TJERNLUND UC1 Universal Interlock Control Module

Description:

The TJERNLUND UC1 Universal Interlock Control Module is used in mechanical draft and combustion air systems to safely interlock heating equipment with power venters, draft inducers, and combustion air in-forcers. Commonly installed on gas- and oil-fired furnaces, boilers, water heaters, and unit heaters requiring a universal 120 VAC interlock controller. Maintenance teams, HVAC contractors, and OEMs use this control module for system integration, retrofit, or replacement of draft control and burner interlock modules.

Applications:

The TJERNLUND UC1 Universal Interlock Control Module is commonly used with TJERNLUND HS, HSJ, SS, GPAK, and other compatible draft systems in residential, commercial, and light industrial HVAC applications. The module provides burner interlocking, adjustable pre- and post-purge timing, fan prover monitoring, diagnostic LED indicators, and support for 24 VAC, 115 VAC, or dry-contact burner control circuits.

Technical Specifications:

• Manufacturer: TJERNLUND
• Model: UC1
• Product type: Universal interlock control module
• Input voltage: 120 VAC ±10%
• Frequency: 50/60 Hz
• Control compatibility: 24 VAC, 115 VAC, and dry-contact burner control circuits
• Maximum motor load: 3/4 HP (commonly applied); relay rated up to 1 HP at 120 VAC
• Features: Adjustable pre-purge and post-purge timing
• Indicators: LED diagnostic and status indicators
• Safety interface: Fan prover input and burner interlock control
• Mounting: Panel/enclosure mount
• Application: Power venters, draft inducers, and combustion air in-forcers

Common Replacements:

• TJERNLUND UC1 Version X.04
• TJERNLUND UC1 Version X.06
• TJERNLUND MAC1E