MAINTENANCE INSTRUCTIONS
RK 100 - RAD - ING - MAN.INST - 1311.1 - DIGITECH CS MIAH4
58
6.6.5
Safety thermostat
(fig. 1)
Switch off the power supply;
Un-Plug the connecting wire;
Unscrew the fixing screws and remove the
thermostat;
Replace the thermostat and re-assemble the
components following the above procedure in
reverse order;
Switch on the electricity, water and gas
supplies and restart the appliance;
6.6.6 Heating sensor
(fig. 1)
Switch off the power supply;
Close the drain valves and drain the central
heating circuit of the boiler;
Un-Plug the connecting wire;
Use a 13 mm spanner to remove the heating
sensor;
Replace the sensor and re-assemble the
components following the above procedure in
reverse order;
Switch on the electricity, water and gas
supplies, open the shut-off valves and fill the
central heating circuit. Then restart the
appliance, remembering to discharge any air
that may be trapped in the system.
6.6.7 Gas valve
(fig. 2)
Switch off the power and gas supply to the
boiler;
Remove and dismantle the entire burner unit
(see
6.6.1 “Cleaning the main exchanger
module and combustion unit”
);
Unscrew and remove the screws securing the
gas valve to the venturi;
Replace the gas valve and re-assemble the
components following the above procedure in
reverse order:
Replace all the gas seals;
Fully tighten the gas connections;
Switch on the electricity, water and gas
supplies and check for any gas leaks using a
soapy solution or leak detector spray;
Proceed with the Off-set regulation
(see “5.5
Regulating the Gas Valve Offset ”)
Fig. 1
heating sensor
safety
thermostat
Fig. 2
electronic gas valve
Jets
