Eliwell EWPlus 974 - Connections; Ewplus 902; Ewplus 961

18
CONNECTIONS
EWPlus 902 TERMINALS
OUT1 regulator relay OUT1
N-L Power Supply (115Va or 230Va)
A TTL input
EWPlus 961 TERMINALS
Compressor relay
N-L Power Supply (115Va or 230Va)
A TTL input
EWPlus 961EWPlus 902
N
L
3 6 7 9
10
D.I.
Power Supply
4VA max
Pb1
4 5 11
(thermostat)
LOAD
OUT1
A
TTL
E
W
PLU
S
902
N
L
2 3 9
10
D.I.
Pb1
4 11
(A)
(thermostat)
A
TTL
E
W
PLU
S
961
Power Supply
4VA max