Status Display Screens - Lochinvar HERALD HCB46CE Installation Manual

16.4

STATUS DISPLAY SCREENS

Section Display
STANDBY
START
PREPURGE
IGNITION
A (Boiler
%
status
bar)
POSTPURGE
SHUTDOWN
SETPOINT MET
BLOCKED
1
2
B (Call
3
for heat
indicators
)
Section Display
DETAILS SCREEN 1
C(Operational
DETAILS SCREEN 2
Information)
I/O SCREEN
The unit has not received a call for heat
The unit has received a call for heat and is checking all safety circuits
The unit has received a call for heat and has initiated a pre-purge period
The unit has initiated the spark ignition to the main burner
The unit has fired and is running at the displayed firing rate
The call for heat has ended, the unit runs the fan for a set period to purge the
combustion chamber and vent the system of additional flue products
The unit is in the OFF position
The control temperature has exceeded the set point and offset
The unit has detected a condition that has temporarily interrupted the call for
heat
Room thermostat 1 has called for heat
Room thermostat 2 has called for heat
Room thermostat 3 has called for heat
DHW tank thermostat or sensor has called for heat
Indicates which room thermostat has priority
The unit is being controlled by a 0-10V BMS signal
The member unit is supplying heat whilst in Cascade mode
a. SYSTEM TEMP
b. TANK TEMP
c. OUTDOOR TEMP
d. INLET TEMP
e. OUTLET TEMP
f. DHW RECIRC TEMP temperature of DHW recirc sensor if fitted
a. DELTA T
b. FLUE TEMP
c. FLAME CURRENT
d. FAN SPEED
e. LOOP 1 TEMP
f. LOOP 2 TEMP
g. LOOP 3 TEMP
a. GAS PRESSURE SW
b. FLOW SW
c. LOUVRE RELAY
d. LOUVRE SW
e. BLOCKED DRAIN
f. GAS VALVE
Description
Description
as reported by the MTLC control
as reported by the MTLC control
as reported by the MTLC control
58