97
?
Secondary circuit flow tempera-
ture sensor (alternative posi-
tions)
%
A
Return temperature sensor,
solar circuit
aJ
Secondary circuit, return tem-
perature sensor
sG
Secondary pump
lJ
3-way diverter valve for "Central
heating/DHW heating"
a:D
B
PWM signal, secondary pump
a:D
C
PWM signal for cylinder primary
pump
A
Cylinder temperature sensor
B
Non-return valve
C
Cylinder drain & fill valve (see
following chapter)
D
Instantaneous heating water
heater with high limit safety cut-
out
E
Secondary circuit drain & fill
valve
F
Internal unit service valve
(Schrader valve; can be used in
place of the external unit service
valve for checking pressure and
evacuating the refrigerant cir-
cuit; see page 72)
G
Liquid gas temperature sensor
(IRT)
H
Secondary circuit temperature
sensor upstream of the instan-
taneous heating water heater
(LWT)
K
Secondary circuit air vent valve
L
Pressure sensor (ICT) for deter-
mining condensation tempera-
ture in condenser
Troubleshooting
Repairs
(cont.)
5623 661 GB
Service
Содержание Vitocal 242-S
Страница 26: ...26 6 8 P301 P501 P303 P302 X25 F23 F6 7 Installation sequence Installing the internal unit cont 5623 661 GB ...
Страница 27: ...27 SLP N 9 11 aCH sG lJ 10 Installation sequence Installing the internal unit cont 5623 661 GB Installation ...
Страница 28: ...28 X20 2x 16 17 2x 12 14 18 13 15 Installation sequence Installing the internal unit cont 5623 661 GB ...
Страница 29: ...29 2x 4x 4x 6x 21 19 20 22 Installation sequence Installing the internal unit cont 5623 661 GB Installation ...
Страница 32: ...32 Installation sequence Installing the internal unit cont 5623 661 GB ...
Страница 95: ...95 Removing cover from programming unit if necessary 5 4 4x Troubleshooting Repairs cont 5623 661 GB Service ...
Страница 110: ...110 0003 0006 0005 0008 0007 0001 0009 0010 0002 0004 Parts lists internal unit Internal unit casing cont 5623 661 GB ...