Lennox KGC Series Unit Information

S e r v i c e L i t e r a t u r e
The KGC 7.5, 8.5, 10 and 12.5 ton (092, 102, 120, 150)
packaged gas units are available in standard cooling
efficiency. Units are available in 130,000, 180,000 or
240,000Btuh (38.1, 52.7 or 70.3 kW) heating inputs. Gas
heat sections are designed with aluminized steel tube
heat exchangers.
All KGC 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 with jack plugs. When "plugged
in" the controls become an integral part of the unit wiring.
Units come standard with a lightweight, all-aluminum con-
denser coil; optional, fin/tube condenser coils are avail-
able.
Information contained in this manual is intended for use
by qualified service technicians only. All specifications are
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.
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
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.
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
KGC092 through 150
adjustment, alteration,
100097
As with any mechanical equipment, contact with
sharp sheet metal edges can result in personal
injury. Take care while handling this equipment and
wear gloves and protective clothing.
Electric shock hazard. Can cause injury
or death. Before attempting to perform
any service or maintenance, turn the
electrical power to unit OFF at disconnect
switch(es). Unit may have multiple power
supplies.
Options . . . . . . . . . . . . . . . . . . . . . .Page 2
Specifications . . . . . . . . . . . . . . . . . .Page 5
Spec. Gas Heat / High Altitude . . . Page 9
Blower Data . . . . . . . . . . . . . . . . . . Page 7
Electrical Data. . . . . . . . . . . . . . . . . Page 11
I Unit Components . . . . . . . . . . . . . Page 14
II Placement and Installation . . . . . Page 27
III Start Up Operation . . . . . . . . . . . Page 27
IV Charging . . . . . . . . . . . . . . . . . . . Page 30
V System Service Checks . . . . . . . Page 36
VI Maintenance . . . . . . . . . . . . . . . . Page 38
VII Accessories . . . . . . . . . . . . . . . . Page 40
VIII Diagrams . . . . . . . . . . . . . . . . . . Page 48
Page 1
KGC SERIES
7.5 to 12.5 ton
CAUTION
WARNING

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