Viessmann VITOCAL 300, Installation And Service Instructions Manual

Page: 23 / 160

A
Power supply from the control
panel (230 V)
B
Temperature limiter for underfloor
heating system
qO
with heating
circuit pump
wW
; switch in series.
Required devices
Pos. Description Qty.
1
Vitocal 300 heat pump 1
2
Three-way diverter valve, heating/DHW 1
4
Diaphragm expansion vessel 1
qW
Outside temperature sensor 1
qE
Room temperature sensor of the direct heating circuit 1
qR
Room temperature sensor of the heating circuit with mixer 1
qT
Overflow valve 1
qZ
Direct heating circuit (radiator heating circuit)
qU
Heating circuit with mixer (underfloor heating circuit)
qO
Temperature limiter (only required for the underfloor heat-
ing circuit) as required
wQ
Heating circuit pump, direct heating circuit 1
wW
Heating circuit pump of the heating circuit with mixer 1
wE
Mixer-3 (heating circuit with mixer) 1
wO
Flow temperature sensor for mixer-3
wE
1
rO
Zero volt contact for central fault messaging (acoustic or
optical alarm equipment, on site) 1
Option "Heating water buffer cylinder"
6
Heating water buffer cylinder 1
7
Buffer cylinder temperature sensor (bottom) 1
8
Buffer cylinder temperature sensor (top) 1
Natural cooling option
qI
Contact humidistat 1
wP
Three-way diverter valve heating/cooling 1
wR
Vitotrans plate-type heat exchanger 1
wT
Frost stat 1
wZ
Circulation pump (primary cooling circuit pump) 1
wU
Mixer-3 (primary cooling circuit) 1
wI
Two-way motorised ball valve 1
rE
Natural cooling extension kit 1
rR
Flow temperature sensor for mixer
wU
1
System version 2
(cont.)
23
Preparing for installation
55
92
901
GB