Johnson Controls A19ABC-42C Immersion Hot Water Control

Johnson Controls A19ABC-42C Immersion Hot Water Control provides precise temperature management for hydronic heating, air conditioning, and refrigeration systems. Built for reliability, it handles rapid temperature changes with an adjustable differential, helping to minimize energy use and follow system demands.

Key specs include a broad temperature range of 100 to 240°F, a maximum temperature rating of 290°F, and SPDT contact configuration. It supports a contact rating of 24–600 VAC and 125 VA, making it versatile for many control circuits. The enclosure is a gray baked enamel on cold-rolled steel, designed for durable service in equipment bays.

• Adjustable differential for accurate boiler and loop control
• Temperature range 100–240°F (monitoring and cycling flexibility)
• Maximum temperature rating 290°F for safety margins
• SPDT contacts for versatile wiring
• 24–600 VAC, 125 VA contact rating
• Gray baked enamel on cold-rolled steel enclosure for durability
• Applications: hydronic heating, air conditioning, refrigeration