Lennox iComfort SL280UH070V36A Manual page 51

VII- Wiring and Sequence of Operation
Integrated Control Self Check
When there is a call for heat, the icomfortt enabled inte­
grated control runs a self check. The control checks for S10
primary limit, S21 secondary limit (s) and S47 rollout switch
normally closed contacts. The control also checks for S102
high heat and S128 low heat prove switch normally open
contacts. Once self check is complete and all safety
switches are operational, heat call can continue.
NOTE - The ignition control thermostat selection DIP
switch is factory-set in the "TWO-STAGE" position.
Electric Shock Hazard. Can cause
injury or death. Unit must be properly
grounded in accordance with national
and local codes.
Fire Hazard. Use of aluminum wire with this product
may result in a fire, causing property damage, severe
injury or death. Use copper wire only with this
product.
Page 51
WARNING
WARNING