately Hard Hard 3 7 gpg 51 120 mg L ScaleShield Once a Year Once a Year Twice a Year Once a Year...

Page 19: ...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 higher temperature than for other uses means such as a mixing valve shall be provided to temper the water for the other uses to help prevent scald ing 6 Expansion tank required if a backflow preventer is...

Page 20: ...f cord inside the water heater may cause electrical interference and faulty operation Ground To prevent electrical shock provide a ground with resistance less than 100 An electrician should do this work A grounding screw is provided on the back in the junction box Do not connect the ground to the city water or gas piping Do not tie the ground to a tele phone line Breaker Installation Mount a devic...

Page 21: ... be 99 3 The up and down buttons can be used to change the maintenance writer item number 4 Choose a temperature from the chart below and set the 14 and 15 maintenance writers according to the chart Pressing the Flow Meter Alarm Set button for 0 5 seconds will switch the indicated item number from OFF to ON or ON to OFF If the Priority lamp is flashing when an item number is displayed this indicat...

Page 22: ...e purchased 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 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 30...

Page 23: ...which 120VAC will be supplied directly from a wall circuit to the pump 5 Replace the front cover Supplies Power for Circulating Pump Use a Relay for Larger Pumps Pump Wiring This feature is not available when using the Quick Connect Multi System feature Relay connection with larger pumps 85 W 1 Locate and prepare the pump control wires as described above 2 Choose a suitable installation location f...

Page 24: ...Black 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 Pass the Quick Connect Cord through the wiring throughway and into the unit 4 Plug the connector on the Quick Connect Cord to the receptacle inside the unit 5 Attach the ground wire of the Quick Con...

Page 25: ...or 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 not obstruct the flow of combustion and ventilation air The pressure relief valve must be operated once a year to ensure that it is functioning properly and there is no obstruction Turn the power off...

Page 26: ...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 val...

Page 27: ...N VALVE WATER DRAIN VALVE WIRING THROUGHWAYS GAS INLET COLD WATER INLET WATER FILTER HOT COL GAS 16 Multi System A Installation without a recirculation system Insulate or apply heating materials to both the cold water supply piping and the hot water piping to prevent freezing during cold weather and to prevent heat loss through the piping G 1 1 4 2 1 1 4 2 Unit No 6 Unit No 2 Unit No 1 System Cont...

Page 28: ... 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 Connector Expansion Tank Unit 6 Unit 2 Unit 1 System Controller Size the pump to provide at least 2 GPM 10 feet of head piping losses through the system Check the maintenance monitors on the unit to make sur...

Page 29: ...ontrol When installing 2 pumps in 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 5 GPM Install the plumbing so that a change in flow will not damage the pump Thermostat System select connector Connect to the Sto rage system connector Pump Control Wires use external relay Also disconnect this connecto...

Page 30: ...12345678 B5 B5 System Controller No 5 No 4 No 3 No 2 Remote Control terminal block Remote control terminal block System select connectors Disconnect 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 Disconnectforsystemcontroller The remote controller terminal locati...

Page 31: ...Notes 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 locations where special chemical agents e g benzene fatty and oily deter gents are used Avoid outdoor installation or installation in an indoor location where it will be exposed to direct sunlight Connect...

Page 32: ...cord 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 remote control to the wall and replace the cover Remote Controller Cord Wall Packing take off the paper Remote Control Wires Rear Side of Remote Controller ...

Page 33: ...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 wall Wall packing Wall pipe Take out the pipe about 3 4 from the wall Junction Box Box Nut Junction Box Packing Take off the paper 5 Slide the box nut over the remote controller wires and screw it onto...

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Noritz NC380-SV-ASME, Installation Manual

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