OMM-0153_E
• 5/11/2023 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 70 of 124
CENTURION Installation, Operation & Maintenance Manual
SECTION 7: MAINTENANCE
Recommended Periodic Testing
ITEM
FREQUENCY
ACTION BY
REMARKS
Flame signal strength
Weekly
Operator
Check flame strength in
the Edge Controller’s
Unit Status
screen.
Low water level cut off
and alarm
Weekly
Operator
See Section 6.4:
Low Water Level Fault Test.
Slow drain test
Semi-Annually Operator
Perform a slow drain test in accordance with ASME Water
Heater and Pressure Vessel Code, Section IV.
High water temp. safety
control test
Annually
Service Tech
See Section 6.5:
Water Temperature Fault Test
.
Operating controls
Annually
Operator
See Section SECTION 3:
Edge Controller Operation
.
Low air flow
Monthly
Operator
See Section 6.8 and 7.8.
High and low gas
pressure interlocks
Monthly
Operator
See Sections 6.2 and 7.3.
Air/Fuel Valve purge
position switch
Annually
Service Tech
See Section 6.10.
Air/Fuel Valve ignition
position switch
Annually
Service Tech
See Section 6.11.
Safety valves
As required
Operator
Check per A.S.M.E. Water Heater and Pressure Vessel
Code, Section IV.
Inspect burner
components
Semi-Annually Service Tech
See Section 7.6:
Burner Inspection
.
Condensate Trap
Semi-
Annually
Operator
See Section 7.7:
Condensate Drain Trap
.
Oxygen (O
2
) Level
Monthly
Operator
Verify oxygen level is between 3% and 8% during Water
Heater operation.
7.11 Recommended Spare Parts
Recommended Emergency Spare Parts
DESCRIPTION
Part Number
VAC Blower Replacement Kit (460V)
58063-1
VAC Blower Replacement Kit (208V)
58063-2
SSOV Actuator/Regulator Combo - Used on:
•
ALL FM gas trains
•
Downstream
SSOV on DBB gas trains
64048
SSOV Actuator Without Proof of Closure Switch - Used on:
•
Upstream
SSOV on DBB gas trains
27086-1
Actuator Replacement Kit: SSOV with P.O.C. Switch Kit
27086‐2
Actuator Replacement Kit: SSOV with Regulator, POC Switch &
Damping Orifice
64106
Pilot Solenoid Valve, 1/4" NPT FRU Kit
58089
Temperature Switch - Manual Reset
64155-1
Ignitor Rod FRU Kit (component of Flame Rod Assy. 66026)
58023
Optional Spare Parts
DESCRIPTION
PART NUMBER
Edge Controller
64142
Burner
46063
Oxygen Sensor
61026