Mar 25, 2025 · What is a branch selector box? Branch selector boxes (BSB) are used only with simultaneous heating and cooling heat recovery systems. Three pipes (suction gas, liquid, high/low pressure gas) are run from the condensing unit to the BSB. Two pipes are then run from the BSB to the indoor unit (s).

Flex Branch Selector boxes offer the flexibility to expand design with the ability to connect up to 12 1 ports and 230MBh 1 in series while maintaining the same long piping flexibility as previous generation.

All indoor units connectable to one BS box; Up to 16kW capacity available per port; Connect up to 250 class unit (28kW) by combining 2 ports; Unique range of single and multi BS boxes for flexible and fast design; Major reduction in installation time thanks to wide range, compact size and light weight multi BS boxes

Unique range of multi BS boxes allowing efficient 3--pipe heat recovery; No limitation on room size, thanks to Shîrudo Technology; Faster installation thanks to Refrigerant Flow Through reducing the number of brazing points and joint kits; Connectable to VRV 5 heat recovery units; Easy servicing in false ceilings thanks to sliding down PCB

Aug 24, 2017 · Mitsubishi’s VRF (2-pipe system) Multiport Branch Selector Box requires a condensate drain, while Daikin (3-pipe system) and others don’t require a drain. This is because of the difference of how the refrigerant is managed in the box.

size and light weight multi BS boxes • Up to 70% smaller and 66% lighter than previous series • Faster installation thanks to a reduced number of brazing points and wiring • All indoor units connectable to one BS box • Less inspection ports needed compared to installing single BS boxes • Up to 16kW capacity available per port

When using the COOL/HEAT selector (optional accessory), connect it to terminals A, B and C on X2M. As for wiring to the IN/D unit (F1) - (F2) and OUT/D unit (F1)-(F2) on X1M (A1P), refer to the installation manual. Use copper conductors only. Dip switch (DS1-2) initial settings are as follows.

Feb 8, 2019 · Branch selector boxes, or BS boxes for short, are only used in heat recovery applications. BS boxes will have the three pipes coming from the outdoor units piped directly to them. They are made up of solenoids and EEVS.

Daikin, the world's leading manufacturer of indoor HVAC systems, offers innovative, energy-efficient heating and air conditioning products for your home. Perfecting The Air We Share.

Unique range of single and multi BS boxes for flexible and fast design; Faster installation thanks to open port connection; Allows multi tenant applications