Weil-McLain Eco Tec 2 Series Advanced Manual page 31

®
ECO Tec series 2 gas-fired water boiler – advanced manual
EXPRESS Setup — Typical Application D
5
Service
switch T1
Hot
1 1
Neutral
120VAC
2 2
Power
Ground
3 3
4
BK, W, G
T2
4 4
Zone Circulator
1
2.2A Max. 5 5
6 6
4
7 7
BK, W, G
Zone Circulator 2 8 8
2.2A Max.
9 9
3
G W B
Relay
NO contact
BK, W, G
T3
System
120V coil G
10 10
Circulator
11 11
4
12 12
BK, W, G
13 13
Zone Circulator
3
14 14
2.2A Max.
15 15
BK, W, G
Boiler circulator
Output 2.2A Max.
120 VAC Power for
boiler circulator
1
5
Service
switch T1
Hot
1 1
Neutral
120VAC
2 2
Power
Ground
3 3
T2
4 4
5 5
6 6
7 7
4
8 8
BK, W, G
9 9
Zone Circulator
4
2.2A Max.
4 4
BK, W, G
Zone Circulator
5
T3
2.2A Max.
10 10
11 11
12 12
13 13
14 14
15 15
BK, W, G
Boiler circulator
Output 2.2A Max.
120 VAC Power for
boiler circulator
1
Part number 550-100-272/1021
See Legend on page 18 for Item number identification.
Master Boiler – Field Wiring (Heating Only Model)
BK
W
J3 J3
G
BK
W
G
BK
Control
W
G
J4
W
G
J3 J3
BK
W
G
BK
G
ECO Tec-633-D
Shadow 2 Boiler – Field Wiring (Combi Model)
BK
W
J3 J3
G
BK
W
G
BK
Control
W
G
J4
W
G
J3 J3
BK
W
G
BK
G
To Shadow 2
B- Gnd
A+
6
J12
12
J21
From Master Boiler
B- Gnd
A+
6
J12
12
J21
(cont.)
8 8
7 7
6 6
5 5
4 4
N/C
J16 J16
C
3 3
R
2 2
W 70 Zone 3
1 1
70 70
9 9 C
R
8 8
W
7 7
6 6 C
5 5
R
Zone 2
70
4 4
70 70
W
C
3 3
J17 J17
2 2
R
70 Zone 1
1 1
70 70
W
9
System return
temp. sensor
Common
System supply
8
temp. sensor Common
Outdoor air temp.
sensor (if used)
11 Common
8 8
7 7
6 6
5 5
4 4
N/C
J16 J16
3 3 C
2 2
1 1
9 9 C
R
8 8
70 Zone 5
W
7 7
70 70
6 6 C
5 5
R Zone 4
70
4 4
70 70
W
C
3 3
J17 J17
2 2
1 1
9
*
System return
temp. sensor
Common
8
*
System supply
Common
temp. sensor
*
Outdoor air temp.
sensor (if used)
Common
11
* For redundancy only (not needed)
7
7
7
1 1
2 2
J19 J19
3 3
4 4
5 5
6 6
7
7
1 1
2 2
J19 J19
3 3
4 4
5 5
6 6
– 31 –