Explosion Proof Wall Mounted Cooling Unit

Marc WPAX Series   Redundant Wall Mounted Combination Cooling Unit 

and Pressurization Systems (Electric Heat) for Use in Industrial and/or 

Hazardous Applications 

Cooling Capacity :   48,000~ 72,000 Btu/h (14.0Kw ~ 21.0 Kw)  

Heating Capacity :   14,000~ 76,000 Btu/h (4.1Kw ~ 22.2 Kw)   

STANDARD FEATURES:

Factory certified for compliance to applicable codes and standards

Spark resistant fan and blower construction

EPA approved HFC type refrigerants

Single cut-out requirement for building wall

100% redundancy via individual, removable HVAC units mounted onto single skid

Supply and return air registers for ductless air handling

Through-the-wall controls section for indoor access to operating controls

Built-in, automatic controls and equipment to manage safe air and maintain 

positive pressure and purge air flow to meet NFPA 496, Type X, Y, or Z 

equirements for the space Protective coatings for prolonged life of cabinet and chassis

OPTIONS:

Redundant nominal cooling from dual 4 tons to dual 25 tons

Electric heat (limited by temperature code and system size)

Single or three phase operation in 60 or 50 Hz applications

Configurable for operation in various non-hazardous and hazardous rated locations

Type 304 or 316 stainless steel cabinet and chassis for corrosion protection

Corrosion resistant coatings for refrigerant coils and tubing (proven to 

withstand 10,000 hours of salt spray test)

Protective component coatings for prolonged life in corrosive environments

Totally Enclosed Fan-Cooled (TEFC) motors

Advanced chemical filtration packages

Fresh air stack with bird screen and rain cap

Supply duct connection and optional ductwork for building interior

Low/High ambient packages for operation in extreme environments

APPLICATIONS:

Environmental control

Control rooms, living quarters, plant office buildings, break rooms, and 

other manned applications.

MCC, RIE, DCS, LER, power, and switchgear buildings