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1
1
C
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2
2
M-Z
1
6
2
9
8
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Ma
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Bu
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W
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Mo
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WIRING DIAGRAM: Electronically Control Units
29
27.5
V
240
208
23.8
WATTS
MODEL
MOD400E
WATER FILL
VALVE
1&
LOW WATER CONTROL
3
6 12
1
2
3
19
2
5
1
4
S1
HEATING ELEMENT
TEMP CONTROL
(BACK VIEW)
SENSOR
PROBE
INPUT
RELAY
4
5
HEATING ELEMENT
TEMP CONTROL
(BACK VIEW)
SENSOR
PROBE
INPUT
RELAY
7
8
HEATING ELEMENT
TEMP CONTROL
(BACK VIEW)
SENSOR
PROBE
INPUT
RELAY
10
11
HEATING ELEMENT
TEMP CONTROL
(BACK VIEW)
SENSOR
PROBE
INPUT
RELAY
6
12
9
L1
L2
L3
IN
PU
T
NO
COMMON MAX
NC
CO
M
34
35
36
37
38
WATER PAN
GRN
PROBE
L1=
L3=
L2=
101
102
101
4
9 10
1
7 102
6
9
L1
L2
L3
L1=
L2=
4
7
3 12 101
1 10 102
COM
PROBE
1
2
3
4
19
37
34
35
36
38
2M-Z14567rev~
SINGLE PHASE
POWER INPUT
ALTERNATE WATER
LEVEL CONTROL
NOTES: WIRING DIAGRAM MOD400E
1) TEMPERATURE AND WATER LEVEL SENSOR WIRES ROUTE SEPARATELY IN SMALLER CONDUIT.
2) GROUND TO EARTH USING SUPPLIED STUD IN CONTROL BOX.
3) OPTIONAL WATER LEVEL CONTROL: WIRES 19 & 35 SHOULD BE CAPPED IF NOT USED.
6600
4960
3&
17.8
14.5
11.3
9.8
17.8
14.5
50/60 Hz
21
22
34.4
V
240
208
29.8
WATTS
MODEL
MOD500E
WATER FILL
VALVE
1&
LOW WATER CONTROL
6
9 15
1
2
3
19
2
5
1
4
S1
HEATING ELEMENT
TEMP CONTROL
(BACK VIEW)
SENSOR
PROBE
INPUT
RELAY
4
5
HEATING ELEMENT
TEMP CONTROL
(BACK VIEW)
SENSOR
PROBE
INPUT
RELAY
7
8
HEATING ELEMENT
TEMP CONTROL
(BACK VIEW)
SENSOR
PROBE
INPUT
RELAY
10
11
HEATING ELEMENT
TEMP CONTROL
(BACK VIEW)
SENSOR
PROBE
INPUT
RELAY
13
14
HEATING ELEMENT
TEMP CONTROL
(BACK VIEW)
SENSOR
PROBE
INPUT
RELAY
6
12
15
9
L1
L2
L3
IN
PU
T
NO
COMMON MAX
NC
CO
M
34
35
36
37
38
WATER PAN
GRN
PROBE
L1=
L3=
L2=
101
102
101
3
7 10
1
4 12 102
13
6
9 15
L1
L2
L3
L1=
L2=
4
7 13
3 12 101
1 10 102
COM
PROBE
1
2
3
4
19
37
34
35
36
38
2M-Z14523rev~
SINGLE PHASE
POWER INPUT
ALTERNATE WATER
LEVEL CONTROL
NOTES: WIRING DIAGRAM MOD500E
1) TEMPERATURE AND WATER LEVEL SENSOR WIRES ROUTE
SEPARATELY IN SMALLER CONDUIT.
2) GROUND TO EARTH USING SUPPLIED STUD IN CONTROL BOX.
3) OPTIONAL WATER LEVEL CONTROL: WIRES 19 & 35 SHOULD BE
CAPPED IF NOT USED.
8250
6196
3&
16.9
14.6
16.9
14.6
22.1
19.5
50/60 Hz
21
22
M400E & M427E Series
M500E & M527E Series