4.2 Relay board connections
If the optional Relay Board is used, the control can handle up to 10 appliances.
Connect the multi plug from the add-on board to the main board as show below in Fig. 10.
Fig. 10
Connect the terminals as needed. The terminal layout is shown in Fig. 11:
53 54 57 58 61 62 65 66
51 52 55 56 59 60 63 64
AUX7
RELAY
AUX8
RELAY
AUX9
RELAY
AUX10
RELAY
AUX7
INPUT
AUX8
INPUT
AUX9
INPUT
AUX10
INPUT
+/~ -/~ +/~ -/~ +/~ -/~ +/~ -/~
Fig. 11
Terminal Use
51, 52 AUX7 Dry Contact (Normally Open) Output
to Appliance 7 (0-250V, 8A)
53 AUX7 input - Boiler 7 Thermostat Input
10-250 V AC/DC (Load, Pos.)
54 AUX7 input - Boiler 7 Thermostat Input
(Common, Neg.)
55, 56 AUX8 Dry Contact (Normally Open) Output
to Appliance 8 (0-250V, 8A)
57 AUX8 input - Boiler 8 Thermostat Input
10-250 V AC/DC (Load, Pos.)
58 AUX8 input - Boiler 8 Thermostat Input
(Common, Neg.)
59, 60 AUX9 Dry Contact (Normally Open) Output
to Appliance 9 (0-250V, 8A)
61 AUX9 input - Boiler 9 Thermostat input
10-250 V AC/DC (Load, Pos.)
62 AUX9 input - Boiler 9 Thermostat Input
(Common, Neg.)
63, 64 AUX1 Dry Contact (Normally Open) Output
to Appliance 10 (0-250V, 8A)
65 AUX10 input - Boiler 10 Thermostat Input
10-250 V AC/DC (Load, Pos.)
66 AUX10 input - Boiler 10 Thermostat Input
(Common, Neg.)
67 Power Supply - L1 (Phase) - 120 V AC
68 Power Supply - N (Neutral)
69 PE (Ground)
70 Fan Motor Supply - L1 (Phase)
71 Fan Motor Supply - Nreg (Neutral)
72 PE (Ground)
4.3 Triac board connections
If the optional triac board add-on is used, the control can control fans operating at 1x120 V AC.
IMPORTANT
If both exhaust and intake functions are used, the triac board defaults to intake, but the control can be programmed to
operate the triac board for the exhaust function as well.
Connect the multi plug from the add-on board to the mainboard as shown in Fig. 10.
Connect the terminals as needed. The terminal layout is shown in Fig. 12.
67 68 69 70 71 72
L1 N PE L1 N
reg
PE
SUPPLY MOTOR
Fig. 12
Fan output is regulating on the neutral side and
cannot be connected to other circuits.
10
EBC30 3002180 100315