Instruction/ maintenance manual of the product STC-074 State Water Heaters
Go to page of 47
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.
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 ......
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 .
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.
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 view.
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.
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.
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 .
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.
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 .
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.
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 .
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.
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 .
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 .
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 .
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,.
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.
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 .
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 .
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.
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.
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.
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? ____________________.
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 .
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.
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.
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.
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: .
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 .
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 .
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.
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 … .
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.
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).
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.
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.
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.
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 .
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 .
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 .....
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 indu.
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.
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.
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 .
An important point after buying a device State Water Heaters STC-074 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought State Water Heaters STC-074 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data State Water Heaters STC-074 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, State Water Heaters STC-074 you will learn all the available features of the product, as well as information on its operation. The information that you get State Water Heaters STC-074 will certainly help you make a decision on the purchase.
If you already are a holder of State Water Heaters STC-074, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime State Water Heaters STC-074.
However, one of the most important roles played by the user manual is to help in solving problems with State Water Heaters STC-074. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device State Water Heaters STC-074 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
