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V. AMP Boiler Component Identification
1.
Communication Interface (Concert
Digital User interface for operational control of the
appliance.
2.
Main appliance control
Receives and processes input signals from safety
switches and sensors to control the appliance.
3.
Front control box
Slide out control box designed to allow easy access
to the main controls for service.
4.
Rear control box
Houses Field connection PCBs.
5.
ON/OFF switch
Initiates or interrupts the power to the burner.
6.
Main gas valve
Combination air/fuel ratio and automatic safety
shutoff gas valve.
7.
Gas and Air Mixer/Venturi
High Turn-down venturi that mixes air and gas before
entering the blower.
8.
Blower
Modulating blower supplying combustion air to the
appliance.
9.
Bluejet
Burner
R
The high efficiency, low NOx Bluejet
mounted on the burner door.
10. Ignition electrode
Provides electrical spark for direct ignition of the
main burner.
11. High gas pressure switch
Monitors supply gas pressure and shuts off the
electrical control circuit when pressure rises above
the setpoint (see Table 28).
12. Low gas pressure switch
Monitors supply gas pressure and shuts off the
electrical control circuit in the event a low gas
pressure condition occurs (see Table 28).
13. Outlet/Supply
2" Female NPT connection for hot water supply.
14. Water flow switch
Paddle activated switch that monitors water flow. See
Table 19 for minimum and maximum water flow rates.
15. Gas supply connection
Connection to appliance gas train. See Table 28 for
model specific pipe sizes.
16. Inlet/Return
2" Male NPT inlet water connection to the appliance.
10
Control)
17. Hot/outlet water temperature sensor
TM
18. Cold/Inlet water temperature sensor
19. Low water cut off (LWCO)
20. Temperature and pressure gauge
21. Pressure relief valve
22. Condensate drain trap
23. Minimum combustion air proving switch
24. Blocked vent switch
Burner is
R
25. Combustion air filter box
26. Heat Exchanger
27. Heat Exchanger Drain
28. Exhaust Vent Connection
29. Condensate Drain Connection
30. Combustion Air Intake Connection
Dual element temperature sensor for high limit
control.
Used for monitoring the inlet water temperature and
temperature rise across the appliance.
The LWCO safeguards the heat exchanger from
inadequate water level. The LWCO has a manual
reset button.
Provides real time outlet water temperature and
pressure readings.
Protects the heat exchanger from over pressure
conditions. Various pressure settings are available.
Drains condensate from the heat exchanger while
preventing flue gases from escaping through the
drain line.
Ensures adequate combustion air is supplied to the
combustion chamber for ignition.
Interrupts the control circuit if there is a blockage in
the venting system.
Houses the washable combustion air filter.
H stamped, 316L Stainless Steel, Condensing, water
tube type heat exchanger.
3/4" NPT ball valve is provided for draining the heat
exchanger.
Polypropylene adapter for connection to stainless
steel, Polypropylene, or CPVC venting systems. Refer
to Table 6 for model specific vent connection sizes.
1" PVC pipe for condensate drain.
4" female PVC slip provided for 400-500 models.
6" aluminum ring provided for 650-1000 models.
AMP 400-1000L I&O Manual
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