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PWMEX

Petra Explosion Proof Wall Mounted Package Unit with Hermetic Scroll Compressors

Petra Explosion Proof Wall Mounted Package Unit with Hermetic Scroll Compressors

The PWM-Petra Wall Mounted Package air conditioner is a self-contained energy efficient system which is designed to offer maximum indoor comfort at minimal cost without using valuable indoor floor space or outside ground space

This unit is the ideal product for versatile applications such as new construction, modular offices, school modernization, telecommunication structures, portable structures, and correctional facilities. Factory or field installed accessories are available to meet specific job requirements. Systems are suitable for oil and gas industrial applications and meet hazard location design requirements in accordance to appropriate UL and NEC standards

  • Quite operation with optimal performance
  • Compact design
  • Easy installation and maintenance
  • High design flexibility
  • Easily accessible electrical components for routine inspection and maintenance
  • Motors are easily accessible for fast & easy maintenance
  • Twin blowers to move air more quietly
  • Weatherproof, polyester epoxy powder electrostatic paint oven-baked finish for sheet metal and multi epoxy coating for base frame
  • Explosion proof electrical enclosure certified for Class I, Division II, Groups B,C & D, Class II Groups E, F & G, Class III. Type 4 with sealing fittings provided on all openings
  • Liquid tight flexible metallic conduits with explosion proof sealing fittings used to eliminate the propagation of flame path certified for Class I, Division II, Groups B, C & D
  • Explosion proof high pressure and low pressure switches suitable for Class I , Division II, Group A,B,C,& D; 5 A at 250VAC; Temperature range -50 to 95°C
  • Explosion proof fan motors certified for class I division II, Group C and D, T3C with conduit seal located within 18 inches of termination box
  • Anti-Spark belt driven Centrifugal fan with anti-static V-belt and brass input cone with adequate clearance for all rotating parts to prevent any contact
  • Anti-Spark Axial fan with aluminum fan blades and adequate clearance for all rotating parts to prevent any contact
  • Explosion proof solenoid valve coil certified for Class I, Division II, Group C & D, T3, 230V 50/60hz, 0.11A
  • Multihub junction box with 1/2” NPT connections. Type 4X; containing terminal blocks only; suitable for Class I, Division II, Group C and D; Nonarcing
  • Built-in full length mounting brackets
  • Engineering data sheets available with detailed system specification
  • External pressure relief valve
  • Pressure gauges (high and low)
  • Suction and discharge valve
  • Moisture sight glass indicator
  • Finned tube electric heater
  • Emergency operation in the event of a power failure
  • Phase failure relay to monitor the main power entry (for 3 phase units only)
  • External overload relay
  • Power circuit breaker for each motor
  •  Service disconnect switch (non-fused)
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