ST-88 zPID Charging Boiler Controller

Controller Functionality

automatic control of the fan
control of CH pump , HUW pump, floor pump, and circulation pump
the possibility of connecting ST-65 GSM module (*option)
the possibility of connecting ST-500 ETHERNET module (*option)
zPID software

Controller Equipment

LCD display
knob of the pulse generator
CH temperature sensor, HCW sensor and waste gas sensor
has temperature protection (thermal overload relay)
casing made of high quality materials resistant to high and low temperatures
the possibility of installation on the boiler in OM-02 casing

Principle of operation

ST–88 temperature regulator is intended for charging CH boilers. It controls the CH 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%
Maximum power consumption of the controller	W	5
Ambient temperature	°C	5÷50
Maximum output load of CH pump	A	0,5
Maximum output load of HUW pump	A	0,6
Maximum output load of fan	A	0,6
Range of temperature settings	°C	45÷80
Accuracy of measurement	°C	1
Temperature strength of the sensors	°C	-25÷90
Temperature strength of the exhaust sensor	°C	30÷480
Wkładka bezpiecznikowa	A	2x3,15