Description
This is a new Suburban 521135 Ignition Control Circuit Board, designed specifically for the Suburban IW60 On Demand RV water heater.
The 521135 control board operates on 12 Volt DC power and manages ignition and system functions for the IW60 tankless water heater, excluding blower control components. Engineered to match original equipment specifications, this board restores dependable ignition performance and consistent hot water operation.
Built for RV applications (non-marine use), this ignition control module delivers reliable performance and long-term durability in Suburban’s on-demand water heating systems.
Compatible Model
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Suburban IW60 On Demand Water Heater
Key Specifications
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Manufacturer: Suburban
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Manufacturer Part Number: 521135
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Product Type: Ignition Control Circuit Board
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Voltage: 12 Volt DC
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Length: 5 Inches
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Width: 5 Inches
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With Protective Cover: No
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Marine Use: No
Features & Benefits
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Direct Replacement Control Board for IW60
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Controls All Functions Except Blower Operation
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Restores Reliable Ignition and System Performance
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Built to Match OEM Specifications
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Designed for RV On-Demand Water Heater Systems
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Easy Installation
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Limited 90-Day Supplier Warranty
Manufacturer-confirmed compatibility
Suburban lists control-board MPN 521135 specifically for Nautilus IW60. Its IW60RL parts schedule calls out module board 521212, so the two numbers should not be assumed interchangeable. Confirm the exact heater model and board identifier; electronics are sensitive to wiring and power compatibility.
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Related Parts Diagrams & Model References
The related diagrams below may show this part number or associated components but do not guarantee compatibility with your specific RV or appliance. Compare the compatibility information provided in the product description and always verify the manufacturer part number and model before ordering.
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