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12

GAS PIPING

Contact your local gas service company to ensure that adequate
gas service is available and to review applicable installation codes
for your area.

Size the main gas line in accordance with Table 3. The figures
shown are for straight lengths of pipe at 0.5 in. W.C. (125Pa)
pressure drop, which is considered normal for low pressure systems
Note that fittings such as elbows and tees will add to the pipe
pressure drop.

  CAUTION

DO NOT USE FLEXIBLE GAS PIPING.

TABLE 3

MAXIMUM CAPACITY OF PIPE IN CUBIC FEET OF GAS PER HOUR

(Based upon a Pressure Drop of 0.5 inch Water Column

and 0.6 Specific Gravity Gas and max. gas pressure of 0.5 psig)

 

 WARNING

THE HEATER IS NOT INTENDED FOR OPERATION AT HIGHER
THAN 11.0" WATER COLUMN (2.74 Kpa) FOR NATURAL GAS
AND 14.0" W.C. (3.49kPa) FOR PROPANE GAS SUPPLY
PRESSURE. HIGHER  GAS SUPPLY PRESSURES REQUIRE
SUPPLEMENTAL REDUCING SERVICE REGULATION.
EXPOSURE TO HIGHER GAS SUPPLY PRESSURE MAY CAUSE
DAMAGE TO THE GAS CONTROLS WHICH COULD RESULT IN
FIRE OR EXPLOSION. IF OVERPRESSURE HAS OCCURRED
SUCH AS THROUGH IMPROPER TESTING OF GAS LINES OR
EMERGENCY MALFUNCTION OF THE SUPPLY SYSTEM THE
GAS VALVE MUST BE CHECKED FOR SAFE OPERATION. MAKE
SURE THAT THE OUTSIDE VENTS ON THE SUPPLY
REGULATORS AND THE SAFETY VENT VALVES ARE
PROTECTED AGAINST BLOCKAGE. THESE ARE PARTS OF THE
GAS SUPPLY SYSTEM, NOT THE HEATER. VENT BLOCKAGE
MAY OCCUR DURING ICE STORMS.

IT IS IMPORTANT TO GUARD AGAINST GAS VALVE FOULING
FROM CONTAMINANTS IN THE GAS WAYS. SUCH FOULING
MAY CAUSE IMPROPER OPERATION, FIRE OR EXPLOSION.

IF COPPER SUPPLY LINES ARE USED THEY MUST BE
INTERNALLY TINNED AND CERTIFIED FOR GAS SERVICE.

BEFORE ATTACHING THE GAS LINE BE SURE THAT ALL GAS
PIPE IS CLEAN ON THE INSIDE.

TO TRAP ANY DIRT OR FOREIGN MATERIAL IN THE GAS
SUPPLY LINE, A DIRT LEG (SOMETIMES CALLED A SEDIMENT
TRAP OR DRIP LEG) MUST BE INCORPORATED IN THE PIPING
(SEE FIG. 14). THE DIRT LEG MUST BE READILY ACCESSIBLE
AND NOT SUBJECT TO FREEZING CONDITIONS. INSTALL IN
ACCORDANCE WITH RECOMMENDATIONS OF SERVING GAS
SUPPLIERS. REFER TO THE NATIONAL FUEL GAS CODE.

FIGURE 14

CONNECTION OF GAS PIPE

1. When connecting gas pipe to unit, apply wrench to flange only.

Note:  Do not use wrench on gas valve or gas bracket.

2. PERFORM THE GAS LEAK TEST ANY TIME WORK IS DONE

ON A GAS SYSTEM TO AVOID THE POSSIBILITY OF FIRE
OR EXPLOSION WITH PROPERTY DAMAGE, PERSONAL
INJURY OR LOSS OF LIFE.

The Gas Leak Test is performed as follows:  Paint pipe connections
upstream of gas control with a rich soap and water solution to test
for leaks before operating main burner. Bubbles indicate gas leak.
To stop leak, tighten pipe connections. After piping connections
are checked, turn on main burner. With main burner in operation,
paint pipe joints (including flanges), pilot gas tubing connections
and control inlet and outlet with rich soap and water solution.
Bubbles indicate gas leak. To stop leak, tighten flange screws, joints
and pipe connections. Replace part if leak can’t be stopped.

To prevent damage, care must be taken not to apply too much
torque when attaching gas supply pipe to gas valve inlet.

Apply joint compounds (pipe dope) sparingly and only to the male
threads of pipe joints. Do not apply compound to the first two
threads. Use compounds resistant to the action of liquefied
petroleum gases.

DISCONNECT THE APPLIANCE AND ITS MANUAL GAS
SHUTOFF VALVE FROM THE GAS SUPPLY PIPING SYSTEM
DURING ANY SUPPLY PRESSURE TESTING EXCEEDING
1/2 PSIG (3.45Kpa). GAS SUPPLY LINE MUST BE CAPPED
WHEN DISCONNECTED FROM THE HEATER. FOR TEST

LENGTH

NORMAL IRON PIPE SIZES (INCHES)

IN

INPUT IN THOUSANDS BTU/HR

 FEET

1/2"

3/4"

1"

1 1/4" 1 1/2"

2"

2 1/2"

3"

4"

10

175

360

680

1400

2100

3960

6300

11000

23000

20

120

250

485

950

1460

2750

4360

7700

15800

30

97

200

375

770

1180

2200

3520

6250

12800

40

82

170

320

660

990

1900

3000

5300

10900

50

73

151

285

580

900

1680

2650

4750

9700

60

66

138

260

530

810

1520

2400

4300

8800

70

61

125

240

490

750

1400

2250

3900

8100

80

57

118

220

460

690

1300

2050

3700

7500

90

53

110

205

430

650

1220

1950

3450

7200

100

50

103

195

400

620

1150

1850

3250

6700

125

44

93

175

360

550

1020

1650

2950

6000

150

40

84

160

325

500

950

1500

2650

5500

175

37

77

145

300

460

850

1370

2450

5000

200

35

72

135

280

430

800

1280

2280

4600

LENGTH

NORMAL IRON PIPE SIZES (INCHES)

IN

INPUT IN KW

METERS 1/2"

3/4"

1"

1 1/4" 1 1/2"

2"

2 1/2"

3"

4"

3.0

51

105

199

410

615

1160

1845

3221

6735

6.1

35

73 142

278

428

805

1277

2255

4626

9.1

28

59

110

225

346

644

1031

1830

3748

12.2

24

50

94

193

290

556

878

1552

3192

15.2

21

44

83

170

264

492

776

1391

2840

18.3

19

40

76

155

237

445

703

1259

2577

21.3

18

37

70

143

220

410

659

1142

2372

24.4

17

35

64

135

202

381

600

1083

2196

27.4

16

32

60

126

190

357

571

1010

2108

30.5

15

30

57

117

182

337

542

952

1962

38.1

13

27

51

105

161

299

483

864

1757

45.7

12

25

47

95

146

278

439

776

1610

53.3

11

23

42

88

135

249

401

717

1464

61.0

10

21

40

82

126

234

375

688

1347

Содержание CYCLONE Xi BTH 400A

Страница 1: ...ETY PLEASE READ THOROUGHLY BEFORE INSTALLINGAND USING THIS APPLIANCE INSTALLATION OPERATION SERVICE MAINTENANCE LIMITED WARRANTY WARNING If the information in these instructions is not followed exactl...

Страница 2: ...SA B149 1 and CSA C22 1 The former is available from the Canadian Standards Association 8501 East Pleasant Valley Road Cleveland OH 44131 and both documents are available from the National Fire Protec...

Страница 3: ...iagnostic Controller 15 Gas Value LEDs Flashing 15 Error Codes 16 Fault Conditions 16 No Incoming Line Voltage 16 No Low Voltage 16 Temperature Probe Fault 16 E C O Switch Open 17 Control Bad 17 Combu...

Страница 4: ...ter temperature to exceed the thermostat setting The water temperature would continue to rise until high limit switch operation Contact your dealer or servicer if continued high limit switch operation...

Страница 5: ...cover the instruction manual Keep it on the side of the water heater or nearby for future reference Do obtain new labels from A O Smith for placement on the blanket directly over the existing labels...

Страница 6: ...of all appliances in the enclosure If horizontal ducts are used each opening shall have a free area of not less than one square inch per 2000 Btuh 1 102mm2 kW of the total input of all appliances in t...

Страница 7: ...VER PUBLIC AREA WHERE CONDENSATE OR VAPOR CAN CAUSE NUISANCE OR HAZARD ON DIRECT VENT INSTALLATIONS INLET VENT HOOD MUST BE LOCATED 1 30 5cm MINIMUM FROM ANY OPENING IN BUILDING ON DIRECT VENT INSTALL...

Страница 8: ...T TERMINALS AN INTAKE VENT TERMINAL AND AN EXHAUST VENT TERMINAL THE INTAKE VENT TERMINAL IS A 3 45 PVC ELBOW WITH A DOME SHAPE SCREEN AND THE EXHAUST VENT TERMINAL IS A 3 45 PVC ELBOW WITH A MESH WIR...

Страница 9: ...TERMINAL INTAKE VENT TERMINAL FIGURE 10 VERTICAL VENT TERMINAL INSTALLATION IMPORTANT WHEN TERMINATING THROUGH A ROOF THE FOLLOWING SPECIFICATIONS PERTAINING TO TERMINAL LOCATION MUST BE FOLLOWED 1 Pr...

Страница 10: ...The fittings other than the TERMINATIONS should be equivalent to PVC DWV fittings meeting ASTM D 2665 Use CPVC fittings ASTM F 438 for CPVC pipe and ABS fittings ASTM D 2661 3311 for ABS pipe If CPVC...

Страница 11: ...SWITCH SEE FIGURE 13 The Blocked Outlet Prover Switch is set up to shut the unit off when a build up of positive pressure in the exhaust vent pipe occurs This switch is a positive pressure switch that...

Страница 12: ...DAMAGE PERSONAL INJURY OR LOSS OF LIFE The Gas Leak Test is performed as follows Paint pipe connections upstream of gas control with a rich soap and water solution to test for leaks before operating m...

Страница 13: ...be used in conjunction with this appliance shall also be installed with a properly sized rated and approved temperature ANSI and pressure ASME relief valve s This relief valve shall comply with the st...

Страница 14: ...OLTAGE LEVEL OR HAS AN APPLIANCE WHICH GENERATES EMF OF RFI INTERFERENCE CAN CAUSE THE CONTROLLER TO MALFUNCTION A HIGH QUALITY POWER CONDITIONER MUST BE INSTALLED IF THE ABOVE CONDITIONS EXIST MALFUN...

Страница 15: ...Dirty burner 10 Clean burner be closed and the blower will continue to run for approximately 10 seconds The control will then return to step 2 9 If a flame is confirmed the control will enter the heat...

Страница 16: ...Not Implemented h s 240 Executed State 4 Not Implemented h s 210 Executed State 10 Not Implemented h s 213 Executed State 13 Not Implemented h s 214 Executed State 14 Not Implemented h s 216 Executed...

Страница 17: ...ntrol problem 2 Water in tank above freezing 2 Temperature probe out of tolerance replace temp probe Possible Cause Remedy 1 Water in tank is low probe 1 Fill tank immersed in steam 2 Probe wiring sho...

Страница 18: ...SERVICE OF THIS WATER HEATER REQUIRES ABILITY EQUIVALENT TO THAT OF A LICENSED TRADESMANIN THE FIELD INVOLVED PLUMBING AIR SUPPLY VENTING GAS SUPPLYANDELECTRICALWORKAREREQUIRED Before attempting start...

Страница 19: ...ur hand to push in or turn the gas control knob Never use tools If the knob will not push in or turn by hand don t try to repair it call a qualified service technician Force or attempted repair may re...

Страница 20: ...ATERS ARE CERTIFIED FOR USE WITHOUT MODIFICATION FOR ALTITUDES UP TO 2000 FEET INSTALLATIONS ABOVE 2000 FEET MAY REQUIRE REPLACEMENT OF THE BURNER ORIFICE CALL THE TECHNICAL INFORMATION CENTER AT 800...

Страница 21: ...nance and service procedures may also require draining the heater 1 Turn off the heater electrical disconnect switch 2 Close the cold water inlet valve to heater 3 Open a nearby hot water faucet to ve...

Страница 22: ...MANUALLY OPERATING THE VALVE MAKE SURE THAT A DRAIN LINE HAS BEEN ATTACHED TO THE VALVE TO DIRECT THE DISCHARGE TO AN OPEN DRAIN FAILURE TO TAKE THIS PRECAUTION COULD MEAN CONTACT WITH EXTREMELY HOT...

Страница 23: ...R SUPPLIED TO FIXTURES PIPE TO OPEN DRAIN INSTALL IN ACCORDANCE WITH LOCAL CODES CAUTION IF BUILDING COLD WATER SUPPLY HAS A BACK FLOW PREVENTER CHECK VALVE OR WATER METER WITH CHECK VALVE PROVISIONS...

Страница 24: ...TEMPERATURE SETTING SHOULD NOT EXCEED SAFE TEMPERATURE AT FIXTURES SEE WATER TEMPERATURE CONTROL WARNING ON PAGE 3 IF HIGHER PREHEAT TEMPERATURES ARE NECESSARY TO OBTAIN ADEQUATE BOOSTER OUTPUT ADD A...

Страница 25: ...CIFICATIONS PAGE 28 CAUTION IF BUILDING COLD WATER SUPPLY HAS A BACK FLOW PREVENTER CHECK VALVE OR WATER METER WITH CHECK VALVE PROVISIONS FOR THERMAL EXPANSION OF WATER IN THE HOT WATER SYSTEM MUST B...

Страница 26: ...ECT CIRCULATING LINE OF 180 F 82 C OR BOOSTED WATER IF USED TO INLET WATER LINE TO BOOSTER INSTALL IN ACCORDANCE WITH LOCAL CODES TWO TEMPERATURE TWO HEATERS ONE PRE HEATER ONE BOOSTER HEATER WITH OR...

Страница 27: ...TE 4 IF TEMPERED WATER IS RECIRCULATED RETURN LINE SHOULD BE CONNECTED AT POINT A DANGER TEMPERATURE SETTING SHOULD NOT EXCEED SAFE TEMPERATURE AT FIXTURES SEE WATER TEMPERATURE CONTROL WARNING ON PAG...

Страница 28: ...er heating and storage potential of the system cannot be achieved Plus the units with the higher water flow may have a shortened life Unions shown in piping diagrams are not included in the manifold k...

Страница 29: ...ED 1 Check to see if the water heater drain valve is tightly closed Also check the cleanout opening for leakage 2 The apparent leakage may be condensation which forms on cool surfaces of the heater an...

Страница 30: ...ot greater than 11 0 2 74 kPa W C or lower than the minimal gas supply pressure as shown in Table 4 that is for Natural Gas 6 2 1 54 kPa W C pressure Also the manifold pressure should rise during the...

Страница 31: ...on is also installed at the heater s and operational at all times The relief valve installed on the heater is not an acceptable method 4 SERVICE AND REPAIR EXPENSES Under the limited warranty the warr...

Страница 32: ...32 A O SMITH WATER PRODUCTS CO INC 5621 W 115TH STREET ALSIP ILLINOIS 60803 PHONE 1 800 433 2545 FAX 1 800 433 2515 www hotwater com E mail parts hotwater com...

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