Instruction/ maintenance manual of the product SBD71 120 State Industries
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MODELS COVERED SBD71 120 Through SBD85 500 T h e Ex p e r t’ s C h o ic e® COMMERCIAL T h e Ex p e r t’ s C h o ic e® COMMERCIAL Self Cleaning Commercial Gas W ater Heaters with Flue Damper and Electronic Ignition Part Number STC-072 Printed in the U.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 1 SBD HANDBOOK TABLE OF CONTENTS PAGE PAGE Troubleshooting (continued) Introduction 1-2 Troubleshooting the.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 2 Qualifications: Installation or service of this wa ter 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.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 3 INSTALLATION This portion of the handbook will review some oft en overlooked installation considerations, taking note of necessary installation requirements for the SBD 71120 through SBD 85500 model heaters.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 4 EXTERIOR CLEARANCE This illustrates the exterior roof clearances for SBD units with natural draft venting.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 5 AIR FOR COMBUSTION 10 CUBIC FEET OF AIR PER 1,000 BTU Stoichiometric or theoretical complete com bustion requires 10 cubic feet of air per 1000 BTUH input of the gas input.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 6 MAKE-UP AIR DIRECT COMMUNICATION A fresh supply of make-up air for combusti on can be supplied to t he heater through make- up air ducts which directly communicate wit h the out of doors.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 7 MAKE-UP AIR VERTICAL DUCTS 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 enclosu re.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 8 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.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 9 CONTAMINATED AIR Along with adequate make-up air, the quality of the air is important. Contaminants in combustion air can lead to premature heat er failure.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 10 GAS PRESSURE REQUIREMENTS Natural Gas Propane Gas Maximum Supply Pressure 10.5" W.C. 13.8" W.C. Minimum Supply Pressure 5.0" W.C. 11" W.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 11 SBD 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.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 12 VENTING Atmospheric, Single, and Multiple Heaters All SBD water heaters are classified by ANSI as category I (non-condensing, negative pressure venting) appliances.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 13 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.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 14 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.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 15 POWER VENT KITS FOR SIDEWALL VENTING Water Heater Models Part Number SBD-120-200 193933-0 SBD-250-500 193933-1 SBD water heaters can be used with power vent kits for sidewall venting.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 16 SBD SEQUENCE OF OPERATION 1. Thermostat calls for heat 2. Flue damper opens 3. Intermittent Ignition Control 5. Main gas valve opens 7. Thermostat satisfies 4.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 17 SBD ELECTRICAL SEQUENCE 100 – 109 Series.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 18 SBD ELECTRICAL SEQUENCE OF OPERATION 115/60/12A IID Module (24V) Receives Voltage Module (PV) Terminal S.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 19 TROUBLESHOOTING SBD WATER HEATERS To troubleshoot a SBD water heater check that: • 120 VAC is supplied.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 20 STEP 2 HIGH LIMIT, LEFT TERMINAL TEST STEP 2. HIGH LIMIT, LEFT TERMINAL TEST. Test for 24 VAC between the left high limit terminal and ground. IF THEN The meter does not read 24 VAC: • Check wiring between transformer and high limit.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 21 STEP 3 TEST HIGH LIMIT RIGHT TERMINAL STEP 3. TO TEST HIGH LIMIT RIGHT TERMINAL . Ensure that the jumper wire between the high limit and thermostat is c onnected, and the damper motor power line is connected.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 22 STEP 4 INSPECT THE DAMPER STEP 4. INSPECT THE DAMPER. Lower the thermostat setting so the unit will not be calling for heat, then inspect the damper. IF THEN If the damper is open: • Go to step 5.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 23 STEP 6 PC BOARD MOTOR TEST 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.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 24 STEP 7 THERMOSTAT TEST STEP 7. THERMOSTAT TEST. Set the thermostat to call for heat. Using your multimeter, test for 24 VAC between right terminal and ground.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 25 EFFIKAL DAMPER The wiring colors from the damper PC Board ar e 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.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 26 HARNESS CHART Heater Harness Function Damper Harness Black 24V Hot 1-Brown Yellow 24V from Thermostat 2-.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 27 NORMAL OPERATION (continued) Condition: • Thermostat closed, damper in process of opening STEP 8A TEST FOR 24VAC BETWEEN BLACK AND ORANGE IF THEN 24VAC is present Continue to Step 8B.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 28 TROUBLESHOOTING THE EFFIKAL DAMPER Condition: Thermostat closed, damper closed STEP 9A TEST BETWEEN BLAC.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 29 TROUBLESHOOTING THE EFFIKAL DAMPER (continued) Condition: Thermostat closed, damper open. STEP 9B A1 IS CORRECT, CHECK SERVICE SWITCH POSITION IF THEN Switch is incorrect position Replace damper board/motor assembly.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 30 TROUBLESHOOTING THE EFFIKAL DAMPER (continued) Condition: Thermostat closed, damper is open fully STEP 10A TEST FOR 24VAC BETWEEN BLACK AND YELLOW IF THEN 24VAC is present This is correct – continue to Step 11 24VAC is not present • See Step 9B.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 31 STEP 11 WIRE HARNESS TEST STEP 11. WIRE HARNESS TEST. Test for 24 VAC between terminal 24V on the IID module, and 24V GND. IF THEN 24 VAC is not present: • Check the wiring harness.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 32 STEP 12 IID MODULE TEST STEP 12. IID MODULE TEST (Power to the Pilot Valve). Using a multimeter, test for 24 VAC between terminal PV and 24V (GND) on t he IID during the 90 second trial for ignition.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 33 STEP 13 PILOT SPARK TEST 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.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 34 STEP 14A PILOT VALVE - OHM TEST SBD 120 – 400 GAS VALVE STEP 14A. PILOT VALVE - OHM TEST. If pilot assembly is sparking but no pilot flame is established, disconnect the pilot valve solenoid leads.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 35 STEP 14B PILOT VALVE TEST – SBD 500 ONLY 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.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 36 STEP 15 MAIN BURNER TEST STEP 15. MAIN BURNER TEST. Visually check for main burner.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 37 STEP 16 FLAME RECTIFICATION STEP 16. FLAME RECTIFICATION Note: Flame rectification means that an alternating cu rrent (AC) signal is changed to a direct current (DC) signal.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 38 STEP 17 IID MODULE TEST 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).
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 39 STEP 18A MAIN GAS VALVE CHECK SBD 120 – 400 GAS VALVE 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.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 40 STEP 18B MAIN GAS VALVE COIL CHECK STEP 18B. MAIN GAS VALVE COIL CHECK – SBD 500 ONLY Condition: • P.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 41 GENERAL SERVICE CHART CONDITION CAUSE SOLUTION DAMPER OPENS NO POWER TO IID MODULE . DAMPER NOT FULLY OPEN . DEFECTIVE PROTECTOR SWITCH .EFFIKAL – REPLACE DAMPER CONTROL ASSEMBLY .
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 42 GENERAL QUESTIONS AND ANSWERS Q. What is unique about the Canadian – SBC-CGA – models vs. U.S. SBD models? A. The Canadian models have different dimensions to meet Canadian code requirements.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 43 SBD MODELS 120 THRU 500A SERIES 110-111 GAS VALVES HONEYWELL VALVE SBD 500A EFFIKAL DAMPER DRIVE ASSEMBL.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 44 SBD MODELS 120 THRU 500A (continued) SERIES 110-111.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 45 SBD MODELS 120 THRU 500A (continued) SERIES 110-111 Series 110-111 1 ..........Flue Baffl e ................................. 193595 .............. 192199-3 .
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 46 SBD MODELS 120 THRU 500A (continued) SERIES 110-111 ITEM PARTS DESCRIPTION SBD81190NE S BD100199NES/A SBD100250NE/A S BD65251NE/A SBD100275NE/A 1 .........
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 47 SBD MODELS 120 THRU 500A (continued) SERIES 110-111 1 ........... Flue Baffle ........................................ 193595 ....................... 193696 .
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 48 SBD MODELS 120 THRU 500A (continued) SERIES 110-111 CGA CGA CGA CGA 1 ............. Flue Baffle ...................................... 193595........... 192199-3 .
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 49 SBD MODELS 120 THRU 500A (continued) SERIES 110-111 1 ............ Flue Baffle ..................................... 193889 ............ 193595 ...........
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 50 SBD MODELS 120 THRU 500A (continued) SERIES 110-111 1 ............ Flue Baffl e ................................................... 193945 ................
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 51 COMPONENT PART INFORMATION NAME SPECIFICATIONS STATE PART NUMBERS DUAL CONTROLLER THERMOST AT 120-180 O .
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 52 SBD SERVICE CHECKLIST (This service checklist may be photo copied to assist with SBD service call.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 53 V. WATER PIPING Is the system properly sized? yes no Is the system properly installed? yes no Are there any water leaks? yes no Does the installation have a recirculating system? yes no If so, is it operational? yes no VI.
SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 54 COMMENTS Author: Terry Mulder.
MODELS COVERED SBD71 120 Through SBD85 500 T h e Ex p e r t’ s C h o ic e® COMMERCIAL T h e Ex p e r t’ s C h o ic e® COMMERCIAL Self Cleaning Commercial Gas W ater Heaters with Flue Damper and Electronic Ignition Part Number STC-072 Printed in the U.
An important point after buying a device State Industries SBD71 120 (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 Industries SBD71 120 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 Industries SBD71 120 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, State Industries SBD71 120 you will learn all the available features of the product, as well as information on its operation. The information that you get State Industries SBD71 120 will certainly help you make a decision on the purchase.
If you already are a holder of State Industries SBD71 120, 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 Industries SBD71 120.
However, one of the most important roles played by the user manual is to help in solving problems with State Industries SBD71 120. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device State Industries SBD71 120 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
