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10

Maximum Natural Gas Delivery Capacity in Cubic Feet per Hour (0.60 Specific Gravity, 0.5" WC Pressure Drop) 

Contact the Gas Supplier for Btu/Cubic Ft. of the Supplied Gas.  1000 BTU/Cubic Ft. is a Typical Value

Maximum Liquefied Petroleum (Undiluted) Delivery Capacity in Thousands of Btuh (0.5" WC Pressure Drop)

Length in Feet

Length in Feet

Pipe

Size

Pipe

Size

1/2"

1/2"

3/4"

3/4"

1"

1"

1 1/4"

1 1/4"

1 1/2"

1 1/2"

2"

2"

2 1/2"

3"

3 1/2"

4"

10' (3m) 20' (6m) 30' (9m) 40' (12m) 50' (15m) 60' (18m) 70' (21m) 80' (24m) 90' (27m) 100' (30m) 125' (37.5m)

10' (3m) 20' (6m) 30' (9m) 40' (12m) 50' (15m) 60' (18m) 70' (21m) 80' (24m) 90' (27m) 100' (30m)

150' (45m) 200' (60m)

10' (3m) 20' (6m) 30' (9m) 40' (12m) 50' (15m) 60' (18m) 70' (21m) 80' (24m) 90' (27m) 100' (30m) 150' (45m) 200' (60m)

10' (3m) 20' (6m) 30' (9m) 40' (12m) 50' (15m) 60' (18m) 70' (21m) 80' (24m) 90' (27m) 100' (30m) 150' (45m) 200' (60m)

125' (37.5m)

174
363

684

1404

2103

4050
6455

11,412

16,709

23,277

119

249

470

965

1445

2784

4437

7843

11,484

15,998

96

200

377

775

1161

2235

3563

6299

9222

12,847

Adapted from UPC 1997

82

171

323

663

993

1913

3049

5391

7893

10,995

73

152

286

588

880

1696

2703

4778

6995

9745

66

138

259

532

798

1536

2449

4329

6338

8830

61

127

239

490

734

1413
2253

3983

5831

8123

56

53

50

44

118

111

104

93

222

208

197

174

456
683

1315
2096

3705

5425

7557

428

641

1234
1966

3476

5090

7091

404

605

1165
1857

3284

4808

6698

358

536

1033

1646

2910

4261

5936

275

567

1071
2205

3307

6221

189

393

732

1496

2299

4331

152
315

590

1212

1858

3465

129

267

504

1039

1559

2992

114

237

448

913

1417

2646

103

217

409

834

1275

2394

96

196

378

771

1181

2205

89

185

346

724

1086

2047

83

173

322
677

1023

1921

78

162

307
630

976

1811

69

146

275
567

866

1606

63

132

252
511

787

1496

55

112

213
440

675

1260

Maximum Capacity of Flex TracPipe  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"

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

661

R

Maximum Capacity of Flex TracPipe  in Thousands of Btuh 

Liquefied Petroleum

 

( 0.5" WC Pressure Drop) 

Length in Feet

Pipe

Size

3/4"

1"

1 1/4"

1 1/2"

2"

325

605

971

1993

4638

232

425

661

1404

3285

191

344

528

1143

2684

166

297

449
988

2327

149

265

397
884

2082

136

241

359
805

1902

126

222

330

745

1761

118

208

307

696

1647

112

197
286

656

1554

106

186
270

621

1475

87

143
217

506

1205

76

129
183

438

1045

R

** For reference only.  Please consult gas pipe manufacturer for actual pipe capacities.

** For reference only.  Please consult gas pipe manufacturer for actual pipe capacities.

Maximum Capacity for Gas Flex Connectors in Cubic Feet per Hour of 

Natural Gas

 

(0.60 Specific Gravity, 0.5" WC Pressure Drop) 

Length in Inches

Pipe

Size

1/2"

3/4"

1"

1 1/4"

12" (300mm)

24" (600mm)

36" (900mm)

48" (1200mm)

60" (1500mm)

72" (1800mm)

12" (300mm)

24" (600mm)

36" (900mm)

48" (1200mm)

60" (1500mm)

72" (1800mm)

180

150

290

581

1470

125

255

512

1200

106

215

442

1130

93

197

397
960

86

173

347
930

Length in Inches

Pipe

Size

1/2"

3/4"

1"

1 1/4"

288

240

465

930

2352

200

409

825

1920

169

344

708

1808

149

315

638

1536

137

278

556

1488

Maximum Capacity for Gas Flex Connectors in Thousands of Btuh 

Liquefied Petroleum

 

( 0.5" WC Pressure Drop) 

** For reference only.  Please consult gas pipe manufacturer for actual pipe capacities.

TracPipe® is a registered trademark of Omega Flex.

Gas Line Sizing for a Noritz Tankless Gas Water Heater

Содержание pro TOUGH NR981-OD

Страница 1: ...al carefully and follow the installation 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...

Страница 2: ...ies The accessories listed below are not included with the units but may be necessary for installation Cross Recessed Head Screw Quick Connect Cord QC 2 Q ty Shape Part Part Shape Q ty 1 1 Remote Cont...

Страница 3: ...ater temperature will become unstable as the pipe length increases Quick Connect cord Union Gas Valve Union Shutoff Valve Shutoff Valve Hot Water Cold Water Leave enough clearance around the plumbing...

Страница 4: ...ater 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 treat the...

Страница 5: ...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 loca...

Страница 6: ...f 24 600mm or more in front of the unit to facilitate inspection and repair Do install the unit such as the wall of the second floor where the unit is out of reach When installing the unit in a common...

Страница 7: ...a mechanical air supply inlet 6 ft 1 83 m L Clearance above paved sidewalk or paved driveway located on public property Clearance under veranda porch deck or balcony 7 ft 2 13 m M 1 In accordance with...

Страница 8: ...arts may be damaged and may become highly dangerous Install the unit on a vertical wall and ensure that it is level Locating Screw Holes Mounting Structure When installing with bare hands take caution...

Страница 9: ...Z223 1 Natural Gas Meter See next page for the pipe capacity charts Noritz Tankless Gas Water Heater 199 900 Btuh Clothes Dryer 35 000 Btuh Barbecue 50 000 Btuh Gas Range Stove 65 000 Btuh 10 3m 10 3...

Страница 10: ...787 1496 55 112 213 440 675 1260 Maximum Capacity of Flex TracPipe 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 2 206 383...

Страница 11: ...be connected to any heating system 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...

Страница 12: ...r resistance Use shower heads with low pressure loss If necessary use a pump or other means to ensure that the supply water pressure to the inlet of the heater does not fall below 29 PSI when the maxi...

Страница 13: ...nt Required Treatment Required Treatment Required Install Noritz Isolation Valves to allow for flushing Flushing is required if a water treatment device is not installed Suggested Suggested Install No...

Страница 14: ...tat if the water heater is not controlling the pump Set the Aquastat to 10 F 5 C below the set output temperature 4 Noritz recommends the use of an Isolation Kit with the installation These kits inclu...

Страница 15: ...ly required by the water heater is 120VAC at 60 Hz The power consumption may be up to 228W or higher if using optional accessories Use an appropriate circuit Do not disconnect the power supply when no...

Страница 16: ...ation press the Power On 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 This unit can be programmed so that it will defa...

Страница 17: ...the end of the remote controller cord to the terminal block 5 Replace the terminal block cover and install the screw previously removed in step 3 6 Reconnect electrical power to the water heater Exter...

Страница 18: ...m a wall circuit to the pump 5 Replace the front cover 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...

Страница 19: ...mp Ground wire Connector Use one of the vacant holes Connector Connecting Quick Connect Cord 2 Caution For Quick Connect Multi System Installation use part QC 2 only sold separately Quick Connect Cord...

Страница 20: ...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...

Страница 21: ...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...

Страница 22: ...ONG HOLE NR981 OD 1 8 45mm 2 2 55mm 2 2 56mm GAS INLET COLD WATER INLET HOT WATER OUTLET AIR INLET AIR INLET WIRING THROUGHWAY WATER DRAIN VALVE WATER FILTER HOT WATER OUTLET WATER DRAIN VALVE WIRING...

Страница 23: ...s 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 location...

Страница 24: ...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 25: ...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...

Страница 26: ...r In order to use this product safely read this installation manual carefully and follow the installation instructions Potential dangers from accidents during installation and use are described below...

Страница 27: ...t The value in indicates the quantity Remote Controller Mounting bracket Raised countersunk head wood screw Wall anchor Raised countersunk head screw For junction box installation Machine screw When a...

Страница 28: ...f the remote controller and the frame pull the entire decorative frame forward while pressing the sections indicated where the fingers are in the figure below If it does not come off insert a flat hea...

Страница 29: ...F 50 C To access higher temperature settings through the remote controller follow the below steps When setting the maximum temperature to 125 140 F 55 60 C 1 Turn the water heater off by pressing the...

Страница 30: ...e controller 2 Disconnect then reconnect electrical power to the water heater 3 Press the MENU Button inside the cover select Initial settings using the Buttons 4 Press the ENTER button the Initial se...

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