Danfoss Heating
11
GB
3.6 Typical Fully Pumped System with Spring
Return Zone Valve in each Service
Other Danfoss Randall products suitable for use with above circuit:-
AT cylinder thermostat
2 x HP22 or HP28 motorised zone valve with spring return actuator
and SPST auxiliary switch
N L 1 2 3 4 5 6
3 amp fuse
D.H.W.
HTG
ON
OFF
Mains
Supply
N
L
Programmer
Terminals
N
N
S.R.Z.V.
in HTG
Room
Stat
ON
OFF
N
Boiler
Cyl.
Stat
Links
N
S.R.Z.V.
in DHW
