WRF04 x BUS
A surface-mounted room operating unit with an integrated temperature sensor and BACnet or LON interface. Optionally with a display showing the actual room temperature. The device can be mounted directly on the wall, on a flush-mounted box or in combination with a surface-mounted frame (see accessories). Predetermined breaking points for surface-mounted installations are integrated. Possible operating elements are set point potentiometers, LEDs, buttons and rotary switches for setpoint shifting, fan level adjustment, presence detection, control of other devices and visual feedback. The connection terminal in the lower enclosure part allows pre-wiring.
| Measured values | temperature |
|---|---|
| Network technology | BACnet MS/TP, LON FT (free topology) |
| Power supply | 15..24 V = (±10%) or 24 V ~ (±10%) SELV |
| Power consumption | BACnet: typ. 0,4 W (24 V =) | 0,6 VA (24 V ~), LON: typ. 0,6 W (24 V =) | 1,7 VA (24 V ~) |
| Measuring range temp. | 0..+50 °C |
| Accuracy temperature | ±0,5 K (typ. at 21 °C) |
| Inputs | 2x entry for floating contacts |
| Setpoint (P) | potentiometer |
| Rotary switch (S) | for fan stage adjustment (max. 5 stages), 5-stages (auto,0,I,II,III), 2-stages (0,I), 3-stages (0,I,II), 4-stages (0,I,II,III), switching capacity max. 24 V =/~, 5 W |
| Button (T) | for presence detection, switching capacity max. 600 mW |
| LED (D) | for status feedback, green (standard), several LEDs possible (e.g. green, yellow, red) |
| Display | LCD 29x12 mm, monochrome, optional, for LON FT |
| Enclosure | PC, pure white |
| Protection (IP) | IP30 according to EN 60529 |
| Cable entry | breaking points top/bottom, rear entry |
| Electrical connection | terminal block, max. 1,5 mm² |
| Ambient condition | -35..+70 °C, max. 85% rH non-condensing |
| Mounting | flush-mounted on standard EU box (Ø=60 mm), or to be mounted flat onto the surface using screws, with frame for surface mounting (accessory) or directly on the wall, base part can be mounted and wired separately |
| Notes | for further variants see chapter room controller, special labelling available on request, special painting available on request, for other operating elements please request |