Viessmann AWS 104, Installation And Service Instructions For Contractors

Page: 45 / 124

45
Terminals Function Explanation
211.2 Secondary pump Connection values
■ Max. output: 130 W
■ Voltage: 230 V~
■ Max. switching current: 4 (2) A
Connected at the factory.
■ In systems without a heating water buf-
fer cylinder, no other heating circuit
pump is required (see terminal 212.2)
■ Connect the temperature limiter as max-
imum temperature limiter for underfloor
heating circuit in series (see page 50).
211.4
M r
3-way diverter valve
"Heating/DHW" Connection values
■ Max. output: 130 W
■ Voltage: 230 V~
■ Max. switching current: 4 (2) A
3-way diverter valve connected at the fac-
tory; connect the cylinder primary pump on
site in parallel. In conjunction with the pri-
mary store system:
■ Cylinder primary pump
M
■ 2-way shut-off valve
Controller and sensor PCB D
For curves, see page 95
Plug Sensor Type
F0 Outside temperature sensor Ni500
(PTC)
F4 Buffer temperature sensor, top Pt 500
(PTC)
F6 Cylinder temperature sensor, top Pt 500
(PTC)
F7 Cylinder temperature sensor, bottom Pt 500
(PTC)
F13 System flow temperature sensor (with sensor well, down-
stream of heating water buffer cylinder) Pt500
(PTC)
F14 Flow temperature sensor, cooling circuit (direct heating
circuit A1 or separate cooling circuit) Ni500
(PTC)
Installation sequence
Electrical connection
(cont.)
5724 152 GB
Installation