ELECTRICAL WIRING DIAGRAM
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| 470k OHMS |
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| SEE |
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| TERMINAL | NOTE | TSTAT |
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| BLOCK | 1µF | BELOW |
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| NC |
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| HI LIMIT |
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FAN |
| TSTAT |
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| NO |
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| COOL DN | CONTACTOR | HEATING 1 2 3 4 | 5 |
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| ELEMENTS |
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POWER ON/OFF (“I/O”)
SWITCH
6 7 8 9 10 11 12
TIMER BOARD
| AC |
| IN |
TRANSFORMER |
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230Vp : 24Vs | 0.5A |
| FUSE |
R3 R2 R1 12V+ |
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- | - | - |
RELAY 1 | RELAY 2 | RELAY 3 |
+ | + | + |
Wiring Diagram Notes:
•Capacitor and resistor inside dashed box are used ONLY on European MBT240
•Heating elements are numbered
•Relay 1 powers elements 1, 4, 7, and 10
•Relay 2 controls elements 2, 5, 8, and 11
•Relay 3 controls elements 3, 6, 9, and 12
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