Fitting The Top Panel And Front Panel (Closing The Heat Pump); Instructing The System User - Viessmann VITOCAL 350-G PRO Installation And Service Instructions Manual

Checking the electronic flow switch, type IFM
Flow switch operating displays
LED
Several LEDs illuminate green.
LED "9" flashes green.
LED "0" flashes green.
LED for switching point illuminates orange.
LED for switching point illuminates red.
All LEDs illuminate alternately red and green.
No LEDs illuminate.
Carry out an operating display adjustment (high flow balancing if necessary)
High flow balancing establishes the existing (higher)
flow rate as the nominal flow rate. For the correspond-
ing values for operating mode "water/water with inter-
mediate circuit", see "Specification".
Note
High flow balancing can shift the switching point of the
flow switch.

Fitting the top panel and front panel (closing the heat pump)

See page 53.

Instructing the system user

The system installer should hand the operating instruc-
tions to the system user and instruct the user in oper-
ating the system.
This includes all components installed as accessories,
e.g. remote control units. In addition, the system instal-
ler must make the user aware of the required mainte-
nance work.
Commissioning, inspection, maintenance
(cont.)
Meaning
Indication between no flow rate (no LED illuminates) and
maximum flow rate (all LEDs illuminate green).
The higher the flow rate, the more LEDs illuminate green.
Flow rate higher than nominal flow rate
If necessary, carry out an operating display adjustment (high
flow balancing, see below), for example if a circulation pump
had to be sized for higher flow rates.
Flow rate below minimum flow rate
Note
A fault is triggered at the heat pump control unit if the flow
rate falls below the switching point. Fault message; see serv-
ice instructions for "Vitotronic SPS, type 2.0".
Switching output closed; heat pump ready for operation
Switching output open; heat pump in a fault state (compres-
sor switches off. Fault message; see service instructions for
"Vitotronic SPS, type 2.0".).
Short circuit at the switching output
Note
The current operating mode is displayed once the short cir-
cuit has been remedied.
Operating voltage < 19 VDC or power supply failure.
1. Start the appliance with the existing flow rate.
2. Press and hold
flashes.
3. Release .
For further details of operation
Operating instructions for
"Vitotronic SPS, type 2.0"
for around 5 s until LED "9"
59