Product Description; Prop Fan Condensing Units; Base System 95°F (35°C) Ambient Models; 105°F (41°C) Ambient Models - Liebert Prop Fan Condensing Unit User Manual

1.0 P D
RODUCT
1.1

Prop Fan Condensing Units

Liebert ® propeller fan condensing units are available in a range of sizes and configurations to offer
flexibility in designing a precision environmental control system. The appropriate propeller fan
condensing unit paired with a corresponding Liebert fan coil evaporator model such as Liebert
DataMate ™ , Liebert Mini-Mate2
environmental control application requirements.
Split system condensing units are connected to the evaporator unit by two refrigerant lines (four in
8-ton systems) and a low-voltage control cable. The condensing unit requires a separate power source
and power disconnect switch.
1.1.1 Base System 95°F (35°C) Ambient Models
The heart of the refrigeration system is a quiet, high efficiency scroll compressor with internal
vibration isolation mountings, pressure safety controls and built-in overload protection. Standard
features include crankcase heater, high-pressure switch, condenser coil, sight glass, filter drier, hot
gas bypass system with liquid quenching valve, direct drive propeller fan and motor, and Liebert
Lee-Temp flood-back head pressure control. These models are designed to provide catalog capacity of
™
the appropriate evaporator section up to 95°F (35°C) outside ambient temperature.
1.1.2 105°F (41°C) Ambient Models
These models contain similar components to the base models except the coils and fans are sized to
provide catalog capacity of the appropriate evaporator section up to 105°F (41°C) outside ambient
temperature.
1.1.3 Liebert Quiet-Line
These models contain similar components to the base models except the coils and fans are sized to
provide catalog capacity of the appropriate evaporator section up to 95°F (35°C) outside ambient
temperature with a noise level of less than 58 dBA.
1.2

Optional Equipment

1.2.1

Coated Coil

This option provides a phenolic coating for the condenser coil (extended lead time is required for this
option; consult factory).
Pre-Charged Refrigeration Line Sets
For efficient condenser/evaporator connection, factory pre-charged line sets with quick connect
fittings are available in 15-ft. and 30-ft. (4.5m and 9m) lengths. Each set includes an insulated copper
suction line and copper liquid line, both charged with R-407C refrigerant and sealed. Line sets are
only available for 1 to 3.5 Ton Units.
1.2.2

Refrigerant Line Sweat Adapter Kit

This kit includes the compatible fittings required (two for the insulated suction line and two for the
liquid line) when using field-supplied interconnecting refrigerant lines instead of the pre-charged line
sets.
1.2.3

277V Step-Down Transformer

A 37.5A, 277V step-down transformer is available for 1-to 3-Ton 60Hz condensing units needing
277/1/60 input power. Apply this transformer to a 208/230/1/60 condensing unit. The transformer is
coated with epoxy and contained in an enclosed, non-ventilated electrical box with adaptable
mounting brackets.
ESCRIPTION
™ or Liebert Challenger 3000
™
Models
™ is an effective solution for your
1

Product Description