Refrigeration Pipe Work; Single-Zone Refrigerant Cycle Diagram; Single-Zone Piping Limitations - Lennox MCB Series Service Manual

5. Refrigeration Pipe Work

5.1.

Single-Zone Refrigerant Cycle Diagram

INDOOR
(EVAPORATOR)
CN9 (T2) Evaporator
temp. sensor
5.2.

Single-Zone Piping Limitations

INDOOR UNIT
Maximum
Elevation -
Outdooor
Unit BELOW
Indoor Unit
Outside Unit BELOW Indoor Unit
Do not allow for excess length of line sets to be left rolled up as part of the
required distance, or in general. This will also cause additional performance issues.
LIQUID SIDE
CN8 (T1) Room temp.
sensor
GAS SIDE
Maximum Line Set
Length
OUTDOOR UNIT
Minimum Line Set
Length - 10 ft. (3m)
IMPORTANT
OUTDOOR
CAPILIARY TUBE
T3 - Condenser Temp
Sensor
T4 - Ambient Temp
Sensor
COMPRESSOR
Maximum Line Set
Length
INDOOR UNIT
Outside Unit ABOVE Indoor Unit
19
T5 - Discharge Temp
Sensor
(CONDENSER)
Minimum Line Set
Length - 10 ft. (3m)
OUTDOOR UNIT
Maximum
Elevation -
Outdooor
Unit ABOVE
Indoor Unit