Appendix
0020261188_00 ecoTEC plus Installation and maintenance instructions
51
E.3
Key for the basic system diagrams
Component
Meaning
1
Heat generator
3
Heat generator circulation pump
3c
Cylinder charging pump
3e
Circulation pump
3f
Heating pump
5
Monovalent domestic hot water cylinder
8a
Expansion relief valve
8b
Potable water expansion relief valve
8c
Safety group
–
drinking water connection
8e
Heating diaphragm expansion vessel
8f
Diaphragm expansion vessel
–
potable water
9a
Single-room temperature control valve (thermostatic/motorised)
9c
Flow regulator valve
9e
Domestic hot water generation prioritising diverter valve
9h
Filling/draining cock
9j
Tamper-proof capped valve
9k
3-port mixing valve
10c
Non-return valve
10e
Line strainer with magnetite separator
10h
Low loss header
12
System control
12a
Remote control unit
12d
Expansion/wiring centre
12k
Limit thermostat
12m
Outdoor temperature sensor
DHW
Cylinder temperature sensor
FS2
Heating circuit volume temperature sensor
SysFlow
System temperature sensor
Components that have been used multiple times (x) are numbered consecutively (x1, x2, ..., xn).
F
Inspection and maintenance work
–
Overview
The table below lists the manufacturer requirements with respect to minimum inspection and maintenance intervals. If na-
tional regulations and directives require shorter inspection and maintenance intervals, you should observe these instead of
the required intervals listed in the table. Carry out the preparatory work each time before inspection/maintenance work is car-
ried out, and carry out the completion work each time after the inspection/maintenance work is carried out.
#
Maintenance work
Interval
1
Checking leak-tightness
Each time maintenance work is
carried out
25
2
Check the general condition of the product
Annually
3
Remove any dirt from the product and vacuum chamber
Annually
4
Inspect the heat cell (condition, corrosion, soot, damage) and, if required,
carry out maintenance work.
Annually
5
Checking the gas flow pressure
Annually
23
6
Checking the CO
₂
content and, if necessary, adjusting it (air ratio setting)
Annually
24
7
Check that the connections/electrical plug connections have been con-
nected correctly/function correctly
Annually
8
Check that the gas stopcock and service valves function correctly
Annually
9
Checking and treating the heating water/filling and supplementary water
Annually
19
10
Cleaning the condensate siphon
Annually
36