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A+ Series Air Coolers
A+B Coil Block with Drain Pan
Custom Industrial Evaporator Coil Block
Designed for applications where a complete packaged air cooler is not required, Colmac Coil A+B units combine a custom-engineered evaporator coil with an integrated drain pan for use in specialized industrial refrigeration systems.
Available in capacities from 5 to 100 TR, the A+B provides a flexible foundation for mini-penthouses, blast freezers, critical process air handlers, and other custom refrigeration equipment.
Each A+B is engineered around the required capacity, working fluid, operating temperature, coil construction, circuiting, and installation requirements of the application.
The A+B is intended for applications where the heat exchanger needs to integrate into a larger custom system rather than operate as a conventional packaged evaporator. Custom sizes are available to match project-specific equipment and installation requirements.
Materials of Construction
Tube Material
Aluminum
304 stainless steel tubing
316 stainless steel tubing
Fin Material
Aluminum
Epoxy coated aluminum
304 stainless steel
316 stainless steel
Casing Material
G-235 galvanized steel
304 stainless steel
316 stainless steel
Defrost Options
Air
Hot Gas
Electric
Circuiting & Refrigeration Upgrades
Low-Temperature, Low-Charge DX Ammonia
Available for direct expansion ammonia systems where reducing refrigerant charge is an important design objective.
Smart Hot Gas Defrost
Optional Smart Hot Gas Defrost provides an engineered defrost solution for applications requiring reliable frost removal during low-temperature operation.
Custom Coil Circuiting
Coil circuiting can be engineered around the selected working fluid, refrigeration capacity, operating temperatures, and pressure-drop requirements of the project.
Anti-Microbial Coil Construction
Available for food processing and other applications where enhanced sanitation and hygienic material selection are important.
Certifications & Warranties
ASME "U" Stamp
ASME Section VIII requirements for pressure-containing equipment
CRN/CSA
Canadian Registration Number (CRN) and CSA certifications available for applications requiring compliance with Canadian pressure vessel and refrigeration equipment regulations
UL 207
UL 207 standards for refrigerant-containing components and accessories, verifying compliance with recognized refrigeration system safety requirements.
Warranty
Colmac Coil warrants its products to be free from defects in materials and workmanship under normal operating conditions. Standard warranty coverage includes repair or replacement of defective components in accordance with Colmac warranty terms. Pressure-bearing stainless steel coil components manufactured in accordance with ASME B31.5 are eligible for extended warranty coverage of up to five years from shipment date.
Applications
Mini-Penthouse Systems
Blast Freezers
Blast Chillers
Critical Process Air Handlers
Custom Refrigeration Systems
OEM Refrigeration Equipment
Custom-Sized Evaporator Applications