City Multi VRF Systems

City Multi – BC Controller

BC Controller

Branch Circuit Controller (BC Controller) is the technological heart of the CITY MULTI R2–Series. It works in unison with the outdoor unit to provide simultaneous cooling and heating, something no other two–pipe system can do.

Flexibility in refrigerant piping design

The maximum piping length from the central BC controller to indoor units 90 m, providing flexibility in piping design. Sub-BC controllers should be used when piping length is 60 m or more.

Main BC connection to 40 kW/101 kW/124 kW outdoor unit capacity

The main BC controller is available in three outdoor unit capacity types: J Type (~40kW), JA Type (~101 kW) and KA Type (~124 kW).

Main BC Controller

For larger systems that require the use of Sub BC Controllers.

Reduced height: 246 mm high

Reduced height: 246 mm high

Main and sub-BC controllers are 246 mm high allowing installation in ceilings with limited space. Servicing space is required.

Single BC Controller

For systems with up to 40 kW nominal cooling capacity that require only one BC Controller (J Type).

Sub-BC controllers

The Main BC can connect to up to 11 sub-BC controllers, allowing for more flexibility in system design. The line-branching method enables the creation of system designs that use less refrigerant.

World’s first 2-pipe heat recovery system

The BC Controller houses a liquid/gas separator, allowing the outdoor unit to deliver a mixture (2-phase) of hot gas for heating and liquid for cooling, all through the same pipe. When this mixture arrives at the BC Controller, it is separated and the correct phase delivered to each indoor unit depending on the individual requirement of either heating or cooling.

Other Features

  • World’s first and only 2-pipe heat recovery system
  • Connect Main BC to up to 11 sub-BC controllers
  • Flexibility in refrigerant piping design
  • Main BC connection to 40 kW/101 kW/124 kW outdoor unit capacity
  • Reduced height: 246 mm high Reduced plant room sizes

DOWNLOADS

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City Multi – Part 1 of 2

Explore the CITY MULTI commercial air conditioning range.

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Brochure

City Multi – Part 2 of 2

Explore the CITY MULTI commercial air conditioning range.

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