ST-81 zPID Charging Boiler Controller

Controller Functionality

control of the fan, CH pump and HCW pump
the possibility of connecting room regulator
zPID software

Controller Equipment

LCD display
CH temperature sensor and HCW sensor
has temperature protection (thermal overload relay)
panel casing for installation of the boiler, made of high quality materials resistant to high and low temperatures
the possibility of installation on the boiler in OM-01 casing

Principle of operation

ST–81 zPID temperature regulator is intended for charging CH boilers. It controls the water circulation pump, hot usable water pump and the fan. Four optional modes of the pumps' operation: house heating, boiler priority, parallel pumps, summer mode. The controller's casing is adjusted to be assembled in the boiler's installation.

Technical data

Specification	Unit
Power Supply	V	230V/50Hz +/-10%
Controller's Maximum Power Consumption	W	2
Ambient Temperature	°C	5÷50
Maximum output load of CH pump	A	0,5
Maximum output load of HUW pump	A	0,5
Maximum output load of fan	A	0,6
Temperature Measurement Range	°C	0÷85
Measurement Accuracy	°C	1
Range of temperature settings	°C	45÷80
Temperature strength of the sensor	°C	-25÷90
Temperature strength of the exhaust sensor	°C	30÷480
Fuse Insert	A	2x3,15