nVent PCFF1YZ - Cont. flow, flush, Y and Z
nVent

PCFF1YZ

UPC: 783510271459

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Installation Instructions

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Overview

The nVent PCFF1YZ is a critical component for ensuring the safety and integrity of electrical enclosures in hazardous environments. This continuous flow purge and pressurization system, specifically designed for Type Y and Z hazardous locations, utilizes a positive pressure method to prevent the ingress of explosive gases and dust. By maintaining a constant flow of protective air or inert gas, the system creates a barrier that safeguards sensitive electrical equipment within the enclosure. This model features a flush internal mount, offering a clean and integrated installation. It is equipped with a local visual alarm indicator and a dry contact output, enabling seamless integration with remote monitoring systems for immediate alerts. The nVent PCFF1YZ is typically recommended for enclosures with a volume of 17 cubic feet or less. While larger enclosures can utilize continuous flow models, extended purging times may be necessary to achieve the required protection levels. Key features and benefits include: * **Continuous Flow Protection:** Maintains positive internal pressure through a constant flow of protective air or inert gas. * **Hazardous Location Certifications:** Certified for Type Y and Type Z hazardous locations, meeting stringent international standards including IECEx, ATEX, and North American classifications (NFPA496, UL). * **Versatile Mounting:** Flush internal mount design for discreet and efficient installation. * **Integrated Alarms:** Local visual alarm and dry contact output for remote notification. * **Enclosure Compatibility:** Designed for use with Type 4, 4X, and 12 enclosures (IP54 recommended minimum). * **Operating Temperature Range:** Operates reliably within a temperature range of -20°C to 55°C (-4°F to 131°F). The nVent PCFF1YZ is part of nVent's comprehensive suite of protection solutions, built upon decades of expertise in enclosure integrity and hazardous area safety. Its robust design and adherence to rigorous certification standards make it a trusted choice for industries such as oil and gas, chemical processing, pharmaceuticals, and any application where explosive atmospheres pose a significant risk. Proper installation and maintenance, as per manufacturer guidelines, are essential to ensure optimal performance and compliance with safety regulations. The system comprises a control unit, a calibrated outlet orifice, and a relief valve, all engineered for reliability and longevity in demanding industrial settings. **Certifications:** * **Type Y:** Ex [py] Ex [p]; IECEx SIR.0019X [Gb, Db]; ATEX Category 2 GD; North America Cl I Div 1 Groups A, B, C, D; For protecting Cl I Div 2 equipment; UL E466718. * **Type Z:** Ex [pz] Ex [p]; IECEx SIR.0019X [Gc, Dc]; ATEX Category 3 GD; North America Cl I Div 2 Groups A, B, C, D; UL E466718. This product is manufactured in the USA.
  • All exterior components are 316 stainless steel or corrosion-resistant composite
  • Space-saving flush or exterior mounted models available
  • Local visual indicators provide system status
  • Leak compensation models are equipped with rapid purge valve and visual purge status indicator
  • All models utilize dry, clean inert gas supply of 60 PSI (4 bar) to 115 PSI (8 bar)
  • Ambient operating temperature -4°F (-20°C) to 131°F (55°C)
  • Type X models provide automatic purge cycle and 4PNO/20A/440VAC power contactor with 115 VAC or 230 VAC coil

Specifications

Application
Hazardous Environments
Certification Details
Type Y
Certification Type
Y and Z
Color
Unpainted
Consist Of
P P Cont Flow Flush 17 YZ IS
Finish
Brushed
Material
Stainless Steel 316L
Material
SS Type 316;Stainless Steel 316L
Modification Services
No
Mounting
Flush
Mounting Type
Flush Mount
Operation Type
Continuous Flow
Size
4-8 bar, <17 cu ft in
Thickness
51.40mm (2.024")
Thickness
3.18 mm
Thickness
11 ga
Type
Other Accessories
Weight
5.6 lb
Works With
NEMA / IEC
Package Dimensions (L x W x H)
13.2 IN x 9.5 IN x 6.7 IN
Package Dimensions (L x W x H)
33.528 cm x 24.13 cm x 17.018 cm
Package Weight (Imperial)
5.600 L
Package Weight (Metric)
2.540 kg
Leak comp., flush, Y and Z

PLCF1YZ

Leak comp., flush, Y and Z
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1-1/4 Inch 316 Stainless Steel Form 8 (LB) Conduit Body, Cover and Gasket with Polished Finish

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ARCA JIC 24 x 20 x 8 hinged opaque cover, stainless steel latch, padlockable

AR24208CHSSL

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Front hinge to box 20" front with quarter turn locks for flush mounted ReliaGear lightings panels. Quarter turn locks are required for XT5 and XT6 panelboard configurations, but can be used with other applications as well. Front hinged to box is similar to door-in-door for convenient access to gutters, but more economically priced. A contractor must remove four screws to access the outer door.

AF76FPT

Front hinge to box 20" front with quarter turn locks for flush mounted ReliaGear lightings panels. Quarter turn locks are required for XT5 and XT6 panelboard configurations, but can be used with other applications as well. Front hinged to box is similar to door-in-door for convenient access to gutters, but more economically priced. A contractor must remove four screws to access the outer door.
This is a box support for mounting electrical boxes. It is made of pre galvanized steel with a stamped construction and silver finish. The bracket mounts to either side of 2-1/2 inch and 3-1/2 inch wood or metal studs for 4 inch or 4-11/16 inch electrical boxes.

FBO23DS

This is a box support for mounting electrical boxes. It is made of pre galvanized steel with a stamped construction and silver finish. The bracket mounts to either side of 2-1/2 inch and 3-1/2 inch wood or metal studs for 4 inch or 4-11/16 inch electrical boxes.

How to Install the nVent Hoffman Purge/Pressurization Unit

This guide provides step-by-step instructions for installing the nVent Hoffman Purge/Pressurization Unit, ensuring proper setup and configuration for safe operation in hazardous areas.

Estimated time: 1h

Tools needed:

Screwdriver, Wrench, Multimeter

Supplies needed:

Mounting screws, NPT fittings, Nylon tubing, Grease for threads

  1. Mount the Control Unit

    Securely mount the Control Unit (CU) vertically on or near the Pressurized Enclosure (PE) using the provided mounting screws. Ensure that the unit is easily accessible for monitoring and maintenance.

  2. Connect the Purge Air Supply

    Connect the purge air supply to the CU using a ½” NPT fitting. Ensure that the connection is tight and free of leaks to maintain proper pressure during operation.

  3. Install the Relief Valve

    Install the Relief Valve (RLV) at the bottom or side of the PE to facilitate effective purging. Ensure it is mounted vertically and that the spark arrestor is clean and unobstructed.

  4. Connect the Pressure Monitor

    If the CU is not directly mounted on the PE, connect a 1/8” NPT nylon tube from the CU to the enclosure pressure monitor fitting to ensure accurate pressure readings.

  5. Set the Purge Time

    Adjust the purge timer on the CU according to the volume of the PE. Calculate the necessary purge time based on the purge flow rate and ensure the timer is set correctly before commissioning.

  6. Perform Initial Testing

    After installation, conduct a test by applying air pressure to the CU. Verify that the RLV opens at the specified pressure and that the purge flow is adequate. Check all indicators for proper operation.

  7. Finalize Configuration

    Once testing is complete, secure all covers and ensure that all connections are tight. Document the settings and ensure that the unit is ready for normal operation.

Frequently Asked Questions about nVent

What industries and applications are nVent products used for?

nVent products are engineered for critical infrastructure and industrial applications across multiple demanding sectors. Key markets include Construction, Data Centers, Defense, Healthcare, Mining, Oil & Gas Refineries, Power Plants, Rail/Transit, Renewable Energy, Security, Ship Building, Steel Mills, Telecom, and Utilities. Their solutions are designed to withstand extreme environmental conditions, with temperature ranges from -55°C to 105°C and specialized features like UV resistance, oil resistance, and flame resistance.

What environmental ratings do nVent products have?

nVent enclosures feature comprehensive environmental ratings, including UL 508A, CSA, and NEMA Type 1, 2, 3, 4, 4X, 12, and 13 certifications. They are rated IEC 60529 IP66, providing robust protection against dust, water, and corrosion in both indoor and outdoor environments. These products operate effectively in temperatures ranging from -40°F to 266°F, with enhanced UV inhibitors for outdoor weathering and oil-resistant gaskets for superior sealing.

What accessories are available for nVent products?

nVent offers a comprehensive range of accessories across multiple product lines, including EMC accessories like bonding cable clamps and strain reliefs, inline accessories such as lock inserts and mounting brackets, CONCEPT accessories including panel conversion kits and rack-mount angles, and seismic accessories for specialized mounting requirements. Key accessory categories include grounding kits, DIN rail mounting solutions, panel supports, handles, and various mounting hardware compatible with different enclosure types.

What certifications and standards do nVent products comply with?

nVent products meet critical international certifications including UL (United States), CSA (Canada), CE (European Community), and EAC (Russia). Our products are designed to comply with rigorous industrial standards such as NEMA enclosure ratings, IEC 60529 IP ratings, and international safety standards across multiple industrial markets including oil & gas, power, manufacturing, and infrastructure.

What is nVent's warranty policy?

nVent offers a standard 18-month warranty from invoicing date for most automation products, covering defects in workmanship and materials. The warranty requires proper transportation, handling, storage, and installation within specified environmental conditions. Warranty coverage includes repair or replacement at nVent's discretion, with certain conditions such as authorized service repairs and operation within designed capacity limits.

What technical support does nVent offer?

nVent offers comprehensive technical support through multiple global contact centers across North America, South America, Europe, Middle East, India, and Asia. Customers can reach technical experts by phone at regional numbers, with the North American headquarters in Minneapolis, MN providing primary support at +1.763.421.2240. Additionally, nVent provides online support resources through their website, including CAD drawing downloads and an 'Ask The Expert' feature to assist with product technical inquiries.