ECL Comfort 210/310, A275/A375 Installation Guide - Danfoss ...

Installation Guide ECL Comfort 210 / 310, application A275 / A375
A275.3, example b
Boiler ON / OFF control for a direct heating circuit (1), a mixing circuit (2) and a DHW circuit (3). Partly DHW priority.
* = pressure relief valve
S1
B1
S3
S5
P1
P3/M1
M2
ECL 210 / (310)
S4
S2
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 can be closed during DHW heating.
Special settings for type A275.3, example b:
P4
*
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 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
26 DEN-SMT/DK VI.GU.L1.02 Danfoss District Energy
S6
S8
S7
②
①
③
Danfoss
87H2170.10