Lennox K1ECON20C-3 Installation Instructions Manual

©2022
INSTALLATION INSTRUCTIONS FOR ECONOMIZER AND OUTDOOR AIR HOOD
Shipping and Packing List
Package 1 of 1 contains:
Damper Assembly
1- Economizer damper assembly
1 Economizer end plate (secured to packaging)
1- Bag assembly containing:
1-Economizer control (A6) and harness
1-Mixed air sensor (R1)
1-Mounting bracket for R1
1-Single sensible sensor (S175 in 13U48 kits; RT26
in 23G24 kits)
1-Mounting bracket for S175 (in 13U48 kit only)
1-Sensor RT26 (in 23G24 kits only)
1-Harness P104 to A7 (in 13U48 kit only)
1-Resistor assembly (in 13U48 kit only)
1-Harness J104 to A6 (in 23G24 kits only)
1-Harness J104 to RT26 (in 23G24 kits only)
1-Harness R1 (in 23G24 kits only)
1-Bag assembly containing:
#10-16 X 5/8 Self-drilling screws
#6-32 X 7/8 Thread forming screws
#6-32 X 1 Machine screws
#6-32 X 1/2 Thread forming screws
#10-16 X 5/8 Sheet metal screws
2 - D1 economizer section wiring diagrams
1 - Insertion wire tie
Hood Assembly
1- Hood top*
1- Hood top seal
2- Hood sides*
2- Top filter brackets*
1- Bottom filter bracket*
2- Side filter brackets*
3- Filters*
1- Hood top stiffener
1- Top seal stiffener
ECONOMIZERS
508266-01
8/2022
Supersedes 2/2022
USED WITH KG/KC/KH 156H-300S UNITS
Page 1
*When economizer is factory-installed, hood sides, side
filter brackets and filters are packaged separately and
shipped in the blower compartment. The top and bottom
filter brackets are secured to the hood top and the hood
top is shipped in place on the unit.
NOTE - Gravity exhaust dampers are required with
economizers and should be installed before the
economizer. Refer to installation instructions provided
with gravity exhaust dampers. If return air sensor(s) are
specified, install sensor(s) before gravity exhaust.
WARNING
Improper installation, adjustment, alteration, ser­
vice or maintenance can cause property damage,
personal injury or loss of life. Installation and ser­
vice must be performed by a licensed professional
HVAC installer or equivalent, service agency, or the
gas supplier
CAUTION
As with any mechanical equipment, contact with
sharp sheet metal edges can result in personal in­
jury. Take care while handling this equipment and
wear gloves and protective clothing.
Application
The economizer is used with KG/KC/KH 156H-300S
units in downflow air
Economizer dampers will modulate to maintain 55_F
(13_C) supply air when outdoor air is suitable. The
mixed air temperature sensor (R1) is provided in this kit
and measures the supply air sensible temperature.
NOTE - On units equipped with an inverter (VFD) drive
indoor blower motor, refer to the unit installation
instructions for additional setup requirements.
Two types of economizers are available. See table 1.
TABLE 1
Print No. .
Cat. No
604592-10 13U48
604592-15 23G24
ECONOMIZERS
discharge applications.
Kit Description
Standard Economizer
High Performance Economizer