A275.3, example c
Boiler ON / OFF control for a direct heating circuit (1), a mixing circuit (2) and a DHW circuit (3). DHW priority.
* = pressure relief valve
Heating circuit 2 can alternatively be a floor heating circuit.
At DHW heating, P3 (changeover valve) is activated and the desired boiler temperature is a number of degrees above the desired DHW
temperature.
P1 is continuously switched ON.
Heating circuit 2 is closed during DHW heating.
Special settings for type A275.3, example c:
Navigation:
ID no.:
Recommended setting:
Heating circuit (circuit 1)
Circuit 1 must be able to receive a heat demand (desired flow temperature) from circuit 2:
MENU \ Settings \ Application: 'Demand offset'
11017
3 K**
** This value is added to the heat demand value from circuit 2
Heating circuit (circuit 2)
Circuit 2 must be able to send a heat demand (desired flow temperature) to circuit 1:
MENU \ Settings \ Application: 'Send desired T'
12500
ON
Circuit 2 must be closed during the DHW heating process:
MENU \ Settings \ Application: ‘DHW priority'
12052
ON
DHW circuit (circuit 3)
DHW heating is managed by changeover valve P3 / M1:
MENU \ Settings \ Application: 'Ch.-o. valve / P'
13051
OFF
The desired DHW heating temperature must influence the boiler temperature:
MENU \ Settings \ Application: ‘Tank, sec./prim.'
13053
OFF
VI.GU.L2.02
© Danfoss | 2017.09 | 27
Operating Guide ECL Comfort 210/296/310, application A275/A375
