4.2 Continuous chimney fan operation
Fig. 7 shows how to connect a chimney fan to the MEC24 if continuous operation is needed:
y Connect the power supply to terminals 1, 2 and 3.
y Jump terminals 13 and 28.
y Jump terminals 12 and 29
y Jump terminals 30 and 32
y Connection to the appliance(s):
Connect the start signal from the burner to terminals 14 and 15.
y To connect the chimney fan:
If using a 1x120V chimney fan, connect it to terminals 4, 5 and 6. Refer to the fan’s Installation Manual.
If using a 3-phase fan and VFD, connect the VFD to terminals 20 and 21 as shown in Fig. 10 and 11.
DO NOT connect the fan directly to the MEC24 control.
y Connect the XTP transducer to terminals 22, 23 and 24.
XTP2
COM Vout Vin
Connection to 120 V Fan - Continuous Operation
1 x 120V AC
Fig. 7
9
3120066 MEC24 US 20210325
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