TSBC Instruction Manual Page 43 of 48
Specifications
General
Mechanical:
Panel Assembly: 8 inches wide x 6 inches tall
Message Display: 2 x 16 Character, 8.06 mm characters
Environmental:
Operating Temp: 32 to 140 F (0 to 60 C)
Storage Temp: -20 to 150 F (-28 to 65 C)
Humidity Limits: 15 to 95% (non-condensing)
Front Panel: NEMA 1
Electrical:
Power Supply: 24Vac
Note: All 24Vac Inputs must be connected to the same phase as (PR)
Internal Power Consumption: 8 VA max, 24 Vac (+/- 15%), and 6 VA max,
12 Vdc 0.5A for LO, VI, BP, SP and SO
Discrete Inputs:
Terminal Description
Rating
DP Domestic Hot Water Priority (DHWP) 12 Vdc / 1 mA
LR Local / Remote 12 Vdc / 1 mA
RO Remote On / Off (Enable) 12 Vdc / 1 mA
SI Spare Input (Programmable) 12 Vdc / 1 mA
LC Low Water Cutoff Switch 24 Vac / 1mA
OO Burner On / Off Switch 24 Vac / 1mA
WF Low Water Flow 24 Vac / 1mA
GP High and Low Gas Pressure Switches 24 Vac / 1mA
HL Operating or High Limit 24 Vac / 1mA
CA Low Combustion Air Flow 24 Vac / 1mA
CS Fuel Valve Energized 24 Vac / 1mA
AL Flame Safeguard Alarm 24 Vac / 1mA
Discrete Outputs:
Terminal Description
Rating
CH Call For Heat (CFH) 24 Vac / 10A
LO Lockout Indicator 12 Vdc / 100mA
VI Spare Output 12 Vdc / 100mA
BP Boiler Pump 12 Vdc / 100mA
SP System Pump 12 Vdc / 100mA
SO Spare Output (Programmable) 12 Vdc / 100mA
Analog Inputs:
Terminal Description Rating
BO Boiler Outlet Water Temperature 10k Thermister, 5Vdc, 5 mA max load
BI Boiler Inlet Water Temperature 10k Thermister, 5Vdc, 5 mA max load
O+
O -
Outside Air Temperature 10k Thermister, 5Vdc, 5 mA max load
R+
R -
Remote System Temperature 10k Thermister, 5Vdc, 5 mA max load
C+
C -
Remote Modulation Rate or Remote Setpoint
0-10 Vdc (~100K ohm impedance)
1Vdc = 0%, 9Vdc = 100%
Analog Outputs:
Terminal Description Rating
P+
P-
Modulation Rate Output to Mod Motor
0 – 100 % Duty Cycle, 0V – Off, ~10V - On
V+
V-
0 – 10 V, 5 mA max
MS
MR
Mixing Valve Output 4-20mA
4 mA = 0 % Open, 20 mA = 100% Open
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