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Gas Line Sizing for a Noritz Tankless Gas Water Heater

Maximum Natur

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 P

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

Length in Feet

Pipe

Size

Pipe

Size

1/2"

3/4"

1 1/4"

1 1/2"

2 1/2"

3 1/2"

10'

20'

30'

40'

50'

60'

70'

80'

90'

100'

125'

10'

20'

30'

40'

50'

60'

70'

80'

90'

100'

125'

150'

200'

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

200
377

775

1161
2235
3563
6299
9222

12,847

Adapted from UPC 1997

171
323
663

993

1913
3049
5391
7893

10,995

152
286
588
880

1696
2703
4778
6995
9745

138
259

532
798

1536
2449
4329
6338
8830

127
239
490
734

1413

2253
3983
5831

8123

118

111

104

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

196
378
771

1181
2205

185
346

724

1086
2047

173
322

677

1023
1921

162
307

630
976

1811

146
275

567
866

1606

132
252

511
787

1496

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 1/4"
1 1/2"

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

168
251
559

1317

153
227
509

1203

141
209

471

1114

132

194

440

1042

125

181

415
983

118

171
393

933

137
320
762

116
277
661

Maximum Capacity of Flex TracPipe in Thousands of Btuh

Liquefied Petroleum

( 0.5" WC Pressure Drop)

Length in Feet

Pipe

Size

3/4"

1 1/4"
1 1/2"

10'

20'

30'

40'

50'

60'

70'

80'

90'

100'

150'

200'

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

143

217
506

1205

129

183

438

1045

** 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 1/4"

12"

24"

36"

48"

60"

72"

180

150
290
581

1470

125
255
512

1200

106
215
442

1130

197
397
960

173
347
930

Length in Inches

Pipe

Size

1/2"
3/4"

1 1/4"

12"

24"

36"

48"

60"

72"

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.

Содержание NR111-OD

Страница 1: ...y 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 was done properly in accordance with this Installation Manual upon completion After completing installation please either place this Installation Manual in a plastic pouch and attach it to the side of the water ...

Страница 2: ...rd 10ft 1 2 Optional Accessories The accessories listed below are not included with the units but may be necessary for installation Cross Recessed Head Screw Quick Connect Cord Q ty Shape Part Part Shape Q ty 1 1 Remote Controller Cord 26ft 1 Isolation Valves includes pressure relief valve Pipe Cover PC 3S 1 1 Recess Box RB 900 1 Remote Controller Outdoor Junction Box Owner s Guide Warranty Instal...

Страница 3: ...ween the two units When connecting two units use only a single remote controller Note Connect the remote controller to only one of the units System Diagram 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 Union Make this distance as short a...

Страница 4: ... pan adequately drained be installed under the appliance The pan must not restrict combustion air flow Check the Gas Check that the rating plate indicates the correct type of gas Check that the gas supply line is sized for 250 000 Btuh for this unit Check the Power The power supply required is 120VAC at 60Hz May result in fire or electric shock Use Extreme Caution if Using With a Solar Pre Heater ...

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 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 ...

Страница 6: ... in width Provide clearance of 24 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 side corridor pro vide a clearance of 47 or more in front of the unit Set the bottom edge of the exhaust port about 84 from the corridor floor Handrail common side corridor bal...

Страница 7: ...tion air inlet to any other appliance K Clearance to 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 the current CSA B149 1 Natural Gas and Propane Installation Code 2 In accordance with the current ANSI Z223 1 NFPA 54 National Fuel Gas Code A ven...

Страница 8: ...sary 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 Mounting Structure When installing with bare hands take caution to not inflict injury Be careful not to hit electrical wiring gas or water piping while drilling holes Item CAUTION Be sure to do Mounting Bracket u...

Страница 9: ... 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 250 000 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...

Страница 10: ... 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...

Страница 11: ...stem 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 ...

Страница 12: ...er resistance Use shower heads with low pressure loss If necessary use a pump or other 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 If this is not done local boiling will occur inside the water heater causing abnormal sounds and decreasing the durab...

Страница 13: ...L Treatment 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 Noritz Isolation Valves to allow for flushing Flushing is required if a water treatment device is not installed Residential Use Treatment Guidelines Commercial Use Treatment Guidelines If this ...

Страница 14: ...e used to control the pump 3 Use an Aquastat if the water heater is not control ling the pump Set the Aquastat to 10 F below the set output temperature 4 Noritz recommends 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 Optional Expansion Tank 6 NORITZ Tankless Gas Water Heater NORITZ Tankless Ga...

Страница 15: ...he water heater Putting the redundant length of cord inside the water heater may cause electrical 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 death or serious injury from electrical shock WARNING Electrostatic discharge can affect electronic compo...

Страница 16: ...rs on the display 3 Set the upper limit of the hot water supply temperature to 125 F 130 F 135 F or 140 F using the UP and DOWN setting buttons 4 To put the water heater back into operation press the 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 When setting the maximum temperature to 125 180 F 1 Turn the water hea...

Страница 17: ...e and cause problems Be sure to hand tighten when screwing to the terminal block Power tools may cause damage to the terminal block 1 Check to make sure that the remote controller cord has plenty of slack in order to reach the external connection terminal block 2 Disconnect electrical power to the water heater 3 Remove the single screw securing the terminal block cover and then remove the cover 4 ...

Страница 18: ...om a wall circuit to the pump 5 Replace the front cover Pump Wiring This feature is not available when using the Quick Con nect 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 for the relay where it will be protected from moisture 3 Connect the pump control wires from the heater to...

Страница 19: ... 4 Green 5 Blue 6 Blue 1 Red 2 Black 3 White 4 Green 5 Blue 6 Blue 1 Red 2 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 ...

Страница 20: ...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...

Страница 21: ...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...

Страница 22: ...9 6 1 11 5 3 5 4 14 4 6 3 6 9 2 9 GAS INLET 3 4 120VAC 4 0 5 6 0 24 x 0 4 OBLONG HOLE 4 0 5 6 0 24 x 0 4 OBLONG HOLE HEIGHT OF EACH FITTINGS FROM BOTTOM OF CASE WATER OUTLET WATER INLET FLUE COLLAR WIRING THROUGHWAYS WATER DRAIN VALVE WATER FILTER HOT WATER OUTLET WATER DRAIN VALVE WIRING THROUGHWAY 120VAC COLD WATER INLET HOT WATER OUTLET 3 4 WIRING THROUGHWAYS COLD WATER INLET 3 4 VIEW FROM TOP ...

Страница 23: ...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...

Страница 24: ...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 ...

Страница 25: ...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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