Noritz N-0531S Manuel utilisateur

NORITZ America Corporation

Gas Water Heater

Field Manual

The materials in this manual are presented for reference

only. For further assistance, contact Noritz Technical

Support at 866-766-7489.

be changed without prior notice.

Do not short circuit any safety

device on this appliance

Rev: Jan, 2009

Contents

Important Safety Information .........................................................................................................................................

1. Features ...........................................................................................................................................................................

.....................................................................................................................................

3. Dimensions ....................................................................................................................................................................

4. Components .................................................................................................................................................................

5. Troubleshooting ..........................................................................................................................................................

Error Codes and Checkpoints ............................................................................................................................

Remote Controller .................................................................................................................................................

Displaying Maintenance Monitor ....................................................................................................................

Maintenance Monitor List ...................................................................................................................................

Gas Line Requirements ........................................................................................................................................

Periodic Inspection ................................................................................................................................................

Periodic Maintenance ..........................................................................................................................................

Changing Default Temperature Setting .........................................................................................................

6. Installation Check .......................................................................................................................................................

N-0531S (-OD)

N-0631S (-OD)

N-0751M (-DV, -OD, -DVC)

N-0931M (-DV, -OD)

N-0841MC (-DV)

N-1321M-ASME

Neutralizer Life Cycle Warning/Replacement Procedures....................................................................... 48

Draining Water for Maintenance or Freeze Protection ............................................................................

Important Safety Information

To prevent damage to property and injury to the user, the icons below warn of

varying levels of risk.

Caution

Warning Ignoring this indication will cause an immediate danger of death or

serious injury.

Ignoring this indication may result in death or serious injury.

Prohibited.

1. Safety Tips for Service

W ear the appropriate clothing and protective gear:

In order to prevent injury or accident, wear a protective helmet, safety boots and a lifting

belt whenever necessary.

Caution

Use only the appropriate tools and parts:

Warning Only use replacement parts manufactured by Noritz for this model as listed in the

Installation Manual Parts List for service on this unit. Use appropriate tools.

When servicing:

Warning Disconnect the power supply during maintenance and repairs to reduce the risk of

electric shock. If it is necessary to have the electricity connected during repairs, use

extreme caution not to touch parts that may cause a shock.

Do not short circuit any safety device on this appliance:

If a safety device is not functioning properly, replace the part. Do not under any

circumstances short circuit the part.

Exhaust and gas leakage caution:

Warning Always check for leaks when installing or modifying the exhaust vent or gas piping.

2. Post-Service Checks

Check parts for leaks:

Caution

If the unit is installed indoors, check that the ue collar and vent pipe are installed

correctly and that they are in good condition. Conrm that there are no gas, water, or

exhaust leaks regardless of whether the service performed could have caused them.

Check for combustibles:

Caution After service or maintenance is completed, check that there are no combustibles in

the vicinity of the unit.

Check insulation resistance:

Warning After service or maintenance is completed, measure the resistance between the elec-

trical wires and ground. If it is less than 10M , there is a risk of electrical shock.

Properly reconnect the power supply:

Warning

Do not attempt to modify or alter the unit. This will cause a re hazard and a risk of

electrical shock.

Conrm that there are no gas, water, or exhaust leaks regardless of whether the

service performed could have caused them.

Conrm that the power supply has been reconnected properly after service or main-

tenance is completed. Also conrm that there is no dust or other obstacles that might

cause an electric shock or a re hazard.

Modication of the unit is prohibited:

1. Features

1. Quick Connect Multi System (For N-0751M series, N-0931M series, N-0841MC series, and N-1321M-ASME only)

Allows the simple installation of up to 2 units linked together using a Quick Connect Cord

CCP Valve

System Controller

2. Secondary Recirculation Pump in a Multi-System (For N-0931M series, N-0841MC series, and N-1321M-ASME only)

T wo recirculation pumps can be connected to the multi-system controller to provide a rotational pump system.

The multi-system controller will rotate the run time of each pump to increase pump life and also provide a backup

should one pump fail.

3. Multi-System Rotation Timing (For N-0931M series, N-0841MC series, and N-1321M-ASME only)

(1) In a multi-system installation, the system controller rotates the primary unit every 8 hours of accumulated

combustion time.

of up to 16 hours).

(3) Rotation is made every 24 hours, regardless of the burn, to ensure even wear.

4. Maximum Remote Controller Length (Only one remote controller can be connected.)

Remote controller (1 unit): Cord can be extended up to 300' with 18AWG wire.

* Note: In a Quick Connect Multi-System, only one remote controller will be installed.

(For N-0751M series, N-0931M series, N-0841MC series, and N-1321M-ASME only)

5. Temperature Lockout Function

The remote controller can be set to restrict the maximum allowable temperature setting for added safety.

See page 55-56 for details.

6. Elevation Adjustment

of the unit. No additional equipment or adjustments are necessary. See the "Installation Manual" for details.

Not required

Cold water

Gas

Hot water

Condensate

Combustion gas

About 400°F

tsuahxEtsuahxE

About 120°F

Conventional

type

Condensing

Tankless Gas

Water Heater

Water is heated

using the exhaust

gas which is about

400 °F

Primary heat exchanger

Secondary heat exchanger

Neutralizer

Combustion gas

About 400°F

The condensing tankless gas water heater

discharges condensate.

When heat from the exhaust gas is collected within the

secondary heat exchanger, condensation occurs from

moisture in the exhaust gas and the resulting water is

discharged from the drain pipe (approx. 2 gallons/hour

(GPH) maximum). It is not a water leak. Do not plug or

block the drain line as it must always be allowed to freely

Drain pipe

(Installation example)

The condensing tankless gas water heater

tends to show white steam.

After the exhaust gas passes through the secondary heat

exchanger, it becomes low in temperature and moisture

rich which tends to produce steam at the vent discharge

terminal. This is a normal occurrence.

Condensate

comes out

from here.

During combustion, white

steam may often be seen.

This is normal.

Overview of Condensing Tankless Gas Water Heater

This water heater is a high eciency, fully condensing appliance. Unlike a traditional tankless water heater, a

condensing type captures heat from the exhaust gas and uses it to preheat the incoming cold water as it passes

through the secondary heat exchanger as illustrated below.

N-0531S

Indoor/ Outdoor, Wall Mounted

Direct Ignition

15-150 psi

0.5 GPM

20.5"(Height) x 13.8"(Width) x 6.7"(Depth)

36 lbs.

0.2 Gallon

3/4"

120 VAC (60Hz)

NG : 54W

LP : 59W

Freeze Prevention 141W

Stainless Steel

Copper Sheeting, Copper Tubing

Flame Rod, Thermal Fuse, Lightning Protection

Device (ZNR), Overheat Prevention Device,

Freezing Prevention Device, Fan Rotation Detector

Item

Model Name

Type

Ignition

Operating Pressure

Minimum Flow Rate

Dimensions

Weight

Water Holding Capacity

Accessories

Installation

Air Supply/Exhaust

Connection Sizes

Power Supply

Materials

Water Inlet

Hot Water Outlet

Gas Inlet

Supply

Consumption

Casing

Flue Collar

Heat Exchanger

Safety Devices

N-0531S-OD

NG : 51W

LP : 52W

Freeze Prevention 141W

Anchoring Screws

Outdoor, Wall Mounted

N-0531S (-OD)

Item

Gas Consumption

Maximum Hot Water Capacity

Capacity Range

Temperature Settings

(Using the remote controller)

Default Temperature Options

NG : 140,000 btuh, LP : 140,000 btuh

45°F Rise

100-150°F (In 5°F intervals), 160°F (12 Options)

Maximum Performance

Minimum Performance

Performance

NG : 20,000 btuh, LP : 20,000 btuh

5.3 Gal./min.

0.5-6.6 Gal./min.

120, 130, 140

°F

(Original is 120

°F

)

N-0531S N-0531S-OD

Po wer Vented

N-0631S

Indoor/ Outdoor, Wall Mounted

Direct Ignition

15-150 psi

0.5 GPM

23.6"(Height) x 13.8"(Width) x 6.7"(Depth)

41 lbs.

0.2 Gallon

3/4"

120 VAC (60Hz)

NG : 59W

LP : 66W

Freeze Prevention 141W

Stainless Steel

Copper Sheeting, Copper Tubing

Flame Rod, Thermal Fuse, Lightning Protection

Device (ZNR), Overheat Prevention Device, Freezing

Prevention Device, Fan Rotation Detector

Item

Model Name

Type

Ignition

Operating Pressure

Minimum Flow Rate

Dimensions

Weight

Water Holding Capacity

Accessories

Installation

Air Supply/Exhaust

Connection Sizes

Power Supply

Materials

Water Inlet

Hot Water Outlet

Gas Inlet

Supply

Consumption

Casing

Flue Collar

Heat Exchanger

Safety Devices

N-0631S-OD

NG : 46W

LP : 50W

Freeze Prevention 141W

Anchoring Screws

Item

Gas Consumption

Maximum Hot Water Capacity

Capacity Range

Temperature Settings

(Using the remote controller)

Default Temperature Options

NG : 180,000 btuh, LP : 180,000 btuh

45°F Rise

100-150°F (In 5°F intervals), 160°F (12 Options)

Maximum Performance

Minimum Performance

Performance

NG : 25,000 btuh, LP : 25,000 btuh

6.3 Gal./min.

0.5-7.1 Gal./min.

120, 130, 140

°F

(Original is 120

°F

)

N-0631S N-0631S-OD

Outdoor, Wall Mounted

N-0631S (-OD)

Po wer Vented

N-0751M

Indoor/ Outdoor, Wall Mounted

Po wer Vented

Direct Ignition

15-150 psi

0.5 GPM

23.6"(Height) x 13.8"(Width) x 9.4"(Depth)

47 lbs.

0.2 Gallon

3/4"

120 VAC (60Hz)

NG : 62W LP : 75W Freeze Prevention 145W

Stainless Steel

Copper Sheeting, Copper Tubing

Flame Rod, Thermal Fuse, Lightning Protection

Device (ZNR), Overheat Prevention Device, Freezing

Prevention Device, Fan Rotation Detector

Remote Controller, Remote Controller Cord,

Anchoring Screws

Performance

Item

Model Name

Type

Ignition

Operating Pressure

Minimum Flow Rate

Dimensions

Weight

Water Holding Capacity

Accessories

Installation

Air Supply/Exhaust

Connection Sizes

Power Supply

Materials

Water Inlet

Hot Water Outlet

Gas Inlet

Supply

Consumption

Casing

Flue Collar

Heat Exchanger

Safety Devices

Item

Gas

Consumption

Maximum Hot Water Capacity

Capacity Range

Temperature Settings

Default Temperature Options

45°F Rise 7.5 Gal./min.

0.5-9.8 Gal./min.

100-150°F (In 5°F intervals),

160, 170, 180°F (In 10°F intervals) (14 Options)

120,130,140,180°F (Original is 120°F)

Maximum Performance

199,900 btuh

Minimum Performance

12,000 btuh

N-0751M

N-0751M-DV

Indoor, Wall Mounted

Po wer Vented

Direct Ignition

15-150 psi

0.5 GPM

24.2"(Height) x 18.3"(Width) x 9.4"(Depth)

54 lbs.

0.2 Gallon

3/4"

120 VAC (60Hz)

NG : 85W LP : 100W Freeze Prevention 161W

Stainless Steel

Copper Sheeting, Copper Tubing

Flame Rod, Thermal Fuse, Lightning Protection

Device (ZNR), Overheat Prevention Device, Freezing

Prevention Device, Fan Rotation Detector

Remote Controller, Remote Controller Cord,

Anchoring Screws

Performance

Item

Model Name

Type

Ignition

Operating Pressure

Minimum Flow Rate

Dimensions

Weight

Water Holding Capacity

Accessories

Installation

Air Supply/Exhaust

Connection Sizes

Power Supply

Materials

Water Inlet

Hot Water Outlet

Gas Inlet

Supply

Consumption

Casing

Flue Collar

Heat Exchanger

Safety Devices

Item

Gas

Consumption

Maximum Hot Water Capacity

Capacity Range

Temperature Settings

Default Temperature Options

45°F Rise 7.5 Gal./min.

0.5-9.8 Gal./min.

100-150°F (In 5°F intervals),

160, 170, 180°F (In 10°F intervals) (14 Options)

120,130,140,180°F (Original is 120°F)

Maximum Performance

199,900 btuh

Minimum Performance

12,000 btuh

Specication

N-0751M-OD

Outdoor, Wall Mounted

Power Vented

Direct Ignition

15-150 psi

0.5 GPM

23.6"(Height) x 13.8"(Width) x 9.4"(Depth)

47 lbs.

0.2 Gallon

3/4"

120 VAC (60Hz)

NG : 64W LP : 77W Freeze Prevention 145W

Zincied Steel Plate/Polyester Coating

Stainless Steel

Copper Sheeting, Copper Tubing

Flame Rod, Thermal Fuse, Lightning Protection

Device (ZNR), Overheat Prevention Device, Freezing

Prevention Device, Fan Rotation Detector

Remote Controller, Remote Controller Cord,

Anchoring Screws

Performance

Item

Model Name

Type

Ignition

Operating Pressure

Minimum Flow Rate

Dimensions

Weight

Water Holding Capacity

Accessories

Installation

Air Supply/Exhaust

Connection Sizes

Power Supply

Materials

Water Inlet

Hot Water Outlet

Gas Inlet

Supply

Consumption

Casing

Flue Collar

Heat Exchanger

Safety Devices

Item

Gas

Consumption

Maximum Hot Water Capacity

Capacity Range

Temperature Settings

Default Temperature Options

45°F Rise 7.5 Gal./min.

0.5-9.8 Gal./min.

100-150°F (In 5°F intervals),

160, 170, 180°F (In 10°F intervals) (14 Options)

120,130,140,180°F (Original is 120°F)

Maximum Performance

199,900 btuh

Minimum Performance

12,000 btuh

N-0751M-OD

Specication

N-0751M-DVC

Indoor, Wall Mounted

Po wer Vented

Direct Ignition

15-150 psi

0.5 GPM

23.6"(Height) x 13.8"(Width) x 10.2"(Depth)

55 lbs.

0.2 Gallon

3/4"

120 VAC (60Hz)

NG : 108W LP : 96W Freeze Prevention 161W

Zincied Steel Plate/Polyester Coating

Stainless Steel

Copper Sheeting, Copper Tubing

Flame Rod, Thermal Fuse, Lightning Protection

Device (ZNR), Electric Leakage Prevention Device

(GFCI), Overheat Prevention Device, Freezing

Prevention Device, Fan Rotation Detector

Anchoring Screws

Performance

Item

Model Name

Type

Ignition

Operating Pressure

Minimum Flow Rate

Dimensions

Weight

Water Holding Capacity

Accessories

Installation

Air Supply/Exhaust

Connection Sizes

Po wer Supply

Materials

Water Inlet

Hot Water Outlet

Gas Inlet

Supply

Consumption

Casing

Flue Collar

Heat Exchanger

Safety Devices

Item

Gas

Consumption

Maximum Hot Water Capacity

Capacity Range

Temperature Settings

Default Temperature Options

.nim/.laG5.7esiRF°54

0.5-9.8 Gal./min.

100-150°F (In 5°F intervals),

160, 170, 180°F (In 10°F intervals) (14 Options)

120,130,140,180°F (Original is 120°F)

Maximum Performance

199,900 btuh

Minimum Performance

11,000 btuh

N-0751M-DVC

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