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5833 275 - 04
Vitotrans 300 Installation, Operating and Service
Operation
Information
Displays the current operating condition.
Pumps
System Pump A
Operational status of main system pump A, will run anytime there is demand for DHW.
System Pump A Speed
Modulating signal to pump A (20%-80%)
System Pump B
(S3HA/D3HA 90 only)
Operational status of main system pump B, may run in conjunction with pump A when
there is demand for DHW.
System Pump B Speed
(S3HA/D3HA 90 only)
Modulating signal to pump B (20%-80%)
DHW Recirculation
Operational signal for DHW recirculation pump, will activate according to schedule
programmed by contractor.
Descaling Pump
Operational status of descaling pump, will run continuously whenever the unit is in standby.
Tank Loading Pump
Operational signal for DHW storage tank loading pump, will activate when there is a
demand to recover the DHW storage tank.
Domestic Hot Water
DHW Setpoint
Domestic hot water setpoint temperature
DHW Temperature
Dual sensor actual DHW temperature A
DCW Temperature
Domestic cold water incoming temperature
DHW Flow Rate
Actual domestic hot water draw rate
Heating System
Supply Temperature
Actual heating system supply water temperature
Return Temperature
Actual heating system return water temperature
System Flow Rate
Actual heating system flow rate through the unit
System Demand
Call for heat to the heating system