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Type WLM underfloor heating controller is suitable for connecting multiple room Room sensors and
electric actuators (thermoheads) for an underfloor or radiator based heating system.
Room sensors requiring a 230 V or 24V live & neutral must NOT be connected.
Only OJ Room sensors type WLxx that are prepared for 2 wire or wireless communication
can be used.
Description
Product Programme
Technical Data
Product Thermo
Heads
Type
Master for 8 zones
230V AC
WLM2-1BA (basic system)
Master for 8 zones with display
230V AC
WLM2-1FS (full system)
Master for 8 zones
24V
WLM2-3BA (basic system)
Master for 8 zones with display
24V
WLM2-3FS (full system)
Add-on module for 6 zones
230V AC
WLM2-1AO
Add-on module for 6 zones
24V
WLM2-3AO
TECHNICAL DATA
Power Supply ............................................................................................. 230V AC +10/-15%, 50 HZ
Max load pumps and Thermal actuators ....................................................................................... 10A
Boiler relay ........................................................................................................Volt free signal. Max 4A
Main pump (free relay) .....................................................................................Volt free signal. Max 4A
Secondary pump .............................................................................................230V AC, 50Hz Max. 4A
Thermal actuators:
WLM2-1BA
........................................................................................................................ 8 x 230V
WLM2-1FS
........................................................................................................................ 8 x 230V
Max. 2A per output. Max. 5A in total
WLM2-3BA
.......................................................................................................................... 8 x 24V
WLM2-3FS
........................................................................................................................... 8 x 24V
Max. 10VA per output. Max. 35VA in total
Optional External Switch (Timer) for night setback ......................................... Open terminals for NSB
Closed terminals for day operation
Room sensor Bus 2 wire low voltage . . . . . . . . . . . . . . . . . . . . . . . . . . bus signal from Room sensors
Additional data for WLM2-1FS & WLM2-3FS (not applicable to the basic version)
Application sensor and Limit sensor ............................... NTC type ETF-1899A for water temperature
Control signal for mixing valve actuator .................................................................................0-10V DC
Power supply for mixing valve actuator ....................................................................24V AC. Max 6VA
WLM underfloor heating contr
oller
