Camus Hydronics Avenger Series, Installation, Operation And Service Manual

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1.3 CHECKING EQUIPMENT
Check for signs of shipping damage upon receiving equipment. Pay attention to parts accompanying the boiler, which may show signs of
mishandling. Verify total number of pieces shown on packing slip with those received. In case there is damage or a shortage, immediately
notify carrier.
Figure 2: Checking the Avenger Unit
Do not attempt to pry any panels off. To begin disassembly, you can remove the top panel and side panels without the use of any tools.
Once you have removed the top panels, carefully check and confirm that all ¼” copper tubing connections are intact and have not broken
or loosened in shipment. Leaks at any connections on these lines will result in erratic appliance operation.
1.4 SEQUENCE OF OPERATION
1. Supply power connection as per Table 9.
2. The power switch is placed in the “ON” position.
3. 120 VAC power is supplied to the control transformer.
4. 24 VAC is supplied to the ignition module and low voltage controls.
5. After the appliance water pump starts, flow is proven by the Flow Switch and Water Pressure Switch. The Water Pressure
Switch is set to 12 PSI or higher and is installed inside the unit’s jacket. The Flow Switch is mounted at the outlet of the
appliance. If installing a Flow Switch, it is required to properly trim the Flow Switch Paddles in order not to jam the switch in the
tee. The normally open dry contacts in the Low Water Cutoff (LWCO) are to be wired in series with the normally open contacts
of the Flow Switch. Locate the probe type LWCO in the piping above the boiler inlet/outlet connection. In all cases, check with
local codes.
6. The Avenger controller receives a call for heat via the remote operator contacts and the Demand parameter reads Central
Heating, DHW, or Lead Lag Slave.
7. The Avenger controller closes the pump contacts to start the pump, which then causes the Flow Switch to close once minimum
flow is reached. If all limit controls are made including temperature, water pressure and water flow, the controller closes the
blower contacts to initiate the variable frequency drive (VFD) and allows 60 seconds for VFD to ramp up the frequency to the
3 phase motor of the Combustion Fan using the modulating signal provided by the on board modulating control or the remote
operating system. If the Low Air Switch contacts are made within the 60 seconds, the VFD will run at Pre-Purge speed until the
Pre-Purge timer is satisfied.
8. Once the Pre-Purge Timer is satisfied, the Avenger controller will target the ignition fan speed.
9. a) AR1000 – AR2500 (Direct Ignition) : The Avenger controller will activate the Hot Surface Igniter for 28 seconds followed by
energizing the Low-End Gas Valve. A signal of 0.8 Vdc minimum must be recognized by the controller at the UV Scanner to
keep the Low-End Gas Valve in the open position. The fan is kept at ignition speed until the flame is stabilized. As demand