Viessmann AWT 221.A04, Installation And Service Instructions For Contractors

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83
Pos. Part
0001 Programming unit
0002 Controller and sensor PCB with cover (CU401)
0005 Main PCB with cover (MB761)
0006 Expansion PCB with cover (SA135)
0007 Coding card
0008 AVI PCB (IU122-A10)
0009 Base support, controller and sensor PCB
0010 Base support, main PCB
0011 Luster terminals with cable harness 230 V~
0013 Switching module for instantaneous heating water heater
0017 Programming unit
0018 Locking bolts, left/right
0019 Slider, left/right
0020 Fibre optic cable
0023 Cable trunking (set)
0024 Cable channel
0025 Body-bound rivet
0030 Spring clip
0032 Control unit support
0033 Back panel, programming unit
0034 Retaining spring
0035 Outside temperature sensor NTC 10 k
Ω
0037 Separator
0039 Service instructions for Vitotronic 200, type WO1C
0040 Operating instructions for Vitotronic 200, type WO1C
Parts not shown
Pos.
Part
0003 PCB with connection adaptor (SA136-A10)
0004 PCB with connection adaptor, ON/OFF switch (SA137-A10)
0012 Instantaneous heating water heater connecting cable
0014 Secondary pump connecting cable
0015 Connecting cable, 3-way diverter valve
0016 Low voltage cable harness
0021 4-pole connecting cable, length 85 mm
0022 Ribbon cable AWG 28, 24 x 0.09 mm
0026 Mating plug for main PCB
0027 Mating plug for controller and sensor PCB
0028 Mating plug for expansion PCB
0029 Cable harness, low voltage, for AVI PCB
0031 Fuse 6.3 A (slow) (set)
0036 Cylinder temperature sensor NTC 10 k
Ω
Indoor unit parts lists
Indoor unit electrical equipment
(cont.)
5776 028 GB
Components