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FULLY DRESSED CONDENSING UNITS

A comprehensive range of fully dressed condensing units with medium and low temperature products suitable for cold room, retail display cabinet applications as well as air-conditioning condensing units suitable for air handling units and R22 refrigerant replacement units.


MRC (+)


condensing unit
  • Approved for use with new low GWP refrigerants R407A & R407F
  • Large range of single phase models
  • ECA listed MRC+ models

The Marstair range of medium temperature refrigeration condensing units are an effective cooling solution for food display cabinets and many other refrigeration applications designed specifically for outdoor use.


This quiet, efficient and slim profile unit will operate free standing or wall mounted. All units are supplied with a nitrogen charge so the installer can select the appropriate refrigerant for the application.

MRC Specification

  • Suction and liquid valves
  • Emerson or Saginomiya (Danfoss) Fan speed controllers
  • Emerson or Saginomiya (Danfoss) HP protection switches with auto reset & alarm
  • Emerson or Saginomiya (Danfoss) LP protection switches with auto reset
  • Low ambient start
  • 3 minutes start delay timer
  • Random start
  • Contactor (overload on 3Ph units)
  • Crankcase heater (reciprocating only)
  • Liquid receiver
  • European manufactured Heat Exchangers
  • Emerson UK Compressors MRC 45-180
  • Tecumseh Compressors MRC 15-40
  • European manufactured fans
  • UK manufactured plate work
  • UK manufactured timer protection PCBA
  • Capacitor start relay (15-40 1Ph only)

ADDITIONAL MRC+ FEATURES

  • Sight glass
  • Refrigeration drier
  • UK Solenoid (Kraus & Naimer) Detachable Isolator
  • Compressor jacket
  • Noise attenuation insulation




MRC (+) LT

The Marstair range of low temperature refrigeration condensing units for freezer temperature applications are available with the benefits of the MRC+ range.

MRC+LT Specification

  • Suction and liquid valves
  • Emerson or Saginomiya (Danfoss) Fan speed controllers
  • Emerson or Saginomiya (Danfoss) HP protection switches with auto reset & alarm
  • Emerson or Saginomiya (Danfoss) LP protection switches with auto reset
  • Low ambient start
  • 3 minutes start delay timer
  • Random start
  • Contactor (overload on 3Ph units)
  • Crankcase heater (reciprocating only)
  • Liquid receiver
  • European manufactured Heat Exchangers
  • European manufactured fans
  • UK manufactured plate work
  • UK manufactured timer protection PCBA
  • Capacitor start relay (40-60 1Ph only)
  • Sight glass
  • Refrigeration drier




condensing unit
  • UK Solenoid (Kraus & Naimer) Detachable Isolator
  • Compressor jacket
  • Noise attenuation insulation
  • MRC+ LT 40-60 Tecumseh Compressors with capacitor start relay
  • MRC + LT 80-100 Emerson Scroll ZF Compressors

MCU (+)

The MCU+ cool only outdoor condensing units are designed to be easily applied to bespoke applications including air handling units and ideal for R22 replacements.

Suitable for wall mounting or free standing, these stylish and slim profile outdoor units are easy to install and include the following features:-

  • Suction and liquid service valves
  • Fan speed head pressure control
  • Expansion device (orifice)
  • Low ambient start timer
  • 3 minute delay timer / random start timer
  • Crankcase Heater (reciprocating only)
  • Contactor
  • LP switch (auto)
  • HP switch (auto)
  • Factory charged with R407C refrigerant
  • Up to 80m pipe runs (equivalent length including 20m lift available) Models 15-20 up to 50m)
  • MCU+ 15-40 (Reciprocation compressors)
  • MCU+ 50-200 (Scroll compressors)

MHPUE

The MHPUE heat pump outdoor condensing units are designed to be easily applied to bespoke applications including air handling units. The units are supplied with their own reverse cycle defrost strategy and 230V compressor run and reversing valve inputs

condensing unit


Suitable for wall mounting or free standing, these stylish and slim profile outdoor units are easy to install and include the following features:-

  • Suction and liquid service valves
  • Fan speed head pressure control
  • Expansion device (orifice)
  • Low ambient start timer
  • 3 minute delay timer / random start timer
  • Crankcase Heater (reciprocating only)
  • Contactor
  • LP switch (auto)
  • HP switch (auto)
  • Factory charged with R407C refrigerant
  • Up to 80m pipe runs (equivalent length including 20m lift available) Models 15-20 up to 50m)
  • MHPUE 15-40 (Reciprocation compressors)
  • MHPUE 50-180 (Scroll compressors)






CKC

The CKC outdoor units are designed to complement the Marstair range of CX cellar coolers and CD3 close control systems using R407C. These units are similar to the MCU+ range of products but are supplied without an expansion device or refrigerant so are suitable for use with various refrigerants.

Suitable for wall mounting or free standing, these stylish and slim profile outdoor units are easy to install and include the following features:-

  • Suction and liquid service valves
  • Fan speed head pressure control
  • Low ambient start timer
  • 3 minute delay timer / random start timer
  • Crankcase Heater (reciprocating only)
  • Contactor
  • LP switch (auto)
  • HP switch (auto)
  • Factory charged with Nitrogen
  • Up to 40m pipe runs Models 15-20 up to 20m)
  • CKC+ 15-40 (Reciprocation compressors)
  • CKC+ 50-200 (Scroll compressors)

MCU+HA condensing units are designed for use with R134A refrigerant for external ambient temperature of up to 55°C.

These high quality units are supplied with a low pressure bypass timer, suitable for starting in low ambient temperatures and a fan speed control making it the perfect choice for environments which experience a broad range of ambient temperatures.

  • Easy access for installation and service
  • Suction and liquid service valves
  • Fan speed head pressure control
  • Low ambient start timer
  • 3 minute delay timer / random start timer
  • Contactor
  • LP switch (auto)
  • HP switch (auto)
  • Nitrogen holding charge
  • Up to 40m liquid line pipe runs

OPTIONS

  • Various corrosion protection options
  • A wide range of electrical options
  • Hot gas bypass for extreme low ambient temperature
  • Coil guards/Sand trap louvers
  • Crankcase heaters

Greenheat

The GreenHeat refrigeration condensing unit system captures the waste heat from your refrigeration cabinets that would normally be lost to the atmosphere and uses it as background heating to warm the store reducing both your heating bills and your carbon footprint.

The heat is recovered directly into the store through our extremely successful and proven CC600MGH which combines rapid installation and ease of maintenance.

condensing unit heat recovery
  • Low sound levels
  • Long air throws
  • 3 or 4 way air discharge
  • Removable, lightweight, one-piece chassis
  • Integral, easy to clean, drain tray
  • Easy accessed long life washable filters
  • Modern, slim, square fascia with rounded corners
  • All services accessed from one corner
  • Access to coil from all sides for easy cleaning
  • Fan guard for safety
  • Fresh air inlet provision and branch duct provision
  • Fan speed range selectable by the installer to suit the application






MARINE & BESPOKE

Marine/bespoke evaporators, condensers and split air conditioning systems

Suitable for a multitude of applications such as coastal, extreme high and low ambient temperature, harsh dusty environments and small & large vessels.

  • A wide range of internal unit options
  • A wide range of optional extras
  • A wide range of case and heat exchanger material options
  • 3 phase no neutral electrical option
  • High IP rating fans and electrical enclosures
  • BMS Alarm
  • Optional fitted isolator
  • Wide fin pitch heat exchanger
  • Coil Guard
  • Hot gas bypass capacity regulation valve
  • Compressor Crankcase Heater
  • External ambient temperature up to 55°C
  • High wind support brackets



condensing unit, marine, costal, extreme temperature, harsh environments
condensing unit, ATEX

ATEX (Ex II 2 G)

3 WAY SPLIT FOR ATEX II 2 G APPLICATIONS

The MCUA outdoor condensers are fitted with Atex rated fans and motors. They have copper/copper coils and stainless steel cases as the norm but can be supplied with standard aluminium finned copper tubed coils if preferred.

The MMC compressor cabinets work in conjunction with the MCUA unit, they contain the compressor and all electrics. This cabinet is designed to be located within the safe area.

When using R407C refrigerant these units are suitable for applications with ambient temperatures up to 42°C.

For high ambient applications, up to 55°C, the units are supplied with R134A refrigerant.