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Solution 6: System with two direct multi-zone circuits and a remote hot water tank for preheating domestic hot water
R
M
SE
U E
ACS
R1
SE
TA1
R2
SPS
S2 AUX
SP
TA2
PC1
TZ1
PC2
TZ2
R1
= PC1
R2
= PC2
TA1
= TZ1
TA2
= TZ2
SE
= SE
S2 AUX = SPS
M
Boiler delivery
U
Domestic hot water output
E
Domestic hot water inlet
R
Boiler return
DHW
Domestic hot water
SE
External sensor
PC1
Direct circuit pump 1
PC2
Direct circuit pump 2
TZ1-2
Zone thermostat
SPS
Domestic hot water preheating sensor
SP
Hydraulic separator
Solution 8: System with one direct multi-zone circuit and a remote solar hot water tank for preheating domestic hot water
SPS
SBS
PS
SC
R
E
M U
SE
ACS
S1 AUX
SE
S2 AUX
SP
PC1
R2
S1
PT1000
TZ1
TA1
R1
R1
= PC1
R2
= PS
TA1
= TZ1
S1
PT1000
= SC
SE
= SE
S1 AUX = SBS
S2 AUX = SPS
M
Boiler delivery
U
Domestic hot water output
E
Domestic hot water inlet
R
Boiler return
DHW
Domestic hot water
SE
External sensor
PC1
Direct circuit pump 1
TZ1
Zone thermostat
Vz
Zone valve
PS
Solar pump
SBS
Solar hot water tank sensor
SC
Solar manifold probe
SPS
Domestic hot water preheating sensor
SP
Hydraulic separator