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Lennox O23 User Manual

Lennox O23
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Page 30
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TJERNLUND HORIZONTAL VENTING SYSTEM (SIDESHOT) OPERATION SEQUENCE:
1. When 1K2 closes, 120VAC is routed through the relay/timer, electronic ignitor (A73), and the limit switch.
2. The relay/timer energizes the venter motor.
3. After the venter motor establishes a draft, the N.O. fan proving switch closes completing the circuit to the burner motor.
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FIELD CONTROL HORIZONTAL VENTING SYSTEM OPERATION SEQUENCE:
1. When 1K2 closes, 120VAC is routed through the relay.
2. The relay energizes the venter motor.
3. After the venter motor establishes a draft, the N.O. fan proving switch closes, completing the circuit to the burner motor and electronic ignitor (A73).

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Lennox O23 Specifications

General IconGeneral
BrandLennox
ModelO23
CategoryFurnace
LanguageEnglish

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