TSBC Instruction Manual
Page 17 of 48
Front Panel
Display Mode
All values shown in Display Mode are for display only and can not be adjusted by the operator. The
keys scroll through the Display Mode screens:
Boiler State
Standby boiler state shown, refer to the top of pages 6
& 7 for explanation of each boiler state.
Alarm Message
Low Inlet Temp alarm shown, refer to pages 36 & 37
for explanation of all possible alarm messages, the
alarm line is left blank when no alarm is active.
OUT Boiler
Outlet
Temperature
IN
Boiler Inlet Temperature
RST
Remote System Temperature
(visible when ‘Remote Sensor’ = Display Only or
Control)
OA
Outside Air Temperature
(visible when ‘Outdoor Sensor’ = Display Only or
Outdoor Reset)
OUT or RST
Boiler Outlet or Remote System Temperature
(Remote System when ‘Remote Sensor’ = Control)
SP Active
Setpoint
MOD RATE
Modulation Rate
SH
Space Heating (active when DH is not)
DH
Domestic Hot Water Priority
(visible when ‘DHWP’ = Yes and DP input is true)
In
Boiler Inlet Temperature
SP
Min In H2O Temp
MIX VALVE
Modulation Rate
Control Mode
Outlet Sensor & Local SP Mode message shown, refer
to page 2 for an overview of each control mode.
LEAD BOILER
(0 – 8) Lead Boiler, when zero is displayed modulating
lead-lag functions are not available.
CYCLES
Number of boiler cycles
HOURS
Number of boilers operating hours
Home Screen
The Boiler State and Alarm Message screen is the ‘Home Screen’ and is reverted to when no key has been selected for
longer than 30 minutes.
Alarm LED
New alarms illuminate the alarm LED and energize an alarm output (SO) (if enabled). If a lockout condition is detected,
the alarm LED will blink and the lockout indication output (LI) is energized. The display Message is cleared and relays
de-energize when the alarm condition is cleared.
