Installation & Servicing instructions ATAG iC-Range
38
a Hot water supply
The DHW program is always active after start-up.
This is indicated by .
If there is hot water request, this is indicated by a fl ashing and the hot water supply
will be activated. The circulation pump will start and the boiler will switch on .
Comfort and eco
By default the hot water supply is set to Comfort.
A change to Eco is possible by means of pressing the eco-button.
On the display appear 'eco'.
The eco-position will result in a possible longer DHW waiting time, because the boiler will
not being fi red up for pre-heating the hot water supply.
b CH system
The CH program is always active after start-up.
This is indicated by the .
If there is heat request, it is indicated by a fl ashing and the heating will be put into
operation .
The circulation pump will switch on and the boiler will switch on after 1 to 2 minutes.
When there is no more heat requested the radiator symbol may be solid or fl ashing, but the fl ame
symbol will disappear. The pump will continue to run due to the pump over run feature (overrun time
confi rmed in technical specifi cation table page 7).
c Pump function
By default the boiler is set in such a manner that the pump will switch on in case of a heat request for CH or
DHW. Switching on and off is managed entirely by the control system.
Danger of frost
If there is danger of frost damage to the CH installation and there is no outside sensor
connected, it is advisable to let the pump run continuously.
By pressing both - buttons at the same time for 8 seconds the pump can be switched on
continuously.
If the pump is set to continuously this is displayed by .
Installation frost protection
If an outside sensor is connected, then the controls will regulate the pump:
- In case of outside temperatures between +1.5 and -5°C the pump will run for 10 minutes every 6 hours.
- In case of outside temperatures below -5°C the pump will run in frost protection mode.
Boiler frost protection
If there is no outside sensor connected, and if the (T1) fl ow sensor registers a temperature of 5°C or below in
the boiler, the boiler will fi re up. The boiler keeps on fi ring until the temperature reaches 10°C (measured on
the fl ow sensor) and the boiler switches off again.
In this mode the symbol will fl ash.
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