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Related Manuals for State Water Heaters SandBlaster SBD71 120
Summary of Contents for State Water Heaters SandBlaster SBD71 120
- Page 1 Self Cleaning Commercial Gas Water Heaters with Flue Damper and Electronic Ignition M O D E L S C O V E R E D SBD71 120 Through SBD85 500 Also includes Parts List Part Number STC-072 COMMERCIAL Printed in the U.S.A. - 0106...
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Page 2: Table Of Contents
PAGE Introduction Installation Clearances Air Requirements Contaminated Air Flammable Gas Pressure Gas Valve Venting 12-15 Sequence of Operation Mechanical Electrical 17-18 Troubleshooting Transformer High Limit 20-21 Damper (on Standby) PC Board 22-23 Thermostat Effikal Damper Effikal Harness Test Normal Operation 26-27 SBD SERVICE HANDBOOK INTRODUCTION This service handbook is designed to aid in servicing and troubleshooting State SBD water heaters in the... - Page 3 Qualifications: Installation or service of this water heater requires ability equivalent to that of a licensed tradesman in the field involved. Plumbing, air supply, venting, gas supply and electrical testing skills are required. Tools Required: Phillips head screwdriver standard screwdrivers a 3/8 and 7/16 inch open end wrench set of marked drill bits an electrical multimeter tester capable of measuring continuity...
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Page 4: Installation
This portion of the handbook will review some often overlooked installation considerations, taking note of necessary installation requirements for the SBD 71120 through SBD 85500 model heaters. The installation manual covers most of these items in detail. CLEARANCES FROM COMBUSTIBLES Clearance to Combustibles Table MODEL 120 - 200... -
Page 5: Exterior Clearance
SBD TANK TYPE HEATERS SERVICE HANDBOOK EXTERIOR CLEARANCE "Copyright by the American Gas Association. Used by permission of the copyright holder". This illustrates the exterior roof clearances for SBD units with natural draft venting. The vent shall extend at least 3 feet above the highest point where it passes through a roof of a building, and at least 2 feet higher than any portion of a building within a horizontal distance of 10 feet (for vents of 12"... - Page 6 10 CUBIC FEET OF AIR PER 1,000 BTU Stoichiometric or theoretical complete combustion requires 10 cubic feet of air per 1000 BTUH input of the gas input. additional 2.5 cu.ft. of "excess" air. This 12.5 cu.ft minimum supply air per 1000 BTUH input applies to natural and propane gas models.
- Page 7 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 out of doors. Two openings are required - one within 12 inches of the top of the enclosure and one within twelve inches of the bottom of the enclosure.
- Page 8 Often it is more practical to install vertical make-up air ducts to the out doors. Again, two openings are required - one within 12 inches of the top of the enclosure and one within twelve inches of the bottom of the enclosure. Each opening shall have a free area of not less than 1 square inch per 4000 BTUH of the total input of all appliances within the enclosure.
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Page 9: Air Requirements
SBD TANK TYPE HEATERS SERVICE HANDBOOK INSUFFICIENT MAKE-UP AIR BACKDRAFT Insufficient make-up air is a major cause of combustion problems. One common example is in a restaurant installation where exhaust vent equipment was not considered in sizing make-up air requirements. This may result in air being backdrafted by the restaurant exhaust equipment through the heater causing flue gas spillage, flame roll out, improper combustion, inconsistent pilot operation, and/or erratic heater shut down. -
Page 10: Contaminated Air
Along with adequate make-up air, the quality of the air is important. Contaminants in combustion air can lead to premature heater failure. waxes, salts, etc. are drawn into the combustion chamber with the make-up air and, once fired, mix with water vapor in the gases to form extremely corrosive hydrochloric or hydrofluoric acid and other corrosive byproducts. -
Page 11: Gas Pressure
Supply Gas Dirt Leg Maximum Supply Pressure Minimum Supply Pressure Manifold Pressure The supply gas pressure is normally measured at the dirt leg or at the gas pressure tapping on the gas supply shutoff valve. This reading must be measured with 'flowing' gas. -
Page 12: Gas Valve
The gas valves used on all SBD water heaters are 24 volt AC combination step opening gas valves. They incorporate the pilot valve, main valve, and gas pressure regulators into one body. The inlet view of the valve features a filter screen and the top knob. The top knob is a manual on/off gas control for both the pilot and main gas valves. -
Page 13: Venting
Atmospheric, Single, and Multiple Heaters All SBD water heaters are classified by ANSI as category I (non-condensing, negative pressure venting) appliances. They are approved for type B vent. For larger applications, SBD water heaters can be common vented together either in a tapered manifold or constant size manifold. - Page 14 Nine Rules for Good Vents (continued) 2. The diameter of a vent pipe should NEVER be reduced, no matter what the circumstances. 3. In some cases it may be necessary to run a vent larger than the draft diverter outlet. 4.
- Page 15 Nine Rules for Good Vents (continued) 6. Horizontal pipe should be sloped upward at a minimum of ¼” per foot. 7. Horizontal elements should be limited to 75% of the vertical rise of the vent above the connection. 8. Flue gases must be kept hot for proper venting. 9.
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Page 16: Power Vent Kits For Sidewall Venting
POWER VENT KITS FOR SIDEWALL VENTING Female plug to Damper 40’, Power Venter cable with “Y” connect Male plug to Cable Water Heater Models SBD-120-200 SBD-250-500 SBD water heaters can be used with power vent kits for sidewall venting. State offers power vent kits for use on installations with a maximum of 100 equivalent feet of vent piping. -
Page 17: Sequence Of Operation
SBD SEQUENCE OF OPERATION 1. Thermostat calls for heat 7. Thermostat satisfies 3. Intermittent Ignition Control 5. Main gas valve opens SEQUENCE OF OPERATION To understand SBD tank type water heaters, an examination of their sequence of operation is necessary. When the thermostat calls for heat, the relay in the draft hood assembly activates the flue damper motor. -
Page 18: Electrical
SBD TANK TYPE HEATERS SERVICE HANDBOOK SBD ELECTRICAL SEQUENCE 100 – 109 Series Technical Training Department Ashland City, TN ©2003... -
Page 19: Electrical
SBD ELECTRICAL SEQUENCE OF OPERATION Closes Proving End Switch Module (PV) Terminal Sends 24V to Pilot Coil Pilot Ignites and Proves Flame Spark Stops Module (MV) Terminal Sends 24V To Main Gas Coil Main Burner Heats Tank Themostat Opens Power to Damper #2 Interrupted Damper Motor Energized and Damper Closed... - Page 20 TROUBLESHOOTING SBD WATER HEATERS To troubleshoot a SBD water heater check that: 120 VAC is supplied to the heater the tank is full of water gas is supplied to the unit STEP 1 STEP 1 - TO TEST THE TRANSFORMER - Using a multimeter, test for 24 VAC between the secondary transformer terminals.
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Page 21: High Limit
STEP 2 24 VAC FM Transformer STEP 2. HIGH LIMIT, LEFT TERMINAL TEST. Test for 24 VAC between the left high limit terminal and ground. The meter does not read 24 VAC: The meter reads 24 VAC: Note: The high limit (Energy Cut Off) opens if the tank water temperature exceeds 205 degrees. -
Page 22: High Limit
STEP 3 High Limit (ECO) Reset Button Black-To Damper Motor STEP 3. TO TEST HIGH LIMIT RIGHT TERMINAL. Ensure that the jumper wire between the high limit and thermostat is connected, and the damper motor power line is connected. Test for 24 VAC between the high limit right terminal and ground. The meter does not read 24 VAC: The meter reads 24 VAC: After Push in Reset - 24 VAC is now present... -
Page 23: Pc Board
STEP 4 STEP 4. INSPECT THE DAMPER. Lower the thermostat setting so the unit will not be calling for heat, then inspect the damper. If the damper is open: If the damper is closed: Note: If the water temperature in the tank is below 120 degrees F, temporarily disconnect the jumper wire between the high limit and thermostat to simulate a satisfied thermostat. -
Page 24: Pc Board
STEP 6 Service Switch Motor Lead STEP 6. PC BOARD/MOTOR TEST. Check for 24 VAC between the two motor lead terminals of the PC board. Disconnect the wires for this test. 24 VAC is not present: Voltage is present: Note: The service switch may be used to bypass the damper, while waiting for a replacement part. WARNING - In the event of damper motor failure, verify that the damper is in the "open"... -
Page 25: Thermostat
STEP 7 STEP 7. THERMOSTAT TEST. multimeter, test for 24 VAC between right terminal and ground. The meter does not read 24 VAC and the jumper wire between the high limit and the thermostat is in place: The meter reads 24 VAC: Note: If the high limit to thermostat jumper wire was disconnected earlier to simulate a satisfied thermostat, reconnect the jumper to the terminals. -
Page 26: Effikal Damper
The wiring colors from the damper PC Board are different colors than the wires on the heater wiring harness. The male/female plugs to connect the damper board to the heater harness join in only one way. Service Switch Heater Harness Effikal Control Cover (Photo of kit mounting) Adapter not necessary on production 110,111 Series The heater harness wires still serve the same function:... -
Page 27: Normal Operation
Heater Harness Black Yellow White Condition: Heater on standby Damper closed High Limit closed TEST FOR 24VAC BETWEEN BLACK (COMMON) STEP 8 AND BROWN STEP 8. TEST FOR 24VAC BETWEEN BLACK (COMMON) AND BROWN 24VAC is present 24VAC is not present Technical Training Department Ashland City, TN ©2003 SBD TANK TYPE HEATERS... -
Page 28: Normal Operation
NORMAL OPERATION (continued) Condition: Thermostat closed, damper in process of opening STEP 8A TEST FOR 24VAC BETWEEN BLACK AND ORANGE 24VAC is present 24VAC is not present Condition: Thermostat closed, damper fully open STEP 8B TEST FOR 24VAC BETWEEN BLACK AND YELLOW 24VAC is present 24VAC is not present Technical Training Department... - Page 29 TROUBLESHOOTING THE EFFIKAL DAMPER Condition: Thermostat closed, damper closed Wires are from left to right: Black i Yellow i Brown i Orange STEP 9A 24VAC is present 24VAC is not present Technical Training Department Ashland City, TN ©2003 SBD TANK TYPE HEATERS SERVICE HANDBOOK TEST BETWEEN BLACK (COMMON) AND BROWN ON THE DAMPER BOARD...
- Page 30 TROUBLESHOOTING THE EFFIKAL DAMPER (continued) Condition: Thermostat closed, damper open. Damper Service Switch A1 IS CORRECT, CHECK SERVICE SWITCH STEP 9B POSITION Switch is incorrect position Switch is not in correct position Technical Training Department Ashland City, TN ©2003 SBD TANK TYPE HEATERS SERVICE HANDBOOK Open Damper...
- Page 31 TROUBLESHOOTING THE EFFIKAL DAMPER (continued) Condition: Thermostat closed, damper is open fully STEP 10A TEST FOR 24VAC BETWEEN BLACK AND YELLOW 24VAC is present 24VAC is not present Condition: Damper rotates continuously STEP 10B ADJUST END SWITCH TO CAM CONTACT Damper stops in proper position Damper does not stop in proper position Technical Training Department...
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Page 32: Wire Harness Test
STEP 11 STEP 11. WIRE HARNESS TEST. Test for 24 VAC between terminal 24V on the IID module, and 24V GND. 24 VAC is not present: 24 VAC is present: Note: This test may be easier to conduct by removing the red wire from the IID terminal. Test for 24 VAC between the red wire and ground. -
Page 33: Iid Module
STEP 12 STEP 12. IID MODULE TEST (Power to the Pilot Valve). Using a multimeter, test for 24 VAC between terminal PV and 24V (GND) on the IID during the 90 second trial for ignition. The meter does not read 24 VAC and the IID module is not between ignition trials: The meter does read 24 VAC: Technical Training Department... -
Page 34: Pilot Spark
STEP 13 STEP 13. PILOT SPARK TEST. Visually check for spark at the pilot assembly. Note: The pilot burner mounts on the left side of the main burner. The igniter is not sparking: Sparking is present: Power To Module May Be Interrupted To Reset . 90 sec. -
Page 35: Pilot Valve
STEP 14A STEP 14A. PILOT VALVE - OHM TEST. If pilot assembly is sparking but no pilot flame is established, disconnect the pilot valve solenoid leads. Using a multimeter, (set to read ohms) test for 20* ohms resistance +/- 5 through the solenoid coil. The meter dose not read 20 ohms plus or minus 5: The meter does read 20 ohms plus or... -
Page 36: Pilot Valve
STEP 14B The MV/PV wire on the IID is connected to the white wire The MV wire on the IID is connected to the red wire. STEP 14B. PILOT VALVE TEST – SBD 500 ONLY. Testing the two coils of the Honeywell VR8404P 5004 gas valve used on the model SBD 500 only. -
Page 37: Main Burner Test
STEP 15 STEP 15. MAIN BURNER TEST. Visually check for main burner. The main burner ignites: The main burner does not ignite Technical Training Department Ashland City, TN ©2003 SBD TANK TYPE HEATERS SERVICE HANDBOOK MAIN BURNER TEST THEN Sequence is complete Go to step 16... -
Page 38: Flame Rectification
STEP 16 STEP 16. FLAME RECTIFICATION Note: Flame rectification means that an alternating current (AC) signal is changed to a direct current (DC) signal. The pilot flame is the 'switch' which connects the pilot hood to the igniter and ground. If the pilot hood and igniter sensor had the same surface area, the flame 'switch' would conduct an AC signal. - Page 39 STEP 17 Pilot is lit - Sparking has stopped. STEP 17. IID MODULE TEST (Power to the Main Valve). Using a multimeter, test for 24 VAC between terminal MV on the IID and 24V (GND). 24 VAC is not present: 24 VAC is present: Technical Training Department Ashland City, TN ©2003...
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Page 40: Main Gas Valve
STEP 18A STEP 18A. MAIN GAS VALVE CHECK. Disconnect wires from gas valve TH and TR terminals. Using a multimeter, test for 68 ohms plus or minus 5 between TH and TR on the main valve coil. The meter reads ‘O’ or infinity The meter reads 68* ohms plus or minus 5 Technical Training Department Ashland City, TN ©2003... - Page 41 STEP 18B The PV wire is connected to the blue wire The MV/PV wire on the IID is connected to the white wire. The MV wire is disconnected from the gas valve. STEP 18B. MAIN GAS VALVE COIL CHECK – SBD 500 ONLY Condition: Pilot lights Sparking stops...
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Page 42: General Service Chart
CONDITION DAMPER OPENS NO POWER TO IID MODULE . DAMPER NOT FULLY OPEN . DEFECTIVE PROTECTOR SWITCH PILOT LIGHTS, SPARKS PILOT FLAME NOT PROVING CONTINUOUSLY NOT PROVING PILOT HEATER WILL NOT IGNITE FLAME EXISTANCE PILOT GAS NOT COMPLETELY INTERRUPTED AT END OF HEATING CYCLE WEEPING TEMPERATURE . -
Page 43: Questions And Answers
GENERAL QUESTIONS AND ANSWERS What is unique about the Canadian – SBC-CGA – models vs. U.S. SBD models? The Canadian models have different dimensions to meet Canadian code requirements. How much electrical power is required for a SBD water heater? The SBD models draw approximately .7 Amps at 120VAC. -
Page 44: Parts List
SBD TANK TYPE HEATERS SERVICE HANDBOOK SBD MODELS 120 THRU 500A SERIES 110-111 PARTIAL REPLACEMENT PARTS LIST MODELS SBD 120 THRU 500A: STANDARD AND ASME (A) SERIES 110/111 EFFIKAL DAMPER DRIVE ASSEMBLY GAS VALVES HONEYWELL VALVE SBD 500A WHITE RODGERS VALVE SBC 120 – 400A Technical Training Department Ashland City, TN ©2003... - Page 45 SBD TANK TYPE HEATERS SERVICE HANDBOOK SBD MODELS 120 THRU 500A (continued) SERIES 110-111 Technical Training Department Ashland City, TN ©2003...
- Page 46 SBD MODELS 120 THRU 500A (continued) ITEM PARTS 1 ...Flue Baffle ... 193595... 192199-3... 193795-1 ... 193696 ...193696 3 ...Main Burner Orifice Bracket... 98044(3) ... 98044(3)... 98044(5)... 98044(5)...98044(5) 4 ...Main Burner ... 98047... 98047 ... 98047 ... 98047 ...98047 5 ...Main Burner w/Pilot Bracket... 193873-1... 193873-1... 193873-1 ... 193873-1 ...193873-1 6 ...Pilot Burner, Natural ...
- Page 47 SBD MODELS 120 THRU 500A (continued) ITEM PARTS SBD81190NE ITEM PARTS DESCRIPTION 1 ...Flue Baffle ... 193795-1... 193889... 193595 ...193595...193945 3 ...Main Burner Orifice Bracket... 98044(5)... 98044(5) ... 098044(5) ...098044(7) ...098044(5) 4 ...Main Burner ... 98047 ... 98047... 98047 ...98047...98047 5 ...Main Burner w/Pilot Bracket...
- Page 48 SBD MODELS 120 THRU 500A (continued) ITEM PARTS DESCRIPTION 1 ... Flue Baffle...193595... 193696 ... 193995... 193995 3 ... Main Burner Orifice Bracket...098044(7) ... 098044(9)... 098044(9) ... 098044(9) 4 ... Main Burner ...192322... 98047 ... 192322... 192322 5 ... Main Burner w/Pilot Bracket...193873... 193873-1... 193873... 193873 6 ...
- Page 49 SBD MODELS 120 THRU 500A (continued) ITEM PARTS DESCRIPTION 1 ... Flue Baffle...193595...192199-3 ... 193795-0 ... 193696 3 ... Main Burner Orifice Bracket ...98044(3) ...98044(3) ... 98044(5)... 98044(5) 4 ... Main Burner ...98047...98047 ... 98047 ... 98047 5 ... Main Burner w/Pilot Bracket ...193873-1 ...193873-1 ... 193873-1 ... 193873-1 6 ...
- Page 50 SBD MODELS 120 THRU 500A (continued) ITEM PARTS DESCRIPTION 1 ... Flue Baffle...193889 ...193595 ...193595... 193945...193595 3 ... Main Burner Orifice Bracket ...98044(5) ...98044(5) ...98044(7) ... 98044(5) ...98044(7) 4 ... Main Burner ...98047 ...98047 ...98047... 98047...192322 5 ... Main Burner w/Pilot Bracket...193873-1 ...193873-1 ...193873-1 ... 193873-1...193873 6 ...
- Page 51 SBD MODELS 120 THRU 500A (continued) ITEM PARTS DESCRIPTION 1 ... Flue Baffle... 193945 ...193995... 193995 3 ... Main Burner Orifice Bracket ... 098044(9)...098044(9) ... 098044(9) 4 ... Main Burner ... 98047 ...192322... 98047 5 ... Main Burner w/Pilot Bracket... 193873-1 ...193873-1 ... 193873-1 6 ...
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Page 52: Component Part Information
COMPONENT PART INFORMATION NAME DUAL CONTROLLER THERMOST HIGH LIMIT GAS VALVE NATURAL PROPANE INTERMITENT NATURAL IGNITION GAS AND DEVICE PROPANE CONTROL DAMPER COMPLETE ASSEMBLY MOTOR P.C. BOARD W/RELAY TRANSFORMER Technical Training Department Ashland City, TN ©2003 SBD TANK TYPE HEATERS SERVICE HANDBOOK SPECIFICATIONS 120-180... -
Page 53: Service Agent
SBD SERVICE CHECKLIST (This service checklist may be photo copied to assist with SBD service call.) This checklist is intended to aid the Service Agent in determining that the State SBD Water Heater has been properly installed and is operating correctly. circumstances of each installation may vary greatly, it is not intended to be an all- inclusive list of the problems that the Service Agent may encounter. -
Page 54: Service Check List
WATER PIPING Is the system properly sized? Is the system properly installed? Are there any water leaks? Does the installation have a recirculating system? If so, is it operational? PROPER SEQUENCE OF OPERATION During standby does damper close on standby? During standby is pilot flame off? On a call for heat does thermostat close? On a call for heat does damper open completely? -
Page 55: Comments
SBD TANK TYPE HEATERS SERVICE HANDBOOK COMMENTS Author: Terry Mulder Technical Training Department Ashland City, TN ©2003... - Page 56 Prepared by the State Water Heaters Training Department. For additional technical information call 800-365-0577. State Water Heaters 500 Tennessee Waltz Parkway Ashland City, TN 37015 COMMERCIAL 800-365-8170 The Expert’s Choice® www.statewaterheaters.com ©Copyright 2006 State Industries, Inc.
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