Wiring
Before connecting or disconnecting any wires, ensure that all power supplies have been switched off and all
wires are potential-free to prevent equipment damage and avoid electrical shock.
Do not run wiring close to transformers or high frequency generating equipment. Complete and verify all
wiring connections before applying power to the controller to which the module is connected.
DO1
RE
N
HE
L
Supply
230VAC
Heat valve
Cool valve
Pump
Heat
Cool
Total for all ouputs
3A max.
T1
0
External sensor (option)
T2
Contact input (remote switch) or Temperature sensor
4-Pipe configuration
One valve
(For cool and Heat)
2-Pipe configuration
No valve – fan only
Not connected
Not connected
(or)
(or)
Y
0
High voltage wires
Low voltage wires
B
A
Communication cable 2x22AWG
Twisted, Shielded
(SFTP 120
Ω
@ 1MHz )
Modbus Protocol
RS485
Modbus Protocol
RS485
FMHC220-VFS-FC-MDB-01
Owner’s manual & Technician Settings
Tel: +972-3-9626462
Fax: +972-3-9626620
www.meitavtec.com | [email protected]
Installation of remote switch
- Connect the "T2" and the "0" terminals of the thermostats as shown in the illustration below.
- Connect the "T2" and "0" terminals of the last thermostat to the remote switch.
FMH
T2 0
FMH
T2 0
FMH
T2 0
Remote contact
Open
Close
Not in use
X
Go
G
Fan
EC Motor
~
230VAC
/ 24VAC
