Figure 129
Controls and electrical components —
ECO 70/110/155
(see Figure 130, page 125 for illustration)
Replacement parts
(continued)
Go to www.weil-mclain.com to locate Weil-McLain distributors
Part number 550-142-190/1218
124
Item Name
Description / contents
Part Number
100
Flue temperature sensor & grommet
One sensor & grommet
383-500-600
110
Outdoor temperature sensor
One sensor
510-312-218
120
Transformer 120V/24V
50 VA transformer
383-500-628
130
Display board assembly
Includes circuit board and plastic housing
381-330-030
140
Control module assembly
Control module and housing
381-330-029
150
Wire harness — line voltage (not shown)
Wire harness (ECO 70)
591-392-001
Wire harness (ECO 110)
591-392-031
Wire harness (ECO 155)
591-392-003
160
Wire harness — low voltage (not shown)
Wire harness (ECO 70 )
591-392-000
Wire harness (ECO 110)
591-392-030
Wire harness (ECO 155)
591-392-002
170
Wire harness — display (not shown)
Connects display to control
591-392-004
180
Ignition cable (not shown)
Ignition cable
591-391-997
190
F1 - 3 amp, fast blow ato (5 fuses)
(not shown here — see Figure 103, page 96)
5 Fuses
383-500-603
200
F2 - 12 amp, fast-blow ag (5 fuses)
(not shown here — see Figure 103, page 96)
5 Fuses
383-500-604
210
Jumper for low voltage terminal blocks (not shown)
5 jumpers
383-500-641
220
Connector electrical control (not shown)
Includes all 6 connectors
383-800-229
230
Low voltage sealing grommet (not shown)
Seals thermostat wire at entrance to cabinet
562-248-771
NOTE: Item's 130 & 140 (P/N 381-330-030 and 381-330-029) are ECO Series 2 components and must be used together.
Mixing Series 1 and Series 2 Control module and Display board will NOT work.
ECO Series 2 Control module and Display may be used on a Series 1 boiler, if both Control and Display are changed out
at the same time. For ECO 110 model, see Notice on page 71.
®
S
ERIES
2
G
AS
-
FIRED
WATER
BOILER
—
Boiler Manual
