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Technical Literature Department 23 of 52 Ashland City, TN © 2008
Servicing should only be performed by a Qualified Service Agent
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