Electrical connections
16
Pumps
(accessory)
All circulation pumps can be
“hard-wired” to the terminal strip of
the Power Pump Module. Pre-wired
Viessmann circulation pumps can be
plugged into the respective Rast-5
terminals in the Power Pump Module.
Available pump connections
Boiler circuit pump
(heating circuit pumps for mixing
valve circuits 1 and 2 are
connected to the corresponding
actuator kit)
DHW production pump
DHW recirculation pump
For underfloor heating system only
An adjustable high limit must be
provided additionally. Install the fixed
high limit in the heating supply pipe
downstream
from the mixing valve and
the heating circuit pump.
See installation instructions for
the limit thermostat
120 VAC pumps
1.
Insert supplied strain relief through
Power Pump Module knock-out and
fasten with nut.
2.
Connect the Rast-5 connector to the
respective plug-in terminal on the
Power Pump Module.
5
3
0
3
2
6
9
v
1
.3
ONLY Viessmann pre-wired (plug-in)
circulating pumps must be used. If
pre-wired pumps are used do not
connect an additional pump to the
respective “hard-wired” terminals.
WARNING
Summary of Contents for Vitotronic 300 KW3
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