User manual

Installation manual

ENG

INSTALLATION AND TEST OF THE SAFETY TEMPERATURE LIMITER STB

Installation of safety temperature limiter STB

Unreel the capillary of a safety temperature limiter STB and insert it into the sleeve on

boiler or system’s heat source. It is important that the capillary has very good surface con-

tact with the sleeve wall.

Test of safety temperature limiter STB

Press and hold key

for 5 seconds to activate safety temperature limiter test. Controller

activates boiler or system’s heat source and switches off all other outputs. Boiler is warm-

ing up on temperature 115 °C, i.e. to the temperature 110 ± 2 °C when the safety tempera-

ture limiter STB shall activate. Safety limiter test will automatically expire if safety limiter

has activated or if heat source temperature has exceeded 115 °C or in 20 minutes after the

test has been started. To stop safety limiter test at anytime press key

Activated safety temperature limiter is indicated with red illuminated ring around STB.

Activated safety temperature limiter needs to be reset before continuing with the system

operation. To reset it, wait for the heat source temperature to drop below 100 °C and then

press with appropriate tool into the hole of STB.

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lary tube isn’t sharp bended or damaged. In other case the safety tempera-

ture limiter STB needs to be replaced.