State Water Heaters STC-074 manual

2 F or pr opane inputs and other more detailed information, visit www .statewaterheaters.com to view or do wnload Specification Sheets. Part No. STC-074 $20.00 Printed in the U.S.A. 0 2 04 SBN 71 120 through 85390 (A) SERIES 100 Models SBN Meets Low NOx Requirements of SCAQMD Rules 1 121 & 1 146.2 Service Handbook For Self-Cleaning Induced Draf[...]

1 T echnical Training Department ©2003 Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK SBN Service Handbook Introduction ................................................ 2-3 Installation Considerations ................................................................... 4 Clearances ........................[...]

2 T echnical T raining Depar tment Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK ©2003 T ABLE OF CONTENTS T roub leshooting - Conditions ............................................................. 34 LED T roub leshooting ........................................................................... 36 Pa[...]

3 T echnical Training Department ©2003 Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK Qualifications Installation or service of this water heater requires ability equivalent to that of a licensed tradesman in the field in volv ed. Plumbing, air supply , venting, gas supply and electrical testing skills ar[...]

4 T echnical T raining Depar tment Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK ©2003 INST ALLA TION CONSIDERA TIONS This por tion of the handbook re views some often ov er looked installation considerations —clearances, air supply , gas pressure requirements, and v enting—taking note of necessar y [...]

5 T echnical Training Department ©2003 Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK Exterior Clearance The illustration below shows the required clearances for venting units using natural draft venting. Required Exterior Clearances The vent must extend at least 3 feet above the highest point where it pa[...]

6 T echnical T raining Depar tment Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK ©2003 Stoichiometric or theoretical complete combustion requires 10 cubic feet of air per 1,000 BTUH of gas supplied. The National Fuel Gas code also recommends an additional 2.5 cubic f eet of “e xcess” air . For inform[...]

7 T echnical Training Department ©2003 Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK A fresh supply of make-up air for combustion can be supplied to the heater through make-up air ducts, which directly communicate with the outdoors . Make-Up Air – Direct Communication (Not Direct V ent) T wo openings a[...]

8 T echnical T raining Depar tment Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK ©2003 Often, it is more practical to install v er tical mak e-up ducts to the outdoors. Make-Up Air - V ertical Ducts Again, two openings are required: one within 12 inches of the top of the enclosure and one within twelve i[...]

9 T echnical Training Department ©2003 Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK Along with adequate make-up air , the quality of the air is impor tant. Contaminated Ai r Contaminants in comb ustion air can lead to premature heater failure . V apors from bleaches, soaps, waxes, salts, etc. are drawn [...]

10 T echnical T raining Depar tment Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK ©2003 The supply gas pressure is normally measured at the gas valv e inlet gas pressure tap , if available, when the gas is flowing. The manifold gas pressure is measured at the manifold pressure tap of the gas valve when t[...]

11 T echnical Training Department ©2003 Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK The outlet view of the Gas V alve , shown on the right, shows the Manifold Gas Outlet Connection, the two 24 v olt Main V alv e (MV) Solenoid connections, and the Manif old Pressure T ap . The two yellow wires from the [...]

12 T echnical T raining Depar tment Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK ©2003 All SBN water heaters are classified by ANSI as Category I (non-condensing, negativ e pressure venting) appliances . The y are approv ed f or type B vent. The draft inducer does not pressurize the exhaust. V enting F [...]

13 T echnical Training Department ©2003 Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK 1 . The vent pipe should AL W A YS be the same size as the outlet of the draft div er ter or f actor y supplied vent reducer . • Model SBN 120 are supplied with a 6” to 5” reducer . • Models SBD 250, 251 and 275[...]

14 T echnical T raining Depar tment Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK ©2003 3 . In some cases it may be necessary to run a vent larger than the draft div er ter outlet. 4 . T ake the maximum v er tical rise possible immediately abov e the draft div er ter . 5. 6 . Horizontal pipe should be sl[...]

15 T echnical Training Department ©2003 Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK 8. Flue gases must be kept hot for proper venting. 9. Obstructions can cause down drafts. The vent pipe should be extended to meet local codes.[...]

16 T echnical T raining Depar tment Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK ©2003 MODEL SBN 71-120NE Input: 120,000 Btu/hr T otal V ent Height (Feet) V ent Connector Size: 5 inches 6 8 10 15 20 30 50 100 Input Btu/hr Rise V ent Connector Diameter (Inches) 120,000 1 Ft . 6 6 5 5 5 5 5 5 120,000 2 Ft[...]

17 T echnical Training Department ©2003 Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK MODEL SBN 100-250NE TECHNICAL D A T A VENTING (Continued) Input: 250,000 Btu/hr T otal V ent Height (Feet) V ent Connector Size: 6 inches 6 8 10 15 20 30 50 100 Input Btuh/hr Rise V ent Connector Diameter (Inches) 250,0[...]

18 T echnical T raining Depar tment Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK ©2003 SB N SEQUENCE OF OPERA TION Sequence 1. Thermistors (probes) call for heat. 2. Inducer f an star ts and provides draft. 3. Hot surface igniter = 20 sec. w a r m u p. 4. Main gas valve opens 4 sec. trial for ignition. [...]

19 T echnical Training Department ©2003 Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK FRONT VIEW OF WA TER HEA TER[...]

20 T echnical T raining Depar tment Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK ©2003 WHITE ROGERS INTEGRA TED WA TER HEA TER CONTR OL (PAR T NO . 194393-0) - ALSO CALLED “THERMOSA T”[...]

21 T echnical Training Department ©2003 Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK HSI INTEGRA TED IGNITION CONTROL BO ARD (PART NO . 194392) E4 E1[...]

22 T echnical T raining Depar tment Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK ©2003 LO WER FR ONT VIEW OF SBN WA TER HEA TER P ar t N umber 194405 Vo l t s AC Nom i n a l 8 0 VAC Ohms R esis t anc e 11. 0 - 20. 0 @ 7 7° F ( 25 ° C ) HSI .1 - .25” Notice that rods cross main burner flame[...]

23 T echnical Training Department ©2003 Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK WIRING DIA GRAM Propane (series) models do not have a low gas presure switch. R B RB Upper EC O {}[...]

24 T echnical T raining Depar tment Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK ©2003 ELECTRICAL SEQUENCE OF SBN WA TER HEA TER OPERA TION 120 VA C Power to Heater Gree n LED - On Call f or Heat Gree n LED - On Module S elf Check Low Gas Pressure Switch is C losed Draft Proving Switch Is Open High Limi[...]

25 T echnical Training Department ©2003 Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK 1. Have you removed the cover from the controls? ____________________________________________________ Did you take notice of the status lights on the upper water heater control? _________________________________________[...]

26 T echnical T raining Depar tment Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK ©2003 If … ...t hen v oltage i s n o t p resen t f rom on/ of f s w it c h- c enter blac k wir e t o ground  c hec k c onditions abov e  c hec k wir ing from s witc h to break box power is p resen t from c ent er on[...]

27 T echnical Training Department ©2003 Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK TEST 2 - POLARITY CHECK Conditions:  No hot water  Green “P ower” LED is on.  T ank is more than 5° F below temperature dial setting.  Red ignition control board diagnostic LED is flashing 6 times betwe[...]

28 T echnical T raining Depar tment Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK ©2003 If … ...t he n 115-125 V A C is n ot p resen t see Test 1. volt age i s p r esen t whit e (right t erm in al) t o ground bu t not black (c ent er term i nal ) t o g round rev erse s uppl y wire c onnect i ons - pol [...]

29 T echnical Training Department ©2003 Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK TEST 4 - UPPER TEMPERA TURE PR OBE CONTINUITY CHECK Conditions:  Power On - W ater below tempera- ture set point.  Red, heater control “Reset S tatus” LED-OFF  “Call For Heat” LED off. TEST 4 U pper Tem[...]

30 T echnical T raining Depar tment Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK ©2003 TEST 5 - CALLING FOR HEA T – NO INDUCER OPERA TION Conditions:  P o wer on  Plugs in Receptacles  Red “ Call for Heat” LED-ON  Inducer “Off ” Note flash code on ignition control board diagnostic [...]

31 T echnical Training Department ©2003 Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK TEST 6 - INDUCER ON-NO IGNITION Conditions:  P o wer on  Plugs in receptacles  Inducer operating  No power to Hot Surface Igniter (HSI)  Note flash code of LED TEST 6 24 VA C C heck of B l o w er Prover/ [...]

32 T echnical T raining Depar tment Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK ©2003 TEST 7 - INDUCER ON – PRO VER SWITCH AND LO W GAS SWITCH CLOSED – NO IGNITER OPERA TION  C onti nuit y check - Power o ff- P lug re m o v e d fro m E 4 r eceptacl es TEST 7 Volt age ch eck and con ti nui t y ch[...]

33 T echnical Training Department ©2003 Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK TEST 8 - IGNITER HEA TS – NO MAIN BURNER Conditions:  Plugs in receptacle  Igniter energizes (gets red)  No main burner or main shuts off within 5 seconds. Note flash code of LED . TEST 8 Test of I g nit er a[...]

34 T echnical T raining Depar tment Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK ©2003 TEST 9 - IGNITER HEA TS – NO MAIN BURNER Conditions:  T est 8 completed then:  T ur n off pow er  Disconnect wires from gas valves TE S T 9 C o n ti n u i t y C h eck O f Gas V al ve C o i l If … ... t h [...]

35 T echnical Training Department ©2003 Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK TEST 10 - MAIN BURNER IGNITION FOR LESS THAN 5 SECONDS Conditions:  P o wer On – plug connected  Main Burner ignites for approximately 5 seconds then goes out.  T ests 8 and 9 completed  Note flash code on[...]

36 T echnical T raining Depar tment Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK ©2003 TEST 11 - WA TER HEA TER SHUTTING OFF BELO W SETTING Conditions:  Main burner ignited  Stored water is belo w temperature setting more than 5° F (T ank A ver age).  P ow er off  Plug disconnected from hea[...]

37 T echnical Training Department ©2003 Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK DISPLA Y LIGHTS ON INTEGRA TED HEA TER CONTR OL • Push the man ual res et butt on. • Troubles hoot for “why” th e ECO opened Tank has c ooled below 120° F Preceded b y “ECO Open” in dication Tank is at a se[...]

38 T echnical T raining Depar tment Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK ©2003 LED INDICA T ORS ON HOT SURF ACE IGNITION (HSI) USING FLASHING RED LED ON HSI (HOT SURF ACE IGNITION) 1 Flash 2 Flashes 3 Flashes 4 Flashes 6 Flashes System is in lockout. Draft proving (pressure) switch (closes at -2[...]

39 T echnical Training Department ©2003 Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK 7 Flashes 8 Flashes Continuous Flash Continuous ON Flame sensor reads a low flame signal for more than 4.25 sec. No ignition sensed Continuous flame sensed for more than 5 seconds without gas valve being energized Inter[...]

40 T echnical T raining Depar tment Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK ©2003 PAR T LOCA TIONS ON SBN SERIES 120,000 - 390,000 BTU/H INPUT MODELS 120 THROUGH 400/A www .stateind.com[...]

41 T echnical Training Department ©2003 Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK 120 154 180 199 200(A) Blower Assembly: 3 Blower ................................................. 194408 ......... 194408 . . ........ 194408 .......... 194408 ......... 194408 4 Outlet Assembly , Exhaust .............[...]

42 T echnical T raining Depar tment Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK ©2003 Item 250(A) 275(A) 310(A) 366(A) 400(A) Blower Assembly: 3 Blower ....................................... 194408 ........ 194408 ......... 194408 ........ 194408 ....... 194408 4 Outlet Assembly , Exhaust ............[...]

43 T echnical Training Department ©2003 Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK GENERAL QUESTIONS AND ANSWERS Q: What is the effect of the draft inducer? A: The draft inducer has se ver al effects: • minimizes the excess air through the heater—this often reduces the required vent size • reduc[...]

44 T echnical T raining Depar tment Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK ©2003 Q: When should anode r ods, which pr o vide additional pr otection against corrosion, be replaced? A: Anode rods should be replaced when large gouges or pits appear in the anodes. It is recommended that anodes be insp[...]

45 T echnical Training Department ©2003 Ashland City , T ennessee SBN T ANK TYPE COMMERCIAL GAS W A TER HEA TER SER VICE HANDBOOK Part Nam e Num ber Voltage A m peres X F ME R S ec ondar y 24 V 1. 5 Fi el d Out put 24 V 11. 5 Induc er (B l ower) 194408-0 120 V A C 1. 7 E CO (P art of Upper T emperat ure S ens or) 194396 24 V - Opens at 203° ± 5.[...]

For Additional Information Contact State W ater Heater T echnical Information At 1-800-365-0577 Prepared By The T raining Department In Ashland City , T ennessee W ebsite: www .statewaterheaters.com[...]