A.O. Smith BTX-100 Service Handbook page 24

Commercial / residential gas water heaters
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ULTRA HIGH EFFICIENCY POWER VENT/POWER DIRECT VENT - SERVICE MANUAL
AIR PRESSURE SWITCH TESTING (CONT)
BLOWER PROVER SWITCH
PRESSURE TEST
BLOCKED INTAKE SWITCH
PRESSURE TEST
BLOCKED EXHAUST SWITCH
PRESSURE TEST
Technical Literature Department
23 of 52
Ashland City, TN © 2008
Servicing should only be performed by a Qualified Service Agent

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