Orlanski ORLIGNO 500 Instruction Manual & Service Manual page 21

Electric connection of equipment to the boiler's controller.
Low-voltage contact
Tco- temperature sensor connection for central heating
Tcwu- sensor connection for hot water pump
Tbg- sensor connection in upper part of the buffer
Tbd- sensor connection in down part of the buffer
Rpok- room thermostat connection
High-voltage contact
M.co- mixing valve's actuator connection
P.cwu- hot water pump connection
P.bu- buffer pump connection – pump responsible for maintaining right return temperature to the boiler
P.co- central heating pump connection
Room thermostat
Controller enables to cooperate with any room thermostat with closing contact.
Room thermostat should be installed in a representative room in the house with respect to temperature
at 1,5-2m height.
One shouldn't install room thermostat close to any heat source ( TV, radiator), direct sun radiation or
places exposed to draught.
Pic.4 Room thermostat connection.
Room thermostat ex.
EUROSTER, AURATON
NO
COM
NC
Boiler controller
Pellets control
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