Lochinvar WH 55 - 399 manual Call for Heat

Page 13

User’s Information Manual

4 SMART SYSTEM control module (continued)

Figure 4-2Status 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 10 second purge period on a call for heat.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IGNITION

 

 

The unit has begun a 4 second 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 10 seconds to clear the combustion chamber and vent

 

 

 

 

 

 

 

 

 

 

 

 

 

 

system of residual flue products.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SHUTDOWN

 

 

The unit has been placed in the OFF position.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SETPOINT MET

 

 

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.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Room Thermostat 1 has a call for heat.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Room Thermostat 2 has a call for heat.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B

 

 

 

 

 

 

 

 

 

 

 

 

 

Room Thermostat 3 has a call for heat.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Call for Heat

 

 

 

 

 

 

 

 

 

 

 

 

 

The tank thermostat or sensor has a call for heat.

Indicators)

 

 

 

 

 

 

 

 

 

 

 

 

 

Indicates which room thermostat demand shows priority.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The unit is being controlled by a 0 - 10V BMS signal.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The member unit is supplying heat while in Cascade Mode.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

13

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Contents User’s Information Manual Models WH 55 Contents Please read before proceeding Boiler service and maintenanceProducts to avoid Prevent combustion air contaminationAreas likely to have contaminants Owner maintenance Maintenance schedule Service technicianSee pages 6 8 for detailed instructions Inspect/check condensate lines and fittings Maintenance scheduleCondensate disposal Clean/Inspect Trap AssemblyTest low water cutoff if installed 1Operating Instructions Models 55 Operating instructionsOperating instructions Smart System control module InstallerUser Time and dateNight Setback Override Temperature UnitsSpace heating SH1, SH2, SH3 and tank set points Call for Heat Information Right Select no