WRF04 x BUS
A surface-mounted room operating unit with integrated temperature sensor and optionally with display showing the actual value. The device can be mounted directly on the wall, on a flush-mounted box or in conjunction with a surface-mounted frame available as an accessory. Predetermined breaking points for surface-mounted installations are integrated. Possible operating elements are 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.
| Measuring 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 |
| Set point (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 | IP30 according to EN 60529 |
| Cable entry | breaking points top/bottom, rear entry |
| Connection electrical | terminal block, max. 1,5 mm² |
| Ambient condition | -35..+70 °C, max. 85% rH non-condensing |
| Mounting | surface mounted on flush-mounting 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 |