Technical data

31
STRATA1
P
WC
RS
SV
IV
IV
IV
LSV
DOC
DOC
DOC
Condense Waste
Expansion Vessel
Filling Point
System Pump
HW M/Valve
CH M/Valve
Reg Valve
Heating Load
Indirect Cylinder/Calorifier
CS
Low Velocity Mixing Header Max Velocity 0.5 m/s
CWM
Strainer
AAV
AAV
PS
17.0 hydraulic system design
P= Programmer
WC= Wiring Centre/Junction Box
RS= Room Thermostat
CS= Cylinder Thermostat
PS= Low water pressure cut off switch
Typical Single Strata 1 boiler installation serving heating and domestic
hotwater via a system pump and 2Nr 2Port motorised valves with
conventional controls i.e. programmer, room stat & cylinder stat.
NOTE: system temperature will be fixed constant and direct-on-boiler
weather compensation is not possible.
System Type 8