tekmar 420 Boiler Reset Module - Manual (Page 4)

© 2007 D 420 - 08/07 4 of 24
PUMP
Displays when the primary or mixing pump
is in operation.
BURNER
Displays when the burner contact is
closed.
LOCK
Displays when the access levels are
locked.
WARNING
Displays when an error exists.
COMMUNICATION BUS
Displays when tN4 thermostats are
connected.
DHW PUMP
Displays when the DHW Pump is in
operation.
°F, °C, %, HOURS, MINUTES
Units of measurement.
BOILER DEMAND
Displays when a boiler demand is present.
DHW DEMAND
Displays when a DHW demand is present.
SETPOINT DEMAND
Displays when a Setpoint demand is
present.
DEVICE OUTPUT SCALE
Displays output of the modulating boiler.
Item Field
Displays an
abbreviated name
of the selected item
Number Field
Displays the
current value of
the selected item
Status Field
Displays the current
status of the control’s
inputs, outputs and
operation. Most symbols
in the status field are
only visible when the
VIEW Menu is selected
Menu Field
Displays the
current menu
Symbols Description S Display
Symbols Description