VAC & VACPB Series
Vertical Wall-Mounted A/C & Pressurization Units
The VAC Series provides robust, industrial-grade cooling and heating for extreme environments, offered in capacities from 1.5 to 6 tons. For hazardous locations requiring positive pressure, the VACPB model builds upon this platform by integrating an automatic pressurization system compliant with NFPA 496 Type Z, eliminating the need for separate filtration and blower modules.
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Industrial Cooling with Optional Pressurization
The Safe Air Technology VAC Series is engineered to withstand the harshest industrial conditions, offering a durable baked enamel or stainless steel cabinet, high-efficiency scroll compressors, and 5-speed EC evaporator motors. These units are Class I, Division 2 certified, making them the standard choice for petrochemical, offshore, and wastewater facilities.
For buildings requiring declassification via purge and pressurization, the VACPB Series integrates the pressurization blower directly into the HVAC unit. This system draws in outside air, preconditions it through the DX cooling coil for temperature and humidity control, and maintains positive building pressure. This all-in-one design simplifies installation by removing the need for third-party blower kits and ensures compliance with NFPA 496 Type Z standards automatically.
Versatile Capacity: Available in 5 chassis sizes ranging from 1.5 Ton to 6 Ton.
VACPB Pressurization: Integrated blower provides 1,300 or 2,600 CFM of positive pressure airflow (NFPA 496 Compliant).
Intelligent Control: PLC-based controls (Allen Bradley Micro 800) with HMI for easy monitoring of pressure and temperature.
Efficient Operation: High-efficiency scroll compressors and 5-speed EC Evaporator motors.
Rugged Build: Baked enamel finish (Standard) with copper tube/aluminum fin coils; 304/316 Stainless Steel optional.
Safety: High/Low-pressure safety switches and thermal cut-off circuits for electric heaters.
Product Overview
Refrigerant
Sleeve Sizes
Certification
Class 1 Div. 2, Groups B,C,D
Class 1 Div. 2, Groups B,C,D
Dehumidification
Optional Reheat
Optional Reheat
Controls
Programmable Thermostat
PLC w/ HMI & Pressure Monitoring
Voltage
230V 1ph / 230V 3ph / 460V 3ph
230V 1ph / 230V 3ph / 460V 3ph
Compliance
NEC / NFPA 70
NFPA 496 Type Z (Purge/Pressurization)
Heating Capacity
Optional Electric Heat
Optional Electric Heat
Cooling Range
1.5 – 6 Ton
1.5 – 6 Ton
Pressurization
N/A
Integrated (1,300 or 2,600 CFM)
Function
Features
WCSK Series
WHPSK Series
Features
VAC Series
VACPB Series
Airflow Config
Mount Type
Dimensions (Indoor)
Dimensions (Outdoor)
System Type
Economizer Activation
Outside temperatures below 54°F
Lead Time
Tailored to project requirements (Consult Sales)
Dimensions
Voltage
Hazardous Location
Refrigerant
Weight
Housing Material
Configurations
Product Series
VAC & VACPB Series
Features
Specification
Target Application
Cooling Range
1.5 – 6 Ton
Compressor Speed
Evaporator Airflow
Condenser Airflow
Reheat System
Modulating Hot Gas Reheat (HGRH)
Controls
PLC-Based Architecture (BMS-Ready)
Heating Capacity
Quick Specifications
Series Product, VAC Series
Series Product, VAC Series
The WCSK (Cool Only) and WHPSK (Heat Pump) Series provide versatile, compact climate control for hazardous locations. Designed for both land-based and offshore applications, these units feature a slide-out chassis design for easy installation through windows or walls, delivering superior performance in Class I, Division 2 environments.
WCSK & WHPSK Series
The MS Series offers a versatile split-system solution for hazardous environments where space is limited. Comprising a slim indoor air handler and a rugged outdoor condensing unit, this series utilizes inverter-driven technology to deliver precise cooling (and optional heating) ranging from 9,000 to 36,000 BTU/hr.
MS Series
The RT® Series units are engineered to provide superior performance in extreme and hazardous conditions where space is at a premium. With capacities ranging from 13,500 to 15,000 BTU/hr, these compact rooftop units are the ideal solution for crane cabins, guard shacks, and small operator buildings located in Class I, Division 2 environments.
RT Series
