Control Settings, Electric Heater Instantaneous Heating Water Heater (Accessory) - Viessmann VITOCAL 300-A Installation And Service Instructions Manual

Control settings, electric heater
Instantaneous heating water heater (accessory)
If an electric booster heater (instanta-
neous heating water heater, acces-
sory) is installed in the heating water
flow.
!
Please note
If this parameter is used to
block the electric booster hea-
ter, there is no frost protection.
To block the electric booster
heater, use "Heating with
electro" (7902) or "DHW with
e heating" (6015, page 151).
Electric heating
Heating operation with the instanta-
neous heating water heater (acces-
sory).
Max. stage electric booster heater
Setting the max. output (stage 1, 2 or
3) of the electric booster heater
(instantaneous heating water heater,
accessory) for DHW and heating
water booster heating.
The available electrical output is sub-
ject to the electrical connection of the
instantaneous heating water heater
(accessory).
Press the following keys:
1. "Device settings".
2. "Programming".
152
Press the following keys:
1. "Device settings".
2. "Programming".
3. "Electric heater".
4. y/x for "Inst.htg.water
heat" (7900).
5. "YES" to enable.
6. "BACK" to confirm.
"Heating with electro" (7902)
Operating instructions
3. "Electric heater".
4. y/x for "Max. e heating
stage" (7907).
5. l/m for the selected value:
"1" max 3 kW
"2" max 6 kW
"3" max 9 kW (deliv-
ered condition)
6. "BACK" to confirm