Viessmann Vitocal 242-S Installation And Service Instructions Manual page 83

Internal unit hydraulics
Pos. Part
0001 Back panel, lower casing
0002 Bottom panel
0003 Top panel, lower casing
0004 Angle profile, lower casing, left
0005 Angle profile, lower casing, right
0006 Retaining rail
0007 Retainer, evaporator/condenser
0008 Insulation, bottom panel
0009 Connection line, heating water flow
0010 Hose, heating water return
0011 Line, heating water return (heat meter adaptor)
0012 Connection, instantaneous heating water heater
0013 Pipe bend, DHW flow
0014 Condenser assembly
0015 Heat exchanger for cylinder loading system
0016 Instantaneous heating water heater with high limit safety cut-out
0017 3-way diverter valve
0018 Pipe connector
0019 Locking ring fitting
0020 Adjustable feet (4 pce)
0021 Lower hinge section for casing door
0022 Upper hinge section for casing door
0023 High efficiency circulation pump with PWM control
0024 Fastening UNF for hot gas line
⅞
0025 Fastening UNF for liquid line
⅝
0026 Pressure sensor (ICT)
Valve body ⁷⁄₁₆
0027
0028 Schrader valve
0029 Spring clip
0030 Air vent valve G
0031 Threaded pipe clip
0032 Threaded pipe clip
0033 Union nut G with sealing cap
¼
0034 Union nut UNF for hot gas line
⅞
0035 Union nut UNF for liquid line
⅝
0036 Temperature sensor Pt500A
0037 Diaphragm grommet
0038 Diaphragm grommets
0039 O-ring 28 x 2.5 mm
7
0040 O-ring 34 x 2.0 mm
7
0041 Gaskets A 23 x 30 x 2.0 mm (set)
0042 Screws (set)
0043 Gasket A 21 x 30 x 2.0 mm
0044 Spring clips (set)
0045 Solder connections (set)
(cont.)
⅜
21 to 23 mm, M8, with EPDM insert
7
31 to 35 mm, M8, with EPDM insert
7
70/21 (external/internal)
7
54/18 (external/internal) (set)
7
secondary pump
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Parts lists, internal unit
83