A275.3, example a
Boiler ON / OFF control for a direct heating circuit (1), a mixing circuit (2) and a DHW circuit (3). Optional DHW priority.
* = pressure relief valve
Heating circuit 2 can alternatively be a floor heating circuit.
At DHW heating P3 is switched ON and the desired boiler temperature lies a number of degrees above the desired DHW temperature.
P1 is switched OFF.Heating circuit 2 can be closed during DHW heating.
Special settings for type A275.3, example a:
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 can be closed during the DHW heating process:
MENU \ Settings \ Application: ‘DHW priority'
12052
***
*** Set 'OFF' when not to be closed, set 'ON' when to be closed
DHW circuit (circuit 3)
DHW heating is managed by pump P3:
MENU \ Settings \ Application: 'Ch.-o. valve / P'
13051
ON
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 | 25
Operating Guide ECL Comfort 210/296/310, application A275/A375
