State Industries SBD85 500, SBD71 120 manual Pilot Valve Test SBD 500 only

Page 36

SBD TANK TYPE HEATERS

SERVICE HANDBOOK

STEP 14B

PILOT VALVE TEST – SBD 500 ONLY

PILOT GAS

MANIFOLD

PRESSURE

TAP

BLUE

WHITE

RED

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.

MANIFOLD

MANIFOLD

GAS

PRESSURE

 

 

TAP

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, it is difficult to test for ohms resistance through these coils. The following is a DC amperage check of the main and pilot coils.

Condition:

•Tank calls for heat

•PV terminal of module has 24 Vac

•No Pilot flame

Test Procedure:

•Turn off power to heater

•Meter set to test for DC amperage (on meters, the black wire is in the “com” port, the red wire is in the “10A” port, the dial is set to 20M/10A in the DC AMP test area).

•Blue “PV” wire is disconnected from the ignition PV terminal.

•Install meter in series between gas valve and ignition module – 10A wire to blue gas valve lead, common wire to PV module terminal.

•Turn power on to heater, after module receives 24V

Test DC Amperage through Pilot coil of gas valve

IF

 

THEN

.75 to .85

DCA is not present:

•

Replace the gas valve

.75 to .85

DCA is present

•

Pilot should work if gas (not air) is present to pilot

Power off, reattach blue gas valve wire to PV terminal of module.

Technical Training Department

35

Ashland City, TN ©2003

Page 35 Page 37
Image 36
Page 35 Page 37
Contents SandBlaster SBD Tank Type Heaters Service Handbook SBD HandbookModel Breakdown SBD 85 500 P E a CGA D Installation Clearances from CombustiblesModel Exterior Clearance AIR for Combustion Cubic Feet of AIR PER 1,000 BTU Excess AIRMAKE-UP AIR Direct CommunicationVertical Ducts Horizontal DuctsInsufficient MAKE-UP AIR BackdraftContaminated AIR AIR for CombustionSupply Gas Manifold Pressure Tap Dirt Leg Gas Port GAS Pressure RequirementsSBD GAS Valve Venting Atmospheric, Single, and Multiple HeatersNine Rules for Good Vents Nine Rules for Good Vents Power Vent Kits for Sidewall Venting SBD Sequence of Operation Sequence of OperationSBD Electrical Sequence SBD Electrical Sequence of Operation Troubleshooting SBD Water Heaters Test the TransformerThen High LIMIT, Left Terminal Test Ground 24 VAC FM TransformerTest High Limit Right Terminal Damper MotorInspect the Damper Check the PC BoardService Switch Motor Lead PC Board Motor TestThermostat Test Effikal Damper Harness Chart Normal OperationTest for 24VAC Between Black Common and Brown Test for 24VAC Between Black Common and Brown ThenTest for 24VAC Between Black and Orange Test for 24VAC Between Black and YellowTroubleshooting the Effikal Damper Test Between Black Common and Brown on the Damper BoardA1 is CORRECT, Check Service Switch Position Adjust END Switch to CAM Contact Wire Harness Test IID Module Test Pilot Spark Test Pilot Valve OHM Test SBD 120 400 GAS ValvePilot Valve Test SBD 500 only Pilot GAS Manifold Pressure TAP Blue White REDMain Burner Test Flame Rectification Flame RectificationPilot is lit Sparking has stopped Main GAS Valve Check Main GAS Valve Coil Check Main GAS Valve Coil Check SBD 500 onlyGeneral Service Chart General Questions and Answers SBD Models 120 Thru 500A Series 110/111SBD Models 120 Thru 500A Series SBD Models 120 Thru 500A Series SBD Models 120 Thru 500A Series SBD Models 120 Thru 500A Series SBD Models 120 Thru 500A Series SBD Models 120 Thru 500A SBD Models 120 Thru 500A Series Name Specifications Component Part InformationSBD Service Checklist Natural PropaneWater Piping Comments Author Terry MulderCommercial
Related manuals
Manual 56 pages 57.8 Kb

SBD85 500, SBD71 120 specifications

State Industries has long been recognized as a leader in the manufacturing of water heaters and other thermal products, and its SBD85 500 and SBD71 120 units are prime examples of their innovative approach to energy efficiency and performance. These models are designed to meet diverse residential and commercial needs, showcasing the company's commitment to quality, reliability, and advanced technology.

The SBD85 500 model is an electric water heater designed to deliver an impressive capacity of 85 gallons. It features a glass-lined tank that provides durability and long-lasting performance. The insulation is a key characteristic, as it minimizes heat loss, thereby enhancing energy efficiency. One of the standout technologies integrated into this unit is the high-efficiency heating elements, which ensure rapid heating of the water while consuming minimal energy.

Furthermore, the SBD85 includes adjustable thermostats that allow users to customize their water temperatures according to specific needs. This feature not only improves user comfort but also contributes to lower energy bills by allowing for more efficient energy use. The model is engineered to operate quietly, making it an ideal choice for residential applications where noise levels can be a concern.

On the other hand, the SBD71 120 offers a more compact solution with a capacity of 71 gallons, making it suitable for smaller spaces while still providing robust performance. This model is equally energy-efficient, benefiting from similar technologies such as high-quality insulation and advanced heating elements. The SBD71 is particularly noted for its compact design, which allows for installation in tight areas without compromising on performance.

Both models are built with user-friendly features, including easy connections for water and electrical supply, and clear indicators for maintenance needs. Safety is also a priority in the design of these units, with built-in temperature relief valves to prevent overheating and pressure buildup.

In conclusion, the State Industries SBD85 500 and SBD71 120 water heaters embody the company's dedication to quality and technological advancement. Whether for a large household or a smaller living space, these models provide efficient, reliable hot water solutions tailored to meet the demands of modern consumers. With their advanced features and exceptional performance, they represent a smart investment in energy efficiency and long-term value.
Top Page Image Contents