Operating instructions

96
Service menu:
1. Press OK + å simultaneously for
approx. 4 s.
2. "Coding level 1"
3. "Electric heater"
4. Select parameter.
7900 Instantaneous heating water heater (accessory)
"Inst. heating water heater 7900"
If an instantaneous heating water heater
(accessory) is installed in the heating
water flow, it must be enabled. It can be
enabled either for DHW reheating only
and/or for heating mode.
Parameter Enabling the instantaneous heating water
heater for
heating mode DHW reheating
"Inst. heating water heater
7900"
"1" "1"
"Heating with electro 7902" "1" "0"
"DHW with e heating 6015" "0" "1"
!
Please note
Setting "0" in parameter "Inst.
heating water heater 7900"
switches the instantaneous heat-
ing water heater completely OFF,
so that it is also unavailable for
heating to provide frost protec-
tion.
For the instantaneous heating
water heater to be able to start in
case of a heat demand for frost
protection, set parameter "Heat-
ing with electro 7902" to "0" to
shut down, but set "Inst. heating
water heater 7900" to "1".
Delivered condition 0
Setting 0 / 1
Parameter group electric heater
Parameter group electric heater
5441 603 GB