background image

9

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 2.   The figures
shown are for straight lengths of pipe at 0.5 in. W.C. pressure
drop, which is considered normal for low pressure systems.
Note:  Fittings such as elbows, tees and line regulators will add
to the pipe pressure drop.  Also refer to the latest version of the
National Fuel Gas Code.

 WARNING

THE HEATER IS NOT INTENDED FOR OPERATION AT HIGHER
THAN 14.0" W.C.(3.48 kPa) - NATURAL GAS, 14.0" W.C.(3.48kPa)
EXPOSURE TO HIGHER SUPPLY PRESSURE MAY CAUSE
DAMAGE TO THE GAS VALVE 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.

TABLE 2 - GAS SUPPLY LINE SIZES (IN INCHES)*

MAXIMUM CAPACITY OF PIPE IN CUBIC FEET 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)

LENGTH

NOMINAL IRON PIPE SIZES (INCHES)

IN 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

250 465

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

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 SEDIMENT TRAP OR
DRIP LEG) MUST BE INCORPORATED IN THE PIPING (SEE FIG.
9).  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 LATEST VERSION OF THE NATIONAL
FUEL GAS CODE.

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 compounds to the first
two threads.  Use compounds resistant to the action of liquefied
petroleum gases.

BEFORE PLACING THE HEATER IN OPERATION, CHECK FOR GAS
LEAKAGE. 

 Use soap and water solution or other material

acceptable for the purpose in locating the leaks.  

DO NOT USE

MATCHES, CANDLES, FLAME OR OTHER SOURCES OF IGNITION
FOR THIS PURPOSE.

DISCONNECT THE HEATER AND ITS MANUAL GAS SHUTOFF
VALVE FROM THE GAS SUPPLY PIPING SYSTEM DURING ANY
SUPPLY PRESSURE TESTING EXCEEDING 1/2 PSIG.  GAS
SUPPLY LINE MUST BE CAPPED WHEN DISCONNECTED FROM
THE HEATER FOR TEST PRESSURES OF 1/2 PSIG OR LESS. THE
APPLIANCE NEED NOT BE DISCONNECTED, BUT MUST BE
ISOLATED FROM THE SUPPLY PRESSURE TEST BY CLOSING
THE MANUAL GAS SHUTOFF VALVE.

GAS PIPING AND DIRT LEG INSTALLATION

FIGURE 9

PURGING

Gas line purging is required with new piping or systems in which
air has entered.

 CAUTION

PURGING SHOULD BE PERFORMED BY PERSONS EXPERIENCED
IN THIS TYPE GAS SERVICE.  TO AVOID RISK OF FIRE OR
EXPLOSION, PURGE DISCHARGE MUST NOT ENTER CONFINED
AREAS OR SPACES WHERE IGNITION CAN OCCUR.  THE AREA
MUST BE WELL VENTILATED AND ALL SOURCES OF IGNITION
MUST BE INACTIVATED OR REMOVED.

GAS METER SIZE — NATURAL GASES ONLY

Be sure the gas meter has sufficient capacity to supply the full
rated gas input of the water heater as well as the requirements
of all other gas fired equipment supplied by the meter.  If gas
meter is too small, ask the gas company to install a larger meter
having adequate capacity.

GAS PRESSURE REGULATOR

The gas pressure regulator is built into the gas valve and is
equipped to operate on the gas specified on model and rating

Summary of Contents for SBD 30 150

Page 1: ...ENCE Printed in U S A 1004 PART NO 196310 001 500 LINDAHL PARKWAY ASHLAND CITY TN 37015 www statewaterheaters com CAUTION TEXT IN BLACK BOLD TYPE OR UNDERLINED CONTAINS INFORMATION RELATIVE TO YOUR SA...

Page 2: ...ence of local codes the installation must comply with the latest editions of the National Fuel Gas Code ANSI Z223 1 NFPA 54 and the National Electrical Code NFPA 70 documents are available from the Na...

Page 3: ...lure of water heater is due to a corrosive atmosphere Refer to the limited warranty for complete terms and conditions IMPROPER COMBUSTION WARNING ATTICAND OREXHAUSTFANSOPERATINGONTHEPREMISES WITH AWAT...

Page 4: ...As elevation above sea level is increased there is less oxygen per cubic foot of air Therefore the heater input rate should be reduced at high altitudes for satisfactory operation with the reduced oxy...

Page 5: ...ting leading outside The exhaust inducer is equipped with a gravity controlled damper to reduce the amount of heat loss through the flue improving efficiency FIGURE5 EXHAUSTINDUCER CIRCULATING PUMP A...

Page 6: ...NOT RESULT IN DAMAGE TO THE ADJACENTAREAORTOLOWERFLOORSOFTHESTRUCTURE WHEN SUCH LOCATIONS CANNOT BEAVOIDED ASUITABLE DRAINPANSHOULDBEINSTALLEDUNDERTHEHEATER Such pans should be fabricated with sides a...

Page 7: ...nted in compliance with all local codes the current revision of the National Fuel Gas Code ANSI Z223 1 and with the Category I Venting Tables If any part of the vent system are exposed to ambient temp...

Page 8: ...cessive pressure may develop in such closed systems causing premature tank failure or intermittent relief valve operation This is not a warranty failure An expansion tank or a similar device may be re...

Page 9: ...ION IF COPPER SUPPLY LINES ARE USED THEY MUST BE INTERNALLYTINNEDANDCERTIFIEDFORGASSERVICE BEFORE ATTACHING THE GAS LINE BE SURE THAT ALL GAS PIPE IS CLEANONTHEINSIDE TOTRAPANYDIRTORFOREIGNMATERIALINT...

Page 10: ...t pressure tap of automatic gas valve while heater is operating FIGURE10 SINGLEUNITWIRINGDIAGRAM HEATER WIRING All electrical work must be installed in accordance with the latest version of the Nation...

Page 11: ...temperature and pressure relief valve of adequate capacity is installed on the heater The locations shown in the installation diagrams on the following pages are typical The discharge opening of the t...

Page 12: ...LD NOT EXCEED SAFE USE TEMPERATUREAT FIXTURES SEE WATER TEMPERATURE CONTROL WARNING ON PAGE 20 IF HIGHER PREHEAT TEMPERATURES ARE NECESSARY TO OBTAIN ADEQUATE BOOSTER OUTPUT ADD AN ANTI SCALD VALVE FO...

Page 13: ...E TOGGLESWITCHMUSTBECLOSED ON DURING THERINSEOPERATIONANDOPEN OFF WHENDISHWASHER IS NOTOPERATING OR WHEN ON LONG STANDBY NOTE 2 INSTALLLINETEMPERATURECONTROLINANUNINSULATED TEEBEYONDTHEDISHWASHINGMACH...

Page 14: ...ons shown in the installation diagrams on the following pages are typical TWO TEMPERATURE TWO HEATERS ONE PRE HEATER ONE BOOSTER HEATER WITH OR WITHOUT BUILDING RECIRCULATION The discharge opening of...

Page 15: ...OTE 3 ADJUST PLUG COCK SO THE SANITIZING LOOP FLOW RATE DOES NOT CAUSE UNNECESSARY TURBULENCE IN THE TANK PIPE RELIEF VALVE TO OPEN DRAIN INSTALL IN ACCORDANCE WITH LOCAL CODES CIRCULATING RETURN LINE...

Page 16: ...ERS WITH MIXING VALVE TWO PRE HEATERS WITH BOOSTER HEATER DANGER TEMPERATURE SETTING SHOULD NOT EXCEED SAFE USE TEMPERATURE AT FIXTURES SEE WATER TEMPERATURE CONTROL WARNING ON PAGE 20 IF HIGHER PREHE...

Page 17: ...STER OUTPUT ADD AN ANTI SCALD VALVE FOR HOT WATER SUPPLIED TO FIXTURES PIPE RELIEF VALVE TO OPEN DRAIN WHEN USING AN A O SMITH T 140 200 350 OR 400 STORAGE TANK USE LOWER 3 4 OPENING FOR TANK TEMPERAT...

Page 18: ...n burner before going into lockout After the controller tries three times it will wait one hour before trying to light the unit again This cycle will continue until the main burners are ignited or the...

Page 19: ...tes to clear out any gas If you then smell gas STOP Follow B in the safety information above on this label If you don t smell gas go on to the next step 7 Turn gas control knob counterclockwise to ON...

Page 20: ...o faucets to limit hot water temperatures Contact a licensed plumber or the local plumbing authority The water temperature is controlled by a thermostat see Figure 3 which has two sensing elements One...

Page 21: ...ecrease gas pressure and input rate 4 Clock the meter as in step 2 above 5 Repeat steps 3 and 4 until the specified input rate is achieved 6 Turn the gas control knob to PILOT Remove the pressure gaug...

Page 22: ...e inner cover for cleaning inspection or removal of inner parts you obtain two new nipple collars part no 74060 The nipple collars on the heater will usually be damaged when removed New pipe collars w...

Page 23: ...LIMINGUSINGFLO JUGMETHOD UN LIME in the 5 gallon size is recommended for deliming UN LIME with the necessary hoses and fittings to delime your heater is also available as a kit Up N Down Transfer Kit...

Page 24: ...1 800 821 2017 or visit our website at www statewaterheaters com When ordering parts be sure to state the quantity part number and description of the items including the complete model and serial numb...

Page 25: ...engages Prover Switch Ignition Control Board provides power to Silicon Nitride Ignitor Silicon Nitride Ignitor warms up for 20 seconds Ignition Control Board opens Gas Valve Ignition Control Board sh...

Page 26: ...Replace dual bulb controller if differential is too wide greater than 4 F Heater recovery is slower Call serviceman Check gas input If incorrect adjust gas pressure or replace main burner orifice Dra...

Page 27: ...on device check valves etc is installed in the cold water supply the heater is connected to unless an effective method of controlling thermal expansion is also installed at the heater s and operationa...

Page 28: ...28 500 Lindahl Parkway Ashland City TN 37015 Phone 800 821 2017 Fax 800 644 9306 www statewaterheaters com...

Reviews: