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Bry-Air MiniPAC MP-350 Desiccant Dehumidifier – Stainless Steel
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Bry-Air MiniPAC MP-350 Desiccant Dehumidifier – Stainless Steel
Bry-Air MiniPAC MP-350 Desiccant Dehumidifier – Stainless Steel
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Bry-Air MiniPAC MP-350 Desiccant Dehumidifier – Stainless Steel

Brand: Bry-AirSKU: MP-350
$18,275.00
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MP-350 Desiccant Dehumidifier — 3-Phase Low-Humidity Control for Industrial Environments

Made to order — estimated 5-week lead time.

The Bry-Air MiniPAC MP-350 is a 350 CFM desiccant dehumidifier designed for facilities where refrigerant systems cannot maintain target humidity levels. Delivering 11.7 lbs/hr moisture removal independent of ambient temperature, it supports pharmaceutical production, cold storage, and electronics manufacturing environments requiring stable low RH. This stainless steel configuration is specified for corrosion resistance and long-term operation in controlled or washdown areas.

Bry-Air MP-350 Continuous Low-Temperature Drying Capacity

The MP-350 provides stable moisture removal without the performance drop-offs or defrost interruptions associated with refrigerant systems.

  • Consistent moisture removal — maintains 11.7 lbs/hr extraction across low and high temperature conditions where LGR units lose capacity
  • 350 CFM process airflow — supports larger labs, production rooms, and cold storage staging areas without stepping into full industrial units
  • Three-phase power configuration — enables higher throughput using 208–240V or 460–480V electrical infrastructure
  • Stainless steel construction — resists corrosion in high-humidity intake and washdown environments
  • No defrost cycle — eliminates downtime caused by coil icing in sub-50°F operating conditions
  • Airflow safety monitoring — prevents operation under restricted airflow caused by filter loading or blower issues

MP-350 Applications and Environments

The MP-350 is used in pharmaceutical manufacturing for tablet coating, API processing, and packaging areas where humidity affects product stability and handling. Cold storage warehouses and distribution centers install it in staging areas and loading docks where refrigerant systems cannot operate due to low ambient temperatures. Electronics manufacturing facilities and defense maintenance depots rely on desiccant drying to prevent corrosion and moisture-related failures in circuit boards and assemblies. Laboratories and testing facilities use it to maintain controlled low-humidity environments for sensitive instrumentation. It is also deployed in archival storage, museums, and document preservation facilities where consistent humidity control is required year-round.

MP-350 Desiccant Wheel Operation and Exhaust Requirements

The MP-350 uses a rotating desiccant wheel to adsorb moisture from the process airstream, eliminating the need for a compressor or evaporator coil. Moisture is continuously removed through a heated reactivation airstream that must be ducted to the exterior of the building. This design allows operation from sub-freezing temperatures up to 140°F with no defrost cycles or capacity loss. The stainless steel housing supports installations requiring corrosion resistance or periodic cleaning protocols.

Specifications

Model MP-350 / MiniPAC
Brand Bry-Air
Type Desiccant (rotary wheel, no compressor)
Process Airflow 350 CFM
Process External Static 0.90 in. wc
Reactivation Airflow 117 CFM
Reactivation External Static -0.70 in. wc
Moisture Removal 11.7 lbs/hr
Voltage 208–240V / 3-phase / 60Hz or 460–480V / 3-phase / 60Hz
Weight 222 lbs
Construction Stainless Steel Housing
Rotor Water-washable with stainless steel flange
Operating Modes Auto / Manual
Mounting Options Floor, wall, or duct-inline
Safety Systems Differential pressure switch, safety thermostat, reactivation cooldown, electrical interlocks
Lead Time Made to order, approximately 5 weeks


Product Warranty Information

"Parts-Only Limited Warranty"

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  3. Place your order and sales tax will not be charged.

For volume pricing or purchase orders, call (978) 295-7538.

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Frequently Asked Questions

Why does the MP-350 require three-phase power when the MP-100 and MP-175 run on single-phase?
At 350 CFM process airflow, the MP-350's blower and reactivation heater draw more electrical load than single-phase circuits can efficiently deliver at commercial amperage. Three-phase power — available at 208–240V/3-phase or 460–480V/3-phase, 60Hz — balances the load across three legs and operates the unit at lower per-leg current draw, reducing heat buildup in the wiring and improving motor efficiency. Facilities without three-phase service will need to evaluate transformer or phase converter options before specifying the MP-350.
How does the MP-350's 11.7 lbs/hr moisture removal rate compare to LGR dehumidifiers at the same CFM?
LGR dehumidifiers at 350 CFM may remove similar amounts of moisture at warm temperatures (70–80°F, 60% RH), but their removal rate drops sharply as temperature falls. At 50°F the typical LGR removes roughly 40–50% of its rated capacity; below 40°F most cannot operate effectively. The MP-350 maintains its 11.7 lbs/hr rate across the full operating temperature range from sub-freezing through 140°F, making it the correct choice for cold environments and applications requiring a humidity floor below 40% RH.
What is the minimum relative humidity the MP-350 can achieve?
The MP-350 can reduce relative humidity well below the floor achievable with refrigerant equipment — below 10% RH is achievable under favorable inlet conditions. The actual minimum depends on inlet air temperature and humidity, process airflow, and reactivation heat input. For specific performance curves at your target temperature and humidity conditions, request engineering data from Bry-Air before finalizing sizing.
Does the reactivation exhaust from the MP-350 need to be ducted to the building exterior?
Yes. The MP-350's reactivation airstream carries the moisture extracted from the process air and exits as 117 CFM of warm, humid exhaust. This exhaust must be routed to the building exterior through a duct penetration. Dumping the reactivation exhaust back into the conditioned space returns the extracted moisture and negates the dehumidification effect. Account for the 117 CFM exhaust volume in the building's ventilation balance calculation.
Can the MP-350 be installed inline with an existing HVAC duct system?
Yes. The MP-350 supports duct-inline installation in addition to floor-standing and wall-mounted configurations. In inline service, the unit treats supply or return air from the AHU as its process air stream. Verify that the existing duct system can accommodate the MP-350's 0.90" wc process external static pressure — insufficient duct static capacity will reduce effective airflow through the desiccant rotor and degrade moisture removal performance.
What does the differential pressure switch do if the process filter becomes clogged?
If the process filter becomes clogged and airflow drops below the MP-350's minimum operating threshold, the differential pressure switch detects the reduced pressure differential and triggers a fault alarm or controlled shutdown. This prevents the reactivation heater from running without adequate airflow — a condition that can cause overtemperature and heater damage. In unattended installations, the alarm notifies facility personnel of a filter maintenance condition before equipment damage occurs.
How is the MP-350's desiccant rotor maintained in the field?
The MP-350's desiccant rotor is water-washable and can be removed and rinsed on-site with clean water to clear accumulated dust and particulate without chemical cleaning agents. The stainless steel flange resists corrosion during the wash process. Bry-Air recommends following the specific rotor wash procedure in the installation and maintenance manual to avoid disturbing the desiccant matrix coating during cleaning.

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Yes, a confirmation email will be sent to the provided email address once the order is placed.

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Orders are processed within 1-2 business days and then prepared for shipment.

5. How long does it take for my order to arrive?

Estimated arrival time (ETA) is 5-7 business days for all orders.

6. Do you offer warranty?

All our products come with a manufacturer warranty of at least 1 year, depending on the brand.

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