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UNIT INFORMATIONUNIT INFORMATION
Service Literature
WARNING
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.
Table of Contents
Options / Accessories . . . . . . . . . . . . . . . . . . . . . Page 2
Blower Data .. . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 7
Electrical / Electric Heat Data.. . . . . . . . . . . . . . . Page 10
Unit Parts Arrangement . . . . . . . . . . . . . . . . . . . Page 14
I-Unit Components . . . . . . . . . . . . . . . . . . . . . . . Page 14
II-Placement and Installation . . . . . . . . . . . . . . . Page 29
III-Charging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page 29
IV Start Up - Operation . . . . . . . . . . . . . . . . . . . . Page 31
V-System Service Checks . . . . . . . . . . . . . . . . . Page 31
VI-Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . Page 31
VII-Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . Page 32
IX-Wiring and Operation Sequence . . . . . . . . . . Page 39
(CTO) with a wide selection of factory installed options.
heat operates in single or multiple stages depending on
-
heat sections are available for the LHT240.
Multi-Stage Air Volume MSAV
®
blower option is available.
The VFD-driven blower will operate at lower speeds when
demand is low and increase to higher speeds when de-
mand is high.
-
ent energy management thermostat control systems with
-
tions connect to the unit through Smartwire connectors.
When “plugged in” the controls become an integral part of
the unit wiring.
The CORE Control System is designed to accelerate
equipment install and service. Standard with all Enlight
protect your investments.
The CORE Unit Controller is a microprocessor-based
Information contained in this manual is intended for use
subject to change. Procedures outlined in this manual are
presented as a recommendation only and do not super-
sede or replace local or state codes.
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
Improper installation, adjustment, alteration,
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
LHT SERIES
13 to 20 ton
LHT156 through 240
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