Vaillant VRC 700/2, Installation Instructions Manual

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Appendix
24
Available function Setting the Type of circuit function
Heating Pool circuit Fixed value
circuit Increase in
return flow DHW circuit
Direct cir-
cuit Mixing cir-
cuit
Setting the heating curve x x
– – – –
Setting the minimum flow temperature
for the heating circuit x x
– – – –
Setting the maximum flow temperature
for the heating circuit x x
– – – –
Specifying controller behaviour outside
time periods x x
– – – –
Activating room temperature control x x
– – – –
Activating "Cooling possible" x x
– – – –
Activating the dew point monitoring x x
– – – –
Setting the minimum cooling flow target
value x x
– – – –
Setting the outside temperature at which
to end cooling x x
– – – –
Setting the dew point offset x x
– – – –
Reading the status of the external heat
demand x x x x
– –
Reading the heating pump status x x x x
– –
Reading the status of the heating circuit
mixer
– –
x x x
–
Reading the status of the cylinder char-
ging pump
– – – – –
x
B Overview of the configuration and sensor assignment for the VR 70 and VR 71
B.1 Key to the configuration of VR 70 and VR 71
HCxP: Heating pump for heating circuit x
HCxcl: Heating circuit mixer is closed for heating circuit x, in combination with HCxop
HCxop: Heating circuit mixer is open for heating circuit x, in combination with HCxcl
DEMx: Input for external requirement for heating circuit x
FSx: Flow temperature sensor for heating circuit x
MA: Multi-function output
DHW1: Cylinder temperature sensor
DHWBt: Bottom cylinder temperature sensor
SysFlow: System flow temperature (e.g. in low loss header)
ZV1: Zone valve
BufBt: Bottom cylinder temperature sensor in a buffer cylinder
BufTopDHW: Top cylinder temperature sensor for hot water generation in a buffer cylinder (MSS)
BufBtDHW: Bottom cylinder temperature sensor for hot water generation in a buffer cylinder (MSS)
BufTopHC: Top cylinder temperature sensor for the heating circuit in a buffer cylinder (MSS)
BufBtHC: Bottom cylinder temperature sensor for the heating circuit in a buffer cylinder (MSS)
TD1: Temperature difference sensor 1
TD2: Temperature difference sensor 2
TDO: Output for the temperature difference control function
LP/3WV: Charging pump or 3-way valve for switching to hot water generation
COLP: Solar pump
COL: Collector temperature sensor
3WV: 3-way valve
Installation instructions
VRC 700/2
0020200781_01