Lamborghini Caloreclima ERA 31 BS 130, Installation And Maintenance Manual

Page: 49 / 108

49
CIRCULATOR PRESSURE GRAPH
Available pressure at the links
AIR BLEEDING FROM BOILER AND WATER HEATER
During the water heater system filling particular attention must be payed to the air bleeding.
Operate as follows:
- Make sure that the manual and automatic air bleed valves are open
- Turn the unidirectional valve spring exclusion screw (exploded reference) to horizontal position (perpen-
dicular to the water flow)
- Make sure that the main switch is off
- Fill by turning the loading tap and making water flow in very slowly
- Close the manual valves as they start pouring water in a sequence
- When the manometer shows the desired pressure (0.3
÷
0.5 bar above the plant hydrostatic pressure), close
the loading tap.
- Ignite the boiler to Summer position and let the hot water circulator operate for some minutes
- Stop the circulator, turning the main switch, and make sure that only water flows from the manual air bleed
valves. If air is released, repeat the operation
- Turn the unidirectional valve spring exclusion screw (exploded reference) to the initial position (parallel to
the water flow)
- Check the pressure on the manometer again