S e r v i c e L i t e r a t u r e
The LHT302 is a configured to order unit (CTO) with a
wide selection of factory installed options.
Optional electric heat is factory- or field-installed. Electric
heat operates in single or multiple stages depending on
the kW input size. 30kW to 90 kW heat sections are avail-
able.
The unit has a 25 ton cooling capacity and utilizes two
compressors and six condenser fans.
Multi-Stage Air Volume MSAV
The VFD-driven blower will operate at lower speeds when
demand is low and increase to higher speeds when de-
mand is high.
All LHT units are designed to accept any of several differ-
ent energy management thermostat control systems with
minimum field wiring. Factory- or field-provided control op-
tions connect to the unit through Smartwire connectors.
When "plugged in" the controls become an integral part of
the unit wiring.
False ceilings or drop ceiling may be used as a return air
plenum only if the unit being installed has a Refrigerant
Detection System
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.
WARNING
Improper
installation,
service or maintenance can cause property damage,
personal injury or loss of life. Installation and service
must be performed by a licensed professional HVAC
installer or equivalent, service agency, or the gas
supplier
UNIT INFORMATION
UNIT INFORMATION
LHT302 with R454B
blower option is available.
®
adjustment,
alteration,
100183
02/2025
To prevent serious injury or death:
1- Lock-out/tag-out before performing maintenance.
2- If system power is required (e.g., smoke detector
maintenance), disable power to blower, remove
fan belt where applicable, and ensure all
controllers and thermostats are set to the "OFF"
position before performing maintenance.
3- Always keep hands, hair, clothing, jewelry, tools,
etc., away from moving parts.
OOptions / Accessories
Page 1
LHT SERIES
WARNING
Table of Contents
25 ton
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