Lennox LCT Series Unit Information

S e r v i c e L i t e r a t u r e
The LCT302H / 360H (25 and 30 ton) units are config-
ured to order units (CTO) with a wide selection of facto-
ry-installed options. Optional electric heat is factory-or
field-installed in LCT units. Electric heat operates in single
or multiple stages depending on the kW input size. 30kW
through 120kW heat sections are available..
Units may contain a supply air blower equipped with a
variable frequency drive A96 (VFD) which varies supply
air CFM.
If the unit must be lifted for service, rig unit by attaching
four cables to the holes located in the unit base rail (two
holes at each corner). Refer to the installation instructions
for the proper rigging technique.
WARNING
Do not use means to accelerate the defrosting
process or to clean, other than those recommended
by the manufacturer.
The appliance shall be stored in a room without
continuously operating
example: open flames, an operating gas appliance,
or an operating electric heater).
Do not pierce or burn.
Be aware that refrigerants may not contain an odor.
WARNING
If this appliance is conditioning a space with an area
smaller than TA min or stored in a space with an area
smaller than A min as defined by this instruction,
then that space must be without continuously
operating open flames (e.g. an operating gas
appliance) or other potential ignition sources (e.g.
an operating electric heater or similar hot surface).
A flame-producing device may be installed in the
same space if the device is provided with an effective
flame arrest system.
WARNING
Auxiliary devices which may be potential ignition
sources shall not be installed in the duct work.
Examples of potential ignition sources are hot
surfaces with a temperature exceeding 700°C and
electric switching components.
UNIT INFORMATION UNIT INFORMATION
LCT302 - 360 With R-454B
ignition sources (for
100142
False ceilings or drop ceiling may be used as a return air
plenum only if the unit being installed has a Refrigerant
Detection System installed.
All maintenance staff and others working in the local area
shall be instructed on the nature of work being carried out
with work in confined spaces being avoided.
Ensure that the area is in the open or that it is adequately
ventilated before breaking into the system or conducting
any hot work. A degree of ventilation shall continue during
the period that the work is carried out. The ventilation
should safely disperse any released refrigerant and pref-
erably expel it externally into the atmosphere.
Options / Accessories . . . . . . . . . . . . . . . . . . .Page 3
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . .Page 7
Blower Data . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 9
Electric Heat / Electrical Data . . . . . . . . . . . . . Page 14
Unit Parts Arrangement . . . . . . . . . . . . . . . . . . Page 19
I-Unit Components . . . . . . . . . . . . . . . . . . . . . . Page 21
RDS Sensors . . . . . . . . . . . . . . . . . . . . . . Page 28
II-Placement and Installation . . . . . . . . . . . . . . .Page 35
III-Start Up - Charging. . . . . . . . . . . . . . . . . . . . Page 35
IV-System Service Checks . . . . . . . . . . . . . . . . Page 42
V-Maintenance . . . . . . . . . . . . . . . .. . . . . . . . . .Page 42
VI-Accessories . . . . . . . . . . . . . . . . . . . . . . . . .Page 44
VII-Decommissioning. . . . . . . . . . . . . . . . . . . . .Page 52
VIII-Wiring and Operation Sequence . . . . . . . . Page 53
Page 1
LCT SERIES
25 & 30 ton

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