Installation guide

Ascari MA12 -p. 15 -
2.6.2 - Plumbing
2.6.2.1 - Radiators / Underfloor
• Install the heating system bringing the flow and returns to the boiler location.
• The system should be flushed prior to connecting the boiler to remove all particles from the pipework. Do
not use the fitted pressure relief valve to flush the system as particles trapped in the valve will cause
incorrect valve operation.
• At least one air bleeding device should also be connected to the highest point of the plumbing system to
remove trapped air and ensure silent running of the heating system.
• If using radiators with Thermostatic Radiator Valves a bypass radiator must be fitted with lockshield
valves that will allow a flow of 350 litres/ hour.
• Service valves should be connected to the inlet and outlet of the boiler for easy maintenance.
• Although the boiler can operate without a room thermostat this is required for automatic adjustment of
boiler output temperature.
• Where underfloor heating is being used without hot water cylinder, the 60
o
C thermal cut-out must
connected in place of the factory selected 100
o
C device– see section 4.3.
• A drain cock is required to be fitted in the lowest part of the heating system to allow the system fluid to be
drained fully.
Room
thermostat
Radiators
Service
valves
Under Floor safety limiter
if used with hot water cylinder
Air bleeders
Pump
Expansion
Relief
Valve
Expansion
vessel
Underfloor heating
OR
Drain
tap