The new ultra-high efficiency X4 Series refrigeration units from Carrier Transicold include the 7500 and 7300 single-temperature belt-driven models. Respectively, the new units provide 68,000 and 66,000 BTUs of cooling at a setpoint of 35 degrees F (100 degrees F ambient). Both X4 units meet 2013 Tier 4 emissions requirements from the U.S. Environmental Protection Agency.
Compared to the Carrier Transicold X2 2100 and 2500 series models they succeed, the new X4 units:
• Weigh 30 lbs. less at 230 lbs.
• Provide 3% to 10% higher cooling capacity (depending on model)
• Achieve up to 20% faster pulldown
• Consume 5% to 22% less fuel over a full range of operating conditions; and up to 35% less fuel during pulldown
• Require 24% less refrigerant
• Operate at up to 18% slower speeds and reduce engine runtime by up to 15%
System improvements in the X4 models include optimized V-Force fans and Novation micro-channel condenser coils. An electronic expansion valve is now standard, replacing mechanical expansion valves found on previous models. The units feature Carrier’s 2.2 liter engine with sensors and an electronic control module that communicates with the company’s APX control system. Fleets will also have the ability to equip X4 units with an optional engine emissions system to provide future compliance in California.
