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How is the S-Flex wired to use or not use the Smoke Purge feature?

Issue:
How is the S-Flex wired to use or not use the Smoke Purge feature?

Product Line:
S-Flex

Environment:
S-Flex with Bypass option

Cause:
Wiring to enable or disable smoke purge

Resolution:
All S-Flex units that have the BYPASS option will also have a SMOKE PURGE feature.  This includes a smoke purge relay, SPR, that is activated by applying 120Vac across terminals 17-18.  When activated, SPR contacts will disable the AFC / BYP controls and energize the bypass contactor coil.  The motor will run with full voltage AC power.
If the smoke purge feature is not to be used, it is recommended that the SPR contact functions be disabled.  Simply remove the jumper on terminals 9-10 and install it on terminals 1-2.





 
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