55
Terminals
Function
Explanation
X3.8
X3.9
Frost stat and/or contact
humidistat
or
Jumper
Requires zero volt
N/C
contact:
■ Closed: Continuous safety chain
■ Open: Safety chain interrupted; heat
pump shut down
■ Breaking capacity 230 V~, 0.15 A
■ Remove jumper when making this con-
nection.
■ Connected in series if both safety com-
ponents are installed.
X3.18
X2.1
X1.1
Heat pump control unit
supply 230 V~
See chapter "Power supply".
Internal unit: Controller and sensor PCB (sensors)
Set the required parameters during com-
missioning; see from page 83.
Plug
Sensor
Type
F0.1/F0.2
Outside temperature sensor
NTC 10 kΩ
F0.2/F0.3
Radio clock receiver
DCF
F4
Buffer temperature sensor, top
NTC 10 kΩ
F11
Contact humidistat 24 V–
Note
If a 230 V~ contact humidistat (connection at X3.8/X3.9)
is used for cooling, insert a jumper, otherwise the heat
pump will not start (message "CA Protectn device prim-
ry").
―
F13
System flow temperature sensor (downstream of heating
water buffer cylinder)
NTC 10 kΩ
F14
Flow temperature sensor, cooling circuit (heating circuit
without mixer A1/HC1 or separate cooling circuit SKK)
NTC 10 kΩ
F16
Room temperature sensor for separate cooling circuit
SKK (required) or for heating/cooling circuit without mixer
A1/HC1 (recommended)
NTC 10 kΩ
F21
Collector temperature sensor
NTC 20 kΩ
F23
Return temperature sensor, solar circuit
NTC 10 kΩ
Installation sequence
Electrical connection
(cont.)
5623 661 GB
Installation
Содержание Vitocal 242-S
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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 ...