Amtrol HYDROMAX HM-41L - Manual (Page 7)

6. Ener-G-NET ™ Control Setup & Adjustment
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Ener-G-NET features two distinct programming areas: User Modes and
Installer Settings. User Modes consist of three end-user functional
modes, while Installer Settings are primarily accessed upon initial setup
to specify critical operating parameters. Ener-G-NET factory defaults
allow traditional operation suitable for most homes. To optimize the
control setup, reference the tables below.
Temperature settings above 120° F can create a
scald hazard.
Mode
Indicators
User
Modes
Installer
Settings
LED
Display
User Mode Code Description
Standard
Efficiency
Vacation
Setting Code Description Range
Temperature Domestic hot water setpoint. Default is 120°F 90-150
Differential Domestic hot water temperature drop before call for heat. Default is 10°F. 5,10*
Post-Purge Early boiler shutoff prior to hot water setpoint. Circulator runs until setpoint. Default is 0°F. 0,4,8**
Priority Temporarily cancels space heat to maxmize available energy for hot water. Default is 'n'. y/n
Capacity Water heater capacity; select appropriate size for proper operation. Default is 41 Gallons. 26,41,60,80,120
BTU Transfer Real-time BTU transfer estimate in 1000 BTU/Hr increments. Diagnostic readout only. 0-199MBH/Hr
*Available in Standard Mode only.
**Available only when Differential setting is 10.
Error Code Description Potential Causes***
Temp Sensor Temperature sensor (thermistor) fault.
Sensor unplugged
Sensor damaged
Overheating Domestic hot water temperature has exceeded maximum setpoint.
Error in boiler plumbing
Zone valve stuck open
Leak in sensor well
Slow Heating Unit has taken over 60 minutes to reach hot water setpoint or cannot reach setpoint.
Faulty equipment
Fouled heat exchanger
No fuel
Water Alarm Standing water detected. Standing water
***See Troubleshooting section for additional information
Indicator Code Description
Startup Test
Idle
Heating
On-Demand sensing reduces fuel consumption by limiting boiler operation during idle periods.
Traditional operation within preset temperature differential using a low and high limit.
Displayed briefly during intial powerup to test LED display segments.
Reduced temperature setting minimizes boiler operation during anticipaated periods of non-use.
User Modes are used to select from three distinct operational modes. To select, press the green MODE button and press again to cycle through the three
available modes. A green dot illuminates to display the current mode.
Installer Settings are used to adjust functional operating parameters. To adjust, press and hold the SET button until the Temperature setting appears.
Cycle through settings by depressing the SET button and using the ▼ and ▲ buttons to change the settings.
Diagnostic Error Codes display a visual indicator and sound an alarm if a fault is detected. Codes clear automatically when corrected or can be reset by
interrupting power to the control for 5 seconds. To silence an alarm, depress the ▼ on the keypad.
Operating Indicators are used to display operational and functional status. Water sensor temperature may be shown for 30 seconds by pressing
the ▲ button.
Static numeric [setpoint] readout (factory default shown) indicates domestic hot water setpoint.
Alternating On and [Setpoint] is displayed during a heating cycle while the circulator pump contacts are closed.