2.5.4 Electrical connections, 24 V a.c. (ECL 310 only), power supply, pumps, motorized valves etc.
Application A275.1 / A275.2
Double-insulated (two-chamber) transformer
Terminal
Description
Max. load
16
15
Alarm (A1)
4 (2) A / 24 V a.c.*
14
Phase for control of pumps and burner
13
K3
Control of DHW heating pump ON / OFF, circuit 2 (A275.2 only)
4 (2) A / 24 V a.c.*
12
B1
Burner ON / OFF
4 (2) A / 24 V a.c.*
11
K1
Control of circulation pump ON / OFF, circuit 1
4 (2) A / 24 V a.c.*
10
Supply voltage 24 V a.c. - (SN)
9
Supply voltage 24 V a.c. - (SP)
8
M1
Phase for motorized changeover valve output, circuit 2 (A275.2 only)
7
M1
Motorized changeover valve, DHW circuit direction (A275.2 only)
1 A / 24 V a.c.
6
M1
Motorized changeover valve, heating circuit direction, (A275.2 only)
1 A / 24 V a.c.
* Relay contacts: 4 A for ohmic load, 2 A for inductive load
Factory established jumpers:
5 to 8, 9 to 14 , L to 5 and L to 9, N to 10
VI.GU.L2.02
© Danfoss | 2017.09 | 61
Operating Guide ECL Comfort 210/296/310, application A275/A375