Camus Hydronics Avenger Series - PART 10 MAINTENANCE; 10.1 EXAMINE THE VENTING SYSTEM

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COMPONENT
FAILURE MODE
ANALYSIS
Noisy Operation
• Supply Gas Issue
• Refer to Part 3 Gas Connection in this manual
• Natural Gas Pressure reads between 4” w.c. and 14” w.c.
• L.P. Gas Pressure reads between 8” w.c. and 14” w.c.
• Air/Gas Mixture Issue
• Refer to Section 8.3 Gas Valve Adjustment Procedure for proper
combustion setting
• Air Inlet and/or Vent configuration • Refer to Part 2 Venting and Air Supply
• Dirty/ Damaged Burner
• Refer to Burner Maintenance in section 10.5 of this manual for the
burner removal and inspection procedure. Clean or replace the
burner, if required
• Air in the piping system
• Purge all air from the piping system
Auto Reset High
Limit Trips
• The outlet temperature has
exceeded the set point
temperature specified.
• Alert: 67, 79, 137, 303-310
• ILK OFF
• Verify that the system is full of water and that all air has been
properly purged from the system
• Verify that ∆T does not exceed 60°F across the heat exchanger
• Verify that the boiler is piped properly
• Verify that 120VAC is being supplied to the boiler pump on a call
for heat. If voltage cannot be detected check wiring
• Verify that the pump is circulating when 120VAC is detected. If not,
pump impeller may be stuck
• If 120VAC is present during a call for heat, but the pump still does
not circulate, replace the pump
• Check outlet sensor for proper functionality. At 77ºF (25ºC) the
sensor will show 10kΩ of resistance
Manual Reset High
Limit Trips (if
equipped)
• Manual Reset Safety High Limit
tripped, outlet temperature in
excess of 210ºF
• Alert: 67, 79, 137, 303-309
• ILK OFF
• Verify that the system is full of water and that all air has been
properly purged from the system
• Verify that the boiler is piped properly
• Verify that 120VAC is being supplied to the boiler pump on a call
for heat. If voltage cannot be detected check wiring
• Verify that the pump is circulating when 120VAC is supplied. If so,
pump impeller may be stuck. Use a flat head screwdriver on face of
pump to turn impeller manually
• If 120VAC is present during a call for heat, but the pump still does
not circulate, replace pump
Delta-T Limit
Tripped
• Inlet and Outlet temperature has
exceeded 70ºF
• Alert: 124
• Verify that the system is full of water and that all air has been
properly purged from the system
• Verify that the boiler is piped properly
• Verify that 120VAC is being supplied to the boiler pump on a call
for heat. If voltage cannot be detected check wiring
• Verify that the pump is circulating when 120VAC is detected. If not,
pump impeller may be stuck
• If 120VAC is present during a call for heat, but the pump still does
not circulate, replace the pump
• Purge all air from the piping
• Verify boiler water pressure exceeds 12 PSI
Temperature
Overshoot
• Stack temperature has exceeded
the limit temperature.
• Alert: 125
• The stack temperature has exceeded the maximum temperature
allowed.
• CPVC: 194ºF
• PPE: 230ºF
• AL29-4C, Stainless Steel: 300ºF+
• Measure the resistance of the flue sensor at room temperature, it
should be approximately 10kΩ
• Outlet temperature has exceeded
target temperature.
• Alert: 67, 79, 137, 303-309
• ILK OFF
• Check outlet sensor. It should be firmly inserted in well
• Water flow may be too low and allows burner to run longer than
required creating a reservoir of hot water in the center of the heat
exchanger. Check Central Heat and/or DHW PID parameters
P=60, I = 20, D=0 provides quickest response
• Lower target to modulate burner off sooner
• If modulating pump is supplied, increase the pump speed to
prevent outlet temperature overshoot
Sensor Not
Connected
• Inlet sensor, Alert: 91
• Outlet sensor, Alert: 92
• DHW sensor, Alert: 93
• Flue sensor, Alert: 95
• Outdoor sensor, Alert: 96
• Verify sensors are connected
• Verify wiring
• Measure resistance of sensors at room temperature, 10kΩ sensors
• Replace sensor if necessary