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70
1.4
Sequence of Operation
Operational State
User Interface Display
Explanation
Boiler operates in standby mode
until demand for Central Heat (CH)
or Domestic Hot Water (DHW) is
detected.
CH or DHW pump is turned on based
on type of heating demand.
(CH call is illustrated)
Control Module compares supply
Temperature to set point. Boiler
proceeds to ignition if supply
temperature is less than set point.
Combustion Air Blower speed
modulates to pre-purge setting for 15
seconds.
Sparking initiated sequence.
Heat
Demand?
DHW CH
Pump on
Supply
Temperature
<Setpoint?
15 Second
Prepurge
Ignition
Sparking
No
Yes
No
Yes
After 2 seconds
APPENDIX A - CONTROL MODULE
Содержание VX-050
Страница 49: ...49 13 TROUBLE SHOOTING...
Страница 51: ...51 13 TROUBLE SHOOTING...
Страница 63: ...63 14 1 Connection Diagram 050 075 100 MBH 14 WIRING DIAGRAM...
Страница 64: ...64 14 2 Schematic Diagram of Ladder Form 050 075 100 MBH 14 WIRING DIAGRAM...
Страница 65: ...65 14 3 Connection Diagram 150 200 MBH 14 WIRING DIAGRAM...
Страница 66: ...66 14 4 Schematic Diagram of Ladder Form 150 200 MBH 14 WIRING DIAGRAM...
Страница 83: ...83 PRIMARY LOOP EQUIVALENT LENGTH CALCULATION PUMP SELECTION 50 75 100 MBH...
Страница 84: ...84 PRIMARY LOOP EQUIVALENT LENGTH CALCULATION PUMP SELECTION 50 75 100 MBH...
Страница 85: ...85 PRIMARY LOOP EQUIVALENT LENGTH CALCULATION PUMP SELECTION 150 200 MBH...
Страница 86: ...86 PRIMARY LOOP EQUIVALENT LENGTH CALCULATION PUMP SELECTION 150 200 MBH...
Страница 87: ...87 NOTES...
Страница 88: ...DUNKIRK BOILERS 2201 Dwyer Avenue Utica NY 13501 web site www ecrinternational com...