Possible Types Of Assemblies - Carrier 50FF 020 Installation, Operation And Maintenance Instructions

3 - POSSIBLE TYPES OF ASSEMBLIES

Depending on the indoor airfl ow direction
B1 assembly
Standard
S''
S'
S
B3 assembly
Economizer, 3 dampers:
fresh air damper and exhaust air damper
S'
S
BA assembly
Plug-fan in return section +
Cooling recovery circuit (active recovery)
S'
S
BW assembly
Plug-fan in return section + Heat recovery
wheel module (passive recovery)
S'
S R
Indoor airfl ow direction
0
Lower supply and lower return
1 Lateral supply and lower return
2 Lower supply and lateral return
B assemblies: "Standard" (all models): R-410A and R-454B
B2 assembly
Economizer, 2 dampers: fresh air damper
interlocked with return damper
R''
R' S'
R
BX assembly
Axial return fan
F
E
S'
R
BT assembly
Return top box with plug-fan or centrifugal fan
R'
F
E
S'
R
BL assembly (upon request)
Return top box with plug-fan or centrifugal fan +
Heat recovery wheel module (passive recovery)
R'
F
E
S'
3
Lateral supply and lateral return
4 Upper supply and lower return
5 Lateral supply and upper return
S'' R''
F
R'
S R
F
E
S R
E
F
S
E
F
S
BF assembly
100% fresh air
S'
S
BP assembly
Plug-fan in return section
S'
S
BB assembly
Return top box with plug-fan or centrifugal fan
+ Cooling recovery circuit (active recovery)
R'
S'
S
Legend
S Lower air supply R Lower air return
S' Lateral air supply R' Lateral air return
S'' Upper air supply R'' Upper air return
F Fresh air intake E Exhaust air outlet
Note: only one of the three possible options
(lower, lateral or upper) can be selected for both,
supply and return.
The airfl ow direction selected for supply and
return (lower or lateral) is easily interchangeable
on site.
6
Upper supply and lateral return
7 Lower supply and upper return
8 Upper supply and upper return
F
F
E
R
E
F
5