6) System layout: Heating only appliance with:
Multiple CH systems (radiators, air handler, floor
heating) Connected tank
Legend
For boiler details refer to layout no. 2.
Combi Combi appliance
RT Room Thermostat
PRV Pressure Relief Valve
DHW Domestic Hot Water
Heating circuit
Cold water in
7) System layout: Combi appliance with:
Heating circuit
Instantaneous DHW system
Heating circuit
Cold water in
8) System layout: Combi appliance with:
Heating circuit
Compensation for increased pressure loss in CH
system Instantaneous DHW system
Legend
For boiler details refer to layout no. 2.
Combi Combi appliance
PRV Pressure Relief Valve
DHW Domestic Hot Water
LLH Low Loss Header
EC External control
RT Room Thermostat