REMKO EFS 25-35 - Manual (Page 29)

Terminal assignment
The following tables and circuit diagrams describe
assignment of the external components (pumps,
probes) to the controller terminals of the corre-
sponding Friwa variant.
Inputs
Ter-
minal
Individual operation / cascade oper-
ation
1, ^ Inlet temperature, primary (TVL)
2, ^ ---
3, ^ ---
4, ^ Cold water temperature, secondary
(TKW)
E.1, T Hot water temperature, secondary
E.1, V Medium flow rate, secondary
Outputs
Ter-
minal
Individual opera-
tion
Cascade opera-
tion
R1, N --- Switching valve
R2, N
Return valve
(optional)
Return valve
(optional, on
master controller)
R3, N --- ---
L
const
, N
Primary pump,
secondary pump
(circulation)
Primary pump,
secondary pump
(circulation, on
master controller)
PWM
R1, ^
Primary pump Primary pump
PWM
R2, ^
Secondary pump
(circulation)
Secondary pump
(circulation, on
master controller)
Rs, Rs Alarm Alarm
E.1
E.1 1
4
R2 R1
L
const.
PWM (R)2
L
const.
PWM (R)1
Fig. 32: The active R1 valve is not displayed in the
controller display.
29