Installation Guide
ECL Comfort 210 / 296 / 310, A275 / A375
(code no. 087H3814)
A275.1 (ex. a):
S1
P
P
P
P
ECL 210 / 296 / 310
A1
S3
P1
S5
B1
*
P
P
Danfoss
87H2163.13
S7
1
© Danfoss | 2020.11
AN15668645814800-000602 | 1
Installation Guide, ECL Comfort 210 / 296 / 310, A275 / A375
A275.1 (ex. b):
A275.2 (ex. a):
S1
S1
B1
S3
S5
ECL 210 / 296 / 310
P1
*
ECL 210 / 296 / 310
A1
A1
S7
Danfoss
87H2164.12
1
Danfoss
87H2165.12
B1
S3
S5
P1
P3
S7
1
*
S6
2
2 | © Danfoss | 2020.11
AN15668645814800-000602
Installation Guide, ECL Comfort 210 / 296 / 310, A275 / A375
A275.2 (ex. b):
S1
B1
S3
S5
P1
P3/M1
ECL 210 / 296 / 310
*
A1
S6
S7
Danfoss
87H2166.12
1
2
A275.2 (ex. c):
S1
ECL 210 / 296 / 310
Danfoss
A1
87H2167.12
S3
S7
P1
1
*
S5
B1
S6
2
P3
AN15668645814800-000602
© Danfoss | 2020.11 | 3
Installation Guide, ECL Comfort 210 / 296 / 310, A275 / A375
A275.2 (ex. d):
A275.3 (ex. a):
S1
S3
S5
B1
S1
ECL 210 / 296 / 310
P1
P3/M1
ECL 210 / 296 / 310
Danfoss
A1
*
S6
87H2168.12
S7
1
2
Danfoss
87H2169.13
M2
S4
P4
S8
2
S2
S3
S7
P1
S5
*
1
B1
S6
3
P3
4 | © Danfoss | 2020.11
AN15668645814800-000602
Installation Guide, ECL Comfort 210 / 296 / 310, A275 / A375
A275.3 (ex. b):
S1
ECL 210 / 296 / 310
Danfoss
87H2170.13
M2
S4
P4
S8
2
S2
S3
S7
1
S5
P1
*
B1
P3/M1
S6
3
A275.3 (ex. c):
S1
S3
P1
S5
B1
P3/M1
ECL 210 / 296 / 310
M2
S4
S2
Danfoss
87H2171.13
S8
P4
*
S6
2
S7
1
3
AN15668645814800-000602
© Danfoss | 2020.11 | 5
87H2172.13
87H2173.13
87H2174.13
Installation Guide, ECL Comfort 210 / 296 / 310, A275 / A375
A275.3 (ex. d):
S1
ECL 210 / 296 / 310
Danfoss
A275.3 (ex. e):
S4
M2
S3
S5
B1
S1
S3
S5
B1
S2
P1
P3
ECL 210 / 296 / 310
M2
S4
S2
P1
P4
*
P4
*
S8
2
S7
1
S6
3
Danfoss
S8
2
S7
1
A275.3 (ex. f):
S6
3
P3
ECL 210 / 296 / 310
M2
S4
S2
P3
Danfoss
S8
P4
S6
2
3
S1
S3
S5
B1
6 | © Danfoss | 2020.11
AN15668645814800-000602
ECL 210 / 296 / 310
S1
B1
ECL 310
S1
①
B1
Danfoss
87H2178.10
P1
S7
*
ECL 310
A1
S1
①
S3
S5
B1
B2
87H2179.10
ECL 310
S1
①
Installation Guide, ECL Comfort 210 / 296 / 310, A275 / A375
A275.3 (ex. g):
M2
S4
S2
P1
P1
A375.1 (ex. a):
S3
S5
S3
B2
S5
Danfoss
87H2175.13
S8
P4
*
A1
*
2
S7
1
Danfoss
87H2176.10
S7
A375.1 (ex. b):
A375.1 (ex. c):
A1
S3
P1
B2
S5
B1
*
Danfoss
S7
A375.1 (ex. d):
S1
S3
B1 B2
S5
ECL 310
A1
P1
*
Danfoss
87H2177.10
S7
①
AN15668645814800-000602
© Danfoss | 2020.11 | 7
87H2180.10
ECL 310
①
87H2181.10
ECL 310
S1
①
87H2182.10
S1
①
ECL 310
87H2186.10
S1
①
ECL 310
S1
①
ECL 310
Installation Guide, ECL Comfort 210 / 296 / 310, A275 / A375
A375.1 (ex. e):
A375. 1 (ex. f):
A375. 1 (ex. g):
S1
B2
B1
B1 B4
S3
B4
B3
S5
S3
S5
A1
P1
*
A1
P1
*
Danfoss
S7
Danfoss
S7
A375. 1 (ex. h):
A375. 1 (ex. i):
B1 B8
B1
B2
S3
S5
B8
+ ECA 32
+ ECA 32
S3
S5
+ ECA 32
S3
A1
P1
*
A1
P1
*
A1
Danfoss
S7
Danfoss
S7
Danfoss
87H2187.10
8 | © Danfoss | 2020.11
B1
B2 B3
S7
B8
S5
P1
*
AN15668645814800-000602
S1
ECL 310
87H2189.10
S1
ECL 310
ECL 310
V1
Installation Guide, ECL Comfort 210 / 296 / 310, A275 / A375
A375.2 (ex. a):
S3
B1 B8
S5
+ ECA 32
Danfoss
A1
P1
*
87H2188.10
S7
①
A375.3 (ex. a):
B1 B8
S6
②
P4
P3
+ ECA 32
S3
S5
A1
M2
S4
P4
S2
P1
*
S6
Danfoss
S8
②
S7
①
③
P3
A375.4, ex. a:
S1
Danfoss
+ ECA 32
A1
S3
S9
P1
S5
*
B1
AN15668645814800-000602
87H1544.10
S7
1
© Danfoss | 2020.11 | 9
Installation Guide, ECL Comfort 210 / 296 / 310, A275 / A375
A375.5, ex. a:
ECL Comfort 210 / 310:
230 V a.c.
S1
S3
S9
S5
B1
V1
ECL 310
Danfoss
+ ECA 32
M2
S4
S2
P1
P3
A1
P4
*
S6
P5
87H1545.10
S8
2
S7
1
3
4 (2) A / 230 V a.c.
ECL 210, 230 V a.c.:
A275.1
A275.2
A275.3
0,2 A / 230 V a.c.
3-point
M1 M2
ü
ü ü
10 | © Danfoss | 2020.11
AN15668645814800-000602
Installation Guide, ECL Comfort 210 / 296 / 310, A275 / A375
ECL 210, 230 V a.c.:
P1 B1 P3 P4
A275.1
A275.2
A275.3
ECL 310, 230 V a.c.:
A275.1
A275.2
A275.3
A375.1
A375.2
A375.3
A375.4
A375.5
ü ü
ü ü ü
ü ü ü ü
3-point 0-10 V: (ECA 32)
M1 M2 M3 V1
ü
ü ü
ü
ü ü
ü ü ü
ü ü
ECL 310, 230 V a.c.:
A275.1
A275.2
A275.3
A375.1
A375.2
A375.3
A375.4
A375.5
230 V a.c. - A275.1/A275.2:
P1 B1 P3 P4 P5
ü ü
ü ü ü
ü ü ü ü
ü ü
ü ü ü ü
ü ü ü ü
ü ü
ü ü ü ü ü
AN15668645814800-000602
© Danfoss | 2020.11 | 11
Installation Guide, ECL Comfort 210 / 296 / 310, A275 / A375
P3/M1 (A275.2):
A275.3:
P3 / M1 (A275.3):
12 | © Danfoss | 2020.11
AN15668645814800-000602
Installation Guide, ECL Comfort 210 / 296 / 310, A275 / A375
A375.1 (B1 ... B4):
A375.1 (B5 ... B8):
A375.2 / A375.3 (B1 ... B2):
AN15668645814800-000602
© Danfoss | 2020.11 | 13
Installation Guide, ECL Comfort 210 / 296 / 310, A275 / A375
P3 / M1:
A375.2 / A375.3 (B3 ... B6):
A375.2 / A375.3 (B7 ... B8):
14 | © Danfoss | 2020.11
AN15668645814800-000602
Installation Guide, ECL Comfort 210 / 296 / 310, A275 / A375
A375.4 / A375.5:
A375.4 / A375.5, Solid State relays:
A375.4 / A375.5, ECA 32:
AN15668645814800-000602
© Danfoss | 2020.11 | 15
Installation Guide, ECL Comfort 210 / 296 / 310, A275 / A375
ECL Comfort 210 / 310:
24 V a.c.
ECL 310, 24 V a.c.:
3-point 0-10 V: (ECA 32)
M1 M2 M3 V1
A275.1
A275.2
A275.3
A375.1
A375.2
A375.3
A375.4
A375.5
ü
ü ü
ü
ü ü
ü ü ü
4 (2) A / 24 V a.c.
1 A / 24 V a.c.
ü ü
ECL 310, 24 V a.c.:
A275.1
A275.2
A275.3
A375.1
A375.2
A375.3
A375.4
A375.5
P1 B1 P3 P4 P5
ü ü
ü ü ü
ü ü ü ü
ü ü
ü ü ü ü
ü ü ü ü
ü ü
ü ü ü ü ü
16 | © Danfoss | 2020.11
AN15668645814800-000602
Installation Guide, ECL Comfort 210 / 296 / 310, A275 / A375
24 V a.c. - A275.1 / A275.2:
P3 / M1 - A275.2 / A275.3:
A275.3:
AN15668645814800-000602
© Danfoss | 2020.11 | 17
Installation Guide, ECL Comfort 210 / 296 / 310, A275 / A375
A375.1 (B1 ... B4):
A375.1 (B5 ... B8):
18 | © Danfoss | 2020.11
AN15668645814800-000602
Installation Guide, ECL Comfort 210 / 296 / 310, A275 / A375
A375.2 / A375.3 (B1 ... B2):
P3 / M1:
A375.2 / A375.3 (B3 ... B6):
AN15668645814800-000602
© Danfoss | 2020.11 | 19
Installation Guide, ECL Comfort 210 / 296 / 310, A275 / A375
A375.2 / A375.3 (B7 ... B8):
A375.4 / A375.5:
A375.4 / A375.5, Solid State relays:
20 | © Danfoss | 2020.11
AN15668645814800-000602
87H2105.10
87H2107.10
87H2106.10
ECL 210 / 310
Installation Guide, ECL Comfort 210 / 296 / 310, A275 / A375
230 V a.c. / 24 V a.c. safety thermostat
1-step closing
ECL 210 / 310
M1
ECL 210 / 310
M1
Danfoss
Danfoss
ECL 210 / 310
Danfoss
M2
Danfoss
87H2108.10
M2
AN15668645814800-000602
© Danfoss | 2020.11 | 21
ECL 210 / 310
ECL 210 / 310
Installation Guide, ECL Comfort 210 / 296 / 310, A275 / A375
2-step closing
M1
M2
Pt 1000 (1000 Ω / 0 °C)
Danfoss
87H2109.10
Danfoss
87H2110.10
230 V a.c.
87H1487.11
Danfoss
ECL Comfort 210 / 296 / 310
28
29
30
31
32
S2 S1
L
N
PE
S2
S1
+
B
ECL 485
S2 S1
L
230 V a.c.
N
PE
ECL Comfort 210 / 296 / 310
28
29
30
31
32
S2
S1
+
B
ECL 485
22 | © Danfoss | 2020.11
AN15668645814800-000602
Installation Guide, ECL Comfort 210 / 296 / 310, A275 / A375
S9
V d.c. = 12 - 24 Volt d.c.
S9
AN15668645814800-000602
V d.c. = 12 - 24 Volt d.c.
© Danfoss | 2020.11 | 23
Installation Guide, ECL Comfort 210 / 296 / 310, A275 / A375
A375 (0-10 V)
ECL 310
ECA 30 / 31
Danfoss
87H2059.10
ECA 30 / 31
24 | © Danfoss | 2020.11
AN15668645814800-000602
38
Installation Guide, ECL Comfort 210 / 296 / 310, A275 / A375
Master / slave
B
A
B
A
Modbus
ECL 210 / 296 / 310
Danfoss
87H2052.11
B
A
B
A
Danfoss
87H2060.11
B
A
B
A
M-bus
M-bus
ECL 296 / 310
METERMETER
Danfoss
87H2061.11
B
A
B
A
ECL 296 / 310
+
B
A
B
A
S.Gnd
S1
87H1308.11
Danfoss
M-bus
29
30
31
32
33
34
35
36
37
AN15668645814800-000602
© Danfoss | 2020.11 | 25
Ω
°C
Installation Guide, ECL Comfort 210 / 296 / 310, A275 / A375
Pt 1000 (IEC 751B, 1000 Ω / 0 °C)
-50
-40
-30
-20
-10
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
803
843
1600
1500
Ω
882
922
1400
961
1000
0
1039
1300
1078
1117
1200
1155
1194
1232
1271
1309
1100
1000
1347
1385
1423
1461
1498
900
800
1535
1573
-50
-25 0255075 100 125 150
°C
120
2.2 2.6 3.0 3.41.8
110
1.4
100
90
1.0
80
70
0.6
60
50
40
0.2
30
20
10
-30 -20 -10 0 10 20
26 | © Danfoss | 2020.11
AN15668645814800-000602
Installation Guide, ECL Comfort 210 / 296 / 310, A275 / A375
ECA 30
AN15668645814800-000602
© Danfoss | 2020.11 | 27
Installation Guide, ECL Comfort 210 / 296 / 310, A275 / A375
?
?
-> Playlists -> How-to Videos -> District Energy installation videos
28 | © Danfoss | DHS-SMDT/DK | 2020.11
ECL Comfort 210 / 296 / 310, A275 / A375: www.heating.danfoss.com
https://www.youtube.com/user/DanfossHeating
*087H9097*
AN15668645814800-000602
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