46
Controller and sensor PCB
193C
aVG
F23
F0
sVA
X31
X25
X15
X24
X18
F26
F20
F21
F14
F16
F12
F13
F7
F8
F6
F4
F27
F11
193A
193B
20
1
J3
J4
X2
X3
X20
Fig.35
F..
Connections for temperature sensors: See the
following table.
J3
Jumper for terminator Modbus 2
Terminator enabled
Terminator disabled
J4
Jumper for setting master/slave, Modbus 2
Heat pump control unit is slave.
Heat pump control unit is master.
X2
Connection for main PCB power supply
X3
Connection of connecting lead to the main
PCB
X15
Internal connection, KM-BUS
X18
Connection for Modbus 1: Viessmann applian-
ces
If other Viessmann appliances are to be con-
nected, plug in the Modbus distributor (acces-
sory).
X20
Programming unit connection
X24
Slot for LON communication module
X25
/ :
Terminals for internal sensors and components
:
Connections for connecting cable (LV) to the
heat pump control panel or wiring chamber
X31
Slot for coding card
aVG
KM BUS
a:D
A
Connection, PWM signal, primary pump
a:D
B
Connection, PWM signal, secondary pump
a:D
C
Connection, PWM signal, cylinder primary
pump
sVA
Terminal Modbus 2
■
Set the required parameters during commissioning;
see from page 57.
■
Connections, see separate "Connection and wiring
diagram" sheet 40 to sheet 192.
Note
■
Plug F11:
Nothing
should be connected to plug F11
on site.
■
Flow temperature sensor for heating circuit with
mixer (M3):
The flow temperature sensor for one
heating circuit with mixer (M3/HC3) is connected to
the mixer extension kit (accessories).
Installation sequence
Overview of electrical connections
(cont.)
5549 984 GB
Installation
Summary of Contents for KWT BW 301.B090
Page 99: ...99 5549 984 GB...
