ELECTRICAL CONNECTIONS
22
Fig 10.
EN-2S control panel wiring diagram
Legend:
M
General ON/OFF switch
TS
Safety thermostat
TB-1
Burner thermostat-stage one
TB-2
Burner thermostat-stage two
TP
Pump thermostat
L
General function lamp
LB
Burner indication lamp
LP
Pump indication lamp
TR
Room thermostat
PE
Grounding
Unscrew the control panel back plate to have access to the connection terminals in the interior.
Connect the main electrical supply to the terminals 1, 2, 3 as indicated. The burner is
connected to the terminals 9,10,11,12. First stage command is connected to terminal 11 (F1)
and second stage command to terminal 12 (F2). Pump is connected to the terminals 4, 5, 6.
Between the terminals 7, 8 there is a jumper. If you want to connect a room thermostat,
remove the jumper and connect it to these two terminals.
Attention: The room thermostat must be a simple contact interrupter. It is not
allowed to connect a digital thermostat with an electrical signal output!