Connecting The Cylinder Temperature Sensor; Connecting The Circulation Pump To P1 And P2; Floating Switching Contact Connection - Viessmann Vitodens 200-W B2HE Installation And Service Instructions Manual

Electrical connections

Connecting the cylinder temperature sensor

Connect the cylinder temperature sensor to terminals 3
and 4 on external plug C

Connecting the circulation pump to P1 and P2

Note
Observe the priority of the connections.
M
A
1~
B
Fig. 16
A Circulation pump
P1/P2 plug on HMU heat management unit
B
Possible connections to P1 and priority of connections:
1. Circulation pump for cylinder heating
2. If no circulation pump for cylinder heating is present:
Heating circuit pump for heating circuit without mixer
A1 in connection with low loss header and heating
circuits with mixer

Floating switching contact connection

Connection at plug
lH
One of the following functions can be connected:
■ External demand
■ External blocking
■ DHW circulation pump external demand (pushbutton
function, pump runs for 5 min). Cannot be connected
with Vitodens 222-W.
Room temperature controller (room thermostat)
■
For room temperature-dependent operating mode
A
1 L N
?
lH
Fig. 17
Floating contact
A
(cont.)
. See page 21.
Remove existing plugs from the sensor and fit the wire
ferrules.
Possible connections to P2 and priority of connections:
1. Heating circuit pump for heating circuit without mixer
A1 in connection with low loss header and heating
circuits with mixer
2. If no circulation pump for heating circuit without
mixer is present:
DHW circulation pump
Note
If a heating circuit pump for heating circuit without
mixer is installed, connect the DHW circulation
pump to the P1 extension (accessories).
Connect DHW circulation pumps with standalone
functions directly to the 230 V ∼ supply.
The function of connections P1 and P2 is selected in
the commissioning assistant by selecting the connec-
ted component.
Specification
Rated current
Rated voltage
Assigning functions in the commissioning assis-
tant
See commissioning assistant in "Commissioning".
Installation sequence
1 A
230 V ~
23