Johnson Controls LSWU035 Engineering Guide

FORM 145.05-EG2 (618)
JOHNSON CONTROLS
9
Condenser Water Regulating Valves
• Units without waterside economizer will permit compressor operation up to 55.0°F
and above. For condenser water temperatures below this threshold, optional con-
denser water regulating valve(s) are available. Optional condenser water valve con-
trols the water ow though unit condensers to maintain minimum discharge pressure
for all compressors with ow through unit enabled only in the cooling mode.
Optional Condenser and Bypass water valves maintain minimum discharge pressure
for all compressors with flow through unit always enabled.
Heating
• Hot water coil with factory installed and tested water piping and valve for modulated
control. Controlled by the unit controller.
• Electric heat, factory installed, wired, and tested.
• All of the heating options are in reheat position. However, the heating will only be
used when cooling is off.
• Only one heating option is available in any unit.
Controls
• Factory installed and wired non-fused disconnect switch for the unit power. Discon-
nect switch is accessible without opening unit doors.
• Static pressure transducer is installed and wired on all variable air volume (VAV)
units to control VFD operation.
• Additional static pressure transducer installed and wired with comparative logic built
in.
• Duct static pressure limit switch mounted and wired in unit to disable unit operation
in case of high duct static.
• BACnet (MS/TP) interface for communication with BAS.
• Water Flow Switch will lock out all compressors in the unit if minimum water ow
is not present.
High Efficiency Air Filtration
• Optional High Efciency MERV 13 4-inch thick lters are available with 4-inch
thick MERV 8 pre-lter.
High Efficiency Evaporator Coils
• High efciency evaporator coil for lower air ow, low leaving air temperature ap-
plications. Provides higher EER and higher capacity.
Modular Construction
• Unit shipped in multiple sections. All refrigerant piping, condenser water piping, and
condensate drain piping is factory assembled and does not require additional eld
work. Various sections are as follows:
• Refrigerant and heating section consisting of evaporator coil, water economy
coil, condensers, compressors, condenser water piping, and heating options.

Johnson Controls LSWU035 Specifications

General

Brand	Johnson Controls
Model	LSWU035
Category	Chiller
Language	English