Checking The Electronic Flow Switch, Type Ifm - Viessmann Vitocal 300-G Pro Installation And Service Instructions For Contractors

Commissioning the system
Parameters for heat pump cascade
"Use of heat pump in cascade 700C"
"Enable electric heaters for DHW heating 7901"
"Enable 3-way diverter valve heating/DHW 730D"
Note
The additional parameters for the heat pump cascade
are set during commissioning by a heat pump contrac-
tor certified by Viessmann.

Checking the electronic flow switch, type IFM

Fig. 35
Commissioning, inspection, maintenance
(cont.)
Setting
Lead heat pump
"0" to "15"
Note
The electronic flow switch is only used in the operating
mode "water/water with intermediate circuit".
The flow switch monitors the minimum flow rate
required for operating the heat pump.
1. Check the tip of the sensor regularly for possible
deposits.
2. Clean the tip of the sensor with a cloth, if required.
Remove stubborn deposits (such as limescale)
with commercially available vinegar-based clean-
ers.
3. Switch on the power supply.
LEDs "0" to "9" illuminate green in sequence and
then extinguish again.
The operating display then follows.
Lag heat pump
"0" to "15"
"0" or "1"
—
"0"/"1" "0"/"1"
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