10
AMPW 400-1000L I&O Manual
IV. AMP Water Heater Component Identification
1. Communication Interface (Concert
TM
Control)
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
R
Burner
The high efficiency, low NOx Bluejet
R
Burner is
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
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
13. Outlet/Hot water connection
2" Female NPT connection for hot water supply.
14. Water flow switch
Paddle activated switch that monitors water flow. See
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/Cold water connection
2" Male NPT inlet water connection to the appliance.
17. Hot/outlet water temperature sensor
Dual element temperature sensor for high limit
control.
18. Cold/Inlet water temperature sensor
Used for monitoring the inlet water temperature and
temperature rise across the appliance.
19. Low water cut off (LWCO)
The LWCO safeguards the heat exchanger from
inadequate water level. The LWCO has a manual
reset button.
20. Temperature and pressure gauge
Provides real time outlet water temperature and
pressure readings.
21. Temperature and pressure safety relief valve
Protects the heat exchanger from over pressure and
over temperature conditions. The AMP water heater
comes standard with a 150 PSI temperature and
pressure relief valve.
22. Condensate drain trap
Drains condensate from the heat exchanger while
preventing flue gases from escaping through the
drain line.
23. Minimum combustion air proving switch
Ensures adequate combustion air is supplied to the
combustion chamber for ignition.
24. Blocked vent switch
Interrupts the control circuit if there is a blockage in
the venting system.
25. Combustion air filter box
Houses the washable combustion air filter.
26. Exhaust vent connection
Polypropylene adapter for connection to stainless
steel, Polypropylene, or CPVC venting systems. Refer
to Table 6
for model specific vent connection sizes.
27. Heat Exchanger
HLW stamped, 316L Stainless Steel, Condensing,
water tube type heat exchanger.