Carrier 020-093 Installation, Operation And Maintenance Instructions page 6

3 - POSSIBLE TYPES OF ASSEMBLIES
Depending on the indoor airfl ow direction
R1 assembly, Direction 0
"In-line" standard
S
R1 assembly, Direction 2
"In-line" standard
S
R1 assembly, Direction 0
"In-line" standard
S
R1 assembly, Direction 2
"In-line" standard
S
Indoor airfl ow direction
0
Lower supply and lower return
2 Lower supply and lateral return
6
R assemblies: "in-line" (models 052 to 062): R-410A only
R2 assembly, Direction 0
Economizer, 2 dampers: fresh air damper
interlocked with return damper
R
R2 assembly, Direction 2
Economizer, 2 dampers: fresh air damper
interlocked with return damper
R
R assemblies: "in-line" (models 070 to 073): R-410A only
R2 assembly, Direction 0
Economizer, 2 dampers: fresh air damper
interlocked with return damper
R
R2 assembly, Direction 2
Economizer, 2 dampers: fresh air damper
interlocked with return damper
R
F
R
S
F
R
S
F
S R
F
R
S
Legend
S Lower air supply R Lower air return
S' Lateral air supply R' Lateral air return
RP assembly, Direction 0
Lower return plug-fan
S
RW assembly, Direction 0
Lower return plug-fan + Rotary heat
exchanger (passive recovery)
S
RP assembly, Direction 0
Lower return plug-fan
S
RW assembly, Direction 0
Lower return plug-fan + Rotary heat
exchanger (passive recovery)
S
F Fresh air intake
E Exhaust air outlet
F
E
R
F
E
R
F
E
R
F
E
R