►
Post-heating 1 stage: 6 wires
Machine terminal block
Additional box terminal block
Notes
Inlet/Outlet
Xm 22 _ b-1
Xm 7 _ b-1
On/off control
24 VAC
Digital outputs
Xm 22 _ b-2
Xm 7 _ b-2
Xm 22 _ b-5
Xm 7 _ b-4
Electric heater safety thermostat return
Dry contact
Digital inputs
Xm 22 _ b-6
Xm 7 _ b-5
Xm 20 _ b-7
Xm 7 _ b-6
Intake air duct temperature sensor
NTC10k
Analogue inputs
Xm 20 _ b-8
Xm 7 _ b-7
►
Post-heating 2 stages: 8 wires
Machine terminal block
Additional box terminal block
Notes
Inlet/Outlet
Xm 22 _ b-1
Xm 7 _ b-1
On/off control stage 1
24 VAC
Digital outputs
Xm 22 _ b-2
Xm 7 _ b-2
Xm 22 _ b-3
Xm 7 _ b-3
On/off control stage 2
24 VAC
Xm 22 _ b-4
Xm 7 _ b-2
Xm 22 _ b-5
Xm 7 _ b-4
Electric heater safety thermostat return
Digital inputs
Xm 22 _ b-6
Xm 7 _ b-5
Xm 20 _ b-7
Xm 7 _ b-6
Intake air duct temperature sensor NTC10k
Analogue inputs
Xm 20 _ b-8
Xm 7 _ b-7
Hydraulic coil
►
Hydraulic 1: 5 wires
Machine terminal block
Additional box terminal block
Notes
Inlet/Outlet
Xm 20 _ b-1
Xm 7 _ b-12
0 -10V coil valve control 1
Analogue output
Xm 20 _ b-3
Xm 7 _ b-10
24-V valve supply
Xm 20 _ b-4
Xm 7 _ b-11
Xm 20 _ b-7
Xm 7 _ b-6
"Intake air duct temperature sensor NTC10k"
Analogue input
Xm 20 _ b-8
Xm 7 _ b-7
►
Hydraulic 2: 5 wires
Machine terminal block
Additional box terminal block
Notes
Inlet/Outlet
Xm 20 _ b-2
Xm 7 _ b-12
0 -10V coil valve control 2
Analogue inputs
Xm 20 _ b-3
Xm 7 _ b-10
24-V valve supply
Xm 20 _ b-4
Xm 7 _ b-11
Xm 20 _ b-7
Xm 7 _ b-6
Intake air duct temperature sensor NTC10k
Analogue output
Xm 20 _ b-8
Xm 7 _ b-7
If there are several coils in the additional box, only connect the "last" temperature sensor to the air supply.
►
Presence of changeover coil: 2 wires
Machine terminal block
Notes
Inlet/Outlet
Xm 20 _ b-5
C/O thermostat black wire
Digital inputs
Xm 20 _ b-6
C/O thermostat white wire
The changeover thermostat must be positioned on the "customer" hydraulic pipe, on the "fluid entering the coil" side (so as to be
in the insulation).
Contact open: normal operation in cooling mode
Contact closed: operation in heating mode (contact closed from 28 °C)
If the unit is equipped with an internal hydraulic coil, coil no. 2 in the additional box must be connected to the fast-on connectors
provided for this purpose. (see additional box terminal block references)
5 – INSTALLATION AND INSTALLATION CONNECTIONS
FLOWAY EN-28
