User’s Information Manual
4 SMART SYSTEM control module
Figure 4-2 Status Display Screen
A |
(BOILER |
STATUS) |
C |
(OPERATIONAL |
INFORMATION) |
D |
(LEFT SELECT |
KEY) |
E |
B
(CALL FOR
HEAT)
F
(RIGHT SELECT KEY)
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| (NAVIGATION DIAL) | |
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| Status Display Screens | |||
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| Description | ||||||||||
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| STANDBY |
| The unit has not received a call for heat from a remote thermostat nor | ||||||||||
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| has it received a call for heat from a DHW thermostat. | |||||||||||
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| START |
| The unit has begun a burn cycle and is checking all safety circuits. | |||||||||
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| PREPURGE |
| The unit has initiated a 10 second purge period on a call for heat. | ||||||||||
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| IGNITION |
| The unit has begun a 4 second spark period to ignite the main burner. | ||||||||||
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| % |
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| The unit has fired and is running at the displayed percentage. | ||||||
(Boiler Status |
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| The call for heat has been satisfied and the unit runs the fan for an | |
Bar) |
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| POSTPURGE |
| additional 10 seconds to clear the combustion chamber and vent | ||||||||||
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| system of residual flue products. |
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| SHUTDOWN |
| The unit has been placed in the OFF position. | ||||||||||
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| The controlled temperature has exceeded its set point and its offset. |
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| BLOCKED |
| The unit has detected a condition that has temporarily interrupted | ||||||||||
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| the current call for heat. | |||||||||||
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| Room Thermostat 1 has a call for heat. |
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| Room Thermostat 2 has a call for heat. |
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B |
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| Room Thermostat 3 has a call for heat. |
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(Call for Heat |
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| The tank thermostat or sensor has a call for heat. |
Indicators) |
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| Indicates which room thermostat demand shows priority. | |
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| The unit is being controlled by a 0 - 10V BMS signal. |
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| The member unit is supplying heat while in Cascade Mode. |
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12 
