Lochinvar 51-211 operation manual Call for Heat

Installation & Operation Manual

11 Operating information

Figure 11-2Status Display Screen

A

(BOILER

STATUS)

C

(OPERATIONAL

INFORMATION)

D

(LEFT SELECT

KEY)

E

B

(CALL FOR

HEAT)

F

(RIGHT SELECT KEY)

					(NAVIGATION DIAL)
				Status Display Screens
Section		Display				Description
	STANDBY					The unit has not received a call for heat from a remote thermostat nor
						has it received a call for heat from a DHW thermostat.
	START					The unit has begun a burn cycle and is checking all safety circuits.
	PREPURGE					The unit has initiated a prepurge period on a call for heat.
	IGNITION					The unit has begun a spark period to ignite the main burner.
A
			%			The unit has fired and is running at the displayed percentage.
(Boiler Status
						The call for heat has been satisfied and the unit runs the fan for an
Bar)
	POSTPURGE					additional postpurge period to clear the combustion chamber and
						vent system of residual flue products.
	SHUTDOWN					The unit has been placed in the OFF position.
						The controlled temperature has exceeded its set point and its offset.
	BLOCKED					The unit has detected a condition that has temporarily interrupted
						the current call for heat.
						Heat/Loop Demand 1 has a call for heat.
						Heat/Loop Demand 2 has a call for heat.
B						Heat/Loop Demand 3 has a call for heat.
(Call for Heat						The tank thermostat or sensor has a call for heat.
Indicators)						Indicates which heat/loop demand shows priority.
						The unit is being controlled by a 0 - 10V BMS signal.
						The member unit is supplying heat while in Cascade Mode.

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