Checking The Electronic Flow Switch, Type Ifm - Viessmann VITOCAL 350-G PRO Installation And Service Instructions Manual

Commissioning, inspection, maintenance
Commissioning the system
Note
The type and extent of parameters depend on the heat
pump type and the system configuration.
Observe the instructions in the separate service
instructions for the Vitotronic SPS heat pump control
unit, type 2.0, otherwise the appliance warranty will be
void.
Configuration procedure
Service instructions for "Vitotronic SPS, type
2.0"

Checking the electronic flow switch, type IFM

Fig. 38
58
(cont.)
Note
Commissioning must only be carried out by trained
and authorised contractors.
The flow switch monitors the minimum flow rate
required for operating the heat pump.
1. Check the tip of the sensor regularly for deposits.
2. Clean the tip of the sensor with a cloth if neces-
sary.
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 appears.