Installation - Digital Control Set-Up
Mode
Indicators
LED
Display
Settings
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.
Setting
Code
Temperature
Differential
Post-Purge
Priority
Capacity
BTU Transfer
Diagnostic Error Codes
To silence an alarm, depress the ▼ on the keypad.
Error
Code
Temp Sensor
Overheating
Slow Heating
Operating Indicators
the ▲ button.
Indicator
Code
Startup Test
Idle
Heating
User
Modes
Installer
Settings
Front Panel
Control
Screws (4)
Wiring Cover
Conduit Holes (3)
Ground Screw
Temperature
Sensor Plug
Domestic hot water setpoint. Default is 120°F
Domestic hot water temperature drop before call for heat. Default is 10°F.
Early boiler shutoff prior to hot water setpoint. Circulator runs until setpoint. Default is 0°F.
Temporarily cancels space heat to maxmize available energy for hot water. Default is 'n'.
Water heater capacity; select appropriate size for proper operation. Default is 41 Gallons.
Real-time BTU transfer estimate in 1000 BTU/Hr increments. Diagnostic readout only.
Codes clear automatically when corrected or can be reset by interrupting power to the control for 5 seconds.
Temperature sensor (thermistor) fault.
Domestic hot water temperature has exceeded maximum setpoint.
Unit has taken over 60 minutes to reach hot water setpoint or cannot reach setpoint.
Water sensor temperature may be shown for 30 seconds by pressing
Displayed briefly during intial powerup to test LED display segments.
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.
After wiring per the appropriate diagram in this manual, insert the white
temperature sensor (thermistor) plug into the receptacle at the base of
the digital control. Zone valves can be slow actuating. Therefore, the
zone valve sensor contains a built-in temperature offset to account for the
time it takes the zone valve to fully close. This results in potable water
temperature that is representative of the digital control temperature set
point. This is why it is important to install the correct sensor into the digital
control. See Page 3 for information regarding the selection of a circulator
or zone valve.
Temperature settings above 120° F can create a
scald hazard.
Description
Description
Description
-7-
Range
90-150
5,10
0,4,8*
*Available only when
Differential setting is 10.
y/n
26,41,60,80,120
0-199MBH/Hr
Potential Causes
Sensor unplugged
Sensor damaged
Error in boiler plumbing
Zone valve stuck open
Leak in sensor well
Faulty equipment
Fouled heat exchanger
No fuel
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