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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 

T

ypical V

alue

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 

T

racPipe  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 

T

racPipe  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.

Tr

acPipe® is a registered trademark of Omega Flex.

Gas Line Sizing for a Noritz 

Tankless Gas Water Heater

Содержание NC1991-OD

Страница 1: ...uctions 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 Inst...

Страница 2: ...ed below are not included with the units but may be necessary for installation Quick Connect Cord QC 2 Q ty Shape Part Part Shape Q ty 1 1 Remote Controller Cord 26ft 8m 1 each Isolation Valves includ...

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: ...e 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 maximum amount...

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: ...te controller is removed 185 F 85 C 140 F 60 C 135 F 57 C 120 F 50 C To change the default temperature adjust the dip switches as described below The default temperature is 120 F 50 C 1 Disconnect ele...

Страница 17: ...ode 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...

Страница 18: ...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...

Страница 19: ...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 20: ...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 21: ...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 22: ...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 23: ...NG HOLE NC1991 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 24: ...nutes of connecting electrical power before turning on the Power On Off Button press the or button on the remote controller and hold until the display blinks 99 If 99 does not blink on the remote cont...

Страница 25: ...is system will make hot water more quickly available to remote fixtures The pump will circulate water through the loop until the entire loop is warm and then the system controller will turn off the pu...

Страница 26: ...tat Pump Control Wires use external relayU Unit 1 Set Yes for the question Start pump rotation in system settings See SC 301 6M Installation Manual When installing 2 pumps in parallel Set Yes for the...

Страница 27: ...PCB Power PCB B5 B5 System Controller No 5 No 4 No 3 No 2 Remote Control terminal block Remote control terminal block Remote Controller Cord PCB Power PCB PCB Power PCB Multi System Wiring Use SC 301...

Страница 28: ...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 Clos...

Страница 29: ...List The value in indicates the quantity Remote Controller Mounting bracket Round countersunk head wood screw Wall anchor Raised countersunk head screw For junction box installation Machine screw Whe...

Страница 30: ...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...

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