Viessmann AWS 104, Installation And Service Instructions For Contractors

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11
Pos. Description
Primary circuit
wO External unit of the heat pump
DHW heating
eP DHW cylinder
eQ Cylinder temperature sensor, top
eW Cylinder temperature sensor, bottom
eU DHW circulation pump
External heat source
qR High limit safety cut-out for switching off the secondary pump (on-site)
tP External heat source, e.g. oil boiler
tQ
External heat source demand (connection to external heat source)
tW Circulation pump for cylinder reheating
tE Boiler water temperature sensor (connection to heat pump control unit)
tR Directly controlled mixer motor
tT High limit safety cut-out 70 °C for shutting down the external heat source
(on site)
Heating water buffer cylinder
zP Heating water buffer cylinder
zQ Buffer cylinder temperature sensor
zW System flow temperature sensor
Heating circuit with mixer (M2)
uP Underfloor heating circuit with extension kit for one heating circuit with
mixer
uQ Vitotrol 200A remote control
uE Flow temperature sensor
uR Temperature limiter as maximum limiter for underfloor heating systems
uZ Heating circuit pump
uU Mixer motor - 3-way mixer
q¢T Extension kit for one heating circuit with mixer
Heating circuit without mixer (A1)
oP Radiator heating circuit
oQ Vitotrol 200A remote control
oZ
Heating circuit pump
Electrical installation scheme
For an overview of the electrical connec-
tions and more information on the PCBs,
see from page 41 onwards and the
separate service instructions for the heat
pump control unit. For information regarding the power sup-
ply, see page 58.
Preparing for installation
System example 1, ID: 4605169_1005_01
(cont.)
5724 152 GB
Installation