Thermo Products OPB (24 User Manual

All installations and services must be performed by qualified service personnel. 
 

3. Operational Check 

     

check out procedures 

NOTICE: After reassembling the appliance, check for fuel oil leakage from 
the supply piping.  

a.  Check proper operation of the ignition system and for proper combustion.  

 

b.  Observe the main burner flame. If the flame appears strange or abnormal in 

character, look for a component or components that were not reassembled 
correctly. If the components have been reassembled correctly, check for a 
blocked vent, malfunctioning combustion air blower or fuel pump, and partially 
blocked burner nozzle.  

 

Correctly reconnect any wires removed during servicing. Wiring errors can 
cause improper and dangerous operation.  Dangerous operation can result in 
injury or damage. 
 
1.  Check all wiring for loose connections and any signs of damage, or unusual 

wear. Replace any damaged or frayed wiring and tighten any loose connections. 

 

2.  Use a voltmeter, or a multimeter, to check for adequate voltage at the field 

connections when the appliance operating. 
 

3.  Use an ammeter, or a multimeter, to check the current draws of the blower 

motor, burner assembly, and air conditioning compressor to assure they are not 
exceeding rating label current specifications for each component. Also, refer to 
Table 5 for electrical specifications on these components. 
 

4.  Check for correct operation and proper settings (if manually adjustable) of all 

controls.  
 

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