Pumping substation
Pump station management consisting of pump unit and modulating 3-way valve
Control unit for pump pair management (alternating working with time switchover or in case of single pump block) and mixing valve with fixed point or climatic curve adjustment thanks to the availability of an external air temperature probe.
It also allows the acquisition of delivery and return temperatures to the users.
Available in stand-alone version or on electrical box equipped with electrical protections and decoupling relays.
ON-OFF PUMPS/VALVE
Operable from digital input or display/supervision
HEATING/COOLING MODE
Mode change by digital input or display/supervision
TEMPERATURE ACQUISITION
Fluid temperature acquisition FROM and TO UTILITIES and outside air temperature
PUMP GROUP
Group management of two pumps operating in exchange depending on operating hours or alarm intervention of the working one
MIXING VALVE
Mixing valve management with modulating servomotor 0..10 V in fluid temperature function TOWARDS UTILITIES and possibility of calculating set-point according to summer / winter climatic curve and outdoor air temperature
ANALOGUE INPUTS
AI1 Delivery temperature
AI2 Return temperature
AI3 On/Off
AI4 Heating/Cooling
AI5 Outdoor air temperature
ANALOGUE OUTPUTS
AO3 3-way valve (0..10 V)
AO4 –
AO5 –
DIGITAL INPUTS
DI1 Pump alarm 1
DI2 Pump alarm 2
DIGITAL OUTPUTS
DO1 Pump 1
DO2 Pump 2
DO3 –
DO6 Alarm in progress
Notes
- 230 Vac electrical unit/box power supply
- Analogue inputs of NTC type
- Dry contact type digital inputs
- Analog outputs 0..10 V
- RS485 serial connection (MODBUS RTU protocol)
