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Honeywell L408J1009 SPDT Vaporstat Controller 0-16OZ

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Special Price $382.53 Regular Price $424.61
In stock
SKU
L408J1009

The L408J1009 from Honeywell is a precision-engineered controller designed to enhance the efficiency of HVAC systems. The L408J1009 from Honeywell efficiently controls temperature levels within heating equipment, guaranteeing peak performance and facilitating significant energy conservation. Specifically engineered for integration into boilers, the L408J1009 facilitates smooth operation and precise temperature control. Its advanced technology minimizes energy consumption while maximizing heating effectiveness, resulting in reduced utility costs for homeowners. With quick and seamless installation, this controller minimizes downtime and restores HVAC systems to optimal operation swiftly. Experience improved comfort, enhanced energy efficiency, and reliable performance with the installation of the L408J1009 by Honeywell.

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HVAC Controls & Electrical, Control Boards & Modules
Manufacturer:
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Manufacturer Name: Honeywell
Product Number: L408J1009
OEM Part Number: L408J1009
Product Description: 0-16Oz. Vaporstat Spdt
Weight:2.74lbs/1242.84g

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Product Questions (2)
Customer Questions
What maintenance is required for the Honeywell L408J1009 Vaporstat Controller?

Inspect the vaporstat controller regularly for loose wiring, clogged pressure connections, or inaccurate pressure settings affecting steam system operation. Verify switch response and differential adjustment during the inspections. Keep the case clean and dry, and periodically test the pressure control function to maintain safe low-pressure steam performance.

What are common issues with the Honeywell L408J1009 Vaporstat Controller?

  • Pressure control failing to switch at set points.
  • Inaccurate pressure readings from clogged loops.
  • Differential adjustment drifting out of calibration.
  • Intermittent switch contact operation.

Installation Steps

Step 1: Turn off power to the system and relieve all pressure before starting.

Step 2: Mount the vaporstat controller on the pressure control tapping using proper fittings.

Step 3: Connect wiring to the terminals per the system diagram.

Step 4: Set the desired pressure cut-in and differential using adjustment screws.

Step 5: Restore power and test operation, checking for leaks and proper pressure control.