Viessmann VITOCAL 300-G PRO Installation And Service Instructions Manual page 70

Installation sequence
Overview of electrical connections
Plug Sensor
aVG KM BUS
Connection of components on site (cores interchangea-
ble). If more than one of the following devices are to be
connected, use a KM BUS distributor (accessories).
■ Extension kit for one heating circuit with mixer (M3/
HC3)
■ Vitotrol 200A remote control (assign the heating cir-
cuits at the remote control)
■ External extension H1
■ Vitocom 100 communications interface
■ Vitosolic 100/200 solar control units
X24 Connection of the LON communication module (plug in
on site, see LON communication module installation in-
structions)
X31 Coding card slot
Swimming pool heating
Note
■ Swimming pool heating is activated via
external extension H1 with KM BUS.
■ Connections to external extension H1
only in accordance with the separate
"connection and wiring diagram"
sheet 180, sheet 181, sheet 182.
■ Connect only the circulation pump for
swimming pool heating to plug gÖ of
external extension H1. A filter circuit
pump must be connected separately.
■ If the components for swimming pool
water heating are connected to exter-
nal extension H1, no other external
function (e.g. changeover of operating
mode) can be connected.
Cascade control via KM BUS
Connections to external extension H1
only in accordance with the separate
"connection and wiring diagram"
sheet 210.
70
(cont.)
Type