Immergas DIM 2 ZONE ERP - 3 Checks and Maintenance

15
INSTALLERUSER
MAINTENANCE TECHNICIAN
3
CHECKS AND
MAINTENANCE
- Check connection to a 230V-50Hz power
mains via an omni-polar disconnector (magne-
tothermal circuit breaker), correct L-N polarity
and the earthing connection;
- check that the magnetothermal circuit breaker
is working properly;
- make sure the central heating system is lled
with water and that the pressure gauge indicates
a pressure of 1-1.2 bar;
- make sure that the air valve cap (if present)
is open and that the system is appropriately
de-aerated;
- check the activation of the main switch located
upstream of the appliance;
- check the sealing eciency of water circuits;
- check the correlation between the electric and
hydraulic connections;
- (only for DIM H-LT or H-2LT) with request
for heat in the mixed zones, check the correct
opening and closure of the mixing valve,
opening the latter to check the system safety
thermostat intervention (the boiler ow tem-
perature must be set over 60 °C).
Even if just one single safety check provides a
negative result, do not commission the system.