Installation guide

Ascari MA12 -p. 16 -
• A filling loop must be installed that isolates from the cold mains water supply from the heating system and
complies with the current building and water regulations in force at the time.
• The boiler incorporates an 8-litre expansion vessel which is suitable for heating systems as follows:
Initial System Pressure (bar) 0,50 0,75 1,00 1,50
Total Water in heating system (litres) 96 84 73 50
For larger systems
Multiply the volume of water
by these factors
0,0833 0,0930 0,1090 0,1560
2.6.3 - Filling Loop
This boiler is not fitted with a filling loop. Any filling loop being fitted should comply with the water supply (water
fittings) regulations 1999 Section G24.1 and G24.2. A filling loop should be fitted at some point to allow the CH
system to be filled.
Two types are shown below:
Stop
valve
Temporary Flexible Hose
Connection
To be removed
immediately after filling
Mains
water
supply
Pressure Pump &
reducing valve
(if required)
Cistern &
Overflow
Mains
water
supply
Heating
System
Return
Double
check
valve
assembly
Stop
valve
Stop
valve
Heating
System
Return
METHOD B
METHOD A
F
F
Recommended and approved method for filling closed circuits in a house (R24-2a Water Regulations Guide)