State Water Heaters STC-074 - Manuals

State Water Heaters STC-074 – Manual in PDF format online.

Manuals:

Manual

Manual State Water Heaters STC-074

Summary

Page 2 - SBN TANK TYPE COMMERCIAL GAS WATER HEATER; TABLE OF CONTENTS

1 Technical Training Department ©2003 Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK SBN Service Handbook Introduction ................................................ 2-3 Installation Considerations ...................................................................

Page 3 - SBN TANK TYPE COMMERCIAL GAS WATER HEATER; quick reference data to assist in servicing the product line; SBN Service Handbook Introduction

2 Technical Training Department Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK ©2003 TABLE OF CONTENTS Troubleshooting - Conditions ............................................................. 34 LED Troubleshooting ..................................................

Page 4 - Qualifications; voltage; Custom Commercial Storage Tank Model Number Break Down

3 Technical Training Department ©2003 Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK Qualifications Installation or service of this water heater requires ability equivalent to that of alicensed tradesman in the field involved. Plumbing, air supply, venting, gas su...

Page 5 - INSTALLATION CONSIDERATIONS; Clearances; Top and Front Views of Minimum Clearances To Combustibles

4 Technical Training Department Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK ©2003 INSTALLATION CONSIDERATIONS This por tion of the handbook reviews some often overlooked installation considerations—clearances, air supply, gas pressure requirements, and venting—...

Page 6 - Exterior Clearance

5 Technical Training Department ©2003 Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK Exterior Clearance The illustration below shows the required clearances for venting units usingnatural draft venting. Required Exterior Clearances The vent must extend at least 3 ...

Page 7 - Air Supply; BTU; AIR; Insufficient make-up air is a major cause of combustion problems.

6 Technical Training Department Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK ©2003 Stoichiometric or theoretical complete combustion requires 10 cubic feet of air per1,000 BTUH of gas supplied. The National Fuel Gas code also recommends anadditional 2.5 cubic fe...

Page 8 - Make-Up Air – Direct Communication

7 Technical Training Department ©2003 Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK A fresh supply of make-up air for combustion can be supplied to the heater throughmake-up air ducts, which directly communicate with the outdoors . Make-Up Air – Direct Communicat...

Page 10 - Along with adequate make-up air, the quality of the air is impor tant.; Contaminated Ai

9 Technical Training Department ©2003 Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK Along with adequate make-up air, the quality of the air is impor tant. Contaminated Ai r Contaminants in combustion air can lead to premature heater failure. Vapors frombleaches, ...

Page 11 - Gas Valve; Inlet View

10 Technical Training Department Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK ©2003 The supply gas pressure isnormally measured at the gasvalve inlet gas pressure tap,if available, when the gas is flowing.The manifold gas pressureis measured at the manifoldpress...

Page 12 - Outlet View

11 Technical Training Department ©2003 Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK The outlet view of the GasValve, shown on the right,shows the Manifold GasOutlet Connection, the two24 volt Main Valve (MV)Solenoid connections, andthe Manifold Pressure Tap.The ...

Page 13 - Venting; Venting – Atmospheric Multiple Heaters

12 Technical Training Department Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK ©2003 All SBN water heaters are classified by ANSI as Category I (non-condensing,negative pressure venting) appliances. They are approved for type B vent. The draftinducer does not pre...

Page 14 - The vent pipe should ALWAYS; NINE RULES FOR; The diameter of a vent pipe

13 Technical Training Department ©2003 Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK 1. The vent pipe should ALWAYS be the same size as the outlet ofthe draft diverter or factorysupplied vent reducer. • Model SBN 120 aresupplied with a 6” to 5”reducer. • Models S...

Page 15 - In some cases it may be

14 Technical Training Department Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK ©2003 3. In some cases it may be necessary to run a vent largerthan the draft diverter outlet. 4. Take the maximum vertical rise possible immediatelyabove the draft diverter. 5. 6. Hor...

Page 17 - TYPE B GAS VENT

16 Technical Training Department Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK ©2003 MODEL SBN 71-120NEInput: 120,000 Btu/hr Total Vent Height (Feet) Vent Connector Size: 5 inches 6 8 10 15 20 30 50 100 Input Btu/hr Rise Vent Connector Diameter (Inches) 120,000 1...

Page 19 - SB; Sequence

18 Technical Training Department Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK ©2003 SB N SEQUENCE OF OPERATION Sequence 1. Thermistors (probes) call for heat.2. Inducer fan starts and provides draft.3. Hot surface igniter = 20 sec. warmup.4. Main gas valve opens...

Page 22 - HSI INTEGRATED IGNITION CONTROL BOARD

Page 23 - LOWER FRONT VIEW OF SBN WATER HEATER; P a rt N u m b e r; H S I

22 Technical Training Department Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK ©2003 LOWER FRONT VIEW OF SBN WATER HEATER P a rt N u m b e r 1 9 4 4 0 5 V o l ts A C N o m i n a l 8 0 V A C Oh m s R e si sta n ce 1 1 .0 - 2 0 .0 @ 7 7 ° F (2 5 ° C ) H S I .1 - .2...

Page 24 - WIRING DIAGRAM; Propane (series) models do not have a low gas presure switch.; Upper

23 Technical Training Department ©2003 Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK WIRING DIAGRAM Propane (series) models do not have a low gas presure switch. R B R B Upper ECO { }

Page 26 - PRE-SERVICE CHECKLIST

25 Technical Training Department ©2003 Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK 1. Have you removed the cover from the controls?____________________________________________________ Did you take notice of the status lights on the upper waterheater control? __...

Page 27 - CONTROL BOARD DIAGNOSTIC LED INTERPRETATION AND; No Green display “Power” LED on.; 20 Vac C heck To Water H eater On Switch

26 Technical Training Department Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK ©2003 I f… . . . th en v olt age i s n o t p resen t f rom on/ of f s w it c h- c ent er blac k wire t o ground c hec k c ondit ions abov e c hec k w iring f rom s wit c h t o brea...

Page 28 - TEST 2 - POLARITY CHECK; FLASH CODES OF DIAGNOSTIC INDICATOR

27 Technical Training Department ©2003 Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK TEST 2 - POLARITY CHECK Conditions: No hot water Green “Power” LED is on. Tank is more than 5° Fbelow temperature dialsetting. Red ignition control boarddiagnostic LED is...

Page 29 - TEST 3 - CONTINUITY CHECK; Power On – No Hot Water

28 Technical Training Department Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK ©2003 If… ...then 115-125 VAC is not present see Test 1. voltage is present white (right terminal) to ground but not black (center terminal) to ground reverse supply wire connections -...

Page 30 - TEST 4 - UPPER TEMPERATURE PROBE CONTINUITY CHECK; “Call For Heat” LED off.; I f...; i s i n d i cated; c ont inuit y; i s n o t p resen t; wat er is les s t han 120° F; Ohms

29 Technical Training Department ©2003 Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK TEST 4 - UPPER TEMPERATURE PROBE CONTINUITY CHECK Conditions: Power On - Water below tempera-ture set point. Red, heater control “Reset Status”LED-OFF “Call For Heat” LED o...

Page 31 - TEST 5 - CALLING FOR HEAT – NO; Test on Ignition Board 4 Pin Receptacle E4; Water Heater

30 Technical Training Department Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK ©2003 TEST 5 - CALLING FOR HEAT – NO INDUCER OPERATION Conditions: Power on Plugs in Receptacles Red “ Call for Heat” LED-ON Inducer “Off ” Note flash code on ignition control ...

Page 32 - Power on; 4 VA C C heck of B lower Prover/Low Gas Pressure Circuit

31 Technical Training Department ©2003 Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK TEST 6 - INDUCER ON-NO IGNITION Conditions: Power on Plugs in receptacles Inducer operating No power to Hot Surface Igniter (HSI) Note flash code of LED TEST 6 24 VA C ...

Page 33 - TEST 7 - INDUCER ON – PROVER SWITCH AND LOW GAS SWITCH; Continuity check - Power off- Plug removed from E4 receptacles

32 Technical Training Department Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK ©2003 TEST 7 - INDUCER ON – PROVER SWITCH AND LOW GAS SWITCH CLOSED – NO IGNITER OPERATION Continuity check - Power off- Plug removed from E4 receptacles TEST 7 Voltage check and con...

Page 34 - TEST 8 - IGNITER HEATS – NO MAIN BURNER; Plugs in receptacle; Test of Igniter and gas valve circuit; If...

33 Technical Training Department ©2003 Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK TEST 8 - IGNITER HEATS – 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 L...

Page 35 - TEST 9 - IGNITER HEATS – NO MAIN BURNER; Test 8 completed then:; Continuity Check Of Gas Valve Coil

34 Technical Training Department Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK ©2003 TEST 9 - IGNITER HEATS – NO MAIN BURNER Conditions: Test 8 completed then: Turn off power Disconnect wires from gas valves TEST 9 Continuity Check Of Gas Valve Coil If… ......

Page 36 - TEST 10 - MAIN BURNER IGNITION FOR LESS THAN 5 SECONDS; Power On – plug connected; Flame Prover Circuit Check; Main Burner

35 Technical Training Department ©2003 Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK TEST 10 - MAIN BURNER IGNITION FOR LESS THAN 5 SECONDS Conditions: Power On – plug connected Main Burner ignites for approximately 5 seconds then goes out. Tests 8 and 9 co...

Page 37 - TEST 11 - WATER HEATER SHUTTING OFF BELOW SETTING; Main burner ignited; Water Temperature Circuit Check - Continuity; Black

36 Technical Training Department Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK ©2003 TEST 11 - WATER HEATER SHUTTING OFF BELOW SETTING Conditions: Main burner ignited Stored water is below temperature setting more than 5° F (Tank Average). Power off Plug ...

Page 38 - DISPLAY LIGHTS ON INTEGRATED HEATER CONTROL

37 Technical Training Department ©2003 Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK DISPLAY LIGHTS ON INTEGRATED HEATER CONTROL • Push the manual reset button. • Troubleshoot for “why” the ECO opened Tank has cooled below 120° F Preceded by “ECO Open” indication...

Page 39 - LED INDICATORS ON HOT SURFACE IGNITION (HSI); LED STATUS

38 Technical Training Department Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK ©2003 LED INDICATORS ON HOT SURFACE IGNITION (HSI) USING FLASHING RED LED ON HSI (HOT SURFACE IGNITION) 1 Flash 2 Flashes 3 Flashes 4 Flashes 6 Flashes System is in lockout. Draft prov...

Page 40 - Flashes

39 Technical Training Department ©2003 Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK 7 Flashes 8 Flashes ContinuousFlash ContinuousON Flame sensor reads alow flame signal formore than 4.25 sec. No ignition sensed Continuous flamesensed for more than 5seconds with...

Page 44 - GENERAL QUESTIONS AND ANSWERS; Q: What is the effect of the draft inducer?

43 Technical Training Department ©2003 Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK GENERAL QUESTIONS AND ANSWERS Q: What is the effect of the draft inducer? A: The draft inducer has several effects:• minimizes the excess air through the heater—this often reduce...

Page 45 - Q: Does the inducer motor require oiling?

44 Technical Training Department Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK ©2003 Q: When should anode rods, which provide additional protection againstcorrosion, be replaced? A: Anode rods should be replaced when large gouges or pits appear in the anodes. Iti...

Page 46 - XFMER Secondary 24 V; Electrical Information; S BN M o d el s; D ra ft P ro v in g (P re s s u re ) S witc h T a b le

45 Technical Training Department ©2003 Ashland City, Tennessee SBN TANK TYPE COMMERCIAL GAS WATER HEATER SERVICE HANDBOOK Part Name Number Voltage Amperes XFMER Secondary 24 V 1.5 Field Output 24 V 11.5 Inducer (Blower) 194408-0 120 VAC 1.7 ECO (Part of Upper Temperature Sensor) 194396 24 V - Opens ...