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Johnson Controls A19ABC-36 SPDT Remote Bulb Temperature Control -30 To 100°F 20" Capillary Adjustable Differential

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Special Price $179.27 Regular Price $206.16
In stock
SKU
A19ABC-36
The Johnson Controls A19ABC-36 SPDT Remote Bulb Temperature Control is used to regulate temperatures in different HVAC systems. It uses a bulb mounted at a remote position which contains a liquid that changes its volume with temperature. This change is transmitted through a long, thin capillary tube to a switch mechanism in the main unit. When the set temperature is met, the switch turns on or off your HVAC systems such as furnaces, air conditioning units or ventilation fans. The A19ABC-36 has a temperature range adjustment from -30°F to 100°F with an adjustable differential from 3°F to 12°F. The capillary of 20 feet allows the sensor bulb to be placed at other prime locations, away from the main unit and heat generating appliances.
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HVAC Controls & Electrical, Control & Sensing Devices
Manufacturer:
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Specifications

  • Temperature: -30°F/100°F
  • Weight: 1.19lbs
  • Capillary Length: 20Ft
  • Control Output: SPDT
  • Type: Remote Bulb
Manufacturer Name: Johnson Controls
Product Number: A19ABC-36
OEM Part Number: A19ABC-36
Product Description: -30/100F,20'Cap,Spdt,Adj.Dif
Weight:1.19lbs/539.77g

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Product Questions (2)
Customer Questions
What maintenance is required for the Johnson Controls A19ABC-36 Remote Bulb Temperature Control?

Inspect capillary tube and sensing bulb regularly for damage or leaks. Keep contacts clean and verify calibration to ensure accurate temperature control. Perform periodic testing, avoid physical stress, and ensure better electrical isolation.

What are common issues with the Johnson Controls A19ABC-36 Remote Bulb Temperature Control?

  • Bulb or capillary leaks causing loss of sensing accuracy and erratic readings.
  • Contacts damage leading to inconsistent or failed switching and intermittent operation.
  • Calibration drift resulting in incorrect temperature control operation and Less regulation.
  • Loose wiring or terminal connections causing intermittent control failure.

Installation Steps

Step 1: Shut off electrical supply and confirm the system has no power before starting.

Step 2: Allow the equipment to reach ambient temperature for safe handling.

Step 3: Remove cover and disconnect existing wiring and capillary carefully.

Step 4: Mount the new control in the same position and secure firmly.

Step 5: Route bulb into sensing area and reconnect wiring terminals as marked.

Step 6: Restore power and test temperature response and differential adjustment.