Lennox 22F08 User manual

Page 1
INSTALLATION INSTRUCTIONS FOR COMBUSTION AIR INDUCER REPLACEMENT KIT
(22F08; LB-112090E) USED ON KG/SG/ZG/LGH024-090 GAS PACKAGED UNITS
508153-01
2/2021
©2021
COMBUSTION AIR INDUCER
REPLACEMENT KIT
PACKAGED UNITS KITS
AND ACCESSORIES
Shipping and Packing List
Package 1 of 1 contains:
1- Combustion air inducer assembly
1- Transformer
Bag assembly containing:
1-Gasket
7- #10 Sheet metal screws
2- 1/4" QC Piggy-back terminals
1- 1/4" QC Terminal
3- Wiring diagrams
Application
This kit is used to replace 460V, 2-speed combustion air
inducers with 230V inducers. A transformer is required for
proper operation.
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
Install and Wire T3 Transformer
1. Disconnect all power and shut off gas supply to unit.
2. Open the control and heat section access panels.
See figure 1, 2, or 3.
3. Install the supplied T3 transformer as shown in figure
4, 5, 6, or 7.
4. Connect wiring as shown in each figure. If no space
is available on K1 contactor, re-terminate the
transformer leads using the supplied piggy-back
terminals.
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.
FIGURE 1
COMPRESSOR
SECTION
MULLIONHEAT SECTION
KG/LGH UNITS
FIGURE 2
OUTDOOR
SECTION
HEAT SECTION
SG UNITS
CONTROL
BOX
FIGURE 3
HEAT SECTION
ZG UNITS
CONTROL
BOX

Page 2
INSTALL T3 TRANSFORMER - LGH
FIGURE 4
T3
K1
CONTACTOR K2
K13
RELAY
WHITE
LEAD TO
K1-L2
RED
LEAD TO
K1-L1
BLACK
LEAD
K13-7 LEAD
DISCONNECTED
FROM K1-L1
NOTE - IF NO SPACE IS AVAILABLE ON
K1 CONTACTOR, RE-TERMINATE THE
TRANSFORMER LEADS USING THE
SUPPLIED PIGGY-BACK TERMINALS

Page 3
INSTALL T3 TRANSFORMER - KG
FIGURE 5
WHITE
LEAD TO
K1-L2
RED
LEAD TO
K1-L1
BLACK
LEAD
A3-CMB-L1 LEAD FROM THE A3
IGNITION CONTROL WAS DISCON
NECTED FROM K1-L1 TERMINAL
ON THE K1 CONTACTOR
T3
A3
IGNITION
CONTROL
NOTE - IF NO SPACE IS AVAILABLE ON
K1 CONTACTOR, RE-TERMINATE THE
TRANSFORMER LEADS USING THE
SUPPLIED PIGGY-BACK TERMINALS K1
CONTACTOR

Page 4
INSTALL T3 TRANSFORMER - ZG
FIGURE 6
NOTE - IF NO SPACE IS AVAILABLE ON
K1 CONTACTOR, RE-TERMINATE THE
TRANSFORMER LEADS USING THE
SUPPLIED PIGGY-BACK TERMINALS
WHITE
LEAD TO
K1-L2
RED
LEAD TO
K1-L1
BLACK
LEAD
T3
A3
IGNITION
CONTROL
K2
K1
CONTACTOR
A3-CMB-L1 LEAD FROM THE A3
IGNITION CONTROL WAS DISCON
NECTED FROM K1-L1 TERMINAL
ON THE K1 CONTACTOR

Page 5
INSTALL T3 TRANSFORMER - SG
FIGURE 7
WHITE
LEAD TO
K1-L2
RED
LEAD TO
K1-L1
BLACK
LEAD
K13-7 LEAD
DISCONNECTED
FROM K1-L1
T3
K13
RELAY
NOTE - IF NO SPACE IS AVAILABLE ON
K1 CONTACTOR, RE-TERMINATE THE
TRANSFORMER LEADS USING THE
SUPPLIED PIGGY-BACK TERMINALS
K1
CONTACTOR