State Water Heaters SBD85 500 - Manuals

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. The vent shall extend at least 3 feet above the highest point where it passes through a roof of a b...

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 combustion requires 10 cubic feet of air per 1000 BTUH input of the gas input. The National Fuel Gas Code also re...

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 combustion can be supplied to the heater through make- up air ducts which directly communicate with the out of doors. Two openings are requ...

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 siz...

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 heater failure. Vapors from bleaches, soaps, waxes, salts, etc. ar...

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.C. Manifold Pressure 4.0 " W.C. 10" W.C. The ...

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. The i...

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. They are approved for type B vent. For l...

SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 15 POWER VENT KITS FOR SIDEWALL VENTING 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 ...

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. Pilot gas opens, Pilot sparks and flame prove...

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

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 to the heater • the tank is full of water • gas is supplied to the unit STEP 1 TEST THE TRANSFORMER ST...

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. N E H T F I The meter does not read 24 VAC: • Check wiring bet...

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. N E H T F I If the damper is open: • Go to step 5. If t...

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. N E H T F I 24 VAC is not present: • Repla...

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. N E H T F I The meter does not read 24 VAC and...

SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 25 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 o...

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-Orange Red 24V from damper 3-Yellow White 24V common 4-Black NORMAL OPERATION Condition: • Heater on ...

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 N E H T F I . B 8 p e t S o t e u n it n o C t n e s e r p s i C A ...

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 BLACK (COMMON) AND BROWN ON THE DAMPER BOARD N E H T F I t c e rr o c s i s i h T t n e s e r p s i C A V...

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 N E H T F I Switch is incorrect position Replace damper board/...

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. N E H T F I 24 VAC is not present: • Check the wiring harness. 24 VAC is present: ...

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 the IID during the 90 second trial for ignition. N E H ...

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. N E H T F I The igniter is not sparkin...

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. Using a...

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. Because of built in diodes,...

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. N E H T F I The main burner ignites: • Sequence is complete The main burner does not ignite • Go to step 16

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 current (AC) signal is changed to a direct current (DC) signal. The pilot flame is the 'switch' ...

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). N E H T F ...

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 an...

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: • Pilot lights • Sparking stops • No main burner ignition Test Procedure: • Power off • Disconnect red, main...

SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 41 GENERAL SERVICE CHART N O I T U L O S E S U A C N O I T I D N O C DAMPER OPENS NO POWER TO IID MODULE . DAMPER NOT FULLY OPEN . DEFECTIVE PROTECTOR SWITCH .EFFIKAL – REPLACE DAMPER CONTROL ASSEMBLY . REPLA...

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. Q: How much e...

SBD TANK TYPE HEATERS SERVICE HANDBOOK Technical Training Department Ashland City, TN ©2003 51 COMPONENT PART INFORMATION NAME SPECIFICATIONS DUAL CONTROLLER THERMOST AT 120-180 O RANGE, + 4 O , 5 O DIFFERENTIAL, LIQUID FILLED, ANTI- STACKING HIGH LIMIT (ECO) OPENS - 205 O FIXED, MANUAL RESET BELOW ...

SBD TANK TYPE HEATERS SERVICE HANDBOOK t n e m t r a p e D g n i n i a r T l a c i n h c e T Ashland City, TN ©2003 52 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 TANK TYPE HEATERS SERVICE HANDBOOK t n e m t r a p e D g n i n i a r T l a c i n h c e T Ashland City, TN ©2003 54 COMMENTS Author: Terry Mulder

State Water Heaters 500 Tennessee Waltz ParkwayAshland City, TN 37015800-365-8170www.statewaterheaters.com Prepared by the State Water Heaters Training Department. For additional technical information call 800-365-0577. ©Copyright 2007 State Industries, Inc. COMMERCIAL The Expert’s Choice®